CN1071170C - Indexing mechanism - Google Patents
Indexing mechanism Download PDFInfo
- Publication number
- CN1071170C CN1071170C CN96113347A CN96113347A CN1071170C CN 1071170 C CN1071170 C CN 1071170C CN 96113347 A CN96113347 A CN 96113347A CN 96113347 A CN96113347 A CN 96113347A CN 1071170 C CN1071170 C CN 1071170C
- Authority
- CN
- China
- Prior art keywords
- grips
- ratchet
- calibration
- indexing mechanism
- dividing spindle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000007246 mechanism Effects 0.000 title claims description 32
- 239000011159 matrix material Substances 0.000 claims description 15
- 239000000725 suspension Substances 0.000 claims description 7
- 230000002146 bilateral effect Effects 0.000 claims description 6
- 239000000758 substrate Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 210000000078 claw Anatomy 0.000 abstract 3
- 230000007306 turnover Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
- B23Q15/20—Automatic control or regulation of feed movement, cutting velocity or position of tool or work before or after the tool acts upon the workpiece
- B23Q15/22—Control or regulation of position of tool or workpiece
- B23Q15/225—Control or regulation of position of tool or workpiece in feed control, i.e. approaching of tool or work in successive decreasing velocity steps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q16/00—Equipment for precise positioning of tool or work into particular locations not otherwise provided for
- B23Q16/02—Indexing equipment
- B23Q16/08—Indexing equipment having means for clamping the relatively movable parts together in the indexed position
- B23Q16/10—Rotary indexing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Machine Tool Positioning Apparatuses (AREA)
- Control Of Position Or Direction (AREA)
- Gear Transmission (AREA)
- Gears, Cams (AREA)
Abstract
To reduce the size and manufacturing cost of an indexing device. An indexing shaft 4 is fitted on a device body 1 so as to rotate, and is connected to a servo motor which can be rotated forward and backward. A ratchet wheel 8 provided with an indexing claw 13 at its outer periphery is fixed on the indexing shaft 4. The base part of a stopper pin is oscillatably- pivoted to a device body 1 at positions where its top end can be engaged and disengaged with/from the indexing claw 13 of the ratchet wheel 8, and the stopper pin is forced by a spring so that its top end may move in the moving direction. The servo motor is rotated reversely at the indexing position, and the indexing claw 13 is maintained in a abutted condition with the stopper pin.
Description
The invention relates to a kind of indexing mechanism that the rotary table calibration of lathe or similar devices is used.
This type of indexing mechanism of the prior art, for example being found in, the patent No. is among the Japan Patent of JP-B-436823 and JP-U-639846, the output of CD-ROM drive motor is rotated through dividing spindle of an accurate worm-and-wheel gear transmission, turn to desiredly thereby will be contained in workbench on the dividing spindle, turntable is locked in this by on the indexing position by the locking device of a controlling organization of forming by locking cylinder body actuator and magnetic valve by indexing position.
These indexing mechanisms of the prior art need accurate worm-and-wheel gear and indispensability has locking mechanism to seal platform on the position of calibration with locking.The indexing mechanism of this class prior art is costliness but also huge not only, also requires to have unavailable big space on little lathe.
So an object of the present invention is to provide and a kind ofly can make accurate calibration, the cheap indexing mechanism of small and exquisite simple structure.
Comprise a matrix by indexing mechanism of the present invention, supported and the dividing spindle that rotates on this matrix, with a bilateral servo motor of receiving the output shaft on this dividing spindle, fixedly be loaded on the dividing spindle, on its circumference, have a ratchet of calibration tooth by angle intervals, and be bearing in grips on this matrix so that it contacts, limits ratchet reverses with hook tooth.
This grips has a cardinal extremity and a working end, this grips is sentenced movable manner at cardinal extremity and is supported, thereby swing between the operating position that can be meshed with hook tooth this working end and this working end and the discontiguous clear position of hook tooth, and this grips is offset on this operating position.
