阅读说明：本技术 高强度螺栓防滑防脱螺纹组合搓丝装置及搓丝工艺 (High-strength bolt anti-skid and anti-drop thread combined thread rolling device and thread rolling process ) 是由 孙德明 于 2020-12-25 设计创作，主要内容包括：本发明公开了一种高强度螺栓防滑防脱螺纹组合搓丝装置,包括毛坯件输送装置、设置在所述毛坯件输送装置的出料端的送料装置、组合搓丝机构,所述组合搓丝机构包括固定设置的第一搓丝件和活动设置的第二搓丝件,所述第一搓丝件和第二搓丝件之间间隙形成搓丝通道,所述第一搓丝件和第二搓丝件相对面的上部设置有用以搓出防滑环的搓槽,所述搓槽的下部设置有用以搓出螺纹的搓丝面。本发明还公开了一种高强度螺栓防滑防脱螺纹组合搓丝工艺。(The invention discloses a high-strength bolt anti-skid and anti-thread-off combined thread rolling device which comprises a blank conveying device, a feeding device and a combined thread rolling mechanism, wherein the feeding device is arranged at the discharge end of the blank conveying device, the combined thread rolling mechanism comprises a first thread rolling piece and a second thread rolling piece, the first thread rolling piece and the second thread rolling piece are fixedly arranged, the second thread rolling piece is movably arranged, a thread rolling channel is formed in a gap between the first thread rolling piece and the second thread rolling piece, a thread rolling groove used for rolling out an anti-slip ring is formed in the upper part of the opposite surface of the first thread rolling piece and the second thread rolling piece, and a thread rolling surface used for rolling out threads is arranged at the lower part of the thread rolling groove. The invention also discloses an anti-skid and anti-drop thread combined thread rolling process for the high-strength bolt.)

1. The high-strength bolt anti-skid and anti-falling thread combined thread rolling device is characterized by comprising a blank conveying device, a feeding device and a combined thread rolling mechanism, wherein the feeding device is arranged at the discharge end of the blank conveying device, the combined thread rolling mechanism comprises a first thread rolling piece and a second thread rolling piece, the first thread rolling piece and the second thread rolling piece are fixedly arranged, the second thread rolling piece is movably arranged, a thread rolling channel is formed in a gap between the first thread rolling piece and the second thread rolling piece, a thread rolling groove used for rolling out an anti-slip ring is formed in the upper portion of the opposite surface of the first thread rolling piece and the second thread rolling piece, and a thread rolling surface used for rolling out threads is arranged at the lower portion of the thread rolling groove.

2. The high-strength bolt anti-slip and anti-off thread combined thread rolling device according to claim 1, wherein the first thread rolling element and the second thread rolling element comprise thread rolling plates having thread rolling surfaces, extrusion protrusions are arranged at tops of the thread rolling surfaces, the thread rolling grooves are formed between the topmost thread of the thread rolling surfaces and the extrusion protrusions, and the thread rolling surfaces are closer to the plain shaft section of the blank member than the extrusion protrusions.

3. The high-strength bolt anti-slip and anti-drop thread combined thread rolling device as claimed in claim 2, wherein a connecting plate is arranged at the top of the thread rolling plate, and the extruding protrusion is arranged at one side of the connecting plate.

4. The high-strength bolt anti-slip and anti-drop thread combined thread rolling device according to claim 3, wherein a trapezoidal groove is formed in the top of the thread rolling plate, and the connecting plate is fixed to the trapezoidal groove through a bolt.

5. The anti-slip and anti-drop thread combined thread rolling device for the high-strength bolt according to claim 1, wherein the second thread rolling element is connected with a movable block, and the movable block is connected with the first driving device.

6. The high-strength bolt anti-slip thread-off-preventing combined thread rolling device according to claim 1, wherein the blank conveying device comprises a vibration disc and a conveying channel connected with the vibration disc.

7. The high-strength bolt anti-slip and anti-drop thread combination thread rolling device as claimed in claim 1, wherein the feeding device comprises a feeding plate and a second driving device for driving the feeding plate to move.

