JP5821114B2 - Heating device jig, heating device, heat treatment device, and heating method - Google Patents

Description

  The present invention relates to a jig for a heating device that induction-heats an annular workpiece, a heating device using the jig, a heat treatment apparatus, and a heating method.

  Conventionally, in order to heat an annular workpiece, for example, the workpiece is supported by a support portion such as a chuck mechanism, and heated by a heating coil while rotating the workpiece. In order to heat a large workpiece having an annular shape, a heat treatment apparatus has been proposed in which the workpiece is heated without being sandwiched by a chuck mechanism or the like.

  Patent Document 1 discloses a high-frequency heat treatment apparatus capable of heating a large bearing ring and the like. In this technology, a large ring-shaped product is transported, aligned, and supported by the rotary table, and horseshoe-shaped heating coils are arranged at multiple locations in the circumferential direction of the ring-shaped product. The product is heated by a plurality of heating coils while rotating.

  Patent Document 2 discloses an apparatus that performs high-frequency heat treatment on the entire annular component. In this technique, a large annular component is conveyed, the annular component is placed on and supported by a plurality of support rollers, and the outer diameter surface or inner diameter surface of the annular component is pressed and positioned by three or more positioning rollers. Inductive heating is performed by a heating coil while rotating the annular part.

JP 2005-325409 A JP 2009-287074 A

  However, in a heating apparatus such as a conventional heat treatment apparatus, a work is carried in using an appropriate carrying-in support tool, and is positioned and supported by a heating jig such as a turntable or a support roller. After heating, it was carried out using an appropriate carrying-out support after heating. When carrying in, heating, and carrying out, it was necessary to transfer the workpiece onto a jig or support. When the workpiece is large, it is necessary to adjust the center of gravity at the time of loading and unloading so that the workpiece can be stably conveyed. At the time of heating, the workpiece must be accurately aligned so that desired heating can be realized. In addition, the structure is complicated because a structure is provided for supporting the workpiece during transport and during heating. In the case of the heat treatment apparatus as in Patent Document 1, the turntable must be capable of rotating with the work fixed, and a turntable according to the work is required, so that the versatility is not sufficient.

  Accordingly, a first object of the present invention is to provide a heating apparatus jig having a simple configuration that is highly versatile and can support a workpiece without being transferred during conveyance and heating. It is a second object of the present invention to provide a heating apparatus, a heat treatment apparatus, and a heating method that have high versatility and have a simple configuration capable of easily carrying and heating a workpiece.

The heating device jig for achieving the first object is a heating device jig for supporting an annular workpiece during conveyance and heating, and is arranged in connection with the central structure portion and the central structure portion. And a work support portion on which the work is placed around the central structure portion, and the work support portions are arranged around the central structure portion in the circumferential direction so as to place the work during transport and heating. The central structure section has a roller, and the central structure section has a connection means for conveyance for suspending the work in a state where the work is placed on the work support section, a rotational drive mechanism that rotationally drives a plurality of rotating rollers, and a driving force applied to the rotational drive mechanism Drive connection means for inputting the rotation of the workpiece, and the plurality of rotating rollers are rotated by the driving force input to the rotation driving mechanism to rotate the workpiece along the ring shape.

The drive connection means may be disposed above the work supported by the support portion.
Preferably, the transmission unit includes a drive shaft disposed along the rotation center and coupled to the drive connection means, and a plurality of driven shafts coupled to the plurality of rotation rollers, and a drive gear of the drive shaft; The driven gears of the plurality of driven shafts mesh with each other.
It is preferable that the support unit includes a workpiece alignment unit that aligns the inner periphery or the outer periphery of the workpiece, and the workpiece alignment unit protrudes upward from the plurality of rotating rollers.

  A heating device that achieves the above object includes a heating device jig as described above, a carry-in section for placing a work on the jig, and heating by a heating unit while rotating the work placed on the jig. A transport mechanism is provided that hangs the jig and transports between the carry-in section and the heating section in a state where the transport connection means is connected.

  In the heating apparatus, the transport mechanism includes a base portion that can move between the carry-in section and the heating section, and the base portion includes a suspension unit that is connected to the transport connection unit and a drive unit that is connected to the drive connection unit. It is preferable that the drive means and the drive connection means are connected by connecting the suspension means and the transport connection means.

Preferably, the drive means and the drive connection means are configured to be detachable in the vertical direction, and the suspension means and the transport connection means are configured to be detachable in the horizontal direction.
The suspension means has a plurality of locking pins that slide in the lateral direction in the circumferential direction, and the connection means for transport has a locking hole larger than the locking pin at a position corresponding to the locking pin of the central structure portion, The locking hole preferably has a width corresponding to the locking pin on the upper side and a substantially triangular shape wider on the lower side than the locking pin.

The transport mechanism includes a transport rail provided between the carry-in section and the heating section, and the base portion has a traverse base portion that moves along the transport rail, and a lifting means that moves up and down with respect to the traverse base portion. It is preferable that an elevating base portion connected to the elevating base portion is provided, and the traversing base portion is provided with a lifter for elevating the elevating base portion and an urging means for urging upward when the elevating base portion is raised.
Preferably, the heating section includes circumferential positioning means for positioning the jig with respect to the circumferential direction.

  A setup jig that can be hung on the suspension means and a setup section on which the setup jig can be placed are provided, the transport rail is extended to the setup section, and the setup jig is arranged in the heating section. It is preferable that the components of the heating unit can be held at a position corresponding to.

A heat treatment apparatus that achieves the above object is composed of the heating apparatus as described above, and includes a cooling section under the heating section, and the work placed on the jig is arranged in the cooling section by lowering the jig. Cooling is possible.
The heating section may be provided with a stopper that supports the jig from below and releases it downward.
Preferably, the driving means is provided on the elevating base portion so as to be disposed above the cooling section in a state where the jig is disposed in the cooling section.

In order to achieve the second object described above, a method for heating a workpiece that conveys and heats an annular workpiece includes a central structure portion and a circumferential arrangement around the central structure portion connected to the central structure portion. A jig provided with a plurality of rotating rollers is disposed in the carry-in section, the work is placed on the plurality of rotating rollers so as to surround the central structure, and the jig is suspended by the central structure. It is lowered and transported from the carry-in section to the heating section, and the driving force input to the central structure in the heating section is transmitted to a plurality of rotating rollers for rotation, thereby heating the coil while rotating the workpiece along the ring shape. Inductively heat the workpiece.

  According to the heating device jig of the present invention, since the workpiece can be supported using the same jig from the time of conveyance to the time of heating, the structure for supporting the workpiece during conveyance and the workpiece during heating are supported. There is no need to provide a separate structure. Moreover, there are few restrictions on the size and shape of the workpiece that can be placed on the workpiece support. Therefore, it is possible to provide a heating device jig having a simple configuration that is highly versatile and can support a workpiece without being transferred during conveyance and heating.

  According to the heating apparatus, the heat treatment apparatus, and the heating method of the present invention, if the work can be placed on a jig and rotated, the workpiece and the heating section are placed on the same jig. Can be transported between and heated in the heating section Therefore, it is possible to provide a heating apparatus, a heat treatment apparatus, and a heating method having a simple configuration that is highly versatile and can easily carry and heat a workpiece.

It is a top view of the heat processing apparatus which concerns on embodiment of this invention. It is a side view of the heat processing apparatus which concerns on embodiment of this invention, and has abbreviate | omitted and shown the heating part provided in the near side. It is a top view of the jig for heat treatment equipment concerning the embodiment of the present invention. (A) is a longitudinal cross-sectional view of the jig | tool for heat processing apparatuses and the raising / lowering base part which concerns on embodiment of this invention, (b) is a partial side view of the center structure part in the jig | tool for heating. It is a top view of the conveyance loader part in the conveyance mechanism of an embodiment. It is AA schematic sectional drawing of FIG. 5 which concerns on the conveyance mechanism of embodiment. It is a BB schematic sectional drawing of Drawing 6 concerning the conveyance mechanism of an embodiment. It is CC schematic sectional drawing of FIG. 5 which concerns on the conveyance mechanism of embodiment. It is a partial side view which shows the state which lowered the raising / lowering base part in the heat processing apparatus of embodiment. (A)-(c) is a figure explaining the connection operation | movement of the raising / lowering base part which concerns on the conveyance mechanism of embodiment, and a jig | tool. It is a schematic plan view which shows the heating section of embodiment. It is a side view of the jig stopper and the work pressing part in the heating section of the embodiment. (A) is a side view of the heating part and the displacement means in the heating section of the embodiment, (b) is a partial plan view, and (c) is a rear view. It is a partial side view of the position detection part in the heating section of embodiment. (A)-(c) is a figure explaining operation | movement of the heating section in the heat processing apparatus of embodiment, and a cooling section. (A)-(c) is a figure explaining the hardening method in the heat processing apparatus of embodiment. (A) is a front view which shows the heating coil in the heat processing apparatus of embodiment, (b) is a partial front view which shows the shape of the opposing part with the workpiece | work in the heating coil of a modification. It is a partial front view which shows the shape of the opposing part with the workpiece | work in the heating coil of a modification.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
This embodiment demonstrates using the example of the turning-type hardening apparatus for quenching a large sized heating target object. The object to be heated is an inner ring and an outer ring having a ring shape with a diameter of 1 m or more, here 3 m or more, and constituting a large turning wheel or a large bearing. The heating part of the heating object has a substantially constant shape all around.

