Heat treatment tool for controlling thermal deformation of disc type large gear
By designing a heat treatment fixture with detachable stepped inserts and support arms, the problems of high specialization, poor flexibility, and high cost in deformation control during the heat treatment of large disc gears were solved. This achieved the versatility and stability of the fixture, reduced production costs, and improved the heat treatment effect.
Patent Information
- Application Number
- CN202520320288.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-02-26
AI Technical Summary
In the existing technology, the heat treatment process of large disc gears has problems such as strong specialization of deformation control, poor flexibility and high cost, which leads to waste of tooling and fixture resources and increased production costs.
Design a heat treatment fixture including a support positioning plate and a stepped insert. The support positioning plate has multiple radial support arms, and the stepped insert is detachably inserted into the support arms. It is made of carbon fiber material. The support arms are equipped with limit bosses and temperature sensors, and are fixed by pins to achieve the versatility and stability of the fixture.
It improves the versatility and flexibility of tooling, reduces production costs, ensures stable support and temperature monitoring during the heat treatment process, prevents deformation, and improves the heat treatment effect.
Smart Images
Figure CN223780317U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a heat treatment fixture for controlling the thermal deformation of large disc-shaped gears, belonging to the technical field of heat treatment fixtures. Background Technology
[0002] In the field of mechanical manufacturing, large disc gears are important transmission components, and their quality and performance directly affect the stability and reliability of the entire mechanical system. To improve the hardness and wear resistance of large disc gears, heat treatment, especially rapid cooling quenching, is usually required. However, if large disc gears are left to lie flat during heat treatment, they are prone to deformation, particularly internal shrinkage and warping. This not only affects the gear's precision and assembly performance but may also cause noise and vibration during operation, and even lead to mechanical failure.
[0003] To address this issue, the traditional approach is to design specialized tooling fixtures based on the shape and dimensions of large disc-shaped gears. These fixtures effectively control deformation of the parts during heat treatment through their constraint. While these specialized fixtures do improve the quality of heat treatment to some extent, they become unusable and are discarded as scrap when the part's dimensions change or different processes are required.
[0004] In today's manufacturing environment, characterized by rapid project iterations and frequent product updates, changes in part dimensions and the development of new projects are commonplace. Therefore, specialized tooling fixtures designed for individual parts quickly become obsolete and a burden on businesses. Furthermore, tooling fixtures require high-temperature and deformation-resistant materials, involve complex processes, and are typically expensive to manufacture. The large number of discarded specialized tooling fixtures not only wastes resources but also increases production costs for companies. Utility Model Content
[0005] The purpose of this utility model is to provide a heat treatment fixture for controlling the thermal deformation of large disc gears, so as to improve or solve the technical problems of high specialization, poor flexibility and high cost in the design of fixtures for deformation control during the heat treatment of large disc gears as described above.
[0006] The technical solution provided by this utility model is as follows: A heat treatment fixture for controlling the thermal deformation of large disc gears includes a support positioning plate and a stepped insert. The support positioning plate includes multiple support arms, which are evenly distributed radially in the circumferential direction. One end of the stepped insert is provided with a slot, and the other end of the stepped insert is provided with a limiting step. The number of stepped inserts is adapted to the number of support arms. The stepped inserts are detachably inserted into their respective support arms through the slots.
[0007] Compared with the prior art, the technical solution provided by this utility model has the following advantages: First, by designing stepped inserts of different sizes, the support requirements of parts of different sizes can be met, thereby improving the versatility of the tooling. Second, the stepped inserts adopt a detachable design, which not only facilitates installation and disassembly but also promotes the recycling of tooling components, effectively reducing production costs.
[0008] Based on the above technical solution, the present invention can be further improved as follows.
[0009] Furthermore, the support arm is provided with a limiting boss, and the stepped insert is provided with a sliding groove that mates with the limiting boss.
[0010] The beneficial effect of adopting the above-mentioned further solution is that by designing a limiting boss and a sliding groove that cooperates with the limiting boss on the support arm, the connection stability between the stepped insert and the support arm is enhanced, preventing loosening or falling off during the heat treatment process, thereby ensuring the stable support of the tooling for the disc-shaped large gear.
[0011] Furthermore, both the support positioning piece and the stepped insert are made of carbon fiber material.
[0012] The beneficial effects of adopting the above-mentioned further scheme are that when heated to high temperature, the rigidity and toughness of carbon fiber material become stronger, and it has good dimensional stability. When the part is rapidly cooled from high temperature, it is quenched, which effectively controls the deformation of the inner hole end face of the part and improves the heat treatment effect.
[0013] Furthermore, the support positioning piece includes three support arms, with the central angles of any two adjacent support arms being equal.
[0014] The beneficial effect of adopting the above-mentioned further solution is that it ensures uniform support of the tooling for the large disc-shaped gear, avoids thermal deformation caused by uneven support, and improves the balance and stability of the tooling.
