Quenching equipment is different from other cold processing equipment, and it is composed of power supply, quenching machine, cooling system and quenching system. Horizontal CNC quenching equipment shown in Figure 1. Figure 1 Horizontal CNC quenching equipment Quenching machine adopts suspension structure. The structure is shown in Figure 2. 1. Top 2. Parallel resonant system composed of quenched transformer and capacitor Third, the control mode A lot of data introduce the principle of numerical control, so we won't go into details here. The following only introduces the principle of energy control. 1. Energy control principle According to the data, when the voltage changes ± 5%, the power changes within ± 10%. The relationship between the energy Pt obtained by the workpiece and the hardened layer d is shown in FIG. 3 . Figure 3 Relationship between the energy Pt obtained from the workpiece and the hardened layer d As can be seen from FIG. 3 , S when the power P changes by ±10% is a very small portion and approximates a straight line. If the heating energy is controlled within a certain range, the change of the hardened layer is also minimal. Similarly, as long as the area formed by Pg±ΔPg and tg±Δtg is sufficiently small, the areas of tg±Δtg and Wg±ΔWg are small enough (see FIGS. 4 and 5 ). This can also be verified from mathematical analysis. Because Pg = f(tg), the functional relationship of Wg = f(tg) is a one-to-one correspondence. In the heating process of the workpiece, when the instantaneous power becomes larger for some reason, the heating time is reduced according to a certain rule; otherwise, the time is prolonged. In the control system, the accumulated energy approximate value is controlled within the EFGH deviation band to achieve the purpose of controlling the energy. Of course, different deviation bands can be set for different workpieces, or different deviation bands can be set for the same workpiece according to different quality requirements. That is, the smaller the set deviation band, the higher the quality of the obtained product. Figure 4 Pg = f (tg) curve Note: Pg - Instantaneous power is not fixed, kW; Pg±ΔPg——Instantaneous power variation deviation band, kW Tg - heating time is not fixed, s; Tg ± △ tg - heating time set deviation band, s. Figure 5 Wg = f (tg) curve Note: Wg - energy setting, kW.s; Wg = f (tg) - energy setting deviation band, kW.s. 2. Hardware components The system adopts HNC-2000 industrial control machine manufactured by Huazhong Numerical Control Co., Ltd. and consists of signal detection, open-sky components, servo power driver, AC servo motor, frequency converter, AC motor and industrial control machine. The system hardware components are shown in Figure 6. Figure 6 System hardware components (1) Analog-digital conversion current, voltage, and frequency analog signals are drawn from the intermediate-frequency power source of the thyristor. They are converted into standard 0-10v voltage signals by the A/D conversion module and sent directly to the manual control unit. (2) Process parameters such as the size of the required power in different parts of the workpiece, the heating and quenching time, the number of revolutions of the part, and the exact location of the sensor are all set in code form by the IPC keyboard. (3) The input digital signal enters the artificial control machine through the multiple control input template; the industrial control machine controls the output load change through multiple control output templates. (4) Closed-loop control of trailer movement. Fourth, software composition 1. Control software overall structure The overall structure of the control software is shown in Figure 7. Figure 7 Overall structure of control software 2. basic skills (1) Automatic processing module Reads the human processing code from the file, interprets and executes the code. (2) Program editing module Editing of machining code. (3) Energy control module This module is mainly responsible for energy collection, display and comparison with the energy template deviation band. In the process of processing, if in the heating state, the voltage, current and frequency of the power supply are collected through A/D conversion, and the sampled value is converted into the power value, and this value is compared with the energy template deviation band. (4) Template editing function By collecting the energy data curve, you can edit the upper and lower deviation band, and use the deviation band as a template, or open the existing template and re-edit the editing template. (5) Manual control module This module realizes the status display [machine, power supply] and manual parameter editing and modification. (6) Fault diagnosis module This module realizes self-diagnosis of faults and display of fault causes. 