CN103962484A - Method for machining fastening piece threads - Google Patents
Method for machining fastening piece threads Download PDFInfo
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- CN103962484A CN103962484A CN201410172348.9A CN201410172348A CN103962484A CN 103962484 A CN103962484 A CN 103962484A CN 201410172348 A CN201410172348 A CN 201410172348A CN 103962484 A CN103962484 A CN 103962484A
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- cylindrical die
- die roll
- adjustable
- securing member
- screw thread
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Abstract
The invention relates to a method for machining strengthening screw bolt threads, in particular to a method for machining strengthening screw bolt threads with a specially-made clamp and a standard cylindrical die roll on common thread rolling lathe equipment. The method comprises the steps of fastening piece clamping, clamp adjusting, cylindrical die roll adjusting and roll finishing. The machining method is easy to operate and reliable, damage on a workpiece during machining is avoided, high production efficiency can be achieved, the requirement for large-batch production is met, machining quality is high, surface roughness is low, and the synthesized mechanical property of the machine workpiece is greatly improved.
Description
Technical field
The present invention relates to a kind of method of processing high-strength bolt screw thread, specifically on common screw-rolling machine bed apparatus, the method for utilizing special fixture and standard cylindrical die roll to process high-strength bolt screw thread.
Background technology
In plant equipment, sometimes need to use high-strength bolt or powerful screw, reach required bonding strength by high-strength bolt or powerful screw.In prior art, high-strength bolt or powerful screw material are generally selected the 35CrMoA steel alloy after modifier treatment with higher comprehensive mechanical performance, and hardness is 36-38HRC.On high-strength bolt or powerful screw, there is one section of screw thread, screw thread on high-strength bolt or powerful screw is had to higher size, shape, position of related features and fineness requirement.On rolled thread lathe, process high-strength bolt or powerful screw thread by the method (being called rolled thread processing method in technique) of processing General fasteners screw thread, there will be size, shape, position of related features and fineness to require not reach the problem of drawing technical requirement.The screw thread (being called cutted thread processing method in technique) of the molding cutter (threading tool) that therefore generally adopts prong structure turning high-strength bolt or powerful screw on engine lathe, add man-hour by bolt or screw clamping on lathe headstock scroll chuck, lathe spindle drives bolt or screw synchronous rotary, drives nib-forming threading tool through repeatedly repeatedly could turning going out required screw thread by saddle length feed.The greatest problem that this processing method exists is with lathe tool cutting thread meeting, the fibr tissue of metal to be cut off, and the metallic fiber of rolled thread is continuous, so the comprehensive mechanical performance such as screw thread top layer metal hardness and intensity of rolling and processing will be better than turning screw thread out greatly.Meanwhile, such one section of screw thread is processed in turning will walk several cuttves, and working (machining) efficiency is low, and surface roughness is also high, is not suitable for large batch of production requirement.
Summary of the invention
The object of the invention is to overcome above-mentioned weak point, thereby a kind of method of processing fastener threads is provided, can realize higher crudy and production efficiency, meet large quantities of a large amount of production requirements.
According to technical scheme provided by the invention, a kind of method of processing fastener threads, is characterized in that: comprise the steps:
(1) by the securing member clamping of screw thread to be processed in fastener holder, the center of the securing member 13 of screw thread to be processed between fixing cylindrical die roll and the movable cylindrical die roll of rolled thread lathe, securing member epirelief shoulders is supported and is located by adjustable v-type piece, and on securing member, screw thread to be processed position is supported and located by adjustable supporting supporting block;
(2) unclamp the first trip bolt in adjustable supporting supporting block, adjust the height and position of adjustable supporting supporting block by changing the adjustable supporting supporting block pad of different-thickness, guarantee that the centre-height of securing member of screw thread to be processed is lower than the technical requirement of fixing cylindrical die roll and movable cylindrical die roll center 0.2 ~ 0.3mm, then first trip bolt that screws up with a wrench is fixed on adjustable supporting supporting block on rest pad fixed mount, mobile sliding bearing frame, make the adjustable v-type piece of sliding bearing frame upper end be positioned at securing member epirelief shoulders under, unclamp the second trip bolt on adjustable v-type piece, adjust the height and position of adjustable v-type piece by changing the V-block pad of different-thickness, the centre-height of guaranteeing the centre of location height of adjustable v-type piece and the securing member of screw thread to be processed is positioned at same level height, mobile movable cylindrical die roll makes movable cylindrical die roll shift to screw thread to be processed position outer round surface on fixing cylindrical die roll touch fastener, regulate the radial position of the adjustable v-type piece centre of location guarantee bolt shaft to be processed to the axially parallel of cylindrical die roll, position mixes up rear hand-tight make-up the second trip bolt adjustable v-type piece is fixed on sliding bearing frame, so complete the positioning and clamping of the securing member of screw thread to be processed,
(3) fixing cylindrical die roll and the movable cylindrical die roll of adjustment rolled thread lathe, make fixing cylindrical die roll and the movable cylindrical die roll half pitch distance that mutually staggers on axial location, be placed between two cylindrical die rolls with the plug thread gauge of standard, mobile movable cylindrical die roll makes movable cylindrical die roll shift to fixing cylindrical die roll and contact plug thread gauge, fix cylindrical die roll and the movable cylindrical die roll half pitch distance that mutually staggers when the side of plug thread gauge and fixing cylindrical die roll and movable cylindrical die roll is adjacent on axial location, now the fixing cylindrical die roll of rolled thread lathe and movable cylindrical die roll are adjusted to the right place;
(4) start rolled thread lathe and make fixing cylindrical die roll and the rotation of movable cylindrical die roll, the securing member that rotarily drives of fixing cylindrical die roll and movable cylindrical die roll rotates, and securing member rotation 30～35 turns rear roll extrusion and obtains needed screw thread.
