Positioning and clamping tool for workpiece with C-shaped section

Abstract

The utility model discloses a positioning and clamping tool for a workpiece with a C-shaped section. The positioning and clamping tool comprises a tool base, a surface positioning assembly, a pin positioning assembly, a clamping assembly and a clamping assembly, wherein the surface positioning assembly is arranged on the tool base and used for preliminarily positioning the workpiece; the pin positioning assembly is arranged on the tool base and used for accurately positioning the workpiece; according to the positioning and clamping tool for the workpiece with the C-shaped section, placement of the workpiece is completed through initial positioning of the guide block on the supporting block, then clamping of the workpiece is completed through the face positioning assembly, the positioning and clamping tool adapts to different types of workpieces, meanwhile, it can be guaranteed that initial clamping and initial positioning of the workpiece are completed, and then accurate positioning of the workpiece is completed through the pin positioning assembly; accurate positioning of the workpiece is completed through multiple positioning modes, so that the workpiece is clamped more accurately, and the subsequent machining precision is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to technical fields, concretely relates to a C type section workpiece positioning clamping tool. BACKGROUND

[0002] In the field of existing automatic guided vehicle (AGV) forklifts, the stacker fork truck, as a common logistics equipment, usually adopts a C-shaped cross-section structure for the design of its forks, and an opening for viewing the rollers is provided on the top surface. The two sides of the fork are usually provided with shaft holes for mounting the bearing wheels or separately provided with positioning holes. The fork and the frame are fixed by welding to effectively support the goods during stacking operations.

[0003] During the processing of the fork, the fork usually needs to be clamped and positioned to ensure the accuracy of subsequent processing. Generally, the workpiece is placed on the welding tool by hoisting, and clamping and positioning are performed by electric control. The existing welding tool usually adopts point positioning to clamp the workpiece, ensuring that the workpiece does not move during processing, thereby improving the processing accuracy. However, the current workpiece clamping and positioning technology still has certain problems, especially during workpiece loading and positioning. Specifically, when the workpiece is placed on the welding tool, the workpiece is usually in a free state, which makes it difficult to accurately align the clamping position during loading. Although the traditional point positioning method can ensure a certain clamping accuracy, the workpiece position is unstable during workpiece feeding, which can easily lead to inaccurate positioning and even workpiece deflection. This deflection can affect the accuracy of subsequent welding operations, causing assembly errors and possibly reducing production efficiency. In addition, the positioning method of the existing welding tool does not fully consider the dynamic changes of the workpiece during loading, and cannot effectively respond to complex situations that the workpiece may encounter in the actual production environment. SUMMARY

[0004] The utility model aims at providing a C type section workpiece positioning clamping tool to solve the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a C type section workpiece positioning clamping tool, comprising:

[0006] a tool base;

[0007] a surface positioning assembly arranged on the tool base and used for preliminarily positioning the workpiece;

[0008] a pin positioning assembly arranged on the tool base and used for accurately positioning the workpiece;

[0009] a clamping assembly arranged on the tool base and used for clamping the workpiece.

[0010] Preferably, the surface positioning assembly comprises a first corner seat arranged on the tool base;

[0011] A surface positioning cylinder is mounted on the first corner seat;

[0012] A first surface positioning block is in driving connection with the output shaft of the surface positioning cylinder;

[0013] A second corner seat is arranged on the tool base;

[0014] A second surface positioning block is detachably connected to the second corner seat.

[0015] Preferably, the first surface positioning block and the second surface positioning block are arranged in parallel, and in operation, the first surface positioning block is inserted into the groove of the workpiece, or the part on the workpiece is located between the first surface positioning block and the second surface positioning block.

[0016] Preferably, the surface positioning cylinder is used to drive the first surface positioning block to move, so that the first surface positioning block contacts with the groove wall or the reinforcing rib of the workpiece, and pushes the workpiece to the position where the second surface positioning block contacts, thereby completing the preliminary positioning of the workpiece.

[0017] Preferably, the pin positioning assembly comprises:

[0018] A support seat is arranged on the tool base;

[0019] An adjusting cylinder is mounted on the support seat;

[0020] A sliding seat is in driving connection with the output shaft of the adjusting cylinder and slides in the vertical direction;

[0021] A pin cylinder is arranged on the sliding seat;

[0022] A positioning pin is in driving connection with the output end of the pin cylinder.

[0023] Preferably, the adjusting cylinder adjusts the height of the sliding seat according to the height of the positioning hole of the workpiece, so that the positioning pin is in butt joint with the positioning hole on the workpiece.

[0024] Preferably, after the surface positioning assembly clamps the workpiece in place, the positioning pin is in butt joint with the positioning hole on the workpiece.

