CN113231531B - Impact-resistant deburring type bolt trimming die - Google Patents
Impact-resistant deburring type bolt trimming die Download PDFInfo
- Publication number
- CN113231531B CN113231531B CN202110618651.7A CN202110618651A CN113231531B CN 113231531 B CN113231531 B CN 113231531B CN 202110618651 A CN202110618651 A CN 202110618651A CN 113231531 B CN113231531 B CN 113231531B
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- Prior art keywords
- die
- bolt
- trimming
- impact
- lower die
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Classifications
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- 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
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
- B21D28/14—Dies
-
- 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
- B21D53/24—Making other particular articles nuts or like thread-engaging members
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Punching Or Piercing (AREA)
- Forging (AREA)
- Milling, Broaching, Filing, Reaming, And Others (AREA)
Abstract
The invention relates to an impact-resistant deburring type bolt trimming die, which relates to the technical field of dies and comprises an upper die and a lower die, wherein a die hole for accommodating a screw rod of a bolt is formed in the lower die, a push rod is arranged at the lower part of the die hole, a trimming die is embedded at the bottom end of the upper die, a cutting assembly for deburring the bolt is sleeved in the lower die, and a buffer piece is embedded at the top of the lower die around the outer ring of the die hole. The die is high in adaptability, flexible to use, good in operation and good in impact resistance, the risk of breakage of the bolt in the trimming process can be effectively avoided, the structural integrity of the bolt is guaranteed, burrs generated during trimming of the bolt can be effectively removed, additional treatment is not needed, and the workload is reduced.
Description
Technical Field
The invention belongs to the technical field of dies, and particularly relates to an impact-resistant deburring type bolt trimming die.
Background
After the blank is manufactured through cold heading, the blank is required to be subjected to trimming treatment by using a trimming die, so that high-quality bolt heads can be obtained, the existing bolt trimming die comprises a lower die and a trimming die, a screw is inserted into a die hole of the lower die, a supporting surface at the bottom of the square bolt head is supported by the top surface of the lower die, after the trimming die punches down, redundant parts of the bolt head are cut off to form regular polygonal heads, and then a push rod pushes upwards from the bottom of the die hole to demould the bolt.
The defect of current mould is that the screw rod directly inserts in the nib of lower mould, and the stamping pressure of cut off die causes the screw rod fracture or the crackle appears of bolt easily when too big, influences the original structure of bolt, and in addition, current mould easily leaves the deckle edge after to the bolt side cut, needs extra processing, has increased work load.
Disclosure of Invention
The invention aims to solve the problems and provide the impact-resistant deburring type bolt trimming die which is simple in structure and reasonable in design.
The invention realizes the above purpose through the following technical scheme:
the utility model provides an impact-resistant burr-removing bolt side cut mould, includes mould and lower mould, set up the nib of holding the screw rod of bolt in the lower mould, the lower part of nib is equipped with the ejector pin, go up the die bottom and inlay and be equipped with the trimming die, the lower mould endotheca has the cutting element that is used for the bolt burr-removing, the lower mould top is inlayed around the outer lane of nib and is equipped with the bolster.
As a further optimization scheme of the invention, the cutting assembly comprises a gear sleeved outside the lower die, a cutting cylinder arranged in the lower die and connected with the gear in a shaft way, and an inclined conical cutter surface arranged on the periphery of the top end of the cutting cylinder, wherein the upper end of the cutting cylinder is higher than the outer surface of the top of the lower die, and the outer diameter of the cutting cylinder is consistent with the outer diameter of the trimming die.
As a further optimization scheme of the invention, the buffer piece comprises a rubber seat which is embedded at the top of the lower die and surrounds the die hole, a sliding sleeve is arranged in the rubber seat, the buffer seat is inserted and matched in the sliding sleeve, and the head of the bolt is lapped on the upper surface of the buffer seat.
