CN104525830A - Elbow expansion bolt manufacturing process - Google Patents
Elbow expansion bolt manufacturing process Download PDFInfo
- Publication number
- CN104525830A CN104525830A CN201410708488.3A CN201410708488A CN104525830A CN 104525830 A CN104525830 A CN 104525830A CN 201410708488 A CN201410708488 A CN 201410708488A CN 104525830 A CN104525830 A CN 104525830A
- Authority
- CN
- China
- Prior art keywords
- bolt
- punch die
- circular arc
- former
- cavity
- 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.)
- Granted
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Classifications
-
- 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
- B21K1/44—Making machine elements bolts, studs, or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/08—Upsetting
Abstract
The invention discloses an elbow expansion bolt manufacturing process. The elbow expansion bolt manufacturing process is characterized by comprising the following steps of 1 cutting a wire with required diameter according to the bolt length, 2 using a double-stroke cold heading machine to complete primary-punching and secondary- punching forging and pressing to head a step in the middle of a bolt; 3 using a contraction die to conduct tertiary-punching contraction and flattening on the wire with the headed step, 4 using a bending mechanism to conduct quartus punching the contracted and flattened wire to prepare an elbow. Meanwhile, the bending mechanism can prevent the bolt from having burr. The elbow expansion bolt manufacturing process is reasonable in process, efficient and safe in processing and stable and reliable in product and effectively avoids the problem that bolt burrs are produced and a workpiece is pulled out by a stamping die is effectively avoided.
Description
Technical field
The present invention relates to a kind of improvement invention of securing member manufacture craft, particularly relate to a kind of improvement invention of manufacture craft of elbow expansion bolt.
Background technology
In prior art, the elbow of bolt with one end bent back adopts inclined-plane to bend usually, but when bolt head and inclined-plane clash into, because impact is excessive and burr appears in the conference of friction exertin.And when the flat operation of the contracting preparing bolt with one end bent back; often there will be " lot " problem; refer to that workpiece is pulled out by punch die; its reason be punch die contracting flat after frictional force, be far longer than the frictional force of former to bolt, and solve lot sizing problem and can adopt scheme gauge or diameter of wire overstriking, simultaneously former undergauge; although can lot sizing problem be solved; but gauge or diameter of wire overstriking, the manufacturing cost of bolt rises, and does not calculate very much economically.
Summary of the invention
Technical problem to be solved by this invention overcomes the deficiencies in the prior art, provides that a kind of operation is simple efficient, the manufacture craft of the reliable elbow expansion bolt of product safety.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme to realize: the manufacture craft of this kind of elbow expansion bolt, is characterized in that: include following steps, step one, and the wire rod of required diameter size is carried out blank according to bolt length; Step 2, the forging and stamping wire rod double header cut being completed a punching and two punchings carry out the middle step of the good bolt of upsetting; Step 3, carries out three punching contractings by the flat mould of the wire rod of good for upsetting step contracting flat; Step 4, by flat good wire rod Clincher four punching of contracting for elbow, this Clincher can prevent bolt from occurring burr simultaneously; Wherein, three punching contractings flatly charge and attack the former of curved middle grip bolt without the need to changing with four, the double upsetting of energy, contract flat after can directly bend.
Described Clincher includes the transmission device of circular arc slide unit and the movement of transmission circular arc slide unit, the circular arc of described circular arc slide unit is provided with circular arc slide block, described circular arc slide block is provided with hinge assembly, and be hinged with slide bar, the circular arc lower end of described circular arc slide unit is provided with support, support is provided with aperture, and the described slide bar other end is removably set in aperture, and support is arranged with spring.
The transmission device that described Clincher includes mold base and is connected with mold base, described mold base front end is provided with pitman shaft, described pitman shaft is hinged with connecting rod, the described connecting rod other end is provided with gap axle, this gap and bolt head match, and gap axle is connected with gap axle back-moving spring, the gap axle back-moving spring other end is connected to mold base front lower portion, described mold base bottom is provided with opening horizontal cavity forward, pushing block is provided with in cavity, described pushing block is connected with connecting rod return spring, the described connecting rod return spring other end is connected to cavity back wall, headtree on described pushing block front end and connecting rod is in transmission connection, described mold base upper front end is provided with the dog screw of limiting rod rotational angle.
