CN215887165U

CN215887165U - Surface quenching inductor for semi-shaft sleeve

Info

Publication number: CN215887165U
Application number: CN202121862027.3U
Authority: CN
Inventors: 宁重生; 付国涛; 康国宁; 张宏宇; 唐中正; 武黎明; 马庆坡; 梁栋; 刘正超; 周恩棋
Original assignee: NANYANG HONGYANG FORGING CO Ltd
Current assignee: NANYANG HONGYANG FORGING CO Ltd
Priority date: 2021-08-10
Filing date: 2021-08-10
Publication date: 2022-02-22
Anticipated expiration: 2031-08-10

Abstract

The utility model belongs to the technical field of quenching inductors, and particularly relates to a surface quenching inductor for a half shaft sleeve, which comprises two connecting plates arranged in parallel, two induction coils connected to the end parts of the connecting plates and a cooling system; the two induction coils are coaxial and are arranged at intervals; the cooling system comprises a water cooling passage for cooling the connecting plate and a quenching liquid passage for cooling the induction coil and the quenching workpiece. The induction heating surface quenching induction device is provided with two induction coils, and can heat two parts needing quenching on the semi-axis sleeve simultaneously, so that the technical problems of poor quenching effect and poor product consistency caused by the fact that the conventional surface quenching induction device needs to move workpieces quickly to realize continuous quenching are solved.

Description

Surface quenching inductor for semi-shaft sleeve

Technical Field

The utility model belongs to the technical field of quenching inductors, and particularly relates to a surface quenching inductor for a half shaft sleeve.

Background

The axle sleeve is an important part of the automobile drive axle assembly, and is integrated with the drive axle housing to fix the axial relative positions of the left and right drive wheels and support the frame and the mass of each assembly on the frame. The semi-axis sleeve is a hollow stepped shaft, two independent excircle parts with the same diameter need surface quenching treatment, and a vacancy which does not need quenching exists between the two excircle parts.

The semi-axis sleeve is quenched by a surface quenching inductor which adopts a method of ultrasonic frequency heating surface quenching so as to meet the quenching requirement of the semi-axis sleeve. The currently used surface quenching inductor is an annular continuous heating inductor, and an annular water spraying ring is connected below the inductor for cooling. When the surface quenching inductor is used for quenching the semi-axis sleeve, a workpiece is placed in the inductor, the workpiece rotates and moves from top to bottom under the control of a numerical control program, the inductor sequentially heats and quenches the surfaces of two sections of workpieces, a vacancy without induction heating in the middle is avoided by adopting a rapid moving mode, and continuous heating and water spray quenching cooling are realized by utilizing the moving speed of the workpiece, namely continuous induction heating surface quenching.

However, the above continuous induction surface quenching method has some disadvantages: (1) the continuous heating method can easily cool the whole workpiece surface thoroughly, and the workpiece surface is transformed into quenched martensite, and the quenching stress is larger, so the workpiece after surface quenching needs to be tempered in a tempering furnace; (2) limited by the moving speed of the workpiece and the heating and cooling time, the quenching efficiency is low, and the consistency of the product is poor.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a surface quenching inductor for a half-axle sleeve, which is provided with two induction coils and can heat two parts needing quenching on the half-axle sleeve simultaneously so as to solve the technical problems of poor quenching effect and poor product consistency caused by the fact that the conventional surface quenching inductor needs to move workpieces quickly to realize continuous quenching.

In order to achieve the purpose, the technical scheme of the utility model is as follows: a surface quenching inductor for a half shaft sleeve comprises two connecting plates arranged in parallel, two induction coils connected to the end parts of the connecting plates and a cooling system; the two induction coils are coaxial and are arranged at intervals; the cooling system comprises a water cooling passage for cooling the connecting plate and a quenching liquid passage for cooling the induction coil and the quenching workpiece.

Preferably, the end part of the connecting plate, which is far away from the induction coil, is provided with a mounting plate, and the mounting plate is perpendicular to the connecting plate.

Preferably, an insulating plate is arranged between the two connecting plates.

Preferably, bolts are passed between the two connecting plates and the insulating plate to realize connection.

Preferably, the water cooling passage comprises a water cooling pipeline arranged on the connecting plate and a water inlet and a water outlet arranged on the water cooling pipeline; the first pipeline is in an I-shaped structure with communicated branches.

Preferably, four water inlets and outlets are arranged on one water cooling pipeline.

