CN109433842A - The hot extrusion molding method and extrusion die of camshaft - Google Patents
The hot extrusion molding method and extrusion die of camshaft Download PDFInfo
- Publication number
- CN109433842A CN109433842A CN201811262421.6A CN201811262421A CN109433842A CN 109433842 A CN109433842 A CN 109433842A CN 201811262421 A CN201811262421 A CN 201811262421A CN 109433842 A CN109433842 A CN 109433842A
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- Prior art keywords
- raw material
- die
- camshaft
- heated
- extrusion die
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000001125 extrusion Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000000465 moulding Methods 0.000 title claims abstract description 15
- 238000001192 hot extrusion Methods 0.000 title claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 52
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract description 3
- 210000001161 mammalian embryo Anatomy 0.000 claims abstract 4
- 239000000463 material Substances 0.000 claims abstract 4
- 230000007246 mechanism Effects 0.000 claims description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000003595 mist Substances 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 10
- 238000003466 welding Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 238000005242 forging Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/06—Making machine elements axles or shafts
- B21K1/12—Making machine elements axles or shafts of specially-shaped cross-section
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Of Metal (AREA)
Abstract
The invention discloses a kind of hot extrusion molding method of camshaft and extrusion die, which includes process A: a columned raw material is chosen, by the heating one end of the raw material；Process B: the raw material after being heated is entered in type chamber；Process C: precompressed is carried out to one end that raw material is heated；Step D: jumping-up is carried out to one end that raw material is heated using pressure head；Process E: being heated portion of pressure to after jumping-up using the pressure head of extrusion die, is heated portion of raw material the type of extrusion die is intracavitary and is shaped to workpiece embryo material；Process F: extrusion die is opened, and workpiece embryo material is demoulded from extrusion die, camshaft is made, while cooling down to extrusion die.Method of the invention simplifies production process, reduces equipment requirement, to reduce the manufacturing cost of camshaft.
Description
Technical field
The present invention relates to the processing methods of heavy vehicle components, and in particular to a kind of hot extrusion molding side of camshaft
Method also relates to a kind of extrusion die of camshaft.
Background technique
Camshaft is the important component of drum brakes system, and there are two types of current processing methods, and one is pass through forging
Mode processes serpentine head, recycles friction welding (FW), after serpentine head and axle portion are welded together, is being machined out,
In this processing method, the cost is relatively high for friction welding (FW), and stability of the welding quality is poor, often will appear because welding matter
The case where amount causes serpentine head and axle portion junction to be broken；Another kind is forged using horizontal forging and upsetting machine, processing technology compared with
For complexity, and it is higher to the required precision of mold, cause mould structure complicated, equipment cost is higher.
Summary of the invention
In view of the deficiencies of the prior art, one of the objects of the present invention is to provide a kind of hot extrusion molding sides of camshaft
Method can reduce the cost of camshaft processing under the premise of ensuring intensity.
The second object of the present invention is to provide a kind of extrusion die of camshaft.
To achieve the above object one, the present invention adopts the following technical scheme:
The hot extrusion molding method of wheel shaft, comprises the following steps:
Process A: a columned raw material is chosen, by the heating one end of the raw material to 1000-1200 DEG C, which is heated
Range is to extend 180-220mm towards the middle part of raw material by the one end of raw material；
Process B: by the vertical type chamber for being put into extrusion die of the raw material after being heated, so that the raw material is configured as this and be heated
One end pressure head of one end face extrusion die for being arranged upward, and being heated this；
Process C: starting extrusion die is moved down using pressure head and carries out precompressed to one end that raw material is heated, adds raw material
The oxide layer of hot one end falls off；
Step D: jumping-up is carried out to one end that raw material is heated using pressure head；
Process E: being heated portion of pressure to after jumping-up using the pressure head of extrusion die, is heated portion of raw material and is squeezing
The type of compression mould is intracavitary to be shaped to workpiece embryo material；
Process F: extrusion die is opened, and workpiece embryo material is demoulded from extrusion die, is made camshaft, at the same to extrusion die into
Row cooling.