8. The anti-skid and anti-drop thread combined thread rolling process for the high-strength bolt is characterized in that the anti-skid and anti-drop thread combined thread rolling device for the high-strength bolt, which is disclosed by any one of claims 1 to 7, is utilized, and comprises the following steps:

1) putting the blank into a blank conveying device;

2) the feeding device feeds the blanks at the discharge end of the blank conveying device into the inlet of the thread rolling channel;

3) the second thread rolling piece moves along the direction parallel to the first thread rolling piece, and the first thread rolling piece and the second thread rolling piece roll the anti-slip ring and the threads on the blank simultaneously when moving relatively.

Technical Field

The invention relates to the technical field of automobile part processing, in particular to a high-strength bolt anti-skid and anti-falling thread combined thread rolling device and a thread rolling process.

Background

In the automobile manufacturing industry, reference is now made to a high-strength bolt 10 shown in fig. 1 to 7 for being connected with a sheet metal part 21, an extruded material 22, a connecting shaft fitting 23 and a nut 24. The blank piece of the high-strength bolt 10 comprises a bolt head 11, a limit point 12 at the bottom of the bolt head, an optical axis section 13 and a reducing section 14. The traditional processing technology is relatively complex, firstly the anti-slip ring 15 is turned out by a numerical control lathe, and then thread rolling is carried out by a thread rolling machine to obtain the threads 16. However, the traditional process needs two working procedures and has the defects that: the repair processing wastes working hours, increases the cost, has low efficiency, long production period, large size fluctuation and poor quality stability.

Disclosure of Invention

The invention aims to provide a high-strength bolt anti-skid and anti-drop thread combined thread rolling device and a thread rolling process aiming at the defects of the prior art so as to solve the problems.

The technical problem solved by the invention can be realized by adopting the following technical scheme:

the high-strength bolt anti-skid thread-disengagement-prevention combined thread rolling device comprises a blank conveying device, a feeding device and a combined thread rolling mechanism, wherein the feeding device is arranged at the discharge end of the blank conveying device, the combined thread rolling mechanism comprises a first thread rolling part and a second thread rolling part, the first thread rolling part and the second thread rolling part are fixedly arranged, the second thread rolling part is movably arranged, a thread rolling channel is formed in a gap between the first thread rolling part and the second thread rolling part, a thread rolling groove used for rolling out an anti-slip ring is formed in the upper portion of the opposite surface of the first thread rolling part and the second thread rolling part, and a thread rolling surface used for rolling out threads is arranged at the lower portion of the thread rolling groove.

In a preferred embodiment of the invention, the first and second thread rolling elements comprise thread rolling plates having thread rolling surfaces, the tops of the thread rolling surfaces are provided with extrusion bosses, the thread rolling surfaces are closer to the plain shaft section of the blank member than the extrusion bosses, and the thread rolling grooves are formed between the topmost thread of the thread rolling surfaces and the extrusion bosses.

In a preferred embodiment of the invention, a connecting plate is arranged on the top of the screw plate, and the extrusion boss is arranged on one side of the connecting plate.

In a preferred embodiment of the invention, the top of the screw plate is provided with a trapezoidal groove, and the connecting plate is fixed on the trapezoidal groove through bolts.

In a preferred embodiment of the present invention, the second thread rolling element is connected to a movable block, and the movable block is connected to the first driving device.

In a preferred embodiment of the invention, the blank transport device comprises a vibration plate and a transport channel connected to the vibration plate.

In a preferred embodiment of the invention, the feeding device comprises a feeding plate and a second driving device for driving the feeding plate to move.

The anti-skid and anti-falling thread combined thread rolling process for the high-strength bolt utilizes the anti-skid and anti-falling thread combined thread rolling device for the high-strength bolt according to any one of the technical schemes, and comprises the following steps:

1) putting the blank into a blank conveying device;

2) the feeding device feeds the blanks at the discharge end of the blank conveying device into the inlet of the thread rolling channel;

3) the second thread rolling piece moves along the direction parallel to the first thread rolling piece, and the first thread rolling piece and the second thread rolling piece roll the anti-slip ring and the threads on the blank simultaneously when moving relatively.

