CN218666142U

CN218666142U - Curve groove induction quenching device for numerical control quenching machine tool

Info

Publication number: CN218666142U
Application number: CN202223324411.5U
Authority: CN
Inventors: 郜聆羽; 罗宏松; 王耀武; 黑玉龙; 刘炳鑫; 江坤; 李云峰; 方锐; 陈立娜; 王洪亮; 黄英; 庄玉文; 孙艳吉; 王佳琦; 褚锦辉; 李瑞凯; 方斌
Original assignee: Qiqihar Heping Heavy Industry Group Co ltd
Current assignee: Qiqihar Heping Heavy Industry Group Co ltd
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2023-03-21
Anticipated expiration: 2032-12-12

Abstract

The utility model discloses a curve groove induction quenching device for a numerical control quenching machine tool, which comprises a fixed connection device, a cooling circulation device and a heating quenching device, wherein the cooling circulation device is arranged between the top fixed connection device and the bottom heating quenching device. The fixed connecting device comprises a connecting plate, a current-conducting plate and a partition plate A, wherein the connecting plate on each side is welded with the current-conducting plate and is symmetrical; the cooling circulation device comprises a water pipe I, a water pipe II and a partition plate B, wherein the water pipe I and the water pipe II are welded outside respective current-conducting plates and at the bottom of the connecting plate; the heating quenching device comprises a sensing body, a medium liquid spraying pipe and a magnetizer, wherein the medium liquid spraying pipe is welded on one side of the sensing body, the sensing body is welded with the bottoms of the water pipe I and the water pipe II, and the magnetizer is embedded on the rear side of the sensing body. The utility model discloses make quenching heating, cooling device combine together, solved the problem of easily appearing and the part is interfered such as quenching curve walking, rotation, when satisfying continuous scanning heating temperature, guarantee quenching cooling angle, cooling time.

Description

Curve groove induction quenching device for numerical control quenching machine tool

Technical Field

The utility model relates to a curve groove induction quenching device for a numerical control quenching machine tool, belonging to the technical field of heat treatment.

Background

In engineering application, in order to ensure that the core of the part has good toughness, the outer surface of the part also has certain wear resistance, and therefore, the surface induction quenching process is selected to improve the local surface hardness of the workpiece. Some parts need to be matched with shaft rod parts for use to meet the requirement of the motion trail of the parts, and when the parts are used, the shaft parts slide in the curve grooves of the parts, so that the two sides of the curve grooves need higher surface hardness to meet the requirement of the wear resistance. In the traditional induction heat treatment quenching process, a one-time heating quenching mode is often adopted for a curve groove, or a workpiece is fixed by an inductor and is manually moved and rotated for continuous quenching, and the workpiece number is easy to have the following problems in the traditional production process: 1) When the curve groove is heated and quenched at one time, the heating area is large, the required equipment power is high, the temperature rise time of the part is long, the penetration depth is large, and if the side wall of the part is thin, large deformation can be generated; 2) The one-time heating quenching is limited by the shape of the curve groove, the inductor is difficult to manufacture and cannot be completely attached to the curve, and the distance between the inductor and a workpiece is uneven, so that the quenching hardness of the curve groove is uneven, and the use is influenced; 3) The method adopts a one-time heating quenching mode, is integral heating, and is easy to generate overheating and overburning phenomena due to the fact that the heating temperature of individual parts is too high due to the sharp angle effect in order to ensure that each part is heated to the phase change transition temperature; 4) When the workpiece is heated and quenched once, the workpiece is required to be immersed into a quenching medium or sprayed with the quenching medium after being heated to the quenching temperature, and the quenching time of each part is different, so that the condition of insufficient quenching cooling is easy to occur; 5) When the continuous heating quenching is adopted, if the traditional manual operation is adopted, the inductor (comprising the quenching liquid spray head) is fixed, the workpiece is manually moved and rotated, the moving speed, the rotating angle and the rotating speed cannot be accurately controlled, the phenomenon of uneven hardness is easy to occur, and the contact and ignition between the inductor and the part are easy to occur due to carelessness, so that the part is scrapped; 6) When the numerical control machine tool is used for continuous heating and quenching, the inductor, the quenching cooling spraying system and the part need to move and rotate relatively, and if the inductor is improperly designed, the phenomenon that the inductor contacts with a workpiece and is ignited easily occurs when the inductor rotates; the spraying system and the workpiece have improper relative spraying angle, and the phenomenon of unqualified hardness is easy to occur. The traditional disposable induction heating quenching device has the advantages of large heating area, low part heating temperature, non-uniform heat, long heating time, large part deformation and incapability of ensuring the quality of parts.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a curve groove induction quenching device for a numerical control quenching machine tool, which adopts the design scheme that quenching heating and cooling devices are combined, solves the problem of interference with parts, such as the walking and rotation of a quenching curve, and guarantees the quenching cooling angle and the cooling time and the maximum product quality when the continuous scanning heating temperature is satisfied.