Supported dividing spindle rotates on matrix, and a turntable or the analog in order to holding workpieces is then directly fixed or is fixed on this dividing spindle one end by a rotating shaft.The driving shaft that is contained in the bilateral servo motor on the matrix preferably is connected on the worm shaft that is meshed with a worm gear.Having the ratchet that is arranged in the calibration tooth on its excircle by angle intervals is fixed on the dividing spindle.Usually, the calibration tooth distributes with equi-angularly space.But the number of calibration tooth is selectable, and the also also nonessential equi-angularly space of pressing of calibration tooth is arranged.In order to prevent that the grips that ratchet reverses is supported on the substrate, causes it to be meshed with hook tooth.Grips can support by the pivot joint mode, thereby can swing between work and clear position.Grips also preferably is offset to the operating position.This grips can be to be supported on the matrix one in one end pivot joint mode to keep a pawl or a maintainance block that moves between operating position and clear position.Servo motor forwards dividing spindle to surpass the indexing position that requires slightly a position on normal direction, the backward rotation dividing spindle causes a calibration tooth and grips engagement again, with this dividing spindle of calibration.After dividing spindle is indexing to desired indexing position, make servo motor keep active state, so that the calibration tooth is total and grips keeps in touch.
Because this dividing spindle is to go to a position that surpasses specific indexing position by servo motor in the normality direction also to reverse with the same manner subsequently, allowing this ratchet calibration tooth enter with the grips that is used as calibration contacts, even thereby it is so inaccurate to reach the rotating actuator that dividing spindle uses in order to the rotation with the servo motor driven axle, dividing spindle also can be by precision indexing and therefore be made processing and install and can easily be finished.Because this servo motor continues to work on indexing position controlling this dividing spindle, thereby this indexing mechanism need not any locking mechanism, for example locks cylinder actuator etc. in order to locking dividing spindle mechanism on the throne.Also can lower manufacturing cost and adopt the small and exquisite structure of simplification.Be offset to the grips of operating position, its structure is small and exquisite simply also to be play a part accurately to locate the calibration tooth, causes to reach accurate calibration.
To be understood better by a detailed description of preferred embodiment of band accompanying drawing below the present invention.
Fig. 1 is the longitudinal sectional view by the indexing mechanism of preferred embodiment of the present invention;
Fig. 2 is that the side view of Fig. 1 dextrad is pressed in the local abridged of the work of Fig. 1 indexing mechanism;
Fig. 3 is for pressing the cutaway view of A-A line among Fig. 1; With
Fig. 4 is for pressing the cutaway view of the amplification of B-B line among Fig. 2.
See Fig. 1 and 3, have a matrix 2 of square casing shape by the indexing mechanism 1 in the preferred embodiment of the present invention.Matrix 2 is provided with dividing spindle 4 and is supported in the bearing 5, can be around a horizontal axis rotation.Turntable 3 is loaded on the outer end of this dividing spindle 4 in order to holding workpieces from removably.As shown in Figure 1, worm gear 7 and ratchet 8 are contained in the inner of dividing spindle 4 with abutment.Worm gear 7, ratchet 8 and dividing spindle 4 usefulness alignment pins 11 and bolt 12 are joined together.In this example, ratchet 8 has equally spaced 4 calibration teeth 13 of 90 ° on its excircle, as expressing among Fig. 2.Each tooth 13 has a warp-wise working surface 13a and a tangential pawl locating surface 13b.Recessed its effect of the 8a of being pawl locating surface 13b is added that forms on the ratchet 8, improved machining accuracy man-hour.
