JP5219632B2 - Ring workpiece quenching equipment - Google Patents

Description

  The present invention relates to a ring-shaped workpiece quenching apparatus for quenching a ring-shaped workpiece, and in particular, by automating a quenching process for a ring-shaped workpiece having a very large diameter used for a wind power generator or the like, However, the ring-shaped workpiece can be easily quenched, and the ring-shaped workpiece can be appropriately prevented from being warped during the quenching process.

  Conventionally, after a ring-shaped workpiece such as an inner ring or outer ring of a bearing is heat-treated in a heat treatment furnace, the ring-shaped workpiece is immersed in a cooling liquid stored in a cooling liquid tank and quenched. Yes.

  In addition, when the ring-shaped workpiece is immersed in the cooling liquid and quenched in this manner, the heat-treated ring-shaped workpiece is restrained in a restraining die in order to prevent the ring-shaped workpiece from being warped. In such a state, it is immersed in a cooling liquid and quenched.

  In recent years, a ring-shaped workpiece with a very large diameter having a diameter of 1500 mm or more has been used in wind power generators and the like, and it has become necessary to quench such a ring-shaped workpiece.

  Here, in the case of quenching a ring-shaped workpiece having such a large diameter, after setting the ring-shaped workpiece heat-treated in a heat treatment furnace to a constraining die by a manual operation using a crane, An appropriate position on the circumference of the ring is tightened with a manual vise or the like to prevent the ring-shaped workpiece from being warped during the quenching process.

  However, it is very troublesome to manually set the ring-shaped workpiece in the restraint die using a crane or tighten the appropriate position of the circumference of the ring-shaped workpiece with a manual vise. There was a problem that a lot of time was required and work efficiency was remarkably lowered.

  Also, when the ring-shaped workpiece is hardened by tightening with a manual vise etc. at an appropriate position on the circumference of the ring-shaped workpiece, the entire ring-shaped workpiece cannot be processed in a uniform restraint state, and warping will occur. There is a problem that it is difficult to sufficiently suppress the occurrence of the above.

  Conventionally, as shown in Patent Document 1, when quenching a ring-shaped workpiece, a ring-shaped upper surface holding member that holds the upper surface side of the ring-shaped workpiece is rotated with a lower surface tapered. There has been proposed a structure in which a ring-shaped workpiece is suppressed from being warped by being pressed by a possible pressing piece.

However, even in this case, there is still a lot of manual work, the work efficiency is very poor, and there is a difference in the pressure that is pressed by the pressing piece, so that the ring-shaped work cannot be pressed uniformly, and the quenching process is performed. There has been a problem that sometimes warping of the ring-shaped workpiece cannot be sufficiently suppressed.
Utility Model Registration No. 2576939

  An object of the present invention is to solve the above-described problems in the case of quenching a ring-shaped workpiece, and in particular, in the case of quenching a ring-shaped workpiece having a very large diameter, the quenching treatment is performed. It is an object of the present invention to automate the work so that the quenching process can be easily performed, and to prevent the ring-shaped workpiece from being warped during the quenching process.

  In the quenching apparatus for ring-shaped workpieces according to the present invention, in order to solve the above-described problems, the ring-shaped workpiece heat-treated in the heat treatment furnace is provided above the coolant tank containing the coolant. A transport device that transports onto a separable holding member, a base member from which the holding member is separated and held on the holding member is transferred from the holding member, and is transferred to the base member An inner peripheral fixing member mounted on the inner peripheral side of the ring-shaped workpiece, a pressing member for pressing the upper surface of the ring-shaped workpiece transferred to the base member, and the inner peripheral fixing member described above on the inner peripheral side of the ring-shaped workpiece And lowering the ring-shaped work together with the base member in a state where the ring-shaped work is pressed by the pressing member, and soaking in the cooling liquid stored in the cooling liquid tank It provided the stage.

  Here, as a pressing member that presses the upper surface of the ring-shaped workpiece transferred to the base member as described above, it is preferable to use a ring-shaped pressing member that presses the entire upper surface of the ring-shaped workpiece.

