CN1693676A - Manufacturing method of small sized compression impellor - Google Patents

Abstract

This invention is a small compression impellor manufacturing method. First, big excircle, big end face and hole are processed through small end excircle is clamped and is relied on advection road plane. Secondly, big excircle is clamped by three claws and big end face is done to plane to process meridian plane and small end face, all procedures are finished. The consistency of small end excircle and passage is fully used in the first processing to make position reference coincide design reference, so the processing error brought from non coincidence of reference in traditional technique is effectively avoided, and the passing percent is raised to more than 97%. The advantages are simple technology, low cost and high production efficiency.

Description

A kind of manufacture method of small sized compression impellor

Technical field

The present invention relates to a kind of manufacture method of compression impellor of pressurized machine, particularly relate to a kind of manufacture method of small sized compression impellor.

Background technique

Those of ordinary skill of the same trade is all known, compression impellor is more little, its difficulty of processing is big more, add that the rotating speed of pressurized machine own is quite high, therefore, the control of the amount of unbalance of processing back part just becomes very crucial, if amount of unbalance is overproof, will cause phenomenons such as pressurized machine grazing, burn bearing, leakage of oil, off-axis, thereby cause that diesel engine can not be worked etc.Because the characteristic of pressurized machine, dimensional accuracy and form and position tolerance precision that compression impellor itself requires are all quite high, and the requirement that has reaches 4 grades, 5 class precisions, are necessary and necessary so consider processing method.

Traditional compression impellor manufacturing has five processes, is followed successively by: one, with the big cylindrical of three-jaw clamping, centering large end face, rough turn large end face, hole; Two, by advection road end face, the finish turning large end face slightly cuts with scissors, finish reams and then pushes away the hole to size with three-jaw clamping big cylindrical; Three, press from both sides big cylindrical with three-jaw, the car small end face; Four, insert the realization location with axle from big stomidium, with top top center hole, car small end face; Five, insert the realization location, clamp the big cylindrical of finish turning, meridian plane from big stomidium with spring born work arbor.

Said method is imperfect, at first, and three transposing locating basiss in the above-mentioned manufacturing process, run counter to the unifying datum principle, caused cumulative error to increase, and caused that center of mass changes because benchmark repeatedly changes, cause computing ballance correction seriously overweight, scrappage reaches more than 15%; Second, this technology first procedure processing and utilization be big cylindrical location, and be the centering large end face, in fact large end face forms the plane because the casting reason is not necessarily parallel with runner, and big cylindrical is not fully concentric with the runner center in mould, make center of mass's off-centre so cause that the subsequent handling benchmark is inaccurate, thereby computing ballance correction increases and causes part to scrap; The 3rd, the tratitional technology operation is many, and its manufacturing efficiency is low.

Summary of the invention

The object of the present invention is to provide and a kind ofly can effectively improve the quality of processing of compression impellor and the manufacture method of efficient.

Purpose of the present invention can reach by following technical measures, that is: the manufacture method of this compression impellor at first, is pressed from both sides the small end cylindrical and by plane, advection road, processed big cylindrical, large end face, hole; The second, press from both sides big cylindrical, lean on flat large end face with three-jaw, processing meridian plane and small end face, all operations are promptly accused and are finished.First procedure of this manufacture method has made full use of the conformity of small end cylindrical and runner, locating basis and design basis are coincided, avoided effectively in the tratitional technology up-to-standard rate of product being brought up to more than 97% owing to benchmark does not overlap the machining error of bringing; Tratitional technology has 5 procedures, and new process has only two procedures, has reduced the processing and loading clamp time, has shortened the part turnaround time, has reduced equipment and take quantity simultaneously, and corresponding processing personnel have also just reduced, and have improved manufacturing efficiency, have reduced manufacture cost.

Description of drawings

Fig. 1 is the structural drawing of processing object one compression impellor of this manufacture method.

Embodiment

Below with reference to accompanying drawing the specific embodiment of the present invention is further described.

Referring to Fig. 1, the manufacture method of a kind of small sized compression impellor of the present invention, at first, folder small end cylindrical 1 also leans on plane, advection road 3, processes big cylindrical 4, large end face 6, hole 5; The second, press from both sides big cylindrical 4, lean on flat large end face 6, processing meridian plane 2 and small end face 7 with three-jaw.

Claims (1)

1, a kind of manufacture method of small sized compression impellor is characterized in that: at first, folder small end cylindrical (1) also leans on plane, advection road (3), processes big cylindrical (4), large end face (6), hole (5); The second, press from both sides big cylindrical (4), lean on flat large end face (6), processing meridian plane (2) and small end face (7) with three-jaw.