JPS63111123A - Turning equipment for cooling shaft material - Google Patents

Abstract

PURPOSE:To prevent deformation of a long-sized shaft material at the time of rapid cooling by providing a pair of supporting members having two pieces of rolls, constructing one of said rolls as a driving roll and rotating the columnar long-sized shaft supported on the rolls. CONSTITUTION:The roll pairs 2, 3 and 4, 5 and a pair of stoppers 8, 9 are movably provided on a pedestal 10. The roll 2 is the driving roll which is rotated by a motor 6. The rolls 2, 3 (likewise 4, 5) are movably provided on the supporting members 12 in such a manner that the spacing between the centers thereof can be adjusted. The columnar long-sized shaft 1 which is subjected to a heating treatment is first imposed on the roll pairs 2, 3 and 4, 5 adjusted in the position according to the diameter and length of said shaft, then the stoppers 8, 9 are slightly spaced from the shaft 1 and are fixed to the pedestal 10. The roll 2 is then rotated by the motor 6 via a stepless speed change type driving means consisting of sprockets 14-16, chains 7, 20, a connecting rod 11, etc., to rotate the roll 2 thereby to rotate the shaft 1. The entire part is immersed into a hardening medium, etc., of a liquid tank and is thereby subjected to a rapid cooling treatment.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a turning device for cooling a long cylindrical shaft material such as steel material.

Conventional technology In the past, long shaft materials such as heated steel materials were quenched, etc.
In the case of rapid cooling, a cooling device is generally used in which the heated elongated shaft material is supported by a support member and is immersed in a medium such as a quenching medium.

Problems to be Solved by the Invention However, the longer the length of the long shaft material and the greater its weight, the more it bends around the support member and is cooled in that state. There was a problem. Conventionally, there has been no effective cooling device for rapidly cooling cylindrical long shaft materials such as steel materials that can solve this problem. The present invention has been made in view of this problem.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a cooling turning device that prevents deformation of a long cylindrical shaft material such as steel material during rapid cooling.

Means for Solving the Problems As a result of intensive study, the inventor provided a pair of rolls as supporting members for the cylindrical long shaft material,
One of the rolls is rotated as a driving roll,
The inventors have discovered that the above object can be achieved by rotating a cylindrical long shaft material supported on a roll, and have completed the present invention.

The turning device for cooling a cylindrical long shaft material of the present invention will be explained with reference to FIGS. 1 to 3 corresponding to embodiments. A turning device for cooling a cylindrical long shaft material has a support member having two rolls 2 and 3 for supporting a cylindrical long shaft 1 fixedly mounted on a base 10, and a turning device for cooling a long cylindrical shaft material. A support member having two rolls 4 and 5 for supporting the cylindrical shaft 1 is movably mounted and further includes a pair of stoppers 8 and 9.
is movably installed. Among the rolls, the roll 2 is a drive roll, and its rotational speed can be freely set by a continuously variable speed drive mechanism using a motor 6 as a power source.

Operation The long cylindrical shaft material 1 to be quenched is supported on a total of four rolls in the -pair of support members, and the long cylindrical shaft material is rotated by rotating the drive roll 2 by the motor 6. . While rotating the cylindrical long shaft material 1, the entire cooling turning device is immersed in a liquid bath, for example, an oil bath, by means not shown, thereby rapidly cooling the cylindrical long shaft material. According to the cooling turning device of the present invention,
Since the cylindrical long shaft material is rapidly cooled while rotating, it does not undergo deformation.

Embodiment An embodiment of the present invention will be explained with reference to FIGS. 1 to 3. FIG. 1 is a front view of a turning device for cooling a cylindrical long shaft material of the present invention, FIG. 2 is a side view showing a partial cross section, and FIG. 3 is another side view. In the figure, 1 is a cylindrical long shaft material to be cooled, and rolls 2.3.4
and 5. Rolls 2 and 3 are each supported by a support member 12, and rolls 4 and 5 are
Each is movably attached to the base 10 by a support member 13. Roll 2 of these rolls is a driving roll, and one end of the mounting shaft of roll 2 has a
A sprocket 14 is attached. Also, roll 2
and 3 are movably supported on the support member 12 so that the distance between their centers can be adjusted. Similarly, the rolls 4 and 5 are movably supported on the support member 13 so that the distance between their centers can be adjusted.

