CN1597199A

CN1597199A - Piston top curved surface processing device for verticle lathe

Info

Publication number: CN1597199A
Application number: CN 200410035693
Authority: CN
Inventors: 尹相栋; 杜淑凤
Original assignee: Qingdao Port Group Co Ltd
Current assignee: Qingdao Port Group Co Ltd
Priority date: 2004-09-14
Filing date: 2004-09-14
Publication date: 2005-03-23
Anticipated expiration: 2024-09-14
Also published as: CN1289246C

Abstract

A mechanism of vertical lathe for machining the curved surface on the top of piston is composed of vertical tool carrier, copying plate for said curved surface, linkage plate, power cylinder on said linkage plate, slide plate sliding up and down for installing tool carrier on it, and fulcrum with curved arm, lateral branch arm and lower branch arm.

Description

Vertical lathe top land curvature generator

Technical field

The invention belongs to the machined frock, specifically a kind of on vertical lathe turning repair the device of the bent end face of piston.

Background technology

The freighter that at sea travels, the piston diameter of its diesel engine big generally about 0.4-1 rice, top land mostly is a concave curvatures.When diesel engine igniting outburst, the top concave curved surface of piston can bear the high temperature of thousands of degree, and serious corrosion pitting will occur service time greatly about about 1 year, make slick and sly excessive concave curved surface rough and uneven in surface, influences the normal operation of diesel engine.And buy the piston of above-mentioned use for diesel engine 1 rice diameter, whenever as long as about 100,000 yuan, so after top land is etched, generally all be after repairing, to re-use.General repair shop does not also process the equipment of the recessed bent end face of above-mentioned piston, though Digit Control Machine Tool energy turning curved surface, but its personal value millions of and even up to ten million units often allow prestige and step back, moreover repairing the processing workpiece not too high as the piston-top surface precision prescribed with large-scale precision equipment like this, is a kind of great waste.

The way of top land concave curved surface repairing at present, can only be piston to be erect be clipped on the turntable of common vertical lathe, with the hands operate lathe feed in length and breadth, with the processing repair work of manually finishing curved surface, its labour intensity is big, the processing effect is low, and surface accuracy and surface roughness that car goes out do not reach requirement, also will manually make its any surface finish with frustrating cutter polishing repairing, measure the precision of curved surface simultaneously with clamp, therefore can't guarantee repairing quality, also just can't guarantee the normal operation of diesel engine; Owing to the precision and the surface smoothness that can not guarantee to repair, use very short a period of time to scrap.Like this, cargo ship travels in boundless sea on the one hand, in case the consequence that breaks down is hardly imaginable; On the other hand, just scrap without repairing if piston that will be very expensive is etched the back at end face, its economic loss can be very big.General major port, annual tjemplon entering and leaving port number of times is at up to ten thousand times, and used diesel engine generally is 6 cylinders, calculates by annual the repairing once, and the piston of each turnover major port freighter is repaired important about 60,000/year.

Summary of the invention

Technical problem to be solved by this invention is, the precision and the surface roughness that overcome manual feed repairing enlarged bore piston concave curved surface top in the prior art do not reach requirement, and the shortcoming that effect is low, labour intensity is big, a kind of vertical lathe that uses on common vertical lathe top land curvature generator is provided.

In order to solve the problems referred to above that prior art exists, the present invention adopts following technical proposals to realize: in the upright knife rest lower end of vertical lathe, erect and be fixed with half the identical master plate of shape of its base and top land shaft section; On the side tool post side elevation of vertical lathe, be fixed with yoke plate, the surface of yoke plate is horizontally installed with the power cylinder that its piston push rod points to upright knife rest, upright knife rest one end of the nearly vertical lathe in surface of yoke plate, the slide plate that can slide vertically on the plate face is installed, the top of slide plate has projection, on the plate face of slide plate knife rest is installed; Be fixed with fulcrum perpendicular to the yoke plate face, be with the bending connecting lever on it, the bending connecting lever is connected with and makes side support arm that slide plate slides up and down and promote to make the rotating lower branch arm of connecting lever by piston push rod.