  Further, in this ring-shaped workpiece quenching apparatus, when the ring-shaped workpiece held on the holding member is transferred from the holding member to the base member, a plurality of rollers are provided on the holding member via a predetermined interval. The members can be provided on both sides in a separable manner, and a plurality of support protrusions can be provided on the upper surface of the base member to be inserted between the roller members to support the ring-shaped workpiece.

  In this way, after the ring-shaped workpiece is held on the holding member, the ring-shaped workpiece guided on the holding member is inserted by inserting the support protrusion provided on the base member between the roller members of the holding member. Can be supported by a plurality of support protrusions in the base member, and in this state, the above-mentioned roller members can be separated on both sides, and the ring-shaped workpiece on the holding member can be transferred to the base member.

  Further, in the state where the ring-shaped workpiece is supported by the plurality of support protrusions in the base member as described above, the ring-shaped workpiece is lowered together with the base member as described above, and is cooled and stored in the cooling liquid tank. When immersed in the liquid, the coolant flows between the ring-shaped workpiece and the base member through the gap between the support protrusions of the base member, and the ring-shaped workpiece is appropriately cooled in the coolant. .

  Also, when the ring-shaped workpiece is lowered together with the base member as described above and immersed in the cooling liquid contained in the cooling liquid tank to be cooled, the ring-shaped work is cooled in the cooling liquid together with the base member. When a rotating device is provided for rotating in the above and the ring-shaped workpiece is rotated together with the base member in the coolant, the ring-shaped workpiece is further appropriately cooled in the coolant.

  Further, in the quenching apparatus for the ring-shaped workpiece, a flange portion that is brought into contact with the upper surface of the ring-shaped workpiece is provided on the upper surface of the inner circumferential fixing member, and the flange portion of the inner circumferential fixing member is interposed. The upper surface of the ring-shaped workpiece can be pressed by the pressing member. In this case, even when the size of the ring-shaped workpiece is changed and the sizes of the pressing member and the ring-shaped workpiece are not matched, the flange portion is provided without replacing the pressing member. In addition, only by replacing the inner peripheral fixing member, the upper surface of the ring-shaped workpiece can be appropriately pressed by the pressing member via the flange portion.

  In the ring-shaped workpiece quenching apparatus according to the present invention, the ring-shaped workpiece heat-treated in the heat treatment furnace is provided with a separable holding member provided above the cooling liquid tank in which the cooling liquid is accommodated by the conveying device. The ring-shaped workpiece is held on the holding member by being conveyed upward.

  Then, the holding member is separated, the ring-shaped workpiece held on the holding member is transferred onto the base member, and the inner periphery is fixed to the inner peripheral side of the ring-shaped workpiece thus transferred to the base member. While attaching a member, the upper surface of this ring-shaped workpiece is pressed by a pressing member.

  Next, the inner peripheral fixing member is mounted on the inner peripheral side of the ring-shaped workpiece as described above, and the ring-shaped workpiece is made into a base by the lifting means while the upper surface of the ring-shaped workpiece is pressed by the pressing member. The ring-shaped work is lowered in the cooling liquid by being lowered together with the member and immersed in the cooling liquid stored in the cooling liquid tank.

  In this way, in the case of quenching a ring-shaped workpiece having a very large diameter, the ring-shaped workpiece that has been heat-treated in a heat treatment furnace as in the prior art is set in a restraint die by a manual operation using a crane or the like. And it is not necessary to tighten the ring-shaped workpiece with a manual vise etc. at an appropriate position on the circumference of the ring-shaped workpiece, and the quenching process can be automated and the quenching process can be performed easily and safely. .

