Machining clamp for cavity parts

Abstract

The utility model provides a processing fixture for cavity type parts, the cavity type parts are provided with arc-shaped side walls, the side walls are provided with lug seats and positioning seats, the processing fixture comprises an objective table arranged in an axial pivoting mode, a clamping unit arranged on the objective table, and a positioning unit arranged on the objective table, wherein the clamping unit comprises a positioning column, an abutting column and a pressure applying rod, the positioning column is arranged in the positioning seat in a penetrating mode, the abutting column abuts against the side, close to the objective table, of the lug seat, and the pressure applying rod abuts against the side, back to the objective table, of the lug seat in a drivable mode. The utility model solves the problem of product deformation caused by a processing clamp for cavity parts in the prior art.

Description

Technical Field

[0001] The utility model relates to the field of mechanical equipment, in particular to a processing fixture for cavity parts. Background Art

[0002] In the rapid evolution of contemporary manufacturing, cavity parts have occupied a core position due to their unique structural form and wide range of engineering application needs. These parts are commonly found in aerospace, automobile manufacturing, precision instruments and other fields, and have extremely high requirements for component accuracy and reliability. However, their processing faces a pain point that has long plagued the industry - due to the limitations of traditional positioning technology, especially in the die-casting production stage, products often produce significant deformation due to uneven internal stress release, which directly affects the accuracy and efficiency of subsequent machining.

[0003] Traditional machining positioning usually relies on the outer contour of the part, ignoring the uncertainty caused by die-casting deformation, resulting in the instability of the positioning reference. The geometric deviation caused by deformation, coupled with the inherent limitations of the static positioning system, results in a large deviation between the tool path and the design intent during actual machining, which can easily lead to overcutting. Overcutting not only wastes materials, but is also likely to cause the key dimensions of the part to exceed the tolerance range, seriously affecting the performance and assembly adaptability of the final product, increasing unnecessary quality inspection and rework costs, and in severe cases, causing parts to be scrapped and low resource utilization.

[0004] The research and development of a new generation of processing technology that can adapt to deformation in real time, accurately position and dynamically adjust processing parameters is of great significance to promoting industry progress and meeting high-end manufacturing needs. Utility Model Content

[0005] The utility model aims to provide a processing fixture for cavity-type parts, so as to solve the problem that the processing fixture for cavity-type parts in the prior art causes product deformation.

[0006] In order to achieve the above-mentioned purpose of the utility model, one embodiment of the utility model provides a processing fixture for cavity-type parts, wherein the cavity-type parts have an arc-shaped side wall, and an ear seat and a positioning seat are arranged on the side wall. The processing fixture comprises: a stage arranged in an axially pivotable manner, and a clamping unit arranged on the stage, wherein the clamping unit comprises a positioning column, an abutment column and a pressure rod, the positioning column is passed through the positioning seat, the abutment column abuts against a side of the ear seat close to the stage, and the pressure rod can be driven to abut against a side of the ear seat facing away from the stage.

[0007] As a further improvement of an embodiment of the utility model, the processing fixture includes two supporting seats arranged opposite to each other, and the two sides of the stage in the axial direction are pivotally connected to the two supporting seats respectively.

[0008] As a further improvement of an embodiment of the utility model, the processing fixture includes at least three pre-positioning members arranged around the circumference of the cavity-like parts, and at least three of the pre-positioning members are respectively matched with the arc-shaped side walls to limit the position of the cavity-like parts on a plane parallel to the worktable.

[0009] As a further improvement of an embodiment of the utility model, at least three of the pre-positioning members are arranged on a side facing the arc-shaped side wall to form a limiting arc surface matching the side wall.

[0010] As a further improvement of an embodiment of the utility model, the processing fixture further includes a plurality of blowing pipes arranged circumferentially around the cavity-like part, and the opening direction of the blowing pipes is arranged toward the interior of the cavity-like part.

[0011] As a further improvement of an embodiment of the utility model, at least two pull rings are provided on the side of the stage on which the clamping unit is installed, at least one of the at least two pull rings is provided close to one side of the stage in the axial direction, and the remaining pull rings are provided close to the other side of the stage in the axial direction.

[0012] As a further improvement of an embodiment of the utility model, the number of the pull rings is set to two, the end surface of the stage mounting clamping unit is set to a rectangle, and the two pull rings are located at both ends of a diagonal of the rectangle.

[0013] As a further improvement of an embodiment of the utility model, the clamping unit further includes a driving structure, and the driving structure cooperates with the pressure rod in transmission to drive the pressure rod to move toward or away from the ear seat.

[0014] As a further improvement of an embodiment of the utility model, the driving structure includes a driving member and a bracket, the driving portion of the driving member is pivotally connected to one end of the pressure rod, the bracket is arranged on the fixed portion of the driving member and is pivotally connected to the portion between the two ends of the pressure rod, and the driving portion can be driven to drive the pressure rod to pivot relative to the bracket so that the other end of the pressure rod moves toward or away from the ear seat.

