CN103737260A - Process for tapping 10-mm threaded hole in brake adjusting arm casting of automobile - Google Patents

Abstract

The invention discloses a process for tapping a 10-mm threaded hole in a brake adjusting arm casting of an automobile. The process mainly comprises the following steps that (1), a part is clamped tightly through a pneumatic component, and a hole with the diameter being 60mm and a milled end face are drilled in the casting; (2), after drilling, tapping is carried out through thread processing equipment, the tapping standard is multiplied by the coefficient 0.5, f is 0.2mm/r, V is 20mm/min, and the actual cutting speed is set to be 20.8m/min; (3), the flexible working time is 0.41min for tapping an M10-mm thread, and the flexible working time is 0.15min for tapping an Rc1/8 hole. The process has the advantages that castings produced according to the process can improve the brake stability, improve tensile strength and bear vibration or impact, are suitable for mass production and lower in cost, and can be improved according to different automobile types conveniently.

Description

A kind of braking automobile is adjusted arm foundry goods and is attacked 10mm screwed hole technique

Technical field

The present invention relates to automobile technical field, relate in particular to a kind of braking automobile adjustment arm foundry goods and attack 10mm screwed hole technique.

Background technology

Progress along with technology; the front brake of automobile is adjusted arm shell and is being brought into play more and more important effect; its Main Function is front brake to be adjusted to arm support and protect, and Ta center is a splined hole, and outside is worm-gear toothing; there is a worm shaft side; on head, have a four directions, adjust brake use, outermost has a hole; dress pin connects wheel cylinder, and hole and keyway and axle coordinate transmitting torque to reach the effect of adjusting brake.Foundry goods is wherein for supporting and protection front brake adjustment arm; while is carry-over moment also, therefore part is had to some strength requirement, should possess certain tensile strength and can bear vibrations or impact; if these foundry goods are produced in enormous quantities, need lower cost.

Thereby, for front brake, adjust the processing of arm foundry goods, particularly the screwed hole technique for foundry goods exists certain drawback, therefore, for above aspect, need to make effective innovation.

Summary of the invention

The object of this invention is to provide a kind ofly improve brake degree of stability, can improve tensile strength, can bear vibration or impact, the braking automobile that is applicable to producing in enormous quantities, be convenient to improve according to different automobile types adjusts arm foundry goods and attacks 10mm screwed hole technique, to solve many deficiencies of prior art.

Object of the present invention is carried out specific implementation by the following technical programs:

Braking automobile is adjusted arm foundry goods and is attacked a 10mm screwed hole technique, mainly following steps, consists of:

(1) first, utilize pneumatic original paper to carry out part is stepped up, on foundry goods, bore hole and an end face milling of Ф 60mm;

(2) after boring, adopt thread processing equipment to carry out tapping, its tapping standard is multiplied by coefficient 0.5, f=0.2mm/r, and V=20mm/min, sets actual cut speed 20.8m/min;

(3) flexible working hours, attack M10mm screw thread 0.41min, attack Rc1/8 hole 0.15min.

The beneficial effect that braking automobile adjustment arm foundry goods of the present invention is attacked 10mm screwed hole technique is:

The foundry goods of producing by the method can improve brake degree of stability, can improve tensile strength, can bear vibration or impact, be applicable to producing in enormous quantities, cost is lower, is convenient to improve according to different automobile types.

The specific embodiment

Described in the embodiment of the present invention, braking automobile is adjusted arm foundry goods and is attacked 10mm screwed hole technique,

Mainly by following steps, formed:

(1) first, utilize pneumatic original paper to carry out part is stepped up, on foundry goods, bore hole and an end face milling of Ф 60mm;

(2) after boring, adopt thread processing equipment to carry out tapping, its tapping standard is multiplied by coefficient 0.5, f=0.2mm/r, and V=20mm/min, sets actual cut speed 20.8m/min;

(3) flexible working hours, attack M10mm screw thread 0.41min, attack Rc1/8 hole 0.15min.

Claims (1)

1. braking automobile is adjusted arm foundry goods and is attacked a 10mm screwed hole technique, it is characterized in that, mainly following steps, consists of:

(1) first, utilize pneumatic original paper to carry out part is stepped up, on foundry goods, bore hole and an end face milling of Ф 60mm;

(2) after boring, adopt thread processing equipment to carry out tapping, its tapping standard is multiplied by coefficient 0.5, f=0.2mm/r, and V=20mm/min, sets actual cut speed 20.8m/min;

(3) flexible working hours, attack M10mm screw thread 0.41min, attack Rc1/8 hole 0.15min.