Gear heat treatment weight reduction rod penetrating tool

Abstract

The utility model discloses a gear heat treatment weight reduction penetrating rod tool which comprises a long-rod-shaped weight reduction penetrating rod, the side wall of the weight reduction penetrating rod is provided with at least one pair of supporting arc plates which are arranged in a central symmetry mode, the working faces of the supporting arc plates are attached to the hole wall face of a piece gear, and the supporting arc plates are used for being in contact with the hole wall of an inner hole of the piece gear for supporting. The gear heat treatment weight-reducing rod penetrating tool adopts the cambered surface design, so that the stress concentration of the contact part of a large-modulus piece gear and the gear heat treatment weight-reducing rod penetrating tool is greatly reduced when the large-modulus piece gear is hung, and an inner hole of the piece gear is free of indentation after heat treatment.

Description

Technical Field

[0001] This utility model belongs to the field of gear manufacturing technology, and relates to heat treatment, specifically to a gear heat treatment weight reduction rod insertion tool. Background Technology

[0002] Gears are key components in gearboxes that transmit torque. To obtain gears with high strength and wear resistance, low-carbon steel is often used and subjected to carburizing and quenching treatment to meet the gear's performance requirements. In gearboxes, to obtain greater torque, the size and weight of the low-gear sprockets on the second shaft are often very large. During heat treatment, to ensure the runout of the sprocket end face and simplify equipment operation, existing technologies typically use cross-shaped or H-shaped weight-reducing rods for hanging and production of sprockets. Due to the heavy weight of the sprockets in first and second gear, and the point or line contact between the sprocket and the tooling, stress concentration occurs at the inner hole of the sprocket, resulting in a partially eccentric structure. This causes deep indentations in the inner hole of the sprocket after heat treatment, which cannot be removed by grinding the inner hole, affecting the product's appearance quality. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a gear heat treatment weight reduction rod tooling to solve the technical problem that the indentation caused by uneven force on the inner hole of the gear due to the mounting of the gear during heat treatment is difficult to remove.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A gear heat treatment weight reduction inserting tool includes a long rod-shaped weight reduction inserting rod. At least one pair of centrally symmetrically arranged support arc plates are provided on the side wall of the weight reduction inserting rod. The working surface of the support arc plates is in contact with the hole wall of the gear, and the support arc plates are used to contact and support the hole wall of the gear.

[0006] This utility model also has the following technical features:

[0007] Preferably, two crossbeam holders are fixedly installed at both ends of each pair of supporting arc plates. The crossbeam holders are arranged along the axial direction. Each crossbeam holder has a crossbeam slot with open ends. The slotting direction of the crossbeam slot is perpendicular to the length direction of the crossbeam holder.

[0008] Specifically, the bottoms of the four crossbeam slots located at both ends of the same supporting arc plate are in the same plane, and the plane is set parallel to the central axis of the weight-reducing through rod.

[0009] Specifically, the distance between the plane and the central axis of the weight-reducing rod is greater than the distance between the working surface of the corresponding support arc plate and the central axis of the weight-reducing rod.

[0010] Specifically, the beam holder is mounted on the beam via a beam slot.

[0011] Preferably, the surface of the crossbeam that contacts the bottom of the crossbeam slot is provided with an anti-slip surface.

[0012] Preferably, the cross-section of the weight-reducing through rod is a cross-shaped structure, and support arc plates are respectively provided at the symmetrical ends of the cross-shaped structure.

[0013] Preferably, the cross-shaped structure has multiple reinforcing ribs at the intersection.

[0014] Compared with the prior art, the present invention has the following beneficial technical effects:

[0015] (I) The gear heat treatment weight reduction inserting tool in this utility model adopts an arc surface design, which greatly reduces the stress concentration at the contact part with the gear heat treatment weight reduction inserting tool when the large module gear is mounted, so that there are no indentations in the inner hole of the gear after heat treatment.

[0016] (II) The gear heat treatment weight reduction rod inserting fixture in this utility model is provided with a crossbeam holder and a crossbeam slot, so that the gear heat treatment weight reduction rod inserting fixture can be stably clamped on the crossbeam.

[0017] (III) The gear heat treatment weight reduction rod insertion tooling in this utility model adopts reinforcing ribs, which makes the gear heat treatment weight reduction rod insertion tooling lightweight and structurally stable.

[0018] (IV) The gear heat treatment weight reduction rod tooling in this utility model can effectively solve the problem of indentation in the inner hole of large module gears after heat treatment, and improve the appearance quality of the product. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the gear heat treatment weight reduction tooling.

[0020] Figure 2 for Figure 1 Left view of the gear heat treatment weight reduction rod insertion tool.

[0021] Figure 3 for Figure 1 A schematic diagram of the structure of the gear heat treatment weight reduction tool for mounting the gear plate.

[0022] Figure 4 for Figure 3 The left view.

[0023] Figure 5 A schematic diagram of the crossbeam of the gear-mounting heat treatment weight reduction tooling.

[0024] Figure 6 A schematic diagram of the overall structure of the frame and gears, including the tooling for heat treatment to reduce weight and the mounting of the gears.

[0025] The meanings of the labels in the diagram are as follows: 1-weight reduction rod, 2-support arc plate, 3-gear, 4-beam bracket, 5-beam slot, 6-beam, 7-anti-slip surface, 8-reinforcing rib, 9-frame.

[0026] The specific content of this utility model will be further explained in detail below with reference to the embodiments. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, all equipment and components in this utility model are based on existing technologies. For example, the disc gears are known disc gears, and the frame is a known frame.

