Large thin-wall outer gear ring heat treatment deformation control device

Abstract

The utility model relates to the technical field of heat treatment, in particular to a heat treatment deformation control device for a large thin-wall outer gear ring. The deformation control device comprises a fixing part, at least two first supporting units distributed in the circumferential direction of the gear ring are arranged on the fixing part, the working ends of the first supporting units abut against the inner ring of the gear ring, the first supporting units are detachably connected with second supporting units, and the working ends of the second supporting units abut against the outer ring of the gear ring. During use, the second supporting unit is connected with the first supporting unit, the first supporting unit abuts against the inner ring of the gear ring, the second supporting unit abuts against the outer ring of the gear ring, the first supporting unit and the second supporting unit clamp the inner side and the outer side of the gear ring respectively, and the gear ring can be prevented from deforming inwards through the first supporting unit; and the gear ring can be prevented from deforming towards the outer side through the second supporting unit, so that deformation of the gear ring is better controlled.

Description

Technical Field

[0001] This utility model relates to the field of heat treatment technology, specifically to a device for controlling the deformation of a large thin-walled external gear ring during heat treatment. Background Technology

[0002] Currently, in actual production, the machining and heat treatment of large thin-walled gear rings are quite difficult. During machining, due to their large size and thin walls, when a large fixing force is applied when fixing the gear ring on the machine tool, the gear ring has already undergone a certain degree of elliptical deformation. In the subsequent induction hardening and tempering process, the amount of elliptical deformation is further increased.

[0003] In order to control the deformation of the gear ring during the quenching process, Chinese patent (publication number: CN201634734U) discloses a special mold for controlling the deformation of a large thin-walled gear ring during quenching. The special mold is installed on the inner side of the gear ring to provide support for the inner side of the gear ring, thereby preventing the gear ring from deforming after quenching.

[0004] However, there are some problems with the use of this special mold. First, since the gear ring needs to be tempered after quenching, the special mold can only prevent the gear ring from deforming inward during the tempering stage, and it is difficult to control the deformation of the gear ring inward. Second, for the already deformed gear ring, the roundness of the gear ring needs to be corrected. The special mold can only correct the roundness of the inner circle of the gear ring, and cannot correct the roundness of the outer circle of the gear ring. Utility Model Content

[0005] To address the aforementioned deficiencies, the technical problem to be solved by this utility model is to provide a deformation control device for heat treatment of a large thin-walled external gear ring, which can control the deformation of the gear ring towards the inner and outer sides during the tempering stage.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A heat treatment deformation control device for a large thin-walled external gear ring includes a fixing member. The fixing member is provided with at least two first support units distributed along the circumference of the gear ring. The working end of the first support unit abuts against the inner ring of the gear ring. The first support unit is detachably connected to a second support unit, the working end of the second support unit abutting against the outer ring of the gear ring.

[0008] By adopting the above scheme, when in use, the second support unit is connected to the first support unit. The first support unit supports the inner ring of the gear ring, and the second support unit supports the outer ring of the gear ring. The first support unit and the second support unit respectively clamp the inner and outer sides of the gear ring. The first support unit can prevent the gear ring from deforming inward, and the second support unit can prevent the gear ring from deforming outward, thereby better controlling the deformation of the gear ring.

[0009] The present invention is further configured such that the first support unit includes a support arm and a first clamping block. One end of the support arm is fixedly connected to a fixing member, and the other end of the support arm is fixedly connected to a fixing block. At least one first adjusting bolt is threaded onto the fixing block. One end of the first adjusting bolt is connected to the first clamping block, and the first adjusting bolt can drive the first clamping block to press against the inner ring of the gear ring. By adjusting the first adjusting bolt, the first clamping block is driven to press against the inner ring of the gear ring, which allows the first support unit to adapt to gear rings with different inner diameters. Furthermore, if the gear ring is deformed, by adjusting the first clamping block to press against the inner ring of the gear ring, and then performing heat treatment on the gear ring, the gear ring is deformed from the inside to the outside under the pressing action of the first clamping block, thereby achieving the effect of rounding from the inside of the gear ring.

[0010] The present invention is further configured such that the second support unit includes a second clamping block and at least one connecting arm. Both ends of the connecting arm are provided with hooks. One hook engages with a fixing block, and the other hook is threadedly connected to a second adjusting bolt. One end of the second adjusting bolt is connected to the second clamping block, and the second adjusting bolt can drive the second clamping block to press against the outer ring of the gear ring. Through the second adjusting bolt, the second clamping block is driven to press against the outer ring of the gear ring, allowing the second pressing unit to adapt to gear rings of different outer diameters. Furthermore, if the gear ring is deformed, by adjusting the second clamping block to press against the outer ring of the gear ring, and then heat-treating the gear ring, the gear ring will deform from the outside to the inside under the pressing action of the second clamping block, thereby achieving the effect of rounding from the outside of the gear ring. Since one hook of the connecting arm engages with the fixing block, when the second adjusting bolt drives the second clamping block to press against the outer ring of the gear ring, the hook of the connecting arm engages the fixing block, thus fixing the connecting arm and the fixing block together. The first and second clamping blocks together clamp the gear ring, facilitating the installation and disassembly of the second support unit.

