CN2145091Y

CN2145091Y - Grinding apparatus for twist drill chin

Info

Publication number: CN2145091Y
Application number: CN92245945U
Authority: CN
Inventors: 胡永奎
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-12-25
Filing date: 1992-12-25
Publication date: 1993-11-03
Anticipated expiration: 2002-12-25

Abstract

The utility model discloses a grinding apparatus for twist drill chin which is provided with two angle measuring rulers on the middle part of the beam of a doorframe-shaped ruler body, and the angle measuring ruler can rotate circling the same axle center to adjust the included angle between the working edge of the two angle measuring rulers. The end parts of the two erect columns of the doorframe-shaped ruler body are also provided with two rulers capable of wandering. The utility model can be used for measuring the apical angle of sharpening drill and the degree of symmetry of a main cutting edge.

Description

Grinding apparatus for twist drill chin

The utility model relates to a kind of survey tool of metal cutting tool, more particularly is a kind of sharpening measurer of spiral bit.

Spiral bit is a kind of cutter that generally uses in the mechanical metalworking, should give at first when the geometric parameter of assurance standard then is drill sharpening during the spiral bit sharpening and consider, in the ordinary course of things, for the drift angle of spiral bit and some important geometric parameters such as symmetry of main cutting edge, entirely hold with self experience of staff, this is not enough.When measuring the symmetry of drill bit drift angle or main cutting edge, though can measure its drift angle size by universal protractor, operation inconvenience; And to the two main symmetries of cutting sword, then need at first to measure the length of two main cutting edges, because some drill bit is less, universal protractor is excessive relatively, this also makes troubles to measurement, in addition, and drill bit main cutting edge and chisel edge space intersection, often be difficult for seeing clearly its angular relationship, this has just caused the inaccuracy of measurement result.

When providing a kind of sharpening spiral bit, the purpose of this utility model measures the measurer of its drift angle and symmetry.

To achieve these goals, the technical solution that the utility model adopts is: spiral bit sharpening measurer, it has the blade (1) of an apparent doorframe type, be provided with two bevel protractors (2) that can rotate at the crossbeam middle part of blade (1) around same axle center, the top, angle angle that two working edges of two bevel protractors (2) form is positioned at the outside of crossbeam inboard, this is can not make drill end hit crossbeam in order to guarantee to measure drill bit, so as drill bit two main cutting edges can be normally by according on the working edge of two bevel protractors (2); Two post end at blade (1) are respectively equipped with ruler (3), and this ruler (3) can move about, and the axis of symmetry of direction that it moves about and blade (1) is perpendicular, adjust the symmetry of measuring drill bit by moving about of two rulers (3); In addition, bevel protractor (2), ruler (3) can be fixed on clamp nut (4) screw (5) at a certain select location place on the blade (1) in addition, this position is selected according to the drill bit of sharpening, promptly dimensions and its symmetry to be measured of concrete sharpening drill bit is selected.

Spiral bit sharpening measurer disclosed in the utility model, it is to be provided with bevel protractor and ruler on the blade of a doorframe type simultaneously, its compact conformation, the machining accuracy of measurer itself guarantees easily, so just guaranteed the accuracy of measurement result, available again ruler is measured the symmetry of its main cutting edge when the use angle chi is measured the drill bit drift angle, and this measurer is not subjected to the restriction of drill bit specification.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the vertical view of Fig. 1;

Fig. 3 is the left view of Fig. 1.

Mark among the figure: (1) blade; (2) bevel protractor; (3) ruler; (4) nut; (5) screw.

Below in conjunction with drawings and Examples the utility model is done further to describe in detail.

