CN215697644U

CN215697644U - Through-rolling type thread rolling wheel with feeding area gradually changed R tooth tops

Info

Publication number: CN215697644U
Application number: CN202121879811.5U
Authority: CN
Inventors: 陈磊; 吴剑君; 郁国飞; 董磊
Original assignee: Zhejiang Zhongyuan Wanying Thread Technology Co ltd
Current assignee: Zhejiang Wanying Henghui Thread Technology Co ltd
Priority date: 2021-08-11
Filing date: 2021-08-11
Publication date: 2022-02-01
Anticipated expiration: 2031-08-11

Abstract

The application relates to a through-rolling type thread rolling wheel with a feeding area and a gradually-changed R tooth crest, and belongs to the technical field of thread rolling machines. It includes the body, the body periphery wall includes feeding district, processing district and material returned district along length direction, the processing district is provided with the tapered standard screw thread of taking, the feeding district is provided with the gradual change screw thread, the gradual change screw thread along the feeding district to the radius of the direction addendum of processing district spiral dwindle gradually until with standard screw thread addendum radius is unanimous. The screw thread that this application had thread rolling wheel feed area is difficult for collapsing the effect of tooth.

Description

Through-rolling type thread rolling wheel with feeding area gradually changed R tooth tops

Technical Field

The application relates to the field of thread rolling machines, in particular to a through-rolling thread rolling wheel with a feeding area gradually changing R tooth tops.

Background

The thread rolling wheel is a tool for rolling threads on a thread rolling machine by using a metal plastic deformation method. The method is suitable for processing high-strength bolts.

The conventional thread rolling wheel is shown in the attached drawing 1 and comprises a body 1, wherein the peripheral wall of the body is a cylindrical surface, the peripheral wall of the body comprises a feeding area 11, a processing area 12 and a material returning area 13 along the length direction, and the feeding area 11 and the processing area 12 are both provided with tapered standard threads 2.

In view of the above-mentioned related art, the inventor believes that such a thread rolling die may easily collide with the thread on the thread rolling die due to a deviation in position between the workpiece and the thread rolling die when the workpiece initially enters the feeding zone, and the thread of the thread rolling die is likely to have teeth breakage upon collision, which affects the life of the thread rolling die.

SUMMERY OF THE UTILITY MODEL

In order to reduce the situation that standard threads in a feeding area of a thread rolling wheel are easy to break, the application provides a through-rolling thread rolling wheel with a feeding area gradually changing R tooth tops.

The application provides a logical rolling thread rolling wheel of feeding zone gradual change R addendum adopts following technical scheme:

the utility model provides a logical roll formula thread rolling wheel of feeding zone gradual change R tooth top, includes the body, the body periphery wall includes feeding zone, processing district and material returned district along length direction, processing district is provided with tapered standard screw, feeding zone is provided with gradual change screw, gradual change screw along feeding zone to the radius of the direction tooth top of processing district spiral reduce gradually until with standard screw tooth top radius is unanimous.

Through adopting above-mentioned technical scheme, through the radius that increases the gradual change screw thread addendum of feeding zone, along feeding zone to machining district direction, the radius of gradual change screw thread addendum reduces the radius to standard screw thread addendum gradually to the screw on work piece surface is processed gradually, reduces the possibility that the screw thread bursts apart, increases the life of thread rolling wheel, improves the smooth finish and the tensile strength of work piece.

Optionally, the tip circle diameter of the tapered thread gradually increases along the direction from the feeding zone to the machining zone until the tip circle diameter of the tapered thread coincides with the tip circle diameter of the standard thread.

Through adopting above-mentioned technical scheme for during the processing of work piece, the interval between two bodies reduces to the processing district direction along the feeding district gradually, plays a direction feeding effect, further reduces the possibility that the screw thread bursts apart on the body.

Optionally, the diameter of the root circle of the gradual-change thread gradually increases along the direction from the feeding area to the machining area until the diameter of the root circle of the gradual-change thread is consistent with the diameter of the root circle of the standard thread.

Through adopting above-mentioned technical scheme for during the work piece adds man-hour, the interval between two bodies reduces to the processing district direction along the feeding district gradually, plays a direction feeding effect, further reduces the possibility that the screw thread bursts apart on the body, has kept the tooth height of deformation screw thread simultaneously, keeps the machining capacity of deformation screw thread.

Optionally, a feeding outward-expanding surface is arranged on the outer wall of one side, away from the processing area, of the feeding area, and the outer diameter of the feeding outward-expanding surface is gradually reduced from one side, close to the processing area, to the side, away from the processing area.

Through adopting above-mentioned technical scheme, expand the face outward through setting up the feeding for the work piece adds man-hour between getting into the thread rolling wheel, and is more convenient and smooth, and the face that expands outward of feeding plays certain guide effect, and the work piece that gets into is leading-in between two thread rolling wheels.

Optionally, a fillet is formed at the junction of the feeding outward-expanding surface and the end face of the body.

By adopting the technical scheme, the chamfer angle is formed, so that the workpiece is not easy to damage when being touched with the thread rolling wheel, and the contact surface is more round and smooth.

Optionally, a discharging area without standard threads is reserved on one side, away from the machining area, of the material returning area.