[overall structure]
As shown in FIGS. 1 and 2, the heat treatment apparatus 10 includes a jig 100 that supports the workpiece W, a loading / unloading section 300 that loads and unloads the workpiece W, and a conveyance mechanism 200 that hangs and conveys the jig 100. A heating section 400 that heats the workpiece W placed on the jig 100 while rotating it, a cooling section 500 that is provided below the heating section 400, and a setup that is provided on the opposite side of the loading / unloading section 300. And a component replacement section 600 as a section.

[jig]
As shown in FIGS. 3 and 4, the jig 100 is input to the workpiece support portion 110 on which the workpiece W is placed, the central structure portion 130 provided at the center of the workpiece support portion 110, and the central structure portion 130. A rotation drive mechanism 150 serving as a transmission unit that transmits the driving force to the workpiece support unit 110 and rotates the workpiece W placed on the workpiece support unit 110 along the ring shape.

  The work support unit 110 includes a plurality of radial mounts 111 joined to the lower part of the central structure unit 130 and extending in the radial direction, and a rotating roller 112 arranged along the radial direction on the distal end side of each radial mount 111. At least 3 or more, and 8 here, the radiation stand 111 and the rotation roller 112 are provided in the circumferential direction, and are arranged at equal intervals in the circumferential direction. There is a space between the radiation bases 111 adjacent to each other.

As shown in FIG. 4A, each rotating roller 112 has a structure in which a ceramic cylindrical material 114 is fixed around a core material 113, and both ends of the core material 113 form heat resistant bearings 115 of the radiation frame 111. It is rotatably supported. In this embodiment, the side peripheral surface of each cylindrical member 114 is formed to have a constant diameter over the entire length, and the contact portion with the workpiece W on the side peripheral surface is substantially horizontal. Each cylindrical material 114 can be appropriately changed in material, shape, etc. according to the workpiece W. For example, the shape may not be provided with unevenness on the side peripheral surface of the cylindrical material 114, or may be the shape provided with unevenness such as a large number of grooves.

  As shown in FIG. 4A, each radiation mount 111 is provided with a workpiece alignment roller 121 that aligns the inner periphery or outer periphery of the workpiece W. The workpiece alignment roller 121 protrudes upward from each rotary roller 112 and is rotatable about a substantially vertical axis.

  As shown in FIG. 4A, the central structure part 130 includes a cylindrical connection protrusion 131 that protrudes upward from the center of the work support part 110. Inside the connection protrusion 131, the gear box 151 and the drive shaft 152 of the rotational drive mechanism 150 are disposed, and the connection protrusion 131 and the drive shaft 152 are coaxial.

  The connection protrusion 131 is provided with a transfer connection means 132 for suspending the entire jig 100 by the transfer loader 220, and a drive fixed to the end of the drive shaft 152 is provided inside the connection protrusion 131. Connection means 133 is disposed. The conveying connecting means 132 is composed of a plurality of locking holes 134 that are opened around the connection protrusion 131 so as to be at equal positions in the circumferential direction. Each locking hole 134 is formed in a substantially triangular shape as shown in FIG. The drive connecting means 133 includes a first meshing member 141 for constituting the meshing clutch mechanism 140.

  The locking hole 134 and the first meshing member 141 that are the connection positions of the conveying connecting means 132 and the driving connecting means 133 are located above the upper edge of the workpiece W supported on the plurality of rotating rollers 112. Has been placed.

  The rotation drive mechanism 150 is provided in the central structure portion 130 and the work support portion 110 and is configured to transmit a driving force input to the upper end side of the central structure portion 130 to the rotation roller 112. The rotation drive mechanism 150 is arranged on the center of the central structure 130 in the vertical direction, and on each radiation mount 111 of the work support 110, and between the rotation roller 112 and the central structure 130. And a driven shaft 153 that connects the two. The drive shaft 152 and the driven shaft 153 are connected within the gear box 151.

Driving connection means 133 to which driving force is input from the transport mechanism 200 is provided on the upper end side of the driving shaft 152, and a driving gear 154 is fixed on the lower end side. A driven gear 155 is provided on one end side of each driven shaft 153, and a core material 113 of the rotating roller 112 is connected to the other end side via a universal joint 156.
In the gear box 151, the driven gear 155 of each driven shaft 153 meshes with the same drive gear 154 of the drive shaft 152. The gear ratios of the driven gears 155 with respect to the drive gear 154 are all the same.

  As shown in FIG. 4A, a bottom positioning hole 123 for positioning the central structure 130 is provided at the bottom of the central structure 130, and the radiation gantry 111 is provided at the tips of the plurality of radiation gantry 111. A cam follower 125 for positioning in the circumferential direction is provided.

In such a jig 100, as shown in FIGS. 3 and 4A, the workpiece W is placed on the plurality of rotating rollers 112 of the workpiece support portion 110. When the inner peripheral surface or the outer peripheral surface of the workpiece W comes into contact with the workpiece alignment roller 121, a large displacement of the workpiece W is prevented.
In this state, the entire jig 100 on which the workpiece W is placed can be suspended at the central structure 130. Further, when a driving force is input from the driving connection means 133 of the central structure portion 130, each rotating roller 112 rotates and the workpiece W rotates along the ring shape.

[Import / Export section]
As shown in FIGS. 1 and 2, the loading / unloading section 300 includes a loading / unloading position P <b> 1 for loading and unloading the workpiece W from the previous process, and a connection / release for connecting the jig 100 to / from the conveyance mechanism 200. A suspension position P2 is provided. The loading / unloading section 300 includes a loading / unloading table 311, a loading / unloading rail 313 provided on the loading / unloading table 311 substantially in parallel from the loading / unloading position P <b> 1 to the hanging position P <b> 2, and a loading / unloading carriage that moves along the loading / unloading rail 313. 315 and a conveyance drive unit 317 that moves the carry-in / carry-out carriage 315.

  The carry-in / carry-out cart 315 is provided with a jig support structure 320 for supporting the jig 100 as shown in FIG. The jig support structure 320 is fitted around the bottom positioning hole 123 of the jig 100 to place the central structure part 130 at a predetermined position, and is provided around the fitting protrusion 321 and has a central structure. A central support base 323 that abuts and supports the bottom of the section 130, a front end support 325 that abuts and supports the bottom end of each radiation mount 111, and a cam follower 125 at the tip of each radiation mount 111 are accommodated in the circumferential direction. A positioning recess 327 for positioning.

  In the carry-in / carry-out section 300, the carry-in / carry-out carriage 315 is arranged at the carry-in / carry-out position P1, and the work W is placed on the work support part 110 of the jig 100. The carry-in / carry-out carriage 315 is moved from the carry-in / carry-out position P1 to the suspension position P2 by the conveyance drive unit 317 and stopped. As a result, the central structure 130 of the jig 100 is accurately arranged in the predetermined direction at the hanging position P2.

[Transport mechanism]
As shown in FIGS. 1 and 2, the transport mechanism 200 includes a transport rail 210 disposed above each section, and a transport loader unit 220 that moves along the transport rail 210.
In the frame 20, a pair of horizontal frame members 21 are disposed substantially horizontally and continuously above the loading / unloading section 300, the heating and cooling sections 400 and 500, and the component replacement section 600. The transport rails 210 are provided so as to be parallel to each other.

  As shown in FIGS. 5 and 6, a linear rack 212 that engages with the pinion 237 of the transport loader unit 220 is provided on the side surface side of one of the transport rails 210 so as to have a substantially entire length. As indicated by phantom lines in FIG. 8, a rail stopper 213 for stopping the transport loader unit 220 at a predetermined position is provided at the end of the transport rail 210. Although FIG. 8 shows the rail stopper 213 at the end on the carry-in / out section 300 side, a similar rail stopper 213 is also provided at the end on the component replacement section 600 side.

  As shown in FIGS. 5 and 6, the transport loader unit 220 is arranged on the transport rail 210 and moves along the transport rail 210, and a traverse mechanism 231 for moving the traverse base unit 230. And an elevating base part 240 connected to the lower side of the traversing base part 230 and moving together with the traversing base part 230, and an elevating mechanism 260 for raising and lowering the elevating base part 240 relative to the traversing base part 230.