Described securing member is high-strength bolt or powerful screw.
The rotary speed of described fixing cylindrical die roll and movable cylindrical die roll is 20～25m/min.
The thickness of described V-block pad has 3.0mm, 3.1mm, 3.2mm, 3.3mm, 3.4mm or five kinds of level of thickness of 3.5mm.
The thickness of described adjustable supporting supporting block pad has 3.0mm, 3.1mm, 3.2mm, 3.3mm, 3.4mm or five kinds of level of thickness of 3.5mm.
Compared with the prior art the present invention has the following advantages:
Processing method of the present invention is easy and simple to handle, reliable, has avoided the damage to workpiece in process; Can realize higher production efficiency, meet large quantities of a large amount of production requirements; Crudy is higher, and surface roughness is lower, and the comprehensive mechanical performance of the workpiece processing improves greatly.
Brief description of the drawings
Fig. 1 is machining sketch chart of the present invention.
Fig. 2 is the A-A cutaway view of fastener holder in Fig. 1.
Fig. 3 is B-B cutaway view in Fig. 2.
Fig. 4 is powerful bolt structure schematic diagram.
Fig. 5 is high-strength bolt structural representation.
Description of reference numerals: screw thread to be processed position, the powerful screw of 16-, 17-high-strength bolt on 1-clamp base, 2-adjustable supporting supporting block, 3-adjustable supporting supporting block pad, 4-the first trip bolt, 5-sliding bearing frame, 6-adjustable v-type piece, 7-the second trip bolt, 8-V type piece pad, 9-sliding tray, 10-rest pad fixed mount, the fixing cylindrical die roll of 11-, the movable cylindrical die roll of 12-, 13-securing member, 14-securing member epirelief shoulders, 15-securing member.
Detailed description of the invention
The present invention is below further described in connection with the embodiment in accompanying drawing:
As shown in Fig. 1 ~ 3, the fastener holder in a kind of method that adds fastener threads comprises clamp base 1, is from left to right provided with successively adjustable supporting supporting block 2 and adjustable v-type piece 6 in clamp base 1.Adjustable supporting supporting block 2 is fastened on the rest pad fixed mount 10 in clamp base 1 by the first trip bolt 4, between adjustable supporting supporting block 2 lower surfaces and clamp base 1 upper surface, is provided with adjustable supporting supporting block pad 3.On described rest pad fixed mount 10, being provided with adjustment hole with the first trip bolt 4 junctions makes the first trip bolt 4 to move up and down adjustment height and position along adjustment hole.Can regulate the height of adjustable supporting supporting block 2 by changing the adjustable supporting supporting block pad 3 of different-thickness.
Adjustable v-type piece 6 is fixed on sliding bearing frame 5 by the second trip bolt 7, and sliding bearing frame 5 is slidably mounted in the sliding tray that left and right directions in clamp base 1 arranges 9.Between described adjustable v-type piece 6 and sliding bearing frame 5, be provided with V-block pad 8.
