CN202151797U - A keyway processing bit gauge - Google Patents

Abstract

A keyway processing bit gauge comprises a plate body; the lower side of the plate body is provided with an opening with a 90-degree included angle; the upper side of the plate body is provided with a tool setting groove; and central planes of the tool setting groove and the opening are coincided with each other. The keyway processing bit gauge realizes easy and accurate tool setting, reduces errors of degree of symmetry during keyway processing in shafts, and improves processing precision of keyways.

Description

A kind of processing keyway bit ga(u)ge

Technical field

The utility model relates to a kind of employed bit ga(u)ge of keyway of on axle, processing.

Background technology

Keyway on the axle is generally all processed on vertical knee-type milling machine, but all there is the tool setting difficulty in work in-process, and how the unmanageable problem of precision promptly guarantees the center line of the center of milling cutter to positive axis.And the direct symmetry error of the keyway that processes of influence of this error, and if symmetry error can not guarantee, surpass designing requirement, will make the assembling difficulty, influence assembly precision and assembly quality.

The presetting cutter method of processing keyway is a lot of at present, and the tool setting precision is not high, and general the most general presetting cutter method is shown in Fig. 1 a and Fig. 1 b; The tool setting process is: axle 100 is fixed on the platen, travelling table and milling cutter 200 just contact a milling cutter 200 and axle 100 surfaces then at present; Milling machine spindle (or decline workbench) then rises; Rotate platen and vertically move handwheel, make axle 100 move to the center of milling cutter 200, shown in Fig. 1 b.According to the pitch of leading screw on the handwheel and the size of axle and milling cutter diameter, calculate handwheel and rotate the number of turns.The computing formula of rotating the number of turns is following:

N is the handwheel rotating cycle in the formula;

is milling cutter diameter; is the diameter of axle, and e is a handwheel leading screw pitch.

This presetting cutter method error from: 1. when milling cutter and workpiece are drawn close, be difficult to judge and accomplish that axle just contacts with milling cutter, neither lean on last, scratch axle, very close to each other with axle again; 2. the scale of the pitch error of handwheel leading screw and indicator and the collimation error.

The utility model content

In order to address the above problem, the utility model provides a kind of processing keyway bit ga(u)ge.

The utility model is that the technical scheme that its technical problem of solution is adopted is,

A kind of processing keyway bit ga(u)ge comprises a plate body, and it is 90 ° opening that said plate body downside is provided with angle, and the plate body upside is provided with the tool setting groove, and the median plane of tool setting groove and opening overlaps.

The groundwork face of bit ga(u)ge is 90 ° of openings and tool setting groove, and the median plane of tool setting groove will overlap with the median plane of 90 ° of openings, and its error size directly influences the tool setting precision of milling cutter.Wire cutting machine tool processing has now guaranteed this requirement of model.

The width of tool setting groove is confirmed method: $B=H+\frac{f(d-h)}{2h}-t$

Wherein, B is the width of tool setting groove, and H is the cotter mill cutter diameter, and f is the symmetry requirement of keyway, and d is the diameter of axle, and h is the keyway degree of depth, and t is the coplanar degree error (generally being not more than 0.005) of 90 ° of open centre faces and tool setting groove center face.

The degree of depth A=keyway of tool setting groove require degree of depth h+1mm.

During use, on axle, model rotates gently and moves vertically around the center line of axle with the open card of model, and workbench also moves forward and backward simultaneously, can from the B groove of model, pass through to milling cutter, explains that then tool setting accomplishes, and can process.

The beneficial effect of the utility model is, uses this model can make keyway add that the tool setting in man-hour is convenient, tool setting is accurate, reduces the symmetry error that the last keyway of axle is processed, the machining accuracy of raising keyway.

Description of drawings

Fig. 1 a and Fig. 1 b are the tool setting process sketch mapes of existing processing keyway;

Fig. 2 is the structural representation of the processing keyway bit ga(u)ge of the utility model proposition,

Fig. 3 is the user mode sketch map of processing keyway bit ga(u)ge.

The specific embodiment

For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand with effect and understand, below in conjunction with illustrating and specific embodiment, further set forth the utility model.

Like Fig. 2, shown in Figure 3, the processing keyway bit ga(u)ge that the utility model proposes comprises plate body 300, and it is 90 ° opening 310 that said plate body 300 downsides are provided with angle, and plate body 300 upsides are provided with tool setting groove 320, and the median plane of tool setting groove 320 and opening 310 overlaps.

The groundwork face of bit ga(u)ge is 90 ° of openings and tool setting groove, and the median plane of tool setting groove will overlap with the median plane of 90 ° of openings, and its error size directly influences the tool setting precision of milling cutter.Wire cutting machine tool processing has now guaranteed this requirement of model.

The width of tool setting groove is confirmed method: $B=H+\frac{f(d-h)}{2h}-t$

Wherein, B is the width of tool setting groove, and H is the cotter mill cutter diameter, and f is the symmetry requirement of keyway, and d is the diameter of axle, and h is the keyway degree of depth, and t is the coplanar degree error (generally being not more than 0.005) of 90 ° of open centre faces and tool setting groove center face.

The degree of depth A=keyway of tool setting groove require degree of depth h+1mm.

During use, the opening 310 of model is stuck on the axle 100, model rotates gently and moves vertically around the center line of axle, and workbench also moves forward and backward simultaneously, can from the tool setting groove 320 of model, pass through to milling cutter 200, explains that then tool setting accomplishes, and can process.

The beneficial effect of the utility model is, uses this model can make keyway add that the tool setting in man-hour is convenient, tool setting is accurate, reduces the symmetry error that the last keyway of axle is processed, the machining accuracy of raising keyway.

More than show and described the advantage of basic principle, principal character and the utility model of the utility model.The technical staff of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the specification that the utility model just is described; The utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection domain to be defined by appending claims and equivalent thereof.

Claims (2)

1. a processing keyway bit ga(u)ge comprises a plate body, it is characterized in that, said plate body downside is provided with opening, and the plate body upside is provided with the tool setting groove, and the median plane of tool setting groove and opening overlaps.

2. a kind of processing keyway bit ga(u)ge according to claim 1 is characterized in that the angle of said opening is 90 °.

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