Described Clincher includes the formpiston for bending to bolt and the former for set bolt, described former is provided with bolt positioning hole, former below locating hole is provided with fork axle, fork axle is hinged with fork, bottom, described fork another port is that inclined-plane is arranged, and the upper surface of fork and threaded bolt contacts is convex arc surface; Cavity is provided with in described formpiston, cavity mouth is arranged towards former, push rod is provided with in cavity, described push rod external port is that inclined-plane is arranged, and match with the inclined-plane port of fork, be also provided with floating bracket in described cavity, described push rod is arranged with spring, spring one end connects cavity inner wall, and the spring other end connects floating bracket.
The flat mould of described contracting includes and carries out punch die and to contract flat punch die and the former of bolt, described former is provided with bolt positioning hole, described punch die is socketed with punch die cover, the pushing block of red needle and fixing red needle is provided with in described punch die cover, the front end of this red needle is placed in punch die jaws, and this jaws front end is provided with the flat step of contracting, is also provided with elastic device in described punch die cover, described elastic device one end connects punch die cover inwall, and the other end connects pushing block.
Described elastic device is three springs of socket mutually.
The invention has the beneficial effects as follows the manufacture craft of the elbow expansion bolt after improvement, adopt the flat mould of contracting improved, by arranging three springs be mutually socketed in its punch die cover, mutual support, to lead each other, increase the thrust that punch die jaws released by bolt by red needle, solve bolt easily by problem that punch die is extracted.By the Clincher improved, effectively can reduce and the impact of bolt head and frictional force, eliminate burr.And rush the former of required grip bolt without the need to changing in three punchings and four, the double upsetting of energy, contract flat after can directly bend, very convenient, remove the danger that clamp workpiece rotates from.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Fig. 1 of the present invention three rushes structural representation.
Fig. 2 is the structural representation before the embodiment of the present invention one is forged.
Fig. 3 is the structural representation after the embodiment of the present invention one is forged.
Fig. 4 is the structural representation before the embodiment of the present invention two is forged.
Fig. 5 is the structural representation after the embodiment of the present invention two is forged.
Fig. 6 is the structural representation before the embodiment of the present invention three is forged.
Fig. 7 is the structural representation after the embodiment of the present invention three is forged.
Detailed description of the invention
Drawings illustrate structure of the present invention, further illustrate its details by reference to the accompanying drawings more below.The manufacture craft of this elbow expansion bolt, includes following steps, step one, and the wire rod of required diameter size is carried out blank according to bolt length; Step 2, the forging and stamping wire rod double header cut being completed a punching and two punchings carry out the middle step of the good bolt of upsetting, and wherein double header is prior art; Step 3, adopts the flat mould of specific contracting to carry out three punching contractings flat, prevents the lot sizing problem occurred in background technology; Step 4, by flat good wire rod Clincher four punching of contracting for elbow, this Clincher can prevent bolt from occurring burr simultaneously.Wherein, three punchings and four rushs the former of required grip bolt without the need to changing, the double upsetting of energy, contract flat after can directly bend, very convenient, remove the danger that clamp workpiece rotates from.
Wherein, the flat mould that contracts includes the former 2 carrying out punch die 7 that punch die contracts flat and bolt, described former 2 is provided with bolt positioning hole 6, described punch die 7 is socketed with punch die cover 1, be provided with the pushing block 4 of red needle 3 and fixing red needle 3 in described punch die cover 1, corresponding punch die 7 jaws in front end of this red needle 3, this jaws front end is provided with the flat step of contracting, flat for carrying out contracting to bolt, namely the jaws width at step place is less than bolt width; Also be provided with elastic device 5 in described punch die cover 1, described elastic device 5 one end connects punch die and overlaps 1 inwall, and the other end connects pushing block 4; Described elastic device 5 is three springs of socket mutually.During work, bolt is placed in the locating hole 6 of former 2, bolt needs the flat one end of contracting to place towards the jaws direction of punch die 7, when punch die 7 impacts towards former 2 direction, the bolt flat end that contracts enters punch die jaws, red needle moves inward, spring 5 shrinks, and the step of punch die opening part contracts to bolt, and to carry out contracting flat for flat end, after flat completing of contracting, spring 5 resets, drive red needle 3 bolt to be reduced the staff end and release punch die 7 jaws, wherein three springs 5 be mutually socketed, help mutually, lead each other, increase the thrust to red needle 3, solve bolt easily by problem that punch die is extracted.
