CN100571916C - A kind of cold extrusion device that is squeezed into pipe with solid bar - Google Patents
A kind of cold extrusion device that is squeezed into pipe with solid bar Download PDFInfo
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- CN100571916C CN100571916C CNB200610054587XA CN200610054587A CN100571916C CN 100571916 C CN100571916 C CN 100571916C CN B200610054587X A CNB200610054587X A CN B200610054587XA CN 200610054587 A CN200610054587 A CN 200610054587A CN 100571916 C CN100571916 C CN 100571916C
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Abstract
The invention discloses a kind of method and cold extrusion device thereof that is squeezed into pipe with solid bar, may further comprise the steps: on the die cavity, pressure head is descending in a) bar being placed on, and the center of bar penetrates in the circular core rod that is fixed on lower mould, bar forms the pipe that has blind hole, is enclosed within on the core rod; B) pressure head is up, leaves middle die cavity, puts a bar at middle die cavity again, and pressure head is descending, after the bar the put into pipe that will have a blind hole continue extruding downwards, the blind hole of pipe is punched, and forms tubing; C) pressure head is up, leaves middle die cavity; Push pedal is up, and the tubing pipe that push rod extruding successively forms ejects middle die cavity.Cold extrusion device comprises hydraulic press and the mould with upper and lower oil cylinder, and mould is made up of pressure head, middle mould, counterdie, push pedal, and the center of middle mould is provided with middle die cavity, and the center of counterdie is provided with cylindrical core rod, and push pedal is provided with at least 3 push rods.The present invention can be squeezed into pipe with solid bar, and the compactness of its metal is than the tubing height that stretches and form, and processing cost is low, cold extrusion device structural design novelty of the present invention, reasonable.
Description
Technical field
Invention relates to a kind of method and cold extrusion device thereof that is squeezed into pipe with solid bar.
Background technology
In present processing tubular metallic element, generally all be to adopt long metal pipe is sawn into needed length earlier, carry out cold extrusion and machining then, metal pipe material price comparison height is wasted greatly during blanking, and, no matter calculate discharge, all can lose material, processing cost is improved.Metal pipe material generally is formed by stretching, and the compactness of its metal is not passed through the tubing height of extrusion modling, and is also not long through the tubing of extrusion modling service life with the tubular metallic element of its processing.
Summary of the invention
Purpose of the present invention is exactly at the deficiencies in the prior art, and a kind of method and cold extrusion device thereof that is squeezed into pipe with solid bar is provided.
For achieving the above object, the present invention adopts following technical scheme:
A kind ofly be squeezed into the method for pipe, it is characterized in that may further comprise the steps with solid bar:
A), weight is identical with the weight of tubing that will moulding, the bar that has calculated diameter, height is placed on the middle die cavity of middle mould of extrusion die, hydraulic piston on the primer fluid press, the pressure head of mould is descending, the center of bar penetrates in the circular core rod that is fixed on lower mould, make bar form the pipe that has blind hole, be enclosed within on the core rod;
B), hydraulic piston on the primer fluid press, the pressure head of mould is up, the middle die cavity of mould in leaving, again the middle die cavity of middle mould put one with step a in identical bar, hydraulic piston on the primer fluid press, the pressure head of mould is descending, after the bar put into the pipe that step a has blind hole is continued extruding downwards, the blind hole that has the pipe of blind hole among the step a is punched, and forms tubing; The bar of then putting into forms the pipe that has blind hole again;
C), hydraulic piston on the primer fluid press, the pressure head of mould is up, the middle die cavity of mould in leaving; Hydraulic piston under the primer fluid press, push pedal is up, and the push rod in the push pedal ejects the middle die cavity of middle mould with step a, with the tubing pipe of extruding formation successively among the step b.
A kind ofly realize the above-mentioned cold extrusion device that is squeezed into the tube side method with solid bar, comprise hydraulic press and mould with upper and lower oil cylinder, described mould is made up of cylindrical pressure head, middle mould, counterdie, push pedal, and the ring flange of pressure head is fixedlyed connected with the piston of hydraulic press upper cylinder; The circular depressed that middle mould is provided with by the lower end, the round boss that is provided with the upper end of counterdie cooperates, and middle mould is connected with counterdie, and counterdie places on the gripper shoe; Middle mould, counterdie are fixed on the gripper shoe by screw rod by the adpting flange on the round boss of middle mould upper end, and the center of middle mould is provided with cylindrical middle die cavity, and the center of counterdie is provided with cylindrical core rod, and pressure head, middle die cavity, cylindrical core rod are on same axis; Push pedal place gripper shoe below, fixedly connected with the piston of oil cylinder under the hydraulic press, push pedal is provided with at least 3 push rods, push rod passes gripper shoe, counterdie, the bottom of the annulus that forms between die cavity and the cylindrical core rod in being evenly distributed on.
