CN1254632A

CN1254632A - Technology for making semi-finished regulating arm and ball-upsetting equipment

Info

Publication number: CN1254632A
Application number: CN 98117043
Authority: CN
Inventors: 武广太; 潘学汉
Original assignee: JINXING MACHINERY FACTORY WENXIAN COUNTY HENAN
Current assignee: JINXING MACHINERY FACTORY WENXIAN COUNTY HENAN
Priority date: 1998-11-19
Filing date: 1998-11-19
Publication date: 2000-05-31
Anticipated expiration: 2018-11-19
Also published as: CN1109588C

Abstract

A technology for making semi-finished regulating arm includes such steps as blanking the circular steel rod, up setting a spherical column at one end, punch shaping, removing excess edge, removing burr and grinding plane. The upsetting ball is completed by a special equipment composed of punching machine, punch die and workpiece lifting mechanism. Its advantages are high productivity and high quality of products.

Description

Half-finished processing method of regulating arm and ball-upsetting equipment

The invention belongs to diesel engine oil pump plunger regulating arm semi-finished product processing method and implement special equipment in this method.

Traditional regulating arm semi-finished product adopt accurate cast steel explained hereafter, smart casting production process complexity, and bleb, sand holes, shrinkage cavity is many, interior tissue is loose, percent defective is high, productivity ratio is low.

It is simple to the purpose of this invention is to provide a kind of production technology, product dense internal organization, defectives such as pore-free, sand holes, shrinkage cavity, the half-finished processing method of the regulating arm that productivity ratio is high and implement special equipment in this method.

The present invention seeks to adopt following technical proposals to realize: its processing method is then going out the goalpost shape near one end pier for the blanking of round bar shape steel, punch forming again, and the unnecessary overlap that falls then removes deburring and regrinds flat.

Its pier ball need adopt specialized apparatus in process, this ball-upsetting equipment is with punch press, punch die and workpiece hoisting mechanism are formed, and the workpiece hoisting mechanism comprises ratchet assembly, pawl assembly, shadoof assembly and roof pressure structure, its upper trimming die and punch press dash to drag and are fixed together, counterdie is contained on the counterdie pier, on the bearing below the punch press, be provided with support plate, installing the axle that ratchet is housed on the support plate, this center line with upper and lower mould is vertical, have between counterdie and the ratchet center line with on, the roof pressure structure that the counterdie center line hangs down and closes mutually, roof pressure structure upper end is a thimble, thimble diameter≤round bar shape steel diameter, the lower end is a roller, in a side of ratchet the ratchet that connects with punch press by shadoof is arranged, and there is spring at the ratchet rear portion.

Because the existing circular steel of material selection of the present invention, avoided former casting method to produce defectives such as the pore in the product of producing, sand holes, advantage with product dense structure has adopted task equipment in addition in process of production, has therefore improved work efficiency greatly.And lay a good foundation for producing qualified finished product

The invention will be further described below in conjunction with drawings and Examples.

Fig. 1 is a semi-finished product workpiece front view;

Fig. 2 is the workpiece front view behind the pier ball in the work flow;

Fig. 3 is the cutaway view of local ball-upsetting equipment.

Embodiment 1: this shape of product such as Fig. 1, the length of L is 24.5～25mm, axis of great circle is Φ 12 ± 0.2, the excellent structural section of Φ 8 is truncated into the long blank of 34.5～35.5mm, blank two ends gradient ≯ 0.5mm, blank is put into the pier mould of ball-upsetting equipment, pier goes out the goalpost shape at distance one end 1mm place, its sphere diameter is Φ ' 11.7～12mm, its long L ' is 12～12.2mm (as shown in Figure 1), to there be the workpiece of goalpost shape to be contained in heating in the heating furnace, when the temperature for the treatment of workpiece reaches 780 ℃～800 ℃, workpiece be taken out punch forming in the shaping mould that is placed on punch press, the position that should note upper and lower mould during punching press is to guarantee the depth of parallelism and the perpendicularity of shaping workpiece, in punch forming, should adopt recirculated water cooling mould, the workpiece after the moulding treats that temperature reduces to 500 ℃～250 ℃, unnecessary overlap is washed away, the workpiece that falls behind the limit grinds off burr with abrasive machine, then serious decarburization is arranged, lack, the workpiece that splits is chosen, and through the check with qualified products through grinding machine to reaching the drawing requirement.

Embodiment 2: this product L length is 25～26mm, great circle is Φ 13 ± 0.1, with Φ 8 circular steel it is truncated into the long blank of long 39～39.5mm, blank is put into the pier mould of ball-upsetting equipment, go out the goalpost shape at one end pier, its sphere diameter is that the long L ' of Φ ' 12.5～Φ ' 13 goalpost is 14～14.2mm (as shown in Figure 1), to there be the workpiece of goalpost shape to be contained in heating in the heating furnace, when the temperature for the treatment of workpiece reaches 730 ℃～750 ℃, workpiece is taken out punch forming in the shaping mould that is placed on punch press, when the temperature of back to be formed workpiece is reduced to 300 ℃～250 ℃, with punch press unnecessary overlap is removed, then frustrate deburring, after check, with qualified products through grinding machine to reaching the drawing requirement, the work in-process points for attention are identical with embodiment 1.

