TWI725775B - Spindle extension device of quick change interface module - Google Patents

Abstract

A spindle extension device of quick change interface module includes a main body, a shaft, and a coupling assembly. The main body has a first and a second ends. The second end is connected with the spindle seat of the machine tool. The main body is internally provided with an axial space, with the shaft disposed therein. The shaft includes an installation portion and a connection portion. The installation portion is exposed from the first end for combining the tool seat. The coupling assembly has one end connected with the connection portion, while the other end of the coupling assembly is connected with the spindle of the machine tool. Therefore, the spindle extension device in installed on the spindle of the machine tool for increasing the travel of operation of the spindle.

Description

Spindle extension device of quick-change interface module

The invention relates to an accessory of a machining center machine, in particular to a spindle extension device of a quick-change interface module.

According to the traditional machining center machine, after leaving the factory, its spindle machining stroke is fixed and cannot be adjusted. Therefore, when the machining center machine faces deep machining operations, it is often unable to perform deep hole machining due to insufficient spindle stroke, or cannot be completed. The expected processing depth size causes the workpiece to be replaced on another processing machine with a longer spindle stroke, which causes a lot of inconvenience.

Therefore, how to increase or extend the stroke of the tool under the original machine during the deep hole processing operation of the traditional machining center machine so as to adapt to the deep hole processing is one of the problems to be solved by the present invention.

In order to solve the above-mentioned problems, the present invention discloses a spindle extension device of a quick-change interface module, which uses a coupling assembly to be installed on the spindle, thereby extending the processing stroke of the spindle, which is beneficial to deep hole processing operations.

In order to achieve the above-mentioned objective, an embodiment of the present invention provides a main unit of a quick-change interface module. The shaft extension device includes a body, a mandrel and a coupling assembly. The body has a first end and a second end. The second end is used to connect the spindle seat of the machining center. The body has an axial space; the spindle is rotatably arranged in the axial space, and the spindle has a mounting part and a In the connecting part, the first end of the mounting part is exposed for assembling the tool holder; one end of the coupling assembly is connected to the connecting part, and the other end can be connected to the main shaft of the machining center.

In another embodiment of the present invention, the coupling assembly includes a first coupling member and a second coupling member. One end of the first coupling member is sleeved on the connecting portion, and the other end has a first pressing portion, and the second The coupling has a second pressing part and an assembly hole. The second pressing part axially presses the first pressing part so that the two will not rotate relative to each other, and the assembly hole is sleeved on the main shaft.

In another embodiment of the present invention, the first pressing part is a non-circular cone hole, the inner periphery of the cone hole has a plurality of plum blossom-shaped recesses, and the second pressing part is a cone that fits into the cone hole, and the cone There are a plurality of plum blossom-shaped protrusions on the outer periphery of the rim to fit the recesses.

In another embodiment of the present invention, the spindle sleeve is provided with a bearing, the periphery of the axial space has an injection channel extending along the axial direction, the injection channel is connected to the bearing with an injection hole, and the second end is provided with a cooling The flow guide, one end of the cooling flow guide is connected to the injection channel, and the other end is connected to the cooling port of the machining center machine.

In another embodiment of the present invention, it further includes a spacer ring sleeved on the spindle, two bearings are arranged on both sides of the spacer ring, the spacer ring is provided with a channel, the channel includes an inlet and two outlets, the inlet corresponds to In the injection hole, the two outlets face the bearing.

In another embodiment of the present invention, the peripheral parallel injection flow channel of the axial space is provided with a recovery channel and a communication hole connecting the recovery channel and the axial space, and the second end is provided with a recovery hole fluidly connected to the recovery flow Tao.

In another embodiment of the present invention, both ends of the mandrel are provided with a spacer ring, and both sides of the spacer ring are provided with the bearing; the spacer ring includes an outer spacer ring and an inner spacer Ring, the inner spacer ring is sleeved on the mandrel, the outer spacer ring is sleeved on the outer edge of the inner spacer ring, and the passage, the inlet and the outlet are all arranged on the outer spacer ring.

