CN219881221U - Local heating device for spline shaft fork blank - Google Patents
Local heating device for spline shaft fork blank Download PDFInfo
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- CN219881221U CN219881221U CN202321179700.2U CN202321179700U CN219881221U CN 219881221 U CN219881221 U CN 219881221U CN 202321179700 U CN202321179700 U CN 202321179700U CN 219881221 U CN219881221 U CN 219881221U
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 36
- 238000001816 cooling Methods 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 35
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 12
- 238000005242 forging Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 9
- 230000005484 gravity Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000009966 trimming Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
The utility model discloses a local heating device for spline shaft yoke blanks, which comprises a furnace body support, a guide support and a driving support, wherein the furnace body support, the guide support and the driving support are sequentially arranged from left to right, an electric furnace is arranged on the furnace body support, a cylindrical hearth is arranged in the electric furnace, the lower end of the hearth is open, a water-cooling temperature control device is arranged at the upper part of the hearth in the electric furnace, a V-shaped groove slideway is arranged on the guide support, a cylinder is arranged on the driving support, the central lines of the hearth, the V-shaped groove slideway and the cylinder are overlapped, the central lines are arranged in a left-right low inclined manner, and the upper end of a piston rod of the cylinder is coaxially provided with a length-adjustable ejector rod assembly. The utility model adopts a local heating mode for the blanks, only heats the blanks which participate in the fork part and the neck part and are formed into the fork part, and the rod part does not need to be heated, so that the energy consumption is small, the heating is fast, the production cost is reduced and the production efficiency is improved.
Description
Technical Field
The utility model belongs to the technical field of automobile production, and particularly relates to a local heating device for spline shaft fork blanks.
Background
The conventional spline shaft fork forging adopts a hammer forging die forging process, and the common procedures comprise blanking, medium-frequency induction heating, drawing, pre-forging, final forging and trimming, wherein the medium-frequency induction heating procedure is usually to integrally heat a cylindrical blank, and the heating mode is high in energy consumption, long in heating time and low in production efficiency.
Disclosure of Invention
The utility model aims to solve the technical problems and provides a local heating device for spline shaft yoke blanks, which can reduce energy consumption, shorten heating time and improve production efficiency.
In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a local heating device of spline shaft fork blank, including furnace body support, guide bracket and the drive bracket that set gradually from left to right, be equipped with the electric stove on the furnace body support, the inside cylindric furnace that is equipped with of electric stove, the furnace lower extreme is uncovered, and the inside water-cooling temperature regulating device that is equipped with in furnace upper portion of electric stove is equipped with V type groove slide on the guide bracket, is equipped with the cylinder on the drive bracket, and the central line coincidence of furnace, V type groove slide and cylinder and this central line high-low slope setting about, the piston rod upper end coaxial to of cylinder is equipped with the ejector pin subassembly with adjustable length.
The water-cooling temperature control device comprises a hollow heat conducting disc, a water inlet pipe, a water return pipe, a plugging guide block and two springs, wherein the plugging guide block is fixedly arranged inside an upper port of a furnace, two guide holes symmetrical about the central line of the furnace are formed in the plugging guide block, the central line of each guide hole is parallel to the central line of the furnace, the water inlet pipe and the water return pipe respectively penetrate through one guide hole from left to right to extend into the furnace, the right ends of the water inlet pipe and the water return pipe are fixedly connected with the left side surface of the hollow heat conducting disc, the two springs are respectively sleeved on the water inlet pipe and the water return pipe, and two ends of each spring are respectively contacted with the hollow heat conducting disc and the plugging guide block.
The length-adjustable ejector rod assembly comprises a sleeve, an ejector rod, a push plate, a guide wheel, an upper nut and a lower nut, wherein the upper end of a piston rod of the air cylinder stretches into and is in threaded connection with the lower end face of the sleeve, the lower nut is in threaded connection with the lower end face of the sleeve, the ejector rod downwards stretches into and is in threaded connection with the sleeve through the upper end face of the sleeve, the upper nut is in threaded connection with the ejector rod and is in pressure connection with the upper end face of the sleeve, the upper end of the ejector rod is fixedly connected with the lower surface of the push plate, the guide wheel is fixedly connected to the left side of the upper end of the sleeve through a wheel carrier, and the left side of the guide wheel is in rotary connection with a groove at the bottom of the V-shaped groove slideway.
