TWI606877B - Adjusting leak-proof system for inner and outer diameter knives and knife seats of a lathe turret - Google Patents

Description

Adjustable leakproof system for inner and outer diameter knives and tool holders for lathe turret

The invention belongs to the field of cutting tools, in particular to a tool holder for use in a turret, and a tool set arranged in the tool holder.

The turret is usually disposed on a mechanical device for mounting some of the holders, and each of the holders is detachably mounted with a cutter to perform a cutting operation on a workpiece.

During the cutting process, the workpiece returns the reaction force to the tool, and the knife seat causes the vibration phenomenon, even to the turret. After a period of time, the turret caused eccentricity, resulting in the loss of accuracy of the tool holder, so that the cutting angle of the tool is no longer accurate, and the quality of the workpiece is relatively reduced.

However, the eccentric maintenance work of the turret not only removes the turret, but also checks the eccentricity with a sophisticated instrument, and also refines the main shaft, polishes, oils, and reassembles the turret back, so it takes time and effort.

Therefore, how to obtain the same or similar eccentricity-corrected performance with a minimum cost has become an urgent problem to be solved by the present invention.

In view of this, the present invention provides an adjustment and leakage prevention system suitable for a lathe, the main purpose of which is to adopt an adjusted structure to help the tool holder to quickly obtain the adjustment performance in the turret, and to avoid the trouble of removing and reassembling the turret. The quick-release configuration facilitates the installation of the tool.

Due to the above object, the invention relates to an adjustment leakage prevention system for a lathe, comprising: a turret, an inner diameter knife seat and an outer diameter knife seat. Wherein, the turret is configured on a lathe and can Rotating, having at least one platform, the platform having at least one water outlet.

The inner diameter knife seat comprises: a set of fastening screws, each fastening screw is fastened to the platform through a fastening screw hole formed in the inner diameter knife seat, the diameter or length of the fastening screw hole is larger than the fastening The diameter of the screw; a cutter set hole formed in the inner diameter knife seat, the wall of the inner diameter cutter seat surrounding the cutter group hole is cut by a slit, so that the slit communicates with the cutter group hole, and the inner hole The cutter seat is partitioned into a base portion and a clamp arm; a set of clamping screws, each of which clamps through a countersunk hole and a slit formed in the clamp arm, and is locked into the base portion to reduce the cutter assembly hole a water channel, which is disposed at the base, and the two ends of the water channel respectively lead to the cutter group hole and a water inlet formed on the bottom surface of the inner diameter knife seat, and the water inlet and the water outlet are fixed when the inner diameter knife seat is fixed to the platform The hole is connected; a water stop pad is placed in the water tank, the water stop pad surrounds the water passage and the water outlet hole; and a set of X-axis and Y-axis adjustment screws, each of which is locked in the X-axis adjustment screw The X-axis adjustment hole of the inner diameter seat is opposite to the turret, and each Y-axis adjustment screw is locked into one. The inner diameter of the tool holder and the Y-axis adjustment hole leading to the fastening screw hole, which is opposite to the fastening screw, the X-axis and Y-axis adjustment screws move the inner diameter seat relative to the platform, and adjust the inner diameter of the knife seat in the turret Orientation.

The outer diameter knife seat comprises: a set of fastening screws, each fastening screw passes through a fastening screw hole formed in the outer diameter knife seat and is locked on the platform, the diameter or length of the fastening screw hole is larger than the fastening a diameter of the screw; a base portion having a turning portion; the clamping portion comprising: a cushion body fastened to the wall surrounding the turning portion of the turning tool, the cushion body having a screw hole; a screw, It is locked into the screw hole and can be displaced relative to the pad body; a water channel, which is disposed at the base, and the two ends of the water channel respectively lead to a water inlet formed on the bottom surface of the outer diameter knife seat and a cutter water inlet hole formed on the wall of the base surrounding the tool inserting area, and the outer diameter knife seat is fixed on the outer diameter The platform is connected to the water outlet hole; a water stop pad is placed in the water tank, the water stop pad surrounds the water passage and the water outlet hole; a set of X-axis and Y-axis adjustment screws, each X-axis The adjusting screw is locked into an X-axis adjusting hole formed in the outer diameter seat to abut against the turret, and each Y-axis adjusting screw is locked into a Y-axis adjusting hole formed in the outer diameter seat and leading to the fastening screw hole. The X-axis and Y-axis adjustment screws move the outer diameter seat relative to the platform to adjust the orientation of the outer diameter seat in the turret.

