CN111014745A - Differential four-claw centering mechanism - Google Patents
Differential four-claw centering mechanism Download PDFInfo
- Publication number
- CN111014745A CN111014745A CN201911356991.6A CN201911356991A CN111014745A CN 111014745 A CN111014745 A CN 111014745A CN 201911356991 A CN201911356991 A CN 201911356991A CN 111014745 A CN111014745 A CN 111014745A
- Authority
- CN
- China
- Prior art keywords
- hole
- base body
- block
- differential
- centering mechanism
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/24—Chucks characterised by features relating primarily to remote control of the gripping means
- B23B31/30—Chucks characterised by features relating primarily to remote control of the gripping means using fluid-pressure means in the chuck
Abstract
The invention discloses a differential four-claw centering mechanism which comprises a base body, a retainer connecting rod, an inner barrel, an outer barrel, a gourd pin, a conducting block A, a conducting block B, a rotating shaft, a sliding block, a claw A and a claw B, wherein a mounting hole is formed in the bottom in the base body, four sliding grooves which are evenly distributed in equal parts are formed in the end part of the base body, and the inner barrel and the outer barrel are assembled in the mounting hole of the base body through the retainer connecting rod matched with the gourd pin; the two transmission blocks A and the two transmission blocks B are symmetrically installed and fixed in four sliding grooves of the base body through rotating shafts, spherical surfaces at two ends of the transmission blocks A are installed in a tangent mode with an inner hole of the inner cylinder and a fine groove of the sliding block, and the clamping jaw A is connected with the sliding block through key and screw positioning; the spherical surfaces of two ends of the transmission block B are installed with the inner hole of the outer barrel and the fine groove of the sliding block in a cutting mode, and the clamping jaw B is positioned through a key and a screw and connected with the sliding block. The differential four-claw centering mechanism has the advantages of wide application, simple operation, simple structure, good reliability and the like.
Description
Technical Field
The invention relates to the field of machining, in particular to a differential four-claw centering mechanism.
Background
The field of machining in China is developing at a high speed, and products are continuously updated; the trial production of new products can not be separated from the fixture. The machine tool clamp is used for fixing a machined workpiece. The process of centering, positioning and clamping the workpiece is often used in the first procedure of process programming, and the processing of the procedure directly affects the quality of subsequent processing. However, more and more parts are now being clamped in a multi-jaw centering simultaneous manner in a first process step. Although this method can realize the centering of the workpiece and the clamping of the workpiece, since the centering references in two directions of many workpieces are not necessarily coincident with the geometric center of the workpiece, two power sources are often needed when the two directions are centered. This may not be appropriate under some conditions where space is small or the number of power sources is insufficient. Therefore, a differential four-claw centering mechanism with multiple purposes, easy operation and high reliability is urgently needed to solve the problem which always puzzles the technical personnel in the field in the prior art.
Disclosure of Invention
The invention aims to provide a differential four-claw centering mechanism which has the advantages of wide application, simplicity in operation, simple structure, good reliability and the like. Meanwhile, the clamping jaws in two directions can be positioned and clamped simultaneously, the positioning and clamping in two directions in an asynchronous mode can be realized, and the difference among the workpieces is self-adaptive.
In order to realize the purpose, the invention adopts the following technical scheme:
the utility model provides a differential four paws centering mechanism which characterized in that: the inner cylinder and the outer cylinder are matched with the gourd pin through the holder connecting rod and assembled in the mounting hole of the base body, the outer wall of the outer cylinder is attached to the mounting hole, the outer wall of the holder connecting rod is attached to the inner wall of the outer cylinder, the outer wall of the inner cylinder is attached to the inner wall of the holder connecting rod, the inner cylinder and the outer cylinder are provided with corresponding through holes, the gourd pin penetrates through the through holes, and spherical surfaces at two ends of the gourd pin are respectively attached to the inner wall of the mounting hole of the base body and a central shaft;
the two transmission blocks A and the two transmission blocks B are symmetrically installed and fixed in four sliding grooves of the base body through rotating shafts, spherical surfaces at two ends of the transmission blocks A are installed in a tangent mode with an inner hole of the inner cylinder and a fine groove of the sliding block, and the clamping jaw A is connected with the sliding block through key and screw positioning; the spherical surfaces of two ends of the transmission block B are installed with an inner hole of the outer barrel and a fine groove of the sliding block in a cutting way, and the clamping jaw B is positioned by a key and a screw and connected with the sliding block;
the upper end of the inner cylinder is symmetrically provided with two mounting holes which are mutually concentric, the spherical surface at one end of the transmission block A is attached to the mounting hole on the inner cylinder, the middle of the transmission block A is provided with a fine hole, the rotating shaft penetrates through the fine hole of the transmission block A and is fixedly mounted in the fine hole in the base body sliding chute, the fine hole in the base body sliding chute is a blind hole, and the opening of the fine hole in the base body sliding chute is provided with internal threads for mounting a jackscrew to prevent the rotating shaft from falling off;
the urceolus upper end symmetry is equipped with two mounting holes and is concentric each other, and the sphere of conduction block B one end is laminated with the mounting hole on the urceolus, is equipped with the finish hole in the middle of the conduction block B, the finish hole fixed mounting that the pivot passed conduction block B is in the finish hole in the base member spout, the finish hole in the base member spout is the blind hole, the opening part in the finish hole in the base member spout is equipped with the internal thread for the installation jackscrew prevents that the pivot from deviating from.
