Rotary pneumatic jig for workpiece positioning and pressing

Abstract

The utility model discloses a rotary pneumatic jig for workpiece positioning and pressing, which comprises an adapter plate, a heightening block, a bottom plate and a cushion block, a rotary air cylinder is arranged on the bottom plate, and the output end of the air cylinder is connected with a pull rod and a gland which can move up and down and rotate to press down a workpiece. The paired clamping blocks on the cushion block achieve synchronous and balanced clamping through the spring and the limiting block, and the positioning block assists in workpiece pre-positioning. The jig can be flexibly adjusted according to the size and the shape of a workpiece and can be rapidly installed on a production line, and the positioning precision and the production efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of workpiece processing positioning and clamping technology, and in particular to a rotary pneumatic fixture that achieves efficient workpiece positioning and reliable clamping through a rotary cylinder. It can be widely used in workpiece polishing, grinding, assembly and other subsequent processing procedures. Background Technology

[0002] In workpiece machining, stable and precise positioning and clamping are crucial for achieving high-quality processing. Many existing fixtures have simple structures, making it difficult to quickly and flexibly position and clamp workpieces of different sizes and shapes. Furthermore, problems such as workpiece misalignment and uneven force distribution can easily occur during clamping, affecting production efficiency and machining accuracy. Therefore, it is necessary to develop a flexible, versatile fixture capable of rapid positioning and clamping to meet the machining needs of various workpiece types. Utility Model Content

[0003] The purpose of this invention is to provide a rotary pneumatic fixture for workpiece positioning and clamping. By incorporating a rotatable and vertically movable pull rod and pressure cap, vertical clamping of the workpiece is achieved. Simultaneously, the synergistic action of paired clamping blocks, springs, and limiting blocks ensures synchronous and balanced clamping of the workpiece, preventing displacement during the clamping process. The positioning blocks provide initial limiting and guidance for the workpiece, further improving positioning accuracy and processing efficiency.

[0004] The technical solution of this utility model includes: an adapter plate, a heightening block fixed on the adapter plate, a base plate mounted on the heightening block, and a pad fixed on the base plate. A rotary cylinder is provided on the base plate, the output end of which is connected to a pull rod that can rotate around its axis and move vertically up and down. A pressure cap is connected to the upper end of the pull rod. When compressed air is introduced into the rotary cylinder, the pull rod and pressure cap rotate and press down, achieving vertical clamping of the workpiece.

[0005] The pad block has pairs of clamping blocks arranged on it, connected by springs and with a limiting block between them. After the workpiece is placed in, the clamping blocks move inward under the action of the springs to clamp the workpiece, and are kept synchronously and balanced under the guidance of the limiting block to prevent the workpiece from shifting laterally. Positioning blocks can also be set on the base plate or pad block for pre-positioning the workpiece.

[0006] Preferably, the rotary cylinder is provided with a first air nozzle and a second air nozzle. By supplying air to the first air nozzle or the second air nozzle respectively, the directional rotation and up-and-down movement of the pull rod can be realized, thereby flexibly adjusting the pressing action of the pressure cap.

[0007] Preferably, the height adjustment block is used to adjust the height relationship between the base plate and the adapter plate to accommodate workpieces of different heights and sizes, thus meeting various workpiece processing requirements.

[0008] Preferably, the pad can be replaced or adjusted according to the shape and size of the workpiece, so that the clamping area of ​​the clamping block can better match the workpiece surface.

[0009] Preferably, the gland can be replaced or customized according to the surface characteristics of the workpiece, making the clamping more stable and the applicability wider.

[0010] Preferably, the position of the limiting block is adjustable to control the clamping stroke of the clamping block, thereby adapting to the requirements of workpieces of different specifications.

[0011] Preferably, the shape and position of the positioning block can be adjusted according to the shape characteristics of the workpiece, so as to achieve rapid and accurate initial positioning when the workpiece is placed.

[0012] Preferably, the inner side of the clamping block can be designed with a corresponding contour or padded according to the shape of the workpiece to reduce workpiece damage and improve clamping stability.

