CN205956161U

CN205956161U - T -shaped bolt

Info

Publication number: CN205956161U
Application number: CN201620974427.6U
Authority: CN
Inventors: 李占宇; 苏猛; 李洪; 马龙
Original assignee: Fifth Engineering Co Ltd of China Railway Construction Electrification Bureau Group Co Ltd
Current assignee: Fifth Engineering Co Ltd of China Railway Construction Electrification Bureau Group Co Ltd
Priority date: 2016-08-29
Filing date: 2016-08-29
Publication date: 2017-02-15
Anticipated expiration: 2026-08-29

Abstract

The utility model provides a T -shaped bolt, by having long limit (21), bolt seat (2) of minor face (22) and double -screw bolt (1) that is located on bolt seat (2) are constituteed, T -shaped bolt installs and be used for connecting the external component in T -slot (3), the position rigid coupling that is close to long limit (21) in minor face (22) of bolt seat (2) has the minor face of surpassing (22) planar protrusion (23), the radius distance of protrusion (23) and double -screw bolt (1) axis be greater than T -slot (3) end opening groove (31) width distance 12, T -shaped bolt can follow the optional position on T -slot upper portion and put into, rotatory about 90 degrees positions can not produce the rotation phenomenon of skidding when using the nut fastening, high durability and convenient use.

Description

A kind of tommyhead bolt

Technical field

The utility model is related to mechanical engineering field, more particularly, to a kind of tommyhead bolt, prevents from skidding during fastening.

Background technology

In mechanical engineering, it is frequently used tommyhead bolt cooperation T-slot and is used for fixed component, the such as lathe such as milling machine, drilling machine Work top be typically provided with T-slot, by T-slot setting tommyhead bolt fix the processing component on workbench, The afterbody of general tommyhead bolt is provided with bolt block, the general belt length of this bolt block, minor face.

The mode that tommyhead bolt puts into T-slot has two kinds, a kind of mode is to put into from T-slot end, wherein tommyhead bolt The width on bolt block one side is slightly smaller than the width of the lower mouth groove of T-slot, so that tommyhead bolt can only be slided in T-slot but will not beat Turn, also obtain during taking-up and take out from T-slot end, when T-slot is longer, tommyhead bolt takes out inconvenient；Another mode be from T-slot top optional position is put into, and wherein the width between the long side of bolt block is less than the width of T-slot groove suitable for reading, and bolt block Width between minor face is more than T-slot width suitable for reading, and less than mouth width under T-slot, tommyhead bolt puts into T-slot rotation about 90 Degree, a part for minor face width is stuck on the downside of the groove suitable for reading of T-slot, and tommyhead bolt can not take out, and the left and right rotation of tommyhead bolt is about Can be taken off after 90 degree, this mode tommyhead bolt is placed and taken out conveniently, but tommyhead bolt is easily produced when being fastened using nut It is conigenous and turns skidding, for avoiding skidding, need people to block tommyhead bolt using additive method, using inconvenience.

Referring to accompanying drawing 1, for avoiding skidding, the width between bolt block minor face is generally lengthened by people, so that tommyhead bolt is rotated After certain angle, its minor face is abutted with the lower mouth cell wall of T-slot, but this can bring two defects again, and the first lengthens between minor face Width can increased tommyhead bolt processing and manufacturing spillage of material, its two be lengthen minor face abut with the lower mouth cell wall of T-slot When the inclined position of T-shaped seat, decrease the contact area of minor face and groove lower wall suitable for reading, weaken the bonding strength of tommyhead bolt.

Utility model content

The technical problems to be solved in the utility model is to provide a kind of tommyhead bolt to put into from T-slot top, and rotates about 90 Degree position use nut fastening will not rotation skid a kind of tommyhead bolt.

For solving above-mentioned technical problem, a kind of tommyhead bolt of the present utility model, be employed technical scheme comprise that：Tommyhead bolt Formed by having long side, the bolt block of minor face and the stud being located on bolt block, tommyhead bolt is installed in T-slot (3) and is used for even Connect external member, be connected with protrusion, protrusion and stud shaft beyond minor face in the minor face of bolt block near the position on long side The radius distance of line is more than the 1/2 of the lower mouth well width distance of T-slot.

Further, protrusion uses spot welding to pile up, extruding or embedded technique processing method are molded.

Because the minor face in bolt block is connected with protrusion, protrusion and the spiral shell beyond minor face plane near the position on long side The radius distance of mast axis is more than the 1/2 of the lower mouth well width distance of T-slot, thus ensure that tommyhead bolt is put from T-slot top Enter and rotate about 90 degree of positions using during nut fastening, protrusion is connected on the side wall of lower mouth groove of T-slot, thoroughly prevents Because rotating friction force produces rotation skidding when tommyhead bolt uses nut to fasten, easy to use.