Further preferably, the gourd pin is a part formed by spherical surfaces at two ends and a ball ring in the middle, the spherical surfaces at the two ends can be tangent to the through holes of the inner cylinder and the outer cylinder, and the spherical surface of the ball ring in the middle is tangent to the through hole of the retainer connecting rod.
Further preferably, the transmission block a rotates around the rotation shaft while being restricted by the slide groove of the base body.
Further preferably, the transmission block B rotates around the rotation shaft while being restricted by the slide groove of the base body.
Further preferably, the jaw A and the sliding block are positioned through a key slot and fastened through a screw, and the jaw A can realize the adjustment of the opening size and the centered position of the jaw A by replacing different eccentric keys.
Further preferably, the jaw B and the sliding block are positioned by a key slot and fastened by a screw, and the jaw B can realize the adjustment of the opening size and the centered position of the jaw B by replacing different eccentric keys.
Further preferably, a through hole is formed in the middle of the retainer connecting rod and used for being connected with a power source.
The invention has the beneficial effects that:
the differential four-claw centering mechanism has the following motion modes: the retainer connecting rod is connected with a power source, when the clamping jaws in one direction firstly contact with a workpiece and complete the positioning of the center of the workpiece in one direction, the inner (outer) cylinder stops acting, at the moment, the retainer connecting rod continues to move, the gourd pin begins to deflect, the outer (inner) cylinder is driven to continue to move until another group of the clamping jaws complete the positioning of the center of the workpiece in the other direction. Therefore, the clamping jaws in two directions can be positioned and clamped simultaneously, the positioning and clamping in two directions in an asynchronous mode can be realized, and the difference among the workpieces is self-adaptive.
The jack catch not only can realize deviating from the center of mechanism and open the location and press from both sides tight work piece, also can realize simultaneously through changing the jack catch pattern, thereby the centering motion is fixed a position tightly the work piece to the heart.
When the differential four-claw centering mechanism is used, the differential four-claw centering mechanism can be directly arranged on a tool fixture, when the differential four-claw centering mechanism is matched with a lathe for use, an adapter plate is required to be arranged to be positioned with a lathe spindle, a central positioning rod is connected with an oil cylinder in the lathe, the differential four-claw centering mechanism can also be used on a hydraulic fixture, and the purpose of positioning and clamping can be realized without manual operation; the differential four-claw centering mechanism has the advantages of wide application, simple operation, simple structure, good reliability and the like.
Drawings
Fig. 1 is a schematic top view of the differential four-claw centering mechanism of the present invention.
Fig. 2 is a cross-sectional view AA of fig. 1.
Fig. 3 is a BB cross-sectional view of fig. 1.
FIG. 4 is a schematic axial side view of the differential four-pawl centering mechanism of the present invention.
In the figure: 1. a substrate; 2. a cage connecting rod; 3. an inner barrel; 4. an outer cylinder; 5. a gourd pin; 6. a conductive block A; 7. a rotating shaft; 8. a slider; 9. a claw A; 10. a conductive block B; 11. and a claw B.
Detailed Description
The invention will be further described with reference to the accompanying drawings:
as shown in fig. 1, 2 and 3, the present embodiment includes a base 1, a holder link 2, an inner cylinder 3, an outer cylinder 4, a gourd pin 5, a conducting block A6, a conducting block B10, a rotating shaft 7, a slider 8, a jaw A9 and a jaw B11, wherein an inner bottom of the base 1 is provided with a mounting hole and an end portion is provided with four equally-distributed sliding grooves, the mounting hole is used for mounting the inner cylinder 3 and the outer cylinder 4, the sliding grooves are used for mounting the conducting block a, the conducting block B10 and the slider 8, and the movement of the conducting block a, the conducting block B10 and the slider 8 can be limited.
