CN108817870A - A kind of speed reducer minute gear cold extrusion technology - Google Patents
A kind of speed reducer minute gear cold extrusion technology Download PDFInfo
- Publication number
- CN108817870A CN108817870A CN201810717892.5A CN201810717892A CN108817870A CN 108817870 A CN108817870 A CN 108817870A CN 201810717892 A CN201810717892 A CN 201810717892A CN 108817870 A CN108817870 A CN 108817870A
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- Prior art keywords
- blank
- speed reducer
- blanking
- mold core
- carried out
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- 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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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/26—Making other particular articles wheels or the like
- B21D53/28—Making other particular articles wheels or the like gear wheels
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a kind of speed reducer minute gear cold extrusion technology, the technique the specific steps are：Blanking-heat treatment-ball blast-phospholeum-is preforming-phospholeum-crowded teeth-machining, compared with prior art, parts of tooth surface roughness can reach traditional handicraft to the technique, it is not required to following process, production efficiency is improved, and guarantees that the mechanical property of finished product is more preferable, stock utilization is high.
Description
Technical field
The present invention relates to auto parts machinery production technical field, specifically a kind of speed reducer minute gear cold-extrusion shaping work
Skill.
Background technique
Speed reducer plays a part of to match revolving speed between prime mover and working machine or executing agency and transmits torque, in the modern times
Using extremely wide in machinery.In the prior art for the bevel gear of minor diameter in speed reducer, mostly use rolling greatly, insert, mill etc.
Traditional processing mode, but the processing method has stock utilization low, low at production efficiency, product service performance is generally waited and is lacked
Point.
Cold extruding technique is a kind of efficient chip processing technology less, and precision is high, after production efficiency forming with higher
Higher comprehensive mechanical property and preferable products surface quality can be obtained.As automobile is to high-performance, low cost, low energy consumption
The development in direction, the auto parts for shaping small size or nearly forming complexity only using cold-extrusion technology are current auto manufacturings
Development trend.
Summary of the invention
Goal of the invention：In order to solve the deficiencies in the prior art, the present invention provides a kind of speed reducer minute gear cold extrusions
The teeth portion of forming technology, the complete part of cold extrusion is just not necessarily to reprocess, and is greatly improved production efficiency, and product size is stable, has
Effect utilizes material, optimizes properties of product.
Technical solution：In order to achieve the goal above, a kind of speed reducer minute gear cold-extrusion shaping work of the present invention
Skill, specific step is as follows for the technique：
(a) blanking
Nominal weight cylindrical bar identical with forge weight is selected, sawed-off blanking is then carried out by blanking machine and is obtained
Blank；
(b) it is heat-treated
Normalized treatment is carried out to the blank after blanking；
(c) ball blast
Blank after heat treatment is subjected to Shot Blasting to bar by drum-type shot blasting machine to remove the oxygen of billet surface
Change skin and attachment；
(d) phospholeum
Phosphorus saponification process is carried out to the blank after Shot Blasting；
(e) preforming
By phospholeumization, treated that blank is placed in the mold core A of preforming tool, and blank is located at the top pillar A's in mold core A
Top, the formed punch A of blank side are moved with the sliding block of press machine to the direction of blank, are carried out punching press to blank, are obtained blank
The circular arc of upper surface and pit with lower surface extrude blank upper surface circular arc by using preforming process, can effectively keep away
Exempt from final products flank of tooth defect caused by end face is there are burr when because of blanking, blank lower end surface pit is easy in crowded teeth station workpiece
Heart positioning；
(f) phospholeum
Phosphorus saponification process is carried out to preforming treated blank；
(g) crowded teeth
By phospholeumization, treated that blank is placed in crowded teeth mold on lower mold core B, and the lower section of blank is equipped with top pillar B, blank
On pit be placed on top pillar B, the formed punch B above blank is moved downward with the sliding block of press machine, to blank carry out punching press, obtain
To the umbrella shape toothed portion of blank upper surface, then press machine control formed punch B is moved to the opposite direction of blank, removes upper mold core B, is pushed up
Column B ejects the blank after the completion of crowded teeth；
(h) it machines
The blank after the completion of crowded teeth is positioned using quick clamping tool fixture, blank forming is gone out by machining
Outer circle, inner hole and end face.
As present invention further optimization, upper mold core B described in the step (g) and formed punch B is equipped with and umbrella
The compatible shape of shape toothed portion.
As present invention further optimization, turnery processing is machined as described in the step (h).