In this way, the adjustment leakproof system of the present invention is suitable for assembling the inner diameter knife seat or the outer diameter knife seat of the turret of the lathe, which not only can quickly adjust the orientation of the tool holder, but also facilitates quick removal and assembly of the tool.

The above-mentioned objects, structures and features of the present invention will be described in detail with reference to the preferred embodiments of the present invention. .

10‧‧‧Inner knives

11‧‧‧Tool set hole

12‧‧‧ base

13‧‧‧ watercourse

14‧‧‧ OD knives

15‧‧‧ bottom

16‧‧‧ clip arm

17‧‧‧Slide rails

18‧‧‧ slit

19‧‧‧ into the sink

20‧‧‧Knife sleeve locking hole

21‧‧‧X-axis adjustment screw

22‧‧‧X-axis adjustment hole

23‧‧‧ fastening screws

24‧‧‧ fastening screw holes

25‧‧‧Y-axis adjustment screw

26‧‧‧Y-axis adjustment hole

27‧‧‧Clamping screws

28‧‧‧Clamping screw counterbore

29‧‧‧ spacing

30‧‧‧Knife Tower

31, 33, 35‧‧‧ arrows

32‧‧‧ platform

34‧‧‧Fixed holes

36‧‧‧Water outlet

38‧‧‧Knife sleeve locking screw

40‧‧‧Tool set

41‧‧‧blade

42‧‧‧Inner diameter turning tool

43‧‧‧ claw block

44‧‧‧Cutter

45‧‧‧ center column

46‧‧‧ cutter head

47‧‧‧ positioning slot

48‧‧‧ OD turning tool

49‧‧‧O ring ditch

50‧‧‧Flexible water knife cover

51‧‧‧Cutter bar tightening hole

52‧‧‧Into the hole

53‧‧‧Tool bar locking screw

54‧‧‧ gap

55‧‧‧ embossing

56‧‧‧ into the sink

58‧‧‧ water inlet

60‧‧‧ sprinkler

61‧‧‧ end face

62‧‧‧Tool inlet hole

64‧‧‧ screws

66‧‧‧ cushion body

68‧‧‧ screw holes

70‧‧‧stop screw

71‧‧‧Stop screw holes

72‧‧‧Multi-fork slot

74‧‧‧ flow path

76‧‧‧O-ring

78‧‧‧Tools into the water hole

79‧‧‧Tooling area

80‧‧‧Clamping group

Figure 1 is a perspective view of the inner diameter seat of the present invention.

Figure 2 is a plan view of the inner diameter seat.

Figure 3 is a perspective view of another angle of the inner diameter seat.

Figure 4 is a left side view of the inner diameter seat.

Figure 5 is an exploded view of the inner diameter seat, turret and tool set.

Figure 6 is a combination view of the inner diameter knife holder disposed on the turret.

Figure 7 is a partial cross-sectional view showing the combination of the inner diameter seat and the turret.

Figure 8 is an operation diagram of adjusting the inner diameter of the knife holder in the turret.

Figure 9 is a perspective view of another angle of the elastic water jacket.

Figure 10 is a perspective view of the first embodiment of the outer diameter seat.

Figure 11 is a perspective view of a second embodiment of the outer diameter seat.

Figure 12 is a combination view of the inner and outer diameter seats mounted on the turret.

Figure 13 is a combination view of the combined outer diameter turning tool.

Figure 14 is an exploded view of the combined outer diameter turning tool.

Figure 15 is a cross-sectional view of the combined outer diameter turning tool.