[0028] Following the above technical solution, the following are specific embodiments of this utility model. It should be noted that this utility model is not limited to the following specific embodiments, and all equivalent modifications made based on the technical solution of this application fall within the protection scope of this utility model.

[0029] Example:

[0030] This embodiment provides a gear heat treatment weight reduction tooling for threading rods, such as... Figure 1 As shown, the device includes a long, rod-shaped weight-reducing through-rod 1. At least one pair of centrally symmetrically arranged support arc plates 2 are provided on the side wall of the weight-reducing through-rod 1. The working surface of the support arc plates 2 is in contact with the wall of the bore of the gear 3, and the support arc plates 2 are used for contact support with the bore wall of the gear 3. The contact between the support arc plates 2 and the bore of the gear 3 is smooth and without protrusions, resulting in a good stress distribution in the bore of the gear 3 during heat treatment. This ensures that the bore of the gear 3 is free of indentations after it exits the furnace, thus solving the technical problem of difficult-to-eliminate indentations in the bore of the gear 3.

[0031] As a preferred embodiment, two crossbeam holders 4 are fixedly provided at both ends of each pair of supporting arc plates 2. The length direction of the crossbeam holders 4 is arranged along the axial direction. Each crossbeam holder 4 is provided with a crossbeam slot 5 with both ends open. The slotting direction of the crossbeam slot 5 is perpendicular to the length direction of the crossbeam holder 4.

[0032] As a preferred embodiment, the bottoms of the four crossbeam slots 5 located at both ends of the same supporting arc plate 2 are located in the same plane, and the plane is set parallel to the central axis of the weight reduction rod 1.

[0033] As a preferred embodiment, the distance between the plane and the central axis of the weight-reducing through rod 1 is greater than the distance between the working surface of the corresponding support arc plate 2 and the central axis of the weight-reducing through rod 1.

[0034] As a preferred embodiment, the crossbeam holder 4 is mounted on the crossbeam 6 via the crossbeam slot 5.

[0035] As a preferred embodiment, an anti-slip surface 7 is provided on the surface of the crossbeam 6 that contacts the bottom of the crossbeam slot 5.

[0036] As a preferred embodiment of this invention, such as Figure 2 As shown, the cross-section of the weight-reducing through rod 1 is a cross-shaped structure, and support arc plates 2 are respectively provided on the symmetrical ends of the cross-shaped structure.

[0037] As a preferred embodiment, the cross-shaped structure has multiple reinforcing ribs 8 at the intersection.

[0038] In this embodiment, as Figure 3 and Figure 4 As shown, multiple gears 3 can be coaxially mounted on the gear heat treatment weight reduction through rod tooling at one time.

[0039] When using the gear heat treatment weight reduction through-rod tooling in this embodiment, such as... Figure 6 As shown, the working surface of the selected support arc plate 2 faces upward; then, the gear 3 to be heat-treated is coaxially mounted on the working surface of the support arc plate 2 of the weight-reducing through rod 1; then, the crossbeam holders 4 at both ends of the support arc plate 2, which are symmetrical to the center of the selected support arc plate 2, are clamped onto the crossbeam 6 of the frame 9 through the crossbeam slots 5. The crossbeam slots 5 fit against the front and rear sides of the crossbeam 6, and the surface of the crossbeam 6 that contacts the bottom of the slots 5 is provided with anti-slip surfaces 7, which can improve the stability of the gear heat-treatment weight-reducing through rod fixture during installation. The structural diagram of the crossbeam 6 is shown below. Figure 5 As shown, the gear heat treatment weight reduction through rod fixture is stably clamped between the two crossbeams 6; finally, the subsequent gear heat treatment operation is carried out according to the actual situation.

Claims

1. A gear heat treatment weight reduction threading tool, comprising a long rod-shaped weight reduction threading rod (1), characterized in that, The side wall of the weight-reducing rod (1) is provided with at least a pair of centrally symmetrical support arc plates (2). The working surface of the support arc plate (2) is in contact with the hole wall of the gear (3). The support arc plate (2) is used to contact and support the hole wall of the inner hole of the gear (3). Two crossbeam holders (4) are fixedly installed at both ends of each pair of supporting arc plates (2). The length direction of the crossbeam holders (4) is arranged along the axial direction. Each crossbeam holder (4) has a crossbeam slot (5) with open ends. The slotting direction of the crossbeam slot (5) is perpendicular to the length direction of the crossbeam holder (4).

2. The gear heat treatment weight reduction through-rod tooling as described in claim 1, characterized in that, The bottoms of the four crossbeam slots (5) located at both ends of the same supporting arc plate (2) are in the same plane, and the plane is set parallel to the central axis of the weight reduction rod (1).

3. The gear heat treatment weight reduction through-rod tooling as described in claim 2, characterized in that, The distance between the plane and the central axis of the weight-reducing through rod (1) is greater than the distance between the working surface of the corresponding support arc plate (2) and the central axis of the weight-reducing through rod (1).

4. The gear heat treatment weight reduction through-rod tooling as described in claim 1, characterized in that, The beam holder (4) is mounted on the beam (6) via the beam slot (5).

5. The gear heat treatment weight reduction through-rod tooling as described in claim 4, characterized in that, An anti-slip surface (7) is provided on the surface of the crossbeam (6) that contacts the bottom of the crossbeam slot (5).

6. The gear heat treatment weight reduction through-rod tooling as described in claim 1, characterized in that, The cross-section of the weight-reducing through rod (1) is a cross-shaped structure, and support arc plates (2) are respectively provided on the two symmetrical ends of the cross-shaped structure.

7. The gear heat treatment weight reduction through-rod tooling as described in claim 6, characterized in that, The cross-shaped structure is provided with multiple reinforcing ribs (8) at the cross intersection.

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