The bearing 16 and 17 that the rotating shaft of be positioned under the dividing spindle 4, its axial line edge doing to extend perpendicular to this dividing spindle 4 15 is supported on the matrix 2 rotates.Worm screw 18 is fixedly installed in the rotating shaft 15 and with worm gear 7 and is meshed.Bilateral servo motor 21 is additional on the matrix 2.Rotating shaft 15 1 ends are connected with shaft coupling 22 with the driving shaft 21a of servo motor 21.The driving shaft 21a of servo motor 21 can rotate in an opposite direction, promptly rotates on both forward and reverse directions.Rotating dividing spindle 4 by worm screw 18 and worm gear 7 when driving shaft 21a is just changeing is just changeing, and vice versa.
Suspension 23 is contained in the hole 2a that makes on matrix 2 upper walls, and is fixed in upper wall with bolt 24.Pivot 25 is supported on the interior protuberance 23a of suspension 23.Grips 26 can be one and keep pawl.Grips 26 is bearing on the pivot 25 with its cardinal extremity, as shown in Figure 4, causes it to move between operating position that grips 26 and calibration tooth 13 are meshed and grips 26 and clear position that calibration tooth 13 separates.By spring 27 bears against ball 28 that are contained on the suspension 23, grips 26 is biased to the operating position, i.e. clockwise direction among Fig. 2.The protuberance 26a that forms on grips 26 cardinal extremities contacts with suspension 23 with restriction grips 26 and crosses the operating position and make grips 26 be in the operating position.When grips 26 was in the operating position, the tip of grips 26 then contacted with the radially working surface 13a of calibration tooth 13 in case ratchet 8 reverses, i.e. the counter clockwise direction of Fig. 2.When dividing spindle 4 is just changeing, the excircle of ratchet 8 will be pushed into clear position in the grips outside the path of calibration tooth 13 26.In order to make the stop position of this dividing spindle 4, promptly grips 26 can be done trickle adjustment with the calibration tooth Ding Jiao position of calibration tooth 13 engagement places, puts into the pad 30 that can select thickness with removably between matrix 2 and suspension 23.
Tell about the operation of indexing mechanism 1 below.Indexing mechanism is set at original state.When do not give expression, when giving the controller 32 of this indexing mechanism 1 with the calibration signal of calibration instruction representative such as numerical control (NC) the operation of machine tool person who is machining center and so on, the driving shaft 21a of servo motor 21 turns over a specified angle of this calibration signal with rotating shaft 15 forwards.Then, dividing spindle 4 by worm screw 18 and worm gear 7 forwards turn over than 90 ° of slightly bigger angles cause this calibration tooth 13 be transferred to just over calibration tooth 13 and grips 26 engagement places by on the position of indexing position.Do thisly when just changeing when dividing spindle 4, the periphery of ratchet 8 promptly contacts with the side surface of grips 26 and path that the tip that promotes to keep pawl 26 to cause to keep pawl 26 is temporarily shifted out this calibration tooth 13 outwardly.
After dividing spindle 4 was turned over and is slightly larger than 90 °, grips 26 forced back towards the operating position because of spring 27.Then, according to a signal of controller 32, servo motor 21 counter-rotatings are with backwards rotation rotating shaft 15.Therefore, the calibration tooth 13 of ratchet 8 radially working surface 13a begins to contact with the top of grips 26, the backwards rotation of dividing spindle 4 thereby be stopped.Under this state, the top of grips 26 rests on this tangential pawl locating surface 13b of calibration tooth 13, and the result is that grips 26 is located on the high-precision operating position.Make servo motor 21 keep energising by controller 32, entered and force in driving shaft 21a along reverse direction after grips 26 contact at calibration tooth 13, be pressed against this grips 26 with maintenance calibration tooth 13, dividing spindle 4 just is maintained on the desired indexing position.
