CN1039544A

CN1039544A - Blank of cross axle moulding process and mould

Info

Publication number: CN1039544A
Application number: CN 89102227
Authority: CN
Inventors: 王辉宇; 胡渭滨
Original assignee: HUBEI UNIVERSAL-JOINT FACTORY
Current assignee: HUBEI UNIVERSAL-JOINT FACTORY
Priority date: 1989-04-08
Filing date: 1989-04-08
Publication date: 1990-02-14

Abstract

A kind of cross axle temperature, hot extrusion molding technology and mould, it is at first bar to be heated to certain temperature, put into the extrusion die extrusion modling then, changed the method that original loose tool forges the processing blank of cross axle, improved raw-material utilization rate greatly, reduced processing capacity, and adopt method of the present invention, the dimensionally stable of processing blank of cross axle has reduced percent defective.

Description

Blank of cross axle moulding process and mould

The present invention is a kind of moulding process and the mould that is used for mechanical industry processing metal blank of cross axle.

What the method for the moulding of traditional metal spider blank generally adopted is loose tooling forging manual labour skill, the blank of cross axle that this technology is forged, stock utilization low (about about 50%), dimensional accuracy is low, same workpiece four diameter of axle phase mutual deviations reach 2.2mm, reach 3.8mm with a collection of workpiece spindle footpath phase mutual deviation, and the mismatch amount is 2.5mm to the maximum, it is difficult that low therefore its follow-up crudy of surface roughness guarantees, causes subscription rate easily.

The object of the present invention is to provide a kind of utilization rate that improves material, improve the precision of blank of cross axle, reach few cutting, reduce manufacturing procedure, reduce production costs, reduce the blank of cross axle moulding process and the mould of following process percent defective.

The object of the present invention is achieved like this, adopt the technology of temperature, hot extrusion molding, the blank of processing cross axle, at first bar is heated to 500～1200 ℃, then the bar of heating is put into the hole, material road of the extrusion die that is installed on the forcing press, start forcing press, be contained in extrusion head on the forcing press and bar be pressed in the die cavity of extrusion die and make the blank of cross axle moulding.

Above-mentioned extrusion die is to be made of the upper and lower mould that two halves have a cross axle die cavity, faying face at upper and lower mould, have four steam vents along four terminations of cross axle die cavity, and upwards have material hole, road perpendicular to the cross axle die cavity at the middle part of patrix.

Above-mentioned technology, before bar was gone into mould, the reply extrusion die carried out preheating, and extrusion die is evenly sprayed lubricant.

Adopt above-mentioned technology, can improve raw-material utilization rate significantly, bring up to more than 80%, promptly improved more than 30%, thereby greatly reduced product cost than original by 50% of former technology.The present invention simultaneously can make the steady quality of blank of cross axle, and the precision height reduces percent defective, and can reduce manufacturing procedure, reaches the purpose of few cutting.

The present invention is further illustrated below in conjunction with accompanying drawing:

Fig. 1 is the blank drawing of cross axle.

Fig. 2 is the vertical view of extrusion die assembly;

Fig. 3 is the double action press schematic diagram to be extruded that extrusion die is installed.

Fig. 4 is the work sheet that the double action press extruding is finished.

Among the figure: 1. workbench (double action press); 2. counterdie location-plate; 3. stop nut 4. fixed heads; 5. spring; 6. adjusting screw(rod); 7. pressuring template; 8. extrusion head; 9. extrusion head gland; 10. adjustment cushion block; 11. bolt; 12. guide rail of press machine; 13. outer slide; 14. backing plate; 15. inner slide; 16. steam vent; 17. material hole, road; 18. patrix; 19. detent mechanism; 20. bar; 21. guide pillar; 22. counterdie; 23. moulding blank of cross axle; 24. bolt;

Referring to Fig. 4, extrusion die is installed as follows: counterdie location-plate 2 is contained on the double action press workbench 1 by bolt 24, counterdie 22, then pass through fixed head 4 and bolting on counterdie location-plate 2, patrix 18 adopts detent mechanism 19 and pressuring template 7 to fuse, guide pillar 21 is housed to guarantee patrix 18 relative counterdie 22 directed movements on patrix 18 and the counterdie 22, is equipped with between pressuring template 7 and the fixed head 4.Adjusting screw(rod) 6, stop nut 3 and spring 5, so that extruding utilizes the elastic force of spring 5 to make pressuring template 7 drive patrix 18 disengaging counterdies 22 after finishing, can take out moulding blank of cross axle 23, and under the effect of stop nut 3, make patrix 18 rising certain altitudes promptly limited, break away from the pilot hole of counterdie 22 to prevent guide pillar 21.

Extrusion head 8 is adjusted cushion block by extrusion head gland 9, and bolt 11 fuses with backing plate 14 on the inner slide 15 that is fixedly installed in double action press then.

Example 1, the technology of processing EQ140 direction machine cross axle (φ 14 * 57) blank, at first blanking, bar is heated to 500 ℃ in Medium Frequency Induction Heating Furnace, then hot bar material 20 is put into the hole, material road 17 (as Fig. 3) of the extrusion die 18 after above-mentioned the installing, starting double action press presses down, the outer slide 13 that at first is both sides is depressed patrix 18 and counterdie 22 pressings, make, the die cavity of counterdie forms closed state, the inner slide 15 of double action press moves downward then, thereby make 8 times extruding of dress extrusion head thereon, bar 20 is clamp-oned, in

counterdie

18 and 22 the die cavity, i.e. blank of cross axle 23 moulding.

In above-mentioned technology, before bar was put into the hole, material road of patrix, the upper and

lower mould

18 and 22 of reply extrusion die carried out preheating (about 300 ℃), and evenly sprays 1: 15 colloidal graphite mixed with water, again the hot pin material is put into extrusion die and pushes.

Example 2: the technology of processing EQ140 universal-joint cross trunnion φ 25 * 108 blanks, at first blanking is heated to 800 ℃ with bar in Medium Frequency Induction Heating Furnace, then by example 1 extrusion modling.

Example 3: the technology of processing EQ140 differential spider φ 28 * 188 blanks, at first blanking is heated to 1200 ℃ with bar in Medium Frequency Induction Heating Furnace, then by example 1 extrusion modling.

Claims

1, a kind of blank of cross axle moulding process, it is characterized in that: adopt warm extrusion forming process at first bar to be heated to 500 ℃～1200 ℃, bar after will heating is then put into the hole, material road 17 of the extrusion die that is installed on the forcing press, start forcing press, be contained in extrusion head 8 on the press ram and bar 20 be pressed into moulding in the die cavity of extrusion die.

2, a kind of blank of cross axle moulding extrusion die of the described technology of claim 1 that uses is characterized in that: extrusion die is to be made of the upper and lower mould 18,22 that two halves have a cross axle die cavity; faying face at patrix or counterdie; have four steam vents 16 along four terminations of cross axle die cavity, and upwards have material hole, road 17 perpendicular to the cross axle die cavity at the middle part of patrix.