CN216178622U

CN216178622U - Work fixture

Info

Publication number: CN216178622U
Application number: CN202122640913.8U
Authority: CN
Inventors: 陈宗元; 罗文库; 范小成
Original assignee: Spaco Intelligent Technology Dongguan Co ltd
Current assignee: Spaco Intelligent Technology Dongguan Co ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-04-05
Anticipated expiration: 2031-10-29

Abstract

The utility model discloses a tool clamp which is used for positioning and clamping an annular workpiece and comprises a base and a sliding seat, wherein one side of the base is provided with a first convex part in an upward protruding manner, the other side of the base is provided with a sliding groove in a downward recessed manner, the sliding seat is arranged in the sliding groove in a sliding manner, the sliding seat is provided with a second convex part in an upward protruding manner, the second convex part is arranged opposite to the first convex part, the first convex part and the second convex part are configured to be sleeved with the annular workpiece, the sliding of the sliding seat in the sliding groove enables the second convex part to be close to the first convex part to be sleeved with the annular workpiece or to be far away from the first convex part to tightly support the annular workpiece, and the second clamping part is far away from the first clamping part to provide a radial outward force for the annular workpiece so as to tightly support the annular workpiece sleeved on the first clamping part and the second clamping part, so that the positioning precision of the annular workpiece is improved; the universality of the tool clamp is improved by adjusting the distance between the first clamping part and the second clamping part, so that the tool clamp disclosed by the utility model can improve the positioning precision, and is strong in universality, simple in structure and convenient to operate.

Description

Work fixture

Technical Field

The utility model relates to a tool clamp, in particular to a tool clamp for clamping an annular workpiece.

Background

When machining (e.g., turning, grinding, drilling) annular workpieces (particularly large diameter thin annular workpieces), a three-jaw chuck is typically used to clamp the workpiece to be machined. The large-diameter thin annular workpiece is not large in thickness and inconvenient to clamp, so that the workpiece is prone to being skewed in clamping, the large diameter can enlarge the skew degree, the positioning is not accurate, the problem that the workpiece is damaged due to uneven stress on the end face of the workpiece is prone to occurring, and the workpiece is damaged or scrapped. Therefore, the three-jaw chuck is not suitable for machining an annular workpiece.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a tool clamp which can improve positioning accuracy, has strong universality and simple structure and is convenient to operate.

In order to achieve the purpose, the utility model discloses a tool clamp which is used for positioning an annular workpiece and comprises a base and a sliding seat, wherein one side of the base is provided with a first convex part in an upward protruding mode, the other side of the base is provided with a sliding groove in a downward recessed mode, the sliding seat is arranged in the sliding groove in a sliding mode, the sliding seat is provided with a second convex part in an upward protruding mode, the second convex part is arranged opposite to the first convex part, the first convex part and the second convex part are configured to be sleeved with the annular workpiece, and the sliding seat slides in the sliding groove to enable the second convex part to be close to the first convex part to be sleeved with the annular workpiece or to be far away from the first convex part to tightly support the annular workpiece.

Optionally, frock clamp still includes the screw, be equipped with the screw on the base, the one end threaded connection of screw is in the screw, the other end of screw is installed the slide, the screw is in relative in the slip direction of slide the slide is fixed, through screw in or screw out the screw can drive the slide slides in the spout.

Optionally, the slide is equipped with the mounting groove that runs through to one side, the mounting groove is including leading to groove and spacing groove, it runs through to lead to the groove in the sliding direction of slide the slide and with the screw is relative, spacing groove connection is in lead to the groove and keep away from the one end of screw, spacing groove with lead to between the groove and be formed with spacing shoulder, spacing groove is kept away from the one end that leads to the groove is formed with spacing wall, the screw by one side of mounting groove is put into the mounting groove, the cap portion of screw is placed spacing groove and spacing shoulder with between the spacing wall.

Optionally, the sliding seat is further provided with a through hole which is used for communicating the limiting groove with the outside in the sliding direction of the sliding seat.

Optionally, an end wall of the first convex portion away from the second convex portion is inclined from top to bottom toward the direction of the second convex portion, and an end wall of the second convex portion away from the first convex portion is inclined from top to bottom toward the direction of the first convex portion.

Optionally, the second protrusion is of a dovetail structure and includes a first end wall and a second end wall that are arranged oppositely, the width of the first end wall is greater than the width of the second end wall, the first end wall and the first protrusion are arranged in opposite directions, and the second end wall is inclined from top to bottom toward the direction of the first protrusion.

Optionally, the first convex portion is of a dovetail structure and includes a third end wall and a fourth end wall which are arranged oppositely, the width of the third end wall is greater than that of the fourth end wall, the third end wall and the second convex portion are arranged oppositely, and the fourth end wall is inclined from top to bottom towards the direction of the second convex portion.

Optionally, the cross sections of the sliding groove and the sliding seat are in a shape like a Chinese character 'tu'.

Optionally, the cross sections of the sliding groove and the second clamping portion are in a shape like a Chinese character 'tu'.

Optionally, the bottom of the base is provided with at least one positioning column protruding downwards.

Optionally, the bottom of the base is provided with at least two mounting holes.

Compared with the prior art, in the tool clamp, the sliding seat slides in the sliding groove towards the first convex part to enable the second convex part to be close to the first convex part, the annular workpiece is sleeved between the first convex part and the second convex part to realize initial positioning of the annular workpiece, then the sliding seat slides in the sliding groove towards the direction far away from the first convex part to drive the second convex part to be far away from the first convex part, radial outward force is provided for the annular workpiece to tightly support the annular workpiece sleeved on the first convex part and the second convex part, subsequent processing operation on the annular workpiece is facilitated, the sliding seat drives the second convex part to be far away from the first convex part, the first convex part and the second convex part can tightly support the annular workpiece, the annular workpiece is prevented from being inclined, and therefore the positioning accuracy of the annular workpiece is improved. In addition, the second convex part is driven by the sliding seat to be close to or far away from the first convex part, so that the distance between the first convex part and the second convex part can be adjusted, the annular workpieces of different specifications can be adapted, and the universality of the tool clamp is improved. Therefore, the tool clamp can improve the positioning precision, and is strong in universality, simple in structure and convenient to operate.

Drawings

Fig. 1 is a front view of a tool holder according to an embodiment of the present invention.

Fig. 2 is a sectional view taken along a-a in fig. 1.

Fig. 3 is a top view of a tooling fixture according to an embodiment of the present invention.

Fig. 4 is a structural diagram of a base of a tool holder according to an embodiment of the present invention.

FIG. 5 is a structural diagram of a second clamping portion of the tooling clamp according to an embodiment of the present invention

Detailed Description

In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.

Referring to fig. 1 to 5, an embodiment of the utility model discloses a tool clamp 100 for positioning and fixing an annular workpiece, which includes a base 10 and a sliding seat 20, wherein one side of the base 10 is provided with a first protrusion 11 protruding upward, the other side of the base 10 is provided with a sliding slot 12 recessed downward, the sliding seat 20 is slidably disposed in the sliding slot 12, the sliding seat 20 is provided with a second protrusion 21 protruding upward, the second protrusion 21 is disposed opposite to the first protrusion 11, the first protrusion 11 and the second protrusion 21 are configured to be sleeved with the annular workpiece, and sliding of the sliding seat 20 in the sliding slot 12 causes the second protrusion 21 to approach the first protrusion 11 to be sleeved with the annular workpiece or to be away from the first protrusion 11 to prop up the annular workpiece.

In this embodiment, the slide base 20 slides in the sliding groove 12 toward the first protruding portion 11 to make the second protruding portion 21 approach the first protruding portion 11, the annular workpiece is sleeved between the first protruding portion 11 and the second protruding portion 21, so as to realize initial positioning of the annular workpiece, then the slide base 20 slides in the sliding groove 12 toward the direction away from the first protruding portion 11 to drive the second protruding portion 21 to be away from the first protruding portion 11, so as to provide a radially outward force to the annular workpiece, so as to tightly support the annular workpiece sleeved on the first protruding portion 11 and the second protruding portion 21, thereby facilitating subsequent processing operation on the annular workpiece, the slide base 20 drives the second protruding portion 21 to be away from the first protruding portion 11, so as to realize tight support of the annular workpiece by the first protruding portion 11 and the second protruding portion 21, prevent the annular workpiece from tilting, and thereby improve the positioning accuracy of the annular workpiece. In addition, the slide 20 drives the second convex portion 21 to be close to or far away from the first convex portion 11, so that the distance between the first convex portion 11 and the second convex portion 21 can be adjusted, the tool fixture 100 can adapt to annular workpieces of different specifications, and the universality of the tool fixture 100 is improved. Therefore, the tool clamp 100 of the present invention has the advantages of improved positioning accuracy, strong versatility, simple structure and convenient operation.

In this embodiment, when the annular workpiece needs to be removed from the tool holder 100, the annular workpiece can be loosened and removed by sliding the slide 20 in a direction to approach the first protruding portion 11 so that the second protruding portion 21 approaches the first protruding portion 11.

In some embodiments, as shown in fig. 2 and 3, the tooling fixture 100 further includes a screw 30, the base 10 is provided with a screw hole 13, one end of the screw 30 is screwed into the screw hole 13, the other end of the screw 30 is mounted on the sliding base 20, the screw 30 is fixed relative to the sliding base 20 in the sliding direction of the sliding base 20, and the sliding base 20 can be driven to slide in the sliding groove 12 by screwing or unscrewing the screw 30 into or out of the screw hole 13.

In this embodiment, the screw 30 is in threaded connection with the screw hole 13, and when the screw 30 is screwed into the screw hole 13, the screw 30 drives the sliding seat 20 to slide in the sliding groove 12, so that the second protrusion 21 is close to the first protrusion 11; due to the threaded connection between the screw 30 and the screw hole 13, the screw 30 can be screwed into or out of the screw hole 13 according to the size of the annular workpiece, so that the distance between the first convex part 11 and the second convex part 21 can be sleeved into the annular workpieces with different sizes; when the annular workpiece needs to be tightened, the screw 30 is screwed out of the screw hole 13 to drive the sliding base 20 to slide in the sliding groove 12, so that the second convex portion 21 is far away from the first convex portion 11, and the annular workpiece sleeved on the first convex portion 11 and the second convex portion 21 is tightened. In this embodiment, the screw 30 is provided to facilitate the sliding of the slider 20 along the sliding slot 12.

Further, as shown in fig. 2 and 5, the sliding seat 20 is provided with a mounting groove (not labeled in the figures) penetrating to one side, the mounting groove includes a through groove 22 and a limiting groove 23, the through groove 22 penetrates through the sliding seat 20 in the sliding direction of the sliding seat 20 and is opposite to the screw hole 13, the limiting groove 23 is connected to one end of the through groove 22 far away from the screw hole 13, a limiting shoulder 24 is formed between the limiting groove 23 and the through groove 22, a limiting wall 25 is formed at one end of the limiting groove 23 far away from the through groove 22, the screw is placed into the mounting groove from one side of the mounting groove, and a cap of the screw is placed in the limiting groove 23 and is limited between the limiting shoulder 24 and the limiting wall 25.

In this embodiment, a mounting groove penetrating to one side is formed in the slide base 20, and the screw 30 is put into the mounting groove from one side of the mounting groove, so that the screw 30 can be conveniently mounted. The cap of the screw is limited by the limiting wall 25 and the limiting shoulder 24 formed by the limiting groove 23 and the through groove 22, and when the screw 30 is screwed into or out of the screw hole 13, the screw 30 cannot move relative to the sliding seat 20, so that the sliding seat 20 can be driven to slide along the sliding groove 12. Specifically, when the screw 30 is screwed into the screw hole 13, the slide seat 20 is driven to slide in the slide groove 12 under the stopping action of the limit shoulder 24 on the cap of the screw 30, so that the second protrusion 21 is close to the first protrusion 11; when the screw 30 is screwed out of the screw hole 13, the stopper of the limiting wall 25 against the cap of the screw 30 drives the sliding seat 20 to slide in the sliding groove 12, so that the second protrusion 21 is far away from the first protrusion 11.

Further, as shown in fig. 1 and 2, the sliding base is further provided with a through hole 26 communicating the limiting groove 23 with the outside in the sliding direction of the sliding base. In this embodiment, the through hole 26 connects the limiting groove 23 with the outside, so that the screw 30 can be conveniently screwed in and out, for example, a screwdriver can pass through the through hole 26 and be inserted into a slot or a notch of a cap of the screw 30 to screw the screw 30, and since the cap of the screw 30 is limited in the limiting groove 23, the screw 30 can drive the sliding seat 20 to slide along the sliding groove 12. When the screw 30 is locked, the slide 20 drives the second projection 21 to move towards the side close to the first projection 11, so as to loosen the annular workpiece; when the screw 30 is loosened, the slider 20 moves the second projection 21 toward a side away from the first projection 11, thereby tightening the annular workpiece.

In some embodiments, as shown in fig. 2, an end wall of the first protrusion 11 away from the second protrusion 21 is inclined from top to bottom toward the second protrusion 21, an end wall of the second protrusion 21 away from the first protrusion 11 is inclined from top to bottom toward the first protrusion 11, that is, an end wall of the first protrusion 11 contacting the annular workpiece and the base 10 are at an acute angle, an end wall of the second protrusion 21 contacting the annular workpiece and the slide 20 are at an acute angle, when the second convex portion 21 is far away from the first convex portion 11, the first convex portion 11 and the second convex portion 21 can provide a radial outward force to the annular workpiece, and at the same time, the end walls of the first convex portion 11 and the second convex portion 21 can provide an axial downward force to the annular workpiece, therefore, the radial and axial positioning of the annular workpiece is synchronously realized, the annular workpiece is prevented from being separated, and the positioning precision of the annular workpiece and the stability of tightly supporting the annular workpiece are further improved.

Further, as shown in fig. 2, 3 and 5, the second protrusion 21 is of a dovetail structure, and includes a first end wall 210 and a second end wall 211 that are opposite to each other, a width of the first end wall 210 is greater than a width of the second end wall 211, the first end wall 210 is disposed opposite to the first protrusion 11, and the second end wall 211 is inclined from top to bottom toward the first protrusion 11.

In this embodiment, the second protruding portion 21 is configured to be a dovetail structure, the second end wall 211 of the second protruding portion 21 is inclined from top to bottom toward the first protruding portion 11, and the second end wall 211 of the second protruding portion 21 can provide an axial downward force to the annular workpiece, and at the same time, the material cost of the second protruding portion 21 is saved, so that the production cost of the tool fixture 100 is reduced.

Furthermore, as shown in fig. 4, the first protrusion 11 may also be configured as a dovetail structure, the first protrusion 11 includes a third end wall 110 and a fourth end wall 111 that are oppositely disposed, a width of the third end wall 110 is greater than a width of the fourth end wall 111, the third end wall 110 is disposed opposite to the second protrusion 21, and the fourth end wall 111 is inclined from top to bottom toward the second protrusion 21, so as to further reduce the production cost of the tooling fixture 100.

In some embodiments, the cross-sections of the sliding groove 12 and the sliding seat 20 are in a shape like a Chinese character 'tu', so that the sliding seat 20 can be limited to slide in the sliding groove 12 without being loosened upwards, and the stability of clamping the annular workpiece is facilitated.

In some embodiments, as shown in fig. 1 and 3, at least one positioning column 14 is protruded downward from the bottom of the base 10, and the positioning column 14 is used to facilitate the initial positioning of the tooling fixture 100 on an operating machine (not shown), and it can be understood that a positioning hole or a positioning groove corresponding to the positioning column 14 is provided on the operating machine.

In some embodiments, as shown in fig. 1 to 4, at least two mounting holes 15 are formed in the bottom of the base 10, and the tool fixture 100 is fixed to an operation machine table through the mounting holes 15, so that clamping and subsequent operation of the tool fixture 100 on a workpiece are facilitated, and stability of the tool fixture 100 is improved. It can be understood that the operating platform is provided with a fixing structure, such as a screw and a screw hole, which is matched with the mounting hole 15.

The positioning process of the tool clamp 100 according to the embodiment of the utility model is as follows: the tool clamp 100 is positioned and fixed on an operating machine table through the positioning column 14 and the mounting hole 15, the screw 30 in the sliding seat 20 is locked with the screw hole 13 on the base 10, so that the sliding seat 20 slides inwards to drive the second convex part 21 to be close to the first convex part 11, the annular workpiece is sleeved between the first convex part 11 and the second convex part 21, the screw 30 is loosened, the sliding seat 20 slides outwards to drive the second convex part 21 to be far away from the first convex part 11, and the annular workpiece is tightly supported and positioned.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, therefore, the present invention is not limited by the appended claims.

Claims

1. The tool clamp is used for positioning an annular workpiece and is characterized by comprising a base and a sliding seat, wherein a first convex part is arranged on one side of the base in an upward protruding mode, a sliding groove is arranged on the other side of the base in a downward recessed mode, the sliding seat is arranged in the sliding groove in a sliding mode, a second convex part is arranged on the sliding seat in an upward protruding mode, the second convex part is arranged opposite to the first convex part, the first convex part and the second convex part are configured to be sleeved with the annular workpiece, and the sliding seat slides in the sliding groove to enable the second convex part to be close to the first convex part to be sleeved with the annular workpiece or to be far away from the first convex part to support the annular workpiece tightly.

2. The tooling clamp of claim 1, further comprising a screw, wherein the base is provided with a screw hole, one end of the screw is connected to the screw hole in a threaded manner, the other end of the screw is mounted on the sliding seat, the screw is fixed relative to the sliding seat in the sliding direction of the sliding seat, and the sliding seat can be driven to slide in the sliding groove by screwing in or unscrewing the screw from the screw hole.

3. The tooling fixture of claim 2, wherein the slide is provided with a mounting groove extending through the slide to one side, the mounting groove comprises a through groove and a limiting groove, the through groove extends through the slide in the sliding direction of the slide and is opposite to the screw hole, the limiting groove is connected to one end of the through groove far away from the screw hole, a limiting shoulder is formed between the limiting groove and the through groove, a limiting wall is formed at one end of the limiting groove far away from the through groove, the screw is placed into the mounting groove from one side of the mounting groove, and the cap of the screw is placed in the limiting groove and is limited between the limiting shoulder and the limiting wall.

4. The tooling fixture of claim 3 wherein the slide is further provided with a through hole communicating the limiting groove with the outside in the sliding direction of the slide.

5. The tooling clamp of claim 1, wherein an end wall of the first convex portion away from the second convex portion is inclined from top to bottom in a direction towards the second convex portion, and an end wall of the second convex portion away from the first convex portion is inclined from top to bottom in a direction towards the first convex portion.

6. The tooling fixture of claim 5, wherein the second protrusion is a dovetail structure and includes a first end wall and a second end wall that are disposed opposite to each other, wherein a width of the first end wall is greater than a width of the second end wall, the first end wall is disposed opposite to the first protrusion, and the second end wall is inclined from top to bottom toward the first protrusion.

7. The tooling fixture of claim 6, wherein the first protrusion is a dovetail structure and includes a third end wall and a fourth end wall that are disposed opposite to each other, wherein the width of the third end wall is greater than the width of the fourth end wall, the third end wall is disposed opposite to the second protrusion, and the fourth end wall is inclined from top to bottom toward the second protrusion.

8. The tooling fixture of claim 1 wherein the cross-sections of the slide and the slide are "male".

9. The tooling fixture of claim 1 wherein the base has at least one locating post projecting downwardly from a bottom thereof.

10. The tooling fixture of claim 1 wherein the base has at least two mounting holes in a bottom thereof.