In process F, graphite water formation mist is sprayed onto extrusion die, extrusion die is cooled down.
In process C, after using the one end being heated to raw material progress precompressed is moved down to pressure head, to raw material surface
Pressure-air is blown, the oxide layer for making raw material be heated one end falls off.
In process A, by the heating one end of raw material to 1150 DEG C.
To achieve the above object two, the present invention adopts the following technical scheme:
The extrusion die of camshaft, comprising:
Die holder, the receiving hole which is provided with a die joint and is extended downwardly by the die joint are provided on the die joint
Two movable blocks, which is respectively placed in the two sides of receiving hole, and movable block is slidably matched with die joint；
Driving mechanism, the driving mechanism are mutually harmonious for driving two movable blocks to slide on die joint so that two movable blocks are in
The molding and position held together or the die sinking position being separated from each other when two movable blocks are in die-closed position, surround one between the two
Type chamber；
Pressure head, the pressure head are located above die holder, and the setting of face above and below the pressure head and receiving hole, pressure head can be in the band of an actuator
Dynamic lower up and down motion；
Ejecting mechanism, the ejecting mechanism include wear the mandril connect in receiving hole, and for drive mandril move up and down gas
Cylinder or hydraulic cylinder.
Driving mechanism includes two driving hydraulic cylinders, and the cylinder body of two driving hydraulic cylinder is separately fixed at the both ends of die holder,
The telescopic rod of the two is respectively fixedly connected in the outside of two movable blocks.
Edge on die joint positioned at receiving hole is detachably and fixedly provided with two wear-resistant blocks, and two wear-resistant block is living with two respectively
Motion block is corresponding, and the bottom of each movable block is provided with the recess for avoiding wear-resistant block.
Fixed there are two the block for being located at die joint two sides respectively on die holder, two movable blocks are lived between two blocks
The side wall of motion block is bonded with the inner wall of block.
The beneficial effects of the present invention are:
Method of the invention selects the column raw material an of entirety, extrusion forming after heating to part of it, it is ensured that cam
The serpentine head of axis and axle portion are integrated, it is ensured that the intensity of camshaft prevents from being broken, meanwhile, the present invention is once squeezed into
Type simplifies production process, reduces equipment requirement, to reduce the manufacturing cost of camshaft.
Detailed description of the invention
Fig. 1 is the schematic diagram of the method for the present invention
Fig. 2 is the structural schematic diagram of extrusion die of the present invention；
Fig. 3 is the cross-sectional view of extrusion die of the present invention；
Fig. 4 is the structural schematic diagram of movable block in Fig. 3.
Specific embodiment
In the following, the invention will be further described in conjunction with the drawings and specific embodiments:
The hot extrusion molding method of camshaft of the present invention: following process is specifically included:
Process A: as shown in Figure 1, a columned raw material A is chosen, by the heating one end of the raw material to 1150 DEG C, in the temperature
Under, raw material A, which is heated portion of, to be softened, and so that formation one in the raw material A is heated portion of a, is heated portion of a and serves as reasons
One end of raw material A extends 200mm towards the middle part of raw material；
In the present invention, it is heated portion of the length of a, be approximately equal to camshaft serpentine head thickness by being preferable to provide 2.1
Times, so, it can be ensured that the serpentine head of camshaft can be formed after abundant be pressurized by being heated portion of a, simultaneously, it is ensured that quilt
Heated perimeter is not too big, and causes to cause at the position that camshaft serpentine head is connected with axle portion because heat treatment is improper
Loss of strength；
Process B: by the vertical type chamber for being put into extrusion die of the raw material A after being heated, being arranged raw material A city vertical state,
And it is heated portion of the end of a upward, and the pressure head of face extrusion die；
Process C: starting extrusion die is moved down using pressure head and is heated portion of a progress precompressed to raw material, adds raw material
The oxide layer of hot one end falls off, and during preventing subsequent forming, the oxide layer on surface forms recessed on the serpentine head of camshaft
Hole；
Step D: carrying out jumping-up to one end that raw material is heated using pressure head, so that being heated portion of the whole height of a reduces；
Process E: it is pressed using the pressure head of extrusion die to a that is heated portion of after jumping-up, so that raw material is heated portion of a and exist
The type of extrusion die is intracavitary to be shaped to workpiece embryo material；
Process F: extrusion die is opened, and workpiece embryo material is demoulded from extrusion die, is made camshaft, at the same to extrusion die into
Row cooling.
