CN219665612U - Hollow roller's spindle nose hot jacket frock - Google Patents
Hollow roller's spindle nose hot jacket frock Download PDFInfo
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- CN219665612U CN219665612U CN202320001685.6U CN202320001685U CN219665612U CN 219665612 U CN219665612 U CN 219665612U CN 202320001685 U CN202320001685 U CN 202320001685U CN 219665612 U CN219665612 U CN 219665612U
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- Prior art keywords
- conductive
- hollow
- cylindrical spiral
- insulating
- spiral electric
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- 238000005485 electric heating Methods 0.000 claims abstract description 36
- 239000000498 cooling water Substances 0.000 claims abstract description 30
- 238000001816 cooling Methods 0.000 claims abstract description 22
- 238000005452 bending Methods 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 17
- 229910052802 copper Inorganic materials 0.000 claims description 17
- 239000010949 copper Substances 0.000 claims description 17
- 239000000919 ceramic Substances 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 1
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- General Induction Heating (AREA)
Abstract
The utility model relates to the technical field of roller manufacturing process equipment, in particular to a shaft head hot jacket tool of a hollow roller, which comprises a cylindrical spiral electric heating body, a pair of conductive connecting blocks, a pair of water-cooling cables and an intermediate-frequency diathermanous power supply, wherein the cylindrical spiral electric heating body is formed by bending a hollow conductive pipe body according to a certain pitch; the opening parts of the hollow conductive pipe bodies at the two ends of the cylindrical spiral electric heating body are respectively and correspondingly connected with an end part cooling water inlet pipe and an end part cooling water outlet pipe which are communicated with the inside of the hollow conductive pipe body. The utility model improves the assembly reliability of the hollow roller shaft head under the condition of large interference fit.
Description
Technical Field
The utility model relates to the technical field of roller manufacturing process equipment, in particular to a shaft head hot sleeve tool for a hollow roller.
Background
A large hollow roll is shown in figure 2. The two ends of the hollow roller are provided with shaft heads, and outer rabbets of the shaft heads are connected with inner holes at the two ends of the hollow roller through interference fit and are axially fixed through bolts. According to the use requirement of the roller, the interference between the outer spigot of the shaft head and the inner hole of the hollow roller is 0.30mm, and the interference is larger.
In order to realize interference assembly of the hollow roller and the shaft head, a conventional assembly method adopts a flame heating method, and specifically, the hollow roller is subjected to local flame heating, and after the inner hole of the hollow roller is heated and expanded, the shaft head is provided with the hollow roller. However, for large-sized rollers, the flame heating method has the defects of insufficient heating heat and poor heating uniformity, so that the clamping phenomenon is easy to occur during assembly, and the uneven flame heating also causes larger stress in the roller, so that the final processing precision of the roller is easy to be influenced due to stress deformation in the subsequent manufacturing process of the roller.
Disclosure of Invention
In order to solve the problems, the utility model provides a hollow roller shaft head hot sleeve tool, which aims to improve the assembly reliability under the condition of large interference fit of a hollow roller shaft head. The specific technical scheme is as follows:
a shaft head hot sleeve tool for a hollow roller comprises a cylindrical spiral electric heating body, a pair of conductive connecting blocks, a pair of water-cooling cables and an intermediate-frequency diathermanous power supply, wherein the cylindrical spiral electric heating body is formed by bending a hollow conductive pipe body according to a certain pitch, the pair of conductive connecting blocks are respectively connected to the hollow conductive pipe bodies at two ends of the cylindrical spiral electric heating body, the pair of water-cooling cables are correspondingly connected with the pair of conductive connecting blocks, and the intermediate-frequency diathermanous power supply is connected with the pair of water-cooling cables; the opening parts of the hollow conductive pipe bodies at the two ends of the cylindrical spiral electric heating body are respectively and correspondingly connected with an end part cooling water inlet pipe and an end part cooling water outlet pipe which are communicated with the inside of the hollow conductive pipe body.
