CN110355531B - Processing technology of ring groove rivet - Google Patents
Processing technology of ring groove rivet Download PDFInfo
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- CN110355531B CN110355531B CN201910675482.3A CN201910675482A CN110355531B CN 110355531 B CN110355531 B CN 110355531B CN 201910675482 A CN201910675482 A CN 201910675482A CN 110355531 B CN110355531 B CN 110355531B
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- 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
Abstract
The invention discloses a processing technology of a ring groove rivet, which is characterized by comprising the following steps: step S1, upsetting the rivet material into a rivet blank with a head and a rod diameter; step S2, grinding the rod diameter of the rivet blank to form a large-diameter section and a small-diameter section of the rivet blank along the rod diameter from one end of the head of the rivet blank; step S3, under the condition that the rivet blank is not heated, a thread rolling machine is adopted to thread a section of the small-diameter section of the rod diameter far away from the head to form a clamping section annular groove; and step S4, turning a section of the small-diameter section of the rod diameter close to the head by using a lathe to form a working section annular groove, and turning the small-diameter section between the clamping section annular groove and the working section annular groove to form a fracture groove, so that a finished rivet is formed. The invention improves the production efficiency, reduces the processing cost and reduces the defective products of the products.
Description
Technical Field
The invention relates to the technical field of rivet processing, in particular to a processing technology of a ring groove rivet.
Background
The ring groove rivet and nail sleeve matching piece is convenient to operate, high in assembling efficiency, good in shock resistance and wide in application in the aerospace field. The rivet is provided with a working section annular groove, a rupture groove and a clamping section annular groove, when in riveting, the rivet is firstly inserted into a rivet hole of a connected piece, then the rivet sleeve is sleeved on the working section annular groove of the rivet from the other side of the connected piece, then a muzzle of a pneumatic annular groove rivet gun is sleeved on the clamping section annular groove of the rivet, the muzzle is propped against the end face of the rivet sleeve, then a trigger on the gun is pulled, the rivet gun is about to strain a nail rod of the clamping section annular groove of the rivet until the rivet is broken from the rupture groove, at the moment, the inner wall of the rivet sleeve is extruded into the working section annular groove of the rivet to form a new rivet head, and the connected piece is riveted.
The conventional processing methods for the ring groove rivet mainly comprise two methods: one of the methods is to turn the working section ring groove, the fracture groove and the clamping section ring groove at one time by using a lathe machining method, and the method not only has long machining time and low production efficiency due to the integral use of turning machining, but also has extremely worn cutters and high machining cost; the other method is to process a working section ring groove and a clamping section ring groove on a working section and a clamping section of the rivet in a rolling mode, and a fracture groove is processed between the working section and the clamping section of the rivet through turning.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a processing technology of a ring groove rivet, which aims to improve the production efficiency, reduce the processing cost and reduce the defective products of products.
The invention provides a processing technology of a ring groove rivet, which comprises the following steps:
step S1, upsetting the rivet material into a rivet blank with a head and a rod diameter;
step S2, grinding the rod diameter of the rivet blank to form a large-diameter section and a small-diameter section of the rivet blank along the rod diameter from one end of the head of the rivet blank;
step S3, under the condition that the rivet blank is not heated, a thread rolling machine is adopted to thread a section of the small-diameter section of the rod diameter far away from the head to form a clamping section annular groove;
and step S4, turning a section of the small-diameter section of the rod diameter close to the head by using a lathe to form a working section annular groove, and turning the small-diameter section between the clamping section annular groove and the working section annular groove to form a fracture groove, so that a finished rivet is formed.
Further, in the step S1, the upsetting temperature of the rivet material is 600-650 degrees.
Further, in the step S4, the lathe has a rotating clamping member, a clamping segment ring groove turning tool and a breaking groove turning tool, and during turning, the rivet blank is fixed on the rotating clamping member, and then the clamping segment ring groove turning tool and the breaking groove turning tool are controlled to perform turning respectively.