Referring to Figure 5, a preferred embodiment of an adjustment leak proof system for a lathe is illustrated in which a turret 30 is rotatably disposed on a lathe (not shown). In the figure, the turret 30 has more than one platform 32. Each platform 32 has a plurality of fixing holes 34 and a pair of water outlet holes 36. The water outlet holes 36 communicate with an inner diameter tool holder 10 fastened to the platform 32. The guiding fluid is caused to radiate heat through a cutter set 40 mounted to the inner diameter seat 10.

The cutter set 40 has an inner diameter cutter 42 that is detachably disposed in an elastic water outlet pocket 50. The elastic water outlet knife sleeve 50 is mounted on the inner diameter knife holder 10 to detachably support the inner diameter cutter 42 to perform a cutting operation of a structure such as a hole, a hole or a groove for a workpiece (not shown).

In Fig. 12, outer diameter seats 14 of two different configurations are respectively disposed on respective platforms 32 of the turret 30. Each outer diameter seat 14 is detachably mounted with an outer diameter turning tool 48, and the outer diameter turning tool 48 performs an outer contour cutting operation on the workpiece (not shown).

Next, the inner diameter seat 10 will be described in detail in conjunction with the first to eighth figures. A cutter group hole 11 is formed in an intermediate portion of the inner diameter knife holder 10, and a slit 18 cuts the inner diameter knife holder 10 around the wall of the cutter group hole 11 to form an inner diameter knife holder 10 having a substantially C-shaped structure. . A base portion 12 and a clamp arm 16 are on both sides of the cutter assembly hole 11, and the base portion 12 moves relative to the clamp arm 16 in the slit 18 to limit the cutter set. The volume of the hole 11 is gradually reduced.

The inner diameter knife holder 10 further has a water channel 13, a set of knife sleeve locking holes 20, two sets of fastening screw holes 24, a set of clamping screw counterbore holes 28 and an adjusting structure. Wherein, the water channel 13 is a criss-crossing pipeline disposed at the base portion 12, and has a plurality of nozzles respectively leading to the cutter group hole 11 and the second sinking base portion 12 into the water tank 19, and each water inlet tank 19 is at the inner diameter knife seat. The bottom surface 15 of 10.

When the inner diameter tool holder 10 is fixed to the platform 32 of the turret 30, the water inlets 19 are opposed to the corresponding water outlet holes 36, allowing some tools such as water, coolant, etc., to flow into the inner diameter tool holder 10 along the water channel 13. The hole 11 creates a heat dissipation effect on the elastic water outlet pocket 50 (or even the entire cutter group 40).

Of course, the leakproof structure of this embodiment is indispensable. The leakage preventing structure is a water stop pad 73 which can be placed in the corresponding water inlet 19 of the inner diameter knife holder 10. The water stop pad 73 is constrained by the inner diameter of the knife seat 10 enclosing the wall of the water inlet 19, surrounding the periphery of the water passage 13 where the nozzle communicates with the water outlet hole 36. Under the squeezing of the inner diameter seat 10 and the platform 32, the water stop pad 73 neither hinders fluid from entering the water passage 13 and prevents leakage.

The clamping screw counterbore 28 extends through the clamp arm 16 and extends directly to the base 12 to communicate with the slot 18. A set of clamping screws 27 are respectively passed through the clamping screw countersunk holes 28 for locking into the base 12, and the associated clamping arms 16 are close to the base 12 and the slits 18 are reduced, so that the elastic water outlet sleeve 50 is even inside the entire cutter set 40. The cutter holder 10 is clamped.

The sleeve locking hole 20 is directly connected to the cutter group hole 11 through the joint of the base 12 and the clamp arm 16. One of the set of knife sleeve locking screws 38 is locked into the corresponding knife sleeve locking hole 20, and the elastic water outlet knife sleeve 50 is pressed into the portion of the tool grouping hole 11 to assist the inner diameter knife seat 10 to clamp the elastic water outlet knife sleeve. 50, in turn, prevents the cutter set 40 from rotating relative to the inner diameter seat 10.

