CN114101571B - Grooving bolt and processing method and die thereof - Google Patents
Grooving bolt and processing method and die thereof Download PDFInfo
- Publication number
- CN114101571B CN114101571B CN202111458528.XA CN202111458528A CN114101571B CN 114101571 B CN114101571 B CN 114101571B CN 202111458528 A CN202111458528 A CN 202111458528A CN 114101571 B CN114101571 B CN 114101571B
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- die
- bolt
- processing
- closing
- sleeve
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- 238000003672 processing method Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 14
- 230000000712 assembly Effects 0.000 claims abstract description 12
- 238000000429 assembly Methods 0.000 claims abstract description 12
- 230000003068 static effect Effects 0.000 claims abstract description 11
- 238000003754 machining Methods 0.000 claims description 13
- 239000002994 raw material Substances 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 8
- 229910052721 tungsten Inorganic materials 0.000 claims description 8
- 239000010937 tungsten Substances 0.000 claims description 8
- 239000011162 core material Substances 0.000 description 10
- 230000009471 action Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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
- B21K1/46—Making machine elements bolts, studs, or the like with heads
- B21K1/463—Making machine elements bolts, studs, or the like with heads with recessed heads
-
- 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
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
- F16B35/041—Specially-shaped shafts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The application relates to the technical field of bolt forming, and discloses a slotted bolt, a processing method thereof and a die, wherein the slotted bolt processing die comprises a movable die and a static die, the static die comprises a lower die sleeve, a friction block and an opening and closing die are arranged in the lower die sleeve, a lower sliding block is arranged in the lower die sleeve, an inclined surface is arranged on the lower sliding block, the opening and closing die is matched with the lower sliding block through the inclined surface, the opening and closing die comprises a plurality of assemblies, the assemblies are connected through springs, a die hole is formed between the assemblies, and the inner wall of the die hole is provided with an annular bulge. The processing method of the application realizes the processing of the annular groove in the middle of the bolt by using the cold header, has high processing efficiency and low cost, and compared with the traditional processing mode by using the lathe tool, the method has the advantages of small consumption of the die, controllable quality of the finished product, less required equipment, reduced equipment cost and saved personnel and site cost.
Description
Technical Field
The application relates to the technical field of bolt forming, in particular to a slotted bolt and a processing method and a die thereof.
Background
The existing part processing procedures are divided into three procedures of cold heading, annular groove turning and thread rolling, and corresponding personnel, equipment, sites and other resources are required to be arranged for the three procedures respectively, so that the following disadvantages are caused: 1. the processing cost is high. Including personnel costs, equipment costs, floor space costs, etc.; 2. the processing efficiency is low. The procedures are complicated, the occupied resources are more, but the productivity is low; 3. the quality risk is high. The application provides a processing method for directly forming the middle annular groove at a cold heading station, which saves the cost of personnel, equipment, sites, and the like, improves the processing efficiency and reduces the occurrence risk of quality problems.
Disclosure of Invention
The application aims to provide a slotted bolt, a processing method and a die thereof, which are used for overcoming the problems in the existing bolt part processing method.
The application is realized by the following technical scheme.
The application discloses a slotting bolt processing die which comprises a movable die and a static die, wherein the static die comprises a lower die sleeve, a friction block and an opening and closing die are arranged in the lower die sleeve, a lower sliding block is arranged in the lower die sleeve, an inclined surface is arranged on the lower sliding block, the opening and closing die is matched with the lower sliding block through the inclined surface, the opening and closing die comprises a plurality of assemblies, the assemblies are connected through springs, a die hole is formed between the assemblies, and an annular bulge is formed in the inner wall of the die hole.
Further, the inclined plane between the opening and closing die and the lower die sleeve is at least divided into two sections, and the slope of each section of inclined plane is sequentially increased from inside to outside.
Further, the movable die comprises an upper die sleeve and an upper die core.
Further, a limiting block is arranged in the lower die sleeve.
Further, the assembly is provided in two.
Further, the lower die sleeve and/or the upper die sleeve is made of H13 steel.
Further, the friction block and/or the upper mold core material is KG5 tungsten steel.