Further, the following steps are also included between the step S1 and the step S2:
further, putting the upset rivet blank into a corresponding cleaning line and a pickling line for cleaning;
and step A2, performing heat treatment on the cleaned rivet blank.
Further, in the step a2, the heat treatment specifically includes: and carrying out solution heat preservation treatment on the cleaned rivet blank in a vacuum water quenching furnace, wherein the temperature of the solution heat treatment is 850-900 ℃, and then carrying out aging treatment on the rivet blank after the solution heat treatment in a vacuum aging furnace, wherein the temperature of the aging treatment is 500-600 ℃.
Further, the step S4 is followed by the following steps:
step S5, flaw detection is carried out on the finished rivet by utilizing a DNT flaw detector;
step S6, cleaning, spraying and drying the surface of the finished rivet;
and step S7, carrying out corresponding detection and packaging on the finished rivets.
Further, the rivet is made of a titanium alloy material.
The invention has the beneficial effects that: the rivet can not be heated when being twisted, otherwise, the strength and the rigidity of the rivet can be influenced, but under the condition of no heating, the groove depth of the thread rolling is difficult to control by a thread rolling machine, the working section annular groove of the rivet is used for being combined with a nail sleeve, and the fracture groove of the rivet is used for controlling the fracture of the rivet, so that the requirements of the working section annular groove and the fracture groove on the processing precision are higher, the working section annular groove and the fracture groove are formed by turning to ensure the processing precision of the working section annular groove and the fracture groove, the clamping section annular groove is used for being combined with a rivet gun when being riveted, the requirements of the clamping section annular groove on the processing precision are lower, and the clamping section annular groove can meet the requirements through thread rolling. Therefore, compared with the prior art, the rod diameter of the rivet blank is ground into the large-diameter section and the small-diameter section, the clamping section annular groove is formed on the small-diameter section through thread rolling, and the working section annular groove and the fracture groove are formed through turning, so that the production efficiency is improved, the processing cost is reduced, defective products of products are reduced, and the production efficiency and the quality of the products are guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments will be briefly described below. Throughout the drawings, similar devices or portions are generally identified by similar reference numerals. In the drawings, the various devices or portions are not necessarily drawn to scale.
FIG. 1 is a schematic structural view of a ring groove rivet according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a ground rivet blank according to an embodiment of the present invention;
FIG. 3 is a flow chart of a manufacturing process of a ring groove rivet according to an embodiment of the present invention.
In the drawings, 1 denotes a head; 2 denotes the rod diameter; 21 denotes a large diameter section; 22, a minor-diameter section; 3 denotes a clamping segment ring groove; 4 represents a working section ring groove; and 5 denotes a rupture groove.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the patent is not limited thereby.
As shown in fig. 1 to 3, an embodiment of the present invention provides a processing technology of a ring groove rivet, including the following steps:
and step S1, upsetting the rivet material at one time to form a rivet blank with a head 1 and a rod diameter 2, wherein the rivet material can be a titanium alloy material. In the upsetting process, the shape, the length and the rod diameter 2 of the head 1 of the rivet blank can be formed at one time, so that the continuity of the internal grain structure of the product is ensured. The upsetting temperature of the rivet material is 600-650 ℃, the product can generate an over-burning phenomenon when the temperature is too high, and the product can generate cracks when the temperature is low.
And step A1, putting the upset rivet blank into a corresponding cleaning line and a pickling line for cleaning, wherein the purpose of cleaning is to remove oil and raw material coatings on the surface of the product, otherwise, the product is polluted.
And step A2, performing heat treatment on the cleaned rivet blank to improve the strength of the product and ensure that the performance of the product after heat treatment meets the requirements. The heat treatment comprises the following specific steps: and carrying out solution heat preservation treatment on the cleaned rivet blank in a vacuum water quenching furnace, wherein the temperature of the solution heat treatment is 850-900 ℃, and then carrying out aging treatment on the rivet blank after the solution heat treatment in a vacuum aging furnace, wherein the temperature of the aging treatment is 500-600 ℃.
