CN100503151C - Clamping apparatus for slush pump crankshaft lathe process and lathe processing method - Google Patents

Abstract

The invention relates to a clamping fixture for the turning processing of a slime pump crank shaft and a turning processing method, the clamping fixture comprises a barrel body, an upper top plate, and a lower bottom plate which are fixed and connected, the upper top plate has a central line and an eccentric circular hole rabbet which is biased with the return central line of the barrel body and has the same bias with a return crank of the slime pump crank shaft, a positioning pin hole is arranged close to the eccentric circular hole rabbet on the upper plate, and a plurality of clamping plates are connected and can be removed on the outside of the periphery of the eccentric circular hole rabbet of the upper plate. When the slime pump crank shaft is processed by the turning method by utilizing the clamping fixture, a gear connecting disc of a coaxial line of the crank shaft neck is installed on the eccentric circular hole rabbet, the return center of the clamping fixture is matched together with a center line of a chief axis of a machine tool, when the crank shaft is rotated into a suitable angle, the center line of the return crank which needs to be processed can coincide with the return center line of the barrel of the clamping fixture, and the return crank ex-circle and the end surface can be processed. The clamping fixture has the advantages that the installation and the clamping of a work piece are convenient, the clamping disc of the machine tool needs no counter balancer, the machining accuracy is not affected, no additional machine tool power is consumed, and the operation efficiency is high.

Description

Slush pump bent axle clamp for turning and method for turning

Technical field

The present invention relates to Machining Technology, specifically be a kind of slush pump bent axle clamp for turning and use these anchor clamps and carry out slush pump bent axle turning method for processing.

Background technology

Bent axle is one of vital part of slush pump, also is one of the most unmanageable workpiece.Fig. 1, shown in Figure 2 be to have the perspective view that is the single-acting triplex mud pump bent axle of three returnning 1a, 1b that 120 degree angles distribute, 1c at circumferencial direction, trunnion 1e, 1f are the supporting parts of bent axle, gear terminal pad 1d and trunnion coaxial line, its edge is uniformly distributed with some being used for and the bolted hole 1g of travelling gear along the circumference, the travelling gear transferring power drives bent axle, and all the other positions are shape transition structures on the bent axle.Owing to the particularity of three returnning 1a, 1b, 1c arranged off-centre, its cylindrical and end face are machined to the difficult point into bent axle processing.In the known technology, the processing of slush pump bent axle is finished on horizontal lathe, in the process of processing returnning, earlier with crankshaft installed on chuck, again the centre of gyration of returnning to be processed is adjusted to the centre of gyration of machine tool chief axis, depart from the imbalance problem that the machine tool chief axis centre of gyration brings for overcoming bent axle mass centre, need carry out counterweight to machine chuck, and very difficult assurance dynamic balancing after the counterweight, cause machining accuracy low, simultaneously also consume the lathe more power, and operating efficiency is low.

Summary of the invention

The purpose of this invention is to provide a kind of slush pump bent axle clamp for turning and use these anchor clamps and carry out slush pump bent axle turning method for processing, use these anchor clamps and adopt this method to carry out slush pump bent axle turning processing, anchor clamps installation and clamping workpiece are easy, machine chuck does not need counterweight, do not influence machining accuracy, additive decrementation machine power not, high efficiency.

Realize that the technical scheme that the object of the invention adopts is:

A kind of slush pump bent axle clamp for turning, it is characterized in that: be formed by fixedly connecting by cylindrical shell, upper plate and lower shoe, have center line and returnning amount of bias identical eccentric circular hole seam amount of bias and slush pump bent axle biasing on the described upper plate with cylindrical shell centre of gyration line, the eccentric circular hole seam is other on the described upper plate has a dowel hole, and the eccentric circular hole seam periphery outside is removably connected with some pressing plates on the described upper plate.

Also have center line and returnning amount of bias identical eccentric circular hole seam amount of bias and another slush pump bent axle biasing on the described lower shoe with cylindrical shell centre of gyration line, eccentric circular hole seam side has a dowel hole on the described lower shoe, when described anchor clamps turned upside down make lower shoe be positioned at above the time, the eccentric circular hole seam periphery of the lower shoe outside some pressing plates that removably connect.

Also has another eccentric circular hole seam that the amount of bias according to the returnning of other slush pump bent axles is provided with on described upper plate and the lower shoe respectively.

