CN219254831U

CN219254831U - Easy aligning centering clamping device and equipment

Info

Publication number: CN219254831U
Application number: CN202223164056.XU
Authority: CN
Inventors: 葛杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-06-27
Anticipated expiration: 2032-11-29

Abstract

The utility model provides an easy-to-center centering clamping device and equipment, comprising: the clamping jaw A and the clamping jaw B with the V-shaped grooves are connected to the turntable through flange bearings and precise pins, and cam pairs a and B on the clamping jaws A and B are embedded into a transverse chute on the clamping jaw sliding block seat; the spring seat is fixed on the turntable; the clamping jaw sliding block seat is in sliding connection with the guide cushion block through the linear guide rail pair; the guide cushion block is provided with a positioning pin hole and a threaded hole, the guide cushion block is connected with the turntable through an a screw and a B screw, the a screw passes through a B hole to be screwed on an A hole, the B screw passes through a D hole to be screwed on an E hole, one end of the adjusting screw is rotationally connected with the turntable through a C hole, and the other end of the adjusting screw is in sliding connection with a notch F at the tail end of the guide cushion block; if the screw a and the screw b are loosened, the adjusting screw is rotated, the guide cushion block slightly rotates by taking the hole A as the axis, and the clamping center position of the clamping jaw is adjusted; and locking the screw a and the screw b, and repeating the centering clamping work normally.

Description

Easy aligning centering clamping device and equipment

Technical Field

The utility model relates to the field of automatic production and manufacturing in the industries of machining, light textile, steam friction matching parts, electronic components, manufacturing and assembling and the like, in particular to a centering clamping device and equipment easy to center.

Background

At present, most of clamping devices used in existing processing mechanisms drive clamping jaws to be closed through gears and other modes. Because the gear teeth and the gear grooves of the gears cannot be completely equidistant, and gaps are needed between the gear engagement teeth, after the clamping jaws are opened and closed, the center position of the multiple clamping is shifted, and the clamping center of the existing clamping mechanism cannot be adjusted, so that the whole manufacturing error of the mechanism cannot be corrected. In the scenes of processing, assembling, welding and the like of large-batch precise workpieces, each clamped workpiece on the turntable is required to be accurately aligned with different station processing equipment outside the turntable one by one, so that the required production work can be completed. Therefore, the repeated positioning precision of the clamping center of each set of clamping devices uniformly distributed on the turntable determines the yield and the operation efficiency of the whole production of the production equipment. How to improve the repeated positioning accuracy of the clamping centers of a single sleeve and all clamping mechanisms so as to improve the operation efficiency and the production yield of production equipment becomes a problem to be solved urgently.

Disclosure of Invention

The utility model provides an easy-aligning centering clamping device and equipment, which are used for solving the problems that in the prior art, the positioning precision of the clamping center position of a clamping mechanism is low and the clamping center position is not easy to adjust, so that when production equipment is produced, each clamped workpiece is inaccurate and unstable in alignment with station processing equipment (such as special equipment for punching, tapping, assembling, welding and the like) outside a turntable, the production yield is low, and the established operation can not be almost completed at high speed, so that the operation efficiency is low.

In a first aspect, an embodiment of the present utility model provides an easy-to-center centering and holding device, including: the clamping jaw A, the clamping jaw B, the clamping jaw sliding block seat, the linear guide rail pair, the guide cushion block, the spring seat and the adjusting screw;

the clamping jaw A is connected with the clamping jaw B through a flange bearing, and the flange bearing is locked through a precision pin;

the clamping jaw A is provided with a cam pair a, and the clamping jaw B is provided with a cam pair B; the cam pair a and the cam pair b are embedded in a sliding groove transversely arranged on the clamping jaw sliding block seat;

the clamping jaw sliding block seat is fixedly connected with the turntable sliding block, and the turntable sliding block and the turntable guide rail form the linear guide rail pair;

one end of the spring is arranged in the spring seat, and the other end of the spring is in close contact with the clamping jaw sliding block seat; the spring seat is fixed on the turntable;

the turntable guide rail is fixedly connected with the guide cushion block;

the guide cushion block is provided with a positioning pin hole in the middle, two sides of the positioning pin hole are respectively provided with two threaded holes, wherein the two large threaded holes are an A hole and an E hole, and the two small threaded holes and the positioning pin hole are used for fixing a turntable guide rail; the guide cushion block is connected with the turntable through a screw a and a screw B, the screw a penetrates through a hole B on the turntable and is screwed on a hole A, the screw B penetrates through a hole D on the turntable and is screwed on a hole E and is connected with the turntable, the diameter of the hole D is larger than that of the hole E, one end of the adjusting screw is matched with a hole C on the turntable to be rotationally connected with the turntable, and the other end of the adjusting screw is in sliding connection with a notch F at the tail end of the guide cushion block; and locking the screw a and the screw b, and repeating the centering clamping work normally.