[0015] Furthermore, the limiting step of the stepped insert is provided with an anti-slip layer for contacting the large disc-shaped gear.
[0016] The beneficial effect of adopting the above-mentioned further solution is that it enhances the friction between the tooling and the large disc gear, preventing slippage or displacement during the heat treatment process.
[0017] Furthermore, the support arm is equipped with a temperature sensor to monitor the temperature changes of the tooling during operation.
[0018] The advantage of adopting the above-mentioned further solution is that it enables real-time monitoring of the temperature changes of the tooling during operation, providing a basis for timely adjustment of heat treatment parameters.
[0019] Furthermore, it also includes a pin, and both the stepped insert and the limiting boss of the support arm are provided with pin holes. The pin is inserted into the pin hole to fix the stepped insert on the support arm.
[0020] The beneficial effect of adopting the above-mentioned further solution is that by adding pins and corresponding pin hole designs, the stepped inserts are more firmly fixed to the support arm, further improving the connection stability and safety of the tooling. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0022] Figure 1 This is a schematic diagram of the structure of the heat treatment fixture according to Embodiment 1 of this utility model;
[0023] Figure 2 This is a schematic diagram of the structure of the support positioning piece according to Embodiment 1 of this utility model;
[0024] Figure 3 This is a schematic diagram of the stepped insert structure according to Embodiment 1 of this utility model;
[0025] Figure 4 This is a reference diagram showing the state of the heat treatment tooling of this utility model during use;
[0026] Figure 5 This is a reference diagram showing the bottom support state of the heat treatment fixture of this utility model during use;
[0027] Figure 6 This is a schematic diagram of the structure of the support positioning piece in Embodiment 2 of this utility model;
[0028] Figure 7 This is a schematic diagram of the stepped insert structure in Embodiment 2 of this utility model;
[0029] Figure 8 This is a schematic diagram of the heat treatment fixture according to Embodiment 2 of this utility model;
[0030] In the figure, 100 is a support positioning piece; 110 is a support arm; 111 is a limiting boss; 113 is a pin; 200 is a stepped insert; 210 is a slot; 211 is a slide groove; 220 is a limiting step; 221 is a vertical end face; 222 is a stepped plane; and 300 is a disc-shaped large gear part. Detailed Implementation
[0031] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and do not imply any priority in order or any specific technical meaning. Furthermore, the concepts of "connection" and "linkage" mentioned in this application, unless otherwise specified, are considered to include both direct and indirect connections.
[0032] When interpreting the description of this application, it should be clarified that terms such as "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating directions or positional relationships, are based on the perspective and layout shown in the accompanying drawings. They are intended to facilitate explanation and simplify the description process, and are not absolute limitations on the actual location, construction method, or operating mode of the described device or element. Therefore, these terms should not be construed as restrictive interpretations of the content of this application.
[0033] The principles and features of this utility model are described below with reference to examples. The examples are only used to explain this utility model and are not intended to limit the scope of this utility model.
[0034] Example 1:
[0035] like Figure 1 - Figure 3 As shown, a heat treatment fixture for controlling the thermal deformation of large disc-shaped gears includes a support positioning plate 100 and a stepped insert 200. The support positioning plate 100 includes multiple support arms 110, which are radially and uniformly distributed in the circumferential direction. One end of the stepped insert 200 is provided with a slot 210, and the other end of the stepped insert 200 is provided with a limiting step 220. The limiting step 220 includes a vertical end face 221 and a step plane 222. The number of stepped inserts 200 is adapted to the number of support arms 110. The stepped inserts 200 are detachably inserted into their respective support arms 110 through the slots 210.
[0036] In addition, in this embodiment, both the support positioning piece 100 and the stepped insert 200 are made of carbon fiber material. When heated to high temperatures, the rigidity and toughness of carbon fiber material increase, resulting in excellent dimensional stability. The part is quenched when rapidly cooled from high temperature, which effectively controls the deformation of the inner hole end face of the part and improves the heat treatment effect.
[0037] In this embodiment, the support positioning plate 100 includes three support arms 110, with the central angles of adjacent support arms 110 being equal. Of course, the support positioning plate 100 may also have more or fewer support arms 110, as long as it can ensure uniform support of the tooling for the large disc-shaped gear, it should be within the protection scope of this utility model.
[0038] The stepped insert 200 has a limiting step 220 with an anti-slip layer for contact with the large disc gear. This enhances the friction between the tooling and the large disc gear, preventing slippage or displacement during heat treatment.
[0039] The support arm 110 is equipped with a temperature sensor, which can monitor the temperature changes of the tooling in real time during the working process, providing a basis for timely adjustment of heat treatment parameters.
