Destressing anti-deformation heat treatment tool clamp for special-shaped plain film

Abstract

The destressing and deformation-preventing heat treatment tool clamp comprises a base plate, a boss, positioning rods, supporting rods, a top cover and fastening nuts, the boss is fixed to the upper plane of the base plate, the positioning rods are arranged on the edge of the boss and connected with the base plate, the supporting rods are arranged at the four corners of the base plate, and the top cover is connected with the top cover. The top cover is provided with through holes corresponding to the positioning rods and the supporting rods, and the fastening nuts are matched with the supporting rods to fasten the top cover. Wherein the shape of the boss is the same as that of the special-shaped flat sheet, and the size of the boss is smaller than that of the base plate. According to the stress-relieving and deformation-preventing heat treatment tool clamp for the special-shaped flat sheet, the special-shaped flat sheet is positioned in cooperation with the bosses and the positioning rods, the supporting rods are used on the periphery to be matched with the top cover for fixing and tightening, the problem that warping flatness is out of tolerance and deformation is caused is effectively solved, and the tool clamp is easy to fix when placed in a furnace and is convenient to use. Staff operation is facilitated, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of heat treatment, in particular to a heat treatment fixture for relieving stress and preventing deformation of special-shaped flat sheets. Background Art

[0002] Metal heat treatment is a key process in mechanical manufacturing. Compared to other machining processes, heat treatment generally does not alter the workpiece's shape or overall chemical composition. Instead, it modifies the workpiece's internal microstructure or surface chemical composition to enhance or improve its performance. Its hallmark is improving the workpiece's intrinsic quality, which is generally not visible to the naked eye. To ensure that metal workpieces possess the desired mechanical, physical, and chemical properties, heat treatment is often essential, in addition to the appropriate selection of materials and various forming techniques.

[0003] However, as the heat treatment process proceeds, the workpiece will experience varying degrees of deformation. In actual production, heat treatment deformation adds many difficulties to subsequent processes, especially mechanical processing, affecting production efficiency. Excessive deformation leads to scrapping and increased costs. Especially for special-shaped flat workpieces that need to be quenched, the combined effects of thermal stress and structural stress often cause the deformation to exceed the requirements of the customer's drawings, causing great difficulties for subsequent processing and production.

[0004] Deformation is a difficult issue to address during heat treatment. It's impossible to completely eliminate deformation, so deformation is generally controlled within a certain range. Trapezoidal flat sheet products, due to their shape, are difficult to secure during furnace placement and are often inserted or placed squarely. Because they are formed by stamping or extrusion in the preceding process, warping and deformation can easily occur during heat treatment, causing flatness deviations. Exceeding the allowable range can lead to scrapping, increased production costs, reduced customer satisfaction, and unstable product quality. Summary of the Invention

[0005] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is that the existing heat treatment of special-shaped flat sheets is difficult to fix when loading and placing them in the furnace, and warping and deformation are prone to occur during the heat treatment process, resulting in flatness deviation. Exceeding the allowable range leads to scrapping, increasing production costs, reducing customer satisfaction, and unstable product quality. The present invention provides a stress-relieving and anti-deformation heat treatment fixture for special-shaped flat sheets. The fixture is used with a boss and a positioning rod to position the special-shaped flat sheet, and support rods are used around the fixture to cooperate with a top cover to fix and tighten it. This effectively solves the problem of warping and flatness deviation, and the fixture is easy to fix when loading and placing it in the furnace, which is convenient for employees to operate and improves production efficiency.

[0006] To achieve the above-mentioned objectives, the utility model provides a heat treatment fixture for relieving stress and preventing deformation of special-shaped flat sheets, comprising a chassis, a boss, a positioning rod, a support rod, a top cover and a fastening nut. The boss is fixed to the upper plane of the chassis, the positioning rod is arranged at the edge of the boss and connected to the chassis, the support rod is arranged at the four corners of the chassis, the top cover is provided with through holes corresponding to the positioning rod and the support rod, and the fastening nut cooperates with the support rod to fasten the top cover; wherein, the shape of the boss is the same as that of the special-shaped flat sheet, and the size of the boss is smaller than that of the chassis.

[0007] Furthermore, the chassis is configured to be machined from steel sections, using heat-resistant steel or austenitic stainless steel.

[0008] Furthermore, the boss includes two pieces, which are symmetrically distributed at 180 degrees on the chassis.

[0009] Furthermore, one boss corresponds to 3-5 positioning rods, and the positioning rods are arranged on the edge of the boss to play a role of fixing and limiting.

[0010] Furthermore, one end of the support rod passing through the top cover is provided with a thread, and the support rod cooperates with the fastening nut through the thread.

[0011] Furthermore, the length of the thread is set to 1 / 5-1 / 2 of the support rod.

[0012] Furthermore, the number of support rods is 4.

[0013] Furthermore, the length of the positioning rod is consistent with the length of the support rod.

[0014] Furthermore, it also includes handles, which are arranged on both sides of the top cover.

[0015] Furthermore, the top cover is configured to be machined from section steel, the material of which is heat-resistant steel or austenitic stainless steel, and the size of the top cover is consistent with that of the chassis.

[0016] Technical Effects

[0017] The utility model provides a heat treatment fixture for relieving stress and preventing deformation of special-shaped flat sheets. Positioning rods are used to perform multi-point product positioning on the special-shaped flat sheets, and support rods and a top cover are used in conjunction for fixing and tightening, effectively solving the problem of warping, flatness, and deformation. The fixture is easy to fix when placed in a furnace, making it convenient for employees to operate and improving production efficiency.