Embodiment mono-: powerful screw 16 as shown in Figure 4, the thread parameter of powerful screw 16 is M30X2-5h, the Screw thread process method of powerful screw 16 as shown in Figure 1, comprises the steps:
(1) by powerful screw 16 clampings of screw thread to be processed in fastener holder, the center of the powerful screw 16 of screw thread to be processed between fixing cylindrical die roll 11 and the movable cylindrical die roll 12 of rolled thread lathe, securing member epirelief shoulders 14 is supported and is located by adjustable v-type piece 6, and on securing member, screw thread to be processed position 15 is supported and located by adjustable supporting supporting block 2;
(2) unclamp the first trip bolt 4 in adjustable supporting supporting block 2, select the thickness of the adjustable supporting supporting block pad 3(adjustable supporting supporting block pad 3 of minimum thickness 3.0mm to have 3.0mm, 3.1mm, 3.2mm, 3.3mm, 3.4mm, five kinds of level of thickness of 3.5mm), when changing the adjustable supporting supporting block pad 3 of next level of thickness after the every wearing and tearing in adjustable supporting supporting block 2 surface 0.1mm and adjust the height and position of adjustable supporting supporting block 2, guarantee that the centre-height of powerful screw 16 of screw thread to be processed is lower than the technical requirement of fixing cylindrical die roll 11 and movable cylindrical die roll 12 center 0.2 ~ 0.3mm, first trip bolt 4 that screws up with a wrench is again fixed on adjustable supporting supporting block 2 on rest pad fixed mount 10, mobile sliding bearing frame 5, make the adjustable v-type piece 6 of sliding bearing frame 5 upper ends be positioned at securing member epirelief shoulders 14 under, unclamp the second trip bolt 7 on adjustable v-type piece 6, select the thickness of the V-block pad 8(V type piece pad 8 of minimum thickness 3.0mm to have 3.0mm, 3.1mm, 3.2mm, 3.3mm, 3.4mm, five kinds of level of thickness of 3.5mm), when changing the adjustable supporting supporting block pad 8 of next level of thickness after the every wearing and tearing in adjustable supporting supporting block 2 surface 0.1mm) adjust the height and position of adjustable v-type piece 6, the centre of location height of guaranteeing adjustable v-type piece 6 is positioned at same level height with the centre-height of the powerful screw 16 of protecting screw thread to be processed, mobile movable cylindrical die roll 12 makes movable cylindrical die roll 12 shift to fixing cylindrical die roll 11 and contacts screw thread to be processed position 15 outer round surface of powerful screw 16, regulate 6 centre of location radial positions of adjustable v-type piece to guarantee powerful screw 16 axially and the axially parallel of cylindrical die roll, position mixes up rear hand-tight make-up the second trip bolt 7 adjustable v-type piece 6 is fixed on sliding bearing frame 5, so complete the positioning and clamping of the powerful screw 16 of screw thread to be processed, simultaneously because the moment of hand-tight make-up is little, adjustable v-type piece 6 also can adaptive act cylindrical die roll 12 the radially small variation of workpiece centre when feeding.
(3) fixing cylindrical die roll 11 and the movable cylindrical die roll 12 of adjustment rolled thread lathe, make fixing cylindrical die roll 11 and the movable cylindrical die roll 12 half pitch distance that mutually staggers on axial location, be placed between two cylindrical die rolls with the plug thread gauge of standard, mobile movable cylindrical die roll 12 makes movable cylindrical die roll 12 shift to fixing cylindrical die roll 11 and contact plug thread gauge, when being adjacent to, the side of plug thread gauge and fixing cylindrical die roll 11 and movable cylindrical die roll 12 fixes cylindrical die roll 11 and the movable cylindrical die roll 12 half pitch distance that mutually staggers on axial location, now the fixing cylindrical die roll 11 of rolled thread lathe and movable cylindrical die roll 12 are adjusted to the right place,
(4) starting rolled thread lathe rotates fixing cylindrical die roll 11 and movable cylindrical die roll 12, the powerful screw 16 that rotarily drives of fixing cylindrical die roll 11 and movable cylindrical die roll 12 rotates, powerful screw 16 rotates 35 and turns rear roll extrusion and obtain needed screw thread, and the rotary speed of fixing cylindrical die roll 11 and movable cylindrical die roll 12 is 25m/min.