[0013] Preferably, mounting holes or positioning pin holes are reserved on the adapter plate, extension block and base plate to facilitate quick installation and disassembly in automated production lines.

[0014] Preferably, the adaptability of the fixture to various types of workpieces can be further improved by changing the length of the pull rod, the shape of the pressure cap, the number and distribution of the clamping blocks, and the specifications of the pad blocks.

[0015] By combining the above-mentioned preferred features, the rotary pneumatic fixture of this invention can be flexibly adjusted according to actual production needs, thereby significantly improving processing accuracy, efficiency and adaptability.

[0016] The beneficial effects of this utility model are as follows:

[0017] 1. Vertical clamping of the workpiece is achieved by driving the pull rod and pressure cap with a rotary cylinder. The clamping force and position can be flexibly controlled according to the air supply direction, thereby improving the processing accuracy.

[0018] 2. By using a combination of paired clamping blocks, springs, and limiting blocks, the workpiece is kept in a synchronous and balanced lateral clamping state during the clamping process, avoiding deviation and improving stability.

[0019] 3. The heightening blocks, pads, pressure caps, and clamping blocks are replaceable or adjustable, allowing for flexible adjustment of the fixture structure according to the size and shape of the workpiece, thus enhancing its versatility and applicability.

[0020] 4. The positioning block provides initial guidance and positioning for the workpiece, reducing workpiece alignment time and improving production efficiency and positioning accuracy.

[0021] 5. Pre-drilled mounting holes or positioning pin holes on the adapter plate, extension block, and base plate enable quick installation and disassembly of the fixture in the automated production line, thereby improving the overall flexible production capability. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a right view of the overall structure of this utility model;

[0025] Figure 3 This is a schematic diagram of the cross-sectional structure of this utility model along direction A;

[0026] Figure 4 This is a partial structural cross-sectional view of the present invention;

[0027] Figure 5 This is a partial structural schematic diagram of the present invention;

[0028] Figure 6 This is a schematic diagram of the card block structure of this utility model;

[0029] Figure 7 This is a front view of the card block structure of this utility model;

[0030] Figure 8 This is a cross-sectional schematic diagram of the overall structure of this utility model;

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Adapter plate; 2. Heightening block; 3. Base plate; 4. Rotary cylinder; 41. First air nozzle; 42. Second air nozzle; 5. Pad block; 6. Positioning block; 7. Clamping block; 8. Spring; 9. Pressure cap; 10. Pull rod; 11. Product to be polished; 12. Limiting block. Detailed Implementation

[0033] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0034] like Figure 1 and Figure 8As shown, the rotary pneumatic fixture for workpiece positioning and clamping of this utility model includes a transition plate 1, a lifting block 2 fixed on the transition plate 1, a base plate 3 mounted on the lifting block 2, and a pad block 5 fixed on the base plate 3. A rotary cylinder 4 is provided on the base plate 3. The output end of the rotary cylinder 4 is connected to a pull rod 10 that can rotate around the axis and move up and down in the vertical direction. A pressure cap 9 is connected to the upper end of the pull rod 10. A pair of clamping blocks 7 are provided on the pad block 5. The two clamping blocks 7 are connected by a spring 8 and a limiting block 12 is provided between the clamping blocks 7. When the workpiece 11 is placed, the clamping blocks 7 clamp the workpiece 11 inward under the action of the spring 8, and achieve synchronous and balanced clamping under the guidance of the limiting block 12. A positioning block 6 is provided on the base plate 3 or the pad block 5 for pre-positioning the workpiece 11.

[0035] The rotary cylinder 4 is equipped with a first air nozzle 41 and a second air nozzle 42, which are used to apply compressed air in different directions to the pull rod 10 respectively, so as to realize the dual adjustment of the pull rod 10 rotation and up and down movement.

[0036] The height adjustment block 2 is used to adjust the installation height between the base plate 3 and the adapter plate 1 to adapt to the processing position requirements of workpieces 11 of different sizes.