In a second aspect, an embodiment of the present utility model provides an apparatus, where the apparatus includes a turntable, and a plurality of sets of centering and centering clamping devices shown in the embodiment of the present utility model are uniformly distributed and fixed on the turntable along an outer circle of the turntable.

The utility model provides an easy aligning centering clamping device, when a slide block seat moves left and right along a linear guide rail pair in a single degree of freedom, a slide groove perpendicular to the guide rail direction can forcedly push and pull cam pairs at the root parts of two clamping jaws to slide along the slide groove so as to drive the two clamping jaws to synchronously and reversely rotate with a precise pin as an axis, so that repeated centering clamping of a workpiece is realized.

In addition, the guide cushion block is adjusted to rotate through the adjusting screw, the guide rail angle of the linear guide rail pair is adjusted, so that the angle of the slide block seat on the linear guide rail slide block is adjusted, and then the cam pair at the root parts of the two clamping jaws is pushed by the slide groove vertical to the guide rail on the slide block seat, so that the two clamping jaws simultaneously rotate in the same direction around the precise pin by the same angle, the clamping center rotates by a certain angle around the precise pin, and the position of the clamping center (workpiece center) is adjusted. After the plurality of sets of easy-to-center centering clamping devices are uniformly distributed on the outer circle of the equipment turntable, the clamping center position of each easy-to-center centering clamping device can be precisely adjusted, the repeated positioning precision of the clamping centers of all clamping mechanisms is improved, and then the operation efficiency of production equipment is improved.

Drawings

FIG. 1 is a schematic structural view of an easy-to-center centering and holding device provided in an embodiment of the present utility model;

the device comprises a 1-flange bearing, a 2-clamping jaw A, a 3-clamping jaw B, a 41-cam pair a, a 42-cam pair B, a 5-guide cushion block, a 6-turntable guide rail, a 7-turntable slide block, an 8-clamping jaw slide block seat, a 9-spring seat, a 10-positioning pin hole, a 11-adjusting screw, a 13-precision pin, a 14-clamping jaw nut, a 15-workpiece, a 16-spring, a 17-turntable and an 18-stressed part.

Description of the embodiments

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the utility model. Rather, they are merely examples of apparatus and methods consistent with aspects of the utility model as detailed in the accompanying claims.

Fig. 1 is a schematic structural diagram of an easy-to-center centering and holding device provided by an embodiment of the utility model, which is suitable for equipment for processing electronic devices. This easy aligning centering adds holds device includes: clamping jaw A2, clamping jaw B3, clamping jaw sliding block seat 8, linear guide rail pair, guide cushion block 5, spring 16, spring seat 9 and adjusting screw 11.

The clamping jaw A2 and the clamping jaw B3 are connected through a flange bearing 1, and the flange bearing 1 is locked through a precision pin 13. The clamping jaw A2 and the clamping jaw B3 are symmetrically arranged around the flange bearing 1 and rotate by taking the flange bearing 1 as an axis.

The clamping jaw A2 is provided with a cam pair a41, and the clamping jaw B3 is provided with a cam pair B42; the cam pair a41 and the cam pair b42 are embedded in a sliding groove transversely arranged on the clamping jaw sliding block seat 8. Jaw A2 and jaw B3 have respective front and root portions. The jaws A2 and B3 have a front end and a root, respectively. The root of the clamping jaw A2 is provided with a cam pair a41, and the root of the clamping jaw B3 is provided with a cam pair B42. The radial direction of the easy-to-center centering and clamping device in fig. 1 is called a longitudinal direction, and the direction perpendicular to the longitudinal direction is called a transverse direction. The clamping jaw sliding block seat 8 is transversely provided with a sliding groove, the cam pair a41 and the cam pair b42 are embedded into the sliding groove which is transversely arranged, and the cam pair a41 and the cam pair b42 slide in the sliding groove under the pushing of the clamping jaw sliding block seat 8. The precision pin 13 cooperates with a jaw nut 14, the jaw nut 14 providing a fulcrum for adjustment of the precision pin 13.