Wherein, Clincher has following three kinds of embodiments:
Embodiment one, described Clincher include the transmission device of circular arc slide unit 8 and the movement of transmission circular arc slide unit 8, the circular arc of described circular arc slide unit 8 is provided with circular arc slide block 9, described circular arc slide block 9 is provided with hinge assembly 10, and be hinged with slide bar 11, the circular arc lower end of described circular arc slide unit 8 is provided with support 13, support 13 is provided with aperture, and described slide bar 11 other end is removably set in aperture, and support 13 is arranged with spring 12.During work, the circular arc slide block 9 of bolt head and circular arc slide block 9 mechanism offsets, transmission device drives circular arc slide block 9 mechanism to move towards bolt head, bolt head is moved down along with the guide rail of circular arc slide block 9 along circular arc slide unit 8, and then deformation bends, slide bar 11 other end moves down in aperture simultaneously, and spring 12 shrinks, after operation of bending completes, slide block 9 and slide bar 11 are resetted by spring 12.
Embodiment two, the transmission device that described Clincher includes mold base 20 and is connected with mold base 20, described mold base 20 front end is provided with pitman shaft 17, described pitman shaft 17 is hinged with connecting rod 15, described connecting rod 15 other end is provided with gap axle 14, this gap and bolt head match, and gap axle 14 is connected with gap axle back-moving spring 19, gap axle back-moving spring 19 other end is connected to mold base 20 front lower portion, described mold base 20 bottom is provided with opening horizontal cavity forward, pushing block 21 is provided with in cavity, described pushing block 21 is connected with connecting rod return spring 18, described connecting rod return spring 18 other end is connected to cavity back wall, headtree 22 on described pushing block 21 front end and connecting rod 15 is in transmission connection, described mold base 20 upper front end is provided with the dog screw 16 of limiting rod 15 rotational angle.During work, be bolted on former, bolt head is placed in the gap of gap axle 14, push away before transmission device driven mold seat 20, connecting rod 15 rotates clockwise, and gap axle 14 rotates counterclockwise, realize bending to bolt head, after completing, connecting rod 15 is acted on by connecting rod return spring 18 and pushing block 21 and resetting, and gap axle 14 is resetted by the effect of gap axle back-moving spring 19.Because bolt head is tightly attached in the right-angle surface of gap, do not rub and relative displacement in the process that therefore bolt is bent, burr can not produce, and stable working state is reliable.
Embodiment three, described Clincher include the formpiston 27 for bending to bolt and the former 25 for set bolt, described former 25 is provided with bolt positioning hole 30, former 25 below locating hole 30 is provided with fork axle 29, fork axle 29 is hinged with fork 28, bottom, described fork 28 another port is that inclined-plane is arranged, and fork 28 is convex arc surface with the upper surface of threaded bolt contacts; Cavity is provided with in described formpiston 27, cavity mouth is arranged towards former 25, push rod 26 is provided with in cavity, described push rod 26 external port is that inclined-plane is arranged, and match with the inclined-plane port of fork 28, be also provided with floating bracket 24 in described cavity, described push rod 26 is arranged with spring 23, spring 23 one end connects cavity inner wall, and spring 23 other end connects floating bracket 24.During work, when floating bracket 24 is ejected by spring 23, fork 28 lies on the inclined-plane of push rod 26, when mechanism moves forward, then first floating bracket 24 bumps against former 25 face stops, and push rod 26 continues to move forward, its inclined-plane forces fork 28 to rotate clockwise, and is bent by bolt head from the side; Fork 28 free-falling when returning, lies down again on the inclined-plane of push rod 26, waits for next bolt.