By adopting the technical scheme, the specific process of locally heating the blank is as follows: the cylindrical blank is vertically placed on a push plate in a V-shaped groove slideway, a cylinder is started, a piston rod of the cylinder extends, the blank is pushed upwards into a hearth of an electric furnace along the V-shaped groove slideway by a sleeve, a push rod and the push plate, a guide wheel on the left side of the upper end of the sleeve rolls upwards along a groove at the bottom of the V-shaped groove slideway until a hollow heat conducting disc is pressed at the upper end of the blank, the hollow heat conducting disc moves upwards, two springs are compressed, the cylinder stops extending, and the electric furnace heats the part of the blank entering the hearth; because the part of the upper end part of the blank in the hearth is the place with the highest temperature of the blank, the upper part and the lower part of the blank have temperature difference; in the local heating process, the water-cooling temperature control device ensures the uniformity of the heating temperature of the single blank, the water inlet pipe is used for introducing cold water into the hollow heat conducting disc, the cold water exchanges heat with the upper end face of the blank through the hollow heat conducting disc, and the hot water is discharged through the water return pipe, so that the temperature of the upper part of the blank is reduced, the temperature of the upper part and the lower part of the blank are kept basically consistent, and the blank is prevented from being scrapped due to local overburning of the end face of the blank; the cylinder is controlled by a PLC, the blank is jacked into the hearth according to the set time, after the blank is heated to the set time, the piston rod of the cylinder contracts, the blank slides out of the hearth along the V-shaped groove slideway under the action of gravity, and the heating is stopped; in addition, the heating length of the blanks entering the hearth is adjusted by adjusting the length of the push rod extending into the sleeve, so that the consistency of the heating length of each blank is ensured.
The novel process adopts a local heating mode, only blanks which participate in forming the fork parts at the fork parts and the neck part are heated, the rod part does not need to be heated, and meanwhile, the fork part flash is thinned because the rod part does not have flash, the trimming deformation is reduced, so that the size of the rod part is reduced from phi 68mm to phi 66mm in the traditional process, and the machining allowance is reduced.
The length of the blank local heating can be adjusted by adjusting the length of the length-adjustable ejector rod assembly, and the specific adjusting mode is as follows: unscrewing the upper nut, and rotating the length of the ejector rod in threaded connection with the sleeve; or by unscrewing the nut the length of the threaded connection of the piston rod in the sleeve is adjusted. The V-shaped groove slide way 8 is adopted, so that cylindrical blanks can be conveniently taken and placed, and meanwhile, the cylindrical blanks can be pushed to move only along the axis in the axial direction, and the stability of local heating is ensured. The guide wheel is arranged to play a supporting role on the length-adjustable ejector rod assembly, so that radial ejection force is avoided between the piston rod cantilever and the cylinder body of the cylinder 9.
The end face of the billet in the hearth 7 is the place where the billet temperature is highest, and there is a temperature difference from the lower part in the local heating. The temperature of the end face of the blank can be reduced by using the temperature control cooling disc according to the requirement, so that the material temperature is uniform, and the partial overburning of the end face of the blank is avoided, so that the blank is scrapped. The control method of the temperature of the blank is that the heated blank is sorted by an infrared thermometer at the local heating temperature of 1100-1200 ℃, and the sorting is as follows: normal blanks (1100-1200 ℃), low-temperature materials (< 1100 ℃), high-temperature materials (> 1200 ℃), and the sorted blanks reach designated positions through different slide ways. The slideway terminals of the low-temperature material and the high-temperature material are provided with the low-temperature charging basket and the high-temperature charging basket, and the charging basket is provided with a charging hole and is locked, so that unqualified blanks are prevented from being taken by workers while the mixing of materials is avoided. The low-temperature material can be reused once, and the scrapping treatment is carried out by undertemperature again, so that the problem that the forge piece structure does not meet the requirements due to multiple heating is avoided; and (5) scrapping the high-temperature material, and cleaning the high-temperature material by quality personnel regularly and marking and isolating.