When the clamping jaw sliding block seat 8 moves longitudinally along the linear guide rail pair in a single degree of freedom, the transverse sliding groove can forcedly push and pull the cam pair at the root parts of the two clamping jaws to slide along the sliding groove, so that the two clamping jaws are driven to synchronously rotate reversely by taking the precise pin 13 as the axis, and the workpiece 15 is repeatedly centered and clamped. The forced single-degree-of-freedom sliding of the guide rail causes the vertical sliding groove to face the two cam pairs simultaneously, and simultaneously, the vertical sliding groove is rigidly pushed in a gapless fit way, and the mirror symmetrical structure of the two clamping jaws is known through simple geometric calculation, so long as the guide rail base is fixed, the precise pin 13 is fixed.

The clamping jaw sliding block seat 8 is fixedly connected with the turntable sliding block 7, and the turntable sliding block 7 and the turntable guide rail 6 form the linear guide rail pair. The linear guide rail pair consists of a turntable sliding block 7 and a turntable guide rail 6, wherein the turntable sliding block 7 moves on the turntable guide rail 6 along a single degree of freedom. The jaw slide block seat 8 may be fixed to the turntable slide block 7 in various ways. Optionally, the clamping jaw sliding block seat 8 is fixedly connected with the turntable sliding block 7 through four screws. Four groups of concentric holes are formed in the clamping jaw sliding block seat 8 and the turntable sliding block 7, and after screws are inserted into the concentric holes, the clamping jaw sliding block seat 8 and the turntable sliding block 7 are fixed.

One end of the spring 16 is installed in the spring seat 9 in a pressing mode, and the other end of the spring 16 is in close contact with the clamping jaw sliding block seat 8; the spring seat 9 is fixed to the turntable 17. One end of the spring 16 is embedded and fixed in the spring seat 9. The other end of the spring 16 is in close contact with the jaw slider seat 8. The spring force of the spring 16 provides thrust force for the clamping jaw sliding block seat 8 towards the left direction in fig. 1, and a cam pair in a sliding groove of the clamping jaw sliding block seat 8 drives the clamping jaw to complete closing.

The clamping jaw sliding block also comprises a force receiving part 18, wherein the force receiving part 18 is used for receiving pushing force tending to the right direction in fig. 1, the pushing force enables the clamping jaw sliding block seat 8 to move to the right side in fig. 1, and when the clamping jaw sliding block seat 8 moves to the right, the sliding groove pulls the cam pair a41 and the cam pair B42 to enable the clamping jaw A2 and the clamping jaw B3 to be opened.

The turntable guide rail 6 is fixedly connected with the guide cushion block 5. Optionally, the turntable guide rail 6 is further provided with a positioning pin hole 10 and a countersunk hole, the turntable guide rail 6 is fixedly connected with the guide cushion block 5 through a hexagonal screw in the countersunk hole and a positioning pin, the positioning pin penetrates through the positioning pin hole 10, and the hexagonal screw in the countersunk hole penetrates through the countersunk hole.

A positioning pin hole 10 is formed in the middle of the guide cushion block 5, two threaded holes are respectively formed in two sides of the positioning pin hole 10, two large threaded holes are an A hole and an E hole, and two small threaded holes and the positioning pin hole 10 are used for fixing the turntable guide rail 6; the guide cushion block 5 is connected with the turntable 17 through a screw a and a screw B, the screw a passes through a hole B on the turntable 17 and is screwed on a hole A, the screw B passes through a hole D on the turntable 17 and is screwed on a hole E to be connected with the turntable 17, the diameter of the hole D is larger than that of the hole E, one end of the adjusting screw 11 is matched with a hole C on the turntable 17 to be rotationally connected with the turntable 17, and the other end of the adjusting screw is in sliding connection with a notch F at the tail end of the guide cushion block 5; and locking the screw a and the screw b, and repeating the centering clamping work normally.

Further, the hole a is concentric with the hole B on the turntable 17, and when the screw a and the screw B are loosened, the diameter of the hole D is larger than that of the hole E, the guide cushion block is rotatably connected with the turntable 17 by taking the hole B as the axis, and when the screw a and the screw B are locked, the guide cushion block is fixedly connected with the turntable 17.

The hole A on the guide cushion block 5 is concentric with the hole B on the turntable 17, and the hole E of the guide cushion block 5 is concentric with the hole D of the turntable 17. The inner diameter of the hole D is larger than that of the hole B. The inner diameter of the hole A is the same as that of the hole E. The hole A and the hole B are concentric and have the same inner diameter. The D hole is concentric with the E hole, the inner diameter of the D hole is larger than that of the E hole, and the diameters of screws inserted into the D hole and the E hole are matched with the E hole.