The top of described cylindrical core rod is spherical or conical, connects a cylindrical calibrating strap in spherical or conical bottom, and the hypomere of calibrating strap is the cylindrical core rod less than the calibrating strap diameter, and the length of calibrating strap is 2～10mm.The diameter of calibrating strap is the diameter of the pipe after the moulding, because calibrating strap length is shorter, can limit the diameter of pipe, has reduced the resistance of extruding again.
The diameter of middle die cavity is greater than the diameter 0.5～3mm of pressure head.
Mould is 2～4 layers in described, and every circular depressed that is provided with by the lower end, upper strata between two-layer is connected with the round boss that is provided with on following one deck.Sandwich construction is convenient to processing, and the processing of the length of die cavity meets the requirements in making; Protruding, recessed being connected firmly between two-layer do not produce displacement.
Be provided with in the upper edge of middle die cavity and lead mouth.Leading mouth can play the guiding role.
Middle die cavity is to be nested on the middle mould by the up big and down small frustum of a cone.Middle die cavity adopts nesting type structure, and the nested metal material processing that can select high rigidity improves service life, promptly is convenient to change and has reduced manufacturing cost again.
Preferably, the push rod in the push pedal is 6, evenly distributes.
A kind of method and cold extrusion device thereof that is squeezed into pipe with solid bar of the present invention, can be squeezed into pipe with solid bar, the compactness of its metal is than the tubing height that stretches and form, tubular metallic element long service life with its processing, economical with materials, processing cost is low, cold extrusion device structural design novelty of the present invention, reasonable.
Description of drawings
Fig. 1 is the structural representation of cold extrusion device of the present invention
Fig. 2 is the present invention is squeezed into pipe with solid bar a process schematic diagram
The specific embodiment
The present invention is further illustrated below in conjunction with accompanying drawing, referring to Fig. 2:
A kind ofly be squeezed into the method for pipe, it is characterized in that may further comprise the steps with solid bar:
A), weight is identical with the weight of tubing that will moulding, the bar that has calculated diameter, height is placed on the middle die cavity of middle mould of extrusion die, hydraulic piston on the primer fluid press, the pressure head of mould is descending, the center of bar penetrates in the circular core rod that is fixed on lower mould, make bar form the pipe that has blind hole, be enclosed within on the core rod;
B), hydraulic piston on the primer fluid press, the pressure head of mould is up, the middle die cavity of mould in leaving, again the middle die cavity of middle mould put one with step a in identical bar, hydraulic piston on the primer fluid press, the pressure head of mould is descending, after the bar put into the pipe that step a has blind hole is continued extruding downwards, the blind hole that has the pipe of blind hole among the step a is punched, and forms tubing; The bar of then putting into forms the pipe that has blind hole again;
C), hydraulic piston on the primer fluid press, the pressure head of mould is up, the middle die cavity of mould in leaving; Hydraulic piston under the primer fluid press, push pedal is up, and the push rod in the push pedal ejects the middle die cavity of middle mould with step a, with the tubing pipe of extruding formation successively among the step b.
Referring to Fig. 1: shown in a kind ofly realize the above-mentioned cold extrusion device that is squeezed into the tube side method with solid bar, comprise hydraulic press and mould with upper and lower oil cylinder, it is characterized in that: described mould is made up of cylindrical pressure head 1, middle mould 2, counterdie 3, push pedal 4, and the ring flange 11 of pressure head 1 is fixedlyed connected with the piston of hydraulic press upper cylinder; The circular depressed that middle mould 2 is provided with by the lower end, the round boss that is provided with the upper end of counterdie 3 cooperates, and middle mould 2 is connected with counterdie 3, and counterdie 3 places on the gripper shoe 5; Middle mould 2, counterdie 3 are fixed on the gripper shoe 5 by screw rod 61 by the adpting flange 6 on the middle mould 2 upper end round boss, the center of middle mould 2 is provided with cylindrical middle die cavity 21, the center of counterdie 3 is provided with cylindrical core rod 31, and pressure head 1, middle die cavity 21, cylindrical core rod 31 are on same axis; Push pedal 4 place gripper shoe 5 below, fixedly connected with the piston of oil cylinder under the hydraulic press, push pedal 4 is provided with at least 3 push rods 41, push rod 41 passes gripper shoe 5, counterdie 3, the bottom of the annulus that forms between die cavity 21 and the cylindrical core rod 31 in being evenly distributed on.
The top of described cylindrical core rod 31 is spherical or conical, connects a cylindrical calibrating strap 32 in spherical or conical bottom, and the hypomere of calibrating strap 32 is the cylindrical core rod 31 less than calibrating strap 32 diameters, and the length of calibrating strap 32 is 2～10mm.