Embodiment bis-: high-strength bolt 17 as shown in Figure 5, the thread parameter of high-strength bolt 17 is M30X2-5h, the Screw thread process method of high-strength bolt 17 as shown in Figure 1, comprises the steps:
(1) by the high-strength bolt of screw thread to be processed 17 clampings in fastener holder, the center of the high-strength bolt 17 of screw thread to be processed between fixing cylindrical die roll 11 and the movable cylindrical die roll 12 of rolled thread lathe, securing member epirelief shoulders 14 is supported and is located by adjustable v-type piece 6, and on securing member, screw thread to be processed position 15 is supported and located by adjustable supporting supporting block 2;
(2) unclamp the first trip bolt 4 in adjustable supporting supporting block 2, select the thickness of the adjustable supporting supporting block pad 3(adjustable supporting supporting block pad 3 of minimum thickness 3.0mm to have 3.0mm, 3.1mm, 3.2mm, 3.3mm, 3.4mm, five kinds of level of thickness of 3.5mm), when changing the adjustable supporting supporting block pad 3 of next level of thickness after the every wearing and tearing in adjustable supporting supporting block 2 surface 0.1mm and adjust the height and position of adjustable supporting supporting block 2, guarantee that the centre-height of high-strength bolt 17 of screw thread to be processed is lower than the technical requirement of fixing cylindrical die roll 11 and movable cylindrical die roll 12 center 0.2 ~ 0.3mm, first trip bolt 4 that screws up with a wrench is again fixed on adjustable supporting supporting block 2 on rest pad fixed mount 10, mobile sliding bearing frame 5, make the adjustable v-type piece 6 of sliding bearing frame 5 upper ends be positioned at securing member epirelief shoulders 14 under, unclamp the second trip bolt 7 on adjustable v-type piece 6, select the thickness of the V-block pad 8(V type piece pad 8 of minimum thickness 3.0mm to have 3.0mm, 3.1mm, 3.2mm, 3.3mm, 3.4mm, five kinds of level of thickness of 3.5mm), when changing the adjustable supporting supporting block pad 8 of next level of thickness after the every wearing and tearing in adjustable supporting supporting block 2 surface 0.1mm and adjust the height and position of adjustable v-type piece 6, the centre of location height of guaranteeing adjustable v-type piece 6 is positioned at same level height with the centre-height of the high-strength bolt 17 of protecting screw thread to be processed, mobile movable cylindrical die roll 12 makes movable cylindrical die roll 12 shift to fixing cylindrical die roll 11 and contacts screw thread to be processed position 15 outer round surface of high-strength bolt 17, regulate 6 centre of location radial positions of adjustable v-type piece to guarantee high-strength bolt 17 axially and the axially parallel of cylindrical die roll, position mixes up rear hand-tight make-up the second trip bolt 7 adjustable v-type piece 6 is fixed on sliding bearing frame 5, so complete the positioning and clamping of the high-strength bolt 17 of screw thread to be processed, simultaneously because the moment of hand-tight make-up is little, adjustable v-type piece 6 also can adaptive act cylindrical die roll 12 the radially small variation of workpiece centre when feeding.
(3) fixing cylindrical die roll 11 and the movable cylindrical die roll 12 of adjustment rolled thread lathe, make fixing cylindrical die roll 11 and the movable cylindrical die roll 12 half pitch distance that mutually staggers on axial location, be placed between two cylindrical die rolls with the plug thread gauge of standard, mobile movable cylindrical die roll 12 makes movable cylindrical die roll 12 shift to fixing cylindrical die roll 11 and contact plug thread gauge, when being adjacent to, the side of plug thread gauge and fixing cylindrical die roll 11 and movable cylindrical die roll 12 fixes cylindrical die roll 11 and the movable cylindrical die roll 12 half pitch distance that mutually staggers on axial location, now the fixing cylindrical die roll 11 of rolled thread lathe and movable cylindrical die roll 12 are adjusted to the right place,
(4) starting rolled thread lathe rotates fixing cylindrical die roll 11 and movable cylindrical die roll 12, the high-strength bolt 17 that rotarily drives of fixing cylindrical die roll 11 and movable cylindrical die roll 12 rotates, high-strength bolt 17 rotates 30 and turns rear roll extrusion and obtain needed screw thread, and the rotary speed of fixing cylindrical die roll 11 and movable cylindrical die roll 12 is 20m/min.