During use, on the knife rest on the vertical slide plate of yoke plate, press thereon with the lathe tool that the push type broach screw is downward with cutter head, horizontal mobile side tool post, make the projection at slide plate top lean against with the same master plate base of top land curved surface on, cutter head is at the outer edge that is installed on vertical lathe turntable upper piston top curve surface, starting the vertical lathe turntable rotates, side tool post crosses feed, simultaneously to the power cylinder transmitting power, make piston rod push the lower branch arm of bending connecting lever by the piston in the power cylinder, drive the connecting lever revolution and rotate, drive the side support arm and force the projection at slide plate top to abut against on the master plate base; When the side tool post feed, slide plate drives the curve feed on the suitable master plate base of lathe tool of installing on its knife rest, can go out the curved surface same with the original end face of piston by car.

Advantage of the present invention and good effect are, because above-mentioned turning is contour turning, and the piston top surface accuracy height after turning is repaired; Because without the manual feed of people, as long as after determining the feed and the depth of cut, feed is to be finished by mechanical action according to the curve shape on master plate base fully, the amount of labour is little and effect is high, machinery feed turning is even, the curved surface roughness that car goes out conforms with quality requirement, and the piston after the repairing uses as new, can prolong one service life doubly at least.

In one major port year the entering and leaving port tjemplon number of times at 10,000 times, the piston repairing amount of its diesel engine is calculated with 1/20,500 ships just have 3000 pistons to need to repair.Buy 100,000 yuan in a piston, calculate to repair a service life that prolongs 1 year, behind the removal repair cost, year more than one hundred million units of saving worth up to.And the frock expense of overlapping above-mentioned processing repairing piston of will making is come with respect to the value of repairing piston, just can ignore and not remember, so repair cost is very low, and the afloat safety of cargo ship engine is normally moved after guaranteeing the piston repairing.

Description of drawings

Fig. 1 is installation site of the present invention and partial sectional view;

Fig. 2 is a partial sectional view of the present invention;

Fig. 3 is the A-A profile of Fig. 2;

Fig. 4 is the B-B profile of Fig. 2;

Fig. 5 is the C-C profile of Fig. 2.

The specific embodiment

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

Among Fig. 1,, be fixed with half the identical master plate 1 of shape of its base 1.1 and top land shaft section 15 in the lower end of the upright knife rest 2 of vertical lathe; On the side elevation of vertical lathe side tool post 8, be fixed with the horizontal yoke plate 10 parallel with master plate 1, its fixed form is that the plane 10.5 with yoke plate 10 back sides leans against on the side elevation of side tool post 8, set bolt 10.3 passes the hole on the boss 10.2 above it from the quilt cover of yoke plate 10, use nut screwing clamping, simultaneously the right side of yoke plate 10 leans against on the positioning table 10.4 of side tool post 8 (referring to Fig. 3);

On yoke plate 10, crosswise fixed is equipped with the power cylinder 12 that its piston push rod 7 points to upright knife rest 2, the installation of power cylinder 12 be with its cylinder body lateral seat with the conjuncted cylinder seat 10.6 of yoke plate 10 in, fixedly connected with internal and external threads, the left end of piston push rod 7 be bearing in the conjuncted guide pin bushing 10.1 of yoke plate 10 in (referring to Fig. 2, Fig. 5).Described power cylinder 12 can be the cylinder that is connected with the expansion box of air compressor, also can be the hydraulic cylinder that is connected with oil pump, and the termination of power cylinder 12 is connected with expansion box or oil pump with inlet tube 13;

Left end at yoke plate 10, the slide plate 18 that can slide vertically is installed, slide plate 18 is that recessed dovetail guide 18.2 (referring to Fig. 3) guiding by the protruding dovetail guide 4.1 on slide plate base 4 tops and slide plate 18 bottoms slides up and down, and is provided with the projection 18.3 on the base 1.1 that can withstand on master plate 1 at the top of slide plate 18; Friction for 1.1 on the base of projection 18.3 end faces that reduce slide plate 18 tops and master plate 1 is equipped with the roller 3 that exceeds its end face at the top of projection 18.3.