Preferably, an insulating heat-resistant lifting rod is fixedly arranged on the outer circle of the cylindrical spiral electric heating body, and the length direction of the rod body of the insulating heat-resistant lifting rod is consistent with the central axis direction of the cylindrical spiral electric heating body.
Preferably, a connecting screw is welded on the hollow conductive pipe body of the cylindrical spiral electric heating body, a screw connecting hole is formed in the insulating heat-resistant lifting rod, the insulating heat-resistant lifting rod is installed on the connecting screw through the screw connecting hole and fixed through a nut, and ceramic insulating heat-insulating gaskets are respectively arranged between the insulating heat-resistant lifting rod and the connecting screw and between the insulating heat-resistant lifting rod and the nut.
As a further improvement of the utility model, a pair of V-shaped insulating and heat-insulating supports for positioning when the excircle of the hollow shaft roller is heated are correspondingly arranged on the rod body of the insulating and heat-resisting lifting rod and lean against the two end parts of the cylindrical spiral electrothermal body.
In the utility model, the V-shaped insulating and heat-insulating support body is a V-shaped ceramic insulating and heat-insulating support body.
Preferably, a through hole is formed in the middle of the V-shaped ceramic insulating and heat-insulating support body, and the V-shaped ceramic insulating and heat-insulating support body is fixed to the lower end face of the insulating heat-resistant lifting rod through a screw.
Preferably, the hollow conductive pipe body is a rectangular copper pipe, and the conductive connecting block is a conductive copper block.
In the utility model, one end of the water-cooling cable connected with the conductive copper block is provided with a conductive joint, the conductive joint and the conductive copper block are respectively provided with a bolt connecting hole, and the conductive joint of the water-cooling cable and the conductive copper block on the outer circle of the cylindrical spiral electric heater are fixedly connected through bolts and nuts arranged on the bolt connecting holes.
Preferably, the conductive joints of the pair of water-cooled cables are respectively provided with a bypass water-cooled interface communicated with the water-cooled channel inside the water-cooled cables, and the end-cooled water inlet pipe and the end-cooled water outlet pipe are respectively correspondingly connected to the bypass water-cooled interfaces on the conductive joints of the pair of water-cooled cables.
In order to further improve the cooling effect of the hollow conductive pipe body when the cylindrical spiral electric heating body is heated, the hollow roller shaft head hot jacket tool is characterized in that an intermediate water inlet port and an intermediate water outlet port are further arranged on the hollow conductive pipe body at intervals, wherein the intermediate water inlet port is connected with an intermediate cooling water inlet pipe, and an intermediate cooling water outlet pipe is arranged on the intermediate water outlet port.
Preferably, the end cooling water inlet pipe, the intermediate cooling water outlet pipe and the end cooling water outlet pipe are uniformly arranged at intervals as much as possible.
According to the utility model, the insulating heat-resistant lifting rod is provided with the lifting threaded hole, and a lifting ring screw can be arranged in the lifting threaded hole so as to facilitate lifting.
The application method of the utility model is as follows:
(1) Preparation: the hollow roller is horizontally arranged, and the excircle of one end of the hollow roller to be sleeved is in a overhanging state;
(2) Hoisting a tool: lifting the cylindrical spiral electric heater upwards through an insulating heat-resistant lifting rod by using travelling crane or other lifting equipment, sleeving the cylindrical spiral electric heater on the outer circle of the end part of the hollow roller, and putting down the cylindrical spiral electric heater, so that the V-shaped insulating heat-insulating support body is supported on the outer circle of the end part of the hollow roller, and forming a self-centering state of the cylindrical spiral electric heater on the outer circle of the hollow roller;
(3) Heating the excircle of the hollow roller: starting an intermediate frequency diathermy power supply, electrifying the cylindrical spiral electric heating body, and carrying out intermediate frequency heating on the excircle of the hollow roller;
(4) Shaft head hot sleeve: measuring the size of the inner hole of the hollow roller in the heating process, and stopping heating when the size of the inner hole is enlarged to have a sufficient assembly gap with the shaft head due to heating; and (3) the shaft head is hot sleeved into an inner hole at the end part of the hollow roller, and the outer circle of the shaft head and the inner hole at the end part of the hollow roller form interference fit after cooling.