As a further optimization scheme of the invention, the number of edges of the trimming die is consistent with the number of trimming edges of bolts of different types.
As a further optimization scheme of the invention, a stepped hole for placing the trimming die is formed in the upper die, and the bottom of the trimming die is leveled with the lower end of the stepped hole.
As a further optimization scheme of the invention, the top of the upper die is hinged with a mounting cover plate, the inner side wall of the mounting cover plate is provided with a fastener which is abutted against the trimming die, and the top of the fastener is clamped with an arc-shaped plate which is connected with the inner side wall of the mounting cover plate.
As a further optimization scheme of the invention, mounting holes are formed in four corners of the periphery of the mounting cover plate, and buckles which are buckled with the upper die are arranged on the outer side of the mounting cover plate.
A bolt trimming processing method is characterized by comprising the following steps,
s1, inserting a screw rod of a bolt blank into a die hole of a lower die, placing the head of the bolt blank on a buffer piece at the top of the lower die, and selecting a trimming die corresponding to the required requirement to install the trimming die in an upper die;
s2, driving the upper die to press the head of the bolt downwards by using stamping equipment, and finishing trimming the head of the bolt by using a trimming die;
s3, driving the cutting assembly to rotate by using a power source to cut burrs cut by the cutting die from the head of the bolt, and finishing a deburring process;
s4, driving the ejector rod by using a power source to eject the screw rod of the bolt out of the die hole, and thus demoulding is completed.
The invention has the beneficial effects that:
1) According to the invention, in the punching and trimming process, the head of the bolt is contacted with the buffer ring positioned at the top of the lower die, the buffer piece is extruded and deformed to generate buffer stress, the impact of the head of the bolt and the die hole of the lower die is slowed down, the impact on the structure of the bolt is reduced, the risk of breakage of the bolt in the trimming process is prevented, the structural integrity of the bolt is ensured, meanwhile, the cut burrs are cut off under the action of the bevel cutting component in the punching process, the burr removing effect is achieved, additional treatment is not needed, and the workload is reduced.
2) According to the invention, the structural design that the top of the upper die is hinged with the mounting cover plate enables the disassembly and assembly of the trimming die to be more convenient and flexible, so that the trimming die is more convenient to operate when being replaced according to bolts of different types, the suitability of the die is greatly improved, the cost is reduced, and the practicability is greatly improved.
Drawings
FIG. 1 is a schematic view of the overall structure provided by the present invention;
FIG. 2 is a cross-sectional view provided by the present invention;
FIG. 3 is a perspective view of the deburring assembly of the present invention;
FIG. 4 is a perspective view of a mounting cover plate provided by the invention;
FIG. 5 is a perspective view of a trimming die provided by the present invention;
FIG. 6 is a perspective view of a fastener provided by the present invention;
in the figure: 1. an upper die; 2. a lower die; 3. a push rod; 4. trimming die; 5. a cutting assembly; 51. a cutting cylinder; 52. a gear; 53. a beveled conical knife surface; 6. a buffer member; 61. a rubber seat; 62. a buffer seat; 63. a sliding sleeve; 7. installing a cover plate; 8. a mounting hole; 9. a buckle; 10. an arc-shaped plate; 11. a fastener.
Detailed Description
The following detailed description of the present application is provided in conjunction with the accompanying drawings, and it is to be understood that the following detailed description is merely illustrative of the application and is not to be construed as limiting the scope of the application, since numerous insubstantial modifications and adaptations of the application will be to those skilled in the art in light of the foregoing disclosure.
In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention; in the description of the present invention, unless otherwise indicated, the meaning of "a plurality", "a number" or "a plurality" is two or more.
