Die used in extrusion moulding of high-precision complex copper alloy thrust bearing seat

Abstract

The invention discloses a die used in extrusion moulding of a high-precision complex copper alloy thrust bearing seat. The mould comprises a male die part, a female die part, a guide part and a push-out part. Compared with the prior art, the die disclosed by the invention is improved to be one set of die instead of multiple sets of dies with regard to copper alloy thrust bearing workpiece under the same equipment condition, and is improved to be single-process extrusion moulding instead of multi-process extrusion moulding, as well as single heat instead of repeated heat, and meanwhile the extrusion accuracy of large equipment is improved; the invention provides an extrusion die structure and method of high-precision extrusion of the large equipment, a quick-change male die, a high-precision stop collar, a high-intensity thrust pushing piece and a guide device locking prevention structure are utilized during the production, so as to shorten the manufacture procedure and reduce the labor intensity. The die disclosed by the invention has the advantages of high utilization rate of material, short manufacture procedure, high accuracy, long service life, low cost and the like.

Description

technical field [0001] The invention belongs to the metal extrusion forming technology, specifically, it is used in a wide range of copper alloy forming fields, the shape of the parts is complex, the thickness and dimension accuracy of the bottom is high, the deformation temperature is in the alloy recrystallization temperature zone, and the oil groove is formed on the bottom material. Precise extrusion dies for workpieces under flow-resistant deformation conditions. Background technique [0002] At present, for the forming of the thrust bearing plate with oil groove, it is generally formed through multiple sets of convex and concave molds and multi-pass extrusion, and the shape is pressed into shape after repeated heating. The embossing method presses the oil tank, and there are many fire times, many molds, and many processes. The specific deficiencies and shortcomings of these prior art are as follows, see figure 1 , description of thrust bearing extrusion difficulty: ...

AI Technical Summary

Problems solved by technology

[0004] 2. Extrusion according to the traditional extrusion die structure, the calculated extrusion force is 600 tons, and the stroke accuracy of the 600-ton press is ±1, which is difficult to meet the requirement of 2.9±0.2

[0005] 3. In order to ensure the integrity of the bottom shape, the extrusion ejection position must be set on the crescent foot 2. The width of the crescent foot 2 is 4mm, and the arc length is 15. The compressive strength of the traditional long ejector rod is not enough, and the workpiece after extrusion Staying in the die cannot be effectively ejected

[0006] 4. For mass production of the extrusion punch, the extrusion punch of the oil tank 1 is small in size and easy to wear, and cannot be integrated with the rest of the punch. Otherwise, the entire punch must be replaced after one oil groove protrusion is worn out, which is economical. Poor sex

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