A kind of gear heat treatment after hardness uniformity detection sampling tool of speed reducer

Abstract

The utility model relates to the technical field of gear machining of speed reducer, and disclose a kind of hardness uniformity detection sampling tool after gear heat treatment of speed reducer, including base, three supports are uniformly and fixed with outside annular of base, three positioning components are uniformly arranged on the surface of base, three the positioning components top annular is uniformly provided with three auxiliary mechanism;The novel scheme is effectively translated by electric push rod with slider, to move the positioning rod on the top of slider, to adjust the outside diameter of three positioning rods, to adapt to the different diameter of speed reducer gear body inner diameter, improve the versatility of device, the friction between the anti-skid sleeve of positioning rod outside sleeve improves speed reducer gear body, reduce the possibility of speed reducer gear body deviation, organ type protective cover effectively avoids that sampling tool samples when swarf falls to the surface of electric push rod, protects electric push rod.

Description

Technical Field

[0001] This utility model belongs to the field of gear processing technology for speed reducers, specifically a sampling fixture for detecting the uniformity of hardness of speed reducer gears after heat treatment. Background Technology

[0002] As a core component in the field of mechanical transmission, the quality of the heat treatment of gears in a speed reducer directly determines the reliability and lifespan of the transmission system. One of the key indicators for gear heat treatment (such as carburizing, quenching, and tempering) is hardness uniformity. Uneven hardness distribution on the tooth surface, tooth root, and tooth core can easily lead to localized wear, fatigue fracture, or decreased transmission accuracy, ultimately causing speed reducer failure. Therefore, after heat treatment, the hardness distribution of speed reducer gears needs to be sampled and tested to verify the effectiveness of the process. During sampling, specialized tooling is required for efficient positioning of the gears to be tested to ensure the accuracy of the sampling location.

[0003] Existing tooling is mostly a single-specification customized design, which is difficult to be compatible with gears of different specifications. Each type of gear requires a separate fixture design, which is costly and complex to maintain. To address this, we propose a sampling tooling for detecting the uniformity of hardness of reducer gears after heat treatment. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a sampling fixture for testing the uniformity of hardness of reducer gears after heat treatment. It effectively solves the problem that existing fixtures are mostly single-specification customized designs, which are difficult to be compatible with gears of different specifications. They require the design of a separate fixture for each type of gear, resulting in high cost and complex maintenance.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sampling fixture for detecting the uniformity of hardness of a reducer gear after heat treatment, comprising a base, three supports uniformly fixed in a ring on the outer side of the base, three positioning components uniformly arranged in a ring on the surface of the base, three auxiliary mechanisms uniformly arranged in a ring on the top of the three positioning components, a reducer gear body attached to the outer side of the positioning components, the positioning components including an electric push rod, the electric push rod being disposed inside the support, a slider connected to the movable end of the electric push rod, a sliding groove attached to the outer side of the slider, a set of accordion-style protective covers symmetrically arranged on the surface of the slider, a positioning rod fixedly connected to the middle of the top of the slider, and an anti-slip rubber sleeve fitted on the outer side of the positioning rod.

[0006] Preferably, the slider and the slide groove form a telescopic sliding structure through an electric push rod, and the slide groove and the base are integrally formed.

[0007] Preferably, one set of the accordion-style protective covers always blocks the opening at the top of the chute.

[0008] Preferably, the auxiliary mechanism includes a fixed frame, which is fixedly mounted on the top of the positioning rod. A I-shaped frame is movably engaged on the inner side of the top of the fixed frame. A handle is fixedly connected to the top of the I-shaped frame, and a screw is fixedly connected to the bottom of the I-shaped frame. A pressure frame is sleeved on the outside of the screw, and an anti-slip pad is adhered to the bottom of the pressure frame.

[0009] Preferably, the fixing frame is inverted U-shaped, and the screw is connected to the fixing frame via an I-beam frame, a throttle, and a rotating structure.

[0010] Preferably, the pressure frame is inverted L-shaped, the pressure frame and the screw are connected by a thread, and the two sides of the pressure frame are in contact with the inner wall of the fixing frame.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. The electric push rod effectively drives the slider to move, thereby moving the positioning rod at the top of the slider. This facilitates the adjustment of the outer diameter of the three positioning rods to fit the inner diameter of the reducer gear body with different diameters, improving the versatility of the device. The anti-slip rubber sleeve on the outside of the positioning rod increases the friction between it and the reducer gear body, reducing the possibility of the reducer gear body shifting. The accordion-style protective cover effectively prevents material debris from falling onto the surface of the electric push rod during sampling, protecting the electric push rod.

[0012] 2. By rotating the throttle, the jig and screw are effectively rotated, which in turn causes the pressure frame on the screw surface to move up and down until the anti-slip rubber pad at the bottom of the pressure frame is in close contact with the upper surface of the reducer gear body. This achieves vertical limiting of the reducer gear body, improves the overall positioning effect of the reducer gear body, and the reducer gear body after efficient positioning has high stability, thus effectively ensuring the accuracy of the sampling position. Attached Figure Description

[0013] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0014] In the attached diagram: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the gear body removal structure of the reducer of this utility model; Figure 3 This is a partial cross-sectional structural diagram of the base and support of this utility model; Figure 4 This is a partial cross-sectional structural diagram of the auxiliary mechanism of this utility model.