The notch F at the tail end of the guide cushion block 5 is slidably linked with an adjusting screw 11, and the position of the tail end of the guide cushion block is adjusted by rotating the adjusting screw 11, so that the direction of the guide cushion block 5 is adjusted.

In one implementation, the adjusting screw 11 includes a cylindrical surface C0 and an eccentric cylindrical surface F0, where the cylindrical surface C0 and the eccentric cylindrical surface F0 form an eccentric stepped cylindrical surface; the cylindrical surface C0 is concentric with the C hole on the turntable 17 and is rotationally connected with the turntable 17; the eccentric cylindrical surface F0 is matched with the notch F on the guide cushion block 5 and is in sliding connection with the guide cushion block 5.

The cylindrical surface C0 is positioned in the opening of the turntable 17, the top of the cylindrical surface C0 side of the adjusting screw 11 is provided with a straight slot, and a user can insert the tool such as a straight screwdriver into the straight slot to drive the straight slot to rotate. When the straight slot rotates, the cylindrical surface C0 rotates to drive the eccentric cylindrical surface F0 to rotate, and the eccentric cylindrical surface F0 is matched with the notch F at the tail end of the guide pad so as to enable the notch F to deviate. When the notch F is deviated, the guide cushion block 5 rotates by taking the hole A as the axis.

In one implementation, the front ends of the clamping jaw A2 and the clamping jaw B3 are provided with mirrored symmetrical V-shaped grooves.

The front ends of the two clamping jaws are mirror-symmetrical V-shaped grooves, and the clamping jaws synchronously and reversely rotate, namely, the two clamping jaws synchronously move in an opening and closing way of the mirror-symmetrical V-shaped grooves, so that repeated centering clamping of a cylindrical workpiece or a square workpiece with a regular diamond-shaped cross section is realized.

Further, the embodiment of the utility model also provides equipment, which comprises a turntable 17, wherein a plurality of centering and centering clamping devices shown in the embodiment are uniformly distributed and fixed on the turntable 17 along the excircle of the turntable. By adjusting each aligning mechanism, the manufacturing error can be properly corrected, thereby improving the repeated positioning accuracy of the clamping centers of the single sleeve and all clamping mechanisms.

Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. This utility model is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.

It is to be understood that the utility model is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.

Claims

1. An easy-to-center centering clamping device, comprising: the clamping jaw A, the clamping jaw B, the clamping jaw sliding block seat, the linear guide rail pair, the guide cushion block, the spring seat and the adjusting screw;

the turntable guide rail is fixedly connected with the guide cushion block;

2. The easy-to-center centering and clamping device of claim 1, wherein the jaw slide block seat is fixedly connected with the turntable slide block by four screws.

3. The easy-to-center centering clamping device according to claim 1, wherein the turntable guide rail is further provided with a positioning pin hole and a countersunk hole, the turntable guide rail is fixedly connected with the guide cushion block through a countersunk inner hexagonal screw and a positioning pin, the positioning pin penetrates through the positioning pin hole, and the countersunk inner hexagonal screw penetrates through the countersunk hole.

4. The easy-to-center centering clamping device according to claim 1, wherein the hole A is concentric with the hole B on the turntable, when the screw a and the screw B are loosened, the guide cushion block is rotatably connected with the turntable by taking the hole B as an axis, and when the screw a and the screw B are locked, the guide cushion block is fixedly connected with the turntable.

5. The easy-to-center centering and holding device according to claim 1, wherein the adjusting screw comprises a cylindrical surface C0 and an eccentric cylindrical surface F0, and the cylindrical surface C0 and the eccentric cylindrical surface F0 form an eccentric stepped cylindrical surface; the cylindrical surface C0 is concentric with the C hole on the turntable and is rotationally connected with the turntable; the eccentric cylindrical surface F0 is matched with the notch F on the guide cushion block and is in sliding connection with the guide cushion block.

6. The easy-to-center centering and clamping device according to claim 1, wherein the front ends of the clamping jaw A and the clamping jaw B are provided with mirror-symmetrical V-shaped grooves.

7. An apparatus comprising a turntable, wherein a plurality of sets of the easy-to-center centering and holding devices according to any one of claims 1 to 6 are uniformly distributed and fixed on the turntable along the outer circumference of the turntable.