Protrusion uses spot welding to pile up, extruding or embedded technique processing method are molded, and process is simple, low cost Honest and clean.

Brief description

Accompanying drawing described herein is used for providing further understanding to of the present utility model, constitutes the part of the application, Schematic description and description of the present utility model is used for explaining the utility model, does not constitute to of the present utility model improper Limit.In the accompanying drawings：

Fig. 1 is that the general T-shaped bolt of prior art puts into, from T-slot top, the schematic diagram avoiding skidding；

Fig. 2 is the tommyhead bolt front view schematic diagram of the present embodiment；

Fig. 3 is the top view schematic diagram of Fig. 2；

Fig. 4 is that the tommyhead bolt of the present embodiment is arranged on the schematic diagram in T-slot；And

Fig. 5 is the top view schematic diagram of Fig. 4.

Specific embodiment

To describe composition of the present utility model and operation principle below with reference to the accompanying drawings and in conjunction with the embodiments in detail.

Referring to accompanying drawing 2 and accompanying drawing 3, a kind of tommyhead bolt of the present embodiment, by have long side 21, the bolt block 2 of minor face 22 and Stud 1 on bolt block 2 forms, and is used for being arranged on connection external member in T-slot 3.

Wherein, for ensureing the intensity of tommyhead bolt, tommyhead bolt typically forms threaded stud 1 He using round steel Vehicle Processing The overall structure of bolt block 2, the first Vehicle Processing of bolt block 2 becomes disc, then forms symmetrical long side 21 through machining, remaining Other both sides constitute the minor face 22 with arc.

It is connected with protrusion 23 beyond minor face 22 plane in the minor face 22 of bolt block 2 near the position on long side 21, raised Thing 23 uses the technique processing method shaping that spot welding is piled up, it is possible to use extruding or the shaping of embedded technique processing method.

In conjunction with referring to accompanying drawing 4, radius distance R of protrusion 23 and stud 1 axis is more than lower mouth groove 31 width of T-slot 3 Apart from H 1/2.

In conjunction with referring to accompanying drawing 5, the width between the long side 21 of bolt block 2 is less than the width of T-slot 3 groove 31 suitable for reading, and bolt Groove suitable for reading 32 width with diameter greater than T-slot 3 between seat 2 minor faces 22, less than the width of the lower mouth groove 31 of T-slot 3, uses When, tommyhead bolt puts into T-slot 3 with the direction of I position, and that is, the broadside 21 of bolt block 2 is put into along the direction of T-slot 3, dextrorotation Turn about 90 degree, tommyhead bolt is in II position, and the protrusion 23 being now fixed in minor face 22 edge is connected to the lower mouth groove of T-slot 3 On 31 side wall.During taking-up, tommyhead bolt only need to rotate about 90 counterclockwise and returns to I position and can smoothly take out.

As can be seen from the above description, due to the minor face 22 in bolt block 2 be connected near the position on long side 21 super Go out the protrusion 23 of minor face 22 plane, protrusion 23 is wide more than the lower mouth groove 31 of T-slot 3 with the distance of the radius R of stud 1 axis The 1/2 of degree distance, thus ensure that tommyhead bolt is put into and rotated about 90 degree of positions from T-slot 3 top fastened using nut When, protrusion 23 is connected on the side wall of lower mouth groove 31 of T-slot 3, has thoroughly prevented when tommyhead bolt uses nut to fasten because of rotation Turn frictional force and produce rotation skidding, easy to use.Additionally, protrusion 23 uses the technique machine-shaping that spot welding is piled up, plus Work process is simple, with low cost.

The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for this For the technical staff in field, the utility model can have various modifications and variations.All of the present utility model spirit and principle Within, any modification, equivalent substitution and improvement made etc., should be included within protection domain of the present utility model.

Claims

1. a kind of tommyhead bolt, by have long side (21), the bolt block (2) of minor face (22) and be located at described bolt block (2) on spiral shell Post (1) form, described tommyhead bolt be installed in T-slot (3) be used for connecting external member it is characterised in that：In described bolt block (2) minor face (22) is connected with the protrusion (23) beyond described minor face (22) plane, institute near the position of described long side (21) The radius distance stating protrusion (23) with described stud (1) axis is more than lower mouth groove (31) width distance of described T-slot (3) 1/2.

2. a kind of tommyhead bolt according to claim 1 it is characterised in that：Described protrusion (23) uses spot welding to pile up, squeezes Pressure or the shaping of embedded technique processing method.