[0025] Preferably, the clamping assembly comprises a clamping cylinder, a clamping block and a clamping seat, and the clamping cylinder is used to drive the clamping block to contact with the workpiece, thereby realizing the clamping of the workpiece.

[0026] According to the above technical solution, the utility model has the following beneficial effects:

[0027] The C-shaped cross-section workpiece positioning and clamping tool places the workpiece through the initial positioning of the guide block on the support block, and then clamps the workpiece through the surface positioning assembly, and is suitable for different types of workpieces, and can ensure that the workpiece is initially clamped and positioned, and then the workpiece is accurately positioned through the pin positioning assembly, so that the workpiece is accurately clamped, and the machining precision is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a whole structure schematic view of the utility model;

[0029] Figure 2 It is a part structure schematic view of the utility model.

[0030] In the figure: 1, tool base; 2, surface positioning assembly; 3, pin positioning assembly; 4, clamping assembly; 201, first corner seat; 202, surface positioning cylinder; 203, first surface positioning block; 204, second corner seat; 205, second surface positioning block; 301, support seat; 302, adjusting cylinder; 303, sliding seat; 304, bolt cylinder; 305, positioning pin; 401, support block; 402, pressing block; 403, mounting frame; 404, pressing cylinder. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0032] As shown in Figure 1 and Figure 2 A C-shaped cross-section workpiece positioning and clamping tool, comprising a tool base 1; a surface positioning assembly 2 arranged on the tool base 1 and used for initially positioning a workpiece; a pin positioning assembly 3 arranged on the tool base 1 and used for accurately positioning the workpiece; and a clamping assembly 4 arranged on the tool base 1 and used for clamping the workpiece.

[0033] The tooling base is provided with a plurality of positioning assemblies, wherein the surface positioning assembly 2 is used for preliminary positioning of the workpiece, and the surface positioning block is in contact with the workpiece to ensure that the workpiece is in a preliminarily correct position; the pin positioning assembly 3 further precisely positions the workpiece, and the positioning pin is in butt joint with the positioning hole on the workpiece to achieve precise positioning; and the clamping assembly 4 is driven by the clamping cylinder to drive the clamping block to be in contact with the workpiece, so as to ensure the fixation and stability of the workpiece in the machining process. The tooling has simple structure and high efficiency, and can effectively solve the problems of inaccuracy and instability in the traditional positioning and clamping process of the C-shaped cross-section workpiece. The surface positioning, pin positioning and clamping functions are clearly divided, which can ensure the accuracy and safety of the workpiece in the entire machining process, and are especially suitable for high efficiency and high precision requirements in mass production.

[0034] The surface positioning assembly comprises a first corner seat 201 provided on the tooling base 1, a surface positioning cylinder 202 installed on the first corner seat 201, a first surface positioning block 203 in transmission connection with an output shaft of the surface positioning cylinder 202, a second corner seat 204 provided on the tooling base 1, and a second surface positioning block 205 detachably connected to the second corner seat 204. The surface positioning assembly 2 drives the first surface positioning block 203 through the surface positioning cylinder 202, the first surface positioning block 203 is in contact with the groove or other part of the workpiece, the workpiece is in butt joint with the second surface positioning block 205, so as to realize preliminary positioning of the workpiece. The second surface positioning block 205 is detachably connected to the tooling base, which is convenient for disassembly and adjustment. The surface positioning assembly realizes precise positioning of the workpiece through the driving of the cylinder, and has good adaptability in structure, and can be adjusted and adapted according to the different shapes of the workpiece. This design has high positioning accuracy, and can complete the preliminary positioning of the workpiece in a short time, thereby improving the production efficiency.

[0035] The structure that the first surface positioning block 203 and the second surface positioning block 205 are arranged in parallel, and the working mode. In working, the first surface positioning block 203 is inserted into the groove of the workpiece, or the specific part of the workpiece is located between the first surface positioning block 203 and the second surface positioning block 205, so as to ensure the accurate positioning of the workpiece. This design enables the workpiece to be stably fixed in the surface positioning assembly, and provides the accuracy of preliminary positioning. This design ensures the stability and accuracy of the workpiece in the positioning process, and avoids the error caused by the non-parallel surface positioning block in the traditional positioning process. Through the parallel arrangement of the positioning block, the deviation caused by the shape difference of the workpiece can be effectively avoided, and the reliability of positioning is improved.

[0036] The surface positioning cylinder 202 drives the first surface positioning block 203 to move, causing it to contact the groove wall or reinforcing rib of the workpiece and push the workpiece to the position where it contacts the second surface positioning block 205, thus completing the initial positioning of the workpiece. The surface positioning cylinder 202 drives the first surface positioning block 203 to move, causing it to contact the groove wall or reinforcing rib of the workpiece and push the workpiece to the position where it contacts the second surface positioning block 205, thereby achieving the initial positioning of the workpiece. Through the driving of the surface positioning cylinder 202, it is ensured that the first surface positioning block 203 accurately contacts the groove wall or reinforcing rib of the workpiece, thus achieving efficient initial positioning of the workpiece. This design reduces manual intervention, improves production efficiency, and guarantees positioning accuracy.