[0011] The present invention is further configured such that the working end of the first clamping block abuts against the inner ring of the gear ring in an arc shape that matches the inner ring of the gear ring. Because the end of the first clamping block used to hold the inner ring of the gear ring is an arc shape that matches the inner ring of the gear ring, this results in a larger contact area between the first clamping block and the inner ring of the gear ring, thereby providing better support for the gear ring.

[0012] The present invention is further configured such that the working end of the second clamping block abuts against the outer ring of the gear ring in an arc shape that matches the outer ring of the gear ring. Because the working end of the second clamping block abuts against the outer ring of the gear ring in an arc shape that matches the outer ring of the gear ring, this results in a larger contact area between the second clamping block and the outer ring of the gear ring, thereby providing better support for the gear ring.

[0013] This invention is further configured such that there are two connecting arms, the first ends of which correspond one-to-one with the two ends of the fixing block distributed along the circumference of the fixing member, and the second ends of which correspond one-to-one with the two ends of the second clamping block distributed along the circumference of the fixing member. By hooking the two ends of the fixing block with the two connecting arms respectively, and by using the two second adjusting bolts to abut against the second clamping block, the second clamping block can more stably support the gear ring.

[0014] The present invention is further configured such that the first clamping block has a first groove for inserting a first adjusting bolt, and the second clamping block has a second groove for inserting a second adjusting bolt. Inserting the first adjusting bolt into the first groove enhances the stability of the connection between the first clamping block and the first adjusting bolt. Inserting the second adjusting bolt into the second groove enhances the stability of the connection between the second clamping block and the second adjusting bolt.

[0015] The present invention is further configured such that the fixing member is ring-shaped. The ring-shaped fixing member is lighter overall.

[0016] The present invention is further configured such that the first support unit is evenly distributed along the circumferential direction of the fixing member. The even distribution of the first support unit along the circumferential direction of the fixing member makes the support distribution for the gear ring more uniform.

[0017] The present invention is further configured such that the first support unit comprises six units.

[0018] In summary, the large thin-walled external gear ring heat treatment deformation control device provided by this utility model has at least the following beneficial effects:

[0019] 1. It can control the deformation of the gear ring towards the inward and outward directions.

[0020] 2. It can perform inner and outer rounding treatments on deformed gear rings. 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without any novel effort.

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention showing the state of the gear ring being held against the inner and outer sides.

[0023] Figure 2 This is an exploded view of the first support unit and the second support unit in this utility model;

[0024] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0025] Figure 4 This is a three-dimensional structural diagram of the first clamping block in this utility model.

[0026] The reference numerals in the attached drawings include: fastener 1, first support unit 2, support arm 201, first clamping block 202, fixing block 203, first adjusting bolt 204, first groove 205, first mounting hole 206, second support unit 3, second clamping block 301, connecting arm 302, hook 303, second adjusting bolt 304, second groove 305, second mounting hole 306, and gear ring 4. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solution of this utility model, the following description is provided in conjunction with the appendix. Figure 1-4 The present invention will be further described in detail below with reference to specific embodiments.

[0028] Please see Figure 1-4 This embodiment provides a heat treatment deformation control device for a large thin-walled external gear ring, including a fixing member 1, which is preferably annular. At least two first support units 2 are provided on the fixing member 1, distributed along the circumference of the gear ring 4. The working ends of the first support units 2 abut against the inner ring of the gear ring 4. Preferably, the first support units 2 are evenly distributed along the circumference of the gear ring 4. In this embodiment, six first support units 2 are preferably provided, evenly distributed along the circumference of the gear ring 4, that is, evenly distributed along the circumference of the annular fixing member 1. A second support unit 3 is detachably connected to each first support unit 2, and the working end of the second support unit 3 abuts against the outer ring of the gear ring 4.

[0029] In some embodiments, the first support unit 2 includes a support arm 201 and a first clamping block 202. One end of the support arm 201 is fixedly connected to the fixing member 1, and the other end of the support arm 201 is fixedly connected to a fixing block 203. At least one first adjusting bolt 204 is threaded onto the fixing block 203. One end of the first adjusting bolt 204 is connected to the first clamping block 202, and the first adjusting bolt 204 can drive the first clamping block 202 to press against the inner ring of the gear ring 4. Specifically, the fixing block 203 is strip-shaped and is arranged perpendicularly to the support arm 201. The support arm 201 is specifically fixedly connected to the middle of the fixing block 203. The fixing block 203 has two first mounting holes 206, which are located on both sides of the connecting arm 302. In use, the two first adjusting bolts 204 abut against the two ends of the first clamping block 202, so that the first clamping block 202 presses against the inner ring of the gear ring 4 radially. The end of the first clamping block 202 that abuts against the inner ring of the gear ring 4 is an arc shape that matches the inner ring of the gear ring 4. The end of the first clamping block 202 that abuts against the gear ring 4 is the working end of the first support unit 2.