The diameter of middle die cavity 21 is greater than the diameter 0.5～3mm of pressure head 1.
Mould 2 is 2～4 layers in described, and every circular depressed that is provided with by the lower end, upper strata between two-layer is connected with the round boss that is provided with on following one deck.
Be provided with in the upper edge of middle die cavity 21 and lead mouth.
Middle die cavity 21 is to be nested on the middle mould 2 by the up big and down small frustum of a cone.
Push rod 41 in the push pedal 4 is 6, evenly distributes.
Claims (7)
1, a kind of cold extrusion device that is squeezed into pipe with solid bar, comprise hydraulic press and mould with upper and lower oil cylinder, it is characterized in that: described mould is made up of cylindrical pressure head (1), middle mould (2), counterdie (3), push pedal (4), and the ring flange (11) of pressure head (1) is fixedlyed connected with the piston of hydraulic press upper cylinder; The circular depressed that middle mould (2) is provided with by the lower end, the round boss that is provided with the upper end of counterdie (3) cooperates, and middle mould (2) is connected with counterdie (3), and counterdie (3) places on the gripper shoe (5); Middle mould (2), counterdie (3) are fixed on the gripper shoe (5) by screw rod (61) by the adpting flange (6) on the round boss of middle mould (2) upper end, the center of middle mould (2) is provided with cylindrical middle die cavity (21), the center of counterdie (3) is provided with cylindrical core rod (31), and pressure head (1), middle die cavity (21), cylindrical core rod (31) are on same axis; Push pedal (4) place gripper shoe (5) below, fixedly connected with the piston of oil cylinder under the hydraulic press, push pedal (4) is provided with at least 3 push rods (41), push rod (41) passes gripper shoe (5), counterdie (3), is evenly distributed on the bottom of the annulus that forms between middle die cavity (21) and the cylindrical core rod (31).
2, the cold extrusion device that is squeezed into pipe with solid bar according to claim 1, it is characterized in that: the top of described cylindrical core rod (31) is spherical or conical, connect a cylindrical calibrating strap (32) in spherical or conical bottom, the hypomere of calibrating strap (32) is that the length of calibrating strap (32) is 2～10mm less than the cylindrical core rod (31) of calibrating strap (32) diameter.
3, according to claim 1ly be squeezed into the cold extrusion device of pipe with solid bar, it is characterized in that: the diameter of middle die cavity (21) is greater than the diameter 0.5～3mm of pressure head (1).
4, the cold extrusion device that is squeezed into pipe with solid bar according to claim 1, it is characterized in that: mould (2) is 2～4 layers in described, the circular depressed that is provided with by the lower end, upper strata between whenever two-layer, the round boss that is provided with following one deck upper end is connected.
5, according to claim 1ly be squeezed into the cold extrusion device of pipe, it is characterized in that: be provided with in the upper edge of middle die cavity (21) and lead mouth with solid bar.
6, according to claim 1ly be squeezed into the cold extrusion device of pipe with solid bar, it is characterized in that: middle die cavity (21) is to be nested on the middle mould (2) by the up big and down small frustum of a cone.
7, according to claim 1ly be squeezed into the cold extrusion device of pipe with solid bar, it is characterized in that: the push rod (41) in the push pedal (4) is 6, evenly distributes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610054587XA CN100571916C (en) | 2006-11-10 | 2006-11-10 | A kind of cold extrusion device that is squeezed into pipe with solid bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610054587XA CN100571916C (en) | 2006-11-10 | 2006-11-10 | A kind of cold extrusion device that is squeezed into pipe with solid bar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1986096A CN1986096A (en) | 2007-06-27 |
| CN100571916C true CN100571916C (en) | 2009-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200610054587XA Expired - Fee Related CN100571916C (en) | 2006-11-10 | 2006-11-10 | A kind of cold extrusion device that is squeezed into pipe with solid bar |
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| CN (1) | CN100571916C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103567763B (en) * | 2013-10-31 | 2015-12-02 | 中北大学 | A kind of extrusion forming method of large-scale long cone loudspeaker barrier part |
| CN104741403A (en) * | 2015-03-20 | 2015-07-01 | 毛水忠 | Extrusion forming method by use of solid bar and cold extruding device |
| CN104741457B (en) * | 2015-03-25 | 2017-11-03 | 诸城市福日机械有限公司 | A kind of automobile rear axle shaft sleeve coining die |
| CN110090873B (en) * | 2019-05-24 | 2020-06-02 | 合肥百恒设备模具有限公司 | Extrusion forming device for aluminum part stamping parts |
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2006
- 2006-11-10 CN CNB200610054587XA patent/CN100571916C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1986096A (en) | 2007-06-27 |
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