In sum, these are only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a manufacture craft for elbow expansion bolt, is characterized in that: include following steps, step one, and the wire rod of required diameter size is carried out blank according to bolt length; Step 2, the forging and stamping wire rod double header cut being completed a punching and two punchings carry out the middle step of the good bolt of upsetting; Step 3, carries out three punching contractings by the flat mould of the wire rod of good for upsetting step contracting flat; Step 4, by flat good wire rod Clincher four punching of contracting for elbow, this Clincher can prevent bolt from occurring burr simultaneously; Wherein, three punching contractings flatly charge and attack the former of curved middle grip bolt without the need to changing with four, the double upsetting of energy, contract flat after can directly bend.
2. the manufacture craft of elbow expansion bolt as claimed in claim 1, it is characterized in that: described Clincher includes the transmission device of circular arc slide unit and the movement of transmission circular arc slide unit, the circular arc of described circular arc slide unit is provided with circular arc slide block, described circular arc slide block is provided with hinge assembly, and being hinged with slide bar, the circular arc lower end of described circular arc slide unit is provided with support, and support is provided with aperture, the described slide bar other end is removably set in aperture, and support is arranged with spring.
3. the manufacture craft of elbow expansion bolt as claimed in claim 1, it is characterized in that: the transmission device that described Clincher includes mold base and is connected with mold base, described mold base front end is provided with pitman shaft, described pitman shaft is hinged with connecting rod, the described connecting rod other end is provided with gap axle, this gap and bolt head match, and gap axle is connected with gap axle back-moving spring, the gap axle back-moving spring other end is connected to mold base front lower portion, described mold base bottom is provided with opening horizontal cavity forward, pushing block is provided with in cavity, described pushing block is connected with connecting rod return spring, the described connecting rod return spring other end is connected to cavity back wall, headtree on described pushing block front end and connecting rod is in transmission connection, described mold base upper front end is provided with the dog screw of limiting rod rotational angle.
4. the manufacture craft of elbow expansion bolt as claimed in claim 1, it is characterized in that: described Clincher includes the formpiston for bending to bolt and the former for set bolt, described former is provided with bolt positioning hole, former below locating hole is provided with fork axle, fork axle is hinged with fork, bottom, described fork another port is that inclined-plane is arranged, and the upper surface of fork and threaded bolt contacts is convex arc surface; Cavity is provided with in described formpiston, cavity mouth is arranged towards former, push rod is provided with in cavity, described push rod external port is that inclined-plane is arranged, and match with the inclined-plane port of fork, be also provided with floating bracket in described cavity, described push rod is arranged with spring, spring one end connects cavity inner wall, and the spring other end connects floating bracket.
5. the manufacture craft of elbow expansion bolt as claimed in claim 1, it is characterized in that: the flat mould of described contracting includes and carries out punch die and to contract flat punch die and the former of bolt, described former is provided with bolt positioning hole, described punch die is socketed with punch die cover, the pushing block of red needle and fixing red needle is provided with in described punch die cover, the front end of this red needle is placed in punch die jaws, this jaws front end is provided with the flat step of contracting, also elastic device is provided with in described punch die cover, described elastic device one end connects punch die cover inwall, and the other end connects pushing block.