  In the ring-shaped workpiece quenching apparatus of the present invention, the inner peripheral fixing member is mounted on the inner peripheral side of the ring-shaped workpiece transferred to the base member, and the upper surface of the ring-shaped workpiece is pressed by the pressing member. As a result, the occurrence of warpage or the like in the ring-shaped workpiece during the quenching process is sufficiently suppressed, and in particular, a ring-shaped pressing member is used, and the entire upper surface of the ring-shaped workpiece is pressed by this pressing member. By doing so, it is possible to further suppress the occurrence of warpage or the like in the ring-shaped workpiece during the quenching process.

  Hereinafter, a ring workpiece quenching apparatus according to an embodiment of the present invention will be specifically described with reference to the accompanying drawings. The ring workpiece quenching apparatus according to the present invention is not limited to the one shown in the following embodiments, and can be implemented with appropriate modifications within a range not changing the gist of the invention.

  In the quenching apparatus for ring-shaped workpieces in this embodiment, as shown in FIG. 1, a ring-shaped workpiece 2 that has been heat-treated in a heat treatment furnace 1 is cooled by a transfer device 3 using a transfer roller 3a, which will be described later. The ring-shaped workpiece 2 is held on the holding member 10 by being conveyed to a separable holding member 10 provided above the cooling liquid tank 4 in which the liquid 4a is accommodated.

  Here, in this embodiment, the holding member 10 is provided with a plurality of roller members 11 that can be separated on both sides through a required interval, and the roller members 11 on each side that can be separated are provided on the motor. It is moved to both sides and separated by a moving device (not shown) using a driving device 12 composed of gears and gears.

  Further, a base member 21 that is moved up and down by a lifting device 20 described later is provided under the holding member 10, and the ring-shaped workpiece 2 is supported by being inserted between the roller members 11 on the upper surface of the base member 21. A plurality of support protrusions 21a are provided.

  Then, the ring-shaped workpiece 2 is conveyed to the holding member 10 by the conveying device 3 as described above, and the ring-shaped workpiece 2 is held on the roller member 11 in the holding member 10 as shown in FIG. Then, as shown in FIG. 2 (B), the base member 21 is raised by the elevating device 20, and the support protrusion 21 a provided on the base member 21 is inserted between the roller members 11. Then, the ring-shaped workpiece 2 held on the roller member 11 is supported by the support protrusion 21 a provided on the base member 21.

  Then, with the ring-shaped workpiece 2 supported by the support protrusions 21a of the base member 21 as described above, as shown in FIG. 3, the holding member is moved by the moving device (not shown) using the driving device 12 described above. 10, the roller member 11 on each side is moved to both sides to be separated, and the ring-shaped workpiece 2 is transferred from the holding member 10 onto the base member 21.

  Here, in the quenching apparatus for the ring-shaped workpiece in this embodiment, when the base member 21 is lifted and lowered by the lifting device 20, as shown in FIG. 4, a support arm that supports the base member 21 in a suspended manner. 22 is attached to the lower surface on the outer peripheral side of the ring-shaped first bearing member 23, and the connecting portion 24 a extending downward from the suspension frame 24 is attached to the upper surface on the inner peripheral side of the first bearing member 23. The support arm 22 is attached to the suspension frame 24 so that the support arm 22 is rotatable and suspended, and the suspension frame 24 is suspended by a chain 25 provided in the lifting device 20.

  The suspension frame 24 is slidably attached to a vertical guide member 26 a provided on the outer frame frame 26 by a first linear guide 27.

  Then, by winding or sending out the chain 25 in the lifting device 20, the suspension frame 24 is lifted and lowered along the guide member 26 a provided on the outer frame frame 26 by the first linear guide 27. Accordingly, the base member 21 suspended and supported by the support arm 22 is moved up and down.

  Further, in the ring-shaped workpiece quenching apparatus according to this embodiment, a pressing cylinder 30 is provided at the central portion of the suspension frame 24, and the telescopic rod 30 a in the pressing cylinder 30 is lowered through the suspension frame 24. The pressing frame 31 is attached to the tip of the telescopic rod 30a.