[0015] As a further improvement of an embodiment of the utility model, the driving member is configured as an oil cylinder or an air cylinder, the driving part is configured as a piston of the oil cylinder or the air cylinder, and the fixing part is configured as a cylinder body of the oil cylinder or the air cylinder.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] When using a processing fixture to clamp cavity parts, first insert the positioning column into the positioning seat for positioning, and then use the abutment column and the pressure rod to cooperate with the clamping ear seat to firmly clamp the cavity parts and avoid deformation of the cavity wall of the parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a processing fixture for clamping cavity parts provided by an embodiment of the utility model;

[0019] Figure 2 for Figure 1 Schematic diagram of the structure after removing cavity parts.

[0020] The above description of the drawings includes the following reference numerals:

[0021] 1. Cavity parts;

[0022] 11. Side wall;

[0023] 111. Ear seat; 112. Positioning seat;

[0024] 2. Stage;

[0025] 3. Clamping unit;

[0026] 31. Positioning column;

[0027] 32. Butt column;

[0028] 33. Pressure rod;

[0029] 34. Driving structure;

[0030] 341, driving member; 3411, driving portion; 3412, fixing portion;

[0031] 342, bracket;

[0032] 4. Support seat;

[0033] 5. Pre-positioning parts;

[0034] 51. Limiting arc surface;

[0035] 6. Blow the air tube;

[0036] 7. Pull ring. DETAILED DESCRIPTION

[0037] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0038] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0039] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0040] In order to solve the problem that the processing fixture for cavity parts in the prior art causes product deformation, the utility model provides a processing fixture for cavity parts.

[0041] like Figure 1-2 As shown, an embodiment of the utility model provides a processing fixture for cavity-type parts, wherein the cavity-type part 1 has an arc-shaped side wall 11, and an ear seat 111 and a positioning seat 112 are arranged on the side wall 11, wherein the processing fixture includes: a stage 2 arranged in an axially pivotable manner, and a clamping unit 3 arranged on the stage 2, wherein the clamping unit 3 includes a positioning column 31, an abutment column 32 and a pressure rod 33, the positioning column 31 is passed through the positioning seat 112, the abutment column 32 abuts against a side of the ear seat 111 close to the stage 2, and the pressure rod 33 can be driven to abut against a side of the ear seat 111 facing away from the stage 2.

[0042] With such arrangement, when a processing fixture is used to clamp the cavity-type part 1, the positioning column 31 is first inserted into the positioning seat 112 for positioning, and then the abutment column 32 and the pressure rod 33 cooperate with the clamping ear seat 111 to firmly clamp the cavity-type part 1 to avoid deformation of the cavity wall of the part.

[0043] Furthermore, the processing fixture includes two supporting seats 4 that are arranged opposite to each other, and the two sides of the stage 2 in the axial direction are pivotally connected to the two supporting seats 4 respectively.

[0044] Optionally, a driving device may be provided inside the support base 4 to drive the stage 2 to pivot relative to the support base 4 . With this arrangement, the processing debris on the stage 2 can be dumped to a position below the stage 2 through pivoting.

[0045] Furthermore, the processing fixture includes at least three pre-positioning members 5 arranged around the circumference of the cavity-like part 1 , and the at least three pre-positioning members 5 can enclose a containing space for accommodating the cavity-like part 1 and pre-position the cavity-like part 1 .

[0046] Specifically, at least three of the pre-positioning members 5 are respectively matched with the arc-shaped side walls to limit the position of the cavity-like component 1 on a plane parallel to the stage 2 .

[0047] Preferably, at least three of the pre-positioning members 5 are configured with a limiting arc surface 51 that matches the arc-shaped side wall 11. This configuration allows the pre-positioning members 5 to better fit the side wall 11 of the cavity-like component 1, resulting in a better pre-positioning effect.

[0048] Furthermore, the fixture also includes a plurality of blowing pipes 6 arranged around the circumference of the cavity-like part 1 , and the opening directions of the blowing pipes 6 are arranged toward the interior of the cavity-like part 1 .

[0049] With such arrangement, when the processing fixture clamps the cavity-type part 1 for turning and other processing, the generated debris can be blown into the cavity-type part 1 at any time to avoid splashing. After the processing is completed, the debris is centrally processed by pivoting the stage 2.

[0050] Furthermore, at least two pull rings 7 are provided on the side of the stage 2 on which the clamping unit is installed, at least one of the at least two pull rings 7 is provided close to one side of the stage 2 in the axial direction, and the remaining pull rings 7 are provided close to the other side of the stage in the axial direction.