[0037] The pad 5 can be replaced or its position adjusted according to the shape and size of the workpiece 11 so that the clamping area of ​​the clamping block 7 is adapted to the shape of the workpiece 11.

[0038] The pressure cap 9 is a replaceable structure. Different shapes or materials of pressure cap 9 can be selected according to the surface characteristics of the workpiece 11 to improve the adaptability and accuracy of clamping.

[0039] The limit block 12 is replaceable or its position is adjustable to control the clamping stroke of the clamping block 7, thereby adapting to the synchronous clamping requirements of workpieces 11 of different specifications.

[0040] The positioning block 6 has a positioning surface or positioning hole that adapts to the shape of the workpiece 11, thereby obtaining initial positioning and guidance when the workpiece 11 is placed in.

[0041] The positioning block 6 has a positioning surface or positioning hole that adapts to the shape of the workpiece 11, thereby obtaining initial positioning and guidance when the workpiece 11 is placed in.

[0042] The positioning block 6 has a positioning surface or positioning hole that adapts to the shape of the workpiece 11, thereby obtaining initial positioning and guidance when the workpiece 11 is placed in.

[0043] By adjusting the length of the pull rod 10, the shape of the pressure cap 9, the number and position of the locking blocks 7, and the specifications of the pad blocks 5, the fixture can be widely used for positioning and clamping various types of workpieces 11.

[0044] Example 1:

[0045] The adapter plate 1 is fixed to the production line or workbench using locating pins or bolts. The extension block 2 is installed on the adapter plate 1 to obtain a suitable height space. The base plate 3 is installed on the extension block 2, and a rotary cylinder 4 is installed on the base plate 3. The output end of the rotary cylinder 4 is connected to the pull rod 10, and the upper end of the pull rod 10 is connected to the pressure cap 9. By supplying air to the first air nozzle 41 or the second air nozzle 42, the pull rod 10 can be rotated and moved up and down in a controlled manner, and the pressure cap 9 achieves vertical pressing of the workpiece 11 under the drive of the pull rod 10.

[0046] A pad 5 is mounted on the base plate 3. A pair of clamping blocks 7 are symmetrically arranged on the pad 5, and the two clamping blocks 7 are connected by a spring 8 and a limiting block 12 is provided between them. After the workpiece 11 is placed between the clamping blocks 7, the clamping blocks 7 move inward under the action of the spring 8 and clamp the workpiece 11. The limiting block 12 ensures that the clamping process of the two clamping blocks 7 is synchronous and balanced, thereby preventing the workpiece 11 from shifting. The positioning block 6 can be mounted on the base plate 3 or the pad 5, matching the shape of the workpiece 11, providing initial positioning and guidance for the workpiece, thereby reducing the time for workpiece placement and alignment, and improving operating efficiency and positioning accuracy.

[0047] Example 2:

[0048] In actual production, for taller or larger workpieces, a heightening block 2 can be selected to adjust the installation height between the base plate 3 and the adapter plate 1, so that the downward stroke of the pressure cap 9 can adapt to the size requirements of the workpiece 11. By adjusting the height of the heightening block 2, the fixture can be adapted to different types of workpieces, thus eliminating the need to replace the entire fixture set.

[0049] Example 3:

[0050] When the surface of the workpiece 11 is delicate or easily damaged, a flexible pad can be added to the bottom of the pressure cover 9, or a pressure cover 9 with a corresponding curved surface can be customized according to the surface characteristics of the workpiece 11. At the same time, a rubber, polyurethane or other flexible material pad can be added to the inner side of the clamping block 7, so as to provide a softer and more compliant contact for the workpiece 11 during the clamping process and reduce surface scratches or damage.

[0051] Example 4:

[0052] To accommodate workpieces 11 of various shapes, the position distribution of the clamping blocks 7 can be altered by pre-drilling multiple mounting holes in the pad blocks 5, allowing the clamping area of ​​the clamping blocks 7 to more precisely match the contour of the workpiece 11. Alternatively, clamping blocks 7 of different sizes or shapes can be replaced to adapt to the positioning and clamping requirements of various non-standard shaped workpieces.