As shown in FIGS. 5 and 8, the traverse base portion 230 includes a traverse base 232 having a width equal to or greater than the distance between the pair of transport rails 210, and traverse struts 233 erected at the intermediate portion in the width direction of the traverse base 232. Is provided.
As shown in FIGS. 5 and 6, the traversing mechanism 231 is fixed to the traverse base 232 and a traverse support 234 such as a rolling wheel or a slider that movably supports the traverse base 232 on the pair of transport rails 210. And a pinion 237 that is connected to the output shaft 236 of the traverse drive motor 235 and meshes with the rack 212 of the transport rail 210.

  As shown in FIGS. 6 and 7, the elevating base portion 240 includes an elevating support base 242, and an elevating auxiliary base 243 integrally provided above both end sides of the elevating support base 242. And mounted on the traversing base portion 230. The elevating support base 242 includes a suspension means 245 for connecting to the conveying connection means 132 of the jig 100, and a rotational driving means for driving the drive shaft 152 by connecting to the driving connection means 133 of the jig 100. 246.

  As shown in FIGS. 4A, 6, and 7, the suspending means 245 has a cylindrical shape that protrudes downward from the lifting support base 242 and accommodates the upper end side of the connection protrusion 131 of the jig 100. A hanging protrusion 247 and a plurality of locking tools 248 provided at positions corresponding to the locking holes 134 of the jig 100 in the hanging protrusion 247 are provided.

  Each locking tool 248 includes a holding body 249 fixed to the hanging protrusion 247, a locking pin 251 that is held by the holding body 249 and slides laterally, an air cylinder that drives the locking pin 251, and the like. And a locking drive unit 252. As shown in FIG. 4B, the locking hole 134 of the jig 100 is formed in a substantially triangular shape larger than the locking pin 251, and the lower side is wider than the locking pin 251 and the upper side is formed on the locking pin 251. It has a corresponding width.

  As shown in FIGS. 4A and 6, the rotation driving means 246 is attached to a rotation driving motor 255 composed of a servo motor or the like fixed to the lifting support base 242 and an output shaft 256 of the rotation driving motor 255. Second engagement member 142 and engagement biasing means 257 such as a spring that biases second engagement member 142 downward along output shaft 256 are provided.

  The rotation driving means 246 is engaged with and disengaged from the driving connecting means 133 of the jig 100 in the vertical direction. The meshing clutch mechanism 140 is configured by meshing the first meshing member 141 of the drive shaft 152 of the jig 100 with the second meshing member 142 of the output shaft 256 of the rotary drive motor 255. The rotation driving unit 30 for rotating the workpiece W is configured in a state where the rotation driving unit 246 and the driving connection unit 133 of the jig 100 are connected by the meshing clutch mechanism 140.

As shown in FIGS. 6 to 8, the elevating mechanism 260 includes an elevating lifter 261 that elevates the elevating base portion 240, elevating urging means 262 that urges upward when the elevating base portion 240 is raised, and an elevating base when elevating And a lifting guide portion 263 for guiding the portion 240.
The elevating lifter 261 is fixed to the elevating drive motor 265 made of a servo motor or the like fixed on the upper side of the traversing column 233 of the traversing base portion 230 and the output shaft 266 of the elevating drive motor 265 so as to be rotatable and arranged in a substantially vertical direction. The screw shaft 267, the elevating plate 268 that is screwed to the screw shaft 267 and moved up and down by the rotation of the screw shaft 267, and the elevating plate 268 and the elevating support base 242 of the elevating base portion 240 are connected to each other vertically. Four elevating connecting rods 271 arranged in the direction.

The elevating guide part 263 is fixed to four elevating guide rods 274 fixed to the elevating support base 242 on the lower end side and connected to each other on the upper end side by a connecting plate 273, and to the traverse base 232 of the traversing base part 230. And four elevating bearings 275 that support the elevating guide rod 274 so as to be movable up and down. The four elevating guide rods 274 are arranged in a substantially vertical direction and can be moved up and down.
The lifting / lowering urging means 262 includes two fluid pressure cylinders 277 such as air fixed to the traverse base 232, and the advancing / retreating rods 278 of the fluid pressure cylinders 277 are arranged in a substantially vertical direction and fixed to the lifting assist base 243. Has been.

  In such a transport mechanism 200, the transport loader unit 220 is allowed to travel on the transport rail 210, as shown in FIGS. 5 and 6, the traverse drive motor 235 is driven to engage the pinion 237 engaged with the rack 212. Roll or reverse. With the rail stopper 213 and the position detection sensor 279 shown in FIG. 6, the conveyance loader unit 220 can be accurately stopped at a predetermined position above the loading / unloading section 300, the heating and cooling sections 400 and 500, and the component replacement section 600.

  In the transport mechanism 200, in order to connect and hang the jig 100 to the transport loader unit 220, the traverse base unit 230 of the transport loader unit 220 is stopped at a predetermined position. In this state, the elevating base portion 240 is lowered, the suspending means 245 is connected to the conveying connecting means 132 of the jig 100, the rotation driving means 246 is connected to the rotation driving mechanism 150 of the jig 100, and the elevating base portion Increase 240.

In order to lower the elevating base portion 240 by the elevating mechanism 260, as shown in FIGS. 6 and 8, the elevating plate 268 is lowered by rotating the screw shaft 267 with the elevating drive motor 265 of the elevating lifter, thereby elevating the elevating base. The part 240 is lowered. The advancing / retracting rod 278 of the fluid pressure cylinder 277 is driven downward by the elevating base portion 240. FIG. 9 shows a state where the elevating base portion 240 is lowered.
In order to raise the elevating base 240, the screw shaft 267 is rotated in the reverse direction. At this time, supplying the fluid pressure to the fluid pressure cylinder 277 biases the elevating base portion 240 upward by the advance / retreat rod 278. As a result, the lift base unit 240 is moved upward by the lift lifter 261 while being biased by the lift biasing means 262.

In order to connect the suspension means 245 to the connection means 132 for conveyance of the jig 100, the conveyance loader unit 220 is stopped with respect to the jig 100 with high accuracy. Thereby, the raising / lowering base part 240 and the center structure part 130 of the jig | tool 100 become a predetermined | prescribed relative position and relative orientation.
As shown in FIG. 10A, the elevating base portion 240 is lowered, and the connection protrusion 131 of the jig 100 is inserted inside the hanging protrusion 247. As shown in FIG. 10B, the elevating base portion 240 is lowered to a predetermined height, and the heights of the locking member 248 and the conveying connecting means 132 are matched. At that time, the height may be adjusted by bringing the upper end of the connection projection 131 into contact with the top of the suspension projection 247 inside.

  As shown in FIG. 10 (c), each locking pin 251 is advanced in the lateral direction in a state where the suspending means 245 and the conveying connecting means 132 of the jig 100 are arranged at a predetermined relative position. Then, each locking pin 251 is inserted into the locking hole 134 of the transport connection means 132 and locked in the locking hole 134 of the connection protrusion 131. Thereby, the suspending means 245 and the connection protrusion 131 are connected. When the locking pin 251 is retracted in the lateral direction, it is detached from the locking hole 134 and the locked state is released.

  As shown in FIG. 4B, the locking hole 134 is formed in a substantially triangular shape that is narrower on the upper side of the locking pin 251 and wider on the lower side. Therefore, it can be easily engaged and disengaged by inserting and removing the locking pin 251 below the locking hole 134. When the jig 100 is lifted by raising the elevating base portion 240 with the locking pin 251 inserted into the locking hole 134, the locking pin 251 is locked to the upper side of the locking hole 134. 100 can be accurately aligned with the transport loader unit 220.

The connection between the rotation driving unit 246 and the driving connection unit 133 of the jig 100 is performed together with the connection between the hanging unit 245 and the conveying connection unit 132.
As shown in FIG. 10A, when the elevating base portion 240 is lowered from a predetermined position above the jig 100, as shown in FIG. 10B, the second meshing member 142 of the rotary drive motor 255 is moved to the jig. 100 is inserted into the connection projection 131 and meshes with the first engagement member 141 of the drive connection means 133 provided in the jig 100 in the vertical direction. In this state, as shown in FIG. 10 (c), when the locking tool 248 and the connecting means for transport 132 are locked in the lateral direction, the lift base portion 240 and the connection protrusion 131 of the jig 100 are connected. Thus, the meshing state of the first meshing member 141 and the second meshing member 142 is maintained.

Since the second meshing member 142 is urged downward by the meshing urging means 257, the vertical relative positions of the first meshing member 141 and the second meshing member 142 have a degree of freedom, and the connection is smooth when connected. it can. In the connected state, the meshed state can be maintained with an appropriate pressure.
As shown in FIG. 10 (c), the rotation driving means 246 and the driving connection means 133 of the jig 100 are connected, so that the driving force of the rotation driving means 246 is rotated as shown in FIG. 4 (a). The rotation roller 112 can be driven to rotate by the rotation driving unit 30.

