CN103752741A - Method from a driving rotating shaft to feeding three die to roll to form screw element - Google Patents
Method from a driving rotating shaft to feeding three die to roll to form screw element Download PDFInfo
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- CN103752741A CN103752741A CN201410012625.XA CN201410012625A CN103752741A CN 103752741 A CN103752741 A CN 103752741A CN 201410012625 A CN201410012625 A CN 201410012625A CN 103752741 A CN103752741 A CN 103752741A
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Abstract
The invention discloses a method from a driving rotating shaft to a feeding three die to roll to form a screw element. Clamping workpieces are mounted first, three rolling dies rotates synchronically in the same direction, and the workpieces rotate and feeds axially, the dies finish rolling and forming on threads of the workpieces and clamped tightly via a front tips and die threads integrated tips and retract reversely at the same time and unload. The the workpieces rotate automatically to enable the rolling dies to match with the workpiece rotating speed, the problems of complicated die structure caused by rolling die axis inclination, machine tool adjusting complication and the like are avoided, long thread parts with high and big thread teeth and large in deformation quantity can be processed in high efficiency and high quality.
Description
Technical field
The invention belongs to advanced material forming technique field, be specifically related to a kind of method of active rotation axial feed three mould rolling forming screw elements.
Background technology
The core transmission component of the screw thread such as leading screw, screw rod class part equipment manufacturing industry, transmission system power, carries complicated moment of torsion, and the normal operation of equipment is played a crucial role.Along with the develop rapidly of China's equipment manufacture, the demand of such high-performance, the long thread part of high accuracy is increased day by day, particularly its performance is had higher requirement.
Traditional long thread part processing method be take metal cutting method as main, and production efficiency is low, waste material and the energy; Meanwhile, due to metallic fiber be cut off cause product mechanical performance and surface quality poor.Adopt axial feed rolling forming thread part, than traditional cutting technology, there is the plurality of advantages such as production efficiency is high, stock utilization is high, good product performance, become gradually the main flow processing technology of screw element.
Axial feed rolled thread part adopts the manufacturing process that roll die axis tilts more at present, adopts two long thread parts of roll dies shaping more, and mould profile of tooth has annular tooth and thread two classes.Due to mold axis and axis of workpiece intersection, thereby it is complicated that mould structure complexity, lathe are adjusted, and increase roll unit complex structure degree, and have decrement problems of too.While utilizing the lead angle of roll die and formed thereby screw element different, workpiece produces axial displacement and can avoid mold axis and axis of workpiece to intersect, but has equally decrement problems of too.Being difficult to be applicable to the long thread part that thread is tall and big, deflection is large is shaped.
For reducing workpiece, often turn decrement, often adopt roll die to be interrupted radial feed, and make workpiece repeatedly roll extrusion back and forth by changing roll die direction of rotation, reach the screw thread requirement degree of depth.This has reduced efficiency, has increased equipment complexity.Making roll die first contact work end is taper, also can reduce workpiece and often turn decrement.But the shaping initial stage easily produces and slides, and makes the problems such as roll die is inharmonious with workpiece rotational frequency, screw thread is not connected, axial feed velocity is unstable.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of method of active rotation axial feed three mould rolling forming screw elements, by workpiece active rotation, roll die and workpiece rotary speed are matched, the mould structure of having avoided roll die axis to tilt to bring is complicated, lathe is adjusted the problems such as complicated, can high efficiency, machining screw tooth depth is large in high quality, deflection is large long thread part.