In another embodiment of the present invention, it further includes a central spacer ring disposed between the spacer rings, and abuts against and is located between the two bearings.

In another embodiment of the present invention, the mounting portion of the spindle is provided with a threaded section and a front cover, and the threaded section is screwed with a locking member to limit the front cover.

In another embodiment of the present invention, a labyrinth ring is provided between the front cover and the locking member to sleeve the mounting portion.

Thereby, the main body of the present invention is axially connected to the main shaft of the machining center machine by using the coupling assembly. In this way, the machining stroke of the main shaft can be extended, which is beneficial for deep hole machining operations. Therefore, after the machining center leaves the factory, when facing deep hole processing, the industry can select a body of a specific size and length according to the processing requirements, and realize the processing requirements with a modular extension interface.

Furthermore, the coupling assembly has a simple structure and can be quickly positioned on the main shaft, so that the present invention has the advantages and advantages of high rigidity, high stability and high processing accuracy.

100: Spindle extension device

10: body

11: first end

12: second end

13: Axial space

14: Flange

141: Cooling hole

142: Recovery Hole

15: Injection into the runner

151: Injection hole

16: Recycling runner

161: Connecting hole

20: Mandrel

21: Installation Department

22: Connection part

23: thread section

30: Coupling assembly

31: The first coupling

311: set hole

312: The first urgent part

313: Concave

32: The second coupling

321: The second urgent part

322: Assembly hole

323: bump

40: Cooling guide

50: Bearing

51: Spacer ring

52: Channel

53: entrance

54: Exit

55: outer spacer ring

56: inner spacer ring

57: Central spacer ring

60: front cover

70: Locking parts

80: Labyrinth Ring

1: Spindle

2: Spindle seat

3: Cooling port

[Figure 1] is a schematic diagram of the appearance of the main shaft extension device of the present invention.

[Figure 2] is an exploded view of the structure of the spindle extension device of the present invention.

[Figure 3] is a schematic cross-sectional view of the spindle extension device of the present invention.

[Figure 4] is a partial enlarged schematic view of Figure 3 of the present invention.

[Fig. 5] is a schematic diagram of the main shaft of the main shaft extension device of the present invention installed on the machining center machine in the direction of the arrow.

[Fig. 6] is a schematic diagram of the main shaft of the main shaft extension device of the present invention installed on the machining center.

The exemplary embodiments of the present invention are described in detail below with reference to the drawings, and are not intended to limit the technical principles of the present invention to specific disclosed embodiments, and the scope of the present invention is only limited by the scope of the patent application, covering alternatives, modifications and Equivalent.

Please refer to Figures 1 to 6, the present invention is a quick-change interface module spindle extension device 100, which includes a body 10, a spindle 20 and a coupling assembly 30, the spindle 20 is set inside the body 10. In addition, the spindle 20 is connected to the main shaft 1 of the machining center through the coupling assembly 30, so that the main shaft 1 passes through the main shaft extension device 100 to extend the machining stroke to facilitate deep hole machining.

The main body 10 is in the shape of a hollow cylinder and has a first end 11 and a second end 12. The second end 12 is used to connect the spindle base 2 of the machining center, and the main body 10 has an axial space 13 therein. In the embodiment of the present invention, the second end 12 has a flange portion 14, the flange portion 14 has a cooling hole 141 and a recovery hole 142, wherein the cooling hole 141 is equipped with a tubular cooling guide 40. In addition, the peripheral edge of the axial space 13 has an injection channel 15 extending in the axial direction. One end of the cooling guide 40 is connected to the injection channel 15, and the other end is fluidly connected to the cooling port 3 of the machining center for guiding Lead the cooling fluid in the machining center, as shown in Figure 5. The cooling fluid can be cooling oil or a mixed fluid of oil and gas that can be used for cooling.