[Heating section]
2, 11, and 12, the heating section 400 includes a jig holding mechanism 410 that is disposed on the heating / cooling frame 40 of the frame 20 and holds the jig 100 in a predetermined position, and the jig 100. A work holding unit 420 that holds the workpiece W placed on the jig 100 and a heating unit 450 that heats the workpiece W placed on the jig 100.

A plurality of jig holding mechanisms 410 and heating units 450 are provided around the center of the jig 100, that is, the rotation center C of the workpiece W. The jig holding mechanism 410 is provided at a position corresponding to the radiation base 111 and the rotating roller 112 of the jig 100. The jig holding mechanism 410 may be provided at a position corresponding to all the radiation mounts 111 and the rotation rollers 112, but here, positions corresponding to a plurality of the radiation mounts 111 and the rotation rollers 112 as a part, specifically, Are provided at substantially equal intervals in four places.
The heating position P3 of the workpiece W is set in the gap between the radiation bases 111 adjacent to each other of the jig 100, and each heating unit 450 is provided so as to correspond to the heating position P3. It is preferable that the heating units 450 are arranged substantially evenly in the circumferential direction with respect to the rotation center C of the workpiece W.

  As shown in FIG. 12, the jig holding mechanism 410 includes a circumferential direction positioning means 411 for positioning the jig 100 in the circumferential direction, and a height direction positioning means 412 for positioning the jig 100 in the height direction. With.

  As shown in FIG. 12, the height direction positioning means 412 is swingably provided in a water tank 510 in the cooling section 500 and supports a jig stopper 413 that supports the jig 100 from below, and a stopper of the heating / cooling stand 40. A stopper driving cylinder 414 provided on the support column 41 to swing the jig stopper 413 and a link 416 connecting the jig stopper 413 and the rod 415 of the stopper driving cylinder 414 are provided. When the rod 415 moves back and forth in the lateral direction, the jig stopper 413 swings around the stopper fulcrum 417, and the support end 418 is displaced between the support position of the jig 100 and the lower release position.

  As shown in FIG. 12, the circumferential direction positioning means 411 includes a plurality of guide rails 419 erected in a water tank 510 of a cooling section 500 described later. The guide rail 419 has a guide groove 419a whose upper end is released, and is arranged in a substantially vertical direction. Since the cam follower 125 at the tip of the radiating frame 111 of the jig 100 is accommodated in the guide groove 419a, each radiating frame 111 is guided when the jig 100 is moved up and down, and the jig 100 is moved in the circumferential direction and the diameter at each position. Positioned in the direction.

  The work pressing part 420 is provided on a part or all of the height direction positioning means 412. As shown in FIG. 12, the work pressing unit 420 includes a swinging table 421 provided on the stopper column 41 of the heating / cooling stand 40 and a pressing drive unit 422 such as an air cylinder that swings the swinging table 421. Prepare. An advancing / retreating drive unit 424 made of an air cylinder or the like is attached to the rocking base 421, and a pressing bracket 429 is fixed to the tip of an advance / retreat rod 428 of the advance / retreat driving unit 424. The roller bracket 432 is rotatably supported by a rotation shaft 431 provided on the pressing bracket 429, and the pressing roller 425 is rotatably supported by the roller bracket 432. The rotation shaft 431 is disposed substantially horizontally and substantially orthogonal to the advance / retreat rod 428, and the pressing roller 425 is disposed substantially horizontally and substantially orthogonal to the rotation shaft 431.

  The swing base 421 swings around the swing support point 426. The advance / retreat drive unit 424 swings with the swing table 421 and moves forward and backward along the radial direction from the rotation center C of the workpiece W. The pressing roller 425 is swung and moved back and forth by the advance / retreat drive unit 424, and is further swung by the rotating shaft 431. Therefore, the pressing roller 425 abuts on the workpiece W on the jig 100 and rotates around a substantially horizontal axis.

  As shown in FIGS. 13A to 13C, each heating unit 450 accommodates a heating coil 451 that induction-heats the workpiece W on the jig 100 at the heating position P3, and a transformer or the like housed therein. A support box 452 for supporting the coil 451 and a displacement means 460 for displacing the heating coil 451 by displacing the support box 452 are provided. The heating unit 450 is further provided with a position detection unit 480 for detecting the surface position of the workpiece W. In this embodiment, a position adjustment handle 461 and the like for adjusting in advance the vertical and horizontal directions of the heating coil 451, the distance from the rotation center C of the workpiece W, and the like are provided, but detailed illustration is omitted. Yes.

As shown in FIGS. 13A and 13C, the heating coil 451 has a shape that can be disposed opposite to the surface of the part disposed at the heating position P <b> 3 in the entire circumference of the workpiece W with a predetermined gap. In the present embodiment, the shape corresponds to the arc shape of the heated portion of the work W in plan view, and has a vertical cross-sectional shape corresponding to the vertical cross-sectional shape of the work W.
For example, the heating coil 451 may have a shape in which a pipe-shaped, rod-shaped, or plate-shaped coil material having a substantially constant cross section is repeatedly meandered in a predetermined region in the circumferential direction of the workpiece W. Specifically, as shown in FIG. 17 (a), the square pipes are joined so that the hollow portion is continuous over the entire length, the coolant inlets 451b and the outlets 451c are provided at both ends, and the parts facing the workpiece W are The zigzag shape may be bent by a plurality of bent portions 451d. As shown in FIG. 17B, the portion facing the workpiece W may have a zigzag shape in which a pipe having a round cross section is bent by a plurality of bending portions 451e.
The support box 452 may energize the heating coil 451 during heating and may stably support the heating coil 451.

  As shown in FIGS. 13 (a) and 13 (b), the displacing means 460 includes a vertical displacement portion 462 for vertically displacing the support box 452, and the support box 452 horizontally along the radial direction from the rotation center C of the workpiece W. A horizontal displacement portion 463 that is displaced in the direction.

The vertical displacement unit 462 includes a displacement frame 42 fixed on the heating / cooling frame 40, a lower frame 464 disposed on the displacement frame 42, and a vertical drive mechanism 465 that moves the lower frame 464 up and down with respect to the displacement frame 42. With.
The vertical drive mechanism 465 is fixed to the lower frame 464 and disposed in the vertical direction. The displacement guide rod 466 and the longitudinal displacement screw shaft 467 are fixed to the displacement frame 42 and support the displacement guide rod 466 so as to be movable up and down. A bearing 468, a vertical drive motor 469 composed of a servo motor or the like fixed to the displacement gantry 42, and a connecting body 471 provided on the displacement gantry 42 and vertically moving the vertical displacement screw shaft 467 by the rotation of the vertical drive motor 469. Prepare.

  The horizontal displacement portion 463 includes a first displacement rail 472 disposed on the lower platform 464 in a direction substantially perpendicular to the radial direction of the workpiece W, an upper platform 473 movable on the first displacement rail 472, and an overhead A first displacement driving mechanism 474 that moves the table 473 along the first displacement rail 472; and a second displacement rail 475 disposed on the upper table 473 along the radial direction of the workpiece W. And a second displacement drive mechanism 476 for moving the support box 452 supported on the rail 475 along the second displacement rail 475.

  The first and second displacement drive mechanisms 474 and 476 are disposed along the first or second displacement rails 472 and 475 connected to the displacement drive motor 477 made of a servo motor and the displacement drive motor 477, respectively. A lateral displacement screw shaft 478 that is rotationally driven, and a displacement protrusion 479 that is provided on the gantry 473 or the support box 452 and screwed with the lateral displacement screw shaft 478 are provided. If the heating coil 451 can be aligned in advance in a direction substantially orthogonal to the radial direction of the workpiece W, the first displacement drive mechanism 474 may not be provided.

As shown in FIG. 11, the position detection unit 480 is disposed on the upstream side of each heating position P3. In this embodiment, it arrange | positions in the position corresponding to the radiation stand 111 of the jig | tool 100 arrange | positioned in the upstream of every two heating positions P3.
As shown in FIG. 14, each position detection unit 480 is mounted on a position detection table 44 provided on the position detection column 43 of the heating / cooling frame 40. Each position detector 480 includes a radial position detector 483 mounted on the position detection column 43 via a first advance / retract mechanism 481 and an axial position detector 484 mounted via a second advance / retract mechanism 482. Prepare. The radial position detector 483 and the axial position detector 484 are arranged in a direction orthogonal to each other.

  The first and second advancing / retracting mechanisms 481 and 482 include an advancing / retreating drive means 485 made of an air cylinder or the like, and a plurality of guide rods 487 parallel to the rods 486 of the advancing / retreating drive means 485. The forward / backward mechanisms 481 and 482 are prevented from falling along the detection direction of the position detectors 483 and 484 by the rod 486 and the guide rod 487.