Embodiment 3: the product axis of great circle is Φ 16 in the present embodiment, long L is 31.30mm, select Φ 9 circular steel for use, be truncated into the long blank of long 44～44.5mm, blank is put into the pier mould of ball-upsetting equipment, go out the goalpost shape at one end pier, its sphere diameter is Φ ' 14.5～Φ ' 15, goalpost L ' length is 14～14.5mm, punch forming under 750 ℃～780 ℃ temperature, when temperature is reduced to 450 ℃～350 ℃, wash away unnecessary overlap with punch press, other processing methods and points for attention are done the product that meets the drawing requirement to being processed into by embodiment 1.

The used ball-upsetting equipment of the present invention is a task equipment, this equipment is that punch die is added on the basis and the workpiece hoisting mechanism is done composition with the punch press, this hoisting mechanism comprises ratchet assembly I, ratchet and carry thick stick assembly II and the roof pressure structure III, dashing of upper trimming die and punch press head drags 1 to be bound up, upper trimming die is that patrix 3 is housed in die sleeve 4, thimble 2 is housed in the patrix 3, following punch die is packed on the counterdie pier 6 ', counterdie 5 is contained in the lower die-sleeve 6, the bearing 23 of punch press below is provided with two support plates 15, be fixed with the ratchet shaft 14 that ratchet 13 is housed on the support plate 15, one side of ratchet 14 has ratchet 19, and both horizontal center lines coincide, and spring 22 is equipped with in the rear end of ratchet 19, there is ratchet cover 20 ratchet and spring outside, there are an adjusting screw(rod) and nut 21 in the back of ratchet 19, and what link together with ratchet cover 20 is shadoof 18, and ratchet and annex thereof connect them by shadoof 18 with the drift of punch press.Locking nut 17 and adjusting nut 16 are housed on shadoof 18, roof pressure structure I I is arranged between ratchet 14 and counterdie, thimble 8 is arranged at its top, what link to each other with thimble 8 is top board 9, and the bottom of top board 9 is a push rod 10, and roller 11 is equipped with in push rod 10 lower ends, the distance of the distance H 〉=counterdie upper surface of the upper surface of thimble 8 between roller 11 bottom surfaces tooth root directly over the ratchet, roller shaft 12 parallels with ratchet shaft 14, and the center line of upper and lower mould and ratchet axis are perpendicular, coincides with the center line of roof pressure structure.

When blank enters pier ball program, blank is put into counterdie, drag when descending when dashing, shadoof is descending, the promotion ratchet is descending, simultaneously up and down punch die pushes straight shape blank and makes it the upper end one goalpost shape is arranged, and at this moment punch press is capable of lower dead center, and ratchet just inserts ratchet, drag when up when dashing, utilize the difference and the roller motion of height between the ratchet, push rod is moved upward, workpiece is ejected counterdie.

Claims

1. half-finished processing method of regulating arm is characterized in that: with the blanking of round bar shape steel, then going out the goalpost shape near an end pier, and punch forming again, the unnecessary overlap that falls then removes the deburring flat plane of answering grinding of regrinding.

2. processing method according to claim 1 is characterized in that: the diameter of the used round bar shape steel of blanking is less than axis of great circle in the semi-finished product, and length is greater than half-finished length, and pier goes out the workpiece behind the goalpost shape, should put on the stove earlier and heat, punch forming again.

3. processing method according to claim 1 and 2, it is characterized in that: the diameter of the used round bar shape steel of blanking is less than axis of great circle 7～4mm in the semi-finished product, length is greater than 11～15mm of semi-finished product length, before the workpiece punch forming on stove heating-up temperature be 750 ℃～800 ℃, carry out when the limit operation that falls should the workpiece temperature after moulding be reduced to 500 ℃～250 ℃.

4. processing method according to claim 3 is characterized in that: workpiece adopts recirculated water to mold cools down when punch forming.

5. used ball-upsetting equipment in the processing method according to claim 1, be with punch press, punch die and workpiece hoisting mechanism are formed, and the workpiece hoisting mechanism comprises ratchet assembly, pawl assembly, shadoof assembly and roof pressure structure, it is characterized in that: upper trimming die and punch press dash to drag and are fixed together, counterdie is contained on the counterdie pier, on the bearing below the punch press, be provided with support plate, installing the axle that ratchet is housed on the support plate, this center line with upper and lower mould is vertical, have between counterdie and the ratchet center line with on, the roof pressure structure that the counterdie center line hangs down and closes mutually, roof pressure structure upper end is a thimble, thimble diameter≤round bar shape steel diameter, the lower end is a roller, in a side of ratchet the ratchet that connects with punch press by shadoof is arranged, and there is spring at the ratchet rear portion.

6. ball-upsetting equipment according to claim 5 is characterized in that: the thimble lower end in the roof pressure structure is a push rod, the thimble upper surface to the distance 〉=counterdie end face of roller bottom surface to ratchet directly over the distance of root of the tooth.

7. according to claim 5 or 6 described ball-upsetting equipments, it is characterized in that: ratchet hangs down mutually with the horizontal center line of ratchet and closes, and the ratchet Rear springs has the ratchet cover outward, and shadoof is fixed on ratchet and puts, and adjusting nut is equipped with in the ratchet rear end.