The utility model provides a technical scheme that its technical problem adopted is: a curve groove induction quenching device for a numerical control quenching machine tool comprises a fixed connecting device, a cooling circulating device and a heating quenching device, wherein the fixed connecting device is positioned at the topmost part, the heating quenching device is positioned at the bottommost part, and the cooling circulating device is positioned between the connecting device and the heating quenching device and is connected with the connecting device and the heating quenching device; the fixed connecting device comprises two connecting plates, two current-conducting plates and a partition plate A, wherein the horizontal connecting plate on each side and the vertical current-conducting plate are welded up and down, the two groups of welded plate bodies are symmetrically arranged, and the partition plate A is fixed between the two current-conducting plates; the cooling circulation device comprises a water pipe I, a water pipe II and a partition plate B, wherein part of pipe bodies of horizontal ends and vertical ends of the L-shaped water pipe I and the water pipe II are respectively welded to the outer part of the side conducting plate and the bottom of the connecting plate, and the partition plate B is clamped and fixed between the water pipe I and the water pipe II; the heating quenching device comprises a sensing body, a medium liquid spraying pipe and a magnetizer, wherein the medium liquid spraying pipe is welded on one side of the U-shaped sensing body, two ends of the upper part of the sensing body are respectively welded with the bottoms of the water through pipe I and the water through pipe II, and the magnetizer is embedded on the rear sides of the medium liquid spraying pipe and the sensing body; the side surface of the lower end of the medium liquid spraying pipe is provided with a plurality of spraying holes which are evenly spaced, and the spraying holes and the parts form a 45-degree angle.

The utility model has the advantages that: the utility model solves the problems of deformation, uneven quenching hardness, overheating, overburning, unqualified hardness and the like which are easily caused by heating and quenching of the curved groove, avoids human factors influencing processing in manual quenching operation of operators, effectively improves the quality of parts, ensures the production progress and liberates labor force; the problem that the quenching curve is easy to interfere with parts in walking, rotating and the like is solved, and the whole heating and quenching process can be completed only by one set of device; the heating device can be popularized to the device design similar to induction heat treatment of workpieces, and plays an important role in ensuring quality, saving cost and improving production efficiency; the curve groove induction quenching device for the numerical control quenching machine tool meets the process requirements, greatly improves the product quality, meets the production requirements of batch production, has high repeatability, high production efficiency, small manufacturing difficulty and strong operability, and is successfully applied to a plurality of products of artillery parts.

Drawings

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a left side view of fig. 1.

Fig. 3 is a schematic view of fig. 2 taken along line a-a.

FIG. 4 is a schematic view of the circulation of the quenching liquid spraying system of the present invention.

Fig. 5 is a schematic diagram of the cooling system cycle of the present invention.

Fig. 6 is a schematic view of the quenching process of the present invention.

Figure 7 is a schematic view of a curved slot feature.

Fig. 8 is a schematic view along the direction C-C of fig. 7.

Reference numbers in the figures:

1. the device comprises a fixed connecting device, 101, a connecting plate, 102, a conductive plate, 103, partition plates A,2, a cooling circulating device, 201, water pipes I and 202, water pipes II and 203, partition plates B and 3, a heating quenching device, 301, a sensing body, 302, a medium liquid spraying pipe, 3021, spraying holes, 303, a magnetizer, 4, a bolt-nut gasket group, 5 and a fixed clamp belt.