Preferably, the quenching liquid passage comprises a water spray hole arranged on the inner wall of the induction ring and a quenching liquid inlet and outlet arranged on the outer wall of the induction ring and communicated with the water spray hole.

Preferably, four quenching liquid inlets and outlets are arranged on one induction coil.

The technical scheme adopted by the utility model has the beneficial effects that:

the utility model can simultaneously heat two sections of excircle parts of the semi-axis sleeve which need quenching, thereby saving the trouble of fast moving the workpiece and ensuring the quenching effect and quenching consistency of the workpiece. By arranging the two induction coils which are coaxially arranged and supported by the two connecting plates which are arranged in parallel, a gap exists between the two induction coils, and the gap is consistent with the width of a vacancy between the two excircle parts to be quenched; the half-shaft sleeve penetrates through the two induction rings, so that two excircle parts of the half-shaft sleeve to be quenched are just in the two induction rings, the two induction rings are heated simultaneously, the half-shaft sleeve does not need to move up and down, the quenching effect is guaranteed, and the quenching consistency of a product is guaranteed.

Drawings

FIG. 1 is a schematic top view of an embodiment of a case hardening inductor for a half shaft pipe;

FIG. 2 is a schematic left side view of an embodiment of a case hardening inductor for a half shaft pipe.

In the figures 1 and 2, 1-connecting plate, 11-mounting plate, 2-induction coil, 3-insulating plate, 4-bolt, 5-water cooling channel, 51-water inlet and outlet, 52-water cooling pipeline, 6-quenching liquid channel, 61-quenching liquid inlet and outlet, 62-water spray hole and 7-workpiece.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all embodiments, and do not limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A surface quenching inductor for a half shaft sleeve is used for quenching the half shaft sleeve on an automobile. The semi-axis sleeve is a hollow stepped shaft, two independent excircle parts with the same diameter on the shaft need surface quenching treatment, and a vacancy which does not need quenching exists between the two excircle parts. The quenching inductor is provided with two coaxial induction coils with gaps, the two induction coils correspond to two sections of excircle parts to be quenched on the semi-axis sleeve, the two sections of excircle parts can be heated simultaneously, the trouble that the two sections of excircle parts are heated by rapidly moving a workpiece is eliminated, the quenching effect on the semi-axis sleeve is ensured, and the quenching consistency of the workpiece can be ensured.

The specific embodiment is as follows:

example 1, as shown in fig. 1 and 2, a surface hardening inductor for a half axle sleeve pipe includes a connection plate 1, an induction coil 2, and a water cooling system.

The connecting plates 1 are arranged in two, and the two connecting plates 1 are arranged in parallel and connected together. The connecting plate 1 is used for connecting with a machine tool load.

An induction coil is arranged in the induction coil 2; when alternating current is introduced into the induction coil, an alternating magnetic field with the same frequency as the current is generated around the induction coil, corresponding induced electromotive force is generated in the workpiece 7, induced current, namely eddy current, is formed on the surface of the workpiece 7, and electric energy is converted into heat energy under the action of the resistance of the workpiece 7, so that the workpiece 7 is heated. The induction coils 2 are arranged in two numbers, and the two induction coils 2 are connected to the end parts, far away from the machine tool, of the two connecting plates 1. The two induction coils 2 are coaxially arranged, a gap exists between the two induction coils 2, and the upper and lower width of the gap is consistent with the width of a vacancy between two sections of excircle parts needing quenching on the workpiece 7.

The water cooling system includes a water cooling passage 5 and a quenching liquid passage 6. The water cooling passage 5 is arranged on the connection plate 1 for cooling the connection plate 1. The quenching liquid passage 6 is arranged on the induction coil 2 for cooling the induction coil 2 and the workpiece 7 inside the induction coil.

When the surface quenching inductor for the semi-axis sleeve pipe is used, the workpiece 7 penetrates through the two induction coils 2, and a certain gap exists between the workpiece 7 and the induction coils 2. The positions of the induction coil 2 and the workpiece 7 at the front, back, left and right are adjusted, the switch of the quenching machine tool is started, the induction coil 2 is not moved, and the workpiece 7 rotates at a high speed. Alternating current is introduced into the induction coil 2, so that eddy current is formed on the surface of the workpiece 7, electric energy is converted into heat energy under the action of the resistance of the workpiece 7, the surface temperature of the workpiece 7 rapidly reaches the quenching temperature, and then the cooling system is used for spraying and cooling, so that the workpiece 7 is quenched. The two induction coils 2 simultaneously heat two sections of excircle parts to be quenched on the workpiece 7, the heating efficiency is high, the workpiece 7 does not need to move up and down, the time is saved, and the quenching efficiency is improved; meanwhile, the two induction coils 2 simultaneously heat the two sections of excircle parts to be quenched on the workpiece 7, and simultaneously cool the excircle parts, so that the quenching effect is ensured, and the hardness of the quenched workpiece 7 reaches the standard and has good hardness uniformity.

