KR20030073483A - Production heat-treatment progress apparatus of industrial machinery shaft and track pin - Google Patents

Abstract

PURPOSE: A production heat-treatment process apparatus of industrial machinery shaft or track pin is provided which is automatically controlled by electrical relay circuit without centering of pin or shaft during the production heat-treatment process and heat treats the heat treated product by horizontally quenching a heat treated product. CONSTITUTION: The production heat-treatment process apparatus of the industrial machinery shaft (shaft without stepped profile) or heavy machinery track pin comprises an airlift means(20) for transporting the shaft or track pin(10); a hydraulic cylinder means(50) for pushing the shaft or track pin to the high frequency heat treater means if the shaft or track pin are rested on rotation rollers(40); a high frequency heat treater means(30) for high frequency heat treating the shaft or track pin; and a cooler means(60) for cooling the heat treated shaft or track pin, wherein the hydraulic cylinder, airlift means and high frequency heat treater are electrically connected to control box(70) so that they are controlled by the control box.

Description

Production heat-treatment progress apparatus of industrial machinery shaft and track pin}

The present invention relates to a heat treatment process for producing parts (orbital pins and shafts) used in the field of industrial machinery and heavy equipment, and more particularly, to the pins and shafts during industrial machine shafts (but without shafts) and heavy equipment track pin heat treatment process. It does not need to hold a center of gravity, and is automatically controlled by an electrical relay circuit, and an industrial machine shaft (however, a shaft without a stage) and a heavy equipment track pin heat treatment process method for heat-treating heat treated products by horizontal type.

In the conventional center-based vertical process, when the hardening of the outer diameter is required, the industrial machine shaft (but not the shaft) and the heavy equipment track pin are quenched by one type and recovered by manual after high frequency heat treatment. There were problems such as the stability of them, the reduction of process production capacity (one person per machine), the increase of defective rate by manual labor, and the increase of production cost.

The present invention has been made to solve the above-mentioned drawbacks, it is not necessary to hold the center of the shaft and pin during the heat treatment process of industrial machinery shaft (but without shaft) and heavy equipment track pin, and by the electrical relay circuit Its purpose is to provide a method of heat treatment for the production of industrial machine shafts (those without shafts) and heavy equipment track pins, which are automatically controlled and heat treated by heat-treating the product horizontally.

The present invention provides an airlift means for carrying a shaft and track pins, a hydraulic cylinder means for pushing the shaft and track pins to a high frequency heat treatment machine when the shaft and track pins are seated on a rotary roller, and heat treatment means for heat-treating the shaft and track pins at high frequency. And a cooler means for cooling the heat-treated shaft and the track pin, and the hydraulic cylinder, the air lift, and the high frequency heat treatment machine are electrically connected to the control box.

1 is a simplified view showing the configuration of the present invention.

2 is a process flow chart of the present invention.

Figure 3 is a photograph of the present invention horizontal type hardening heat treatment machine

<Description of Symbols for Major Parts of Drawings>

10: track pin or shaft 20: air lift

30: high frequency heat treatment machine 40: rotary roller

50: hydraulic cylinder 60: cooler

70: control box

When described in detail with reference to the accompanying drawings, the configuration and the operation of the embodiment of the present invention to achieve the object as described above and to perform the task for eliminating the conventional drawbacks.

Figure 1 is a simplified view showing the configuration of the present invention, Figure 2 is a process flow chart of the present invention, Figure 3 is a photograph of the present invention the horizontal type heat treatment heat treatment machine,

In order to understand the heat treatment method according to the present invention, a track pin, which is one of heavy machinery undercarriage parts, will be described as an example.

Heavy-duty track pin is installed on the track and rolls under high load. Therefore, it is not only able to withstand high loads sufficiently, but also requires super rigidity of material in order to perform the rolling motion smoothly. Specifically, the same hardness as the hardness and the inner diameter of the outer diameter should be maintained, which requires proper heat treatment of the inner and outer diameters.

The present invention in the industrial machinery shaft (but not the shaft) and heavy equipment track pin production heat treatment process apparatus,

Air lift 20 means for transporting the track pin 10, the hydraulic cylinder 50 means for pushing the high frequency heat treatment device 30 when the track pin 10 is seated on the rotary roller 40, and the constant track It comprises a heat treatment device 30 means for heat-treating the fin at high frequency, and a cooler 60 means for cooling the heat-treated track pin.

The hydraulic cylinder 50, the air lift 20, and the high frequency heat treatment device 30 are controlled by the control box 70 and the electrical system.

In particular, the present invention heat treatment of the track pin at a high frequency (850 ℃ ~ 880 ℃) by the linear motion of the cylinder can be controlled by the automatic relay circuit by the electrical device, the roller is rotated on the worktable where the track pin is loaded It eliminates the need to align track pin centers precisely, reducing unnecessary processes.

The present invention is a hydraulic cylinder, the step of preparing the rotary roller and the track pin is subjected to heat treatment, the track pin is automatically pushed by the linear motion of the hydraulic cylinder by the limit sense electrically connected to the control box when the track roller is seated on the rotary roller and the high-frequency track The cycle of the fins (holding time: 2 / sec) and the cylinder are retracted / positioned after the heating stops, completing the one-cycle heat treatment process. By the reciprocating cycle as described above it is possible to automate the heat treatment of the shaft for industrial machinery and heavy equipment track pins. In addition, automation of the heat treatment process can bring about improved heat treatment process, reduced production cost, and improved productivity.

The present invention is not limited to the specific embodiments described above, and those skilled in the art without departing from the gist of the present invention claimed in the claims, various modifications of the form and shape Of course, other changes are within the scope of the claims.

As described above, the present invention provides a rapid and accurate heat treatment operation without the need to align the center of the shaft and pin during the heat treatment process for the production of industrial machinery shaft, (but not shaft) and heavy equipment track pins It can improve productivity, reduce the production cost by shortening the process, improve competitiveness with peers, and improve the safety of workers in the work process. In particular, it is a useful invention that can contribute to the industrial development by providing the optimum heat treatment device that can make the material of the shaft for industrial machinery, (stage without shaft) and heavy equipment track pin parts.

Claims (2)

In the industrial machine shaft, (endless shaft) and heavy equipment track pin production heat treatment process equipment, Air lift means for carrying the shaft and track pins, Hydraulic cylinder means for pushing the shaft and track pins to the high frequency heat treatment machine when seated on the rotary roller, Heater means for heat-treating the shaft and track pins at high frequency, Heated shaft and track An industrial machine shaft, (stage without shaft) and heavy equipment track fin production heat treatment process apparatus, comprising a cooler means for cooling fins. The method of claim 1, The hydraulic cylinder, the air lift, the high frequency heat treatment device is an industrial machine shaft, (but not the end shaft) and heavy equipment track pin production heat treatment process apparatus characterized in that the electrical control is connected to the control box.