The piston that end face 15 makes progress is erect and is fixed on the vertical lathe turntable 14, and knife rest 17 is installed on the slide plate 18, and the cutter head subtend piston-top surface 15 of lathe tool 16 is installed on the knife rest 17;

Plate face middle part at yoke plate 10, be fixed with fulcrum 6 perpendicular to the plate face, middle bending connecting lever 5 with holes can about be enclosed within pivotally on the fulcrum 6, connecting lever 5 is provided with mutual side support arm 5.3 and lower branch arm 5.4 at angle, the termination of side support arm 5.3 is provided with the bulb 5.1 that can reduce resistance when rotating, bulb 5.1 is inserted in the horizontal allocating slot 18.1 of the right-end openings that slide plate 18 tops are provided with, and the bulb 5.2 of lower branch arm 5.4 ends is inserted in the groove 7.1 that the piston push rods 7 in the guide pin bushing 10.1 are provided with (referring to Fig. 4).Piston 11 in the power cylinder 12 promotes the bulb 5.2 of lower branch arm 5.4 ends by piston push rod 7, will make connecting lever 5 rotate an angle around fulcrum 6, side support arm 5.3 is rotated thereupon, make on the side support arm 5.3 bulb in allocating slot 18.1 5.1 stir slide plate 18, make on its curve base 1.1 that abuts against top master plate 1.

The bulb 5.2 that piston push rod 7 promotes lower branch arm 5.4 ends makes connecting lever 5 revolutions, can also be finger to be installed as end at lower branch arm 5.4, modes such as the dial hole on the finger insertion piston push rod 7 is interior, slide plate 18 is stirred in the end of side support arm 5.3 can take other modes too.

This device can also be used in the cylindricality workpiece of other band curved top surface of turning on the vertical lathe.

Claims

1, a kind of vertical lathe top land curvature generator is characterized in that: in the upright knife rest lower end of vertical lathe, erect and to be fixed with half the identical master plate of shape of its base and top land shaft section; On the side tool post side elevation of vertical lathe, be fixed with yoke plate, the surface of yoke plate is horizontally installed with the power cylinder that its piston push rod points to upright knife rest, upright knife rest one end of the nearly vertical lathe in yoke plate surface, the slide plate that can slide vertically on the plate face is installed, the top of slide plate has projection, on the plate face of slide plate knife rest is installed; Perpendicular to the fixing fulcrum of yoke plate face, be with the bending connecting lever on it, connecting lever is connected with and makes side support arm that slide plate slides up and down and promote to make the rotating lower branch arm of connecting lever by piston push rod.

2, vertical lathe as claimed in claim 1 top land curvature generator is characterized in that: described power cylinder is the cylinder that is connected with the expansion box of air compressor.

3, vertical lathe as claimed in claim 1 top land curvature generator is characterized in that: described power cylinder is the hydraulic cylinder that is connected with oil pump.

4, vertical lathe as claimed in claim 1 top land curvature generator is characterized in that: the roller that exceeds projection is installed on the projection at the top of slide plate.

5, vertical lathe as claimed in claim 1 top land curvature generator, it is characterized in that: described bending connecting lever is connected with the side support arm that slide plate is slided up and down, be to be provided with bulb in the termination of side support arm, bulb is inserted in slide plate top and is provided with in the horizontal allocating slot of a direction of principal axis opening.

6, vertical lathe as claimed in claim 1 top land curvature generator, it is characterized in that: described bending connecting lever is connected with the lower branch arm that is promoted by piston push rod, wear on being in the guide pin bushing of piston push rod expansion bearing on yoke plate of groove, the bulb of lower branch arm termination is inserted in the groove.