CN203197270U - Cutter used for machining piston hole of chassis of car - Google Patents

Abstract

The utility model relates to the field of machining equipment for a piston hole of a chassis of a car. A cutter used for machining a piston hole of a chassis of a car comprises a cutter body, a cutting edge and cut-off chipping groove, wherein a front angle is formed between the cutting surface of the cutting edge and the cutter body; the front angle is of a positive front angle planar type and is 5 degrees to 10 degrees; the cutter body at the bottom end of the cutting edge is transitioned to the side surface of the cutter body smoothly through a circular arc; the radius of the circular arc is 1.5 mm; the section of the cut-off chipping groove is a right-angle triangle with the cutting surface as an oblique side thereof, and the top angle of the right-angle triangle is 15 degrees; and a distance between the front end face of the cut-off chipping groove and the front end of the cutting edge is 0.1 mm, and the oblique side of the cut-off chipping groove is 0.7 mm in length. As the rational front angle is provided, the cutter used for machining the piston hole of the chassis of the car reduces plastic deformation of the cutter, suppresses generation of built-up edges and scales, increases easily cut-off chippings as the cut-off chipping groove is arranged in the front angle, not only guarantees machining quality and efficiency, but also reduces danger coefficient of operators.

Description

The cutter that is used for processing automobile chassis piston hole

Technical field

The utility model relates to automobile chassis piston hole process equipment field, relates in particular to a kind of cutter for processing automobile chassis piston hole.

Background technology

In mechanical field, face the processing in different parts cutting face or hole, all be provided with special process tool, the processing of automobile chassis piston hole is provided with exclusive cutter equally, but in stage property in the past, owing to cutter anterior angle is not set, make in the process of Tool in Cutting so sharply, and cutting speed is slow, in addition, existing cutter is not provided with chip-breaker equally and makes that easy breaking cut when cutting, reduces workmen's degree of danger.The patent No. is that ZL200620069111.9 has proposed " dedicated tool of piston inner diameter processor ", and it only provides a kind of anchor clamps and comes better fixed cutting tool, makes when cutting conveniently, tool bodies is not further improved.

The utility model content

The purpose of this utility model is: at the deficiencies in the prior art, propose a kind of cutter for processing automobile chassis piston hole, overcome the shortcoming that is not provided with rational anterior angle and chip-breaker that existing cutter exists.

The technical solution adopted in the utility model:

A kind of cutter for processing automobile chassis piston hole, comprise tool bodies, cutting edge and chip-breaker, form an anterior angle between the cutting face of described cutting edge and the tool bodies, described anterior angle is the positive rake angle plane, the anterior angle size is 5 °～10 °, the tool bodies of cutting edge bottom is smoothly transitted into the tool bodies side surface by circular arc, and described arc radius is 1.5 ㎜.

Described chip-breaker is that cross sectional shape is the right angled triangle of hypotenuse with the cutting face, and drift angle is 15 °, and the chip-breaker front end face is apart from cutting edge front end 0.1 ㎜, and the chip-breaker hypotenuse is 0.7 ㎜.

Useful good effect of the present utility model:

The utility model is provided with rational anterior angle, has reduced the plastic deformation of cutter, thereby reduces the work hardening of surface of the work when cutting, and has suppressed long-pending generation of cutting knurl and squama thorn, and has reduced the vibration that adds man-hour.Be provided with chip-breaker in the anterior angle, making increases disconnected cutting easily, has not only guaranteed crudy and efficient, and has reduced operating personnel's danger coefficient.

Description of drawings

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

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

The cutaway view at A-A place among Fig. 3 Fig. 1;

Fig. 4 is the zoomed-in view in Fig. 3 circle.

The specific embodiment

Referring to Fig. 1～4,1. tool bodies, 2. cutting edge, 3. chip-breaker.

Below in conjunction with accompanying drawing the specific embodiment of the present utility model is elaborated.

Referring to Fig. 1～Fig. 4, a kind of cutter for processing automobile chassis piston hole, comprise tool bodies 1, form an anterior angle γ between the cutting face of described cutting edge 2 and the tool bodies 1, anterior angle γ is that positive rake angle planar shaped and size are 5 °～10 °, the tool bodies of cutting edge bottom is smoothly transitted into the tool bodies side surface by circular arc, arc radius R is 1.5 ㎜, has improved the sharpness of cutter in cutting, increases anterior angle γ, can reduce cutting force, heat in metal cutting and cutting power, improve tool life; But the excessive then cutter head of anterior angle γ intensity reduces, and radiating condition is poor, thereby tool life is reduced.And work piece surface also had certain influence, increase anterior angle γ and can reduce plastic deformation, thereby reduce the work hardening of surface of the work, and suppress the generation that built-up edge and squama sting; Vibration during increase anterior angle γ can reduce to cut improves crudy.Therefore through a large amount of experiment cuttings, the most suitable 5 °～10 ° of anterior angle γ location.Be provided with chip-breaker 3 in the anterior angle γ; chip-breaker 3 is the right angled triangle of hypotenuse with the cutting face for cross sectional shape; apex angle ss is 15 °, and the distance Y of chip-breaker 3 front end faces and cutting edge 2 is 0.1 ㎜, and chip-breaker 3 hypotenuse X are 0.7 ㎜; the effect of playing the protection cutter that can be indirect; make the easy chip breaking of wilful reasonable material, iron filings just can or not worked the mischief to the employee by even very long like this; and solved the burr phenomena that occurs in the workpiece to be machined, improved quality and the production efficiency of product.

Claims (2)

1. cutter that is used for processing automobile chassis piston hole, comprise tool bodies, cutting edge and chip-breaker, form an anterior angle between the cutting face of described cutting edge and the tool bodies, it is characterized in that: described anterior angle is the positive rake angle plane, the anterior angle size is 5 °～10 °, the tool bodies of cutting edge bottom is smoothly transitted into the tool bodies side surface by circular arc, and described arc radius is 1.5 ㎜.

2. the cutter for processing automobile chassis piston hole according to claim 1, it is characterized in that: described chip-breaker is that cross sectional shape is the right angled triangle of hypotenuse with the cutting face, drift angle is 15 °, and the chip-breaker front end face is apart from cutting edge front end 0.1 ㎜, and the chip-breaker hypotenuse is 0.7 ㎜.

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