3. Program code M50 part forward M51 parts stop M52 heating start M53 heating stopped M54 quench water switch; G01HS M55 quench water open M56 outer water valve switch M57 water open close M58 valve open M59 valve closed End of M30 program F delay time, unit: 0.1s H output power control code, unit: kw S part rotation speed, unit: r/min Fifth, CNC horizontal induction hardening machine appearance CNC horizontal induction hardening machine appearance shown in Figure 8. Figure 8 Horizontal induction heating quenching machine appearance Sixth, equipment innovation (1) The fully enclosed structure of the quenching machine solves the problem of splashing water. (2) The application of the cable drag chain solves the long distance movement problem of the transformer. (3) The transformer capacitor in the oscillating circuit is integrated to save power. (4) Trailer servo motor drive, accurate positioning, stable speed. (5) Energy control in quenching process, quenching quality is stable. (6) Variable power, variable speed. Can meet the needs of various structural complex parts quenching. (7) fewer instructions, easy programming, easy and flexible to use. (8) Self-diagnostic function provides great convenience for equipment maintenance. (9) For the first time, the mechanical structure used a suspended motion mechanism. Seven, application After the CNC intermediate frequency horizontal quenching machine was successfully developed, it was commissioned with intermediate frequency power supply, water cooling system and power supply system. In January 2004, it was put into production and use. Up to now, nearly 100 kinds of auto parts have been produced by trial production of new products. Trial parts before the end of March are shown in the table below. Induction Heating Test and Trial Parts List of CNC Intermediate Frequency Quenching Machine Tool Note: The operation shows that the use of stable performance, reliable quality quenching. VIII. Economic and Social Benefits 1. Economic benefits (1) Combining energy control and CNC high technology to control quenching quality of parts is the first in the country to improve the quality of quenching; on the other hand, it can change the power during the process of heating and quenching, which can greatly shorten the cycle of process testing in new product development work. Guarantee the progress of trial production to ensure the stability of quenching quality in the production process. (2) Integrate the quenched transformer and the electric heating capacitor together and reduce the gap of the busbar to 2mm. The electricity saving is obvious, and conservative estimation can improve the efficiency by 8% to 10%. 2. Social benefits Induction heating analog quantity control is changed to digital quantity control, which will produce a qualitative leap for the power supply technology and quenching machine tool control technology, and provide the possibility to catch up with the world advanced level. Especially to ensure the quality of parts quenching creates the conditions. This technology is used for general-purpose quenching equipment. For example, some of these technologies will be transplanted to special quenching machine tools and will have ample room for development. LX Body Kit,Side moulding,Door moulding,Side step,Roof rack,roof rail Guangzhou YS Auto Parts Co.,LTD , https://www.upgradebodykit.com
3. Tank chain 4. Back top 5. Ball screw carriage 6. Quenching tank 7. Bed
Figure 2 Horizontal quenching machine structure diagram 
At present, the induction hardening equipment used in automobile production in the world is gradually developing toward the degree of flexibility. Universal quenching machines are more versatile and feature better. The representative Japanese DKK, Spanish GH, German AEG, multinational EFD products are widely used. Their common feature is that in a quenched machine tool mouth, different parts with different performance requirements can be induction-heated and quenched, and even multi-section variable-speed transmission of the same part can be achieved; computer control technology is used to monitor and display the quenching process and process parameters, tracking In the whole process, the application of numerical control technology is very active and maturing; the computer control becomes the mainstream of control; the main drive adopts AC servo motor to drive, the moving speed is stable and uniform, the positioning accuracy is accurate, and the repeat accuracy is high; the part rotation adopts variable frequency speed regulation and can adapt to many In terms of process requirements, advanced technologies such as ball screw and linear guide rails that represent mechanical transmission technology have been widely adopted; supporting the power supply of quenching machines, quenching machine tools, and induction heating quenching devices for cooling systems have become commonplace. Since the reform and release, although FAW Group has introduced several induction hardening equipment, the most widely used general test equipment in automobile production is still a low-level PLC controlled quenching machine tool. Its low efficiency, poor function, it is difficult to guarantee the quality of quenching. In order to ensure the progress of new automotive product development and make up for the lack of general-purpose quenching machine functions, based on digesting and understanding foreign advanced technologies, after two years of hard work, the Group adopted CNC and energy control technologies to successfully develop and apply directly to production. Functional horizontal CNC quenching machine tool, leading in domestic technology performance, function close to the end of the 20th century from the introduction of GH company level. More than six months of operation shows that the performance is stable and the quality is reliable. First, horizontal CNC quenching equipment