  Then, an upper surface on the inner peripheral side of the ring-shaped second bearing member 32 is attached to the lower end of the pressing frame 31, and downward from the lower surface on the outer peripheral side of the ring-shaped second bearing member 32. A ring-shaped pressing member 33 is attached so as to extend, and the pressing member 33 is attached to the pressing frame 31 so as to be rotatable and suspended, and the pressing member 33 is attached to the second linear member. A guide 34 is attached so as to slide up and down along the support arm 22.

  In addition, a holding cylinder 35 is provided on the inner side of the pressing frame 31, and upward from an inner peripheral fixing member 36 that is attached to the expansion / contraction rod 35 a of the holding cylinder 35 on the inner peripheral side of the ring-shaped workpiece 2. The extended suspension part 36 a is locked, and the inner peripheral fixing member 36 is suspended and held above the ring-shaped workpiece 2 held on the base member 21 by the holding cylinder 35.

  Furthermore, in the ring workpiece quenching apparatus according to this embodiment, the suspension frame 24 is provided with the motor 40, and the gear 41 is attached to the rotating shaft 40a of the motor 40 extended downward from the suspension frame 24. In addition, a large-diameter ring gear 42 is provided so as to mesh with the gear 41, and the ring gear 42 is attached to the upper surface on the outer peripheral side of the first bearing member 23 on the side opposite to the support arm 22. .

  In this way, when the motor 40 is rotated, the support arm 22 that supports the base member 21 while the suspension frame 24 is stopped is accompanied by the ring gear 42. While rotating, the pressing member 33 attached to the support arm 22 via the second linear guide 34 rotates together with the support arm 22, while the pressing member 33 is suspended in a rotatable state. The lower pressing frame 31 is maintained in a stopped state without rotating.

  And after making the ring-shaped workpiece 2 heat-processed as mentioned above transfer on the base member 21 from the holding member 10, this ring-shaped workpiece 2 is immersed in the cooling fluid 4a accommodated in the cooling fluid tank 4. FIG. In the quenching process, as shown in FIG. 5, the telescopic rod 30 a in the pressing cylinder 30 is extended downward, and the entire pressing frame 31 is moved downward along the support arm 22.

  Next, the telescopic rod 35 a of the holding cylinder 35 provided on the inner side of the pressing frame 31 is contracted, and the inner peripheral fixing member 36 that is held suspended is attached to the inner peripheral side of the ring-shaped workpiece 2. At the same time, the ring-shaped pressing member 33 is pressed onto the ring-shaped workpiece 2, and the entire upper surface of the ring-shaped workpiece 2 is pressed by the pressing member 33.

  As shown in FIG. 6, the inner peripheral fixing member 36 is attached to the inner peripheral side of the ring-shaped workpiece 2 and the entire upper surface of the ring-shaped workpiece 2 is pressed by the pressing member 33 as described above. The chain 25 is fed out by the elevating device 20, and the entire suspension frame 24 is lowered along the guide member 26 a provided on the outer frame frame 26 by the first linear guide 27, thereby supporting the base member 21. The ring-shaped workpiece 2 supported on the strip 21a is immersed in the cooling liquid 4a accommodated in the cooling liquid tank 4.

  In addition, the motor 40 is rotated in a state in which the ring-shaped workpiece 2 supported on the support protrusion 21a of the base member 21 is immersed in the coolant 4a in the coolant tank 4 as described above. As the support arm 22 rotates, the ring-shaped workpiece 2 supported on the base member 21 is rotated in the cooling liquid 4a in a state where the ring-shaped workpiece 2 is pressed by the pressing member 33, and is heat-treated. The workpiece 2 is cooled in the cooling liquid 4a and quenched.

  In this way, even in the case of quenching the ring-shaped workpiece 2 having a very large diameter, as in the conventional case, the ring-shaped workpiece 2 can be set in a constraining die by a manual operation using a crane or the like. It is not necessary to tighten the ring-shaped workpiece by a manual vise at an appropriate position, and the ring-shaped workpiece 2 heated in the heat treatment furnace 1 can be automatically quenched, so that the quenching process can be performed easily. It becomes like this.

