CN103480924B - The processing method of bolt round corner and processing unit (plant) - Google Patents

The processing method of bolt round corner and processing unit (plant) Download PDF

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Publication number
CN103480924B
CN103480924B CN201310390169.8A CN201310390169A CN103480924B CN 103480924 B CN103480924 B CN 103480924B CN 201310390169 A CN201310390169 A CN 201310390169A CN 103480924 B CN103480924 B CN 103480924B
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China
Prior art keywords
bolt
processed
round corner
working groove
plant
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CN201310390169.8A
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CN103480924A (en
Inventor
饶义钟
何宁
王梁栋
彭玉海
熊明柱
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SHAANXI TIANDA AVIATION STANDARD PARTS CO Ltd
Shaanxi University of Technology
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SHAANXI TIANDA AVIATION STANDARD PARTS CO Ltd
Shaanxi University of Technology
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Priority to CN201310390169.8A priority Critical patent/CN103480924B/en
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Abstract

Bolt round corner processing unit (plant) disclosed by the invention, comprise columniform bottom base, the end face of bottom base is provided with working groove, working groove is the cylindrical shape of both ends open, the two ends of working groove are respectively arranged with conical machined surface, the machined surface of upper end is provided with two balls, bolt round corner processing unit (plant) also comprises extrusion head, for extruding bolt to be processed from the upper end of bolt to be processed.The invention also discloses a kind of processing method of bolt round corner, comprise erecting device, place, extruding rotates, the steps such as ball extruding, bolt round corner processing method of the present invention, without the need to heating, welding, therefore can not cause damage to bolt, improve the intensity of bolt, especially reduce bolt round corner place and concentrate the risk of two generation fatigue fractures due to stress when using, meet the needs of the special industries such as large aircraft manufacturing for bolt.

Description

The processing method of bolt round corner and processing unit (plant)
Technical field
The invention belongs to plant equipment manufacture method technical field, relate to a kind of processing method of bolt round corner, the invention still further relates to a kind of processing unit (plant) for implementing this processing method.
Background technology
Flourish along with modern industry, the requirement of each field to high-strength bolt is more and more higher, particularly the major project such as large aircraft in Aeronautics and Astronautics field, and the technical requirement proposed special bolt is just higher.Bolt under head fillet place is stress concentration point, it is one of dangerouse cross-section that fatigue fracture occurs, usually the mode of hot-working or welding is used in the prior art, there is the problem of insufficient strength, easily fracture in the bolt under head fillet processed, and prior art is not specifically designed to the device of processing bolt fillet yet.
Summary of the invention
The object of the present invention is to provide a kind of bolt round corner processing unit (plant), solve the problem that prior art is not specifically designed to the device of processing bolt fillet.
Another object of the present invention is the processing method providing a kind of bolt round corner, solves the bolt under head fillet insufficient strength of existing processing method processing, the problem of easily fracture.
The technical solution adopted in the present invention is: bolt round corner processing unit (plant), comprise columniform bottom base, the end face of bottom base is provided with working groove, working groove is the cylindrical shape of both ends open, the two ends of working groove are respectively arranged with conical machined surface, the machined surface of upper end is provided with two balls, bolt round corner processing unit (plant) also comprises extrusion head, for extruding bolt to be processed from the upper end of bolt to be processed.
Feature of the present invention is also,
One end of extrusion head is provided with conical head.
Trip bolt is adopted to be fixedly connected with between bottom base with working groove.
Another technical scheme of the present invention is that the processing method of bolt round corner, comprises the steps:
The first step, gets bolt to be processed and bolt round corner processing unit (plant);
Second step, is fixed on the bottom base of bolt round corner processing unit (plant) on the workbench of drilling machine, then is fixed on bottom base by working groove by trip bolt;
3rd step, puts into working groove by bolt to be processed from the upper end open of working groove, and places ball between the nut and machined surface of bolt to be processed;
4th step, inserted by the conical head of extrusion head in the upper end notch of bolt to be processed, the other end of extrusion head is connected with the main shaft of drilling machine;
5th step, start drilling machine, downward extruding bolt to be processed, the main axis of drilling machine simultaneously, drive extrusion head rotates, bolt to be processed so also starts to rotate, and the lower fillet place that processing bolt treated in the process by ball carries out extruding and rubbing, and final formation has the fillet bolt of the lower fillet of arc-shaped;
6th step, the main shaft of drilling machine stops the rotation, and up, makes extrusion head depart from fillet bolt, takes out the fillet bolt processed, complete the processing to bolt round corner.
The invention has the beneficial effects as follows: the processing method of bolt round corner of the present invention, use bolt round corner processing unit (plant) to treat processing bolt to process, without the need to heating, welding, therefore damage can not be caused to bolt, improve the intensity of bolt, especially reduce bolt round corner place and concentrate the risk of two generation fatigue fractures due to stress when using, meet the needs of the special industries such as large aircraft manufacturing for bolt.
Accompanying drawing explanation
Fig. 1 is the structural representation of bottom base and working groove in bolt round corner processing unit (plant) of the present invention;
Fig. 2 is the structural representation of extrusion head in processing unit (plant) of the present invention;
Fig. 3 is the using state figure of processing unit (plant) of the present invention.
In figure, 1. bottom base, 2. working groove, 3. ball, 4. trip bolt, 5. extrusion head, 51. conical heads, 6. bolt to be processed, 7. machined surface.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is described in detail.
The invention provides a kind of bolt round corner processing unit (plant), as shown in Figure 1, comprise columniform bottom base 1, the end face of bottom base 1 is provided with working groove 2, working groove 2 is the cylindrical shape of both ends open, and the two ends of working groove 2 are respectively arranged with conical machined surface 7, the machined surface 7 of upper end is provided with two balls 3, bolt round corner processing unit (plant) also comprises extrusion head 5, as shown in Figure 2, for extruding bolt to be processed from the upper end of bolt to be processed.
One end of extrusion head 5 is provided with conical head 51, for being connected with bolt to be processed man-hour adding.
Trip bolt 4 is adopted to be fixedly connected with between bottom base 1 with working groove 2.
Present invention also offers a kind of processing method of bolt round corner, comprise the steps:
The first step, is fixed on bottom base 1 on the workbench of drilling machine, then is fixed on bottom base 1 by working groove 2 by trip bolt 4;
Second step, puts into working groove 2 by bolt 6 to be processed from the upper end open of working groove 2, and places ball 3 between the nut and machined surface 7 of bolt 6 to be processed, as shown in Figure 3;
3rd step, inserted by the conical head 51 of extrusion head 5 in the upper end notch of bolt 6 to be processed, the other end of extrusion head 5 is connected with the main shaft of drilling machine;
4th step, start drilling machine, downward extruding bolt to be processed, the main axis of drilling machine simultaneously, extrusion head 5 is driven to rotate, bolt 6 to be processed so also starts to rotate, and the lower fillet place that processing bolt treated in the process by ball 3 carries out extruding and rubbing, and final formation has the fillet bolt of the lower fillet of arc-shaped;
5th step, the main shaft of drilling machine stops the rotation, and up, makes extrusion head 5 depart from fillet bolt, takes out the fillet bolt processed, completes the processing to bolt round corner.
By the way, the processing method of bolt round corner of the present invention solves the bolt under head fillet insufficient strength of existing processing method processing, the problem of easily fracture.The processing method of bolt round corner of the present invention, use bolt round corner processing unit (plant) to treat processing bolt to process, without the need to heating, welding, therefore damage can not be caused to bolt, improve the intensity of bolt, especially reduce bolt round corner place and concentrate the risk of two generation fatigue fractures due to stress when using, meet the needs of the special industries such as large aircraft manufacturing for bolt.