Embodiment

With reference to accompanying drawing 1, at the crossbeam middle part of the blade (1) of door type framework hinged two fan-shaped bevel protractors (2), the angle groove is to scribe along the periphery of fan-shaped arc section, blade (1) is provided with the zero reference line, when bevel protractor (2) rotates adjustment, can read the angle of its present position like this.The chi body of fan-shaped bevel protractor (2) is embedded into blade (1) and goes up in the set concave station face in middle part, and the chi face of fan-shaped bevel protractor (2) is concordant with the chi face of blade (1), referring to accompanying drawing 2, fan-shaped bevel protractor (2) its blade when adjusting rotation is positioned at described concave station face all the time.It is hinged on the type blade (1) by holding screw (5) and nut (4) at fan heart place referring to accompanying drawing 1 and accompanying drawing 2, two fan-shaped bevel protractors (2), two fan-shaped bevel protractors (2) serve as that axle rotates with this hinged center just also.By accompanying drawing 2 as seen, both are that the local concavo-convex stack that matches is set together for the fan heart places of two fan-shaped bevel protractors (2), thick half of chi fallen in the i.e. fan heart of left side one bevel protractor (2) back side truncation that is in the chi face, the bevel protractor on right side (2) goes thick half of chi in the fan heart place's truncation of the front of chi face, both stack settings that match.

Above-mentioned bevel protractor (2) also can be made the pointer shape, and the angle groove makes concave station circular arc week at blade (1) along last, and this can realize measuring the purpose of drift angle too.

Referring to accompanying drawing 1, two rulers (3) lay respectively at the end of two columns of doorframe type blade (1), and the chi body of ruler (3) is embedded in the groove that post end offers, simultaneously referring to accompanying drawing 2 and accompanying drawing 3, thick the equating of chi of the degree of depth of groove and ruler (3), the chi face of the chi face of ruler (3) and blade (1) thereby also keep concordant, the crossbeam of this groove and blade (1) is parallel to each other, and it plays the location and the guide effect of ruler (3).By accompanying drawing 1 as seen, one side of ruler (3) is shaped on groove along the limit, along locating to be provided with the zero reference line between two parties, offer the strip hole at ruler (3) middle part along the blade direction at two column upper groove platforms of blade (1), trip bolt (5) and nut (4) link itself and blade (1).

The using method brief introduction:

Press the specific requirement of the drift angle size of required sharpening drill bit, adjusting two angles between fan-shaped bevel protractor two working edges then is fixed, adjust the relative distance on limit, ruler (3) two working end again by the diameter of required drill bit, and be fixed, so just can measure.The utility model can also use as the survey tool of part metals cutting tool and the angular surveying utensil of part miniature workpiece except the sharpening special measurement instrument as spiral bit uses.

Claims

1, a kind of spiral bit sharpening measurer, it is characterized in that: it has the blade (1) of a doorframe type, be provided with two bevel protractors (2) that can rotate around same axle center at the crossbeam middle part of blade (1), the top, angle angle that two working edges of two bevel protractors (2) form is positioned at the outside of crossbeam inboard; End at two columns of blade (1) is respectively equipped with ruler (3), and two rulers (3) can move along the direction vertical with the axis of symmetry of blade (1) and abutting end and this symmetry axis keeping parallelism of two rulers (3); Also be provided with the securing member that bevel protractor (2), ruler (3) can be fixed on a certain select location place on the blade (1).

2, spiral bit sharpening measurer according to claim 1, it is characterized in that: described bevel protractor (2) is fan-shaped, and its angle groove is engraved on the edge of fan-shaped arc section week, and blade (1) is provided with the zero reference line; The chi body of fan-shaped bevel protractor (2) embeds blade (1) and goes up in the set concave station face, and the chi face of fan-shaped bevel protractor (2) is concordant with the chi face of blade (1).

3, spiral bit sharpening measurer according to claim 1, it is characterized in that: the chi face of described two rulers (3) is concordant with the chi face of blade (1).

4, according to claim 1 or 3 described spiral bit sharpening measurers, it is characterized in that: the middle part of described ruler (3) is provided with elongated hole along the chi length direction, and trip bolt (5), nut (4) link itself and blade (1) by this elongated hole.

5, spiral bit sharpening measurer according to claim 1 and 2 is characterized in that: the local concavo-convex stack suitably in the fan heart place of described fan-shaped bevel protractor (2) is linked both and blade (1) by holding screw (5), nut (4).