Ultra-thin wall internal gear ring batch carburizing tooling device

Abstract

This utility model belongs to the field of thin-walled gear ring processing technology, and discloses a tooling device for batch carburizing ultra-thin-walled internal gear rings. A coolant passage hole is provided at the center of a flat base; a hanger includes a vertical hanger rod and a disc; one end of the vertical hanger rod is connected to the disc, which has multiple coolant passage holes evenly distributed on it; the disc is located below the flat base, and the vertical hanger rod passes through the coolant passage hole at the center of the flat base; a coolant passage hole is provided at the center of an upper pressure plate, and multiple through holes are evenly distributed around its circumference; one end of a fixing screw is threaded to the flat base, and the other end passes through the through hole of the upper pressure plate and is fixed by a locking nut; multiple thin-walled gear rings are installed and fixed between the upper pressure plate and the flat base, and the flat base and the upper pressure plate are tightened by the fixing screw and the locking nut. This device effectively controls the amount of carburizing deformation, ensuring the subsequent grinding allowance, and successfully solves the quality problem of excessive carburizing deformation and insufficient grinding allowance for thin-walled gear rings.

Description

Technical Field

[0001] This utility model relates to the field of thin-walled gear ring processing technology, and in particular to a batch carburizing fixture for ultra-thin-walled internal gear rings. Background Technology

[0002] Ultra-thin-walled internal gear ring parts require carburizing heat treatment. During the carburizing process, the deformation is significant, and the parts are extremely prone to exceeding the tolerance and failing to be ground properly, resulting in scrap. It is necessary to develop a batch carburizing tooling device for ultra-thin-walled internal gear rings as soon as possible to solve the above problems.

[0003] Combination Figure 2 Previously, parts such as gears and gear rings were directly suspended in the carburizing furnace by a boom (solid disc at the bottom) for carburizing. However, the ultra-thin-walled parts were extremely prone to deformation and exceeding tolerances, so a new tooling structure was needed to solve the above problems. Utility Model Content

[0004] This invention proposes a batch carburizing fixture for ultra-thin-walled internal gear rings, which changes the structure of the original carburizing fixtures for gears, gear rings, etc. It can better control the deformation of ultra-thin-walled gear rings and realize batch carburizing of multiple pieces. It has the advantages of compact structure, safety and reliability, simplicity and efficiency.

[0005] The technical solution of this utility model is as follows: a batch carburizing fixture for ultra-thin wall internal gear rings, including a flat base 1, a thin-walled gear ring 2, an upper pressure iron 3, a hanger 4, a fixing screw 5, and a locking nut 6;

[0006] A coolant passage hole is provided in the center of the flat base 1 to ensure the cooling effect of the inner teeth of the thin-walled gear ring 2;

[0007] The hanger 4 includes a vertical hanger rod and a disc; one end of the vertical hanger rod is connected to the disc, and the disc has multiple coolant passage holes evenly distributed on it; the disc is located below the flat plate base 1, and the vertical hanger rod passes through the coolant passage hole in the center of the flat plate base 1;

[0008] The upper pressure iron 3 has a coolant passage hole in the center and multiple through holes evenly distributed around its circumference; one end of the fixing screw 5 is threaded to the flat plate base 1, and the other end passes through the through hole of the upper pressure iron 3 and is fixed by the locking nut 6;

[0009] Multiple thin-walled gear rings 2 are installed and fixed between the upper pressure iron 3 and the flat base 1. The flat base 1 and the upper pressure iron 3 are tightened by fixing screws 5 and locking nuts 6.

[0010] The beneficial effects of this invention are as follows: It provides a batch carburizing fixture for ultra-thin-walled internal gear rings, enabling batch carburizing of multiple parts with high efficiency and reduced cost. The amount of carburizing deformation is effectively controlled, ensuring sufficient grinding allowance in subsequent processes, thus successfully solving the quality problem of excessive carburizing deformation and insufficient grinding allowance for thin-walled gear rings. Attached Figure Description

[0011] Figure 1 Schematic diagram of a tooling device for batch carburizing of ultra-thin wall internal gear rings.