[0037] The pin positioning assembly 3 includes a support base 301 mounted on the tooling base 1, an adjusting cylinder 302 mounted on the support base 301, a sliding seat 303 connected to the output shaft of the adjusting cylinder 302 and sliding vertically, and a pin-inserting cylinder 304 mounted on the sliding seat 303. A positioning pin 305 is connected to the output end of the pin-inserting cylinder 304. The pin positioning assembly 3 adjusts the position of the sliding seat 303 by adjusting the adjusting cylinder 302, so that the positioning pin 305 aligns with the positioning hole on the workpiece, achieving precise positioning. The pin-inserting cylinder 304 further ensures that the positioning pin 305 can be smoothly inserted into the positioning hole, thereby locking the workpiece. The pin positioning assembly 3 provides high-precision positioning during workpiece positioning, and is particularly suitable for workpieces requiring precise alignment. The adjusting cylinder 302 makes the assembly highly adaptable, automatically adjusting according to the height of the positioning hole of different workpieces, simplifying the operation process.

[0038] The adjusting cylinder 302 adjusts the height of the sliding seat 303 according to the height of the workpiece positioning hole, so that the positioning pin 305 aligns with the positioning hole on the workpiece. The adjusting cylinder 302 further adjusts the height of the sliding seat 303 according to the height of the workpiece positioning hole, ensuring precise alignment between the positioning pin 305 and the positioning hole on the workpiece. In this way, the pin positioning assembly can adapt to the positioning requirements of different workpieces. This design gives the pin positioning assembly 3 greater flexibility and adaptability, enabling automatic adjustment for positioning holes of different heights, avoiding errors caused by manual operation, and improving positioning accuracy.

[0039] When the workpiece is clamped in place by the surface positioning assembly 2, the positioning pin 305 is in contact with the positioning hole on the workpiece. After the surface positioning assembly 2 completes the preliminary positioning of the workpiece, the pin positioning assembly 3 adjusts the position of the positioning pin 305 through the adjusting cylinder 302 to accurately align with the positioning hole of the workpiece, completing the precise positioning of the workpiece. This scheme ensures the stability and accuracy of the workpiece in each positioning link by coordinating the work of the surface positioning assembly 2 and the pin positioning assembly 3. This double guarantee of precise positioning can significantly improve the precision of workpiece machining and avoid positioning deviation during machining.

[0040] The clamping assembly 4 includes a clamping cylinder, a clamping block, and a clamping seat. The clamping cylinder is used to drive the clamping block into contact with the workpiece, thereby achieving clamping of the workpiece. The clamping cylinder drives the clamping block into contact with the workpiece, thereby achieving clamping of the workpiece. The clamping seat provides stable support to ensure that the clamping block does not shift during clamping. This structure can adjust the clamping force according to the different shapes and sizes of the workpiece, ensuring that the workpiece is firmly fixed during machining. This compact clamping assembly 4 can quickly and stably complete the clamping action, effectively ensuring the stability of the workpiece during machining. Driven by a cylinder, it is easy to operate and responds quickly, improving production efficiency and machining accuracy.

[0041] The surface positioning assembly 2 includes a first corner seat 201, a surface positioning cylinder 202, a first surface positioning block 203, a second corner seat 204, and a second surface positioning block 205. The first and second surface positioning blocks 203 and 205 are arranged in parallel, and the first and second corner seats 201 and 204 are arranged on the tooling base 1. The surface positioning cylinder 202 is installed on the first corner seat 201, and the first surface positioning block 203 is in transmission connection with the output shaft of the surface positioning cylinder 202. The second surface positioning block 205 is detachably connected to the second corner seat 204. During operation, the first surface positioning block 203 is inserted into the groove of the workpiece or the existing part of the workpiece is located between the first and second surface positioning blocks 203 and 205. During preliminary positioning, the surface positioning cylinder 202 is driven to drive the first surface positioning block 203 to move, so that the first surface positioning block 203 abuts against the groove wall or the reinforcing rib of the workpiece. At this time, the workpiece is pushed to slide until the other side of the workpiece abuts against the second surface positioning block. At this time, the preliminary positioning of the workpiece is completed. Since it is a surface contact, the workpiece can be more stable in a single direction after initial positioning, and the problem of sliding is difficult to occur. The second surface positioning block 205 can be replaced to complete the positioning of different specifications of workpieces with different thicknesses.

