Reverse cold extrusion mold for car rear transversal stabilizer bar casing tube

Abstract

A rear transverse stabilizer rod bushing reverse cold extrusion die is disclosed, belonging to plastic forming die of metallic material and solving the problems that the current extrusion convex die has complex structure, large variation of cross section, large processing difficulty, low service life, inconvenient installation and regulation, excessive required materials of the die and high expenditure. The invention comprises a reverse extrusion concave die, an ejection device, a reverse extrusion convex die and a guide device; a punching head of the reverse extrusion convex die is sequentially divided into a punching head lower end, a working section and a fixation section, the punching head lower end is a cone, the entire working section is tooth-shaped; the diameter, the spline module and the number of teeth thereof are equal to relative parameters of the bushing to be formed; the fixation section is cylindrical; a conical clamping ring of the reverse extrusion convex die is a round table having an inner hole, the side thereof has an axial incision, and the inner hole has annular channels that are distributed equidistantly. The invention is convenient in manufacturing, installation, regulation and usage, stable and reliable in operation, wide in application range of the technology and long in service life; the die expenditure is lowered due to quite few materials required for manufacturing the convex die.

Description

technical field [0001] The invention belongs to a metal material plastic forming die, which is used for the production of the cold extruded part of the rear lateral stabilizer bar casing of a car. Background technique [0002] The rear stabilizer bar sleeve of a car is an internal spline cup cylindrical part with a modulus of 0.78, a tooth number of 30-32, and a tooth length of more than 30 mm. [0003] For the inner ratchet-shaped cup cylindrical parts, the lower end of the reverse extrusion punch currently used has a cone angle of 55°, the height of the toothed part is 14.5mm, and behind the 9mm wide working belt is an 8.5mm wide For the backlash part, the outer diameter of the backlash part is 0.1mm smaller than the size of the bottom of the ratchet tooth, and a larger fillet (R15, R20) is used for transition. The non-working part of the punch is divided into three parts distributed at 120° The function of the groove is to cooperate with the hole in the stripping ring. T...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a reverse cold extrusion die for rear stabilizer bar casing, which solves the problem of complex structure of the existing extrusion punch, large cross-section changes along the axis, great difficulty in processing and manufacturing, and low service life. It is inconvenient to install and adjust shallow cup cylindrical parts with short shape length and punches, and more mold materials are required to manufacture punches, resulting in high mold costs

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