[0012] Figure 2 This is a schematic diagram of an existing carburizing process;

[0013] Figure 3 This is a schematic diagram of a tablet base;

[0014] Figure 4 This is a schematic diagram of the hanger;

[0015] Figure 5 This is a schematic diagram showing the relative positions of the flat base and the upper pressure plate.

[0016] Figure 6 This is a schematic diagram of the upper pressure iron.

[0017] In the diagram: 1-flat base; 2-thin-walled gear ring; 3-upper pressure iron; 4-hanger; 5-fixing screw; 6-locking nut. Detailed Implementation

[0018] A batch carburizing fixture for ultra-thin-walled internal gear rings includes a flat base 1, a thin-walled gear ring 2, an upper pressure iron 3, a hanger 4, a fixing screw 5, and a locking nut 6.

[0019] A coolant passage hole is provided in the center of the flat base 1 to ensure the cooling effect of the inner teeth of the thin-walled gear ring 2;

[0020] The hanger 4 includes a vertical hanger rod and a disc; one end of the vertical hanger rod is connected to the disc, and the disc has multiple coolant passage holes evenly distributed on it; the disc is located below the flat plate base 1, and the vertical hanger rod passes through the coolant passage hole in the center of the flat plate base 1;

[0021] The upper pressure iron 3 has a coolant passage hole in the center and multiple through holes evenly distributed around its circumference; one end of the fixing screw 5 is threaded to the flat plate base 1, and the other end passes through the through hole of the upper pressure iron 3 and is fixed by the locking nut 6;

[0022] Multiple thin-walled gear rings 2 are installed and fixed between the upper pressure iron 3 and the flat base 1. The flat base 1 and the upper pressure iron 3 are tightened by fixing screws 5 and locking nuts 6.

[0023] As one embodiment, the batch carburizing fixture for ultra-thin-walled internal gear rings consists of a flat base 1, a thin-walled gear ring 2, an upper pressure iron 3, a hanger 4, a fixing screw 5, and a locking nut 6. The specific implementation is as follows: Figure 1 As shown.

[0024] The flat base 1 is made of low-carbon steel, with a 300mm diameter coolant passage in the center to ensure effective cooling of the internal teeth of the thin-walled gear ring 2. Specific implementation details are as follows: Figure 3 As shown.

[0025] The hanger 4 of this device is welded from low-carbon steel, with four 200mm diameter coolant passage holes evenly distributed on the lower disc. The specific implementation is as follows... Figure 4 As shown.

[0026] This device fixes multiple thin-walled gear rings 2, and uses fixing screws 5 and locking nuts 6 to press the flat base 1 and the upper pressure iron 3 together. The specific implementation is as follows: Figure 5 As shown.

[0027] The upper pressure iron 3 of this device is made of low-carbon steel. Six evenly distributed 32mm diameter through holes are used to allow the fixing screw 5 to pass through. A 350mm diameter coolant passage is located in the center to ensure effective cooling of the internal teeth of the thin-walled gear ring 2. The specific implementation is as follows... Figure 6 As shown.

Claims

1. A tooling device for batch carburizing ultra-thin-walled internal gear rings, characterized in that, The ultra-thin-walled internal gear ring batch carburizing tooling device includes a flat base (1), a thin-walled gear ring (2), an upper pressure iron (3), a hanger (4), a fixing screw (5), and a locking nut (6). A coolant passage hole is provided in the center of the flat base (1) to ensure the cooling effect of the inner teeth of the thin-walled gear ring (2); The hanger (4) includes a vertical hanger rod and a disc; one end of the vertical hanger rod is connected to the disc, and the disc is evenly distributed with multiple coolant passage holes; the disc is located below the flat plate base (1), and the vertical hanger rod passes through the coolant passage hole in the center of the flat plate base (1); The upper pressure iron (3) has a coolant passage hole in the center and multiple through holes evenly distributed around the circumference; one end of the fixing screw (5) is threaded to the flat plate base (1), and the other end passes through the through hole of the upper pressure iron (3) and is fixed by the locking nut (6); Multiple thin-walled gear rings (2) are installed and fixed between the upper pressure iron (3) and the flat base (1). The flat base (1) and the upper pressure iron (3) are tightened by fixing screws (5) and locking nuts (6).

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