High-position-precision positioning pin hole machining and clamping device for easily-deformed structural part

Abstract

The invention discloses a high-position-precision positioning pin hole machining clamping device for an easy-to-deform structural member, and relates to the technical field of machining, the high-position-precision positioning pin hole machining clamping device comprises a working table top and a workpiece, a support is placed on the working table top, a plurality of screw holes are formed in the upper step face of the support, a second pressing plate is placed on the support, and the second pressing plate is provided with a plurality of screw holes; a screw hole is formed in the second pressing plate, a screw is in threaded connection with the interior of the screw hole, the screw penetrates through the second pressing plate and is rotationally connected with the second pressing plate, the workpiece is placed on the support, and a pin hole is formed in the workpiece. When the to-be-machined workpiece is clamped, the end face of the to-be-machined workpiece is in a suspended state, pressing force is only applied to the annular rib face, in the cavity where the positioning pin hole of the to-be-machined workpiece is located, of the to-be-machined workpiece, the pressing state of the to-be-machined workpiece is basically kept consistent with the natural state (non-pressing state), and the to-be-machined workpiece is not affected by the clamping force; and the stability of the position size of the machined pin hole can be ensured.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing, and in particular to a high-precision positioning pin hole processing and clamping device for an easily deformable structural part. Background Art

[0002] When processing some structural parts, it is necessary to use a clamping device to fix the structural parts.

[0003] The traditional clamping method of the pressure plate is easy to cause deformation of the workpiece when processing high-strength aluminum alloy thin-walled shell structural parts due to its weak rigidity design structure. After the processing is completed, the position accuracy of the workpiece on the processing machine can be guaranteed. Once the offline detection is performed, the position tolerance of the pin hole is all out of tolerance, which cannot meet the assembly requirements of the product. To this end, we propose a high-precision positioning pin hole processing and clamping device for easily deformed structural parts. Summary of the invention

[0004] In view of the above problems existing in the existing processing clamping device, the present invention is proposed.

[0005] Therefore, the purpose of the present invention is to provide a high-precision positioning pin hole processing and clamping device for easily deformed structural parts, which solves the problem that the traditional pressure plate clamping and clamping method, when processing high-strength aluminum alloy thin-walled shell structural parts, is prone to cause workpiece deformation due to its weak rigidity design structure. After the processing is completed, the position accuracy of the workpiece on the processing machine tool can be guaranteed. However, once offline detection is performed, the position tolerances of the pin holes are all out of tolerance and cannot meet the assembly requirements of the product.

[0006] In order to achieve the above object, the present invention provides the following technical solutions: A high-precision positioning pin hole processing and clamping device for easily deformable structural parts includes a work table and a workpiece, a support is placed on the work table, a plurality of screw holes are opened on the upper step surface of the support, a second pressure plate is placed on the support, a screw is connected to the inner thread of the screw hole, the screw is arranged to pass through the second pressure plate, and the screw and the second pressure plate are rotatably connected, the workpiece is placed on the support, and the workpiece is provided with a pin hole.

[0007] Preferably, a vacant hole is provided on the upper step surface of the support, and the position of the vacant hole corresponds to that of the pin hole.

[0008] Preferably, a plurality of T-slots are provided on the work surface, a support block is placed on the work surface, T-slots are embedded with T-screws, nuts are threadedly connected to the T-screws, a first pressure plate is placed between the support block and the nut, through holes are provided on the support block and the first pressure plate, the through holes have a size corresponding to that of the circular cross-section of the T-screw, and the center of the through hole and the center of the nut are located at the same center point.

[0009] Preferably, a first anti-slip rubber pad is bonded to the pressing end surface of the first pressing plate.

[0010] Furthermore, a second anti-slip rubber pad is bonded to the pressing end surface of the second pressing plate.

[0011] In the above technical solution, the technical effects and advantages provided by the present invention are: According to the present invention, when the workpiece to be processed is clamped, the end face of the workpiece to be processed is in a suspended state, and the clamping force is only applied to the annular rib surface in the cavity where the positioning pin hole of the workpiece to be processed is located. The clamping state of the workpiece to be processed is basically consistent with the natural state (unclamped state), and is not affected by the clamping force, thereby ensuring the stability of the position size of the processed pin hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the enlarged structure of point A of the present invention; Figure 3 It is a schematic diagram of the workpiece structure of the present invention.

[0014] Description of reference numerals: 1. Work surface; 2. Support; 3. Support block; 4. First pressure plate; 5. Nut; 6. T-screw; 7. Second pressure plate; 8. Screw; 9. Workpiece; 10. Pin hole. DETAILED DESCRIPTION

[0015] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0016] The embodiment of the invention discloses a high position precision positioning pin hole machining and clamping device for a deformable structural part.