A processing method of a grooving bolt comprises the following steps:
s1, chamfering, wherein a chamfer is formed at the end part of the raw material;
s2, shrinking the rod to reduce the diameter of the raw material;
s3, forming and processing a bolt head and steps of each stage;
s4, upsetting straight grooves are formed in the raw materials;
s5, die assembly is carried out, an annular groove is machined on the raw material by utilizing a die assembly die, and the die assembly die is the grooving bolt machining die;
and the steps S1-S5 are processed by using a cold header matched with different dies.
Further, the step S3 specifically includes the steps of:
s31, primarily processing steps of each level;
s32, finishing each stage of steps.
Further, the bolt head processed in the step S3 is a hexagon head.
The slotted bolt is manufactured by the slotted bolt processing method and comprises a bolt main body, wherein the bolt main body is provided with a bolt head and a straight slot, and the bolt main body is also provided with an annular slot.
The application has the beneficial effects that:
the processing method of the application realizes the processing of the annular groove in the middle of the bolt by using the cold header, has high processing efficiency and low cost, and compared with the traditional processing mode by using the lathe tool, the method has the advantages of small consumption of the die, controllable quality of the finished product, less required equipment, reduced equipment cost and saved personnel and site cost.
The slope of the inclined plane between the opening and closing die and the lower die sleeve is set to be sequentially increased from inside to outside, so that when the annular groove is machined, parts are extruded slowly, shallow grooves are machined preliminarily, the opening and closing die is matched with two parts more tightly, the opening and closing die is fast closed under the action of the inclined plane with higher subsequent slope, the annular groove is machined, machining efficiency is improved, meanwhile, the parts in the closing process are prevented from overflowing to the outside of the die cavity due to extrusion, and machining quality and success rate are guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the application, and that other drawings can be obtained from these drawings without inventive effort for a person skilled in the art.
The application will be further described with reference to the drawings and examples.
FIG. 1 shows a grooving process according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a chamfer mold structure;
FIG. 3 is a schematic view of a telescopic rod die;
FIG. 4 is a schematic view of a forming die structure;
FIG. 5 is a schematic view of a hexagonal mold structure;
FIG. 6 is a schematic diagram of a straight flute die structure;
FIG. 7 is a schematic diagram of a closed mold structure;
FIG. 8 is a schematic side view of a mold opening and closing structure;
FIG. 9 is a schematic view of the slope structure between the split mold and the lower mold sleeve;
fig. 10 is a schematic view of the structure of the mold closing mold in operation.
The left side in fig. 2 to 7 is a stationary mold, and the right side is a movable mold.
Detailed Description
The application is described in detail below with reference to fig. 1-10.
The application discloses a grooving bolt processing die, which comprises a movable die and a static die, wherein the movable die comprises an upper die sleeve 6 and an upper die core 7, the static die comprises a lower die sleeve 1, the lower die sleeve 1 is connected with a base 10, a friction block 4 and an opening and closing die 5 are arranged in the lower die sleeve 1, a lower sliding block 8 is arranged in the lower die sleeve 1, an inclined surface is arranged on the lower sliding block 8, the opening and closing die 5 comprises a plurality of assemblies 51, the opening and closing die 5 is matched with the lower sliding block 8 through the inclined surface, a limiting block 2 for limiting the sliding distance of the lower sliding block 8 is arranged on the lower die sleeve 1, the assemblies 51 are connected through springs 52, a die hole 53 is formed between the assemblies 51, an annular protrusion 54 is formed in the inner wall of the die hole 53, an elastic component 3 is arranged in the lower die sleeve 1, the elastic component 3 is connected with the lower sliding block 8, and a nitrogen spring is arranged in the lower die sleeve 1.
The part is installed into a six-sequence static die cavity through a passing clamp, at the moment, the state of the die opening and closing 5 is in a non-processing state, as shown in figure 8, then the movable die is started to extrude towards the static die direction, the lower sliding block 8 and the die opening and closing 5 move inwards towards the lower die sleeve 1, the lower sliding block 8 is slower than the die opening and closing 5 under the action of the friction block 4 and the limiting block 2, so that the die opening and closing 5 and the lower sliding block 8 slide relatively and are gradually closed under the action of a die inclined plane, an annular groove is processed on the part, after the processing is finished, the movable die returns, the die opening and closing 5 is automatically opened after being extruded under the spring tension, and the lower sliding block 8 and the die opening and closing 5 are reset and returned under the action of the elastic component 3.
