阅读说明：本技术 一种螺纹线圈及其制作方法 (A kind of helical coil and preparation method thereof ) 是由 彭德平 万步炎 金永平 王旺甫 高振宇 刘鸿坤 陈佳 于 2019-09-17 设计创作，主要内容包括：本发明公开了一种螺纹线圈及其制作方法,该螺纹线圈起始端的线缆平行于该螺纹线圈本体的横截面；该螺纹线圈终止端的线缆垂直于该螺纹线圈本体的横截面。本发明可以减少轴类螺纹与螺纹过渡区在交变弯曲应力作用下的疲劳失效,可使螺纹轴向力平均分配,有效延长了轴类部件的使用寿命。(The invention discloses a kind of helical coil and preparation method thereof, the cable of the helical coil starting point is parallel to the cross section of the helical coil ontology；Cross section of the cable of the helical coil clearing end perpendicular to the helical coil ontology.The present invention can reduce the fatigue failure of axis class screw thread and screw thread transition region under alternating bending stress effect, can make screw thread axial force mean allocation, effectively extend the service life of Axle Parts.)

1. a kind of helical coil, which is characterized in that the cable of the helical coil starting point is parallel to the cross of the helical coil ontology Section；Cross section of the cable of the helical coil clearing end perpendicular to the helical coil ontology；The starting point of the helical coil, sheet Body, termination end surfaces are respectively provided with electroplated layer.

2. helical coil according to claim 1, which is characterized in that the ontology is wound on thread spindle.

3. helical coil according to claim 2, which is characterized in that the cable of the starting point and described thread spindle one end Face contact is simultaneously fixedly connected；The cable of the clearing end and face contact on the outside of the thread spindle other end are simultaneously fixedly connected, and should The cable of clearing end is parallel to the thread spindle axis.

4. helical coil described according to claim 1~one of 3, which is characterized in that the cable use diameter forOrAustenite stainless steel wire rod.

5. helical coil according to claim 4, which is characterized in that the diameter tolerance of the austenite stainless steel wire rod is ±0.01mm。

6. the production method of helical coil described in a kind of one of Claims 1 to 5, which comprises the following steps:

1) austenite stainless steel wire rod is heated to 1080 DEG C~1120 DEG C, be then rapidly cooled to room temperature；

2) Shot Blasting is carried out to through step 1) treated austenite stainless steel wire rod；

3) helical coil coil device is clamped at numerical control lathe collet, the austenite stainless steel wire rod starting point after Shot Blasting It is fixed in coil device starting clamping position, turns numerical control lathe to low or first gear, along coil device pitch of the laps under 500~700N tension Station carries out wound clockwise；

4) austenite stainless steel wire rod is cut, is adjusted according to pitch of the laps tightness, connector will be terminated and be positioned at pitch of the laps dress It sets and terminates in clamping position；

5) helical coil after tool locating is put into togerther vacuum heat treatment furnace with coil device and carries out the blunt processing of low temperature burning.

7. the production method of helical coil according to claim 6, which is characterized in that after step 5), further includes:

6) Shot Blasting will be carried out using micro- glass ball is sprayed, to remove helical coil after setting treated helical coil disassembly Surface scale；

7) helical coil after shot peening strengthening is subjected to plating mould processing.

8. the production method of helical coil according to claim 6 or 7, which is characterized in that the coil device pitch of the laps work Position uses round thread form, and shading radius is consistent with austenitic stainless steel wire radius, shading spacing=austenite stainless steel wire Material diameter+1.25mm.

9. the production method of helical coil according to claim 7, which is characterized in that in step 6), also to the screw thread Coil both ends carry out cutting tack processing, then make starting point 10mm length laterally perpendicular to pitch of the laps direction, clearing end 10mm is vertical To perpendicular to pitch of the laps direction.

10. the production method of helical coil according to claim 7, which is characterized in that in step 7), after shot peening strengthening Helical coil surface carry out color zinc Passivation Treatment, and the plating thickness of electroplating surface is 15-20um.

Technical field

The present invention relates to a kind of main shaft connection screw thread technical field, especially a kind of helical coil and preparation method thereof.