The beneficial effects of the utility model are as follows:
firstly, the cylindrical spiral electric heating body bent by the hollow conductive pipe body is connected with the medium-frequency diathermanous power supply, so that the outer circle of the hollow roller can be uniformly heated with high power, and the defects that the large excessive sleeving cannot be realized due to insufficient heating heat and poor heating uniformity caused by conventional flame heating are overcome.
Secondly, the spindle head hot sleeve tool for the hollow roller forms multi-path water cooling circulation by utilizing the water cooling cable and the plurality of pairs of cooling water pipes, so that the cooling uniformity and the cooling effect of the cylindrical spiral electric heating body are improved, and the working reliability of the cylindrical spiral electric heating body is improved.
Thirdly, the hollow roller shaft head hot sleeve tool disclosed by the utility model has good heating uniformity, is beneficial to reducing uneven stress in the roller and improves the final machining precision of the roller.
Drawings
FIG. 1 is a schematic structural view of a hollow roll head hot jacket tooling;
fig. 2 is a schematic structural view of the hollow roll.
In the figure: 1. hollow conductive pipe body (rectangular copper pipe), 2, cylindrical spiral electrothermal body, 3, conductive connection block (conductive copper block), 4, water-cooled cable, 5, intermediate frequency diathermanous power supply, 6, end cooling water inlet pipe, 7, end cooling water outlet pipe, 8, insulating heat-resistant lifting rod, 9, connecting screw, 10, nut, 11, ceramic insulating heat-insulating gasket, 12, V-shaped insulating heat-insulating support body, 13, conductive joint, 14, bolt, 15, bypass water-cooled interface, 16, intermediate water inlet interface, 17, intermediate water outlet interface, 18, intermediate cooling water inlet pipe, 19, intermediate cooling water outlet pipe, 20, hollow roller, 21, spindle nose.
Arrows in the figure indicate the direction of water flow.
Detailed Description
The following describes the embodiments of the present utility model further with reference to the drawings and examples. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.
Fig. 1 to 2 show an embodiment of a mandrel head hot jacket tooling for a hollow roller, which comprises a cylindrical spiral electric heating body 2 formed by bending a hollow conductive pipe body 1 according to a certain pitch, a pair of conductive connecting blocks 3 respectively connected to the hollow conductive pipe bodies 1 at two ends of the cylindrical spiral electric heating body 2, a pair of water-cooling cables 4 correspondingly connected with the conductive connecting blocks 3, and an intermediate-frequency diathermic power supply 5 connected with the water-cooling cables 4; the openings of the hollow conductive pipe bodies 1 at the two ends of the cylindrical spiral electric heating body 2 are respectively and correspondingly connected with an end cooling water inlet pipe 6 and an end cooling water outlet pipe 7 which are communicated with the inside of the hollow conductive pipe body 1.
Preferably, an insulating heat-resistant lifting rod 8 is fixedly arranged on the outer circle of the cylindrical spiral electric heating body 2, and the length direction of the rod body of the insulating heat-resistant lifting rod 8 is consistent with the central axis direction of the cylindrical spiral electric heating body 2.
Preferably, a connecting screw 9 is welded on the hollow conductive tube body 1 of the cylindrical spiral electric heating body 2, a screw connecting hole is formed in the insulating heat-resistant lifting rod 8, the insulating heat-resistant lifting rod 8 is installed on the connecting screw 9 through the screw connecting hole and fixed through a nut 10, and ceramic insulating heat-insulating gaskets 11 are respectively arranged between the insulating heat-resistant lifting rod 8 and the connecting screw 9 and between the insulating heat-resistant lifting rod and the nut 10.
As a further improvement of the present embodiment, a pair of V-shaped insulating and heat-insulating supports 12 for positioning when heating the outer circumference of the hollow shaft 20 roller are correspondingly installed on the rod body of the insulating and heat-resistant lifting rod 8 at the two end portions of the cylindrical spiral electric heater 2.
In this embodiment, the V-shaped insulating support 12 is a V-shaped ceramic insulating support.