  Further, the inner peripheral fixing member 36 is mounted on the inner peripheral side of the ring-shaped workpiece 2 transferred to the base member 21 as described above, and the entire upper surface of the ring-shaped workpiece 2 is pressed by the ring-shaped pressing member 33. Since the quenching process is performed in the above state, the occurrence of warpage or the like in the ring-shaped workpiece 2 is sufficiently suppressed.

  Further, when the ring-shaped workpiece 2 is cooled in the coolant 4a, the ring-shaped workpiece 2 is supported on the support protrusion 21a provided on the upper surface of the base member 21, and the ring-shaped workpiece 2 is supported by the coolant 4a. Since the ring-shaped workpiece 2 is cooled in the coolant 4a, the ring-shaped workpiece 2 can be efficiently cooled.

  Further, in the ring-shaped workpiece quenching apparatus according to this embodiment, the ring-shaped workpiece 2 is directly pressed by the ring-shaped pressing member 33. However, as shown in FIG. Provided on the upper surface of the member 36 is a flange portion 36b that comes into contact with the upper surface of the ring-shaped workpiece 2 and presses the upper surface of the ring-shaped workpiece 2 by the pressing member 33 via the flange portion 36b of the inner peripheral fixing member 36. It is also possible to make it. When the upper surface of the ring-shaped workpiece 2 is pressed by the pressing member 33 through the flange portion 36b of the inner peripheral fixing member 36 as described above, the thickness H1 of the ring-shaped workpiece 2 is lower than the flange portion 36b. It is necessary to make the protruding length H2 of the inner peripheral fixing member 36 protruding to be smaller.

  In this manner, the upper surface of the inner peripheral fixing member 36 is provided with the flange portion 36b to be brought into contact with the upper surface of the ring-shaped workpiece 2, and the pressing member 33 via the flange portion 36b of the inner peripheral fixing member 36 has a ring shape. When the upper surface of the workpiece 2 is pressed, as shown in FIG. 8, the size of the ring-shaped workpiece 2 is changed, and the size of the ring-shaped workpiece 2 and the pressing member 33 in the ring shape is changed. Even when the sizes do not match, without changing the pressing member 33, the inner peripheral fixing member 36 is moved downward from the flange 36b while the size of the flange 36b corresponds to the size of the pressing member 33 described above. The upper surface of the ring-shaped workpiece 2 can be appropriately replaced by the pressing member 33 via the flange 36b provided on the inner peripheral fixing member 36 by simply replacing the protruding portion with one corresponding to the inner diameter of the ring-shaped workpiece 2. Press to It becomes possible to.