The radial position detector 483 and the axial position detector 484 are respectively a heat-resistant contact 488 that can roll while abutting on the surface of the work W, and a contact while urging the contact 488 toward the work W side. And a change amount detection unit 489 for detecting the amount of advance / retreat 488. As each change amount detection unit 489, for example, an air cylinder with a linear sensor can be used.
The radial position detector 483 detects a change in the surface position of the workpiece W along the radial direction from the rotation center C of the workpiece W, and the axial position detector 484 is a surface position of the workpiece along the axis of the rotation center C of the workpiece W. Detect changes.

In such a heating section 400, in order to arrange the workpiece W at the heating position P3, the jig 100 is arranged at a predetermined position by the transport loader unit 220 shown in FIG.
As shown in FIG. 15A, all the heating coils 451 are separated from the rotation center C of the workpiece W by the horizontal displacement portion 463 to form a space in which the workpiece W can be raised and lowered. At that time, the pressing roller 425 shown in FIG. 12 and the position detection tools 483 and 484 shown in FIG. 14 are also separated from the rotation center C of the workpiece W as much as possible. In this state, as shown in FIG. 9, the jig 100 is lowered by lowering the elevating base portion 240.

  When the jig 100 is lowered, as shown in FIG. 12, in the circumferential positioning means 411 of the jig holding mechanism 410, the cam follower 125 provided at the tip of the radiating frame 111 is inserted into the guide groove 419a of the guide rail 419. The jig 100 is aligned in the circumferential direction. When the jig stopper 413 of the height direction positioning means 412 is in a protruding state, the bottom portion on the front end side of the radiation frame 111 of the jig 100 abuts on the support end 418 of the jig stopper 413, and the workpiece W on the jig 100 is predetermined. Placed in position.

  In the jig holding mechanism 410, the positions of the tips of the plurality of radiation mounts 111 of the jig 100 are regulated in the circumferential direction and the height direction by the circumferential direction positioning means 411 and the height direction positioning means 412. Thereby, the jig | tool 100 can be arrange | positioned stably at the time of a heating, and the workpiece | work W can be rotated on a jig | tool stably. Even when a magnetic force acts when the workpiece W is induction-heated in the circumferential direction of the jig 100, or when an inertial force acts when the work is rotated or stopped, the jig 100 can be prevented from being displaced. .

In the heating section 400, the work W on the jig 100 is heated as follows.
As shown in FIG. 15B, the heating coil 451 of each heating unit 450 is moved by the vertical displacement unit 462 and the horizontal displacement unit 463 in a state where the workpiece W on the jig 100 is arranged at a predetermined position of the heating section 400. The heating coil 451 is disposed opposite to the surface of the workpiece W at each heating position P3.

  In this state, the workpiece W is rotated along the ring shape by the rotating roller 112 of the jig 100. In the work pressing part 420, as shown in FIG. 12, the pressing roller 425 is advanced by the advance / retreat driving part 424 and is lowered by the pressing drive part 422. The pressing roller 425 presses the uppermost surface or edge of the workpiece W, and rotates following the surface of the workpiece W. The workpiece W is stably rotated by being pressed by the pressing roller 425 from above.

In each position detection unit 480, as shown in FIG. 14, the contact 488 of the radial position detection tool 483 and the axial position detection tool 484 is brought into contact with the workpiece W. When the workpiece W rotates, the contact 488 in contact with the surface moves forward and backward according to the displacement of the surface of the workpiece W while rolling. By detecting the displacement amount of the contact 488 in the change amount detection unit 489, the vertical displacement and the horizontal displacement of the surface of the workpiece W are detected.
For example, an arbitrary position in the circumferential direction of the work W is used as a reference position, and the amount of displacement from the reference position at each position in the circumferential direction of the work W is detected by measuring the amount of movement of the contact 488. Since the workpiece W is an annular body, the workpiece W returns to its original position by one rotation.

  The displacement amount of the surface of the workpiece W measured by the position detectors 483 and 484 of the position detectors 480 is transmitted to a control unit (not shown). In the control unit, based on the amount of displacement of the workpiece W and the rotational speed of the rotation drive motor 255, the timing and the position at which each part of the surface of the workpiece W that has passed each detection position passes through the respective heating unit 450 immediately downstream. Is obtained with high accuracy. Therefore, when each part passes through the heating position P3, the gap between the heating coil 451 and the surface of the workpiece W can be constantly stabilized by displacing the heating coil 451 so as to correspond to the position by the displacing means 460. it can.

  In this state, the work W is heated by energizing the heating coils 451 from the support boxes 452 so as to perform induction heating. As a result, the entire circumference of the workpiece W is heated uniformly and accurately.

[Cooling section]
As shown in FIGS. 2, 12, and 13, the cooling section 500 includes a water tank 510 provided below the heating section 400, a plurality of cooling jackets 520 serving as cooling units disposed in the water tank 510, and heating A plurality of guide rails 419 common to the section 400 and a plurality of abutting protrusions 525 that support the bottom of the radiation base 111 of the jig 100 are provided.
The water tank 510 is provided so as to surround the jig 100 and the workpiece W so as to prevent the dispersion of the coolant. The plurality of cooling jackets 520 are disposed so as to face the inner peripheral side and the outer peripheral side of the work W so as to spray the coolant to the work W, and are disposed substantially uniformly at a plurality of positions in the circumferential direction of the work W. .

  In order to cool the workpiece W in such a cooling section 500, the jig stopper 413 of the height direction positioning means 412 in the heating section 400 is swung downward and released as shown in FIG. As shown in FIG. 9, the jig 100 that supports the workpiece W is lowered by the transport loader unit 220. The jig 100 may be lowered as it is without being raised at one end. The workpiece W on the jig 100 may be lowered while being rotated.

When the elevating base portion 240 of the transport loader portion 220 is lowered, the cam follower 125 of the jig 100 is guided by the guide rail 419 and descends as shown in FIG. Stops. The rotation driving means 246 and the connection means 132 and 133 are disposed above the cooling section 500.
As shown in FIG. 15C, the coolant is sprayed from the cooling jacket 520 while rotating the workpiece W in a state where the workpiece W is disposed at a predetermined position of the cooling section 500. Thereby, the whole workpiece | work W can be cooled uniformly.

[Parts replacement section]
The component replacement section 600 as the setup section shown in FIGS. 1 and 2 is used when replacing the components of the heating section 400 and the cooling section 500. In this embodiment, an example in which the heating coil 451 of the heating section 400 is exchanged according to a work will be described.
As shown in FIGS. 1 and 2, the component replacement section 600 includes a component replacement rack 50, a component replacement rail 610 provided on the component replacement rack 50, and a component replacement carriage 615 that can move on the component replacement rail 610. And a component replacement jig 620 placed on the component replacement cart 615.

The component replacement jig 620 conveys the heating coil 451 of the heating section 400, and includes a connection protrusion 131 similar to the jig 100, and a plurality of support arms 621 provided radially from the connection protrusion 131, Is provided. The connection protrusion 131 protrudes upward from the center of the plurality of support arms 621, and has a locking hole 134 as in the jig 100. Therefore, it can be suspended by the suspension means 245 of the transport mechanism 200.
The plurality of support arms 621 are provided radially from the connection protrusions 131 so as to be oriented corresponding to the support boxes 452 of the plurality of heating units 450 in the heating section 400. Although not shown in detail at the tip of each support arm 621, a holding portion for holding the heating coil 451 is provided.

The component replacement carriage 615 places the component replacement jig 620 in a state where the support arms 621 of the component replacement jig 620 are aligned with the directions of the respective support boxes 452, and between the setup position P4 and the suspension position P5. It is configured to be movable.
In a state where the parts replacement carriage 615 is stopped at the hanging position P5, the connection protrusion 131 of the parts replacement jig 620 is arranged at a position where it can be connected by the lifting base part 240 of the transport loader part 220.

In such a component replacement section 600, in order to replace the heating coil 451, the plurality of heating coils 451 are held in the respective support arms 621 in a predetermined direction by the component replacement jig 620 at the setup position P4. The parts replacement carriage 615 is moved to the hanging position P5. The transport loader unit 220 of the transport mechanism 200 is moved to the upper part of the component replacement section 600, and the elevating base unit 240 is lowered. In the same manner as the jig 100, the connection protrusion 131 is connected to the hanging protrusion 247 of the lift base part 240.
In this state, the lift base unit 240 is raised, and then the transport loader unit 220 is moved to the upper part of the heating section 400. By lowering the elevating base portion 240, each heating coil 451 held by the component replacement jig 620 is arranged at a close position corresponding to each support box 452. Then, each heating coil 451 is attached to each support box 452.