Example 1
As shown in figures 1-3, the impact-resistant deburring type bolt trimming die comprises an upper die 1 and a lower die 2, a die hole for accommodating a screw rod of a bolt is formed in the lower die 2, a push rod 3 is arranged at the lower part of the die hole, trimming dies 4 are embedded at the bottom end of the upper die 1, the number of edges of the trimming dies 4 is consistent with the trimming number of bolts of different types, the operation is more convenient when the bolts of different types are replaced, the suitability of the die is greatly improved, the cost is reduced, the practicability is greatly improved, a cutting assembly 5 for deburring the bolts is sleeved in the lower die 2, and a buffer member 6 is embedded at the top of the lower die 2 around the outer ring of the die hole.
The cutting assembly 5 comprises a gear 52 sleeved outside the lower die 2, a cutting cylinder 51 arranged in the lower die 2 and connected with the gear 52 in a shaft way, and an inclined conical cutter surface 53 arranged on the periphery of the top end of the cutting cylinder 51, wherein the upper end of the cutting cylinder 51 is higher than the outer surface of the top of the lower die 2, and the outer diameter of the cutting cylinder 51 is consistent with the outer diameter of the trimming die 4;
the buffer piece 6 comprises a rubber seat 61 embedded at the position around a die hole at the top of the lower die 2, a sliding sleeve 63 is arranged in the rubber seat 61, a buffer seat 62 is inserted and matched in the sliding sleeve 63, and the head of a bolt is lapped on the upper surface of the buffer seat 62;
when the die is used, after a screw rod of a bolt blank is inserted into a die hole of a lower die 2, a required trimming die 4 is selected and arranged in an upper die 1, meanwhile, the upper die 1 is connected with a stamping device, the stamping device drives the upper die 1 and the trimming die 4 in the upper die to punch down, the trimming die 4 cuts off redundant parts of the head of a bolt, the trimming die 4 performs trimming treatment on the head of the bolt and simultaneously generates downward impact on the bolt blank, a buffer seat 62 is pressed down by the head of the bolt to enable the buffer seat 62 and a rubber seat 61 to slide relatively until the buffer seat 62 contacts the rubber seat 61, the rubber seat 61 is subjected to extrusion deformation to generate buffer stress, the impact on the screw rod structure of the bolt blank is reduced by the impact on the top ends of the die holes of the bolt head and the lower die 2, so that the risk of breaking the screw rod of the bolt blank and the head of the bolt in the trimming process is prevented, and the structural integrity of the bolt is ensured;
in addition, the trimming die 4 moves downwards and brings burrs cut from the head of the bolt to the cutting assembly 5 at the top of the lower die 2, the power source driving gear 52 rotates to drive the cutting cylinder 51 to synchronously rotate, when the trimming die 4 contacts with the inclined conical cutter surface 53 at the top of the cutting cylinder 51, the burrs are cut by the cutting action of the cutting cylinder 51 and the shearing force at the top of the inclined conical cutter surface 53 in the stamping process, the cut burrs slide from the outer part of the inclined conical cutter surface 53 and do not fall into the die structure, the normal use of the die is ensured, and finally, after trimming is finished, the ejector rod 3 ejects the screw rod of the bolt out of the die hole.
The die has good impact resistance effect when carrying out trimming treatment on the bolt, can effectively cut burrs left by trimming treatment, reduces extra workload, ensures processing quality and has good application prospect.
As shown in fig. 4-6, a stepped hole for placing the trimming die 4 is formed in the upper die 1, the bottom of the trimming die 4 is flat with the lower end of the stepped hole, the top of the upper die 1 is hinged with a mounting cover plate 7, the inner side wall of the mounting cover plate 7 is provided with a fastener 11 which is abutted against the trimming die 4, the top of the fastener 11 is clamped with an arc-shaped plate 10 connected with the inner side wall of the mounting cover plate 7, the four corners of the periphery of the mounting cover plate 7 are provided with mounting holes 8, and the outer side of the mounting cover plate 7 is provided with a buckle 9 which is buckled with the upper die 1.
