CN110328270A - Bolt blank undergauge treatment process - Google Patents
Bolt blank undergauge treatment process Download PDFInfo
- Publication number
- CN110328270A CN110328270A CN201910468617.9A CN201910468617A CN110328270A CN 110328270 A CN110328270 A CN 110328270A CN 201910468617 A CN201910468617 A CN 201910468617A CN 110328270 A CN110328270 A CN 110328270A
- Authority
- CN
- China
- Prior art keywords
- bolt blank
- bolt
- undergauge
- punching hole
- blank
- 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.)
- Pending
Links
Classifications
-
- 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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
- B21D22/022—Stamping using rigid devices or tools by heating the blank or stamping associated with heat treatment
-
- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
-
- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/18—Lubricating, e.g. lubricating tool and workpiece simultaneously
Abstract
The present invention relates to a kind of bolt blank undergauge treatment process, the material of the bolt blank is round steel, it is comprised the technical steps that: (1) configuring digestant, industrial soap, paraffin, lime, water are mixed according to mass ratio 2.5:1:2:500, and stir, digestant is made；(2) digestant is heated to boiling by bolt blank boiling, and bolt blank, boiling 1-2h are added thereto；(3) bolt blank punching press, by the molding die of well-done bolt blank placement impact molding machine, impact molding machine cold extrusion, disposable extrusion forming completes the undergauge processing of bolt blank.It provides convenience condition for final extrusion forming, to realize an extrusion forming.
Description
Technical field
The present invention relates to technical field of bolt processing, and in particular to a kind of bolt blank undergauge treatment process.
Background technique
Bolt: machine components, the cylindrical threaded fastener of adapted nut.External screw thread (is had by head and screw rod
Cylindrical body) a kind of fastener dimerous, need to cooperate with nut, for being fastenedly connected two parts with through-hole.
This type of attachment claims to be bolted.As nut is screwed off from bolt, and the two parts can be made to separate, therefore be bolted
It is to belong to be detachably connected.
The undergauge processing of previous bolt, especially large-sized bolt, typically carry out carry out turnery processing using lathe, adopt
Processing bolt blank in this way, production process is complicated, and higher cost, qualification rate is low, producer's large labor intensity.
Baidu library, the paper of 2015.10.14 mono- entitled " the undergauge problem in bolt cold upsetting production of having a talk " are public
Bolt is opened before carrying out cold-heading undergauge, needs to carry out phosphatization saponification process, but its phosphatization is saponified complex treatment process, and
Secondary or multiple cold-heading is needed, could finally realize the undergauge of bolt.
Summary of the invention
The present invention proposes a kind of bolt blank undergauge treatment process, and using cold extruding technique, disposable extrusion forming is completed
The processing of bolt blank undergauge, production process is simple, and cost is relatively low, and qualification rate is high, and producer's labor intensity is low.
Technical solution of the present invention:
A kind of bolt blank undergauge treatment process, it is comprised the technical steps that:
(1) digestant is configured
Industrial soap, paraffin, lime, water are mixed according to mass ratio 2.5:1:2:500, and stirred, digestant is made.
(2) bolt blank boiling
Digestant is heated to boiling, bolt blank, boiling 1-2h are added thereto.
(3) bolt blank punching press
In the molding die that well-done bolt blank is placed to impact molding machine, impact molding machine cold extrusion is disposable to squeeze
The undergauge processing of bolt blank is completed in molding.
In the way of boiling, the use of digestant in the cooperation present invention directly forms coating of wax on bolt blank surface
Film, reduces the coefficient of friction of bolt blank to greatest extent, plays good lubrication, easy to operate, side in extrusion process
Just；It provides convenience condition for final extrusion forming, to realize an extrusion forming.
Above-mentioned technical proposal is improved further and is refined, the bolt blank is column；Institute in step (3)
Stating molding die includes seaming chuck, punching press seat and lower push rod, has the punching press being inserted into for seaming chuck, lower push rod on punching press seat
Hole, seaming chuck, lower push rod are located at the two sides up and down of punching hole, face punching hole, and punching hole upper diameter is equal to bolt blank
Expect diameter, punching hole lower diameter is less than bolt blank diameter, excessive by taper slope between punching hole top and lower part；Punching press
Head moves down, and cooperatively forms extruding force with punching press seat, bolt blank is squeezed into punching hole, complete the undergauge of bolt blank, under
Mandril moves up, and the bolt blank for completing undergauge is ejected punching hole.
Above-mentioned technical proposal is improved further and is refined, the punching hole is according to the Bolt sizes specification that need to be processed
Setting.
It is an advantage of the invention that being skillfully constructed, design rationally, in the way of boiling, cooperates digestant in the present invention
It uses, directly forms coating of wax film on bolt blank surface, reduce the coefficient of friction of bolt blank to greatest extent, squeezing
Good lubrication is played in the process, it is simple, convenient；It provides convenience condition for final extrusion forming, to realize primary
Extrusion forming.
Detailed description of the invention
Fig. 1 is into mold structure diagram.
1 punching press seat of seaming chuck, 2 lower push rod, 3 punching press seat, 2 punching hole 4 in figure.
Specific embodiment
A kind of bolt blank undergauge treatment process, it is comprised the technical steps that:
(1) digestant is configured
Industrial soap, paraffin, lime, water are mixed according to mass ratio 2.5:1:2:500, and stirred, digestant is made.
(2) bolt blank boiling
Digestant is heated to boiling, bolt blank, boiling 1-2h are added thereto.