Claims (5)
1. a method of processing fastener threads, is characterized in that, comprises the steps:
(1) by the securing member of screw thread to be processed (13) clamping in fastener holder, the securing member (13) of screw thread to be processed is positioned at the center between fixing cylindrical die roll (11) and the movable cylindrical die roll (12) of rolled thread lathe, securing member epirelief shoulders (14) supports and location by adjustable v-type piece (6), and on securing member, screw thread to be processed position (15) is supported and location by adjustable supporting supporting block (2);
(2) unclamp the first trip bolt (4) in adjustable supporting supporting block (2), adjust the height and position of adjustable supporting supporting block (4) by changing the adjustable supporting supporting block pad (3) of different-thickness, guarantee that the centre-height of securing member (13) of screw thread to be processed is lower than the technical requirement of fixing cylindrical die roll (11) and movable cylindrical die roll (12) center 0.2 ~ 0.3mm, then the first trip bolt (4) that screws up with a wrench is fixed on adjustable supporting supporting block (2) on rest pad fixed mount (10), mobile sliding bearing frame (5), make the adjustable v-type piece (6) of sliding bearing frame (5) upper end be positioned at securing member epirelief shoulders (14) under, unclamp the second trip bolt (7) on adjustable v-type piece (6), adjust the height and position of adjustable v-type piece (6) by changing the V-block pad (8) of different-thickness, the centre-height of guaranteeing the centre of location height of adjustable v-type piece (6) and the securing member (13) of screw thread to be processed is positioned at same level height, mobile movable cylindrical die roll (12) makes movable cylindrical die roll (12) shift to screw thread to be processed position (15) outer round surface on fixing cylindrical die roll (11) touch fastener, regulate adjustable v-type piece (6) centre of location radial position guarantee bolt shaft to be processed to the axially parallel of cylindrical die roll, position mixes up rear hand-tight make-up the second trip bolt (7) adjustable v-type piece (6) is fixed on sliding bearing frame (5), so complete the positioning and clamping of the securing member (13) of screw thread to be processed,
(3) fixing cylindrical die roll (11) and the movable cylindrical die roll (12) of adjustment rolled thread lathe, make fixing cylindrical die roll (11) and movable cylindrical die roll (12) the half pitch distance that mutually staggers on axial location, be placed between two cylindrical die rolls with the plug thread gauge of standard, mobile movable cylindrical die roll (12) makes movable cylindrical die roll (12) shift to fixing cylindrical die roll (11) and contact plug thread gauge, when being adjacent to, the side of plug thread gauge and fixing cylindrical die roll (11) and movable cylindrical die roll (12) fixes cylindrical die roll (11) and the movable cylindrical die roll 12 half pitch distance that mutually staggers on axial location, now the fixing cylindrical die roll (11) of rolled thread lathe and movable cylindrical die roll (12) are adjusted to the right place,
(4) start rolled thread lathe and make fixing cylindrical die roll (11) and movable cylindrical die roll (12) rotation, the securing member that rotarily drives of fixing cylindrical die roll (11) and movable cylindrical die roll (12) rotates, and securing member rotation 30～35 turns rear roll extrusion and obtains needed screw thread.
2. a kind of method of processing fastener threads as claimed in claim 1, is characterized in that: described securing member (13) is high-strength bolt (16) or powerful screw (17).
3. a kind of method of processing fastener threads as claimed in claim 1, is characterized in that: the rotary speed of described fixing cylindrical die roll (11) and movable cylindrical die roll (12) is 20～25m/min.
4. a kind of method of processing fastener threads as claimed in claim 1, is characterized in that: the thickness of described V-block pad (8) has 3.0mm, 3.1mm, 3.2mm, 3.3mm, 3.4mm or five kinds of level of thickness of 3.5mm.
5. a kind of method of processing fastener threads as claimed in claim 1, is characterized in that: the thickness of described adjustable supporting supporting block pad (3) has 3.0mm, 3.1mm, 3.2mm, 3.3mm, 3.4mm or five kinds of level of thickness of 3.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410172348.9A CN103962484A (en) | 2014-04-26 | 2014-04-26 | Method for machining fastening piece threads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410172348.9A CN103962484A (en) | 2014-04-26 | 2014-04-26 | Method for machining fastening piece threads |
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| CN103962484A true CN103962484A (en) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410172348.9A Pending CN103962484A (en) | 2014-04-26 | 2014-04-26 | Method for machining fastening piece threads |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108213290A (en) * | 2016-12-12 | 2018-06-29 | 中国航空工业标准件制造有限责任公司 | A kind of flexible positioning device of rolled thread |
| CN109531061A (en) * | 2018-11-23 | 2019-03-29 | 襄阳福瑞特机械制造有限公司 | A kind of high rigidity screw rod production technology and rolling screw-threads equipment |
| CN112191781A (en) * | 2020-09-21 | 2021-01-08 | 宜昌船舶柴油机有限公司 | Rapid adjusting tool and method for equipment before threading and rolling |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109531061A (en) * | 2018-11-23 | 2019-03-29 | 襄阳福瑞特机械制造有限公司 | A kind of high rigidity screw rod production technology and rolling screw-threads equipment |
| CN112191781A (en) * | 2020-09-21 | 2021-01-08 | 宜昌船舶柴油机有限公司 | Rapid adjusting tool and method for equipment before threading and rolling |
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Application publication date: 20140806 |