The above-mentioned anchor clamps of a kind of application carry out slush pump bent axle turning method for processing, it is characterized in that: comprise following processing step:

(1) anchor clamps is installed on the chuck of large-scale vertical lathe, the centre of gyration line of anchor clamps cylindrical shell is overlapped with the chuck centre of gyration line of vertical lathe, the anchor clamps chucking is fixed on the chuck with claw;

(2) the gear terminal pad with the slush pump bent axle is contained on the eccentric circular hole seam of anchor clamps, according to the center line of the returnning of slush pump bent axle to be processed angle with respect to dowel hole center on the anchor clamps and the deflection of the cylindrical shell eccentric circular hole seam line of centres, with this angle of crankshaft rotating, make with the gear connecting hole of the same angle of returnning center line deflection to be processed and overlap with dowel hole, thereby realize that the center line of this returnning overlaps with the lathe spindle centre of gyration, between this gear connecting hole and dowel hole, insert alignment pin, use bolt, pressing plate is pressed on the gear terminal pad on the upper plate;

(3) cylindrical of turning returnning to be processed and end face;

(4) extract alignment pin, unclamp bolt, pressing plate, the center line of adjusting other returnnings to be processed with quadrat method overlaps with the lathe spindle centre of gyration, the cylindrical and the end face of clamping bent axle, processing returnning to be processed;

(5) extract alignment pin, unclamp bolt, pressing plate, bent axle is reversed end for end up and down to install, with the cylindrical and the end face of the returnning of quadrat method processing tune anteposition below the gear terminal pad, up to whole returnning completion of processing.

Anchor clamps of the present invention are provided with the eccentric circular hole seam of relative cylindrical shell centre of gyration biasing, and make amount of bias identical with the amount of bias of the returnning of bent axle, use anchor clamps of the present invention and adopt the inventive method to carry out the turning of slush pump bent axle and add man-hour, to be installed in the gear terminal pad of maneton coaxial line on the eccentric circular hole seam, anchor clamps guarantee its centre of gyration and machine tool chief axis central lines when installing on lathe, by bent axle being rotated suitable angle, can be the machine tool chief axis central lines with the center line and the anchor clamps cylindrical shell centre of gyration line of returnning to be processed, locate with bearing pin then, pressing plate can carry out returnning cylindrical and end face processing after compressing the slush pump bent axle, bent axle mass centre departs from the imbalance problem that the machine tool chief axis centre of gyration brings on the gravity direction owing to not existing, having solved the prior art returnning processes on horizontal lathe, need be on chuck counterweight, cause dynamic balancing to be difficult to guarantee, machining accuracy is low, simultaneously also consume the lathe more power, and ineffective problem.Respectively be provided with two eccentric circular hole seams on anchor clamps upper plate of the present invention and the lower shoe, upper plate is relative with the lower shoe position, after transposition is put upside down installation about these anchor clamps, these anchor clamps slush pump bent axle of four kinds of specifications of clamping are respectively processed, improve the utilization rate of anchor clamps, saved the manufacturing expense of anchor clamps.

Description of drawings

Fig. 1 is a slush pump bent axle perspective view.

Fig. 2 is Fig. 1 vertical view, expresses three returnning biasing situations and gear terminal pad structure.

Fig. 3 is a clamp structure schematic diagram of the present invention.

Fig. 4 is a fixture application schematic diagram of the present invention.

The specific embodiment

With the example that is processed as of Fig. 1, the single-acting triplex mud pump bent axle with three returnning 1a, 1b, 1c shown in Figure 2, the present invention is further described below.

As shown in Figure 3, anchor clamps of the present invention are by circular cylinder body 2a, upper plate 2b, lower shoe 2e assembly welding forms, on the upper plate 2b respectively own centre line and circular cylinder body 2a centerline offset and amount of bias be respectively Δ 1, the eccentric circular hole seam 2c of Δ 2,2d, amount of bias Δ 1, Δ 2 is respectively the amount of bias of the slush pump returnning of two kinds of specifications, there is a dowel hole 3 on the eccentric circular hole seam next door of upper plate 2b, the eccentric circular hole seam periphery outside is connected with some pressing plates 4, for guaranteeing the integral rigidity of anchor clamps, at circular cylinder body 2a outer wall and upper plate 2b, be welded with some gusset 2f between the lower shoe 2e.Lower shoe 2e also has two eccentric circular hole seams.

