JPH05750U - Inner surface quenching device - Google Patents

Abstract

(57) [Summary] [Purpose] In an inner peripheral surface quenching device in which the inner peripheral surface of an annular work is immersed in a cooling liquid and the cooling liquid is jetted and quenched from a jacket provided in the cooling liquid, The work elevating device and the work elevating device are not coexistently installed in the cooling liquid, and therefore an object is to provide an inner peripheral surface quenching device having a simple structure. [Constitution] An inner peripheral surface quenching device includes an annular heating coil 10 arranged to face an inner peripheral surface 51 of a work 50, a heating coil elevating device for elevating the heating coil, and a periphery of the work 50. A work supporting member 20 for supporting, a cooling liquid tank 40 containing a cooling liquid L into which the work 50 is lowered and immersed, a work elevating device, and a work supporting member for rotating the work during heating and cooling. The work rotating device to rotate and the cooling liquid on the inner surface 51 of the work 50 immersed in the cooling liquid L.
An annular jacket 30 for injecting L 2 and a jacket elevating device for lowering the jacket 30 into the cooling liquid L and elevating it to the retracted position are provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  In the present invention, the cooling liquid is immersed in the annular work whose inner peripheral surface is heated in the cooling liquid. The present invention relates to an inner peripheral surface quenching device that jets and hardens the inner peripheral surface.

[0002]

[Prior art]

  For example, conventional inner surface quenching equipment for quenching the inner surface of an annular work with a rectangular cross section. In the installation, an annular high-frequency wave machine is arranged so as to face the inner peripheral surface of this work. Heat coil (hereinafter referred to as heating coil indicates high frequency heating coil) and heating coil Heating coil up / down device that raises the coil to the retracted position and lowers it to the heating position. And a work support member that supports the periphery of the workpiece and a cooling liquid in which the work is immersed. Lower the coolant tank installed below the heating coil and the work support member. It is possible to immerse the work in the cooling liquid or to raise the work after quenching above the cooling liquid surface. Work lifting device and work support to rotate the work during heating and cooling. The work rotating device that rotates the holding member and the inner surface of the work immersed in the cooling liquid are cooled. And an annular jacket for injecting the effluent.

[0003]

[Problems to be solved by the device]

  However, such a conventional inner peripheral surface quenching device has the following problems. . That is, the jacket is supported from the bottom of the coolant tank to cool the work just below the work. It is placed in the liquid and is supported from the bottom of the cooling liquid tank. The station is also usually attached to the bottom of the coolant tank. Therefore, the coolant tank Since the jacket and the work lifting device coexist inside, the inner peripheral surface is hardened. The structure was extremely complicated.

[0004]   The present invention was devised in view of the above circumstances, and includes lifting of a jacket and a work. The device and the device are not installed together in the coolant tank, therefore the structure is simple The object is to provide a hard inner surface quenching device.

[0005]

[Means for Solving the Problems]

  In order to solve the above problems, the inner peripheral surface quenching device according to claim 1 is an annular work. In an inner peripheral surface quenching device for quenching the inner peripheral surface of, it is arranged so as to face the inner peripheral surface. Circular high-frequency heating coil, and the high-frequency heating coil, heating position and retreat position Heating coil elevating device that elevates between and, and work support that supports the periphery of the work A member, a cooling liquid tank containing a cooling liquid in which the workpiece is lowered and immersed, and a work Lower the support member to immerse the work in the cooling liquid, or place the work on the cooling liquid surface. Rotate the work elevating device that raises and rotates the work during heating and cooling In order to rotate the work support member and the work immersed in the coolant. An annular jacket for injecting cooling liquid on the inner surface of the And a jacket elevating device for elevating to a retracted position.

[0006]   Further, in the inner peripheral surface quenching apparatus according to claim 2, the jacket has an annular side surface. The cooling liquid jetting part with the jetting hole for jetting the cooling liquid on this side surface and the cooling liquid jetting part are attached. And a vertical tubular jacket support rod that is detachably connected.

[0007]

【Example】

  An embodiment of the present invention will be described below with reference to FIG. FIG. 1 is an explanatory diagram of this embodiment. In the figure, 50 has a rectangular cross section and has an inner peripheral surface 51 and an outer peripheral surface 52. It is an annular work, and let's quench the inner surface 51 with the inner surface quenching device of this embodiment. It is what

[0008]   The work 50 is supported by an annular work support member 20 whose periphery is horizontally arranged. An annular heating coil 10 is provided so as to face the inner peripheral surface 51 of the workpiece 50. Has been done. Then, while keeping the work supporting member 20 horizontal, the shaft 53 of the work 50 is A work rotation device (not shown) that rotates as a center and a work support member 20 are raised and lowered. Work elevating equipment (not shown) for elevating the work 50 between the heating position and the inside of the cooling liquid L. Is provided. Depending on the case, the work rotating device and the work elevating device In some cases, it may be combined with a work elevating and rotating device. Also, heating carp The heating coil lifter (not shown) can be moved up and down between the heating position and the retracted position above it. A descending device is provided.

[0009]   The coolant L is contained in the coolant tank 40. 30 is the cooling liquid in the cooling liquid L This is a jacket for injecting L onto the inner peripheral surface 51 of the work 50. Jacket 30 is a cooling liquid Use bolts (not shown) for the injection part 31 and the flange 32 on the top surface of the center of the cooling liquid injection part 31. And a cylindrical jacket support rod 33 that is detachably connected. A plurality of injection holes (not shown) for injecting the cooling liquid L are provided on the annular side surface 31a of the injection portion 31. Has been done. The jacket support rod 33 is arranged so as to penetrate the heating coil 10. Has been done.