The mandrel 20 is rotatably arranged in the axial space 13. The mandrel 20 has a mounting portion 21 and a connecting portion 22 separately provided at two ends. The mounting portion 21 exposes the first end 11 for assembly and connection to the tool holder (Figure Not drawn in). Among them, the mandrel 20 is sleeved with a bearing 50, and the injection channel 15 is connected with the bearing 50 and is provided with an injection 入孔151。 Into the hole 151. In an embodiment of the present invention, it further includes a spacer ring 51 sleeved on the mandrel 20, and two bearings 50 are arranged on both sides of the spacer ring 51, each spacer ring 51 has a channel 52, the channel 52 It includes an inlet 53 and two outlets 54. The inlet 53 corresponds to the injection hole 151, and the two outlets 54 face the bearing 50. As a result, when the cooling guide 40 introduces the cooling fluid, the cooling fluid passes through the injection channel 15 and the injection hole 151 , And pass through the inlet 53 and outlet 54 of the spacer ring 51 to cool and lubricate the bearing 50.

In addition, in the embodiment of the present invention, the peripheral edge of the axial space 13 is parallel to the injection channel 15 with a recovery channel 16 and a communication hole 161 communicating with the recovery channel 16 and the axial space 13, and the recovery channel 16 It is fluidly connected to the recovery hole 142. When the recovery hole 142 is connected to the fluid recovery device, the excess cooling fluid can be recovered from the recovery hole 142 through the recovery channel 16.

In another embodiment of the present invention, both ends of the mandrel 20 are provided with a spacer ring 51, and the spacer ring 51 has a bearing 50 on both sides; the spacer ring 51 includes an outer spacer ring 55 and an inner spacer ring 56 , The inner spacer ring 56 is sleeved on the mandrel 20, the outer spacer ring 55 is sleeved on the outer edge of the inner spacer ring 56, and the passage 52, the inlet 53 and the outlet 54 are all provided on the outer spacer ring 55. In addition, it further includes a central spacer ring 57 disposed between the two spacer rings 51 and abuts between the two bearings 50, as shown in FIGS. 3 and 4.

One end of the coupling assembly 30 is connected to the connecting portion 22, and the other end can be connected to the main shaft 1 of the machining center. In the embodiment of the present invention, the coupling assembly 30 includes a first coupling member 31 and a second coupling member 32. The first coupling member 31 has a set of holes 311, unlike the sleeve hole 311, it has a first pressing portion 312, and the sleeve hole 311 is sleeved on the connecting portion 22 of the spindle 20. The second coupling member 32 has a second pressing portion 321 and an assembly hole 322. The second pressing portion 321 axially presses the first pressing portion 312 so that the two do not rotate relative to each other, and the assembly hole 322 is sleeved on the main shaft 1. Wherein, the first pressing portion 312 is a non-circular cone hole, and the inner periphery of the cone hole has a plurality of plum blossom-shaped recesses 313. The second pressing portion 321 is a cone that fits into the cone hole, and the outer periphery of the cone has a plurality of plum blossom-shaped protrusions 323 that fit in the concave portion 313. With this, The spindle 20 can be axially mounted on the main shaft 1 through the coupling assembly 30, and is easy to install and disassemble, with high accuracy and completely zero backlash.

Furthermore, in the embodiment of the present invention, the mounting portion 21 of the spindle 20 is provided with a threaded section 23 and a front cover 60, and the threaded section 23 is screwed with a locking member 70 to limit the front cover 60. Wherein, a labyrinth ring 80 is provided between the front cover 60 and the locking member 70 to be sleeved on the mounting part 21, through the labyrinth ring 80, external dust can be prevented from entering the inside of the main body 10.

As shown in Figures 5 and 6, when assembling, first install the second coupling member 32 on the main shaft 1, and then move and install the body 10 with the first coupling member 31 toward the main shaft 1, so that the A coupling member 31 and a second coupling member 32 are tightly connected to each other, so that the main body 10 and the spindle 20 are axially connected to the main shaft 1 of the machining center. In this way, it is mounted on the mounting portion 21 of the spindle 20. With the tool holder and the tool, the purpose of extending the machining stroke of the spindle 1 can be achieved, which is beneficial to deep hole machining operations.