[Hardening method]
Next, a method for quenching the workpiece W using the heat treatment apparatus 10 will be described.
In the quenching method of the present embodiment, a preparation process for setting each part according to the workpiece W, a loading process for loading the workpiece W and placing it on the jig 100, and conveying the jig 100 on which the workpiece W is loaded. A heating process for induction heating the work W on the jig 100, a cooling process for cooling the work W on the jig 100, and an unloading process for carrying out the work W after quenching.

In the preparation process, each part is set according to the size and shape of the workpiece W to be heat-treated. The component parts of the heating unit 450 such as the heating coil 451 can be mounted on the heating unit 450 using the component replacement section 600 and the component replacement jig 620 shown in FIGS. 1 and 2.
In the component replacement section 600, the heating coils 451 are respectively held by the support arms 621 of the component replacement jig 620 on the component replacement cart 615. As shown in FIG. 16C, the component replacement jig 620 is transported by the transport loader unit 220 of the transport mechanism 200, and each heating coil 451 held by the component replacement jig 620 is replaced with a support box 452 of each heating unit 450. It arranges in the position corresponding to. In this state, each heating coil 451 is attached to the support box 452. After the mounting, the component replacement jig 620 returns to the component replacement section 600 by operating the transport mechanism 200 in the reverse direction.

In the carry-in process, the work W to be heat-treated is carried in by the carry-in / out section 300 shown in FIGS. 1 and 2 and placed on the jig 100 so as to be transportable.
At the loading / unloading position P1 of the loading / unloading section 300, the workpiece W is placed on the jig 100 in a state where the jig 100 is disposed on the loading / unloading carriage 315. As shown in FIG. 3, the workpiece W is placed on the plurality of rotating rollers 112 of the jig 100 so as to surround the central structure 130 and have one end face facing downward.
By moving the loading / unloading carriage 315 to the suspension position P2 and stopping it, the jig 100 on which the workpiece W is placed is arranged at a predetermined position.

In the transporting process, the jig 100 on which the workpiece W is placed is suspended from the transporting / unloading section 300 shown in FIGS. 1 and 2 by the transport loader unit 220 of the transport mechanism 200 and transported to the heating section 400.
As shown in FIG. 16A, the lifting base portion 240 of the transport loader unit 220 in the transport mechanism 200 is lowered, and as shown in FIGS. 10A to 10C, the hanging position P2 of the loading / unloading section 300. The suspending means 245 of the elevating base portion 240 is connected to the central structure portion 130 of the jig 100 arranged in the above.
After raising the raising / lowering base part 240 of the conveyance loader part 220, the conveyance loader part 220 is moved onto the heating section 400 as shown in FIG. As shown in FIG. 15A, the jig 100 is lowered and the workpiece W placed on the jig 100 is placed in the heating section 400.

In the heating process, the workpiece W placed on the jig 100 is induction-heated by the heating section 400 shown in FIGS.
As shown in FIG. 15 (b), each heating coil 451 is arranged to face each heating position P 3 on the surface of the workpiece W with a predetermined gap by the displacement means 460. In a state where the jig 100 is held by the jig holding mechanism 410, the rotation roller 112 is rotated by the rotation driving unit 30, and the workpiece W is rotated along the ring shape. The peripheral speed of the workpiece W is kept constant by the rotation drive unit 30, and the interval between the workpiece W and each heating coil 451 is kept constant by the position detectors 483 and 484 and the displacement means 460. In this state, power is supplied to all the heating coils 451 from the respective support boxes 452 for a predetermined time to uniformly heat the entire circumference of the work W.

  In the cooling step, as shown in FIG. 15C, the elevating base portion 240 of the transport loader portion 220 is lowered after heating, and the workpiece W placed on the jig 100 is placed in the cooling section 500. While rotating the workpiece W, a coolant is sprayed onto the workpiece W from the cooling jackets 520 provided at a plurality of positions to cool the entire workpiece W.

After the cooling step, as shown in FIG. 16 (b) again, the elevating base 240 is raised and moved to the hanging position P2 of the loading / unloading section 300 as shown in FIG. In the loading / unloading section 300, the jig 100 is placed on the loading / unloading carriage 315, moved to the loading / unloading position P1, and carried to the subsequent process.
Thereby, the hardening process of the workpiece | work W is complete | finished.

[Effect of jig for heat treatment equipment]
According to the heat treatment apparatus jig 100 of the heat treatment apparatus 10 as described above, the work W can be suspended by the transfer connecting means 132 while being supported by the work support section 110 and placed on the work support section 110. The driving force for rotating the workpiece W along the ring shape can be input to the rotation driving mechanism 150 as the transmission unit by the driving connection means 133. Therefore, the workpiece W can be supported using the same jig 100 from the time of conveyance to the time of heating, and it is possible to eliminate the trouble of replacing and positioning the workpiece W when the workpiece W is conveyed and heated.

  These transport connection means 132 and drive connection means 133 are provided in the central structure 130. Therefore, by connecting the central structure part 130 to the suspension means 245 and the rotation drive means 246, the workpiece W can be suspended and conveyed, and the workpiece W can be rotated and heated. Therefore, it is not necessary to separately provide a structure for supporting the workpiece W during conveyance and a structure for supporting the workpiece W during heating, and both connections can be realized by connecting the central structure portion 130. Therefore, the configuration can be simplified.

  In addition, the workpiece W can be placed on the rotating roller 112, and the workpiece W can be supported and rotated by the rotating roller 112 of the workpiece support unit 110 without being fixed. Therefore, there are few restrictions on the size and shape of the workpiece W, and the degree of freedom is large. Even workpieces W having different shapes can be used in common, and the versatility is high. Therefore, the jig 100 for a heat treatment apparatus having a simple configuration that has high versatility and can support the workpiece W without being transferred during transfer and heating is obtained.

  In this heat treatment apparatus jig 100, the connection position of the drive connection means 133 is disposed above the work W supported by the work support portion 110. Therefore, it is possible to prevent the coolant from coming into contact with the rotation driving means 246 when the workpiece W is cooled.

  In the heat treatment apparatus jig 100, the rotation drive mechanism 150 includes a drive shaft 152 and a plurality of driven shafts 153 connected to the plurality of rotation rollers 112, and includes a drive gear 154 of the drive shaft 152 and a plurality of driven shafts 153. Each driven gear 155 meshes. Therefore, the plurality of driven shafts 153 can be rotationally driven by rotating the drive shaft 152 by the driving force input from the drive connecting means 133. Therefore, by adjusting the driving force, the rotation speed of the plurality of rotating rollers 112 can be adjusted, and the rotation speed of the workpiece W can be easily and stably adjusted.

  In the heat treatment apparatus jig 100, the work support unit 110 includes a work alignment roller 121 that aligns the inner periphery or the outer periphery of the work W. Therefore, if the workpiece alignment roller 121 is arranged in a range in which the displacement of the workpiece W is allowed, the workpiece W is placed with the center of gravity of the workpiece W being extremely eccentric with respect to the heat treatment apparatus jig 100. Can be prevented, and balance can be maintained during conveyance. Further, it is possible to prevent the workpiece W from being placed in an extremely eccentric state with respect to the track formed by the plurality of rotating rollers 112, and the workpiece W can be reliably rotated along the ring shape during heating.

[Effect in heat treatment apparatus and method]
According to the heat treatment apparatus 10 using the heat treatment apparatus jig 100, the work W can be transported between the loading / unloading section 300 and the heating section 400 while being placed on the same jig 100. Can be heated. Therefore, if it is the workpiece | work W which can be mounted and rotated on the jig | tool 100, the workpiece | work W can be conveyed and heated with the loading / unloading section 300 being aligned and mounted on the jig | tool 100. FIG.
As a result, even workpieces W of different shapes can be used in common and have high versatility, and it is not necessary to replace the workpiece W between the loading / unloading section 300 and the heating section 400, and the workpiece W can be easily transported and heated. The jig 100 and the transport mechanism 200 can be used in common and the configuration is simple.
Accordingly, the heat treatment apparatus 10 having a simple configuration that is highly versatile and can easily transport and heat the workpiece W can be obtained.

  In this heat treatment apparatus 10, the lifting base portion 240 is provided with a suspension means 245 connected to the transfer connection means 132 and a rotation drive means 246 connected to the drive connection means 133, and the suspension means 245 and the transfer connection By connecting the means 132, the rotation drive means 246 and the drive connection means 133 can be connected. Therefore, a plurality of connection means can be integrated, and a plurality of connection operations from conveying the workpiece W to heating can be performed together. Therefore, the configuration and operation can be further simplified.