[0051] In this arrangement, by inserting a traction rope in the pull rod 7, the processing fixture can be lifted by the traction rope and moved to a proper position in the workshop.

[0052] Furthermore, the number of the pull rings 7 is set to two, the end surface of the stage 2 for mounting the clamping unit 3 is set to be a rectangle, and the two pull rings 7 are located at both ends of a diagonal of the rectangle. Such a setting is more conducive to the traction rope to pull the processing fixture.

[0053] refer to Figure 2 As shown, the clamping unit 3 further includes a driving structure 34, which is in transmission cooperation with the pressure rod 33 to drive the pressure rod 33 to move toward or away from the ear seat 111. In this way, the ear seat 111 can be pressed by the pressure rod 33, so that the cavity-type part 1 can be well fixed.

[0054] Specifically, the driving structure 34 includes a driving member 341 and a bracket 342. The driving portion 3411 of the driving member is pivotally connected to one end of the pressure rod 33. The bracket 342 is disposed on the fixing portion 3412 of the driving member and is pivotally connected to a portion between the two ends of the pressure rod 33. The driving portion 3411 can be driven to drive the pressure rod 33 to pivot relative to the bracket 342, so that the other end of the pressure rod 33 moves toward or away from the ear seat 111. Thus, the ear seat 111 is pressed or released.

[0055] Optionally, the driving member 341 may be configured as an oil cylinder or an air cylinder, the driving portion 3411 may be configured as a piston of the oil cylinder or the air cylinder, and the fixing portion 3412 may be configured as a cylinder body of the oil cylinder or the air cylinder.

[0056] In summary, the embodiments of the present invention achieve the following technical effects:

[0057] When using a processing fixture to clamp the cavity-type part 1, first insert the positioning column 31 into the positioning seat 112 for positioning, and then use the abutment column 32 and the pressure rod 33 to cooperate with the clamping ear seat 111, so that the cavity-type part 1 is firmly clamped to avoid deformation of the cavity wall of the part.

[0058] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0059] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0060] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0061] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A processing fixture for cavity parts, wherein the cavity parts have an arc-shaped side wall, and the side wall is provided with an ear seat and a positioning seat, characterized in that: The processing fixture includes: a worktable arranged in an axially pivotable manner, and a clamping unit arranged on the worktable, wherein the clamping unit includes a positioning column, an abutment column and a pressure rod, the positioning column is passed through the positioning seat, the abutment column abuts against the side of the ear seat close to the worktable, and the pressure rod can be driven to abut against the side of the ear seat facing away from the worktable.

2. The processing fixture according to claim 1, characterized in that: The processing fixture comprises two supporting seats arranged opposite to each other, and two sides of the stage in the axial direction are pivotally connected to the two supporting seats respectively.

3. The processing fixture according to claim 1, characterized in that: The processing fixture includes at least three pre-positioning members arranged around the circumference of the cavity-like part, and the at least three pre-positioning members are respectively matched with the arc-shaped side walls to limit the position of the cavity-like part on a plane parallel to the worktable.

4. The processing fixture according to claim 3, characterized in that: A surface of at least three of the pre-positioning members facing the arc-shaped side wall is arranged to form a limiting arc surface matched with the side wall.

5. The processing fixture according to claim 1, characterized in that: The processing fixture also includes a plurality of air blowing pipes arranged around the circumference of the cavity-like part, and the opening directions of the air blowing pipes are arranged toward the interior of the cavity-like part.

6. The processing fixture according to claim 1, characterized in that: At least two pull rings are also arranged on the side of the stage where the clamping unit is installed, at least one of the at least two pull rings is arranged close to one side of the stage in the axial direction, and the remaining pull rings are arranged close to the other side of the stage in the axial direction.

7. The processing fixture according to claim 6, characterized in that: The number of the pull rings is set to two, the end surface of the stage mounting clamping unit is set to be a rectangle, and the two pull rings are located at both ends of a diagonal line of the rectangle.

8. The processing fixture according to claim 1, characterized in that: The clamping unit further comprises a driving structure, and the driving structure is in transmission cooperation with the pressure rod to drive the pressure rod to move toward or away from the ear seat.

9. The processing fixture according to claim 8, characterized in that: The driving structure includes a driving member and a bracket. The driving portion of the driving member is pivotally connected to one end of the pressure rod. The bracket is arranged on the fixed portion of the driving member and is pivotally connected to the portion between the two ends of the pressure rod. The driving portion can be driven to drive the pressure rod to pivot relative to the bracket so that the other end of the pressure rod moves toward or away from the ear seat.

10. The processing fixture according to claim 9, characterized in that: The driving member is configured as an oil cylinder or an air cylinder, the driving part is configured as a piston of the oil cylinder or the air cylinder, and the fixing part is configured as a cylinder body of the oil cylinder or the air cylinder.

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