The inner barrel 3 and the outer barrel 4 are assembled in an installation hole of the base body 1 through the retainer connecting rod 2 in a matching manner with the gourd pin 5, the outer wall of the outer barrel 4 is attached to the installation hole, the outer wall of the retainer connecting rod 2 is attached to the inner wall of the outer barrel 4, the outer wall of the inner barrel 3 is attached to the inner wall of the retainer connecting rod 2, the inner barrel 3 and the outer barrel 4 are provided with corresponding through holes, the gourd pin 5 penetrates through the through holes, and spherical surfaces at two ends of the gourd pin 5 are respectively attached to;
the middle of the retainer connecting rod 2 is provided with a through hole for connecting a power source.
The gourd pin 5 is a part formed by spherical surfaces at two ends and a ball ring in the middle, the spherical surfaces at the two ends can be tangent with the through holes of the inner cylinder 3 and the outer cylinder 4, and the spherical surface of the ball ring in the middle is tangent with the through hole of the retainer connecting rod 2.
Two transmission blocks A6 and two transmission blocks B10 are symmetrically installed and fixed in four sliding grooves of the base body 1 through rotating shafts, spherical surfaces at two ends of each transmission block A6 are installed in a tangent mode with an inner hole of the inner cylinder 3 and a fine groove of the sliding block 8, the clamping jaw A6 is connected with the sliding block 8 through key and screw positioning, and the transmission blocks A6 rotate around the rotating shafts 7 and are limited by the sliding grooves of the base body 1; the spherical surfaces of the two ends of the conducting block B10 are installed with the inner hole of the outer barrel 4 and the fine groove of the sliding block 8 in a tangent mode, the clamping jaw B11 is positioned and connected with the sliding block through a key and a screw, and the conducting block B10 rotates around the rotating shaft 7 and is limited by the sliding groove of the base body 1;
two mounting holes are symmetrically formed in the upper end of the inner cylinder 3 and are concentric with each other, the spherical surface at one end of the conducting block A6 is attached to the mounting hole in the inner cylinder 3, a fine hole is formed in the middle of the conducting block A6, the rotating shaft 7 penetrates through the fine hole of the conducting block A6 and is fixedly mounted in the fine hole in the sliding groove of the base body 1, the fine hole in the sliding groove of the base body 1 is a blind hole, and an internal thread is arranged at an opening of the fine hole in the sliding groove of the base body 1 and is used for mounting a jackscrew to prevent;
4 upper end symmetries of urceolus are equipped with two mounting holes and are concentric each other, the sphere of conducting block B10 one end and the mounting hole laminating on the urceolus 4, be equipped with the finish hole in the middle of conducting block B10, the finish hole fixed mounting that pivot 7 passed conducting block B10 is in the finish hole in the spout of base member 1, the finish hole in the spout of base member 1 is the blind hole, the opening part in the finish hole in the spout of base member 1 is equipped with the internal thread for the installation jackscrew prevents that the pivot from deviating from.
The clamping jaw A9 and the sliding block 8 are positioned through a key groove and fastened through screws, and the clamping jaw A9 can be adjusted in the opening size and the centering position by replacing different eccentric keys.
The clamping jaw B11 and the sliding block 8 are positioned through a key groove and fastened through a screw, and the opening size of the clamping jaw B11 and the position of the fixed center can be adjusted by replacing different eccentric keys of the clamping jaw B11.
The embodiment is only an illustration of the concept and implementation of the present invention, and is not a limitation, and technical solutions without substantial changes are still within the protection scope under the inventive concept.
Claims (7)
1. The utility model provides a differential four paws centering mechanism which characterized in that: the inner cylinder and the outer cylinder are matched with the gourd pin through the holder connecting rod and assembled in the mounting hole of the base body, the outer wall of the outer cylinder is attached to the mounting hole, the outer wall of the holder connecting rod is attached to the inner wall of the outer cylinder, the outer wall of the inner cylinder is attached to the inner wall of the holder connecting rod, the inner cylinder and the outer cylinder are provided with corresponding through holes, the gourd pin penetrates through the through holes, and spherical surfaces at two ends of the gourd pin are respectively attached to the inner wall of the mounting hole of the base body and a central shaft;
the two transmission blocks A and the two transmission blocks B are symmetrically installed and fixed in four sliding grooves of the base body through rotating shafts, spherical surfaces at two ends of the transmission blocks A are installed in a tangent mode with an inner hole of the inner cylinder and a fine groove of the sliding block, and the clamping jaw A is connected with the sliding block through key and screw positioning; the spherical surfaces of two ends of the transmission block B are installed with an inner hole of the outer barrel and a fine groove of the sliding block in a cutting way, and the clamping jaw B is positioned by a key and a screw and connected with the sliding block;
the upper end of the inner cylinder is symmetrically provided with two mounting holes which are mutually concentric, the spherical surface at one end of the transmission block A is attached to the mounting hole on the inner cylinder, the middle of the transmission block A is provided with a fine hole, the rotating shaft penetrates through the fine hole of the transmission block A and is fixedly mounted in the fine hole in the base body sliding chute, the fine hole in the base body sliding chute is a blind hole, and the opening of the fine hole in the base body sliding chute is provided with internal threads for mounting a jackscrew to prevent the rotating shaft from falling off;
the urceolus upper end symmetry is equipped with two mounting holes and is concentric each other, and the sphere of conduction block B one end is laminated with the mounting hole on the urceolus, is equipped with the finish hole in the middle of the conduction block B, the finish hole fixed mounting that the pivot passed conduction block B is in the finish hole in the base member spout, the finish hole in the base member spout is the blind hole, the opening part in the finish hole in the base member spout is equipped with the internal thread for the installation jackscrew prevents that the pivot from deviating from.