8 and 9 are stoppers that restrict movement of the cylindrical long shaft, and are movably mounted on the base 10. Reference numeral 6 denotes a motor for driving the roll 2, which is placed on the support 21. A continuously variable speed drive means is employed so that the rotational speed of the roll 2 can be set freely. A chain 7 is suspended between a sprocket 15 attached to the rotating shaft and a sprocket 16 attached to one end of the connecting rod 11. The connecting rod 11 is connected to a bearing 18 attached to a substrate on the pedestal 10.
and 19, and the sprocket 16 is attached to one end, and the sprocket 17 is attached to the other end. Further, a chain 20 is suspended between the sprocket 14 and the sprocket 17. Furthermore, the pedestal 10 and each support member 12 and 1
3 has a pinhole for fixing each support member in a predetermined position, and a pin 22 is inserted into the hole.

In the cooling turning device having the above configuration, first, the heat-treated cylindrical long shaft material 1 is placed on the base 10.
The support members 12 and 13 set in position above rest on the rolls 2.3.4 and 5. In this case, the distance between the centers of the rolls 2 and 3 and the distance between the centers of the rolls 4 and 5 are adjusted in advance according to the diameter of the cylindrical long shaft material to be processed.
2 and the support member 13 are set in advance at predetermined positions depending on the length of the cylindrical long shaft material. The stoppers 86 and 9 are fixed on the pedestal 10 with some distance between them and the cylindrical long shaft member 1.

Next, the motor 6 is rotated. The rotation of the motor is controlled by the sprocket 15 and connecting rod 1 attached to the motor.
It is transmitted to the connecting rod 11 by a chain 7 suspended between a sprocket 16 attached to one end of the connecting rod 11, and is further attached to the rotating shaft of the roll 2 and a sprocket 17 attached to the other end of the connecting rod 11. It is transmitted to the roll 2 by a chain 20 suspended between a sprocket 14 and a sprocket 14. As the rolls 2 rotate, the cylindrical long shaft members placed on each roll rotate.

Next, while rotating the cylindrical long shaft material, the entire cooling turning device is immersed in a liquid bath containing a quenching medium or the like by means not shown to perform a rapid cooling process.

In addition, as the cylindrical long shaft material continues to rotate,
It gradually shifts to one side, but since the stopper is fixed at a predetermined position, its movement is restricted. In this case, in the present invention, a switch IjM'rFr is provided so that when the cylindrical long shaft material contacts the stopper, the rotation direction of the roll 2 is reversed, and the cylindrical long shaft material is reversed. It may be configured to reverse the rotation of the shaft material.

Effects of the Invention Since the cooling turning device of the present invention has the above-described configuration, it becomes possible to immerse the cylindrical long shaft material in the quenching medium while rotating it, for example, during quenching cooling. Therefore, rapid cooling treatment, for example, quenching treatment, can be performed without deforming the cylindrical long shaft material,
In practical terms, the effect is great.

[Brief explanation of the drawing]

FIG. 1 is a front view of an embodiment of the present invention, FIG. 2 is a side view showing a partial sectional view, and FIG. 3 is another side view. 1... Cylindrical long shaft, 2.3.4 and 5...
Roll, 6...Motor, 7...Chain, 8 and 9...Stopper, 10...Pedestal, 11...Connection rod, 12 and 13...Support member, 14.15.16 and 17... Sprocket, 18 and 19... Bearing, 2o... Chain, 21... Support, 22... Pin. Patent applicant Daido Steel Co., Ltd. Agent Patent attorney Tsuyoshi Horabe Figure 2 2゜

Claims (1)

[Claims] (1) A pair of support members having a pair of stoppers and two rolls for supporting a cylindrical elongated shaft material are placed on a pedestal, each of the stoppers and at least one of the support members A turning device for cooling a cylindrical long shaft material, wherein the turning device is movably mounted, and one of the rolls of the support member is a drive roll.