Preferably, a through hole is formed in the middle of the V-shaped ceramic insulating and heat-insulating support 12, and the V-shaped ceramic insulating and heat-insulating support is fixed to the lower end face of the insulating heat-resistant lifting rod 8 through a screw.
Preferably, the hollow conductive tube body 1 is a rectangular copper tube, and the conductive connection block 3 is a conductive copper block.
In this embodiment, a conductive joint 13 is disposed at one end of the water-cooled cable 4 connected to the conductive copper block 3, bolt connection holes are respectively disposed on the conductive joint 13 and the conductive copper block 3, and the conductive joint 13 of the water-cooled cable 4 is fixedly connected to the conductive copper block 3 on the outer circle of the cylindrical spiral electric heating body 2 through bolts 13 and nuts 10 mounted on the bolt connection holes.
Preferably, the conductive joints 13 of the pair of water-cooled cables 4 are respectively provided with a bypass water-cooling interface 15 communicated with the water-cooling channel inside the water-cooled cables 4, and the end-cooling water inlet pipe 6 and the end-cooling water outlet pipe 7 are respectively correspondingly connected to the bypass water-cooling interfaces 15 on the conductive joints 13 of the pair of water-cooled cables 4.
In order to further improve the cooling effect of the hollow conductive tube body 1 when the cylindrical spiral electric heating body 2 is heated, the hollow roller shaft head hot jacket tool of the embodiment is further provided with an intermediate water inlet interface 16 and an intermediate water outlet interface 17 at intervals on the hollow conductive tube body 1 positioned at the middle part of the outer circle of the cylindrical spiral electric heating body 2, the intermediate water inlet interface 16 is connected with an intermediate cooling water inlet pipe 18, and the intermediate water outlet interface 17 is provided with an intermediate cooling water outlet pipe 19.
Preferably, the end cooling water inlet pipe 6, the intermediate cooling water inlet pipe 18, the intermediate cooling water outlet pipe 19 and the end cooling water outlet pipe 7 are arranged at uniform intervals as much as possible.
In this embodiment, the insulating heat-resistant lifting rod 8 is provided with a lifting threaded hole, in which a lifting screw (not shown) may be mounted, so as to facilitate lifting.
The application method of the embodiment is as follows:
(1) Preparation: the hollow roller 20 is horizontally arranged, and the excircle of one end of the hollow roller 20 to be sleeved is in a overhanging state;
(2) Hoisting a tool: lifting the cylindrical spiral electric heating body 3 upwards through an insulating heat-resistant lifting rod 8 by using travelling crane or other lifting equipment, enabling the cylindrical spiral electric heating body 3 to be sleeved on the outer circle of the end part of the hollow roller 20, putting down the cylindrical spiral electric heating body 2, and enabling the V-shaped insulating heat-insulating support body 12 to be supported on the outer circle of the end part of the hollow roller 20 to form a self-centering state of the cylindrical spiral electric heating body 3 on the outer circle of the hollow roller 30;
(3) Heating the excircle of the hollow roller: starting an intermediate frequency diathermanous power supply 5, electrifying the cylindrical spiral electrothermal body 2, and carrying out intermediate frequency heating on the outer circle of the hollow roller 20;
(4) Shaft head hot sleeve: measuring the size of the inner hole of the hollow roller 20 in the heating process, and stopping heating when the size of the inner hole is enlarged to have a sufficient assembly gap with the spindle head due to heating; and (3) hot-sleeving the shaft head 21 into an inner hole at the end part of the hollow roller 20, and forming interference fit between the outer circle of the shaft head and the inner hole at the end part of the hollow roller after cooling.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.