In one of preferred embodiment, in process F, cooling can also be that carry out of mold is formed graphite water
It after mist, being sprayed onto extrusion die, extrusion die is cooled down, graphite water can not only cool down the type chamber of mold, meanwhile, also
The inside of mold can be lubricated.
In another preferred embodiment, in process C, one be heated to raw material is moved down to pressure head when utilizing
After end carries out precompressed, pressure-air is blown to raw material surface, the oxide layer for making raw material be heated one end falls off, and prevents oxide layer from falling off
The type that residue afterwards stays in mold is intracavitary.
It should be noted that the heating temperature for being heated portion of a of raw material can be in process A of the invention
In 1000-1200 degree Celsius range, select according to the actual situation.
Method of the invention selects the column raw material an of entirety, extrusion forming after heating to part of it, it is ensured that
The serpentine head of camshaft and axle portion are integrated, it is ensured that the intensity of camshaft prevents from being broken, meanwhile, the present invention once squeezes
It is molded, production process is simplified, equipment requirement is reduced, to reduce the manufacturing cost of camshaft.
Referring to fig. 2,3,4, for a kind of extrusion die of camshaft of the present invention, be used in the above-mentioned methods, to raw material into
Row precompressed, jumping-up and extrusion forming, specifically, the extrusion die includes die holder 10, pressure head 20, ejecting mechanism 40, in die holder
10 upper surface forms a die joint, is additionally provided with a receiving hole 11 on die holder 10, the top end part of the receiving hole 11 extends to
Die joint, receiving hole 11 are used to accommodate raw material A during extrusion forming and not be heated portion of, meanwhile, what this was not heated
It is partially disposed in in that sky 11, making to be heated portion of the top that a exposes to receiving hole 11, that is, protrudes from die joint.In die holder
It is also set up on 10 there are two movable block 12, which is oppositely arranged and is separately positioned on the two sides of receiving hole 11, and two
Movable block 12 is slidably matched with die joint, and two movable blocks 12 slide on die joint under the drive of a driving mechanism, is driving
Under the drive of motivation structure, which can mutually close up in die-closed position or be separated from each other in die sinking position,
When two movable blocks 12 are in die-closed position, a type chamber is surrounded between the two, " S " of shape and camshaft which surrounds
Shape head shape is consistent, and type chamber is located at the surface of receiving hole 11.Pressure head 20 is located at the top of die holder 10, the pressure head 10 with
About 11 face of receiving hole, under the drive of an actuator, the pressure head 10 can move downward to raw material carry out precompressed, jumping-up and
Extrusion forming movement can also be moved upwards to reset.Ejecting mechanism includes wearing to connect the mandril 41 in receiving hole 11 and be used for
The cylinder 40 for driving mandril 41 to move up and down, certainly, which is also possible to be replaced with hydraulic cylinder.
When in use, driving will drive two movable blocks 12 to be in die-closed position to above-mentioned extrusion die, after being put into heating
Raw material, making to be heated portion of a, to be in the type that two movable blocks 12 surround intracavitary, should when pressure head is heated portion of a to this and squeezes
It is heated portion of that type that a is surrounded in movable block 12 is intracavitary to be shaped to serpentine head, then, from the bottom to top using ejecting mechanism,
Camshaft after molding is ejected, an extrusion forming of camshaft is can be realized, has the advantages that structure is simple.
