CN211966666U

CN211966666U - Clamp

Info

Publication number: CN211966666U
Application number: CN202020674942.9U
Authority: CN
Inventors: 柯珍琼
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-28
Filing date: 2020-04-28
Publication date: 2020-11-20
Anticipated expiration: 2030-04-28

Abstract

The utility model relates to a clamp, which comprises a body, wherein a guide groove and a abdicating hole are arranged on the body, and the guide groove comprises a first groove body and a second groove body which are respectively arranged at the two sides of the abdicating hole; a clamp reference hole is formed in the body and penetrates through the bottom wall of the first groove body; a reference surface is arranged at one end, close to the abdicating hole, of the first groove body, and the reference surface and the clamp reference hole are coaxially arranged; the body is connected with the work piece through first pin and second pin, first pin and second pin wear to establish respectively in first cell body and the second cell body still be provided with in the first cell body and be used for pressing from both sides tight the clamping device of first pin makes the periphery of first pin with the reference surface closely laminates. The utility model discloses only need calibrate anchor clamps, and need not to calibrate the work piece.

Description

Clamp

Technical Field

The utility model relates to the technical field of machining, concretely relates to directional special fixture of wire cut electrical discharge machining bed class centering.

Background

In the die line cutting process of the extrusion die, a workpiece needs to be centered and directionally clamped, the workpiece is clamped by a clamping plate and a screw rod in the traditional workpiece clamping mode, and then the workpiece is calibrated, and the clamping mode needs to calibrate each workpiece to be machined, so that the time cost is high, and the production efficiency is low.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the to-be-solved technical problem of the utility model is to provide an anchor clamps, it only needs to calibrate anchor clamps, and need not to calibrate the work piece.

In order to solve the technical problem, the utility model provides a clamp, which comprises a body, wherein a guide groove and a abdicating hole are arranged on the body, and the guide groove comprises a first groove body and a second groove body which are respectively arranged at two sides of the abdicating hole; a clamp reference hole is formed in the body and penetrates through the bottom wall of the first groove body; a reference surface is arranged at one end, close to the abdicating hole, of the first groove body, and the reference surface and the clamp reference hole are coaxially arranged; the body is connected with the work piece through first pin and second pin, first pin and second pin wear to establish respectively in first cell body and the second cell body still be provided with in the first cell body and be used for pressing from both sides tight the clamping device of first pin makes the periphery of first pin with the reference surface closely laminates.

When the clamp is used, the clamp is firstly installed on a machine tool, the flatness of the top surface of the body, the direction of the guide groove and the central position of the clamp datum hole are calibrated, and the clamp is ensured to be accurately installed; then be connected first pin and second pin and the pinhole that the work piece corresponds, the work piece and this body coupling that will adorn first pin and second pin again for first pin is worn to establish in first cell body, and the second pin is worn to establish in the second cell body, and promotes the work piece and slides along the guide way, makes the periphery and the reference surface laminating of first pin, uses clamping device to press from both sides first pin tight at last. The utility model discloses in, only need when the sectional fixture, calibrate the position of anchor clamps, the clamping precision of work piece can be guaranteed to anchor clamps after the calibration, has improved production efficiency greatly, and the quality contrast traditional anchor clamps of the cutting of work piece, can promote the straightness quality of hanging down and position degree quality.

Preferably, the clamping device comprises a nut fixedly connected in the first groove body and a screw rod in threaded connection with the nut, and the screw rod is arranged along the length direction of the first groove body. When the clamping device is used, the screw rod is screwed, so that the end part of the screw rod is abutted to the periphery of the first pin, and the first pin is clamped and fixed.

Preferably, the both ends of second cell body link up respectively the outer wall of body with the lateral wall in hole of stepping down, first cell body is kept away from the one end in hole of stepping down link up the outer wall of body.