As Fig. 4, Fig. 1, shown in Figure 2, when on the large-scale vertical lathe, processing the slush pump bent axle, the employing following steps are carried out: 1. these anchor clamps are installed on the large-scale vertical lathe chuck 6, the center line of the circular cylinder body 2a of anchor clamps is overlapped with the chuck centre of gyration of vertical lathe, the anchor clamps chucking is fixed on the chuck 6 with claw 5; 2. the gear terminal pad 1d with the slush pump bent axle is contained on the eccentric circular hole seam 2c of anchor clamps, center line according to returnning 1a is spent angles with respect to 120 of 3 centers of dowel hole on the anchor clamps and the deflection of the eccentric circular hole seam 2c line of centres, with crankshaft rotating 120 degree, make with the gear connecting hole 1g of the same angle of returnning 1a center line deflection and overlap with dowel hole 3, thereby the center line of realizing returnning 1a overlaps with the lathe spindle centre of gyration, between gear connecting hole 1g and dowel hole 3, insert alignment pin, use bolt, pressing plate 4 is pressed on gear terminal pad 1d on the upper plate 2b; 3. the cylindrical of turning returnning 1a and end face; 4. extract alignment pin, unclamp bolt, pressing plate 4, bent axle 1 is reversed end for end up and down to install, with center line and lathe chuck central lines and the clamping bent axle of quadrat method adjustment returnning 1b, cylindrical and the end face of turning returnning 1b; 5. extract alignment pin, unclamp bolt, pressing plate 4, with center line and lathe chuck central lines and the clamping bent axle of quadrat method adjustment returnning 1c, cylindrical and the end face of turning returnning 1c, all returnning completion of processing.

Upper plate is relative with lower roof plate, after transposition is put upside down installation up and down with these anchor clamps, lower shoe 2e becomes upper plate, and two eccentric circular hole seams on the lower shoe 2e can be used for processing behind the slush pump bent axle clamping of other two kinds of different sizes, have improved the utilization rate of these anchor clamps.

Claims (4)

1, a kind of slush pump bent axle clamp for turning, it is characterized in that: be formed by fixedly connecting by cylindrical shell, upper plate and lower shoe, have center line and returnning amount of bias identical eccentric circular hole seam amount of bias and slush pump bent axle biasing on the described upper plate with cylindrical shell centre of gyration line, the eccentric circular hole seam is other on the described upper plate has a dowel hole, and the eccentric circular hole seam periphery outside is removably connected with some pressing plates on the described upper plate.

2, slush pump bent axle clamp for turning according to claim 1, it is characterized in that: also have center line and returnning amount of bias identical eccentric circular hole seam amount of bias and another slush pump bent axle biasing on the described lower shoe with cylindrical shell centre of gyration line, eccentric circular hole seam side has a dowel hole on the described lower shoe, when described anchor clamps turned upside down make lower shoe be positioned at above the time, the eccentric circular hole seam periphery of the lower shoe outside some pressing plates that removably connect.

3, as slush pump bent axle clamp for turning as described in the claim 2, it is characterized in that: also have another eccentric circular hole seam that the amount of bias according to the returnning of other slush pump bent axles is provided with on described upper plate and the lower shoe respectively.

4, a kind of application rights requires 1 described slush pump bent axle clamp for turning to carry out slush pump bent axle turning method for processing, it is characterized in that: comprise following processing step:

(1) anchor clamps is installed on the chuck of large-scale vertical lathe, the centre of gyration line of anchor clamps cylindrical shell is overlapped with the chuck centre of gyration line of vertical lathe, the anchor clamps chucking is fixed on the chuck with claw;

(2) the gear terminal pad with the slush pump bent axle is contained on the eccentric circular hole seam of anchor clamps, according to the center line of the returnning of slush pump bent axle to be processed angle with respect to dowel hole center on the anchor clamps and the deflection of the cylindrical shell eccentric circular hole seam line of centres, with this angle of crankshaft rotating, make with the gear connecting hole of the same angle of returnning center line deflection to be processed and overlap with dowel hole, thereby realize that the center line of this returnning overlaps with the lathe spindle centre of gyration, between this gear connecting hole and dowel hole, insert alignment pin, use bolt, pressing plate is pressed on the gear terminal pad on the upper plate;

(3) cylindrical of turning returnning to be processed and end face;

(4) extract alignment pin, unclamp bolt, pressing plate, the center line of adjusting other returnnings to be processed with quadrat method overlaps with the lathe spindle centre of gyration, the cylindrical and the end face of clamping bent axle, processing returnning to be processed;

(5) extract alignment pin, unclamp bolt, pressing plate, bent axle is reversed end for end up and down to install, with the cylindrical and the end face of the returnning of quadrat method processing tune anteposition below the gear terminal pad, up to whole returnning completion of processing.

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