It is hydraulic including two drivings for driving the driving mechanism of the molding of two movable blocks 12, die sinking can be in the present invention
Cylinder 30, which is respectively used for driving the movement of two movable blocks 12, specifically, the cylinder body of two driving hydraulic cylinders 30
Part is fixed on the both ends of die holder 10, and the telescopic rod of the two is respectively fixedly connected in the outside of two movable blocks 12；Certainly, it drives
Hydraulic cylinder 30 can also be other mechanisms, as long as it is close to each other or be mutually located remotely from each other to be able to drive two movable blocks 12.
In order to improve service life, the edge on die joint positioned at receiving hole 11 is detachably and fixedly provided with two wear-resistant blocks
14, two wear-resistant block 14 is corresponding with two movable blocks 12 respectively, and the bottom of each movable block 12 be provided with it is resistance to for avoiding
The recess 121 of abrading block 14, when use the long period, when wear-resistant block 14 wears the more serious machining accuracy for having influenced camshaft,
The wear-resistant block 14 of abrasion can be dismantled, the wear-resistant block more renewed.
Two blocks 13 are further fixed on die holder 10, which is separately fixed at the two sides of die holder 10, i.e., and two
Block 13 is located at the two sides of die joint, and two movable blocks 12 are respectively positioned between two blocks 13, the side wall and gear of movable block 12
The inner wall of block 13 is bonded, and is played the role of limit to movable block 12 using two block 13, is further improved the precision of mold.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that, it still can be to aforementioned each implementation
Technical solution documented by example modify perhaps equivalent replacement of some of the technical features and these modifications or
Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (8)
1. the hot extrusion molding method of camshaft, which is characterized in that comprise the following steps:
Process A: a columned raw material is chosen, by the heating one end of the raw material to 1000-1200 DEG C, which is heated
Range is to extend 180-220mm towards the middle part of raw material by the one end of raw material；
Process B: by the vertical type chamber for being put into extrusion die of the raw material after being heated, so that the raw material is configured as this and be heated
One end pressure head of one end face extrusion die for being arranged upward, and being heated this；
Process C: starting extrusion die is moved down using pressure head and carries out precompressed to one end that raw material is heated, adds raw material
The oxide layer of hot one end falls off；
Step D: jumping-up is carried out to one end that raw material is heated using pressure head；
Process E: being heated portion of pressure to after jumping-up using the pressure head of extrusion die, is heated portion of raw material and is squeezing
The type of compression mould is intracavitary to be shaped to workpiece embryo material；
Process F: extrusion die is opened, and workpiece embryo material is demoulded from extrusion die, is made camshaft, at the same to extrusion die into
Row cooling.
2. the hot extrusion molding method of camshaft as described in claim 1, which is characterized in that in process F, by graphite water shape
Mist formation is sprayed onto extrusion die and cools down to extrusion die.
3. the hot extrusion molding method of camshaft as described in claim 1, which is characterized in that in process C, using to pressure
After head moves down one end progress precompressed being heated to raw material, pressure-air is blown to raw material surface, raw material is made to be heated one end
Oxide layer fall off.
4. the hot extrusion molding method of camshaft as described in claim 1, which is characterized in that in process A, by the one of raw material
End is heated to 1150 DEG C.
5. the extrusion die of camshaft characterized by comprising
Die holder, the receiving hole which is provided with a die joint and is extended downwardly by the die joint are provided on the die joint
Two movable blocks, which is respectively placed in the two sides of receiving hole, and movable block is slidably matched with die joint；
Driving mechanism, the driving mechanism are mutually harmonious for driving two movable blocks to slide on die joint so that two movable blocks are in
The molding and position held together or the die sinking position being separated from each other when two movable blocks are in die-closed position, surround one between the two
Type chamber；
Pressure head, the pressure head are located above die holder, and the setting of face above and below the pressure head and receiving hole, pressure head can be in the band of an actuator
Dynamic lower up and down motion；
Ejecting mechanism, the ejecting mechanism include wear the mandril connect in receiving hole, and for drive mandril move up and down gas
Cylinder or hydraulic cylinder.