Preferably, the utility model provides a fixture further comprises a guide plate, the guide plate is connected with the abdicating hole in a sliding manner, and the sliding direction of the guide plate is consistent with the length direction of the second groove body; the top of deflector with the top of body flushes, and link up on the deflector and be provided with the third cell body, the width and the degree of depth of this third cell body respectively with the width and the degree of depth of second cell body are unanimous. The design of deflector can be so that the utility model discloses a work piece of the different size specifications of anchor clamps adaptation.

Preferably, two grooves are formed in the top of the body, the two grooves are respectively located at two ends of the second groove body in the length direction, the length direction of the grooves is consistent with the length direction of the second groove body, and one side of the grooves in the width direction penetrates through the inner wall of the abdicating hole; the upper parts of the two sides of the guide plate are provided with slide rails which are respectively positioned on the two sides of the third groove body in the length direction in a protruding mode, and the bottom surfaces of the slide rails are lapped on the bottom wall of the groove.

Preferably, the first pin and the second pin are both concentric pins, each concentric pin comprises a first cylindrical section and a second cylindrical section, the first cylindrical section is small in upper part and large in lower part, the first cylindrical section is used for being connected with the workpiece, and the second cylindrical section is used for being connected with the body.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic structural diagram of a clamp according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a body according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a guide plate according to an embodiment of the present invention;

fig. 4 is a schematic view of a connection structure of the body and the clamping device according to the embodiment of the present invention;

fig. 5 is a schematic view of a connection structure between a body and a workpiece according to an embodiment of the present invention.

Reference numerals:

1-body; 2-a nut; 3-a screw; 4-a workpiece; 5-a first pin; 6-a second pin; 7-a guide plate;

11-a hole of abdication; 12-a first trough body; 13-a second trough body; 14-jig datum holes; 15-a reference plane; 16-a groove; 71-a third trough body; 72-slide rail.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, this embodiment discloses a fixture, including body 1, be provided with the guide way and step down hole 11 on this body 1, the guide way is including locating the first cell body 12 and the second cell body 13 of the hole 11 both sides of stepping down separately, the both ends of second cell body 13 link up the outer wall of body 1 and the lateral wall of the hole 11 of stepping down respectively, the outer wall of body 1 is link up to the one end that the hole 11 of stepping down was kept away from to first cell body 12.

A stepped hole with a small upper part and a large lower part is arranged at the bottom of the body 1, the stepped hole comprises a clamp reference hole 14 positioned above, and the clamp reference hole 14 penetrates through the bottom wall of the first groove body 12; a reference surface 15 is provided at one end of the first groove body 12 close to the abdicating hole 11, and the reference surface 15 is provided coaxially with the jig reference hole 14.

A clamping device is further arranged in the first groove body 12 and comprises a nut 2 fixedly connected in the first groove body 12 and a screw rod 3 in threaded connection with the nut 2, and the screw rod 3 is arranged along the length direction of the first groove body 12.

When the clamp of the embodiment is used, the clamp is firstly installed on a machine tool, the flatness of the top surface of the body 1, the direction of the guide groove and the central position of the clamp datum hole 14 are calibrated, and the clamp is ensured to be accurately installed; then connecting the first pin 5 and the second pin 6 with corresponding pin holes of the workpiece 4, connecting the workpiece 4 provided with the first pin 5 and the second pin 6 with the body 1 (refer to fig. 5), so that the first pin 5 is arranged in the first groove body 12 in a penetrating manner, the second pin 6 is arranged in the second groove body 13 in a penetrating manner, pushing the workpiece to slide along the guide groove, so that the periphery of the first pin 5 is attached to the reference surface 15, and finally screwing the screw rod 3, so that the end part of the screw rod 3 is tightly abutted to the periphery of the first pin 5, thereby clamping and fixing the first pin 5 and further fixing the workpiece 4; the workpiece 4 of this embodiment ensures the clamping accuracy of the workpiece by means of one-hole centering (the center of the position of the pin hole connected with the first pin on the workpiece) and two-hole orientation (the central connecting line of the two pin holes connected with the first pin and the second pin on the workpiece).