[0015] In the diagram: 1. Base; 2. Bracket; 3. Positioning assembly; 301. Electric push rod; 302. Slider; 303. Slide groove; 304. Bellows-style protective cover; 305. Positioning rod; 306. Anti-slip rubber sleeve; 4. Auxiliary mechanism; 401. Fixing frame; 402. I-beam frame; 403. Throttle; 404. Screw; 405. Press frame; 406. Anti-slip rubber pad; 5. Reducer gear body. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-4 A sampling fixture for testing the uniformity of hardness of a reducer gear after heat treatment includes a base 1. Three supports 2 are uniformly fixed in a ring around the outer side of the base 1. Three positioning components 3 are uniformly arranged in a ring on the surface of the base 1. Three auxiliary mechanisms 4 are uniformly arranged in a ring on the top of the three positioning components 3. A reducer gear body 5 is attached to the outer side of the positioning components 3. Each positioning component 3 includes an electric push rod 301, which is located inside the supports 2. A slider 302 is connected to the movable end of the electric push rod 301. A sliding groove 303 is attached to the outer side of the slider 302. The slider 302 forms a telescopic sliding structure with the electric push rod 301 and the sliding groove 303. The sliding groove 303 is integrally formed with the base 1. A set of accordion-style protective covers 304 are symmetrically arranged on the surface of the slider 302. Further, a set of accordion-style protective covers 304... 4. The top opening of the slide 303 is always blocked. A positioning rod 305 is fixed to the middle of the top of the slider 302. An anti-slip rubber sleeve 306 is fitted on the outside of the positioning rod 305. The electric push rod 301 effectively drives the slider 302 to move horizontally, thereby moving the positioning rod 305 on the top of the slider 302. This facilitates the adjustment of the outer diameter of the three positioning rods 305 to fit the inner diameter of the reducer gear body 5 with different diameters, improving the versatility of the device. The anti-slip rubber sleeve 306 on the outside of the positioning rod 305 increases the friction between it and the reducer gear body 5, reducing the possibility of the reducer gear body 5 shifting. The bellows-type protective cover 304 effectively prevents material debris from falling onto the surface of the electric push rod 301 when the sampling tool is sampling, thus protecting the electric push rod 301.

[0018] Auxiliary mechanism 4 includes a fixed frame 401, which is fixed to the top of the positioning rod 305. A I-beam frame 402 is movably engaged on the inner side of the top of the fixed frame 401. A handle 403 is fixedly connected to the top of the I-beam frame 402, and a screw 404 is fixedly connected to the bottom of the I-beam frame 402. The fixed frame 401 is inverted U-shaped. The screw 404 forms a rotating structure with the fixed frame 401 through the I-beam frame 402, the handle 403, and the fixed frame 401. A pressure frame 405 is sleeved on the outside of the screw 404. Further, the pressure frame 405 is inverted L-shaped, and the pressure frame 405 is threadedly connected to the screw 404. The two sides of the pressure frame 405 are attached to the inner wall of the fixed frame 401. The bottom of the pressure frame 405 is bonded with an anti-slip pad 406. By rotating the handle 403, the I-shaped frame 402 and the screw 404 are effectively driven to rotate, thereby driving the pressure frame 405 on the surface of the screw 404 to move up and down until the anti-slip pad 406 at the bottom of the pressure frame 405 is in close contact with the upper surface of the reducer gear body 5, thereby realizing the vertical limit of the reducer gear body 5, improving the overall positioning effect of the reducer gear body 5. The reducer gear body 5 after efficient positioning has high stability, thereby effectively ensuring the accuracy of the sampling position.

Claims

1. A sampling fixture for detecting the uniformity of hardness of reducer gears after heat treatment, characterized in that: The device includes a base (1), three supports (2) are uniformly fixed in a ring on the outer side of the base (1), three positioning components (3) are uniformly fixed in a ring on the surface of the base (1), three auxiliary mechanisms (4) are uniformly fixed in a ring on the top of the three positioning components (3), a reducer gear body (5) is attached to the outer side of the positioning component (3), the positioning component (3) includes an electric push rod (301), the electric push rod (301) is located inside the support (2), the movable end of the electric push rod (301) is connected to a slider (302), the outer side of the slider (302) is attached to a slide groove (303), a set of bellows-style protective covers (304) are symmetrically arranged on the surface of the slider (302), a positioning rod (305) is fixedly connected to the middle of the top of the slider (302), and an anti-slip rubber sleeve (306) is fitted on the outer side of the positioning rod (305).

2. The sampling fixture for detecting the uniformity of hardness of reducer gears after heat treatment according to claim 1, characterized in that: The slider (302) forms a telescopic sliding structure with the electric push rod (301) and the slide groove (303), and the slide groove (303) and the base (1) are integrally formed.

3. The sampling fixture for detecting the uniformity of hardness of reducer gears after heat treatment according to claim 1, characterized in that: A set of accordion-style protective covers (304) always shields the top opening of the slide (303).

4. The sampling fixture for detecting the uniformity of hardness of reducer gears after heat treatment according to claim 1, characterized in that: The auxiliary mechanism (4) includes a fixed frame (401), which is fixed to the top of the positioning rod (305). A I-shaped frame (402) is movably engaged on the inner side of the top of the fixed frame (401). A throttle (403) is fixed to the top of the I-shaped frame (402). A screw (404) is fixed to the bottom of the I-shaped frame (402). A pressure frame (405) is sleeved on the outside of the screw (404). An anti-slip pad (406) is glued to the bottom of the pressure frame (405).

5. The sampling fixture for detecting the uniformity of hardness of reducer gears after heat treatment according to claim 4, characterized in that: The fixed frame (401) is inverted U-shaped, and the screw (404) forms a rotating structure with the fixed frame (401) through the I-beam frame (402), the throttle (403).

6. The sampling fixture for detecting the uniformity of hardness of reducer gears after heat treatment according to claim 4, characterized in that: The pressure frame (405) is inverted L shape. The pressure frame (405) and the screw (404) are connected by threads. The two sides of the pressure frame (405) are in contact with the inner wall of the fixing frame (401).

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