By adopting the technical scheme, the pressure of the hydraulic system of the thread rolling machine is very high during thread rolling processing, and after the discharging area is manufactured at the edge of the thread rolling wheel, the teeth at the most edge of the thread rolling wheel are not easy to crack.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the radius of the tooth top of the gradual change thread of the feeding area is increased, and the radius of the tooth top of the gradual change thread is gradually reduced to the radius of the tooth top of the standard thread along the direction from the feeding area to the processing area, so that the thread on the surface of a workpiece is gradually processed, the possibility of thread cracking is reduced, the service life of the thread rolling wheel is prolonged, and the finish and the tensile strength of the workpiece are improved;

2. the root circle diameter and the addendum circle diameter of the gradually-changed thread are gradually increased along the direction from the feeding area to the processing area, so that when a workpiece is processed, the distance between the two bodies is gradually reduced along the direction from the feeding area to the processing area, a guiding feeding effect is achieved, the possibility of thread cracking on the bodies is further reduced, the tooth height of the deformed thread is kept, and the processing capacity of the deformed thread is kept;

3. through setting up the feeding and expanding the face outward for the work piece adds man-hour between getting into the thread rolling wheel, it is more convenient and smooth, the feeding expands the face outward and plays certain guide effect, between leading-in two thread rolling wheels of the work piece that gets into, the radius angle of seting up, when making touching between work piece and the thread rolling wheel, be difficult to impaired, the contact surface is more mellow and more, during thread rolling add man-hour, thread rolling machine hydraulic system's pressure is very big, set up the regional back of ejection of compact at the thread rolling wheel edge, make the most marginal tooth of thread rolling wheel be difficult to crack.

Drawings

FIG. 1 is a schematic illustration of a prior art thread roller during processing;

FIG. 2 is a schematic view of a die roll in an embodiment of the present application during machining;

FIG. 3 is a schematic structural view of a feed zone in an example of the present application.

Description of reference numerals: 1. a body; 11. a feed zone; 12. a processing zone; 13. a material returning area; 14. feeding an outward-expanding surface; 15. round corners; 16. a discharge area; 2. standard threads; 3. and (4) gradually changing the thread.

Detailed Description

The present application is described in further detail below with reference to figures 2-3.

The embodiment of the application discloses a through-rolling type thread rolling wheel with a feeding area and a gradually-changed R tooth crest.

Referring to fig. 2 and 3, the through-rolling type thread rolling wheel with the feeding area gradually changed with the R tooth top comprises a body 1, wherein the body 1 is a cylinder provided with a coaxial through hole, and the peripheral wall of the body 1 comprises a feeding area 11, a processing area 12 and a material returning area 13 along the length direction.

Referring to fig. 2 and 3, the machining area 12 and the material returning area 13 are both spirally machined with tapered standard threads 2, the feeding area 11 is bolted with tapered threads 3, the tapered threads 3 are connected with the standard threads 2, and the radius of the tapered threads 3 along the spiral tooth tops from the feeding area 11 to the machining area 12 is gradually reduced until the radius of the tooth tops of the standard threads 2 is consistent.

Referring to fig. 2 and 3, the outside diameter of the feed zone 11 gradually increases from the end far from the processing zone 12 toward the processing zone 12, so that the outer peripheral wall of the feed zone 11 is a circular table, and the tip circle diameter and the root circle diameter of the tapered thread 3 gradually increase along the direction from the feed zone 11 to the processing zone 12 until they coincide with the tip circle diameter of the gauge thread 2.

Referring to fig. 2 and 3, a feeding flared surface 14 is arranged on the outer wall of the feeding area 11 on the side far away from the processing area 12, the outer diameter of the feeding flared surface 14 gradually decreases from the side close to the processing area 12 to the side far away from the processing area 12, and a rounded corner 15 is formed at the junction of the feeding flared surface 14 and the end face of the body 1.

Referring to fig. 2, a discharging area 16 without the standard thread 2 is reserved on the side of the material returning area 13 away from the processing area 12, and the outer diameter of the discharging area 16 may be uniform or gradually reduced in a direction from the side close to the processing area 12 to the side away from the processing area 12.

The implementation principle of the through-rolling type thread rolling wheel with the feeding area gradually changing R tooth tops is as follows: the two thread rolling wheels are used for processing surface threads of a workpiece, the workpiece passes through the two thread rolling wheels, the two thread rolling wheels rotate to extrude the surface of the workpiece, the thread is firstly preliminarily processed by the progressive gear, and then the thread is further processed by the standard gear.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a feed zone gradual change R addendum leads to rolling die roll which characterized in that: including body (1), body (1) periphery wall includes feeding zone (11), processing district (12) and material returned district (13) along length direction, processing district (12) are provided with tapered standard screw thread (2), feeding zone (11) are provided with gradual change screw thread (3), gradual change screw thread (3) along feeding zone (11) to the radius of the direction top of processing district (12) spiral reduce gradually until with standard screw thread (2) top radius is unanimous.

2. The feed-zone progressive R-crest through-roll thread roller according to claim 1, wherein: the diameter of the addendum circle of the gradual-change thread (3) is gradually increased along the direction from the feeding area (11) to the processing area (12) until the diameter of the addendum circle of the gradual-change thread is consistent with that of the standard thread (2).

3. The feed-zone progressive R-crest through-roll thread roller according to claim 2, wherein: the diameter of the root circle of the gradual change thread (3) is gradually increased along the direction from the feeding area (11) to the processing area (12) until the diameter of the root circle of the gradual change thread is consistent with that of the standard thread (2).

4. The feed-zone progressive R-crest through-roll thread roller according to claim 1, wherein: the outer wall of one side, far away from the processing area (12), of the feeding area (11) is provided with a feeding outward-expanding surface (14), and the outer diameter of the feeding outward-expanding surface (14) is gradually reduced from one side close to the processing area (12) to one side far away from the processing area (12).

5. The feed-zone progressive R-crest through-roll thread roller according to claim 4, wherein: the junction of the feeding outward-expanding surface (14) and the end surface of the body (1) is provided with a fillet (15).

6. The feed-zone progressive R-crest through-roll thread roller according to claim 1, wherein: and a discharging area (16) without standard threads (2) is reserved on one side of the material returning area (13) far away from the processing area (12).