Detailed Description

As shown in fig. 1-8, a curve groove induction quenching device for a numerical control quenching machine tool comprises a fixed connecting device 1, a cooling circulating device 2 and a heating quenching device 3, wherein the fixed connecting device 1 is positioned at the topmost part, the heating quenching device 3 is positioned at the bottommost part, and the cooling circulating device 2 is positioned between and connected with the connecting device 1 and the heating quenching device 3; the fixed connection device 1 comprises two connection plates 101, two current-conducting plates 102 and two partition plates A103, wherein the connection plates 101 and the two current-conducting plates 102 are arranged in a vertical direction, the connection plates 101 in the horizontal direction on each side are fixed with the current-conducting plates 102 in the vertical direction in a vertical welding mode, the two groups of welded plate bodies are symmetrically arranged, the welding wires are made of red copper, and the partition plates A103 in the vertical direction are located between the current-conducting plates 102 on the two sides and are fixedly connected through bolt and nut gasket groups 4; the cooling circulation device 2 comprises a water pipe I201, a water pipe II 202 and a partition plate B203, wherein the water pipe I201 and the water pipe II 202 are L-shaped pipe bodies, the upper half pipe bodies of the horizontal end and the vertical end of the water pipe I201 and the water pipe II 202 are respectively welded to the outer part of the conductive plate 102 on the respective side and the bottom of the connecting plate 101 by red copper welding wires, and the partition plate B203 is clamped between the water pipe I201 and the water pipe II 202 and is bound and fixed by a plastic fixing clamp belt 5; the heating quenching device 3 comprises a sensing body 301, a medium liquid spraying pipe 302 and a magnetizer 303, wherein the medium liquid spraying pipe 302 is welded on one side of the U-shaped sensing body 301 by using red copper welding wires, two ends of the upper part of the sensing body 301 are respectively and firmly welded on the bottoms of the water through pipe I201 and the water through pipe II 202 by using red copper welding wires to ensure that the water does not leak, and the magnetizer 303 is embedded on the rear sides of the medium liquid spraying pipe 302 and the sensing body 301 by using glue; the side surface of the lower end of the medium liquid spray pipe 302 is provided with a plurality of spray holes 3021 which are evenly spaced in the vertical direction, and the spray holes 3021 and the parts form a 45-degree angle.

The cooling circulating device 2 is internally communicated with cooling circulating water while connecting the fixed connecting device 1 with the heating quenching device 3, so that the temperature reduction and cooling of the device are completed; the heating and quenching device 3 generates an alternating magnetic field to the part through alternating current, carries out induction heating and quenching cooling processes to the part, and is matched with a numerical control quenching machine tool to rotate and ensure a quenching angle to complete the quenching process.

The connecting plate 101 is a part for connecting the quenching device with an output transformer of machine tool equipment and drives the quenching device to move and rotate along a track, the numerical control quenching machine tool inputs electric parameters to the whole quenching device through the connecting plate 101 and the conductive plate 102, the connecting plate 101 and the conductive plate 102 are matched and fixed with the machine tool in size, a red copper welding wire is adopted for welding, and the welding position is firm and smooth; the partition board A103 is made of insulating plastic, so that the two sets of welded board bodies are insulated from each other, and short circuit is prevented.

The upper end of the cooling circulation device 2 is a cooling circulation water inlet/outlet end, the lower end is connected with the heating quenching device 3, the supply of cooling circulation water is realized, a water pipe I201, a water pipe II 202 and an inducing body 301 which form a cooling system are all made of red copper square pipes with the wall thickness of 1mm, one ends of the water pipe I201 and the water pipe II 202 are all universal pipe joints, when the device is used, cooling water is introduced, the device is cooled in the heating process, the cooling water enters from the water pipe I201 or the water pipe II 202 at one end, flows through the inducing body 301, and finally flows out from the water pipe I201 or the water pipe II 202 at the other end, the temperatures of the conductive plate 102 and the connecting plate 101 can be reduced while the inducing body 301 is cooled, current conduction is completed, the heating quenching device 3 adopts square copper pipes to increase the area of an electromagnetic field, the inducing body 301 generates an alternating magnetic field to heat parts, the heating angle is ensured by rotation, and the heating time is controlled by adjusting the moving speed; the copper pipe of the medium spray pipe 302 is internally provided with a quenching cooling medium (both organic quenching liquid and inorganic quenching liquid), the upper end of the medium spray pipe 302 as a quenching liquid spray system is a red copper round pipe, the lower end of the medium spray pipe is a red copper square pipe, the side surface of the medium spray pipe is additionally provided with a spray hole 3021 for cooling parts, during quenching cooling, the quenching liquid enters from the upper end of the medium spray pipe 302 and is sprayed out from the spray hole 3021, the spray hole 3021 and the parts are 45 degrees, the spray angle and effect of the parts are ensured, the ferrite magnetizer 303 is embedded on the inductance applying body 301, the magnetic force lines are ensured to be distributed near the parts, and the heating efficiency is improved.