[0010]   As described above, the cooling liquid injection part 31 of the jacket 30 can be attached to and detached from the jacket support rod 33. Since the diameter and width of the inner surface 51 of the work change, It can be easily replaced with a prefabricated jacket that matches the diameter and width. Na In addition, lower the jacket 30 into the cooling liquid L or move the cooling liquid L to the evacuation position above the liquid level. A jacket lifting device (not shown) for lifting is provided above the jacket support rod 33. Has been. The jacket 30 supplies the cooling liquid L into the jacket support rod 33. As a result, the coolant L is jetted from the coolant jet 31. It

[0011]   Next, the operation of this embodiment will be described. First, the heating coil lifting device Ile 10 is moved up to its retracted position, and the jacket lifting device Ket 30 is also raised to its retracted position. Work 50 on work support member 20 Place it. Then, the jacket lifting device lowers the jacket 30 to cool it. After arranging in the liquid L, the heating coil elevating device lowers the heating coil 10 and The inner peripheral surface 51 of the ark 50 is opposed. Then, the work rotating device rotates the work 50 At the same time as starting the rotation, a high-frequency current is applied to the heating coil 10 for a predetermined time to load the workpiece 50. To heat.

[0012]   When the heating of the workpiece 50 is completed, the heating coil 10 is lifted by the heating coil lifting device. The work 50 is raised and moved to the retracted position, and the work 50 is cooled by the work lifting device. It descends into the liquid L and the inner peripheral surface 51 faces the side surface 31a of the cooling liquid jetting part 31 of the jacket 30. To be arranged. Then, the cooling liquid L is jetted from the jacket 30 to the inner peripheral surface 51 to The hardening of the peripheral surface 51 is completed. Then, raise the jacket 30 and move it to the retracted position. Then lift the work 50 above the liquid surface of the cooling liquid L, and then remove it from the work support member 20. Remove.

[0013]   Next, the second work is placed on the work support member 20. The second work If the inner diameter dimension or inner diameter width of the workpiece is different from that of the first workpiece 50, T30 has been manufactured in advance according to the inner diameter or width of the second workpiece. After replacing with the jacket, quench the inner surface 51 in the same way as the first workpiece 50. It

[0014]

[Effect of device]

  As described above, the inner peripheral surface quenching apparatus according to claim 1 is the inner peripheral surface of the annular work. In an inner peripheral surface quenching device for quenching a surface, the inner peripheral surface is arranged so as to face the inner peripheral surface. An annular high frequency heating coil and a high frequency heating coil between the heating position and the retracted position. And a heating coil elevating device that elevates and lowers with a work supporting member that supports the periphery of the work. , A coolant tank containing a coolant to which the workpiece is lowered and immersed, and a workpiece support Lower the member to immerse the work in the cooling liquid or raise the work above the cooling liquid surface. In order to rotate the work elevating device and the work being heated and cooled The work rotation device that rotates the work support member and the work immersed in the coolant An annular jacket that injects cooling liquid to the inner surface and lowers this jacket into the cooling liquid. And a jacket elevating device for elevating it to the retracted position.

[0015]   That is, in this inner surface quenching device, the jacket is lowered during use and The jacket and work lifting device are kept cool as they are raised to the retracted position before use. It is not installed together in the liquid waste tank, and therefore the inner surface quenching device of the present invention The arrangement has the advantage of being simple in construction.

[0016]   The jacket of the inner surface quenching device according to claim 2 has an annular side surface. The cooling liquid jetting part with the jetting holes for jetting the cooling liquid on the side surface and the cooling liquid jetting part And a vertical tubular jacket support rod connected to it.

[0017]   That is, in this inner surface quenching device, the jacket is preliminarily measured for the inner diameter and width of the work. It can be easily replaced with one that has been manufactured to suit. Therefore, the claims In addition to the advantages of the inner peripheral surface hardening device according to claim 1, When the inner diameter or width of the talk has changed, drain the coolant from the coolant tank and Conventional troublesome replacement work of replacing the jacket fixedly supported on the bottom of the link It also has the advantage that it can be eliminated.

[Brief description of drawings]

FIG. 1 is an explanatory view of an embodiment of an inner peripheral surface quenching device of the present invention.

[Explanation of symbols]

10 heating coil 20 Work support member 30 jacket 31 Coolant injection part 33 Jacket support rod 40 Coolant tank 50 work 51 Inner surface L coolant

Claims (2)

[Scope of utility model registration request] 1. An inner peripheral surface quenching device for quenching an inner peripheral surface of an annular work, wherein an annular high frequency heating coil is disposed so as to face the inner peripheral surface, and the high frequency heating coil is heated. A heating coil elevating device that elevates and lowers between a position and a retracted position, and a work support member that supports the periphery of the work,
A cooling liquid tank containing a cooling liquid in which the work is lowered and immersed, and a work elevating device that lowers the work support member to immerse the work in the cooling liquid or raises the work above the cooling liquid surface. , A work rotating device for rotating a work supporting member for rotating a work being heated and cooled, an annular jacket for injecting the cooling liquid onto the inner surface of the work immersed in the cooling liquid, and this jacket for the cooling liquid An inner peripheral surface quenching device, comprising: a jacket lifting device that lowers the inside and lifts it to a retracted position. 2. The jacket has a ring-shaped side surface, and a cooling liquid spraying portion having a spray hole for spraying a cooling liquid on the side surface,
The inner peripheral surface quenching device according to claim 1, further comprising a vertical cylindrical jacket support rod to which the cooling liquid injection unit is detachably connected.