In order to achieve the above object, the technical solution used in the present invention is:
A method for active rotation axial feed three mould rolling forming screw elements, comprises the steps:
Step 1, clamping workpiece 2, workpiece 2 by front top 1 and mould screw thread integrated top 3 clamp, guarantee that workpiece 2 is parallel with the axis of three roll dies 4;
Step 2, three synchronous rotating in same directions of roll die 4, the axis of three roll dies 4 is parallel to each other, along 120 ° of equidistant arrays of workpiece 2 circumferencial direction; Roll die 4 is radially pressed into basil section a by increment and a roll extrusion correction section b forms, and two segment length are respectively L
a, L
b, and meet L
a<L
b; Increment is radially pressed into the increment type rolling forming that basil section a first carries out screw thread, then by roll extrusion, proofreaies and correct section b and carry out roll extrusion correction; Wherein, to be radially pressed into basil angular range be 1 °～10 ° to increment;
Step 3, workpiece 2 active rotation axial feed, completed the rolling forming of screw thread on workpiece 2 by roll die 4;
The intermeshing transmission of section b is proofreaied and correct in thread segment c on mould screw thread integrated top 3 and roll die 4 roll extrusion, realizes before workpiece 2 contacts with roll die 4 and has the rotary speed matching; Thread segment c and screw thread to be formed on mould screw thread integrated top 3 have identical dimensional structure, and the length of the thread segment c on mould screw thread integrated top 3 is L
c,, and meet L
c>L
a;
It is different from the lead angle of the integrated top 3 thread segment c of mould screw thread that the lead angle of section b is proofreaied and correct in roll die 4 roll extrusion, and when being engaged with each other transmission, mould screw thread integrated top 3 produces axial displacement, thereby realizes workpiece 2 axial feeds; Section b engagement is proofreaied and correct in the screw thread being shaped on workpiece 2 and roll die 4 roll extrusion, realizes workpiece 2 axial feeds;
The present invention adopts three to have roll die that increment is radially the pressed into basil section long thread part that is shaped, and workpiece screw thread is because radial plastic deformation totally produces, can high efficiency, high-quality shaping thread is tall and big, deflection is large long thread part; Three roll dies are in space along 120 ° of equidistant arrays of axis of workpiece, and three symmetrical effects of direction make workpiece stressed more stable, and balance is better; Adopt roll die lead angle realize workpiece axial feeds different from workpiece lead angle, avoided roll die axis to tilt; The intermeshing transmission of section is proofreaied and correct in integrated thread segment and the roll die roll extrusion on top of mould screw thread, realize before workpiece contacts with roll die and there is the rotary speed matching, and realize the axial feed of rolling forming initial stage workpiece, guarantee that workpiece rotary speed and axial feed velocity are stable.
Accompanying drawing explanation
Fig. 1 is equipment therefor connection diagram of the present invention.
Fig. 2 is workpiece 2 of the present invention and roll die 4 layouts and motion schematic diagram.
Fig. 3 is squeezing roll pressing formation mould of the present invention 4 axonometric drawings.
Fig. 4 is squeezing roll pressing formation mould of the present invention 4 front views.
Fig. 5 is integrated top 3 schematic diagrames of mould screw thread of the present invention.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
The material of this example workpiece 2 adopts 45 steel, three synchronous rotating in same directions of roll die 4.