Further, the inclined plane between the die opening and closing 5 and the lower slide 8 is at least divided into two sections, the slope of each section of inclined plane is sequentially increased from inside to outside, as shown in fig. 9, the inclined planes are the inclined plane of the die opening and closing 5 and the inclined plane on the slide 8 respectively, and the slopes of the two inclined planes are the inner section inclined planes and are smaller than the outer section inclined planes, so that the effect that the die closing speed is changed from slow to fast when the die opening and closing 5 moves inwards is achieved, parts are extruded slowly when annular grooves are machined, shallow grooves are machined preliminarily, the die opening and closing 5 is matched with the two parts more tightly, the die opening and closing 5 is fast closed under the action of the inclined planes with higher subsequent inclined planes, the annular grooves are machined, and therefore machining efficiency is improved, parts are prevented from overflowing to the outside of the die cavity due to extrusion in the die closing process, and machining quality and success rate are guaranteed.
Alternatively, both slopes are slopes with constant slope.
Further, the assembly 51 is provided in two.
Further, the material of the lower die sleeve 1 and/or the upper die sleeve 6 is H13 steel, and the material of the friction block 4 and/or the upper die core 7 is KG5 tungsten steel.
A grooving bolt processing method includes the steps that a feeding mechanism sends wires into a cold header at a fixed speed to be cut off, then parts are sequentially placed into fixed cold header dies through a passing clamp to be subjected to cold header forming, each die set comprises a pair of movable dies and a pair of static dies, and each pair of dies comprises a die core and a die sleeve.
As in fig. 1, the method comprises the following steps:
s1, chamfering, wherein a chamfer is formed at the end part of the raw material, a chamfering die as shown in figure 2 is used, a die sleeve is made of H13, and a die core is made of tungsten steel SKD61
S2, shrinking the rod to reduce the diameter of the raw material, wherein a rod shrinking die shown in FIG. 3 is used, a die sleeve is made of H13, and a die core is made of tungsten steel SKD61.
S3, forming, namely machining the bolt head and each step, using a forming die and a hexagonal shrinking die as shown in fig. 4 and 5, using H13 as a die sleeve, using tungsten steel SKD61 as a die core, firstly, using the die in fig. 4 to initially machine each step, and then using the die in fig. 5 to further finish the rest steps and simultaneously machine the hexagonal bolt head.
S4, upsetting grooves, namely using a upsetting groove die in FIG. 6, using H13 as a die sleeve, using tungsten steel SKD61 as a die core, and processing two mutually symmetrical straight grooves on the raw material;
and S5, closing the mold, namely using the mold for machining the grooving bolts in FIG. 7, wherein the mold sleeve material is H13, the mold core material is KG5 tungsten steel, and machining the annular groove on the raw material by using the mold for closing the mold.
By the method, the machining of the annular groove in the middle of the bolt by using the cold header is realized, the machining efficiency is high, the cost is low, compared with the traditional mode of machining by using a lathe tool, the consumption of the die is small, the quality of a finished product is controllable, required equipment is few, the equipment cost is reduced, and meanwhile, the personnel and site cost is saved.
A slotted bolt is shown in fig. 1, and comprises a bolt body, wherein the bolt body is provided with a bolt head 91 and straight grooves 92, the straight grooves 92 are symmetrically distributed in the circumferential direction of the bolt body, the bolt body is also provided with annular grooves 93, and the bolt body is provided with threads.
The above embodiments are only for illustrating the technical concept and features of the present application, and are intended to enable those skilled in the art to understand the present application and implement it without limiting the scope of the present application. All equivalent changes or modifications made in accordance with the spirit of the present application should be construed to be included in the scope of the present application.
Claims (9)
1. The utility model provides a slotting bolt mold processing which characterized in that: the die comprises a movable die and a static die, wherein the static die comprises a lower die sleeve (1), a friction block (4) and an opening and closing die (5) are arranged in the lower die sleeve (1), a lower sliding block (8) is arranged in the lower die sleeve (1), an inclined surface is arranged on the lower sliding block (8), the opening and closing die (5) is matched with the lower sliding block (8) through the inclined surface, the opening and closing die (5) comprises a plurality of assemblies (51), the assemblies (51) are connected through springs (52), a die hole (53) is formed between the assemblies (51), and annular protrusions (54) are formed on the inner wall of the die hole (53); the inclined plane between the opening and closing die (5) and the lower die sleeve (1) is at least divided into two sections, and the slope of each section of inclined plane is sequentially increased from inside to outside.