Background technique

Threaded connection be it is a kind of it is widely used removably is fixedly connected, have structure is simple, connection reliably, assembly and disassembly side Just the advantages that.In the hydraulic press transmission system of high frequency task, the fatigue fracture of pull rod screw connection place is the failure of pull rod main shaft The main reason for.And the weakness of most stress main shafts or stress concentration portion position focus mostly at main shaft start screw threads, in master In axis loading process, it is easy to appear fatigue notch, leads to thread damage or fracture.And most of mainshaft nut is sometimes for frequent Disassembly, different degrees of damage can be also caused to pull rod screw and nut.

How on main shaft connection screw thread ontology setting subtracts stress structure to reduce the stress level at connection screw thread position, at For for those skilled in the art's urgent problem to be solved.

Summary of the invention

The technical problem to be solved by the present invention is in view of the shortcomings of the prior art, provide a kind of helical coil and its production Method makes screw thread axial force mean allocation, extends the service life of Axle Parts.

In order to solve the above technical problems, the technical scheme adopted by the invention is that: a kind of helical coil, the threaded line enclose The cable at beginning is parallel to the cross section of the helical coil ontology；The cable of the helical coil clearing end is perpendicular to the helical coil The cross section of ontology.

The ontology is wound on thread spindle.

The cable of the starting point and described thread spindle one end face contact are simultaneously fixedly connected；The cable of the clearing end and institute It states face contact on the outside of the thread spindle other end and is fixedly connected, and the cable of the clearing end is parallel to the thread spindle axis.

The cable use diameter forOrAustenite stainless steel wire rod.

The diameter tolerance of the austenite stainless steel wire rod is ± 0.01mm.

The present invention also provides a kind of production methods of above-mentioned helical coil comprising following steps:

1) austenite stainless steel wire rod is heated to 1080 DEG C~1120 DEG C, be then rapidly cooled to room temperature；

2) Shot Blasting is carried out to through step 1) treated austenite stainless steel wire rod；

3) helical coil coil device is clamped at numerical control lathe collet, the austenite stainless steel wire rod after Shot Blasting rises Beginning is fixed in coil device starting clamping position, turns numerical control lathe to low or first gear, at some tension (500~700N) Wound clockwise is carried out along coil device pitch of the laps station；

4) austenite stainless steel wire rod is cut, is adjusted according to pitch of the laps tightness, will terminate connector be positioned at around Coil apparatus terminates in clamping position；

5) helical coil after tool locating is put into togerther vacuum heat treatment furnace with coil device and carries out the blunt place of low temperature burning Reason (is heated to 300 DEG C~350 DEG C, keep after 2h~3h with furnace Slow cooling).

After step 5), further includes:

6) Shot Blasting will be carried out using micro- glass ball is sprayed, to remove screw thread after setting treated helical coil disassembly Coil surface oxide skin；

7) helical coil after shot peening strengthening is subjected to plating mould processing.

The coil device pitch of the laps station uses round thread form, shading radius and austenitic stainless steel wire radius one It causes, shading spacing=austenitic stainless steel gauge or diameter of wire+1.25mm.

In step 6), cutting tack processing also is carried out to the helical coil both ends, then makes starting point 10mm length horizontal To perpendicular to pitch of the laps direction, clearing end 10mm is longitudinally perpendicular in pitch of the laps direction.

In step 7), the helical coil surface after shot peening strengthening carries out color zinc Passivation Treatment, and the plating of electroplating surface Layer is with a thickness of 15-20um.

Compared with prior art, the advantageous effect of present invention is that:

1, the present invention can reduce the fatigue failure of axis class screw thread and screw thread transition region under alternating bending stress effect, can Make screw thread axial force mean allocation, effectively extends the service life of Axle Parts；

2, method manufacture craft science of the invention, excellent product quality rate obtained are high.

Detailed description of the invention

Fig. 1 is helical coil main view of the present invention；

Fig. 2 is helical coil perspective view one of the present invention；

Fig. 3 is helical coil perspective view two of the present invention；

Fig. 4 is that helical coil of the present invention is wound in the main view on thread spindle；

Fig. 5 is that helical coil of the present invention is wound in the rearview on thread spindle；

Fig. 6 is that helical coil of the present invention is wound in the perspective view on thread spindle；

Fig. 7 is the left view of Fig. 5；

Fig. 8 is helical coil pitch of the laps main view of the present invention；

Fig. 9 is the left view of Fig. 8；

Figure 10 is helical coil pitch of the laps perspective view of the present invention；

Figure 11 is

In figure: 1, helical coil originates angle of hanging down；2, helical coil ontology；3, helical coil terminates the straight angle；4, clamping is originated Position；5, clamping position is terminated；6, clamping station；7, pitch of the laps station；8, austenite stainless steel wire rod.