Claims (1)

1. bolt round corner processing method, it is characterized in that, employ a kind of bolt round corner processing unit (plant), this device comprises columniform bottom base (1), the end face of described bottom base (1) is provided with working groove (2), the cylindrical shape that described working groove (2) is both ends open, the two ends of working groove (2) are respectively arranged with conical machined surface (7), the machined surface (7) of upper end is provided with two balls (3), described bolt round corner processing unit (plant) also comprises extrusion head (5), for extruding bolt to be processed from the upper end of bolt to be processed, one end of described extrusion head (5) is provided with conical head (51), trip bolt (4) is adopted to be fixedly connected with between described bottom base (1) with described working groove (2),
The method comprises the steps:
The first step, gets bolt to be processed and described bolt round corner processing unit (plant);
Second step, is fixed on the bottom base (1) of described bolt round corner processing unit (plant) on the workbench of drilling machine, then is fixed on bottom base (1) by working groove (2) by trip bolt (4);
3rd step, bolt to be processed (6) is put into working groove (2) from the upper end open of working groove (2), and place ball (3) between the nut and machined surface (7) of bolt to be processed (6);
4th step, insert in the upper end notch of bolt to be processed (6) by the conical head (51) of extrusion head (5), the other end of described extrusion head (5) is connected with the main shaft of drilling machine;
5th step, start drilling machine, downward extruding bolt to be processed, the main axis of drilling machine simultaneously, extrusion head (5) is driven to rotate, bolt (6) to be processed so also starts to rotate, and the lower fillet place that processing bolt treated in the process by ball (3) carries out extruding and rubbing, and final formation has the fillet bolt of the lower fillet of arc-shaped;
6th step, the main shaft of drilling machine stops the rotation, and up, makes extrusion head (5) depart from fillet bolt, takes out the fillet bolt processed, complete the processing to bolt round corner.
CN201310390169.8A 2013-08-30 2013-08-30 The processing method of bolt round corner and processing unit (plant) Active CN103480924B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310390169.8A CN103480924B (en) 2013-08-30 2013-08-30 The processing method of bolt round corner and processing unit (plant)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310390169.8A CN103480924B (en) 2013-08-30 2013-08-30 The processing method of bolt round corner and processing unit (plant)

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CN103480924B true CN103480924B (en) 2015-10-21

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105345475A (en) * 2015-11-09 2016-02-24 瑞安市华诺五金制造有限公司 Technology for machining bolts
CN106271377B (en) * 2016-09-27 2018-07-20 北京成立科技有限公司 The full-automatic fillet rolling machine of high locked bolts
CN109047957A (en) * 2018-10-29 2018-12-21 王欣怡 A kind of bead cutter for screw production

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3626531A (en) * 1969-05-29 1971-12-14 Standard Pressed Steel Co Method for forming ultra high-strength buckable rivets
CN101020265A (en) * 2007-02-15 2007-08-22 陈显国 Screwhead punching pin locking method and screwhead punching die
CN102091836A (en) * 2010-12-15 2011-06-15 贵州大学 Precise control device for rolling force of lower fillet of high-strength bolt head

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3626531A (en) * 1969-05-29 1971-12-14 Standard Pressed Steel Co Method for forming ultra high-strength buckable rivets
CN101020265A (en) * 2007-02-15 2007-08-22 陈显国 Screwhead punching pin locking method and screwhead punching die
CN102091836A (en) * 2010-12-15 2011-06-15 贵州大学 Precise control device for rolling force of lower fillet of high-strength bolt head

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