Dividing spindle 4 is by after making calibration like this, and the workpiece on the turntable 3 is processed by machining center or similar machinery.Because servo motor 21 stops dividing spindle 4 to rotate, even effect has operating force, turntable 3 still can keep static on the turntable 3.Send the instruction of next calibration after fabrication cycles is finished, dividing spindle 4 turn over again be slightly larger than 90 ° and by calibration in the next one by indexing position on.In such a way, this indexing mechanism can pass through the rotation of the driving shaft 21a of control servo motor 21, rotates dividing spindle 4 with above-mentioned pattern, sequentially with this dividing spindle 4 calibration on 4 Ding Jiao positions that separate with 90 ° of angle intervals.The rotation of driving shaft 21a by suitable control servo motor 21, dividing spindle 4 can turn over 180 ° or 270 ° in a calibration circulation.
The present invention is not limited to by the application in the preferred embodiment that specifically described at this, and can implement by various patterns.For example, indexing mechanism can be the vertical in form that dividing spindle rotates around vertical axis, the ratchet that this indexing mechanism is provided can be the ratchet not according to a plurality of calibration teeth of 90 ° of equi-angularly spaces layouts, but for example with 30 °, 45 °, 60 ° or 120 ° is at interval, so that this dividing spindle is carried out calibration by being different from a series of of 4 indexing positions by indexing position, and this calibration tooth can only be pressed equi-angularly space formation on a ratchet excircle part.
Indexing mechanism of the present invention also can be used for the calibration of any workpiece on the various lathes beyond the machining center, and is not the calibration of member that is used for the various purposes of processing purpose.
Although the present invention is presented with preferred embodiment and describes, be to be understood that; This openly is to come from illustrative purposes, can make various variations and modification in the scope of the spirit of the present invention of not leaving attached in addition claim regulation.
Claims (10)
1. indexing mechanism comprises:
A matrix (2);
Being supported on this matrix (2) goes up as a dividing spindle (4) that rotates;
A ratchet (8), its circumference are provided with a plurality of calibration teeth (13) of arranging by angle intervals, and are fixedly mounted on this dividing spindle (4) with coaxial manner; With
Be connected to the gear drive (7,15,18) on this dividing spindle (4); It is characterized by:
A grips (26) is bearing on the matrix (2), in order to move between the clear position that leaves from ratchet (8) calibration tooth (13) at grips top and the contacted operating position of ratchet (8) calibration tooth (13) and its top;
With a bilateral servo motor (21) of gear drive (7,15,18) connection, to rotate this dividing spindle (4) and ratchet (8); With
A controller (32), in order to control this this dividing spindle of (21) forward rotation (4) of this bilateral servo horse, cause a corresponding calibration tooth (13) of this ratchet (8) to be turned over the desired indexing position that described tooth (13) is meshed with the top of grips (26), this dividing spindle of backward rotation (4) then makes this calibration tooth (13) be meshed with top in order to the grips (26) of calibration.
2. according to the indexing mechanism of claim 1, it is characterized by, also comprise a spring (27) in order to this grips (26) of setovering to the operating position.
3. by the indexing mechanism of claim 1, it is characterized by, the calibration tooth (13) of each ratchet (8) has this grips (26) accurately is positioned of operating position special part locating surface (13b).
4. by the indexing mechanism of claim 3, it is characterized by, the locating surface (13b) of this grips (26) is close to the setting of each calibration tooth (13).
5. by the indexing mechanism of claim 4, it is characterized by, the locating surface (13b) of this grips (26) is along the tangential extension of this ratchet (8).
6. by the indexing mechanism of claim 3, it is characterized by, this grips (26) is to keep pawl as one that rotates between this operating position and the clear position, pivotally installs.
7. press the indexing mechanism of claim 1, it is characterized by, on this operating position, each top of described grips (26) comprises one roughly along the surface that ratchet (8) radially extends, and each described calibration tooth (13) also comprises roughly along the surface that ratchet (8) radially extends.
8. press the indexing mechanism of claim 1, it is characterized by, also comprise the worm gear (7) that is fixedly installed on this dividing spindle (4) and link with this bilateral servo motor (21) and with the worm screw (18) of worm gear (7) engagement, this worm gear and worm screw constitute described gear drive.