A method for active rotation axial feed three mould rolling forming screw elements, comprises the steps:
Step 1, clamping workpiece 2, with reference to Fig. 1, workpiece 2 by front top 1 and mould screw thread integrated top 3 clamp, guarantee that workpiece 2 is parallel with the axis of three roll dies 4;
Step 2, three synchronous rotating in same directions of roll die 4;
With reference to Fig. 2, the axis of three roll dies 4 is parallel to each other, along 120 ° of equidistant arrays of workpiece 2 circumferencial direction; With reference to Fig. 3, roll die 4 is radially pressed into basil section a by increment and a roll extrusion correction section b forms, and two segment length are respectively L
a, L
b, and meet L
a<L
b; Increment is radially pressed into the increment type rolling forming that basil section a first carries out screw thread, then by roll extrusion, proofreaies and correct section b and carry out roll extrusion correction; Wherein, with reference to Fig. 4, it is 1 °～10 ° that increment is radially pressed into basil angular range, is 3 ° in the present embodiment;
Step 3, workpiece 2 active rotation axial feed, completed the rolling forming of screw thread on workpiece 2 by roll die 4;
With reference to Fig. 5, the thread segment c on mould screw thread integrated top 3, the intermeshing transmission of section b is proofreaied and correct in thread segment c and roll die 4 roll extrusion, realizes before workpiece 2 contacts with roll die 4 and has the rotary speed matching; Thread segment c and screw thread to be formed on mould screw thread integrated top 3 have identical dimensional structure, and the length of the thread segment c on mould screw thread integrated top 3 is L
c,, and meet L
c>L
a;
It is different from the lead angle of the integrated top 3 thread segment c of mould screw thread that the lead angle of section b is proofreaied and correct in roll die 4 roll extrusion, and when being engaged with each other transmission, mould screw thread integrated top 3 produces axial displacement, thereby realizes workpiece 2 axial feeds; Section b engagement is proofreaied and correct in the screw thread being shaped on workpiece 2 and roll die 4 roll extrusion, realizes workpiece 2 axial feeds;
Claims (1)
1. a method for active rotation axial feed three mould rolling forming screw elements, is characterized in that, comprises the steps:
Step 1, clamping workpiece (2), workpiece (2) is clamped by front top (1) and mould screw thread integrated top (3), guarantees that workpiece (2) is parallel with the axis of three roll dies (4);
Step 2, the synchronous rotating in same direction of three roll dies (4), the axis of three roll dies (4) is parallel to each other, along 120 ° of equidistant arrays of workpiece (2) circumferencial direction; Roll die (4) is radially pressed into basil section a by increment and a roll extrusion correction section b forms, and two segment length are respectively L
a, L
b, and meet L
a<L
b; Increment is radially pressed into the increment type rolling forming that basil section a first carries out screw thread, then by roll extrusion, proofreaies and correct section b and carry out roll extrusion correction; Wherein, to be radially pressed into basil angular range be 1 °～10 ° to increment;
Step 3, workpiece (2) active rotation axial feed, complete the above rolling forming of screw thread of workpiece (2) by roll die (4);
The intermeshing transmission of section b is proofreaied and correct in thread segment c on mould screw thread integrated top (3) and roll die (4) roll extrusion, realizes before workpiece (2) contacts with roll die (4) and has the rotary speed matching; Thread segment c and screw thread to be formed on mould screw thread integrated top (3) have identical dimensional structure, and the length of the thread segment c on mould screw thread integrated top (3) is L
c,, and meet L
c>L
a;
It is different from the lead angle of mould screw thread integrated top (3) thread segment c that the lead angle of section b is proofreaied and correct in roll die (4) roll extrusion, and when being engaged with each other transmission, mould screw thread integrated top (3) produces axial displacement, thereby realizes workpiece (2) axial feed; Section b engagement is proofreaied and correct in the screw thread being shaped on workpiece (2) and roll die (4) roll extrusion, realizes workpiece (2) axial feed;