Step S2, the shank diameter 2 of the rivet blank is ground so that the rivet blank forms a large diameter section 21 and a small diameter section 22 in sequence along the shank diameter 2 from one end of the head 1 of the rivet blank, where the large diameter section 21 corresponds to a section where the rivet passes through the connected member, and the small diameter section 22 corresponds to a working section and a clamping section of the rivet.
In step S3, a thread rolling machine is used to thread a section of the small diameter section 22 of the shank diameter 2 away from the head 1 to form the clamping section ring groove 3 without heating the rivet blank.
And step S4, turning a section, close to the head part 1, of the small-diameter section 22 of the rod diameter 2 by using a lathe to form a working section annular groove 4, and turning the small-diameter section 22 between the clamping section annular groove 3 and the working section annular groove 4 to form a fracture groove 5, so that the finished rivet is formed. The lathe is provided with a rotary clamping element, a clamping section annular turning tool and a breaking groove turning tool, during turning, a rivet blank is fixed on the rotary clamping element, and then the clamping section annular turning tool and the breaking groove turning tool are controlled to turn respectively, so that the cutting of the working section annular groove 4 and the breaking groove 5 can be completed on one machine tool only by controlling the clamping section annular turning tool and the breaking groove turning tool to feed or retract, equipment is saved, and the efficiency is improved.
And step S5, performing flaw detection on the finished rivet by using a DNT flaw detector to detect whether the product has microscopic defects or not and ensure the quality requirement of the product.
And step S6, cleaning, spraying and drying the surface of the finished rivet to protect or lubricate the surface of the product and improve the surface hardness and the corrosion resistance of the product.
And step S7, carrying out corresponding detection and packaging on the finished rivets.
In the embodiment, the rivet cannot be heated when being subjected to thread rolling, otherwise the strength and the rigidity of the rivet are affected, but under the condition of no heating, the thread rolling machine is difficult to control the depth of the thread rolling groove, the working section ring groove 4 of the rivet is used for being combined with the nail sleeve, the fracture groove 5 of the rivet is used for controlling the fracture of the rivet, so that the requirements of the working section ring groove 4 and the fracture groove 5 on the machining precision are high, the working section ring groove 4 and the fracture groove 5 can ensure the machining precision of the working section ring groove and the fracture groove 5 through turning, the clamping section ring groove 3 is used for being combined with a rivet gun during riveting, the requirements of the clamping section ring groove 3 on the machining precision are low, and the clamping section ring groove 3 can meet the requirements through thread rolling. Therefore, compared with the prior art, the rod diameter 2 of the rivet blank is ground into the large-diameter section 21 and the small-diameter section 22, the clamping section annular groove 3 is formed on the small-diameter section 22 through thread rolling, and the working section annular groove 4 and the fracture groove 5 are formed through turning, so that the production efficiency is improved, the processing cost is reduced, defective products of products are reduced, and the production efficiency and the quality of the products are guaranteed.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (6)
1. The processing technology of the ring groove rivet is characterized by comprising the following steps:
step S1, upsetting the rivet material into a rivet blank with a head and a rod diameter;
step A1, putting the upset rivet blank into a corresponding cleaning line and a pickling line for cleaning;
step A2, carrying out heat treatment on the cleaned rivet blank;
step S2, grinding the rod diameter of the rivet blank to form a large-diameter section and a small-diameter section of the rivet blank along the rod diameter from one end of the head of the rivet blank;
step S3, under the condition that the rivet blank is not heated, a thread rolling machine is adopted to thread a section of the small-diameter section of the rod diameter far away from the head to form a clamping section annular groove;
and step S4, turning a section of the small-diameter section of the rod diameter close to the head by using a lathe to form a working section annular groove, and turning the small-diameter section between the clamping section annular groove and the working section annular groove to form a fracture groove, so that a finished rivet is formed.