[0018] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1The utility model is a schematic diagram of a heat treatment fixture for relieving stress and preventing deformation of a special-shaped flat sheet according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] In the following description, specific details such as specific internal procedures and techniques are provided for purposes of illustration, not limitation, to facilitate a thorough understanding of the embodiments of the present invention. However, it will be apparent to those skilled in the art that the present invention can be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid obscuring the description of the present invention with unnecessary detail.

[0022] like Figure 1 As shown, the utility model provides a heat treatment fixture for stress relief and deformation prevention of special-shaped flat sheets, comprising a chassis 1, a boss 2, a positioning rod 3, a support rod 4, a top cover 5, and a fastening nut 6. The boss 2 is fixed to the upper plane of the chassis 1, the positioning rod 3 is arranged at the edge of the boss 2 and connected to the chassis 1, the support rod 4 is arranged at the four corners of the chassis 1, the top cover 5 is provided with through holes corresponding to the positioning rod 3 and the support rod 4, and the fastening nut 6 cooperates with the support rod 4 to fasten the top cover 5. The shape of the boss 2 is the same as that of the special-shaped flat sheet, and the size of the boss 2 is smaller than that of the chassis 1. The shape of the boss is the same as that of the special-shaped flat sheet, making the special-shaped flat sheet easy to take and place, and the boss plays a supporting role, ensuring that the special-shaped flat sheet is placed uniformly.

[0023] The chassis 1 is configured to be machined from section steel, using heat-resistant steel or austenitic stainless steel.

[0024] Preferably, the bosses comprise two, symmetrically distributed 180° on the chassis. This arrangement ensures uniform force distribution throughout the device, facilitates heat treatment, and improves heat treatment efficiency. In this embodiment, each boss corresponds to 3-5 positioning rods, which are arranged at the edges of the bosses to provide fixed positioning. In this embodiment, preferably, there are five positioning rods to provide five-point positioning around the irregularly shaped surface.

[0025] The end of the support rod that passes through the top cover is threaded, engaging the fastening nut. The thread length is set to 1 / 5-1 / 2 of the support rod. The thread length can be adjusted based on the number of products to improve production volume and efficiency.

[0026] The number of support rods is 4. The length of the positioning rod is consistent with that of the support rod.

[0027] The top cover is configured to be machined from section steel, the material of which is heat-resistant steel or austenitic stainless steel, and the size of the top cover is consistent with that of the chassis.

[0028] In another preferred embodiment of the present invention, it further comprises handles, which are arranged on both sides of the top cover to facilitate disassembly, assembly and pressing.

[0029] The following is a specific example to illustrate the specific use of the stress relief and deformation prevention heat treatment fixture of the special-shaped flat sheet of the present invention.

[0030] In this embodiment, the irregularly shaped flat sheet is L-shaped, with two bosses arranged 180° symmetrically to form a rectangular shape. This ensures uniform force distribution in the fixture and improves heat treatment efficiency. Positioning rods are positioned around the L-shaped sheet to secure it and ensure uniform stacking of products. The L-shaped sheet to be heated is placed between the five positioning rods at a time. After loading until both sides are at the same height, the top cover is installed using the handle and secured with nuts. Finally, the sheet is placed in the furnace for heating and subsequent processing.

[0031] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art based on the concepts of the present invention through logical analysis, reasoning, or limited experimentation based on the existing technology should be within the scope of protection defined by the claims.

Claims

1. A heat treatment fixture for relieving stress and preventing deformation of special-shaped flat sheets, characterized in that: It includes a chassis, a boss, a positioning rod, a support rod, a top cover and a fastening nut, the boss is fixed to the upper plane of the chassis, the positioning rod is arranged at the edge of the boss and connected to the chassis, the support rod is arranged at the four corners of the chassis, the top cover is provided with through holes corresponding to the positioning rod and the support rod, and the fastening nut is matched with the support rod to fasten the top cover; wherein, the shape of the boss is the same as that of the special-shaped flat sheet, and the size of the boss is smaller than that of the chassis.

2. A heat treatment fixture for relieving stress and preventing deformation of a special-shaped flat sheet according to claim 1, characterized in that: The chassis is configured to be machined from steel sections, using heat-resistant steel or austenitic stainless steel.

3. The heat treatment fixture for relieving stress and preventing deformation of a special-shaped flat sheet according to claim 1, characterized in that: The bosses include two pieces, which are symmetrically distributed at 180 degrees on the chassis.

4. A heat treatment fixture for relieving stress and preventing deformation of a special-shaped flat sheet as claimed in claim 3, characterized in that: One boss corresponds to 3-5 positioning rods, and the positioning rods are arranged on the edge of the boss to play a role of fixing and limiting.

5. The heat treatment fixture for relieving stress and preventing deformation of a special-shaped flat sheet according to claim 1, characterized in that: One end of the support rod passing through the top cover is provided with a thread, and the support rod is matched with the fastening nut through the thread.

6. A heat treatment fixture for relieving stress and preventing deformation of a special-shaped flat sheet as claimed in claim 5, characterized in that: The length of the thread is set to account for 1 / 5-1 / 2 of the support rod.

7. A heat treatment fixture for relieving stress and preventing deformation of a special-shaped flat sheet as claimed in claim 5, characterized in that: The number of support rods is 4.

8. The heat treatment fixture for relieving stress and preventing deformation of a special-shaped flat sheet according to claim 5, characterized in that: The length of the positioning rod is consistent with the length of the supporting rod.

9. The heat treatment fixture for relieving stress and preventing deformation of a special-shaped flat sheet according to claim 1, characterized in that: The utility model further comprises handles, wherein the handles are arranged on both sides of the top cover.

10. A heat treatment fixture for relieving stress and preventing deformation of a special-shaped flat sheet according to claim 9, characterized in that: The top cover is configured to be machined from section steel, the material of which is heat-resistant steel or austenitic stainless steel, and the size of the top cover is consistent with that of the chassis.

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