(3) bolt blank punching press
In the molding die that well-done bolt blank is placed to impact molding machine, impact molding machine cold extrusion is disposable to squeeze
The undergauge processing of bolt blank is completed in molding.
As shown, the bolt blank is column；The molding die includes seaming chuck 1, punching press in step (3)
Seat 2 and lower push rod 3 has the punching hole 4 being inserted into for seaming chuck 1, lower push rod 3, seaming chuck 1, lower push rod 3 on punching press seat 2
The two sides up and down of punching hole 4, face punching hole 4 are located at, 4 upper diameter of punching hole is equal to bolt blank diameter, punching hole 4
Lower diameter is less than bolt blank diameter, excessive by taper slope between 4 top of punching hole and lower part；Staking punch 1 moves down, with punching
Wedge 2 cooperatively forms extruding force, and bolt blank is squeezed into punching hole 4, completes the undergauge of bolt blank, and lower push rod 3 moves up,
The bolt blank for completing undergauge is ejected into punching hole 4；The punching hole 4 is set according to the Bolt sizes specification that need to be processed.
Due to the finiteness of literal expression, and objectively there is unlimited specific structure, for the common of the art
For technical staff, without departing from the principle of the present invention, can also make it is several improve, retouching or variation, can also be with
Above-mentioned technical characteristic is combined in the right way；These improve retouching, variation or combination, or not improved by invention
Conception and technical scheme directly apply to other occasions, are regarded as protection scope of the present invention.
Claims (3)
1. a kind of bolt blank undergauge treatment process, the material of the bolt blank is round steel, which is characterized in that it includes as follows
Processing step:
(1) digestant is configured
Industrial soap, paraffin, lime, water are mixed according to mass ratio 2.5:1:2:500, and stirred, digestant is made；
(2) bolt blank boiling
Digestant is heated to boiling, bolt blank, boiling 1-2h are added thereto；
(3) bolt blank punching press
In the molding die that well-done bolt blank is placed to impact molding machine, impact molding machine cold extrusion is disposable to squeeze
The undergauge processing of bolt blank is completed in molding.
2. a kind of bolt blank undergauge treatment process according to claim 1, which is characterized in that the bolt blank is column
Shape body；The molding die includes seaming chuck, punching press seat and lower push rod in step (3), has on punching press seat and is used for upper pressure
The punching hole that head, lower push rod are inserted into, seaming chuck, lower push rod are located at the two sides up and down of punching hole, face punching hole, punching hole
Upper diameter is equal to bolt blank diameter, and punching hole lower diameter is less than bolt blank diameter, between punching hole top and lower part
It is excessive by taper slope；Staking punch moves down, and cooperatively forms extruding force with punching press seat, bolt blank is squeezed into punching hole, complete
At the undergauge of bolt blank, lower push rod is moved up, and the bolt blank for completing undergauge is ejected punching hole.
3. a kind of bolt blank undergauge treatment process according to claim 2, the punching hole is according to the bolt that need to be processed
Dimensions setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910468617.9A CN110328270A (en) | 2019-05-31 | 2019-05-31 | Bolt blank undergauge treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910468617.9A CN110328270A (en) | 2019-05-31 | 2019-05-31 | Bolt blank undergauge treatment process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110328270A true CN110328270A (en) | 2019-10-15 |
Family
ID=68140710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910468617.9A Pending CN110328270A (en) | 2019-05-31 | 2019-05-31 | Bolt blank undergauge treatment process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110328270A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113275404A (en) * | 2021-03-31 | 2021-08-20 | 六安乐巴巴科技有限公司 | Automatic reducing production method for bolt machining |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2637033Y (en) * | 2003-08-20 | 2004-09-01 | 江阴市标准件二厂 | Hexagonal bolt screw stem reducing mould |
| CN202398774U (en) * | 2012-01-10 | 2012-08-29 | 上海申光高强度螺栓有限公司 | Reducing device for large-specification bolt |
| CN203235822U (en) * | 2013-03-28 | 2013-10-16 | 江苏中成紧固技术发展有限公司 | Wind power bolt reducing clamp |
| CN106312829A (en) * | 2016-10-19 | 2017-01-11 | 中铁隆昌铁路器材有限公司 | Treatment process for scale on surface of fastener raw material |
| CN107695117A (en) * | 2017-11-09 | 2018-02-16 | 中铁隆昌铁路器材有限公司 | A kind of saponification process technique for bolt class product |
-
2019
- 2019-05-31 CN CN201910468617.9A patent/CN110328270A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2637033Y (en) * | 2003-08-20 | 2004-09-01 | 江阴市标准件二厂 | Hexagonal bolt screw stem reducing mould |
| CN202398774U (en) * | 2012-01-10 | 2012-08-29 | 上海申光高强度螺栓有限公司 | Reducing device for large-specification bolt |
| CN203235822U (en) * | 2013-03-28 | 2013-10-16 | 江苏中成紧固技术发展有限公司 | Wind power bolt reducing clamp |
| CN106312829A (en) * | 2016-10-19 | 2017-01-11 | 中铁隆昌铁路器材有限公司 | Treatment process for scale on surface of fastener raw material |
| CN107695117A (en) * | 2017-11-09 | 2018-02-16 | 中铁隆昌铁路器材有限公司 | A kind of saponification process technique for bolt class product |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113275404A (en) * | 2021-03-31 | 2021-08-20 | 六安乐巴巴科技有限公司 | Automatic reducing production method for bolt machining |
| CN113275404B (en) * | 2021-03-31 | 2022-11-11 | 六安乐巴巴科技有限公司 | Automatic reducing production method for bolt machining |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191015 |