Tool clamp for special-shaped nut and clamping and positioning method

Abstract

The invention relates to the technical field of special-shaped nut machining, and discloses a special-shaped nut tool clamp which comprises a flange plate and four clamping jaws moving in the radial direction of the flange plate, the four clamping jaws are evenly distributed on the flange plate, and the special-shaped nut tool clamp is characterized in that floating plates moving in the radial direction of the flange plate are arranged at the tops of the clamping jaws; the end, away from the disc center, of the floating plate is provided with an elastic device enabling the floating plate to move towards the disc center to conduct floating positioning on a machined part, the end, close to the disc center, of the floating plate is provided with a limiting block limiting the floating plate to move towards the disc center, and the limiting block is fixedly arranged on the clamping jaw. According to the floating clamp, the product clamping position is firstly subjected to floating correction through floating clamping, then clamping is completed, the problem that a product blank cannot be positioned or is not accurately positioned through a fluctuation clamp is solved, the product quality is improved, and the stability of the machining process and the machining efficiency are improved.

Description

Technical Field

[0001] This invention relates to the field of non-standard nut processing technology, specifically to a tooling fixture and clamping and positioning method for non-standard nuts. Background Technology

[0002] The functions and importance of tooling fixtures are as follows: 1. Tooling fixtures are devices used to fix workpieces during machining and assembly processes; 2. Their core function is to ensure that the workpiece is in the correct position, thereby guaranteeing machining accuracy and assembly quality; 3. This device can significantly improve production efficiency; 4. It can also ensure the consistency of product quality; 5. Currently, it is widely used in various manufacturing fields.

[0003] In the process of processing irregularly shaped products, especially irregularly shaped nuts, due to the dimensional fluctuations of the irregularly shaped surfaces of different blanks in the same batch or different batches of products, the existing fixed fixture positioning surfaces cannot completely match the irregularly shaped surfaces of the products. This creates a positional difference between the unprocessed area and the processed area of ​​the irregularly shaped surface, resulting in products that cannot be produced or that are defective and cannot meet the final product requirements. Summary of the Invention

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a tooling fixture for irregularly shaped nuts. Technical solution

[0005] To achieve the above objectives, the present invention provides the following technical solution: A tooling fixture for a non-standard nut includes a flange and four jaws that move radially along the flange. The four jaws are evenly distributed on the flange. Each jaw has a floating plate that moves radially along the flange at its top. The floating plate has a spring-loaded device on its side away from the flange center to move the floating plate toward the flange center for floating positioning of the workpiece. The floating plate has a limiting block on its side near the flange center to restrict the movement of the floating plate toward the flange center. The limiting block is fixed on the jaw.

[0006] Furthermore, the elastic device includes a spring and a spring cover plate, the spring being disposed in the receiving cavity at the outer end of the floating plate, and the spring cover plate being disposed on the outside of the claw.

[0007] Furthermore, the spring cover is fixed to the outside of the chuck with bolts.

[0008] Furthermore, the bottom of the floating plate is provided with a protrusion that matches the limiting block.

[0009] Furthermore, the top surface of the claw is provided with a groove, and the limiting block is disposed in the groove.

[0010] Furthermore, the limiting block is detachably mounted on the claw.

[0011] Furthermore, the claws are L-shaped so that the bottom is a cavity when the four claws are closed.

[0012] The clamping and positioning method of the aforementioned fixture for irregularly shaped nuts includes the following steps: 1) The four jaws open, and the four limit blocks drive the four floating plates to open at equal intervals. At this time, the opening range of the jaws is greater than the opening range of the floating plates. After the jaws and floating plates are opened, their dimensions are both greater than the product dimensions, so that the product can be placed into the fixture. 2) The four jaws begin to close, and the four springs drive the four floating plates to close together. During the closing process, the floating plates first contact the irregular surface of the product, and the four floating plates begin to be compressed and retract. Due to the spring floating support, the product begins to be automatically positioned and corrected. 3) The four jaws continue to close. At this time, the floating plate has completed the floating positioning, and the jaws begin to clamp the product rod structure, completing the entire product clamping and positioning process. 4) After processing, the chuck opens to remove the product, completing the product clamping and positioning process.

[0013] (III) Beneficial Effects Compared with the prior art, the present invention has the following beneficial effects: By first adjusting the product's clamping position using a floating clamping method, and then clamping it, the problem of the product blank fluctuating and the fixture being unable to position or being inaccurately positioned is solved, thus improving product quality and increasing the stability and efficiency of the processing. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the exploded structure of the present invention.

[0015] Figure 2 This is a schematic diagram of the structure of the present invention.

[0016] Figure 3 This is a schematic diagram of the claw opening structure of the present invention.

[0017] Figure 4 This is a schematic diagram of the floating positioning state structure of the present invention.

[0018] Figure 5 This is a schematic diagram of the clamping and positioning state of the present invention.

[0019] Figure 6 This is a schematic diagram of the workpiece in the completed processing state according to the present invention.