The low temperature material is easy to cause: (1) the speed of filling the blank into the cavity is reduced, and the phenomenon of unfilled forging is easy to occur, so that the forging is scrapped; (2) the striking force of the equipment is increased, the stress of the die is increased, and the equipment and the die are damaged; (3) the phenomenon of motionless forging occurs in the equipment, and the geometric dimension of the forging is out of tolerance. The high temperature material is easy to cause: the blank structure has coarse grains, and the strength and mechanical property of the forging are reduced, so that the forging is scrapped.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Description of the embodiments
As shown in fig. 1, the spline shaft yoke blank local heating device comprises a furnace body support 3, a guide support 4 and a driving support 5 which are sequentially arranged from left to right, wherein an electric furnace 6 is arranged on the furnace body support 3, a cylindrical hearth 7 is arranged in the electric furnace 6, the lower end of the hearth 7 is open, a water cooling temperature control device is arranged at the upper part of the hearth 7 in the electric furnace 6, a V-shaped groove slideway 8 is arranged on the guide support 4, a cylinder 9 is arranged on the driving support 5, the central lines of the hearth 7, the V-shaped groove slideway 8 and the cylinder 9 are overlapped, the central lines are obliquely arranged at left, right and left sides, and the upper end of a piston rod of the cylinder 9 is coaxially provided with a length-adjustable ejector rod assembly.
The water-cooling temperature control device comprises a hollow heat conducting disc 10, a water inlet pipe 11, a water return pipe 12, a plugging guide block 13 and two springs 15, wherein the plugging guide block 13 is fixedly arranged inside an upper port of the hearth 7, two guide holes symmetrical to the center line of the hearth 7 are formed in the plugging guide block 13, the center line of each guide hole is parallel to the center line of the hearth 7, the water inlet pipe 11 and the water return pipe 12 respectively penetrate through one guide hole from left to right and extend into the hearth 7, the right ends of the water inlet pipe 11 and the water return pipe 12 are fixedly connected with the left side surface of the hollow heat conducting disc 10, the two springs 15 are respectively sleeved on the water inlet pipe 11 and the water return pipe 12, and two ends of each spring 15 are respectively in contact with the hollow heat conducting disc 10 and the plugging guide block 13.
The length-adjustable ejector rod assembly comprises a sleeve 16, an ejector rod 17, a push plate 18, a guide wheel 19, an upper nut 20 and a lower nut 21, wherein the upper end of a piston rod 22 of a cylinder 9 extends into and is in threaded connection with the lower port of the sleeve 16, the lower nut 21 is in threaded connection with the piston rod 22 and is in pressure connection with the lower end face of the sleeve 16, the ejector rod 17 extends downwards from the upper port of the sleeve 16 and is in threaded connection with the sleeve 16, the upper nut 20 is in threaded connection with the ejector rod 17 and is in pressure connection with the upper end face of the sleeve 16, the upper end of the ejector rod 17 is fixedly connected with the lower surface of the push plate 18, the guide wheel 19 is fixedly connected to the left side of the upper end of the sleeve 16 through a wheel frame, and the left side of the guide wheel 19 is in rotary connection with the groove at the bottom of the V-shaped groove slideway 8.
The specific process of the utility model is as follows: placing a blank 23 vertically on a push plate 18 in a V-shaped groove slide way 8, starting an air cylinder 9, extending a piston rod 22 of the air cylinder 9, pushing the blank 23 upwards into a hearth 7 of an electric furnace 6 along the V-shaped groove slide way 8 through a sleeve 16, a push rod 17 and the push plate 18, rolling a guide wheel 19 on the left side of the upper end of the sleeve 16 upwards along a groove at the bottom of the V-shaped groove slide way 8 until the upper end of the blank 23 pushes against a hollow heat conducting disc 10, moving the hollow heat conducting disc 10 upwards, compressing two springs 15, stopping extending the air cylinder 9, and heating the part of the blank 23 entering the hearth 7 by the electric furnace 6; the part of the upper end part of the blank 23 in the hearth 7 is the place where the temperature of the blank 23 is highest, and the upper part and the lower part of the blank 23 have temperature difference; in the process of local heating, the water-cooling temperature control device ensures the uniformity of the heating temperature of the single blank 23, the water inlet pipe 11 is used for introducing cold water into the hollow heat conducting disc 10, the cold water exchanges heat with the upper end face of the blank 23 through the hollow heat conducting disc 10, and the hot water is discharged through the water return pipe 12, so that the temperature of the upper part of the blank 23 is reduced, the temperature of the upper part and the lower part of the blank 23 are kept basically consistent, and the blank 23 is prevented from being scrapped due to local overburning of the end face of the blank 23; the cylinder 9 is controlled by a PLC, the blank 23 is jacked into the hearth 7 according to set time, after the blank is heated to the set time, a piston rod 22 of the cylinder 9 is contracted, the blank 23 slides out of the hearth 7 along the V-shaped groove slideway 8 under the action of gravity, and the heating is stopped; in addition, the heating length of the blanks 23 entering the hearth 7 is adjusted by adjusting the length of the push rod 17 extending into the sleeve 16, so that the consistency of the heating length of each blank 23 is ensured.