Claims (10)
1. The shaft head hot sleeve tool for the hollow roller is characterized by comprising a cylindrical spiral electric heating body, a pair of conductive connecting blocks, a pair of water-cooling cables and an intermediate-frequency diathermanous power supply, wherein the cylindrical spiral electric heating body is formed by bending a hollow conductive pipe body according to a set screw pitch, the pair of conductive connecting blocks are respectively connected to the hollow conductive pipe bodies at two ends of the cylindrical spiral electric heating body, the pair of water-cooling cables are correspondingly connected with the pair of conductive connecting blocks, and the intermediate-frequency diathermanous power supply is connected with the pair of water-cooling cables; the opening parts of the hollow conductive pipe bodies at the two ends of the cylindrical spiral electric heating body are respectively and correspondingly connected with an end part cooling water inlet pipe and an end part cooling water outlet pipe which are communicated with the inside of the hollow conductive pipe body.
2. The hollow roller shaft head hot sleeve tool according to claim 1, wherein an insulating heat-resistant lifting rod is fixedly arranged on the outer circle of the cylindrical spiral electric heating body, and the length direction of a rod body of the insulating heat-resistant lifting rod is consistent with the central axis direction of the cylindrical spiral electric heating body.
3. The hollow roll shaft head hot sleeve tool according to claim 2, wherein a connecting screw is welded on a hollow conductive pipe body of the cylindrical spiral electric heating body, a screw connecting hole is formed in the insulating heat-resistant lifting rod, the insulating heat-resistant lifting rod is installed on the connecting screw through the screw connecting hole and fixed through a nut, and ceramic insulating heat-insulating gaskets are respectively arranged between the insulating heat-resistant lifting rod and the connecting screw and between the insulating heat-resistant lifting rod and the nut.
4. The tool for hot sleeve of spindle nose of hollow roller according to claim 2, wherein a pair of V-shaped insulating and heat-insulating supports for positioning when heating the outer circle of hollow roller are correspondingly installed on the rod body of the insulating and heat-resisting lifting rod close to two ends of the cylindrical spiral electric heating body.
5. The hollow roll shaft head hot sleeve tool according to claim 4, wherein the V-shaped insulating and heat-insulating support body is a V-shaped ceramic insulating and heat-insulating support body.
6. The hollow roll mandrel head hot jacket tooling of claim 1, wherein the hollow conductive tube body is a rectangular copper tube and the conductive connection block is a conductive copper block.
7. The hollow roller shaft head hot sleeve tool according to claim 6, wherein a conductive joint is arranged at one end of the water-cooled cable connected with the conductive copper block, bolt connecting holes are respectively formed in the conductive joint and the conductive copper block, and the conductive joint of the water-cooled cable and the conductive copper block on the outer circle of the cylindrical spiral electric heater body are fixedly connected through bolts and nuts arranged on the bolt connecting holes.
8. The hollow roll shaft head hot sleeve tool according to claim 7, wherein the conductive joints of the pair of water-cooled cables are respectively provided with a bypass water-cooled interface communicated with the water-cooled channel inside the water-cooled cables, and the end-cooled water inlet pipe and the end-cooled water outlet pipe are respectively correspondingly connected to the bypass water-cooled interfaces on the conductive joints of the pair of water-cooled cables.
9. The hollow roller shaft head hot sleeve tool according to claim 1, wherein an intermediate water inlet port and an intermediate water outlet port are further arranged on the hollow conductive pipe body at the middle part of the outer circle of the cylindrical spiral electric heater at intervals, the intermediate water inlet port is connected with an intermediate cooling water inlet pipe, and the intermediate water outlet port is provided with an intermediate cooling water outlet pipe.
10. The hollow roll head hot jacket tooling according to claim 9, wherein the end cooling water inlet pipe, the intermediate water outlet port and the end cooling water outlet pipe are uniformly arranged at intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320001685.6U CN219665612U (en) | 2023-01-03 | 2023-01-03 | Hollow roller's spindle nose hot jacket frock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320001685.6U CN219665612U (en) | 2023-01-03 | 2023-01-03 | Hollow roller's spindle nose hot jacket frock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219665612U true CN219665612U (en) | 2023-09-12 |
Family
ID=87919964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320001685.6U Active CN219665612U (en) | 2023-01-03 | 2023-01-03 | Hollow roller's spindle nose hot jacket frock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219665612U (en) |
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2023
- 2023-01-03 CN CN202320001685.6U patent/CN219665612U/en active Active
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