Although the present invention is described in a preferred embodiment, those skilled in the art can make various changes without departing from the spirit and scope of the present invention. The above-mentioned embodiments are only used to illustrate the present invention, and are not used to limit the scope of the present invention. All modifications or changes made without violating the spirit of the present invention belong to the scope of the patent application of the present invention.

10: body

11: first end

12: second end

13: Axial space

14: Flange

141: Cooling hole

142: Recovery Hole

15: Injection into the runner

151: Injection hole

16: Recycling runner

161: Connecting hole

20: Mandrel

21: Installation Department

22: Connection part

23: thread section

30: Coupling assembly

31: The first coupling

311: set hole

312: The first urgent part

40: Cooling guide

50: Bearing

51: Spacer ring

52: Channel

55: outer spacer ring

56: inner spacer ring

57: Central spacer ring

60: front cover

70: Locking parts

80: Labyrinth Ring

Claims (9)

A spindle extension device of a quick-change interface module includes: a body having a first end and a second end, the second end is used to connect the spindle seat of a machining center, and the body has an axial Space; a spindle, which is rotatably arranged in the axial space, the spindle has a mounting portion and a connecting portion, the mounting portion exposes the first end for assembling the tool holder; and a coupling assembly, one end of which is exposed Connected to the connecting part, and the other end can be connected to the main shaft of the machining center. The coupling assembly includes a first coupling and a second coupling. One end of the first coupling is sleeved on the connecting part , The other end has a first pressing part, the second coupling member has a second pressing part and an assembly hole, the second pressing part is axially pressed against the first pressing part, so that the two will not rotate relative to each other, And the assembly hole is sleeved on the main shaft. The spindle extension device of the quick-change interface module according to claim 1, wherein the first pressing part is a non-circular cone hole, the inner periphery of the cone hole has a plurality of plum blossom-shaped recesses, and the second pressing part A cone is fitted to the cone hole, and the outer periphery of the cone has a plurality of plum blossom-shaped protrusions fitted to the recess. The spindle extension device of the quick-change interface module according to claim 1, wherein the spindle sleeve is provided with a bearing, the peripheral edge of the axial space has an injection channel extending along the axial direction, and the injection channel is opposite to the The bearing is connected with an injection hole, the second end is provided with a cooling guide piece, one end of the cooling guide piece is connected to the injection channel, and the other end is connected to the cooling port of the machining center machine. The spindle extension device of the quick-change interface module according to claim 3, further comprising a spacer ring sleeved on the spindle, the two bearings are arranged on both sides of the spacer ring, and the spacer ring is provided with a channel, The channel includes an inlet and two outlets, the inlet corresponds to the injection hole, and the two outlets face the Bearings. The spindle extension device of the quick-change interface module according to claim 4, wherein the peripheral edge of the axial space is parallel to the injection channel and is provided with a recovery channel and a communication hole connecting the recovery channel and the axial space , The second end is provided with a recovery hole fluidly connected to the recovery channel. The spindle extension device of the quick-change interface module according to claim 5, wherein the two ends of the spindle are provided with a spacer ring, and both sides of the spacer ring are provided with the bearing; the spacer The ring includes an outer spacer ring and an inner spacer ring, the inner spacer ring is sleeved on the mandrel, the outer spacer ring is sleeved on the outer edge of the inner spacer ring, the passage, the inlet, and the The outlets are all arranged in the outer spacer ring. The spindle extension device of the quick-change interface module according to claim 6, further comprising a central spacer ring arranged between the spacer rings, and abutting against and located between the two bearings. The spindle extension device of the quick-change interface module according to claim 1 or 7, wherein the mounting portion of the spindle is provided with a threaded section and a front cover, and the threaded section is screwed with a locking member to limit the The front cover. The spindle extension device of the quick-change interface module according to claim 8, wherein a labyrinth ring is provided between the front cover and the locking member to sleeve the mounting portion.

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