[0053] Example 5:

[0054] To improve production flexibility and changeover efficiency on automated production lines, mounting holes or positioning pin holes can be pre-drilled on the adapter plate 1, the heightening block 2, and the base plate 3. When production tasks change, suitable clamping blocks 7, pressure caps 9, and pad blocks 5 can be quickly disassembled or replaced, enabling rapid production transfer and flexible application of the fixture between different processes or different workpieces.

[0055] The above embodiments and preferred features not only improve the adaptability and versatility of the fixture to workpieces of different shapes and sizes, but also simplify the installation, disassembly and debugging process of the fixture on the production line, significantly improving production efficiency and processing quality.

[0056] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A rotary pneumatic fixture for workpiece positioning and clamping, comprising an adapter plate (1), a lifting block (2) fixed on the adapter plate (1), a base plate (3) mounted on the lifting block (2), and a pad (5) fixed on the base plate (3), characterized in that: The base plate (3) is provided with a rotary cylinder (4), the output end of which is connected to a pull rod (10) that can rotate around the axis and move up and down in the vertical direction. The upper end of the pull rod (10) is connected to a pressure cap (9). The pad (5) is provided with a pair of clamping blocks (7), which are connected by a spring (8) and a limiting block (12) is provided between the clamping blocks (7). When the workpiece (11) is inserted, the clamping blocks (7) clamp the workpiece (11) inward under the action of the spring (8) and achieve synchronous and balanced clamping under the guidance of the limiting block (12). The base plate (3) or the pad (5) is provided with a positioning block (6) for pre-positioning the workpiece (11).

2. The rotary pneumatic fixture according to claim 1, characterized in that: The rotary cylinder (4) is provided with a first air nozzle (41) and a second air nozzle (42) for applying compressed air in different directions to the pull rod (10) respectively, so as to realize the dual adjustment of the pull rod (10) rotation and up and down movement.

3. The rotary pneumatic fixture according to claim 1 or 2, characterized in that: The heightening block (2) is used to adjust the installation height between the base plate (3) and the adapter plate (1) to adapt to the processing position requirements of workpieces (11) of different sizes.

4. The rotary pneumatic fixture according to any one of claims 1 to 3, characterized in that: The pad (5) can be replaced or its position adjusted according to the shape and size of the workpiece (11) so that the clamping area of ​​the clamping block (7) matches the shape of the workpiece (11).

5. The rotary pneumatic fixture according to any one of claims 1 to 4, characterized in that: The pressure cap (9) is a replaceable structure. Different shapes or materials of pressure caps (9) can be selected according to the surface characteristics of the workpiece (11) to improve the adaptability and accuracy of the clamping.

6. The rotary pneumatic fixture according to any one of claims 1 to 5, characterized in that: The limiting block (12) is replaceable or its position is adjustable to control the clamping stroke of the clamping block (7), thereby adapting to the synchronous clamping requirements of workpieces (11) of different specifications.

7. The rotary pneumatic fixture according to any one of claims 1 to 6, characterized in that: The positioning block (6) has a positioning surface or positioning hole adapted to the shape of the workpiece (11), thereby obtaining initial positioning and guidance when the workpiece (11) is placed in.

8. The rotary pneumatic fixture according to any one of claims 1 to 6, characterized in that: The positioning block (6) has a positioning surface or positioning hole adapted to the shape of the workpiece (11), thereby obtaining initial positioning and guidance when the workpiece (11) is placed in.

9. The rotary pneumatic fixture according to any one of claims 1 to 6, characterized in that: The positioning block (6) has a positioning surface or positioning hole adapted to the shape of the workpiece (11), thereby obtaining initial positioning and guidance when the workpiece (11) is placed in.

10. The rotary pneumatic fixture according to any one of claims 1 to 9, characterized in that: By adjusting the length of the pull rod (10), the shape of the pressure cap (9), the number and position of the clamping blocks (7), and the specifications of the pads (5), the fixture can be widely used for positioning and clamping of various types of workpieces (11).

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