JP3764884B2 - Annular metal body heating device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an annular metal body heating device used for shrink fitting of bearings, gears, couplings, and the like, and more particularly to a technique for facilitating detachment of cores after completion of heat treatment.
[0002]
[Prior art]
Conventionally, as an annular metal body heating device, the tip of both sides of a heating U-shaped core in which an I-type core is inserted into the inner diameter part of the annular metal body and a coil is wound around each side surface of the I-type core A structure in which the annular metal body is magnetically heated by abutting the surface and energizing the coil of the heating U-shaped core is known (see, for example, Patent Documents 1 and 2).
[0003]
By the way, in order to improve the heating rate and reduce noise / vibration, the heating device having the above-described structure is configured so that each abutting surface between the I-type core and the heating U-type core can be polished and brought into close contact with each other. Therefore, if the abutting surface is large, the work of pulling the I-type core in the direction perpendicular to the abutting surface by magnetism requires extremely large force, which is very difficult and labor-intensive by human power.
[0004]
[Patent Document 1]
Japanese Utility Model Publication No. 6-15294 [Patent Document 2]
Japanese Utility Model Publication No. 6-15295
[Problems to be solved by the invention]
The problem to be solved by the present invention is to solve these conventional problems and provide an annular metal body heating device that can easily and quickly detach cores in close contact after heat treatment with a small force There is to do.
[0006]
[Means for Solving the Problems]
The configuration of the present invention that solves this problem is as follows.
1) An I-type core is inserted into the inner diameter of the annular metal body, and both side surfaces of both ends of the I-type core are brought into contact with the tip surfaces on both sides of the heating U-type core around which the coil is wound. In the annular metal body heating device for energizing the coil of the U-shaped core for magnetic heating of the annular metal body, the one end of the I-shaped core is pressed along the contact surface with the heating U-shaped core. A pressing means is provided for sliding, and a roller is supported at the tip of the abutting surface on the other end side of the I-type core of the heating U-type core so as to protrude toward the I-type core side where a part of the rollers abuts. And an annular metal body heating device 2), wherein the I-shaped core slid by the pressing means can be easily detached from the heating U-shaped core by riding on the roller. A part of the abutting surface of the core is notched to form a recess, and a roller protrudes from the abutting surface in the recess. The part of the abutting surface of the I-type core that faces the roller is cut out diagonally to form an inclined surface, and the end of the I-type core can be smoothly run on the roller without being caught when sliding. The annular metal body heating device according to 1), wherein the pressing means is provided with a core holder for holding the lower end portion of the vertical I-shaped core, and the tip end portion of the lever is connected to the core holder. The annular metal body heating device according to 1) or 2) above, wherein the I-type core is lifted along the abutting surface by the core holder by the operation of the lever and can be detached 4) Core holder and lever The annular metal body heating device according to 3) above, wherein a slide base is provided for advancing and retreating with respect to the contact surface of the heating U-shaped core, and a core holder and a lever are attached to the slide base.
[0007]
[Action]
In the present invention, when one end of the I-type core is slid along the abutting surface with the heating U-type core by pressing means, the other end of the I-type core runs on the roller of the heating U-type core. Detach from the U-shaped core for heating. Therefore, it is possible to detach easily and quickly with a small force without performing a labor-intensive work such as pulling in a direction perpendicular to the abutting surface as in the prior art.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
The roller of the present invention may be mounted so as to protrude from the end of the heating U-shaped core, but a part of the abutting surface of the heating U-shaped core is notched to form a recess, When the roller is pivotally supported so that a part of the roller protrudes from the abutting surface and the inclined surface is formed by notching the portion of the abutting surface of the I-type core facing the roller, It is preferable because the end can be smoothly ridden on the roller without being caught.
[0009]
As the pressing means, a core holder that holds the lower end of the vertical I-type core is provided, and the lever holder is connected to the tip of the lever. It can be lifted along the surface and removed quickly. In addition, if a slide base that moves the core holder and lever back and forth with respect to the abutting surface of the heating U-shaped core is provided, even if the I-shaped core or workpiece is large, it can be moved easily and can be easily abutted and detached. preferable. Embodiments of the present invention will be specifically described below with reference to the drawings.
[0010]
【Example】
The embodiment shown in FIGS. 1 to 8 is an example in which the present invention is applied to a bearing heater used at the time of shrink fitting of a bearing. 1 is an external view of an annular metal body heating device of an embodiment, FIG. 2 is a partially enlarged explanatory view of FIG. 1, FIG. 3 is a side view of the pressing means of the embodiment, FIG. FIG. 5 is an explanatory view of the upper abutting surface of the I-type core and the heating U-type core of the embodiment, and FIGS. 6 to 8 are explanatory views showing the use state of the pressing means of the embodiment.
[0011]
In the figure, 1 is a workpiece (bearing), 2 is an I-type core, 2a is an abutting surface, 2b is an inclined surface, 3 is a U-shaped core for heating, 3a is an abutting surface, 3b is a recess, 3c is a roller, 4 is a coil, 5 is a pressing means, 5a is an I-type core holder, 5b is a slide hole, 5c is a horizontal rail, 5d is a support bracket, 5e is a release lever, 5f is a lever shaft, 5g is a shaft support, and 5h is a work receiver. A base 5i is a slide rail, 5j is a slide base, 6 is an apparatus main body, 6a is a handle, 6b is a leg, and 7 is an operation panel.
[0012]
In this embodiment, a part of the upper abutting surface 2a of the I-type core 2 is formed obliquely to provide an inclined surface 2b, and a part of the upper abutting surface 3a of the heating U-type core 3 is cut away. The recess 3b is provided, and the roller 3c is rotatably attached to the recess 3b.
[0013]
The pressing means 5 is attached to a slide base 5j having a concave cross section with a work cradle 5h consisting of a pair of left and right vertical plates by a slide rail 5i, and holds the lower end portion of the I-type core 3 between the work cradle 5h. The I-shaped core holder 5a having a concave cross section is inserted into the two slide holes 5b through the horizontal rail 5c so as to be movable in the vertical direction by the length of the slide hole 5b, and the I-shaped core holder 5a is mounted on the slide base 5j. A support bracket 5d is fixed to the lowermost point, and a release lever 5e is pivotally supported on each workpiece cradle 5h by a lever shaft 5f so as to be pivotable in the vertical direction. The front end of the release lever 5e is an I-type. It is pivotally supported on the core holder 5a.
[0014]
In the present embodiment, as shown in FIG. 6, the release lever 5e is pulled forward, the I-type core holder 5a and the work receiving base 5h are pulled out from the slide base 5j, and the I-type core 2 is set up vertically to the I-type core holder 5a. At the same time, the work 1 to be heated is inserted into the I-type core 2 and placed on the upper end of the work cradle 5h.
[0015]
Next, the I-type core holder 5a and the work cradle 5h are pushed out so that the abutting surface 3a of the heating U-type core 3 and the abutting surface 2a of the I-type core 2 are in close contact with each other, and the lower end of the I-type core holder 5a is The work 1 is induction-heated to a predetermined temperature by fixing it with the support bracket 5d, turning on a power supply unit (not shown) and energizing the coil 4.
[0016]
When the heat treatment is finished, as shown in FIG. 7, the release lever 5e is pushed down to lift the I-type core holder 5a upward in this manner, and the I-type core 2 rises along the abutting surfaces 2a and 3a. At the same time, as shown in FIG. 8, the abutting surface 2a of the I-type core 2 rides on the roller 3c, the abutting surfaces 2a and 3a are separated, and the I-type core 2 is detached from the heating U-type core 3.
[0017]
Since the present embodiment is configured as described above, it can be easily and quickly detached with a small force without performing a labor-intensive work such as pulling in a direction perpendicular to the abutting surface as in the prior art. did it.
[0018]
【The invention's effect】
As described above, according to the present invention, it is possible to provide an annular metal body heating device that can easily and quickly detach cores in a close state after heat treatment with a small force.
[Brief description of the drawings]
FIG. 1 is an external view of an annular metal body heating apparatus according to an embodiment.
FIG. 2 is a partially enlarged explanatory view of FIG. 1;
FIG. 3 is a side view of the pressing means of the embodiment.
4 is a cross-sectional view taken along the line AA in FIG.
FIG. 5 is an explanatory diagram of an upper abutting surface between the I-type core and the heating U-type core of the example.
FIG. 6 is an explanatory view showing a usage state of the pressing means of the embodiment.
FIG. 7 is an explanatory view showing a usage state of the pressing means of the embodiment.
FIG. 8 is an explanatory view showing a usage state of the pressing means of the embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Work 2 I-type core 2a Contact surface 2b Inclined surface 3 Heating U-type core 3a Contact surface 3b Recess 3c Roller 4 Coil 5 Pressing means 5a I-type core holder 5b Slide hole 5c Horizontal beam 5d Support bracket 5e Release lever 5f Lever shaft 5g Shaft support 5h Work receiving base 5i Slide rail 5j Slide base 6 Device body 6a Handle 6b Leg 7 Operation panel