The installation apron 7 hinged at the top of the upper die 1 is used for installing the installation apron 7 on punching equipment through installing pieces such as fastening bolts, then, when the bolts with different types are subjected to trimming treatment, the corresponding trimming die 4 is selected and installed in the stepped hole of the upper die 1, after the buckle 9 corresponding to the installation apron 7 of the upper die 1 is buckled and installed, the fastener 11 on the inner side wall of the installation apron 7 extrudes the trimming die 4 to generate the abutting fixing effect, the trimming operation can be performed, the structural design of the upper die 1 enables the dismounting of the trimming die 4 to be more convenient and flexible, the operation is more convenient when the trimming die 4 is replaced according to the bolts with different types, the suitability of the die is greatly improved, the cost is reduced, and the practicability is greatly improved.
A bolt trimming processing method is characterized by comprising the following steps,
s1, inserting a screw rod of a bolt blank into a die hole of a lower die 2, placing the head of the bolt blank on a buffer piece 6 at the top of the lower die 2, and selecting a trimming die 4 corresponding to the required requirement to install the trimming die in an upper die 1;
s2, after the stamping equipment is used for driving the upper die 1 to press the head of the bolt downwards, finishing the trimming treatment of the head of the bolt by the trimming die 4;
s3, driving the cutting assembly 5 to rotate by using a power source to cut burrs cut by the cutting die 4 from the head of the bolt, and finishing a deburring process;
s4, driving the ejector rod 3 to eject the screw rod of the bolt out of the die hole by using a power source, and completing demoulding.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention.
Claims (6)
1. The utility model provides an impact-resistant burr-removing bolt trimming die, includes upper die (1) and lower die (2), set up the nib of the screw rod that holds the bolt in lower die (2), the lower part of nib is equipped with ejector pin (3), its characterized in that, upper die (1) bottom inlays and is equipped with trimming die (4), lower die (2) endotheca is equipped with cutting element (5) that are used for the bolt burr-removing, the outer lane that the lower die (2) top was around the nib inlays and is equipped with bolster (6);
the cutting assembly (5) comprises a gear (52) sleeved outside the lower die (2), a cutting cylinder (51) arranged in the lower die (2) and connected with the gear (52) in a shaft way, and an inclined conical cutter surface (53) arranged on the periphery of the top end of the cutting cylinder (51), wherein the upper end of the cutting cylinder (51) is higher than the outer surface of the top of the lower die (2), and the outer diameter of the cutting cylinder (51) is consistent with the outer diameter of the trimming die (4);
the buffer piece (6) comprises a rubber seat (61) which is embedded at the top of the lower die (2) and surrounds the die hole, a sliding sleeve (63) is arranged in the rubber seat (61), a buffer seat (62) is inserted and matched in the sliding sleeve (63), and the head of the bolt is lapped on the upper surface of the buffer seat (62).
2. The impact-resistant deburring bolt trimming die set forth in claim 1, wherein: the number of edges of the trimming die (4) is consistent with the number of required trimming edges of bolts of different types.
3. The impact-resistant deburring bolt trimming die set forth in claim 1, wherein: the upper die (1) is internally provided with a stepped hole for placing the trimming die (4), and the bottom of the trimming die (4) is leveled with the lower end of the stepped hole.
4. The impact-resistant deburring bolt trimming die set forth in claim 1, wherein: the top of last mould (1) articulates there is installation apron (7), the inside wall of installation apron (7) is equipped with fastener (11) with cut off die (4) looks butt, the top joint of fastener (11) has arc (10) that are connected with the inside wall of installation apron (7).
5. The impact-resistant deburring bolt trimming die set forth in claim 4, wherein: the four corners of the periphery of the mounting cover plate (7) are provided with mounting holes (8), and the outer side of the mounting cover plate (7) is provided with buckles (9) which are buckled with the upper die (1).