Further, the end of the connecting plate 1 for connecting to a machine tool is provided with a mounting plate 11. The mounting plate 11 is perpendicular to the connecting plate 1 to facilitate mounting of the connecting plate 1 on a machine tool.

Further, an insulating plate 3 is lined between the two connection plates 1. The insulating board 3 is isolated between two connecting plates 1 to prevent short circuit between two connecting plates 1 when the electric current is introduced.

In this embodiment, the two connecting plates 1 and the insulating plate 3 are connected through the bolts 4 passing through, so that the connection is convenient to detach.

Further, the water cooling passage 5 includes a water cooling pipe 52 and a water inlet/outlet 51. The water-cooling pipelines 52 are arranged on the connecting plate 1 in an I shape, so that the area of the water-cooling pipelines 52 on the connecting plate 1 is increased, and the cooling efficiency is improved. The water cooling pipeline 51 is provided with a plurality of water inlets and water outlets 51, so that the circulation rate of water in the cold water pipeline 52 is ensured, and the cooling effect is improved.

In the present embodiment, four water inlet/outlet ports 51 are provided, two water inlet/outlet ports 51 are provided at the upper end of the water-cooled duct 52, and two water inlet/outlet ports 51 are provided at the lower end of the water-cooled duct 52.

Further, the quenching liquid passage 6 includes water spray holes 62 and a quenching liquid inlet/outlet 61. The water spray holes 62 are provided in the inner wall of the induction coil 2, and are distributed in a plurality. The quenching liquid inlet and outlet 61 is arranged on the outer wall of the induction coil 2, and the quenching liquid inlet and outlet 61 is communicated with the water spray holes 62.

In this embodiment, four quenching liquid inlets and outlets 61 are provided and arranged along the axial direction of the induction coil 2 to ensure the inlet amount of the quenching liquid.

The utility model is described above with reference to the accompanying drawings, it is obvious that the specific implementation of the utility model is not limited by the above-mentioned manner, and it is within the scope of the utility model to adopt various insubstantial modifications of the technical solution of the utility model or to apply the concept and technical solution of the utility model directly to other occasions without modification.

Claims

1. A surface quenching inductor for a half shaft sleeve is characterized by comprising two connecting plates arranged in parallel, two induction coils connected to the end parts of the connecting plates and a cooling system; the two induction coils are coaxial and are arranged at intervals; the cooling system comprises a water cooling passage for cooling the connecting plate and a quenching liquid passage for cooling the induction coil and the quenching workpiece.

2. The case hardening inductor for semi-shaft sleeve as recited in claim 1, wherein said connecting plate has a mounting plate at an end portion thereof remote from said induction coil, said mounting plate being disposed perpendicular to said connecting plate.

3. The case hardening inductor for semi-shaft sleeve as claimed in claim 2, wherein an insulating plate is disposed between two said connecting plates.

4. The case hardening inductor for half shaft pipes according to claim 3, wherein two connection plates and the insulation plate are connected by bolts.

5. The induction hardening surface quenching device for semi-shaft sleeve as claimed in any one of claims 1 to 4, wherein said water cooling channel comprises a water cooling pipe provided on said connection plate and a water inlet and outlet provided on said water cooling pipe; the water cooling pipeline is of an I-shaped structure with all branches communicated.

6. The induction hardening surface hardening sensor for semi-shaft sleeve pipe as set forth in claim 5, wherein said water inlet and outlet ports of one of said water-cooled pipes are provided in four numbers.

7. The induction hardening surface quenching sensor for semi-shaft sleeve as claimed in any one of claims 1 to 4, wherein said quenching liquid passage comprises a water spray hole provided on the inner wall of said induction coil and a quenching liquid inlet and outlet provided on the outer wall of said induction coil and communicating with said water spray hole.

8. The case hardening inductor for semi-shaft sleeve as recited in claim 7, wherein said quenching fluid inlet and outlet of one said induction coil are four.