[0042] The pin positioning assembly 3 comprises a supporting seat 301 arranged on the tool base 1, an adjusting cylinder 302, a sliding seat 303, a pin cylinder 304 and a positioning pin 305, the supporting seat 301 is arranged on the tool base 1, the adjusting seat is slidably connected to the supporting seat 301 in the vertical direction, the adjusting seat is in transmission connection with the output shaft of the adjusting cylinder 302, the pin cylinder 304 is arranged on the sliding seat 303, the positioning pin 305 is in transmission connection with the output end of the pin cylinder 304, in working, the adjusting cylinder 302 adjusts the height of the sliding seat 303 according to the height of the positioning hole of the workpiece, so that the positioning pin 305 on the sliding seat 303 is consistent with the height of the positioning hole when the workpiece is placed, when the face positioning assembly 2 clamps the workpiece in place, at this time, the positioning pin 305 is opposite to the positioning hole on the workpiece, the pin cylinder 304 is driven, the pin cylinder 304 drives the positioning pin 305 to insert into the positioning hole of the workpiece, so that the positioning of the workpiece is completed, the pin cylinder 304 and the positioning pin 305 are provided with two groups, the axes of the two groups of positioning pins 305 are arranged in parallel, through double positioning, the position of the workpiece in the vertical and horizontal directions can be completed.

[0043] The clamping assembly 4 comprises a supporting block 401, a pressing block 402, a mounting frame 403 and a pressing cylinder 404, the supporting block 401 is mounted on the top surface of the mounting frame 403, the pressing cylinder 404 is arranged on the mounting frame 403, the pressing block 402 is rotatably connected to the mounting frame 403, the output shaft of the pressing cylinder 404 is in transmission connection with the pressing block 402, the supporting block 401 is provided with a guide block embedded with the groove on the workpiece, in working, the workpiece is placed on the supporting block 401, due to the guide block on the supporting block 401, the approximate position of the workpiece is determined, which is convenient for the preliminary positioning of the workpiece by the face positioning assembly 2, when the workpiece is positioned, the clamping cylinder drives the clamping block to be close to the supporting block 401, and the clamping of the workpiece is completed.

[0044] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A C-section workpiece positioning and clamping fixture, characterized by, include: Tooling base (1); A surface positioning component (2) is disposed on the tooling base (1) for preliminary positioning of the workpiece; The pin positioning component (3) is set on the tooling base (1) for precise positioning of the workpiece; A clamping assembly (4) is disposed on the tooling base (1) for clamping the workpiece.

2. The positioning and clamping tool for a C-shaped cross-section workpiece according to claim 1, characterized in that: The surface positioning component (2) includes: a first corner seat (201) disposed on the tooling base (1); A face positioning cylinder (202) is installed on the first corner seat (201); The first surface positioning block (203) is connected to the output shaft of the surface positioning cylinder (202) via a transmission connection. The second corner bracket (204) is disposed on the tooling base (1); The second positioning block (205) is detachably connected to the second corner bracket (204).

3. The C-section workpiece positioning and clamping fixture of claim 2, wherein: The first surface positioning block (203) and the second surface positioning block (205) are arranged in parallel. During operation, the first surface positioning block (203) is inserted into the groove of the workpiece, or a part of the workpiece is located between the first surface positioning block (203) and the second surface positioning block (205).

4. The C-section workpiece positioning and clamping fixture of claim 2, wherein: The surface positioning cylinder (202) is used to drive the first surface positioning block (203) to move, so that the first surface positioning block (203) contacts the groove wall or reinforcing rib of the workpiece, and pushes the workpiece to the position where the second surface positioning block (205) contacts, thereby completing the initial positioning of the workpiece.

5. The C-section workpiece positioning and clamping fixture of claim 1, wherein: The pin positioning component (3) includes: A support base (301) is disposed on the tooling base (1); An adjusting cylinder (302) is mounted on the support base (301); The sliding seat (303) is connected to the output shaft of the adjusting cylinder (302) and slides in the vertical direction; A pin cylinder (304) is mounted on the sliding seat (303); The positioning pin (305) is connected to the output end of the pin cylinder (304) for transmission.

6. A C-section workpiece positioning and clamping fixture according to claim 5, wherein: The adjusting cylinder (302) adjusts the height of the sliding seat (303) according to the height of the workpiece positioning hole, so that the positioning pin (305) aligns with the positioning hole on the workpiece.

7. The C-section workpiece positioning and clamping fixture of claim 5, wherein: After the surface positioning component (2) clamps the workpiece into place, the positioning pin (305) engages with the positioning hole on the workpiece.

8. The C-section workpiece positioning and clamping fixture of claim 1, wherein: The clamping assembly (4) includes a clamping cylinder, a clamping block, and a clamping seat. The clamping cylinder is used to drive the clamping block to contact the workpiece, thereby achieving clamping of the workpiece.

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