[0040] like Figure 4 and Figure 5 As shown, the method for heat treatment of the large gear part 300 of the support disc type using the heat treatment tooling of this utility model is as follows:
[0041] Preparation stage: First, based on the specific dimensions of the disc-shaped large gear part 300 to be heat-treated, the most suitable set is selected from the preset stepped inserts 200 of different sizes to ensure the compatibility between the stepped inserts 200 and the disc-shaped large gear part 300.
[0042] Assemble the tooling: Insert the selected stepped inserts 200 one by one into the support arm 110 of the support positioning piece 100. Due to the design of the stepped inserts 200, which have slots 210 and limiting steps 220, they can be firmly and accurately installed on the support arm 110 to form a stable support structure, thereby realizing the rapid assembly of the tooling and improving work efficiency.
[0043] Placement of parts: Carefully place the disc-shaped large gear part 300 to be heat-treated on the assembled heat treatment fixture. The inner hole of the disc-shaped large gear part 300 will be tightly engaged on the vertical end face 221 of the stepped insert 200, while the stepped plane 222 of the stepped insert 200 provides solid support.
[0044] Heat treatment process: The assembled tooling and the disc-shaped large gear part 300 are placed together in a heat treatment device for the predetermined heat treatment operation. After being heated to a high temperature, the disc-shaped large gear part 300 will undergo a rapid cooling process, i.e., quenching. Because the heat treatment tooling of this utility model uses high-strength and high-stability carbon fiber material and has a reasonable support structure, it can effectively control the deformation of the inner hole end face of the part during the quenching process, ensuring the heat treatment effect.
[0045] Monitoring and Adjustment: During the heat treatment process, the temperature changes of the tooling and parts can be monitored in real time by the temperature sensor on the support arm 110. Based on the feedback from the temperature sensor, heat treatment parameters, such as heating temperature, holding time, and cooling rate, can be adjusted in a timely manner to ensure the stability and controllability of the heat treatment process.
[0046] Disassembly and recycling: After heat treatment, once the parts have cooled to a safe temperature, the stepped insert 200 can be easily disassembled, enabling the tooling components to be reused.
[0047] Example 2:
[0048] like Figures 6-8 As shown, unlike Embodiment 1, in this embodiment, the support arm 110 is further provided with a limiting boss 111, and the stepped insert 200 is provided with a sliding groove 211 that mates with the limiting boss 111. By designing the limiting boss 111 and the sliding groove 211 that mates with the limiting boss 111 on the support arm 110, the connection stability between the stepped insert 200 and the support arm 110 is enhanced, preventing loosening or detachment during heat treatment, thereby ensuring the stable support of the tooling for the large disc gear.
[0049] The heat treatment fixture also includes a pin 113. Both the stepped insert 200 and the limiting boss 111 of the support arm 110 are provided with pin holes. The pin 113 is inserted into the pin hole to fix the stepped insert 200 onto the support arm 110. By adding the pin 113 and the corresponding pin hole design, the stepped insert 200 is more firmly fixed to the support arm 110, further improving the connection stability and safety of the fixture.
[0050] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A heat treatment fixture for controlling the thermal deformation of large disc-shaped gears, characterized in that, The device includes a support positioning piece (100) and a stepped insert (200). The support positioning piece (100) includes multiple support arms (110), which are evenly distributed radially in the circumferential direction. One end of the stepped insert (200) is provided with a slot (210), and the other end of the stepped insert (200) is provided with a limiting step (220). The number of stepped inserts (200) is adapted to the number of support arms (110). The stepped inserts (200) are detachably inserted into their respective support arms (110) through the slots (210).
2. The heat treatment fixture for controlling the thermal deformation of large disc-shaped gears according to claim 1, characterized in that, The support arm (110) is provided with a limiting boss (111), and the stepped insert (200) is provided with a sliding groove (211) that cooperates with the limiting boss (111).
3. The heat treatment fixture for controlling the thermal deformation of large disc-shaped gears according to claim 2, characterized in that, Both the support positioning piece (100) and the stepped insert (200) are made of carbon fiber material.
4. The heat treatment fixture for controlling the thermal deformation of large disc-shaped gears according to any one of claims 1-3, characterized in that, The support positioning piece (100) includes three support arms (110), and the central angles of two adjacent support arms (110) are equal.
5. The heat treatment fixture for controlling the thermal deformation of large disc-shaped gears according to claim 4, characterized in that, The step-type insert (200) has a limiting step (220) with an anti-slip layer for contacting the disc-shaped large gear.
6. The heat treatment fixture for controlling the thermal deformation of large disc-shaped gears according to claim 5, characterized in that, The support arm (110) is equipped with a temperature sensor to monitor the temperature change of the tooling during operation.
7. The heat treatment fixture for controlling the thermal deformation of large disc-shaped gears according to claim 6, characterized in that, It also includes a pin (113), and the limiting boss (111) of the stepped insert (200) and the support arm (110) are provided with pin (113) holes. The pin (113) is inserted into the pin (113) hole to fix the stepped insert (200) on the support arm (110).