Specific embodiment

As shown in FIG. 1 to 3, the present invention includes that helical coil originates angle 1 of hanging down, helical coil ontology 2, helical coil termination The straight angle 3.

Helical coil originates angle of hanging down laterally perpendicular to pitch of the laps direction, plays helical coil and originates fixed function；

It is longitudinally perpendicular in pitch of the laps direction, helical coil termination fixed function that helical coil terminates the straight angle；

The pitch of the laps state of a constant pitch (pitch P=D+1.25mm, D are helical coil diameter) is presented in helical coil ontology, It interior can be threaded to match (see Fig. 4~Fig. 7) in conjunction with round thread nut on axis class round thread, reduce axis class screw thread and screw thread mistake Fatigue failure of the area under alternating bending stress effect is crossed, screw thread axial force mean allocation can be made, effectively extend Axle Parts Service life.

The production method of spiral winding of the present invention the following steps are included:

Step 1: selection, general selection diameter are(or) austenite stainless steel wire rod is as material, material Expect diameter tolerance control in ± 0.01mm；

Step 2: solution treatment, is heated to 1080~1120 DEG C for austenite stainless steel wire rod, is then quickly cooled to room Temperature dissolves various phases in alloy sufficiently, Intensive intervention body, and mentions wire rod high tenacity and etch resistant properties, eliminates stress and softening, To continue to process or to form.

Step 3: shot peening strengthening I, carries out Shot Blasting to STAINLESS STEEL WIRE using micro- glass ball is sprayed, to remove Surface Oxygen Change skin, improve fatigue strength, wearability and roughness.

Step 4: numerical control pitch of the laps, by helical coil coil device clamping position at numerical control lathe collet, austenitic stainless steel Wire rod starting point is fixed in coil device starting clamping position 4, turns numerical control lathe to low or first gear, in some tension along Wound clockwise is carried out in coil device pitch of the laps station.

Step 5: tool locating, helical coil numerical control pitch of the laps is completed, and austenite stainless steel wire rod is cut, according to pitch of the laps Tightness is adjusted, and will terminate connector and be positioned in coil device termination clamping position 5.

Step 6: setting is handled, the helical coil after tool locating is put into togerther vacuum heat treatment furnace with coil device It carries out low temperature and burns blunt processing, helical coil is made to reach dimensionally stable, hardness and the consistent purpose of rustless property.

Step 7: shot peening strengthening II, ball blast will be carried out using micro- glass ball is sprayed after setting treated helical coil disassembly Processing, to remove surface scale, improve fatigue strength, wearability and roughness.

Step 8: coating film treatment, carries out plating die treatment for the helical coil after shot peening strengthening.

Further, austenitic stainless steel is the high abrasion austenitic stainless steel containing chromium and nickel element.

Further, helical coil coil device pitch of the laps station 7 uses round thread form, round thread shading radius and Ovshinsky 8 radius of body STAINLESS STEEL WIRE is consistent, and shading spacing takes austenitic stainless steel gauge or diameter of wire D+1.25mm, round thread bottom diameter D₁According to Pitch of the laps shrinking percentage value is D₁=(0.7~0.9) D_{Spiral shell},D_{Spiral shell}For round thread internal diameter.

Further, after shot peening, helical coil both ends of the surface are ground, carry out 90 ° of vertical processing；

Further, plating mould is 15-20um using color zinc Passivation Treatment, the plating thickness of electroplating surface.Iris is blunt Change film than white chromating film thickness, and when iridescent passivation film surface is scratched, the passivation in humid air, near scratch site There is Cr VI in film carries out " being passivated again " effect to scratch site, has repaired damage, passivating film is made to restore complete.

Figure 11 is axial workpiece, matches schematic diagram between helical coil, nut, and threaded line encloses middle transition work With, it is possible to reduce the fatigue failure of axis class screw thread and screw thread transition region under alternating bending stress effect can make screw thread axial force Mean allocation effectively extends the service life of Axle Parts and nut.