2. The grooving bolt processing mold according to claim 1, wherein: the movable die comprises an upper die sleeve (6) and an upper die core (7).
3. The grooving bolt processing mold according to claim 2, wherein: a limiting block (2) is arranged in the lower die sleeve (1).
4. A grooving bolt processing die according to claim 3, wherein: the assembly (51) is provided with two.
5. The grooving bolt processing mold according to claim 4, wherein: the lower die sleeve (1) and/or the upper die sleeve (6) are made of H13 steel.
6. The grooving bolt processing mold according to claim 5, wherein: and the friction block (4) and/or the upper mold core (7) are/is made of KG5 tungsten steel.
7. A processing method of a grooving bolt is characterized by comprising the following steps: the method comprises the following steps:
s1, chamfering, wherein a chamfer is formed at the end part of the raw material;
s2, shrinking the rod to reduce the diameter of the raw material;
s3, forming and processing a bolt head and steps of each stage;
s4, upsetting straight grooves are formed in the raw materials;
s5, closing the die, and processing an annular groove on the raw material by using a die-closing die, wherein the die-closing die is a grooving bolt processing die according to any one of claims 1-6;
and the steps S1-S5 are processed by using a cold header matched with different dies.
8. The method for machining the grooving bolt according to claim 7, wherein: the step S3 comprises the following specific steps:
s31, primarily processing steps of each level;
s32, finishing each stage of steps.
9. A slotted bolt, characterized in that: the slotted bolt machining method of any one of claims 7-8, comprising a bolt body, wherein the bolt body is provided with a bolt head (91) and a straight slot (92), and the bolt body is further provided with an annular slot (93).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111458528.XA CN114101571B (en) | 2021-12-01 | 2021-12-01 | Grooving bolt and processing method and die thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111458528.XA CN114101571B (en) | 2021-12-01 | 2021-12-01 | Grooving bolt and processing method and die thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114101571A CN114101571A (en) | 2022-03-01 |
| CN114101571B true CN114101571B (en) | 2023-08-18 |
Family
ID=80366169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111458528.XA Active CN114101571B (en) | 2021-12-01 | 2021-12-01 | Grooving bolt and processing method and die thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114101571B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114776687B (en) * | 2022-04-22 | 2024-04-16 | 江苏永昊高强度螺栓有限公司 | Anti-loosening bolt and nut structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000145741A (en) * | 1998-11-12 | 2000-05-26 | Sugiura Seisakusho:Kk | Male screw member and its manufacture |
| CN203292319U (en) * | 2013-06-04 | 2013-11-20 | 日泰（上海）汽车标准件有限公司 | Die used for machining hexagonal flange slotting bolt |
| CN208133571U (en) * | 2018-04-03 | 2018-11-23 | 长飞光纤光缆沈阳有限公司 | A kind of Novel optical cable sheath extruded mould |
| CN208495684U (en) * | 2018-07-24 | 2019-02-15 | 浙江裕泰汽车配件有限公司 | Eccentric bolt Combined mold for processing |
| CN110732618A (en) * | 2019-12-02 | 2020-01-31 | 丽水吉德实业有限公司 | Die for upsetting hexagon flange bolt |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008038185B3 (en) * | 2008-08-19 | 2010-01-28 | Sieber Forming Solutions Gmbh | Method and device for the production of fastening or connecting means with radial outer contours, in particular screws or threaded bolts |
-
2021
- 2021-12-01 CN CN202111458528.XA patent/CN114101571B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000145741A (en) * | 1998-11-12 | 2000-05-26 | Sugiura Seisakusho:Kk | Male screw member and its manufacture |
| CN203292319U (en) * | 2013-06-04 | 2013-11-20 | 日泰（上海）汽车标准件有限公司 | Die used for machining hexagonal flange slotting bolt |
| CN208133571U (en) * | 2018-04-03 | 2018-11-23 | 长飞光纤光缆沈阳有限公司 | A kind of Novel optical cable sheath extruded mould |
| CN208495684U (en) * | 2018-07-24 | 2019-02-15 | 浙江裕泰汽车配件有限公司 | Eccentric bolt Combined mold for processing |
| CN110732618A (en) * | 2019-12-02 | 2020-01-31 | 丽水吉德实业有限公司 | Die for upsetting hexagon flange bolt |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114101571A (en) | 2022-03-01 |
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