Shot-blasting machine be by impeller head by steel sand shot high speed falling impact material surface a kind of processing technique,
Almost all of steel-casting, grey casting, malleable iron component, G. Iron Castings etc. will carry out Shot Blasting.This is not only for removing casting
Surface scale and scab, while being also indispensable preparatory process before casting quality checks, non-ferrous casting, as aluminium closes
The removing surface of gold, copper alloy etc., except descaling, find casting surface defect in addition to, more main purpose be with throw spray
Ball come remove press forging casting die burr and improve surface roughness, keep product appearance further beautiful.
Beneficial effect：A kind of speed reducer minute gear cold extrusion technology of the present invention, compared with prior art,
Parts of tooth surface roughness can reach traditional handicraft, be not required to following process, improve production efficiency, and guarantee the mechanics of finished product
Performance is more preferable, and stock utilization is high.
Detailed description of the invention
Fig. 1 is the forming process figure of blank；
Fig. 2 is the full sectional view of preforming tool；
Fig. 3 is the full sectional view of crowded teeth mold.
Specific embodiment
In the following with reference to the drawings and specific embodiments, the present invention is furture elucidated.
As shown in Figure 1, a kind of speed reducer minute gear cold extrusion technology of the present invention, the specific step of the technique
Suddenly it is：Blanking-heat treatment-ball blast-phospholeum-is preforming-phospholeum-crowded teeth-machining.
Embodiment
(a) blanking
Nominal weight cylindrical bar identical with forge weight is selected, sawed-off blanking is then carried out by blanking machine and is obtained
Blank 10；
(b) it is heat-treated
Normalized treatment is carried out to the blank 10 after blanking, so that blank is reached predetermined hardness by normalized treatment；
(c) ball blast
Blank 10 after heat treatment is subjected to Shot Blasting to bar by drum-type shot blasting machine to remove billet surface
Oxide skin and attachment；
(d) phospholeum
Phosphorus saponification process is carried out to the blank 10 after Shot Blasting；
(e) preforming
By phospholeumization, treated that blank is placed in the mold core A 11 of preforming tool 1, and blank 10 is located in mold core A 11
The top of top pillar A13, the formed punch A12 of 10 side of blank is moved with the sliding block of press machine to the direction of blank 10, to blank 10
Punching press is carried out, obtains the circular arc of 10 upper surface of blank and the pit with lower surface, as shown in Figure 2；
(f) phospholeum
Phosphorus saponification process is carried out to preforming treated blank 10；
(g) crowded teeth
By phospholeumization, treated that blank 10 is placed in crowded teeth mold 2 on lower mold core B2, and the lower section of blank 10 is equipped with top pillar
B24, the pit on blank 10 are placed on top pillar B24, and the formed punch B23 of 10 top of blank is moved downward with the sliding block of press machine,
Punching press is carried out to blank 10, obtains the umbrella shape toothed portion of 10 upper surface of blank, then press machine controls formed punch B23 to blank 10
Opposite direction movement, removes upper mold core B21, and top pillar B24 ejects the blank 10 after the completion of crowded teeth, as shown in figure 3, by using in advance at
The process of type extrudes 10 upper surface circular arc of blank, can effectively avoid the final products flank of tooth caused by end face is there are burr when because of blanking and lacks
Fall into, 10 lower end surface pit of blank is easy for the positioning of crowded teeth station workpiece centre, upper mold core B (21) and formed punch B (23) equipped with
The compatible shape of umbrella shape toothed portion；
(h) it machines
The blank 10 after the completion of crowded teeth is positioned using quick clamping tool fixture, to blank by way of turning
10 process outer circle, inner hole and end face.
The technical concepts and features of above embodiment only to illustrate the invention, the purpose is to allow be familiar with the technical field
Technical staff cans understand the content of the present invention and implement it accordingly, and can not limited the scope of the invention with this.All
The equivalent changes or modifications made according to spirit of the invention, should be covered by the protection scope of the present invention.
Claims (3)
1. a kind of speed reducer minute gear cold extrusion technology, which is characterized in that specific step is as follows for the technique：
(a) blanking
Nominal weight cylindrical bar identical with forge weight is selected, sawed-off blanking is then carried out by blanking machine and obtains blank
(10)；
(b) it is heat-treated
Normalized treatment is carried out to the blank (10) after blanking；
(c) ball blast
Blank (10) after heat treatment is subjected to Shot Blasting to bar by drum-type shot blasting machine to remove the oxygen of billet surface
Change skin and attachment；
(d) phospholeum
Phosphorus saponification process is carried out to the blank (10) after Shot Blasting；
(e) preforming
By in the mold core A (11) of phospholeumization treated blank is placed on preforming tool (1), blank (10) is located at mold core A (11)
The top of interior top pillar A (13), the formed punch A (12) of blank (10) side are transported with the sliding block of press machine to the direction of blank (10)
It is dynamic, punching press is carried out to blank (10), obtains the circular arc of blank (10) upper surface and the pit with lower surface；
(f) phospholeum
Phosphorus saponification process is carried out to preforming treated blank (10)；
(g) crowded teeth
By phospholeumization, treated that blank (10) is placed on the interior lower mold core B (2) of crowded teeth mold (2), and the lower section of blank (10) is equipped with
Top pillar B (24), the pit on blank (10) are placed on top pillar B (24), and the formed punch B (23) above blank (10) is with press machine
Sliding block moves downward, and carries out punching press to blank (10), obtains the umbrella shape toothed portion of blank (10) upper surface, then press machine controls
Formed punch B (23) is moved to the opposite direction of blank (10), is removed upper mold core B (21), and top pillar B (24) ejects the blank after the completion of crowded teeth
(10)；
(h) it machines
The blank (10) after the completion of crowded teeth is positioned using quick clamping tool fixture, blank (10) are added by machining
Work goes out outer circle, inner hole and end face.