These fastening screw holes 24 pass through the base portion 12 and the clamp arm 16 on both sides of the cutter assembly hole 11 to allow one of the set of fastening screws 23 to pass through the fastening screw hole 24 and lock into the fixing hole 34, so that the inner diameter knife seat 10 is fixed to the platform 32 of the turret 30.

The adjustment structure includes two sets of X-axis adjustment screws 21, two sets of X-axis adjustment holes 22, two sets of Y-axis adjustment screws 25, and two sets of Y-axis adjustment holes 26. The X-axis adjusting holes 22 are inserted through the sliding rails 17 protruding from the bottom surface 15 of the base portion 12, and each set of X-axis adjusting screws 21 is locked into the X-axis adjusting holes 22 of the sliding rails 17. Each of the Y-axis screw locking holes 26 penetrates the inner diameter base 10 (or the base portion 12) and communicates with the fastening screw holes 24, and each set of the Y-axis adjustment screws 25 is locked into the Y-axis adjustment hole 26.

When the blade holder 10 is adjusted, the fastening screw 23 is first loosened to release the fastening state of the inner diameter blade holder 10. Since the diameter or length of the fastening screw hole 24 is larger than the diameter of the fastening screw 23, the Y-axis adjustment screw 25 abuts against the fastening screw 23, and the inner diameter knife holder 10 is displaced in the direction of the arrow 33 in Fig. 8. Alternatively, the yoke 30 is held by the X-axis adjusting screw 21 through the distance 29 between the second rail 17 and the turret 30, and the inner-diameter holder 10 is moved in the direction of the arrow 31 in the second figure. Alternatively, the X and Y two-axis adjusting screws 21, 25 are used to adjust the inner diameter of the holder 10 in the direction of the arrow 35 in Fig. 8. After the adjustment is completed, the fastening screw 23 is locked, so that the inner diameter seat 10 can be kept at a new angle in the turret 30.

In the fifth and ninth drawings, the inner diameter turning tool 42 has a shank 44, and the shank 44 is fixed to a cutting head 46, and the cutting head 46 is provided with a blade portion 41. The center of the elastic water outlet sleeve 50 extends through a hole 52 in the longitudinal direction, and a gap 54 is formed in the wall of the elastic water outlet sleeve 50 around the insertion hole 52, so that the elastic water outlet sleeve 50 has a C-shaped structure. When the elastic water outlet sleeve 50 is placed in the cutter assembly hole 11 of the inner diameter knife seat 10, the clamp arm 16 cooperates with the base portion 12 to press the elastic water outlet knife sleeve 50, and relatively reduces the movable space of the gap 54 to assist the elastic water outlet knife sleeve 50. The shank 44 of the inner diameter turning tool 42 is clamped.

The two sets of arbor tightening holes 51 pass through the wall of the elastic water outlet sleeve 50 directly to the insertion hole 52, allowing a set of arbor locking screws 53 to be locked into the corresponding arbor pressing holes 51, and the arbor 44 is deepened into the elastic water lance The portion of the sleeve 50 creates a tightening action that secures the knife bar 44 in the flexible water outlet pocket 50.

The elastic water outlet sleeve 50 is externally formed with a water inlet 56, and the water inlet 56 and the gap 54 are on both sides of the insertion hole 52. A water inlet hole 58 is formed in the radial direction of the elastic water outlet sleeve 50 at the bottom surface of the water inlet 56, and the insertion hole 52 is communicated with the outside through the water inlet hole 58. In addition, the elastic water outlet knife 50 An outer rim 55 is provided to facilitate the take-up of the elastic water jacket 50 and smoothly enter and exit the cutter assembly hole 11 of the inner cutter holder 10.

When the elastic water outlet knife sleeve 50 is fixed to the inner diameter knife holder 10, the water inlet 56 of the inner diameter turning tool 42 covers the open end of the water channel 13 to the cutter assembly hole 11, so that the water inlet hole 58 and the water inlet hole 19 ( Please refer to Figure 3). Thus, the fluid enters the insertion hole 52 of the elastic water outlet cover 50 and generates heat conduction with the cutter bar 44 to dissipate the heat generated by the inner diameter turning tool 42 during cutting to obtain a cooling effect.