2. A differential four-jaw centering mechanism as defined in claim 1, wherein: the gourd pin is a part formed by spherical surfaces at two ends and a ball ring in the middle, the spherical surfaces at the two ends can be tangent to the through holes of the inner barrel and the outer barrel, and the spherical surface of the ball ring in the middle is tangent to the through hole of the connecting rod of the retainer.
3. A differential four-jaw centering mechanism as defined in claim 1, wherein: the transmission block A rotates around the rotating shaft and is limited by the sliding groove of the base body.
4. A differential four-jaw centering mechanism as defined in claim 1, wherein: the transmission block B rotates around the rotating shaft and is limited by the sliding groove of the base body.
5. A differential four-jaw centering mechanism as defined in claim 1, wherein: the clamping jaw A and the sliding block are positioned through a key groove and fastened through screws, and the opening size of the clamping jaw A and the position of the fixed center can be adjusted by replacing different eccentric keys.
6. A differential four-jaw centering mechanism as defined in claim 1, wherein: the clamping jaw B and the sliding block are positioned through a key groove and fastened through a screw, and the opening size of the clamping jaw B and the position of the fixed center can be adjusted by replacing different eccentric keys of the clamping jaw B.
7. A differential four-jaw centering mechanism as defined in claim 1, wherein: and the middle of the retainer connecting rod is provided with a through hole for connecting a power source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911356991.6A CN111014745A (en) | 2019-12-25 | 2019-12-25 | Differential four-claw centering mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911356991.6A CN111014745A (en) | 2019-12-25 | 2019-12-25 | Differential four-claw centering mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111014745A true CN111014745A (en) | 2020-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911356991.6A Pending CN111014745A (en) | 2019-12-25 | 2019-12-25 | Differential four-claw centering mechanism |
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| CN (1) | CN111014745A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5368421A (en) * | 1986-06-16 | 1994-11-29 | Head; Kenneth A. J. | Tool holder and a tool therefor |
| CN201543852U (en) * | 2009-10-30 | 2010-08-11 | 浙江佳雪微特电机集团有限责任公司 | Self-centering floating clamp |
| CN102581327A (en) * | 2012-02-27 | 2012-07-18 | 太仓凯鑫电子有限公司 | High-reliability automatic centering device |
| CN102896351A (en) * | 2011-07-27 | 2013-01-30 | 褚桂君 | Chuck with centrifugal force compensation effect |
| CN208289017U (en) * | 2018-05-14 | 2018-12-28 | 上海合升机械有限公司 | A kind of Bidirectional self-centering device |
| CN209648142U (en) * | 2019-01-11 | 2019-11-19 | 河南威猛振动设备股份有限公司 | A kind of square tube beam Self-centering device |
-
2019
- 2019-12-25 CN CN201911356991.6A patent/CN111014745A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5368421A (en) * | 1986-06-16 | 1994-11-29 | Head; Kenneth A. J. | Tool holder and a tool therefor |
| CN201543852U (en) * | 2009-10-30 | 2010-08-11 | 浙江佳雪微特电机集团有限责任公司 | Self-centering floating clamp |
| CN102896351A (en) * | 2011-07-27 | 2013-01-30 | 褚桂君 | Chuck with centrifugal force compensation effect |
| CN102581327A (en) * | 2012-02-27 | 2012-07-18 | 太仓凯鑫电子有限公司 | High-reliability automatic centering device |
| CN208289017U (en) * | 2018-05-14 | 2018-12-28 | 上海合升机械有限公司 | A kind of Bidirectional self-centering device |
| CN209648142U (en) * | 2019-01-11 | 2019-11-19 | 河南威猛振动设备股份有限公司 | A kind of square tube beam Self-centering device |
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Application publication date: 20200417 |