6. the manufacture craft of elbow expansion bolt as claimed in claim 5, is characterized in that: described elastic device is three springs of socket mutually.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410708488.3A CN104525830B (en) | 2014-12-01 | 2014-12-01 | Elbow expansion bolt manufacturing process |
| CN201610578185.3A CN106180534B (en) | 2014-12-01 | 2014-12-01 | A kind of manufacture craft of elbow expansion bolt |
| CN201610578186.8A CN106001381B (en) | 2014-12-01 | 2014-12-01 | A kind of manufacture craft of elbow expansion bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410708488.3A CN104525830B (en) | 2014-12-01 | 2014-12-01 | Elbow expansion bolt manufacturing process |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610578185.3A Division CN106180534B (en) | 2014-12-01 | 2014-12-01 | A kind of manufacture craft of elbow expansion bolt |
| CN201610578186.8A Division CN106001381B (en) | 2014-12-01 | 2014-12-01 | A kind of manufacture craft of elbow expansion bolt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104525830A true CN104525830A (en) | 2015-04-22 |
| CN104525830B CN104525830B (en) | 2017-05-24 |
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Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410708488.3A Active CN104525830B (en) | 2014-12-01 | 2014-12-01 | Elbow expansion bolt manufacturing process |
| CN201610578185.3A Active CN106180534B (en) | 2014-12-01 | 2014-12-01 | A kind of manufacture craft of elbow expansion bolt |
| CN201610578186.8A Active CN106001381B (en) | 2014-12-01 | 2014-12-01 | A kind of manufacture craft of elbow expansion bolt |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610578185.3A Active CN106180534B (en) | 2014-12-01 | 2014-12-01 | A kind of manufacture craft of elbow expansion bolt |
| CN201610578186.8A Active CN106001381B (en) | 2014-12-01 | 2014-12-01 | A kind of manufacture craft of elbow expansion bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN104525830B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106040939A (en) * | 2016-07-07 | 2016-10-26 | 浙江鼎盛汽车紧固件有限公司 | Screw rod positioning and buffering cold upsetting mold |
| CN106583618A (en) * | 2016-12-05 | 2017-04-26 | 中国航空工业标准件制造有限责任公司 | Continuous trimming combined die |
| CN106607539A (en) * | 2015-10-27 | 2017-05-03 | 陕西宏远航空锻造有限责任公司 | Horizontal-forging forming method for martensitic stainless steel |
| CN108515137A (en) * | 2018-03-27 | 2018-09-11 | 宁波世裕五金电器有限公司 | A kind of manufacturing method of cold forging high-strength stainless steel setscrew |
| CN109909685A (en) * | 2019-01-24 | 2019-06-21 | 上海窗固紧固件制造有限公司 | A kind of manufacturing method of elbow screw |
| CN114888224A (en) * | 2022-04-28 | 2022-08-12 | 泰州市华驰不锈钢制品有限公司 | Cold header for steel wire hoop machine-shaping |
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| CN2260677Y (en) * | 1995-01-10 | 1997-08-27 | 陶友勤 | One-time forming mould for triming and reducing stem of screw bolt |
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- 2014-12-01 CN CN201610578186.8A patent/CN106001381B/en active Active
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| GB2234923A (en) * | 1989-05-31 | 1991-02-20 | Unifix Ltd | Anchors |
| CN2260677Y (en) * | 1995-01-10 | 1997-08-27 | 陶友勤 | One-time forming mould for triming and reducing stem of screw bolt |
| JP2006136915A (en) * | 2004-11-11 | 2006-06-01 | Toyota Motor Corp | Method for working bolt base-stock, bolt base-stock and die for working bolt base-stock |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106607539A (en) * | 2015-10-27 | 2017-05-03 | 陕西宏远航空锻造有限责任公司 | Horizontal-forging forming method for martensitic stainless steel |
| CN106040939A (en) * | 2016-07-07 | 2016-10-26 | 浙江鼎盛汽车紧固件有限公司 | Screw rod positioning and buffering cold upsetting mold |
| CN106583618A (en) * | 2016-12-05 | 2017-04-26 | 中国航空工业标准件制造有限责任公司 | Continuous trimming combined die |
| CN108515137A (en) * | 2018-03-27 | 2018-09-11 | 宁波世裕五金电器有限公司 | A kind of manufacturing method of cold forging high-strength stainless steel setscrew |
| CN109909685A (en) * | 2019-01-24 | 2019-06-21 | 上海窗固紧固件制造有限公司 | A kind of manufacturing method of elbow screw |
| CN114888224A (en) * | 2022-04-28 | 2022-08-12 | 泰州市华驰不锈钢制品有限公司 | Cold header for steel wire hoop machine-shaping |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106001381B (en) | 2017-07-28 |
| CN106180534A (en) | 2016-12-07 |
| CN104525830B (en) | 2017-05-24 |
| CN106180534B (en) | 2018-01-02 |
| CN106001381A (en) | 2016-10-12 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| CP03 | Change of name, title or address | ||
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Address after: Five Lin Industrial Zone Tangxia town Ruian city Wenzhou City, Zhejiang province 325200 field bridge Patentee after: Zhejiang Keteng Precision Machinery Co., Ltd Address before: Five Lin Cun Tangxia town Ruian city Wenzhou City, Zhejiang province 325200 field bridge Patentee before: WENZHOU KETENG FASTENER CO., LTD. |