6. the extrusion die of camshaft as claimed in claim 5, which is characterized in that driving mechanism includes that two drivings are hydraulic
Cylinder, the cylinder body of two driving hydraulic cylinder are separately fixed at the both ends of die holder, and the telescopic rod of the two is respectively fixedly connected with living two
The outside of motion block.
7. the extrusion die of camshaft as claimed in claim 5, which is characterized in that the edge on die joint positioned at receiving hole can
There are two wear-resistant blocks for the fixation of disassembly, and two wear-resistant block is corresponding with two movable blocks respectively, and the bottom of each movable block is all provided with
It is equipped with the recess for avoiding wear-resistant block.
8. the extrusion die of camshaft as claimed in claim 5, which is characterized in that fixed on die holder there are two be located to divide respectively
The block of type face two sides, two movable blocks are between two blocks, and the side wall of movable block is bonded with the inner wall of block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811262421.6A CN109433842A (en) | 2018-10-27 | 2018-10-27 | The hot extrusion molding method and extrusion die of camshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811262421.6A CN109433842A (en) | 2018-10-27 | 2018-10-27 | The hot extrusion molding method and extrusion die of camshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109433842A true CN109433842A (en) | 2019-03-08 |
Family
ID=65548946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811262421.6A Pending CN109433842A (en) | 2018-10-27 | 2018-10-27 | The hot extrusion molding method and extrusion die of camshaft |
Country Status (1)
| Country | Link |
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| CN (1) | CN109433842A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113579138A (en) * | 2021-06-11 | 2021-11-02 | 福建恒劲科技有限公司 | Insulated Gate Bipolar Transistor (IGBT) electric heating spline warm extrusion forming complete equipment and forming process |
Citations (6)
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|---|---|---|---|---|
| BE682983A (en) * | 1963-07-22 | 1966-12-01 | ||
| DE1911657A1 (en) * | 1969-03-07 | 1970-10-08 | Kabel Metallwerke Ghh | Method of manufacturing bevel gears |
| CN101850399A (en) * | 2010-05-14 | 2010-10-06 | 付仕忠 | Process method for forging brake cam of automobile |
| CN201799555U (en) * | 2010-08-02 | 2011-04-20 | 天津市天锻压力机有限公司 | Large screw forging die |
| CN102240773A (en) * | 2010-05-14 | 2011-11-16 | 付仕忠 | Device for forging automobile brake camshaft |
| CN209206076U (en) * | 2018-10-27 | 2019-08-06 | 广东富华重工制造有限公司 | The extrusion die of camshaft |
-
2018
- 2018-10-27 CN CN201811262421.6A patent/CN109433842A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE682983A (en) * | 1963-07-22 | 1966-12-01 | ||
| DE1911657A1 (en) * | 1969-03-07 | 1970-10-08 | Kabel Metallwerke Ghh | Method of manufacturing bevel gears |
| CN101850399A (en) * | 2010-05-14 | 2010-10-06 | 付仕忠 | Process method for forging brake cam of automobile |
| CN102240773A (en) * | 2010-05-14 | 2011-11-16 | 付仕忠 | Device for forging automobile brake camshaft |
| CN201799555U (en) * | 2010-08-02 | 2011-04-20 | 天津市天锻压力机有限公司 | Large screw forging die |
| CN209206076U (en) * | 2018-10-27 | 2019-08-06 | 广东富华重工制造有限公司 | The extrusion die of camshaft |
Non-Patent Citations (1)
| Title |
|---|
| 上海市第一机电工业局《读本》编审委员会: "《锻工》", 31 October 1973, 机械工业出版, pages: 72 - 75 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113579138A (en) * | 2021-06-11 | 2021-11-02 | 福建恒劲科技有限公司 | Insulated Gate Bipolar Transistor (IGBT) electric heating spline warm extrusion forming complete equipment and forming process |
| CN113579138B (en) * | 2021-06-11 | 2023-02-28 | 福建恒劲科技有限公司 | Insulated Gate Bipolar Transistor (IGBT) electric heating spline warm extrusion forming complete equipment and forming process |
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