2. A process for manufacturing a ring groove rivet according to claim 1, wherein in the step S1, the upsetting temperature of the rivet material is 600-650 ℃.
3. A process of manufacturing a ring-groove rivet according to claim 1, wherein in step S1, in step S4, the lathe is provided with a rotary clamping member, a clamping segment ring-groove turning tool and a breaking groove turning tool, and the rivet blank is fixed to the rotary clamping member during turning, and then the clamping segment ring-groove turning tool and the breaking groove turning tool are controlled to perform turning, respectively.
4. The process for manufacturing a ring groove rivet according to claim 1, wherein in the step A2, the heat treatment comprises the following specific steps: and carrying out solution heat preservation treatment on the cleaned rivet blank in a vacuum water quenching furnace, wherein the temperature of the solution heat treatment is 850-900 ℃, and then carrying out aging treatment on the rivet blank after the solution heat treatment in a vacuum aging furnace, wherein the temperature of the aging treatment is 500-600 ℃.
5. The process of manufacturing a ring groove rivet according to claim 1, wherein the step S4 is followed by the steps of:
step S5, flaw detection is carried out on the finished rivet by utilizing a DNT flaw detector;
step S6, cleaning, spraying and drying the surface of the finished rivet;
and step S7, carrying out corresponding detection and packaging on the finished rivets.
6. A process for manufacturing a ring groove rivet according to any one of claims 1 to 5, wherein the rivet is made of a titanium alloy material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910675482.3A CN110355531B (en) | 2019-07-25 | 2019-07-25 | Processing technology of ring groove rivet |
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| CN201910675482.3A CN110355531B (en) | 2019-07-25 | 2019-07-25 | Processing technology of ring groove rivet |
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| CN110355531A CN110355531A (en) | 2019-10-22 |
| CN110355531B true CN110355531B (en) | 2020-11-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111421309A (en) * | 2020-05-26 | 2020-07-17 | 王丽 | Titanium alloy hake rivet manufacturing process |
| CN111571143B (en) * | 2020-05-26 | 2022-03-04 | 王丽 | Self-plugging rivet manufacturing process |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102689164A (en) * | 2012-06-19 | 2012-09-26 | 东方蓝天钛金科技有限公司 | Processing process of titanium alloy ring groove rivet with big length-to-diameter ratio |
| CN103009011A (en) * | 2012-12-28 | 2013-04-03 | 贵州精立航太科技有限公司 | Processing method for stainless steel high-strength bolt |
| CN104100622A (en) * | 2013-04-08 | 2014-10-15 | 彭亮生 | Large-scale and high-intensity rivet connection pair and manufacturing method thereof |
| CN104625575A (en) * | 2013-11-06 | 2015-05-20 | 西安福斯特动力科技有限公司 | Machining technology of integrally-formed multi-thread bolt |
| CN104889698A (en) * | 2015-06-19 | 2015-09-09 | 航天精工股份有限公司 | Titanium alloy ring groove rivet integral processing method |
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2019
- 2019-07-25 CN CN201910675482.3A patent/CN110355531B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102689164A (en) * | 2012-06-19 | 2012-09-26 | 东方蓝天钛金科技有限公司 | Processing process of titanium alloy ring groove rivet with big length-to-diameter ratio |
| CN103009011A (en) * | 2012-12-28 | 2013-04-03 | 贵州精立航太科技有限公司 | Processing method for stainless steel high-strength bolt |
| CN104100622A (en) * | 2013-04-08 | 2014-10-15 | 彭亮生 | Large-scale and high-intensity rivet connection pair and manufacturing method thereof |
| CN104625575A (en) * | 2013-11-06 | 2015-05-20 | 西安福斯特动力科技有限公司 | Machining technology of integrally-formed multi-thread bolt |
| CN104889698A (en) * | 2015-06-19 | 2015-09-09 | 航天精工股份有限公司 | Titanium alloy ring groove rivet integral processing method |
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