[0030] In some embodiments, the second support unit 3 includes a second clamping block 301 and at least one connecting arm 302. Both ends of the connecting arm 302 are provided with hooks 303, with the free ends of both hooks 303 facing upwards and perpendicular to the connecting arm 302. One hook 303 hooks onto the fixing block 203, and the other hook 303 is threadedly connected to a second adjusting bolt 304. One end of the second adjusting bolt 304 is connected to the second clamping block 301, and the second adjusting bolt 304 can drive the second clamping block 301 to press against the outer ring of the gear ring 4. Specifically, the hook 303 on the connecting arm 302 away from the fixing member 1 has a second mounting hole 306, and the second adjusting bolt 304 is threaded into the corresponding second mounting hole 306. The end of the second clamping block 301 that presses against the outer ring of the gear ring 4 is an arc shape matching the outer ring of the gear ring 4, and this end of the second clamping block 301 that presses against the outer ring of the gear ring 4 is the working end of the second support unit 3.

[0031] Preferably, there are two connecting arms 302. The first ends of the two connecting arms 302 correspond one-to-one with the two ends of the fixing block 203 distributed along the circumferential direction of the gear ring 4, and the second ends of the two connecting arms 302 correspond one-to-one with the two ends of the second clamping block 301 distributed along the circumferential direction of the gear ring 4.

[0032] Please see Figure 3 and Figure 4The first clamping block 202 has a first groove 205 for inserting a first adjusting bolt 204, and one end of the first adjusting bolt 204 inserted into the first groove 205 can rotate relative to the first groove 205. The second clamping block 301 has a second groove 305 for inserting a second adjusting bolt 304, and one end of the second adjusting bolt 304 inserted into the second groove 305 can rotate relative to the second groove 305.

[0033] It should be noted that words indicating direction in this article, such as "up" and "down," are all in the format of "upper" and "lower." Figure 1 The direction setting is for ease of description only and has no other specific meaning.

[0034] It should also be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or apparatus comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or apparatus that includes the aforementioned element.

[0035] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A device for controlling the deformation of a large thin-walled external gear ring during heat treatment, characterized in that, Includes a fixing member (1), on which at least two first support units (2) are provided distributed along the circumferential direction of the gear ring (4), the working end of the first support unit (2) abuts against the inner ring of the gear ring (4), and the first support unit (2) is detachably connected to a second support unit (3), the working end of the second support unit (3) abuts against the outer ring of the gear ring (4).

2. The heat treatment deformation control device for a large thin-walled external gear ring as described in claim 1, characterized in that, The first support unit (2) includes a support arm (201) and a first clamping block (202). One end of the support arm (201) is fixedly connected to the fixing member (1), and the other end of the support arm (201) is fixedly connected to a fixing block (203). At least one first adjusting bolt (204) is threadedly connected to the fixing block (203). One end of the first adjusting bolt (204) is connected to the first clamping block (202), and the first adjusting bolt (204) can drive the first clamping block (202) to press against the inner ring of the gear ring (4).

3. The heat treatment deformation control device for a large thin-walled external gear ring as described in claim 2, characterized in that, The second support unit (3) includes a second clamping block (301) and at least one connecting arm (302). Both ends of the connecting arm (302) are provided with hooks (303). One of the hooks (303) hooks onto the fixing block (203), and the other hook (303) is threadedly connected to a second adjusting bolt (304). One end of the second adjusting bolt (304) is connected to the second clamping block (301), and the second adjusting bolt (304) can drive the second clamping block (301) to press against the outer ring of the gear ring (4).

4. The heat treatment deformation control device for a large thin-walled external gear ring as described in claim 3, characterized in that, The first clamping block (202) abuts against one end of the inner ring of the gear ring (4) in an arc shape that matches the inner ring of the gear ring (4).

5. The heat treatment deformation control device for a large thin-walled external gear ring as described in claim 4, characterized in that, The second clamping block (301) abuts against one end of the outer ring of the gear ring (4) in an arc shape that matches the outer ring of the gear ring (4).

6. The heat treatment deformation control device for a large thin-walled external gear ring as described in any one of claims 3-5, characterized in that, Two connecting arms (302) are provided. The first ends of the two connecting arms (302) correspond one-to-one with the two ends of the fixed block (203) distributed along the circumferential direction of the gear ring (4). The second ends of the two connecting arms (302) correspond one-to-one with the two ends of the second clamping block (301) distributed along the circumferential direction of the gear ring (4).

7. The heat treatment deformation control device for a large thin-walled external gear ring as described in claim 6, characterized in that, The first clamping block (202) has a first groove (205) for inserting the first adjusting bolt (204), and the second clamping block (301) has a second groove (305) for inserting the second adjusting bolt (304).

8. The heat treatment deformation control device for a large thin-walled external gear ring as described in claim 1, characterized in that, The fastener (1) is ring-shaped.

9. The heat treatment deformation control device for a large thin-walled external gear ring as described in claim 1, characterized in that, The first support unit (2) is evenly distributed along the circumferential direction of the gear ring (4).

10. The heat treatment deformation control device for a large thin-walled external gear ring as described in claim 9, characterized in that, The first support unit (2) has six units.

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