Step 4, workpiece (2) is clamped and is oppositely exited by front top (1) and mould screw thread integrated top (3) simultaneously, discharging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410012625.XA CN103752741B (en) | 2014-01-10 | 2014-01-10 | A kind of method of active rotation axial feed three mould rolling forming screw element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410012625.XA CN103752741B (en) | 2014-01-10 | 2014-01-10 | A kind of method of active rotation axial feed three mould rolling forming screw element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103752741A true CN103752741A (en) | 2014-04-30 |
| CN103752741B CN103752741B (en) | 2015-10-21 |
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|---|---|---|---|
| CN201410012625.XA Active CN103752741B (en) | 2014-01-10 | 2014-01-10 | A kind of method of active rotation axial feed three mould rolling forming screw element |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105363977A (en) * | 2015-12-03 | 2016-03-02 | 朱蔓茹 | Valve rod thread rolling machine |
| CN109759528A (en) * | 2019-03-05 | 2019-05-17 | 西安交通大学 | A kind of high toothed member multi-pass of canine tooth squeezes rolling die and method simultaneously |
| CN110052780A (en) * | 2019-04-25 | 2019-07-26 | 溧阳市振大铁路设备有限公司 | A kind of motor train unit bogie anti-side rolling torsion rod axis surface rolling technique |
| CN116079412A (en) * | 2023-03-23 | 2023-05-09 | 杭州恒盛紧固件有限公司 | Screw processing is with rolling thread cutting off all-in-one of being convenient for adjust |
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| JPS5897453A (en) * | 1981-12-03 | 1983-06-09 | Satake Tekko Kk | Manufacture of separator for concrete frame |
| CN2068868U (en) * | 1990-01-24 | 1991-01-09 | 尹若新 | Threading roller |
| DE202005007430U1 (en) * | 2005-05-06 | 2005-09-15 | Glimpel Emuge Werk | Thread rolling device, comprising several individually rotating drums attached to head of tool |
| CN102658319A (en) * | 2011-12-16 | 2012-09-12 | 西安交通大学 | Four-die ultrasonic incremental extruding rolling compound molding apparatus for spline, and technology thereof |
| CN102814434A (en) * | 2012-08-24 | 2012-12-12 | 西安交通大学 | Method for axially feeding, extruding, rolling and forming spline shaft by medium-frequency and high-frequency sensing heating |
| CN103008511A (en) * | 2012-12-11 | 2013-04-03 | 西安交通大学 | Method and process for performing medium-high frequency inductive heating and vibration compound rolling of spline shaft |
| CN103084521A (en) * | 2013-01-29 | 2013-05-08 | 西安交通大学 | Method for simultaneous roll-forming of threads and splines of shaft parts |
-
2014
- 2014-01-10 CN CN201410012625.XA patent/CN103752741B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5897453A (en) * | 1981-12-03 | 1983-06-09 | Satake Tekko Kk | Manufacture of separator for concrete frame |
| CN2068868U (en) * | 1990-01-24 | 1991-01-09 | 尹若新 | Threading roller |
| DE202005007430U1 (en) * | 2005-05-06 | 2005-09-15 | Glimpel Emuge Werk | Thread rolling device, comprising several individually rotating drums attached to head of tool |
| CN102658319A (en) * | 2011-12-16 | 2012-09-12 | 西安交通大学 | Four-die ultrasonic incremental extruding rolling compound molding apparatus for spline, and technology thereof |
| CN102814434A (en) * | 2012-08-24 | 2012-12-12 | 西安交通大学 | Method for axially feeding, extruding, rolling and forming spline shaft by medium-frequency and high-frequency sensing heating |
| CN103008511A (en) * | 2012-12-11 | 2013-04-03 | 西安交通大学 | Method and process for performing medium-high frequency inductive heating and vibration compound rolling of spline shaft |
| CN103084521A (en) * | 2013-01-29 | 2013-05-08 | 西安交通大学 | Method for simultaneous roll-forming of threads and splines of shaft parts |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105363977A (en) * | 2015-12-03 | 2016-03-02 | 朱蔓茹 | Valve rod thread rolling machine |
| CN109759528A (en) * | 2019-03-05 | 2019-05-17 | 西安交通大学 | A kind of high toothed member multi-pass of canine tooth squeezes rolling die and method simultaneously |
| CN109759528B (en) * | 2019-03-05 | 2020-09-15 | 西安交通大学 | Multi-pass simultaneous extrusion rolling die and method for large-tooth high-tooth part |
| CN110052780A (en) * | 2019-04-25 | 2019-07-26 | 溧阳市振大铁路设备有限公司 | A kind of motor train unit bogie anti-side rolling torsion rod axis surface rolling technique |
| CN116079412A (en) * | 2023-03-23 | 2023-05-09 | 杭州恒盛紧固件有限公司 | Screw processing is with rolling thread cutting off all-in-one of being convenient for adjust |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103752741B (en) | 2015-10-21 |
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