6. A method for trimming a bolt using the bolt trimming die according to any one of claims 1 to 5, characterized by comprising the steps of,
s1, inserting a screw rod of a bolt blank into a die hole of a lower die (2), placing the head of the bolt blank on a buffer (6) at the top of the lower die (2), and selecting a trimming die (4) corresponding to the requirement to install the trimming die in an upper die (1);
s2, after the stamping equipment is used for driving the upper die (1) to press the head of the bolt downwards, finishing the trimming treatment of the head of the bolt by the trimming die (4);
s3, driving the cutting assembly (5) to rotate by using a power source to cut burrs cut by the cutting die (4) from the head of the bolt, and finishing a deburring process;
s4, driving the ejector rod (3) by using a power source to eject the screw rod of the bolt out of the die hole, and thus demoulding is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110618651.7A CN113231531B (en) | 2021-06-03 | 2021-06-03 | Impact-resistant deburring type bolt trimming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110618651.7A CN113231531B (en) | 2021-06-03 | 2021-06-03 | Impact-resistant deburring type bolt trimming die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113231531A CN113231531A (en) | 2021-08-10 |
| CN113231531B true CN113231531B (en) | 2023-07-28 |
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ID=77136676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110618651.7A Active CN113231531B (en) | 2021-06-03 | 2021-06-03 | Impact-resistant deburring type bolt trimming die |
Country Status (1)
| Country | Link |
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| CN (1) | CN113231531B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3135410U (en) * | 2007-07-04 | 2007-09-13 | Ｍｔｒトレイド株式会社 | Deburring device for large gears |
| JP2015174113A (en) * | 2014-03-14 | 2015-10-05 | 三菱自動車工業株式会社 | Press device |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203804013U (en) * | 2014-04-25 | 2014-09-03 | 江西新裕隆汽车零部件有限公司 | Forged-piece blank edge-trimming returning device |
| CN105772830A (en) * | 2014-12-23 | 2016-07-20 | 天津市骏通标准件有限公司 | Novel bolt edge cutting machine |
| CN204449165U (en) * | 2014-12-24 | 2015-07-08 | 舟山市7412工厂 | Part head cold-heading trimming processing mold |
| CN105750395A (en) * | 2016-04-08 | 2016-07-13 | 中信戴卡股份有限公司 | Improved trimming die for forging wheels |
| CN209036813U (en) * | 2018-09-13 | 2019-06-28 | 重庆瑞光汽车配件有限公司 | A kind of mold trimming device |
| CN109940077A (en) * | 2019-03-19 | 2019-06-28 | 长兴旗开机械设备有限公司 | A kind of high velocity ram machine of the automobile parts production with buffer unit |
| CN210059486U (en) * | 2019-04-25 | 2020-02-14 | 浙江科硕紧固件有限公司 | Cold-heading bolt rod part bending-prevention die |
| CN210059485U (en) * | 2019-04-25 | 2020-02-14 | 浙江科硕紧固件有限公司 | Square bolt burr-free trimming die |
| CN210847883U (en) * | 2019-10-20 | 2020-06-26 | 金业 | Novel no burr aluminum alloy foundry goods side cut mould |
| CN211805270U (en) * | 2020-03-24 | 2020-10-30 | 东北林业大学 | Deburring device of high-speed rail brake disc |
| CN112605230A (en) * | 2020-11-26 | 2021-04-06 | 安庆牛力模具股份有限公司 | Trimming die for bolt |
| CN112676434A (en) * | 2021-01-26 | 2021-04-20 | 东风汽车紧固件有限公司 | Burr mould is cut to bolt no burr |
-
2021
- 2021-06-03 CN CN202110618651.7A patent/CN113231531B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3135410U (en) * | 2007-07-04 | 2007-09-13 | Ｍｔｒトレイド株式会社 | Deburring device for large gears |
| JP2015174113A (en) * | 2014-03-14 | 2015-10-05 | 三菱自動車工業株式会社 | Press device |
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| Publication number | Publication date |
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| CN113231531A (en) | 2021-08-10 |
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