  In this heat treatment apparatus 10, the rotation drive means 246 and the drive connection means 133 are configured to be able to be engaged / disengaged in the vertical direction, and the suspension means 245 and the transfer connection means 132 can be engaged / disengaged in the horizontal direction. Therefore, if the raising / lowering base part 240 is arrange | positioned and lowered with respect to the jig | tool 100, the rotational drive means 246 and the drive connection means 133 can be connected. Since the connection direction of the suspension means 245 on which the load of the workpiece W acts and the connection means 132 for conveyance are lateral directions, sufficient connection strength can be ensured even if the load of the workpiece W is large. Since the connection direction of the rotation drive unit 246 and the drive connection unit 133 is different from the connection direction of the suspension unit 245 and the transport connection unit 132, the suspension unit 245 and the transport connection unit 132 are maintained in a connected state. If possible, the connection state between the rotation drive unit 246 and the drive connection unit 133 can be maintained, and a mechanism for maintaining the connection state of the rotation drive unit 246 is unnecessary. Therefore, the connection structure of each part can be simplified.

  In the heat treatment apparatus 10, a connection protrusion 131 is provided coaxially with the drive shaft 152. Therefore, if the connection protrusion 131 is connected to the suspension means 245 while the drive shaft 152 is connected to the rotation drive means 246, the rotation roller 112 can be rotated by the rotation drive means 246 and placed on the workpiece support part 110. The suspended workpiece W can be suspended by the suspension means 245 in a well-balanced manner.

  In the heat treatment apparatus 10, a meshing clutch mechanism 140 that is provided on the drive shaft 152 and can be locked in the vertical direction is configured by lowering the output shaft 256 of the rotary drive motor 255. Therefore, it can be locked only by lowering, and the operation can be simplified.

  In the heat treatment apparatus 10, the transfer connecting means 132 has a locking hole 134 larger than the locking pin 251 at a position corresponding to the locking pin 251 in the central structure portion 130, and the locking hole 134 is more than the locking pin 251. It has a wide, substantially triangular shape. Therefore, if the locking pin 251 is raised with respect to the locking hole 134 by being suspended by the suspension means 245, the locking hole 134 of the central structure 130 is guided by the locking pin 251 and centered. The jig 100 can be easily suspended while being centered. Therefore, the jig 100 supporting the workpiece W can be stably conveyed.

  In the heat treatment apparatus 10, the transport mechanism 200 includes the lifting / lowering lifter 261 that lifts the lifting / lowering base part 240 on the traversing base part 230, and the lifting / lowering biasing means 262 that biases the lifting / lowering base part 240 upward. When raising / lowering, the raising / lowering urging means 262 can urge the raising / lowering base part 240 upward. Therefore, even if the weight of the workpiece W is large, the driving force of the lifting lifter 261 necessary for raising the lifting base 240 can be reduced. On the other hand, when the workpiece W is lowered, the lifting base portion 240 loaded with the weight of the workpiece W is lowered. Therefore, the driving force of the lifting lifter 261 required to lower the lifting base portion 240 may be small. As a result, even if the weight of the workpiece W is large, the driving force required for the lifting lifter 261 can be reduced, and the lifting lifter 261 can be downsized.

  In this heat treatment apparatus 10, a cooling section 500 is provided below the heating section 400, and the workpiece W placed on the jig 100 can be cooled by being lowered by moving the jig 100. . Therefore, if the jig 100 is lowered without moving in the horizontal direction, the workpiece W can be easily placed in the cooling section 500, and cooling can be started in a short time after heating. In addition, if the cooling section 500 is provided under the heating section 400, the cooling liquid is difficult to come into contact with the heating unit 450, so that the waterproof structure can be simplified or omitted.

  In this heat treatment apparatus 10, even if the cooling section 500 is provided below the heating section 400, if the jig 100 is supported by the jig stopper 413 from below, the jig 100 is stably placed at a predetermined position during heating. Can be heated accurately. Moreover, since the jig stopper 413 of the heating section 400 can be released downward, when the jig 100 is moved to the cooling section 500 after heating, it can be released easily and in a short time, and the heated workpiece W can be cooled. Start in less time.

  In the heat treatment apparatus 10, the rotation driving means 246 is provided on the lift base portion 240. Therefore, the rotation driving means 246 can be disposed above the workpiece W in the cooling section 500, and the coolant is difficult to contact the rotation driving means 246, so that the waterproof structure can be simplified or omitted.

  In the heat treatment apparatus 10, the heating section 400 includes a circumferential direction positioning unit 411 that positions the jig 100 in the circumferential direction. Therefore, in addition to being able to position the jig 100 conveyed to the heating section 400 by the conveyance mechanism 200 in the horizontal direction by the circumferential positioning means 411, the jig 100 is moved by a magnetic force during induction heating, It is possible to prevent the jig 100 from moving due to the reaction force when the rotation of W is changed. Therefore, it is possible to heat accurately.

  In the heat treatment apparatus 10, a plurality of heating units 450 are arranged in the heating section 400 at substantially equal intervals in the circumferential direction. Therefore, if the workpiece W is heated by the plurality of heating units 450 while rotating the workpiece W by the workpiece support unit 110, the entire circumference can be evenly heated even for the large workpiece W.

  In the heat treatment apparatus 10, the heating coil 451 and other components of the heating unit 450 can be held at a position corresponding to the arrangement of the heating unit 450 in the heating section 400 on the component replacement jig 620 arranged in the component replacement section 600. The component replacement jig 620 can be connected to the suspension means 245 of the transport mechanism 200. Therefore, the work of changing the setup can be easily performed.

The above-described embodiment can be appropriately changed within the scope of the present invention. For example, in the above description, the heat treatment apparatus that quenches the workpiece W by heating and cooling the workpiece W has been described. However, the present invention can be applied to other heating apparatuses that do not perform cooling.
The workpiece W to be heated is not limited to an annular shape having a circular cross section, and the present invention can be applied to an annular shape workpiece having another shape such as an ellipse.
The example of performing so-called single quenching in which the heating coil 451 is arranged and heated at a plurality of positions in the circumferential direction of the workpiece W has been described, but so-called movement in which the heating coil 451 is arranged and heated at one location in the circumferential direction of the workpiece W is described. The same applies to quenching. In that case, in the heating section 400, the heating coil 451 and the displacement means 460 may be arranged and operated at one heating position.
The above is an example in which the surface of the workpiece W is hardened. For example, a heating coil is disposed on the inner surface and the outer surface of the workpiece W opposite to each other to heat the workpiece W to the deep portion of the workpiece W. Good. In that case, the heating coil arranged on the inner surface and the heating coil arranged on the outer surface can be configured by the same or different coils, and both may be configured to adjust the position by the same displacement means 460. .

As in the illustrated example, the work support part 110 does not have a plurality of radiation mounts 111 extending radially from the central structure part 130, and a planar or circular plate or a plurality of materials can be planarly viewed in plan view. It is also possible to configure with a three-dimensionally combined frame or the like. The workpiece support 110 is for placing the workpiece W with the end face facing down, but the structure is not particularly limited as long as the workpiece W can be supported and rotated along the ring shape. For example, the workpiece W may be placed in an inclined or standing state and rotated along the ring shape.
The rotational drive unit 30 is configured to rotationally drive all of the plurality of rotational rollers 112 provided on the jig 100 via the rotational drive mechanism 150. However, if the workpiece W can be rotationally driven, A part may be rotationally driven.
In the above description, the positions of the subsequent two heating coils 451 are adjusted based on the displacement amount of the surface of the workpiece W detected by the position detection unit 480. However, the number and position can be changed as appropriate.

In the above-described embodiment, an example in which the outer ring of the bearing is heated as the work W has been described. However, even the inner ring can be heated, and in this case, the heating coil 451 is formed in the shape of the outer peripheral surface of the work W and from the outside. What is necessary is just to oppose.
Further, the workpiece W is not limited to a bearing, and the present invention can be similarly applied even to a ring-shaped workpiece used for other purposes, and a portion to be heated or heat-treated is also an inner circumference of the workpiece W. It is not restricted to a surface or an outer peripheral surface. For example, when heating the side surface of the workpiece W, the heating coil 451 having a shape corresponding to the side surface shape continuous in the circumferential direction can be used. In this case, as the heating coil 451, as shown in FIG. 18, a portion facing the workpiece W is formed of a square pipe, and the square pipe is provided between the bent portions 451f and the bent portions 451f inside and outside the workpiece. It may be formed in a zigzag shape by bending with the bent portion 451g. The heating coil 451 may be configured such that the circumferential length at a portion far from the rotation center C is longer than the circumferential length at a portion near the rotation center W.

In the above embodiment, in order to keep the gap between the heating coil 451 and the workpiece W constant, the rotational speed of the rotation drive motor 255 and the detection values of the position detectors 483 and 484 are used. However, as indicated by phantom lines in FIG. 12, a part of the work pressing parts 420 is provided with a speed detecting part 427 for detecting the rotation of the pressing roller 425 and measuring the peripheral speed of the work surface, and the rotational drive motor 255. Instead of the rotation speed, the detection value of the speed detection unit 427 may be used.
In this way, even when slippage occurs between the rotating roller 112 and the workpiece W, and the speed of the rotation drive unit 30 and the actual rotation speed of the workpiece W are shifted, the heating coil 451 and the workpiece W are accurately detected. Can be kept constant.