As shown in Figures 10 and 12, the specific structure of one of the two outer diameter seats 14 is substantially the same as that of the inner diameter holder. The difference is that, firstly, there is no clamping arm, only the base 12 is retained, and the top surface of the base 12 is flat.

Secondly, there is no hole in the tool set, and there is naturally no need to clamp the screw and the countersunk head of the clamping screw. However, the outer diameter seat 14 has a more tool placement area 79 which is a square groove that is recessed into the side of the base 12 to assemble a clamping group 80.

The clamping set 80 includes a screw 64 and a pad body 66. The screw 64 is locked into a screw hole 68 formed in the pad body 66 to be displaced relative to the pad body 66. The pad body 66 is fastened to the outer diameter tool holder. 14 is disposed around the wall of the turning tool insertion area 79, and the outer diameter turning tool 48 is assembled in the turning inserting area 79 of the outer diameter seat 14 in the radial direction of the turret 30.

Third, the outer diameter seat 14 also has two nozzles 60 disposed on the top surface of the base 12 to communicate with the water channel 13 to guide the fluid to the outer diameter cutter 48.

Fourth, the outer diameter knife holder 14 has a cutter water inlet hole 62 formed in the wall surface of the base portion 12 surrounding the turning tool insertion area 79, which connects the water passage 13 and the cutter water inlet hole 78 (see Figure 3), the fluid can be directed to the outer diameter turning tool 48.

11 and 12 are the configuration of the remaining outer diameter seat 14, substantially the same as the outer diameter seat of Fig. 10, with the difference that, first, the setting region 79 is immersed in the top surface of the base 12, and its intersection Wrong to the length direction of the slide rail 17.

Next, the clamping group 80 is increased from one to two with respect to the number of the screws 64, and is locked on the same side of the pad body 66. The clamping outer diameter turning tool 48 is assembled to the outer diameter tool holder according to the axial direction of the turret 30. The turning tool of 14 is placed in the area 79.

Third, the showerheads 60 are disposed on the side of the base 12 and are also capable of directing fluid flow to the outer diameter turning tool 48 of the turning inserting zone 79.

In Figures 13 to 15, the outer diameter turning tool 48 is different from the inner diameter turning tool, and the difference between the two is that, firstly, there is no elastic water outlet knife sleeve, and the outer diameter turning tool 48 can be used alone.

Second, the outer diameter turning tool 48 is of a combined structure. In other words, the shank 44 is separate from the shank 46 and used in combination.

In the present embodiment, the shank 44 has two end faces 61, and a plurality of yokes 72 are formed in one of the two end faces 61. In the center of the plurality of yokes 72, there is a flow path 74 that is trapped inside the shank 44, and the flow path 74 is connected. A screw hole 71 and a cutter inlet hole 78 allow a stop screw 70 to lock into the stop screw hole 71. The multi-fork 72 is tri-folded, and the stop screw hole 71 and the tool inlet hole 78 are on different sides of the arbor 44. In some embodiments, the multi-fork 72 can be two or four forked.

Next, the cutter head 46 has a blade portion 41 and a center post 45. The center post 45 is hollow, and a different positioning groove 47 is formed on the outer end of the center post 45 from the blade end 41 at a different end of the cutter head 46. The cutter head 46 also has a plurality of claw blocks 43 that conform to the shape of the multi-fork groove 72 and are raised around the center post 45.

When the center post 45 is inserted into the flow path 74, the claw blocks 43 are unevenly fitted with the plurality of fork grooves 72 to prevent the cutter bar 44 and the cutter head 46 from rotating relative to each other. The stop screw 70 penetrates the positioning groove 47 to cause a positioning action on the center post 45. The cutter water inlet hole 78 communicates with the cutter water inlet hole 62 of the outer diameter knife holder 14 (see FIGS. 10 and 11 for details), and the fluid flows through the inside of the outer diameter cutter 48 to the blade portion 41. The O-ring 76 is sleeved on the O-ring groove 49 formed in the center post 45. When the center post 45 is inserted into the flow path 74, the O-ring 76 has a leak-stopping effect.