9. by the indexing mechanism of claim 1, it is characterized by, this controller (32) comprises that one is brought into after grips (26) top is meshed at desired calibration tooth (13), allows the device of the reverse operation of this servo motor (21) maintenance.
10. press the indexing mechanism of claim 1, it is characterized by, also comprise with adjustable perfect square formula and be installed in a suspension (23) on this substrate (2), have a replaceable pad (30) that is arranged between suspension and substrate, pad (30) supports this grips (26) and moves between operating position and clear position, therefore this grips can be adjusted to the right place by changing pad (30).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP248414/1995 | 1995-08-31 | ||
| JP248414/95 | 1995-08-31 | ||
| JP7248414A JPH0966439A (en) | 1995-08-31 | 1995-08-31 | Indexing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1157201A CN1157201A (en) | 1997-08-20 |
| CN1071170C true CN1071170C (en) | 2001-09-19 |
Family
ID=17177771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96113347A Expired - Fee Related CN1071170C (en) | 1995-08-31 | 1996-08-31 | Indexing mechanism |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPH0966439A (en) |
| KR (1) | KR100225000B1 (en) |
| CN (1) | CN1071170C (en) |
| MY (1) | MY132479A (en) |
| SG (1) | SG86985A1 (en) |
| TW (1) | TW330877B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104368830A (en) * | 2014-04-25 | 2015-02-25 | 上海真正数控机床有限公司 | Tool rest assembly |
| CN105269008B (en) * | 2015-09-14 | 2017-08-25 | 上海真正数控机床有限公司 | Cutter holder assembly |
| CN105382276B (en) * | 2015-12-24 | 2017-12-22 | 成都铁马机车车辆实业有限公司 | A kind of locomotive wheel processes locking device |
| CN106246871A (en) * | 2016-08-29 | 2016-12-21 | 安徽鸿远机电科技有限公司 | A kind of ratchet worm screw |
| CN109807660B (en) * | 2019-01-21 | 2020-03-24 | 泰安启程车轮制造有限公司 | Clamping device for positioning and processing multiple wheels |
| CN111014783B (en) * | 2019-12-27 | 2021-06-29 | 福建惠丰电机有限公司 | Positioning drilling rotating table |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88211418U (en) * | 1988-02-05 | 1988-12-28 | 徐凯 | High-efficiency rotary work-table |
| EP0450538A2 (en) * | 1990-04-02 | 1991-10-09 | Howa Machinery, Ltd. | Indexing apparatus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3757609A (en) * | 1972-01-10 | 1973-09-11 | Cyclo Index Corp | Universal index mechanism |
| CA1199050A (en) * | 1981-10-26 | 1986-01-07 | Daniel J. Pieczulewski | Rotary index table with fluid pressure preloaded bearings |
-
1995
- 1995-08-31 JP JP7248414A patent/JPH0966439A/en active Pending
-
1996
- 1996-08-20 TW TW085110139A patent/TW330877B/en active
- 1996-08-20 MY MYPI96003425A patent/MY132479A/en unknown
- 1996-08-31 SG SG9610561A patent/SG86985A1/en unknown
- 1996-08-31 CN CN96113347A patent/CN1071170C/en not_active Expired - Fee Related
- 1996-08-31 KR KR1019960037557A patent/KR100225000B1/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88211418U (en) * | 1988-02-05 | 1988-12-28 | 徐凯 | High-efficiency rotary work-table |
| EP0450538A2 (en) * | 1990-04-02 | 1991-10-09 | Howa Machinery, Ltd. | Indexing apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| MY132479A (en) | 2007-10-31 |
| CN1157201A (en) | 1997-08-20 |
| TW330877B (en) | 1998-05-01 |
| SG86985A1 (en) | 2002-03-19 |
| JPH0966439A (en) | 1997-03-11 |
| KR100225000B1 (en) | 1999-10-15 |
| KR970009976A (en) | 1997-03-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |