Anti-deformation clamp for workpiece machining

Abstract

The utility model relates to the technical field of clamps, and provides an anti-deformation clamp for workpiece machining. The positioning piece is connected to the supporting seat; the first pressing plate is movably arranged above the supporting seat; the second pressing plate is movably arranged above the supporting seat; the first hydraulic supporting cylinder and the second hydraulic supporting cylinder are arranged on the positioning piece; and the supporting column is rotationally arranged above the supporting seat. Compared with the prior art, the clamping device has the advantages that one side of the thin-wall structure is fixed through the first hydraulic supporting rod and the second pressing plate, the supporting column is driven by the second hydraulic supporting cylinder to abut against the lower portion of the thin-wall structure, the workpiece is fixed, and meanwhile the deformation problem of the thin-wall structure can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to an anti-deformation clamp used for workpiece processing. Background Art

[0002] like Figure 1 The figure shows an initial form (blank) workpiece made of aluminum alloy die casting. The workpiece consists of a main body and two thin-walled structures connected at one end of the main body. This workpiece is waiting for further machining. However, due to the poor dimensional stability of the workpiece in the blank stage, the use of traditional fixtures to fix the two thin-walled structures often causes deformation of the thin-walled structures. This deformation seriously affects the accuracy of the final machining of the workpiece and becomes a key challenge in the machining process. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an anti-deformation clamp for workpiece processing in view of the current status of the prior art.

[0004] The utility model solves the above technical problems by adopting the following technical solution: a deformation prevention fixture for workpiece processing is proposed, wherein the workpiece has a main body with two thin-walled structures, the two thin-walled structures are arranged at one end of the main body opposite to each other and spaced apart, and when the workpiece is fixed on the fixture, the gap between the two thin-walled structures is placed horizontally, and the fixture comprises:

[0005] Support seat;

[0006] A positioning member, connected to the support seat and used for positioning the workpiece;

[0007] A first pressing plate, which is movably arranged above the supporting seat, and is used to press the end surface of the main body to fix the workpiece on the fixture;

[0008] A second pressing plate, which is movably arranged above the supporting seat and is used to press the upper end surface of the thin-walled structure located above;

[0009] A first hydraulic support cylinder and a second hydraulic support cylinder, which are arranged on the positioning member, the first hydraulic support cylinder and the second hydraulic support cylinder are arranged on both sides of the workpiece, and the first hydraulic support cylinder is located below the second pressing plate;

[0010] A support column is rotatably arranged above the support seat and connected to the output end of the second hydraulic support cylinder. The support column is used to press against the lower end of the thin-walled structure above to provide support for the thin-walled structure.

[0011] In the above-mentioned anti-deformation fixture for workpiece processing, there are three first pressure plates, two of which are arranged on the support seat at intervals along the direction of the main body pointing to the thin-walled structure and are on the same side of the workpiece, and the other first pressure plate is arranged on the other side of the workpiece.

[0012] In the above-mentioned anti-deformation clamp for workpiece processing, the first pressure plate and the second pressure plate are both provided with a first threaded hole on one side of the workpiece pressed, and a first through hole corresponding to the first threaded hole is provided on the workpiece, and a bolt passes through the first threaded hole and is inserted into the first through hole for positioning the workpiece.

[0013] The above-mentioned anti-deformation fixture for workpiece processing also includes a driving member connected to the support seat, and the driving member is used to provide power for the movement of the first pressing plate and the second pressing plate on the support seat.

[0014] In the above-mentioned anti-deformation fixture for workpiece processing, the positioning member includes a positioning platform, which has a base and two extensions fixed to the upper end of the base, the two extensions are arranged at intervals and the gap between the two extensions is used to place the thin-walled structure below.

[0015] In the above-mentioned anti-deformation clamp for workpiece processing, the positioning member includes a positioning column, which is connected to the support seat and has a second through hole in the middle and a connecting part embedded in the support seat. The main body is provided with a third through hole opposite to the second through hole, and a pin passes through the third through hole and is inserted in the second through hole to provide positioning for the workpiece.

[0016] Compared with the prior art, the advantage of the utility model lies in that one side of the thin-walled structure is fixed by the first hydraulic support rod and the second pressure plate, and the support column is driven by the second hydraulic support cylinder to press against the bottom of the thin-walled structure. While fixing the workpiece, it can solve the deformation problem of the thin-walled structure. Moreover, for the problem of unstable size of the blank, the hydraulic support cylinder can also automatically adjust the rotation amplitude of the support column according to the thickness of the thin-walled structure clamped, thereby providing stable support for the workpiece and further improving the machining accuracy of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional image of the workpiece;

[0018] Figure 2 It is a three-dimensional diagram of this scheme;

[0019] Figure 3 This is the floor plan of this scheme;

[0020] Figure 4 yes Figure 3 Sectional view along AA direction;

[0021] Figure 5 A stereogram of the positioning stage.

[0022] In the figure, 1, main body; 2, thin-walled structure; 3, support seat; 4, positioning member; 5, first pressure plate; 6, second pressure plate; 7, first hydraulic support cylinder; 8, second hydraulic support cylinder; 9, support column; 10, first threaded hole; 11, first through hole; 12, driving member; 13, positioning platform; 14, base; 15, extension part; 16, positioning column; 17, second through hole; 18, connecting part; 19, third through hole. DETAILED DESCRIPTION

[0023] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0024] The present invention provides an anti-deformation fixture for workpiece processing, which is mainly used for fixture operation of a workpiece having a main body 1 and two thin-walled structures 2, wherein the two thin-walled structures 2 are relatively arranged at one end of the main body 1 and are spaced apart, and the fixture comprises: a support seat 3; a positioning member 4, which is connected to the support seat 3 and is used to position the workpiece; a first pressing plate 5, which is movably arranged above the support seat 3, and the first pressing plate 5 is used to press on the end face of the main body 1 to fix the workpiece on the fixture; a second pressing plate 6, which is movably arranged above the support seat 3 and is used to press on the upper end face of the thin-walled structure 2 located above; a first hydraulic support cylinder 7 and a second hydraulic support cylinder 8, which are arranged on the positioning member 4, and the first hydraulic support cylinder 7 and the second hydraulic support cylinder 8 are respectively arranged on both sides of the workpiece, and the first hydraulic support cylinder 7 is located below the second pressing plate 6; a support column 9, which is rotatably arranged above the support seat 3 and is connected to the output end of the second hydraulic support cylinder 8, and the support column 9 is used to press against the lower end of the thin-walled structure 2 located above to provide support for the thin-walled structure 2.

[0025] Based on the above embodiments, Figures 2 to 5 As shown, when the workpiece is fixed on the fixture, the gap between the two thin-walled structures 2 is placed horizontally. After the workpiece is placed on the positioning member 4, the first pressing plate 5 is pressed on the upper end of the main body 1 to fix the main body 1. The second pressing plate 6 and the first hydraulic support cylinder 7 are actuated to clamp the thin-walled structure 2 above. The second hydraulic support cylinder 8 drives the support column 9 to rotate and press against the lower end of the thin-walled structure 2 above to provide support for the thin-walled structure 2.

[0026] Hydraulic support cylinders, like oil cylinders, are important components of hydraulic systems. They have similarities in working principles, structures, application scenarios and performance, but there are also some differences. In terms of performance, the biggest difference between oil cylinders and hydraulic support cylinders lies in the load-bearing capacity. The load-bearing capacity of hydraulic support cylinders is often much smaller. At the same time, the structure of the hydraulic support cylinder is lighter, smaller in size and easier to install. One side of the thin-walled structure 2 is fixed by the first hydraulic support rod and the second pressure plate 6, and the support column 9 is driven by the second hydraulic support cylinder 8 to press against the bottom of the thin-walled structure 2. While fixing the workpiece, it can solve the deformation problem of the thin-walled structure 2. In addition, for the problem of unstable size of the blank, the hydraulic support cylinder can also automatically adjust the rotation amplitude of the support column 9 according to the thickness of the thin-walled structure 2 clamped, thereby providing stable support for the workpiece and further improving the machining accuracy of the workpiece.

[0027] Preferably, there are three first pressure plates 5, two of which are arranged on the support seat 3 at intervals along the direction of the main body 1 pointing to the thin-walled structure 2 and are on the same side of the workpiece, and the other first pressure plate 5 is arranged on the other side of the workpiece. In this solution, three first pressure plates 5 are arranged and the three first pressure plates 5 are arranged in a triangle, so that the fixation of the workpiece is more stably.

[0028] Furthermore, a first threaded hole 10 is provided on one side of the workpiece on which the first pressing plate 5 and the second pressing plate 6 are pressed, and a first through hole 11 corresponding to the first threaded hole 10 is provided on the workpiece. A bolt passes through the first threaded hole 10 and is inserted in the first through hole 11 for positioning the workpiece. In this scheme, through the first threaded hole 10 on the first pressing plate 5 and the second pressing plate 6, when the first pressing plate 5 and the second pressing plate 6 are pressed on the workpiece, the first threaded hole 10 is made to be opposite to the first through hole 11 on the workpiece, and finally the bolt is screwed into the first threaded hole 10 and then inserted into the first through hole 11, so as to improve the positioning accuracy of the workpiece in the above-mentioned working method.

[0029] In addition, the present solution further comprises a driving member 12 connected to the support seat 3, and the driving member 12 is used to provide power for the movement of the first pressing plate 5 and the second pressing plate 6 on the support seat 3. Preferably, the driving member 12 is a rotary cylinder.

[0030] like Figure 5 As shown, the positioning member 4 includes a positioning platform 13 having a base 14 and two extensions 15 fixed to the upper end of the base 14 . The two extensions 15 are arranged at intervals and the gap between the two extensions 15 is used to place the thin-walled structure 2 below.

[0031] Finally, the positioning member 4 includes a positioning column 16, which is connected to the support seat 3 and has a second through hole 17 in the middle and a connecting portion 18 embedded in the support seat 3. A third through hole 19 opposite to the second through hole 17 is provided on the main body 1. The pin passes through the third through hole 19 and is inserted into the second through hole 17 to provide positioning for the workpiece.

[0032] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0033] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0036] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the scope defined by the spirit of the present invention.

Claims

1. An anti-deformation fixture for workpiece processing, wherein the workpiece has a main body with two thin-walled structures, the two thin-walled structures are arranged oppositely at one end of the main body and spaced apart, characterized in that: When the workpiece is fixed on the fixture, the gap between the two thin-walled structures is placed horizontally, and the fixture includes: Support seat; A positioning member, connected to the support seat and used for positioning the workpiece; A first pressing plate, which is movably arranged above the supporting seat, and is used to press the end surface of the main body to fix the workpiece on the fixture; A second pressing plate, which is movably arranged above the supporting seat and is used to press the upper end surface of the thin-walled structure located above; A first hydraulic support cylinder and a second hydraulic support cylinder, which are arranged on the positioning member, the first hydraulic support cylinder and the second hydraulic support cylinder are arranged on both sides of the workpiece, and the first hydraulic support cylinder is located below the second pressing plate; A support column is rotatably arranged above the support seat and connected to the output end of the second hydraulic support cylinder. The support column is used to press against the lower end of the thin-walled structure above to provide support for the thin-walled structure.

2. The anti-deformation fixture for workpiece processing according to claim 1, characterized in that: There are three first pressing plates, two of which are arranged on the support seat at intervals along the direction from the main body to the thin-walled structure and are located on the same side of the workpiece, and another first pressing plate is arranged on the other side of the workpiece.

3. The anti-deformation fixture for workpiece processing according to claim 1, characterized in that: The first pressing plate and the second pressing plate are both provided with a first threaded hole on one side of the workpiece pressed against, and a first through hole corresponding to the first threaded hole is provided on the workpiece, and a bolt passes through the first threaded hole and is inserted into the first through hole for positioning the workpiece.

4. The anti-deformation fixture for workpiece processing according to claim 1, characterized in that: It also includes a driving member connected to the support base, and the driving member is used to provide power for the movement of the first pressing plate and the second pressing plate on the support base.

5. The anti-deformation fixture for workpiece processing according to claim 1, characterized in that: The positioning member comprises a positioning platform, which has a base and two extensions fixed to the upper end of the base, the two extensions are arranged at intervals, and the gap between the two extensions is used to place the thin-walled structure below.

6. The anti-deformation fixture for workpiece processing according to claim 1, characterized in that: The positioning member includes a positioning column, which is connected to the support seat and has a second through hole in the middle and a connecting portion embedded in the support seat. The main body is provided with a third through hole opposite to the second through hole. A pin passes through the third through hole and is inserted into the second through hole to provide positioning for the workpiece.

Images