In the quenching apparatus for a ring-shaped workpiece according to an embodiment of the present invention, the state in which the ring-shaped workpiece heat-treated in the heat treatment furnace is conveyed to a holding member provided above the cooling liquid tank by the conveying device is shown. It is a schematic explanatory drawing. In the quenching apparatus for a ring-shaped workpiece according to the above-described embodiment, a support protrusion provided on the base member is inserted between the roller members of the holding member that holds the ring-shaped workpiece, so that the ring-shaped workpiece is the base member. It is the partial explanatory view which showed the process made to support by the support protrusion. In the quenching apparatus for a ring-shaped workpiece according to the above-described embodiment, a partial explanatory view showing a state in which the roller member in the holding member is separated on both sides and the ring-shaped workpiece is transferred onto the support protrusion of the base member. is there. In the hardening apparatus of the ring-shaped workpiece which concerns on said embodiment, it is schematic explanatory drawing of the whole apparatus which immerses the ring-shaped workpiece | work transferred to the base member in the cooling fluid accommodated in the cooling fluid tank, and performs a hardening process. . In the quenching apparatus for a ring-shaped workpiece according to the above-described embodiment, the apparatus shown in FIG. 4 allows the inner circumferential fixing member to be mounted on the inner circumferential side of the ring-shaped workpiece transferred to the base member, and the ring-shaped press. It is the schematic explanatory drawing which showed the state which presses the whole upper surface of a ring-shaped workpiece | work with a member. In the quenching apparatus for a ring-shaped workpiece according to the above-described embodiment, the ring-shaped workpiece transferred to the base member is immersed in the coolant stored in the coolant tank by the apparatus shown in FIG. It is the schematic explanatory drawing which showed the state to perform. In the quenching apparatus for a ring-shaped workpiece according to the above-described embodiment, a collar portion that is brought into contact with the upper surface of the ring-shaped workpiece is provided on the upper surface of the inner peripheral fixing member, and the ring shape is formed by the pressing member through the collar portion. It is a schematic explanatory drawing of the example of a change made to press the upper surface of a workpiece | work. In the quenching apparatus for a ring-shaped workpiece according to the modified example shown in FIG. 7, when the size of the ring-shaped workpiece is changed, only the inner peripheral fixing member provided with the flange portion is replaced. It is the fragmentary explanatory view showing the state where the upper surface of the ring-shaped work is pressed by the pressing member via the flange of the fixing member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heat processing furnace 2 Ring-shaped workpiece | work 3 Conveying apparatus 3a Conveying roller 4 Cooling liquid tank 4a Cooling liquid 10 Holding member 11 Roller member 12 Drive apparatus 20 Lifting apparatus 21 Base member 21a Support protrusion 22 Support arm 23 1st bearing member 24 Hanging Frame 24a connecting portion 25 chain 26 outer frame frame 26a guide member 27 first linear guide 30 pressing cylinder 30a telescopic rod 31 pressing frame 32 second bearing member 33 pressing member 34 second linear guide 35 holding cylinder 35a telescopic rod 36 Inner perimeter fixing member 36a Suspension part 36b Hook 40 Motor 40a Rotating shaft 41 Gear 42 Ring gear H1 Thickness of ring-shaped workpiece H2 Projection length of inner perimeter fixing member projecting downward from collar

Claims (5)

  A transport device that transports a ring-shaped workpiece heat-treated in a heat treatment furnace onto a separable holding member provided above a cooling liquid tank in which a cooling liquid is stored, and the holding member is separated and held. The above-mentioned ring-shaped work held on the member is transferred to the base member, the inner peripheral fixing member mounted on the inner peripheral side of the ring-shaped work transferred to the base member, and the base member. A pressing member that presses the upper surface of the ring-shaped workpiece, and the inner peripheral fixing member is mounted on the inner peripheral side of the ring-shaped workpiece, and the ring-shaped workpiece is pressed with the pressing member. An apparatus for quenching a ring-shaped workpiece, comprising elevating means for lowering the base member together with the base member and immersing it in a coolant stored in a coolant tank.   The ring-shaped workpiece hardening apparatus according to claim 1, wherein the pressing member that presses the upper surface of the ring-shaped workpiece transferred to the base member is formed in a ring shape that presses the entire upper surface of the ring-shaped workpiece. A quenching device for ring-shaped workpieces.   The ring-shaped workpiece hardening apparatus according to claim 1 or 2, wherein a plurality of roller members are provided on the holding member so as to be separable on both sides through a required interval, and the upper surface of the base member And a plurality of support protrusions inserted between the roller members to support the ring-shaped workpiece.   The ring-shaped workpiece quenching apparatus according to any one of claims 1 to 3, wherein the ring-shaped workpiece is lowered together with the base member and immersed in a coolant stored in a coolant tank. A ring-shaped workpiece quenching apparatus, comprising: a rotating device that rotates the ring-shaped workpiece in the cooling liquid together with the base member in the above-described state.   The ring-shaped workpiece hardening apparatus according to any one of claims 1 to 4, wherein a flange portion is provided on the upper surface of the inner peripheral fixing member so as to contact the upper surface of the ring-shaped workpiece. The ring-shaped workpiece hardening apparatus, wherein the upper surface of the ring-shaped workpiece is pressed by the pressing member through the flange portion of the inner peripheral fixing member.

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