10‧‧‧Inner knives

11‧‧‧Tool set hole

12‧‧‧ base

13‧‧‧ watercourse

15‧‧‧ bottom

16‧‧‧ clip arm

17‧‧‧Slide rails

18‧‧‧ slit

20‧‧‧Knife sleeve locking hole

21‧‧‧X-axis adjustment screw

22‧‧‧X-axis adjustment hole

23‧‧‧ fastening screws

24‧‧‧ fastening screw holes

25‧‧‧Y-axis adjustment screw

26‧‧‧Y-axis adjustment hole

27‧‧‧Clamping screws

28‧‧‧Clamping screw counterbore

30‧‧‧Knife Tower

32‧‧‧ platform

34‧‧‧Fixed holes

36‧‧‧Water outlet

40‧‧‧Tool set

41‧‧‧blade

42‧‧‧Inner diameter turning tool

44‧‧‧Cutter

46‧‧‧ cutter head

50‧‧‧Flexible water knife cover

51‧‧‧Cutter bar tightening hole

52‧‧‧Into the hole

53‧‧‧Tool bar locking screw

54‧‧‧ gap

55‧‧‧ embossing

Claims (6)

An adjustment leakproof system for a lathe, comprising: a turret (30) configured to be rotatable on a lathe, the turret (30) having at least one platform (32), the platform (32) having at least one effluent a hole (36); an inner diameter seat (10) comprising: a set of fastening screws (23), each fastening screw (23) passing through a fastening screw hole formed in the inner diameter seat (10) ( 24) and locked to the platform (32), the diameter or length of the fastening screw hole (24) is larger than the diameter of the fastening screw (23); a cutter group hole (11) formed on the inner diameter seat (10), the wall of the inner diameter seat (10) surrounding the cutter group hole (11) is cut by a slit (18), so that the slit (18) communicates with the cutter group hole (11), The inner diameter knife seat (10) is partitioned into a base portion (12) and a clamp arm (16); a set of clamping screws (27), each clamping screw (27) is passed through a clamping formed on the clamping arm (16) a screw counterbore (28) and a slit (18) that lock into the base (12) to reduce the volume of the tool set hole (11); a water channel (13) disposed at the base (12), the water channel (13) The two ends respectively lead to the cutter set hole (11) and a water inlet (19) formed on the bottom surface (15) of the inner diameter seat (10), in the inner diameter seat (10) When fixed to the platform (32), the water inlet tank (19) communicates with the water outlet hole (36); a water stop pad (73) is placed in the water inlet tank (19), and the water stop pad (73) surrounds a channel around the water passage (13) and the water outlet hole (36); a set of X-axis and Y-axis adjustment screws (21, 25), each X-axis adjustment screw (21) locked into an inner diameter knife seat (10) The X-axis adjustment hole (22) is opposite to the turret (30), and each Y-axis adjustment screw (25) is locked into a hole formed in the inner diameter seat (10) and leading to the fastening screw The Y-axis adjustment hole (26) of the hole (24) is abutted against the fastening screw (23), and the X-axis and Y-axis adjustment screws (21, 25) move the inner diameter seat (10) relative to the platform (32) Adjusting the orientation of the inner diameter knife seat (10) in the turret (30); wherein the X-axis adjustment holes (22) extend through the sliding rails (17) protruding from the bottom surface (15) of the inner diameter knife seat (10), There is a distance (29) between each rail (17) and the turret (30). An adjustment leakproof system for a lathe according to claim 1 of the patent application, further comprising a cutter set (40) comprising: an inner diameter turning tool (42) having a cutter bar (44), the cutter bar ( 44) a cutter head (46), a blade portion (41) fixed to the cutter head (46); an elastic water outlet knife sleeve (50) comprising: a insertion hole (52) and a gap (54), The insertion hole (52) penetrates the center of the elastic water outlet sleeve (50) along the length direction, and the gap (54) cuts the elastic water outlet sleeve (50) around the wall of the insertion hole (52) and the insertion hole (52). The same, the elastic water outlet knife sleeve (50) is a C-shaped structure body; a set of knife rod locking screws (53), each knife rod locking screw (53) is locked into a flexible water outlet knife sleeve (50) And a shank pressing hole (51) leading to the insertion hole (52) for pressing the shank (44) deep into the elastic water outlet sleeve (50); a water inlet (56) and a water inlet hole (58), the