Specifically, the first pin 5 and the second pin 6 are concentric pins, each of the concentric pins includes a first cylindrical section and a second cylindrical section, the first cylindrical section is used for being connected with the workpiece 4, the second cylindrical section is used for being connected with the body 1, the diameter of the second cylindrical section is consistent with the widths of the first groove body 12 and the second groove body 13, and the radius of the second cylindrical section is consistent with the radius of the reference surface 15. In practice, a plurality of specifications of concentric pins can be machined, and the first cylindrical section of each concentric pin is different in size so as to compensate machining errors of pin holes in a workpiece.

Further, the fixture of the embodiment further comprises a guide plate 7, the guide plate 7 is connected with the abdicating hole 11 in a sliding manner, and the sliding direction of the guide plate 7 is consistent with the length direction of the second groove body 13; the top of deflector 7 flushes with the top of body 1, and link up on deflector 7 and be provided with third cell body 71, and the width and the degree of depth of this third cell body 71 are unanimous with the width and the degree of depth of second cell body 13 respectively, and third cell body 71 is equivalent to the extension section of second cell body 13, and when work piece size is less, second pin 6 can wear to establish in this third cell body 71 for anchor clamps can be used for the work piece of the different dimensions of clamping specification.

Specifically, two grooves 16 are arranged at the top of the body 1, the two grooves 16 are respectively located at two ends of the second groove body 13 in the length direction, the length direction of the grooves 16 is consistent with the length direction of the second groove body 13, and one side of the grooves 16 in the width direction penetrates through the inner wall of the abdicating hole 11; the upper parts of the two sides of the guide plate 7 are respectively provided with a slide rail 72 protruding outwards, the two slide rails 72 are respectively positioned at the two sides of the third groove body 71 in the length direction, and the bottom surfaces of the slide rails 72 are overlapped on the bottom wall of the groove 16.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. A clamp, comprising:

the body is provided with a guide groove and a abdicating hole, and the guide groove comprises a first groove body and a second groove body which are respectively arranged at two sides of the abdicating hole;

a clamp reference hole is formed in the body and penetrates through the bottom wall of the first groove body;

a reference surface is arranged at one end, close to the abdicating hole, of the first groove body, and the reference surface and the clamp reference hole are coaxially arranged;

the body is connected with the work piece through first pin and second pin, first pin and second pin wear to establish respectively in first cell body and the second cell body still be provided with in the first cell body and be used for pressing from both sides tight the clamping device of first pin makes the periphery of first pin with the reference surface closely laminates.

2. A clamp as claimed in claim 1, wherein:

the clamping device comprises a nut fixedly connected in the first groove body and a screw rod in threaded connection with the nut, and the screw rod is arranged along the length direction of the first groove body.

3. A clamp as claimed in claim 1, wherein:

the both ends of second cell body link up respectively the outer wall of body with the lateral wall in hole of stepping down, first cell body is kept away from the one end in hole of stepping down link up the outer wall of body.

4. A clamp as claimed in claim 1, wherein:

the guide plate is connected with the abdicating hole in a sliding mode, and the sliding direction of the guide plate is consistent with the length direction of the second groove body;

the top of deflector with the top of body flushes, and link up on the deflector and be provided with the third cell body, the width and the degree of depth of this third cell body respectively with the width and the degree of depth of second cell body are unanimous.

5. A clamp according to claim 4, wherein:

the top of the body is provided with two grooves which are respectively positioned at two ends of the second groove body in the length direction, the length direction of the grooves is consistent with that of the second groove body, and one side of the grooves in the width direction penetrates through the inner wall of the abdicating hole;

the upper parts of the two sides of the guide plate are provided with slide rails which are respectively positioned on the two sides of the third groove body in the length direction in a protruding mode, and the bottom surfaces of the slide rails are lapped on the bottom wall of the groove.

6. A clamp as claimed in claim 1, wherein:

the first pin and the second pin are concentric pins, each concentric pin comprises a first cylindrical section and a second cylindrical section, the upper portion of each cylindrical section is small, the lower portion of each cylindrical section is large, the first cylindrical section is used for being connected with the workpiece, and the second cylindrical section is used for being connected with the body.