Because the principle of induction heat treatment is electromagnetic heating, in order to ensure that the device is not inductively heated in the use process, the material of the device is red copper, the influence on the device caused by an induction magnetic field can be prevented, the deformation phenomenon of the device caused by heat generation is avoided, and the corrosion resistance is better.

The using method comprises the following steps:

1) Mounting a connecting plate 101 of the device on a numerical control quenching machine tool clamping plate and fixing the connecting plate, connecting circulating water and quenching liquid of a cooling system, compiling a motion curve of the quenching device according to curve groove curve data, adjusting the distance between the device and a curved surface and the rotation angle of the device during quenching according to the radian, the angle and the like of the quenching curved surface of a part, and ensuring the heating and cooling directions;

2) After the quenching curve is determined, the heating power and the heating speed of each part are adjusted to achieve the heating and cooling effect;

3) And carrying out heating quenching on the curved groove, finishing induction heating on the part by the sensing body 301 in the motion process to enable the part to reach the austenitizing temperature, then carrying out quenching cooling on the medium spray liquid to finish the quenching process, wherein the components and the concentration of the quenching liquid can be automatically adjusted.

By adopting the curve groove induction quenching device, the heating temperature requirement can be met by lower equipment output power due to continuous heating and quenching and smaller heating area, the heating time at the same position is shorter, the heat penetration depth is moderate, and the part deformation is reduced; the bottom of the sensing body 301 of the quenching device is designed to be an arc-shaped curved surface, can be moved and rotated in combination with a numerical control program, cannot interfere with a workpiece, can directly complete a heating and quenching process, can also enable the part to be uniformly heated and fully quenched and cooled by adjusting the moving speed, the angle of the part relative to the device, the heating power and the like, has strong controllability in the production process, and reduces the influence of human factors. The set is a general quenching tool of a numerical control quenching machine tool, and the quenching of the curve grooves with different depths can be realized by adjusting the quantity and the positions of the magnetizer and the water spray holes; different parts are produced by using different numbers of water spray holes and magnetizers 303, and even if the production loss occurs, only the inductor 301 and the magnetizer 303 need to be replaced, so that the manufacturing cost is low; since the principle of induction heat treatment is electromagnetic heating, the material of the device is selected to be red copper.

Claims

1. The utility model provides a curve groove induction hardening device for numerical control quenching machine tool which characterized in that: the device comprises a fixed connecting device (1), a cooling circulating device (2) and a heating quenching device (3), wherein the fixed connecting device (1) is located at the topmost part, the heating quenching device (3) is located at the bottommost part, and the cooling circulating device (2) is arranged between the connecting device (1) and the heating quenching device (3) and is connected with the connecting device (1) and the heating quenching device (3).

2. The curved groove induction hardening device for the numerical control hardening machine tool according to claim 1, characterized in that: the fixed connection device (1) comprises two connecting plates (101), two conductive plates (102) and two partition plates A (103), the horizontal connecting plate (101) and the vertical conductive plate (102) on each side are welded up and down, the two welded plate bodies are symmetrically arranged, and the partition plates A (103) in the vertical direction are fixedly connected between the conductive plates (102) on the two sides.

3. The curved groove induction hardening device for the numerical control hardening machine tool according to claim 1, characterized in that: the cooling circulation device (2) comprises a water service pipe I (201), a water service pipe II (202) and a partition plate B (203), wherein the water service pipe I (201) and the water service pipe II (202) are L-shaped pipe bodies, the horizontal ends and the vertical upper half pipe bodies of the water service pipe I (201) and the water service pipe II (202) are respectively welded to the outer portion of a side conducting plate (102) and the bottom of a connecting plate (101), and the partition plate B (203) is clamped between the water service pipe I (201) and the water service pipe II (202).

4. The curved groove induction hardening device for the numerical control hardening machine tool according to claim 1 or 3, characterized in that: the heating quenching device (3) comprises a sensing body (301), a medium liquid spraying pipe (302) and a magnetizer (303), the medium liquid spraying pipe (302) is welded on one side of the sensing body (301), two upper ends of the U-shaped sensing body (301) are respectively welded on the bottoms of the water pipe I (201) and the water pipe II (202), and the magnetizer (303) is embedded on the rear sides of the medium liquid spraying pipe (302) and the sensing body (301).

5. The curved groove induction hardening device for the numerical control quenching machine tool according to claim 4, characterized in that: the side surface of the lower end of the medium liquid spray pipe (302) is provided with a plurality of uniformly spaced spray holes (3021), and the spray holes (3021) and parts form an angle of 45 degrees.