2. a kind of speed reducer minute gear cold extrusion technology according to claim 1, it is characterised in that：The step
Suddenly upper mold core B described in (g) (21) and formed punch B (23) are equipped with shape compatible with umbrella shape toothed portion.
3. a kind of speed reducer minute gear cold extrusion technology according to claim 1, it is characterised in that：The step
Suddenly turnery processing is machined as described in (h).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810717892.5A CN108817870A (en) | 2018-07-03 | 2018-07-03 | A kind of speed reducer minute gear cold extrusion technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810717892.5A CN108817870A (en) | 2018-07-03 | 2018-07-03 | A kind of speed reducer minute gear cold extrusion technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108817870A true CN108817870A (en) | 2018-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810717892.5A Pending CN108817870A (en) | 2018-07-03 | 2018-07-03 | A kind of speed reducer minute gear cold extrusion technology |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111346987A (en) * | 2020-04-11 | 2020-06-30 | 陈锡元 | Musical instrument string button gear machining process |
| CN111672925A (en) * | 2020-07-21 | 2020-09-18 | 四川大学 | Electric field assisted titanium alloy micro-gear extrusion forming die and method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5516376A (en) * | 1993-05-26 | 1996-05-14 | Nissan Motor Co., Ltd. | Method of, and apparatus for manufacturing a gear with a central through hole |
| EP0925857A2 (en) * | 1997-12-26 | 1999-06-30 | Metalart Corporation | Speed gear and manufacturing method and apparatus for it |
| CN102284831A (en) * | 2010-06-18 | 2011-12-21 | 上海久丰汽车零件有限公司 | Cold extrusion molding technology of pinion shaft of power steering gear |
| CN102463320A (en) * | 2010-11-11 | 2012-05-23 | 江苏威鹰机械有限公司 | Cold forging precise forming process for mechanical transmission gear shaft |
| DE102010060927A1 (en) * | 2010-12-01 | 2012-06-06 | Wf-Maschinenbau Und Blechformtechnik Gmbh & Co. Kg | Method for manufacturing pot-like rotationally symmetrical gear part with inner helical teeth, involves pressing annular flange under formation of inner helical teeth against mold teeth of die |
-
2018
- 2018-07-03 CN CN201810717892.5A patent/CN108817870A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5516376A (en) * | 1993-05-26 | 1996-05-14 | Nissan Motor Co., Ltd. | Method of, and apparatus for manufacturing a gear with a central through hole |
| EP0925857A2 (en) * | 1997-12-26 | 1999-06-30 | Metalart Corporation | Speed gear and manufacturing method and apparatus for it |
| CN102284831A (en) * | 2010-06-18 | 2011-12-21 | 上海久丰汽车零件有限公司 | Cold extrusion molding technology of pinion shaft of power steering gear |
| CN102463320A (en) * | 2010-11-11 | 2012-05-23 | 江苏威鹰机械有限公司 | Cold forging precise forming process for mechanical transmission gear shaft |
| DE102010060927A1 (en) * | 2010-12-01 | 2012-06-06 | Wf-Maschinenbau Und Blechformtechnik Gmbh & Co. Kg | Method for manufacturing pot-like rotationally symmetrical gear part with inner helical teeth, involves pressing annular flange under formation of inner helical teeth against mold teeth of die |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111346987A (en) * | 2020-04-11 | 2020-06-30 | 陈锡元 | Musical instrument string button gear machining process |
| CN111672925A (en) * | 2020-07-21 | 2020-09-18 | 四川大学 | Electric field assisted titanium alloy micro-gear extrusion forming die and method thereof |
| CN111672925B (en) * | 2020-07-21 | 2021-05-04 | 四川大学 | Electric field assisted titanium alloy micro-gear extrusion forming die and method thereof |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181116 |
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| RJ01 | Rejection of invention patent application after publication |