CN2308460Y - Screw rolling tool for working anti-loosening bolt - Google Patents

Abstract

The utility model provides a screw thread rolling tool for processing an anti-loosening screw bolt, wherein a slope is arranged at one side of the tooth top of the screw thread, both ends of the slope are respectively positioned on the tooth middle line and the tooth top line of an original standard screw thread, the distance between both end points at the direction parallel to the tooth midline line of the original standard screw thread is equal to the half of the thread pitch of the screw thread and the distance is equal to the half of the adjacent tooth pitches of the rolling tool at the same direction. The position of the one end point of the slope and the tooth top line of the rolling tool are respectively the top pressing line and the tooth midline of the standard screw thread. The utility model can roll an anti-loosening screw bolt. The positions of the tooth top line and the tooth midline line of the utility model are same to that of the standard rolling tool. The utility model has the advantages of simple structure, and convenient design, manufacture and test.

Description

The thread rolling tool that the processing check bolt is used

The utility model relates to a kind of thread rolling tool, especially a kind ofly processes the thread rolling tool that check bolt is used.

Present widely used thread rolling tool is standard cylindrical die roll and screw plate, and its tooth form is a standard, is that to be used for processing criterion externally threaded.Standard thread is loosening easily when machinery is vibrative.Now design a kind of check bolt, promptly establish an inclined-plane on the face of carrying one side of the ridge of bolt, the two ends on this inclined-plane lay respectively on the middle line and little radial line of primary standard screw thread, and two-end-point equals thread pitch half in the distance of bolt axis direction.On the little radial line of standard thread, the tooth bottom width degree of screw thread is less than the tooth bottom width of standard thread at the bottom of the tooth of screw thread.When the numerical value of the Major Diam of the angle that is positioned at the side that is equivalent to this screw thread more than the primary standard pitch diameter of thread position and this screw thread connects with the nut of standard thread with the bolt when this screw thread, do not collide and hinder to screw and be as the criterion with the screw thread of nut.This check bolt, because establishing an inclined-plane on the loading end of ridge both can guarantee reliable anti-loosening property, simultaneously because screw thread is standard value in the position in the middle footpath of path and primary standard screw thread (two end points on described inclined-plane), then design, make and detect all and be easy to, for the user provides convenience.

Can not make above-mentioned check bolt easily with existing screwing tool.

The purpose of this utility model is to improve the deficiencies in the prior art, provides a kind of rolling described simple in structure, and anti-loosening property is reliable, the thread rolling tool that design, manufacturing and check bolt easy to detect are used.

The purpose of this utility model is achieved in that in a side of thread rolling tool thread crest establishes an inclined-plane, the two ends on this inclined-plane lay respectively on the tooth midline and crest line of primary standard screw thread, and two-end-point equals thread pitch half in the distance of the direction of the tooth midline that is parallel to the primary standard screw thread.That is equal half of the phase adjacent teeth spacing of rolling tools on equidirectional, and the position of one of this rolling tools crest line and described inclined-plane end points is respectively the crest line and the tooth midline of standard thread, the crest width of screw thread is wide less than the crest of standard thread.The angle of the side of this instrument tooth that tooth midline is following and the position of tooth bottom line join when separating not overslaugh with the check bolt made with this instrument and standard nut and screw and be as the criterion.

The thread rolling tool that the processing check bolt that the utility model provides is used because its tooth form is according to the alveolus shaped design of check bolt, therefore can roll out check bolt.The crest line of this instrument and the position of tooth midline are identical with the rolling tools of standard, make the simple in structure of this instrument, design, make and detect all very convenient.

The utility model is described in further detail below in conjunction with accompanying drawing

Fig. 1: the helicitic texture schematic diagram of the thread rolling tool (comprising cylindrical die roll and screw plate) that the utility model processing check bolt is used

Fig. 2: the master of the cylindrical die roll that the processing check bolt is used analyses and observe and partial enlarged drawing

The side view of Fig. 3: Fig. 2

Fig. 4: the front view of the screw plate that the processing check bolt is used

The upward view of Fig. 5: Fig. 4

Embodiment

The form of thread structure of the thread rolling tool 1 that the processing check bolt is used as shown in Figure 1, side 1-1 is a standard thread, establish an inclined-plane 1-2 on the another side of this instrument ridge, the end points 1-2-1 of inclined-plane 1-2 is positioned at symmetry axis 3 intersections of crest line and primary standard rolling tools ridge, its another end points 1-2-2 is positioned at symmetry axis 2 intersections of tooth midline 5 with the primary standard rolling tools screw thread alveolus of primary standard rolling tools ridge, between end points 1-2-1 and the end points 1-2-2 promptly is half of pitch like this in the distance of the tooth midline direction of rolling the instrument screw thread along primary standard.The following tooth side 1-3 at the bottom of tooth of end points 1-2-2 is parallel with the tooth side of primary standard rolling tools screw thread, and the middle of the position of tooth bottom line 6 between tooth midline 5 and primary standard rolling tools tooth bottom line is promptly low than tooth midline 5 P, P are the tooth spacing, also are the pitch of check bolt.The position of the side 1-1 of crest line, tooth midline and the tooth of described rolling tools is with the respective threaded tooth form of standard thread rolling tools.

Thread rolling tool can be a cylindrical die roll 7, shown in Fig. 2,3, also can be screw plate 8, shown in Fig. 4,5.

Claims (3)

1, a kind ofly processes the thread rolling tool that check bolt is used, it is characterized in that: the side in the thread rolling tool thread crest is established an inclined-plane, the two ends on this inclined-plane lay respectively on the tooth midline and crest line of primary standard screw thread, and two-end-point equals thread pitch half in the distance of the direction of the tooth midline that is parallel to the primary standard screw thread.That is equal half of the phase adjacent teeth spacing of rolling tools on equidirectional, and the position of one of this rolling tools crest line and described inclined-plane end points is respectively the crest line and the tooth midline of standard thread, the crest width of screw thread is wide less than the crest of standard thread.

2, the thread rolling tool used of processing check bolt according to claim 1, it is characterized in that: the end points on the crest line on described inclined-plane drops on the symmetry axis of standard rolling tools ridge, drops at the end points on the tooth midline on the symmetry axis of standard rolling tools screw thread alveolus.

3, the thread rolling tool used of processing check bolt according to claim 2, it is characterized in that: described tooth bottom line is positioned under tooth midline

The P distance.

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