The length of the blank 23 which is locally heated can be adjusted by adjusting the length of the length-adjustable ejector rod assembly in the following specific adjustment modes: unscrewing the upper nut 20 and then rotating the length of the threaded connection of the ejector pin within the sleeve 16; or by unscrewing the nut 21 the length of the threaded connection of the piston rod 22 within the sleeve 16 is adjusted. The V-shaped groove slide way 8 is adopted, so that the cylindrical blank 23 can be conveniently taken and placed, and meanwhile, the cylindrical blank 23 can be axially pushed to move only along the axis, and the stability of local heating is ensured. The guide wheel 19 is arranged to support the length-adjustable ejector rod assembly, so that radial ejection force is avoided between the piston rod 22 and the cylinder body of the cylinder 9 when the piston rod 22 is cantilevered, and the cylinder 9 is effectively protected.
The present embodiment is not limited in any way by the shape, material, structure, etc. of the present utility model, and any simple modification, equivalent variation and modification made to the above embodiments according to the technical substance of the present utility model are all included in the scope of protection of the technical solution of the present utility model.
Claims (3)
1. Local heating device of spline shaft fork blank, its characterized in that: including furnace body support, guide bracket and the drive bracket that set gradually from left to right, be equipped with the electric stove on the furnace body support, the inside cylindric furnace that is equipped with of electric stove, furnace lower extreme is uncovered, and the inside water-cooling temperature regulating device that is equipped with in furnace upper portion is equipped with on the guide bracket, is equipped with V type groove slide, is equipped with the cylinder on the drive bracket, and the central line coincidence of furnace, V type groove slide and cylinder and this central line left and right sides low slope setting, the piston rod upper end coaxial orientation of cylinder is equipped with the ejector pin subassembly with adjustable length.
2. The spline shaft yoke blank local heating apparatus of claim 1, wherein: the water-cooling temperature control device comprises a hollow heat conducting disc, a water inlet pipe, a water return pipe, a plugging guide block and two springs, wherein the plugging guide block is fixedly arranged inside an upper port of a furnace, two guide holes symmetrical about the central line of the furnace are formed in the plugging guide block, the central line of each guide hole is parallel to the central line of the furnace, the water inlet pipe and the water return pipe respectively penetrate through one guide hole from left to right to extend into the furnace, the right ends of the water inlet pipe and the water return pipe are fixedly connected with the left side surface of the hollow heat conducting disc, the two springs are respectively sleeved on the water inlet pipe and the water return pipe, and two ends of each spring are respectively contacted with the hollow heat conducting disc and the plugging guide block.
3. The spline shaft yoke blank local heating apparatus of claim 1 or 2, wherein: the length-adjustable ejector rod assembly comprises a sleeve, an ejector rod, a push plate, a guide wheel, an upper nut and a lower nut, wherein the upper end of a piston rod of the air cylinder stretches into and is in threaded connection with the lower end face of the sleeve, the lower nut is in threaded connection with the lower end face of the sleeve, the ejector rod downwards stretches into and is in threaded connection with the sleeve through the upper end face of the sleeve, the upper nut is in threaded connection with the ejector rod and is in pressure connection with the upper end face of the sleeve, the upper end of the ejector rod is fixedly connected with the lower surface of the push plate, the guide wheel is fixedly connected to the left side of the upper end of the sleeve through a wheel carrier, and the left side of the guide wheel is in rotary connection with a groove at the bottom of the V-shaped groove slideway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321179700.2U CN219881221U (en) | 2023-05-16 | 2023-05-16 | Local heating device for spline shaft fork blank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321179700.2U CN219881221U (en) | 2023-05-16 | 2023-05-16 | Local heating device for spline shaft fork blank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219881221U true CN219881221U (en) | 2023-10-24 |
Family
ID=88407781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321179700.2U Active CN219881221U (en) | 2023-05-16 | 2023-05-16 | Local heating device for spline shaft fork blank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219881221U (en) |
-
2023
- 2023-05-16 CN CN202321179700.2U patent/CN219881221U/en active Active
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