Claims (4)

An I-type core is inserted into the inner diameter portion of the annular metal body, and the side surfaces of both ends of the I-type core are brought into contact with the front end surfaces on both sides of the heating U-type core around which the coil is wound. In an annular metal body heating device for energizing a coil of a mold core and heating the annular metal body magnetically, the end of the I-type core is pressed and slid along an abutting surface with the heating U-shaped core Provided with a pressing means for supporting, and pivotally supported so that the roller protrudes to the I-core side where a part of the U-core for heating is joined to the tip of the abutting surface on the other end side of the I-core, An annular metal body heating device characterized in that it can be easily detached from a U-shaped core for heating by riding an I-shaped core slid by a pressing means onto a roller. A part of the abutting surface of the heating U-shaped core is cut out to form a recess, and a roller is pivotally supported in the recessed part so that a part of the abutting surface protrudes from the abutting surface. 2. The surface of the surface facing the roller is cut obliquely to form an inclined surface, and the end of the I-type core can be smoothly ridden on the roller without being caught and detachable. Ring metal body heating device. The pressing means is provided with a core holder that holds the lower end portion of the vertical I-type core, the tip of the lever is connected to the core holder, and the I-type core is moved along the abutting surface by the core holder by operating the lever. The annular metal body heating device according to claim 1 or 2, wherein the annular metal body heating device can be detached by raising. The annular metal body heating device according to claim 3, wherein a slide base for moving the core holder and the lever back and forth with respect to the abutting surface of the heating U-shaped core is provided, and the core holder and the lever are attached to the slide base.

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