water inlet tank (56) is formed on the outer surface of the elastic water outlet sleeve (50) and the gap (54) is on both sides of the insertion hole (52), and the water inlet hole (58) is along the elastic water outlet knife sleeve (50) The radial direction is formed between the bottom of the inlet sink (56) and the insertion hole (52); when the elastic water outlet sleeve (50) is placed into the inner diameter holder (10) The hole (11) is assembled, and the clamping arm (16) is pressed against the base (12) to press the elastic water outlet sleeve (50), and the gap (54) is reduced to assist the elastic water outlet sleeve (50) to clamp the cutter rod (44). ); the sink (56) It is connected to the water channel (13) of the cutter group hole (11), so that the fluid flows through the water inlet hole (58) to the cutter bar (44) to have heat conduction. An adjustment leakproof system for a lathe according to claim 2, wherein the elastic water outlet cover (50) has an embossing (55). An adjustment leakproof system for a lathe, comprising: a turret (30) configured to be rotatable on a lathe, the turret (30) having at least one platform (32), the platform (32) having at least one effluent a hole (36); an outer diameter seat (14) comprising: a set of fastening screws (23), each fastening screw (23) passing through a fastening screw hole formed in the outer diameter seat (14) ( 24) and locked to the platform (32), the diameter or length of the fastening screw hole (24) is larger than the diameter of the fastening screw (23); a base portion (12) having a turning portion (79) A clamping set (80) comprising: a pad body (66) fastened to the base (12) surrounding the wall of the turning tool insertion area (79), the pad body (66) having a screw hole (68) a screw (64) that is locked into the screw hole (68) to be displaced relative to the pad body (66); a water channel (13) disposed at the base portion (12), the water channel (13) leading to a second end a water inlet groove (19) formed on a bottom surface (15) of the outer diameter knife seat (14) and a cutter water inlet hole (62) formed in a wall portion of the base portion (12) surrounding the turning tool insertion portion (79), at the outer diameter knife seat (14) When fixed to the platform (32), the water inlet tank (19) communicates with the water outlet hole (36); a water stop pad (73) is placed into the water tank (19), The water stop pad (73) surrounds the periphery of the water passage (13) and the water outlet hole (36); a set of X-axis and Y-axis adjustment screws (21, 25), and each X-axis adjustment screw (21) is locked into one. The X-axis adjustment hole (22) of the outer diameter seat (14) is opposite to the turret (30), and each Y-axis adjustment screw (25) is locked into a shank (14) and is tightly connected. Solid screw The Y-axis adjustment hole (26) of the hole (24), which is abutted against the fastening screw (23), and the X-axis and Y-axis adjustment screws (21, 25) move the outer diameter seat (14) relative to the platform (32) Adjusting the orientation of the outer diameter knife seat (14) in the turret (30); wherein the X-axis adjustment holes (22) extend through the sliding rails (17) protruding from the bottom surface (15) of the outer diameter knife seat (14), There is a distance (29) between each rail (17) and the turret (30). An adjustment leakproof system for a lathe according to claim 4, further comprising an outer diameter turning tool (48) having a cutter bar (44), the cutter bar (44) having a cutter head (46) and A cutter is inserted into the water hole (78), and a blade portion (41) is fixed to the cutter head (46); when the cutter bar (44) enters the turning tool insertion region (79), the clamp group (80) limits the outer diameter cutter (48) assembled on the outer diameter seat (14), the tool inlet (62) is connected to the water channel (12) and the tool inlet hole (78) to direct fluid flow to the outer diameter tool (48). An adjustment leakproof system for a lathe according to claim 5, wherein the outer diameter seat (48) further has a spray head (60) disposed at the base (12), the spray head (60) connecting the water passage ( 13) and direct the fluid to the outer diameter turning tool (48).