[0020] In the diagram: 1- Bolt 2- Spring cover 3- Spring 4- Floating plate 5- Limiting block 6- Claw 7- Screw 8- Flange 9- Irregular nut. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative effort are all within the scope of protection of the present invention.

[0022] Reference Figure 1-2 A tooling fixture for a non-standard nut includes a flange 8 and four claws 6 that move radially along the flange. The four claws 6 are evenly distributed on the flange 8. Each claw 6 has a floating plate 4 on its top that moves radially along the flange. The end of the floating plate 4 away from the flange center has a spring-loaded device that moves the floating plate towards the flange center to float and position the workpiece. The end of the floating plate 4 near the flange center has a limiting block 5 that restricts the movement of the floating plate towards the flange center. The limiting block 5 is fixed to the claw 4. The spring-loaded device includes a spring 3 and a spring cover plate 2. The spring 3 is located in a receiving cavity at the outer end of the floating plate 6, and the spring cover plate 2 is located on the outside of the claw 6. The spring cover plate 2 is fixed to the outside of the claw 6 with bolts 1. The bottom of the floating plate 4 has a protrusion that matches the limiting block. The top surface of the claw 6 has a groove, and the limiting block 5 is located in the groove. The limiting block 5 is detachably connected to the claw 6 with screws 7. The claws 6 are L-shaped so that the bottom is a cavity when the four claws are closed.

[0023] The clamping and positioning method of the aforementioned fixture for irregularly shaped nuts includes the following steps: 1) The four jaws open, and the four limit blocks drive the four floating plates to open at equal intervals. At this time, the opening range of the jaws is greater than the opening range of the floating plates. After the jaws and floating plates are opened, their dimensions are both greater than the product dimensions, so that the product can be placed into the fixture. 2) The four jaws begin to close, and the four springs drive the four floating plates to close together. During the closing process, the floating plates first contact the irregular surface of the product, and the four floating plates begin to be compressed and retract. Due to the spring floating support, the product begins to be automatically positioned and corrected. 3) The four jaws continue to close. At this time, the floating plate has completed the floating positioning, and the jaws begin to clamp the product rod structure, completing the entire product clamping and positioning process. 4) After processing, the chuck opens to remove the product, completing the product clamping and positioning process.

[0024] The structural diagrams of the aforementioned four steps are as follows: Figure 3-6 As shown.

[0025] By first adjusting the product's clamping position using a floating clamping method, and then clamping it, the problem of product blank fluctuations and the inability of the clamping fixture to be positioned or to be positioned inaccurately is solved, thereby improving product quality and increasing the stability and efficiency of the processing process.

[0026] It should be noted that the term "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tooling fixture for irregularly shaped nuts, comprising a flange and four jaws that move radially along the flange, the four jaws being evenly distributed on the flange, characterized in that: Each of the jaws is provided with a floating plate that moves radially along the flange. The end of the floating plate away from the center of the flange is provided with an elastic device that moves the floating plate toward the center of the flange to float and position the workpiece. The end of the floating plate near the center of the flange is provided with a limiting block that restricts the movement of the floating plate toward the center of the flange. The limiting block is fixed on the jaw.

2. The tooling fixture for irregularly shaped nuts according to claim 1, characterized in that: The elastic device includes a spring and a spring cover plate. The spring is located in the receiving cavity at the outer end of the floating plate, and the spring cover plate is located on the outside of the claw.

3. The tooling fixture for irregularly shaped nuts according to claim 2, characterized in that: The spring cover is fixed to the outside of the chuck with bolts.

4. The tooling fixture for irregularly shaped nuts according to claim 1, characterized in that: The bottom of the floating plate is provided with a protrusion that matches the limiting block.

5. The tooling fixture for irregularly shaped nuts according to claim 1, characterized in that: The top surface of the claw is provided with a groove, and the limiting block is located in the groove.

6. The tooling fixture for irregularly shaped nuts according to claim 1, characterized in that: The limiting block is detachably mounted on the chuck.

7. The tooling fixture for irregularly shaped nuts according to claim 1, characterized in that: The jaws are L-shaped so that the bottom is a cavity when the four jaws are closed.

8. The clamping and positioning method of the tooling fixture for the irregular nut as described in claims 1-7, characterized in that: Includes the following steps: 1) The four jaws open, and the four limit blocks drive the four floating plates to open at equal intervals. At this time, the opening range of the jaws is greater than the opening range of the floating plates. After the jaws and floating plates are opened, their dimensions are both greater than the product dimensions, so that the product can be placed into the fixture. 2) The four jaws begin to close, and the four springs drive the four floating plates to close together. During the closing process, the floating plates first contact the irregular surface of the product, and the four floating plates begin to be compressed and retract. Due to the spring floating support, the product begins to be automatically positioned and corrected. 3) The four jaws continue to close. At this time, the floating plate has completed the floating positioning, and the jaws begin to clamp the product rod structure, completing the entire product clamping and positioning process. 4) After processing, the chuck opens to remove the product, completing the product clamping and positioning process.

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