Due to the adoption of the technical scheme, the device has a simple structure, the function of simultaneously twisting the grooves is added, half of the process time is reduced, the efficiency is improved, and the precision of parts can be greatly improved by one-step molding compared with two-step molding. In addition, the groove can improve the mechanical property of the part, the cold working hardening of the metal after cold extrusion and the reasonable fiber streamline distribution in the part, so that the strength of the part is far higher than that of the raw material. The reasonable cold extrusion process can form the pressure stress on the surface of the part to improve the fatigue strength. Therefore, after the cold extrusion process is used for some parts which are originally strengthened by heat treatment, the heat treatment process can be saved, some parts need to be manufactured by high-strength steel, and the parts can be replaced by lower-strength steel after the cold extrusion process.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a diagram showing a state of use of a conventional high-strength bolt.

Fig. 2 is a schematic view of a blank member of a conventional high-strength bolt.

Fig. 3 is a front view of fig. 2.

Fig. 4 is a left side view of fig. 3.

Fig. 5 is a schematic view of a blank member of a conventional high-strength bolt.

Fig. 6 is a front view of fig. 5.

Fig. 7 is a left side view of fig. 6.

FIG. 8 is a top view of the anti-slip thread-off prevention combined thread rolling device for the high-strength bolt of the invention.

Fig. 9 is a perspective view of fig. 8.

Fig. 10 is a schematic view of a structure of a first thread rolling member (or a second thread rolling member) of the present invention.

Fig. 11 is a front view of fig. 10.

Fig. 12 is a side view of fig. 11.

Fig. 13 is an enlarged view of fig. 12 at a.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below.

Referring to fig. 8 to 13, the high-strength bolt anti-slip thread-off-preventing combined thread rolling device includes a blank conveying device 100, a feeding device 200 disposed at a discharge end of the blank conveying device 100, and a combined thread rolling mechanism 300.

The blank transport device 100 includes a vibration plate 110 and a transfer passage 120 connected to the vibration plate 110.

The feeding device 200 includes a feeding plate 210 and a second driving device 220 for driving the feeding plate 210 to move, and the second driving device 220 may be a linear motor or an air cylinder.

The combined thread rolling mechanism 300 comprises a first thread rolling element 310 and a second thread rolling element 320, wherein the first thread rolling element 310 and the second thread rolling element 320 are fixedly arranged, and a thread rolling channel 340 is formed between the first thread rolling element 310 and the second thread rolling element 320 in a clearance mode. The upper portion of the opposite surfaces of the first thread rolling member 310 and the second thread rolling member 320 is provided with a thread rolling groove for rolling out the anti-slip ring, and the lower portion of the thread rolling groove is provided with a thread rolling surface for rolling out the thread. In this embodiment, the first thread rolling member 310 and the second thread rolling member 320 include a thread rolling plate 331 having a thread rolling surface 332, a pressing protrusion 333 is provided on the top of the thread rolling surface 332, a thread rolling groove 334 is formed between the topmost thread of the thread rolling surface 332 and the pressing protrusion 333, and the thread rolling surface 332 is closer to the optical axis section of the blank member than the pressing protrusion 333. A connection plate 335 is provided on the top of the thread rolling plate 331, and a pressing protrusion 333 is provided on one side of the connection plate 335. In order to conveniently arrange the connection plate 335, a trapezoidal groove 336 is formed at the top of the thread rolling plate 331, and the connection plate 335 is fixed to the trapezoidal groove 336 by a bolt 337. The trapezoidal groove 336 may be configured to allow the coupling plate 335 to withstand a groove twisting force.

For convenience of arrangement, the first thread rolling element 310 is connected with the fixed block 410, the second thread rolling element 320 is connected with a movable block 420, the movable block 420 is connected with a first driving device 430, and the first driving device 430 may be a linear motor or an air cylinder.

The anti-skid and anti-falling thread combined thread rolling process for the high-strength bolt utilizes the anti-skid and anti-falling thread combined thread rolling device for the high-strength bolt, and comprises the following steps:

1) the blank 1 is put into the blank conveying device 100;

2) the feeding device 200 feeds the blank 1 at the discharge end of the blank conveying device 100 into the inlet of the thread rolling channel 340;

3) the second thread rolling member 320 moves in a direction parallel to the first thread rolling member 310, and the first thread rolling member 320 and the second thread rolling member 310 simultaneously roll the slip prevention ring and the thread on the blank 1 while relatively moving.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.