  In the above embodiment, in the heating section 400, the heating coil 451 is caused to follow the displacement of the workpiece W at each heating position P3 based on the displacement amount and the rotation speed of the workpiece W measured by the position detectors 483 and 484. Each heating coil 451 and the workpiece W are arranged at a predetermined relative position. However, it is also possible to arrange the heating coil 451 and the workpiece W at a predetermined relative position by other methods. For example, the workpiece W arranged in the heating section 400 is measured in advance before the start of heating to determine the position of the center of the workpiece W by measuring the amount of displacement of the workpiece W. It is possible to heat the workpiece W without displacing the heating coil 451 during heating by displacing 451 and disposing it at a predetermined relative position and energizing in that state.

W Work C Rotation center P1 Loading / unloading position P2 Hanging position P3 Heating position P4 Setup position P5 Hanging position 10 Heat treatment apparatus (heating apparatus)
20 Frame 21 Horizontal frame material 30 Rotation drive unit 40 Heating / cooling frame 41 Stopper column 42 Displacement frame 43 Position detection column 44 Position detection table 50 Parts replacement frame 100 Jig 110 Work support unit 111 Radiation frame 112 Rotating roller 113 Core material 114 Cylinder Material 115 Heat-resistant bearing 121 Workpiece alignment roller (work alignment means)
123 Bottom positioning hole 125 Cam follower 130 Central structure 131 Connection protrusion 132 Transport connection means 133 Drive connection means 134 Locking hole 140 Engagement clutch mechanism 141 First engagement member 142 Second engagement member 150 Rotation drive mechanism (transmission part)
151 Gear box 152 Drive shaft 153 Drive shaft 154 Drive gear 155 Drive gear 156 Universal joint 200 Transport mechanism 210 Transport rail 212 Rack 213 Rail stopper 220 Transport loader section 230 Traverse base section 231 Traverse mechanism 232 Traverse stand 233 Traverse support 234 Traverse support Body 235 Traverse drive motor 236 Output shaft 237 Pinion 240 Lifting base 242 Lifting support base 243 Lifting support base 245 Suspension means 246 Rotation drive means 247 Suspension protrusion 248 Locking tool 249 Holding body 251 Locking pin 255 Rotation drive motor 256 Output shaft 257 Engagement biasing means 260 Lifting mechanism 261 Lifting lifter 262 Lifting biasing means 263 Lifting guide portion 265 Lifting drive motor 266 Output shaft 267 Screw shaft 268 Lifting plate 271 Lifting connection Rod 273 Connecting plate 274 Lifting guide rod 275 Lifting bearing 277 Fluid pressure cylinder 278 Advance / retreat rod 279 Position detection sensor 300 Loading / unloading section 311 Loading / unloading table 313 Loading / unloading rail 315 Loading / unloading vehicle 317 Transfer drive unit 320 Jig support structure 321 323 Central support base 325 End support base 327 Positioning recess 400 Heating section 410 Jig holding mechanism 411 Circumferential positioning means 412 Height direction positioning means 413 Jig stopper 414 Stopper drive cylinder 415 Rod 416 Link 417 Stopper fulcrum 418 Support end 419 Guide Rail 419a Guide groove 420 Work pressing part 421 Swing base 422 Press driving part 424 Advance / retreat driving part 425 Pressing roller 426 Swing fulcrum 427 Speed detection part 428 Advance / retreat rod 429 Push Even bracket 431 Rotating shaft 432 Roller bracket 450 Heating portion 451 Heating coil 452 Support box 460 Displacement means 461 Position adjustment handle 462 Vertical displacement portion 463 Horizontal displacement portion 464 Lower base 465 Vertical drive mechanism 466 Displacement guide rod 467 Vertical displacement screw shaft 468 Displacement bearing 469 Vertical drive motor 471 Connecting body 472 First displacement rail 473 Upper base 474 First displacement drive mechanism 475 Second displacement rail 476 Second displacement drive mechanism 477 Displacement drive motor 478 Lateral displacement screw shaft 479 Displacement protrusion 480 Position detection Part 481 first advance / retreat mechanism 482 second advance / retreat mechanism 483 radial position detector 484 axial position detector 485 advance / retreat drive means 486 rod 487 guide rod 488 contact 489 change amount detector 500 cooling section 510 water tank 520 cooling Jacket 525 Abutting protrusion 600 Parts replacement section (setup section)
610 Component replacement rail 615 Component replacement cart 620 Component replacement jig (setup jig)
621 Support arm

Claims (15)

A jig for a heating device for supporting an annular workpiece during conveyance and heating,
A central structure, wherein is arranged in conjunction with the central structure, and a workpiece support for the workpiece is placed surrounding the central structure,
The workpiece support has a plurality of rotating rollers for mounting the workpiece during the transport and during the heating was arranged around the central structure in the circumferential direction,
It said central structure, the workpiece and the conveying connection means for suspending the support portion in a state of mounting the workpiece, a rotation drive mechanism for rotating the plurality of rollers, the driving force to the rotary drive mechanism Driving connection means for inputting
Wherein the driving force inputted to the rotation driving mechanism by rotationally driving the plurality of rotary rollers rotate along the workpiece to the ring shape, the heating apparatus jig. The driving connection means, wherein are disposed from the workpiece supported by the workpiece support upwardly, the heating device jig of claim 1. The rotation drive mechanism includes a linked drive shaft to the driving connecting means are arranged along a rotation center, and a plurality of driven shaft connected to the plurality of rotary rollers, driving of the drive shaft The jig for a heating device according to claim 1 or 2, wherein the gear and each driven gear of the plurality of driven shafts are meshed with each other.   The work support unit includes work positioning means for positioning an inner periphery or an outer periphery of the work, and the work positioning means protrudes upward from the plurality of rotating rollers. A jig for a heating apparatus according to any one of the above. A heating device jig according to any one of claims 1 to 4,
A carry-in section for placing the workpiece on the jig;
A heating section for heating by the heating unit while rotating the placed the workpiece to the jig,
Wherein while connected to the feeding connection means, heating device and a transport mechanism for transporting between the carry section and the heating section suspending the jig. The transport mechanism includes a base portion movable between the carry-in section and the heating section. The base portion has a suspension means connected to the transport connection means and a drive means connected to the drive connection means. Doo is provided, said drive means and said drive connection means by connecting said carrying connecting means and said suspension means are connected, the heating device according to claim 5.   The drive means and the drive connection means are configured to be detachable in the vertical direction, and the suspension means and the transport connection means are configured to be detachable in the horizontal direction. Heating device. The suspension means has a plurality of the locking pin to slide laterally in a circumferential direction, the carrying connecting means said locking pin is greater than locking into a position corresponding to the locking pins of the central structure has a hole, the width of the locking hole corresponding to the locking pin in the upper, exhibits the locking pin wider substantially triangular shape in the lower, the heating device according to claim 7. The transport mechanism includes a transport rail provided between the carry-in section and the heating section, and the base section includes a traverse base section that moves along the transport rail, and the suspension means. A lifting base portion connected to the transverse base portion so as to be movable up and down, a lifter for raising and lowering the lifting base portion in the transverse base portion, and a biasing means for biasing upward when the lifting base portion is raised The heating apparatus according to claim 6 , comprising:   The heating apparatus according to any one of claims 5 to 9, wherein the heating section includes a circumferential direction positioning unit that positions the jig with respect to a circumferential direction. A setup jig that can be hung on the suspension means; and a setup section on which the setup jig can be arranged, wherein the transport rail extends to the setup section, and the setup jig is heated. The heating device according to claim 9 , wherein the heating device is configured to be able to hold a component of the heating unit at a position corresponding to the arrangement of the heating unit in the section . Consists heating apparatus according to any one of claims 5 to 11, a cooling section under the heating section, the workpiece mounted on the jig by lowering the jig to the cooling section Heat treatment equipment that is placed and cooled.   The heat treatment apparatus according to claim 12, wherein the heating section includes a stopper that supports the jig from below and releases the jig downward.   14. The heat treatment apparatus according to claim 12, wherein the driving unit is provided in the elevating base portion so as to be disposed above the cooling section in a state where the jig is disposed in the cooling section. A method of heating a workpiece that conveys and heats an annular workpiece,
A jig provided with a central structure portion and a plurality of rotating rollers connected to the central structure portion and arranged circumferentially around the central structure portion is disposed in the carry-in section,
The workpiece so as to surround the central structure is placed on the plurality of rotary rollers on,
The transported from the carry section to the heating section suspending said jig with said central structure,
The driving force in the heating section is input to the central structural unit by driving rotation is transmitted to the plurality of rotary rollers, induction heating the workpiece by the heating coil while rotating along the workpiece in said ring shape To heat the workpiece.

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