[0017] The present invention provides Figure 1-3 The shown device is a high-precision positioning pin hole processing and clamping device for an easily deformable structural part, comprising a work table 1 and a workpiece 9, a support 2 is placed on the work table 1, a plurality of screw holes are opened on the upper step surface of the support 2, a second pressure plate 7 is placed on the support 2, a screw 8 is connected to the inner thread of the screw hole, the screw 8 is arranged to pass through the second pressure plate 7, and the screw 8 is rotatably connected to the second pressure plate 7, the workpiece 9 is placed on the support 2, and a pin hole 10 is provided on the workpiece 9.

[0018] The present invention provides a high-precision positioning pin hole processing and clamping device for easily deformable structural parts. A vacant hole is opened on the upper step surface of the support 2. The position of the vacant hole corresponds to the position of the pin hole 10, which can facilitate the opening of the pin hole 10 on the workpiece to be processed.

[0019] The present invention provides a high-precision positioning pin hole processing and clamping device for easily deformable structural parts, a work table 1 is provided with a plurality of T-slots, a support block 3 is placed on the work table 1, a T-slot is embedded with a T-screw 6, a nut 5 is threadedly connected to the T-screw 6, a first pressure plate 4 is placed between the support block 3 and the nut 5, a through hole is provided on the support block 3 and the first pressure plate 4, the through hole and the circular cross-section of the T-screw 6 have the same size, and the center of the through hole and the center of the nut 5 are located at the same center point, which can facilitate the support 2 to be firmly installed on the work table 1.

[0020] The present invention provides a high-precision positioning pin hole processing and clamping device for easily deformable structural parts. A first anti-slip rubber pad is bonded to the pressing end surface of the first pressing plate 4, which can improve the fixing effect of the support block 3, thereby improving the stability of the support 2 during use.

[0021] The present invention provides a high-precision positioning pin hole processing and clamping device for easily deformable structural parts. A second anti-slip rubber pad is bonded to the pressing end surface of the second pressing plate 7, which can increase the friction between the workpiece to be processed, thereby improving the fixing effect of the workpiece to be processed.

[0022] When in use, place the support 2 on the work table 1 of the processing machine tool, use a table to align the center line of the two vacant holes, and set it as the X-axis of the processing coordinate system, insert two T-screws 6 into the T-slot of the work table 1 where the support 2 is located, place two support blocks 3 and two first pressure plates 4 in sequence, and then use nuts 5 to fix the support 2 on the work table 1, then place the workpiece to be processed on the upper step surface of the support 2, and the lower end surface of the workpiece to be processed is in a suspended state at this time, use a table to align the workpiece to be processed, so that the position of the processed pin hole 10 coincides with the vacant hole of the support 2, to ensure that the vacant hole of the support 2 plays a vacant role when processing the pin hole 10, and then use the second pressure plate 7 and screws 8 to fix the workpiece to be processed on the support 2, and then you can start processing the pin hole 10.

[0023] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-precision positioning pin hole processing and clamping device for a deformable structural part, comprising a work surface (1) and a workpiece (9), characterized in that: A support (2) is placed on the work surface (1), a plurality of screw holes are provided on the upper step surface of the support (2), a second pressing plate (7) is placed on the support (2), a screw (8) is threadedly connected to the inner thread of the screw hole, the screw (8) is arranged to pass through the second pressing plate (7), and the screw (8) is rotatably connected to the second pressing plate (7), the workpiece (9) is placed on the support (2), and a pin hole (10) is provided on the workpiece (9).

2. The high position accuracy positioning pin hole processing and clamping device for easily deformable structural parts according to claim 1 is characterized in that: An empty hole is provided on the upper step surface of the support (2), and the position of the empty hole corresponds to that of the pin hole (10).

3. The high position accuracy positioning pin hole processing and clamping device for easily deformable structural parts according to claim 1 is characterized in that: The work surface (1) is provided with a plurality of T-shaped slots, a support block (3) is placed on the work surface (1), a T-shaped screw (6) is embedded in the T-shaped slot, a nut (5) is threadedly connected to the T-shaped screw (6), a first pressing plate (4) is placed between the support block (3) and the nut (5), the support block (3) and the first pressing plate (4) are provided with through holes, the through holes have the same size as the circular cross section of the T-shaped screw (6), and the center of the through hole and the center of the nut (5) are located at the same center point.

4. The high position accuracy positioning pin hole processing and clamping device for easily deformable structural parts according to claim 3 is characterized in that: A first anti-slip rubber pad is bonded to the pressing end surface of the first pressing plate (4).

5. The high position accuracy positioning pin hole processing and clamping device for easily deformable structural parts according to claim 1 is characterized in that: A second anti-slip rubber pad is bonded to the pressing end surface of the second pressing plate (7).

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