CN102223027A

CN102223027A - Casting technology for gyroscope motor rotor

Info

Publication number: CN102223027A
Application number: CN2011101581111A
Authority: CN
Inventors: 施小弟; 施国春; 周兴宝
Original assignee: Wujiang Tianlong Machinery Co Ltd
Current assignee: Wujiang Tianlong Machinery Co Ltd
Priority date: 2011-06-14
Filing date: 2011-06-14
Publication date: 2011-10-19

Abstract

The invention provides a casting technology for a gyroscope motor. In the invention, a 140T cold chamber die casting machine is selected; a central technological sprue is arranged; die-casting technological parameters such as aluminium melting temperature, mold temperature and the like can be controlled; simultaneously a strong release agent is used in the die casting technology, thus realizing the aim of manufacturing the gyroscope motor rotor by adopting a die casting process method. The mold design adopts a two-step parting way; multi-point material inlets can be fed from 6 small holes of an inserting part so that the aluminium alloy fills a mold cavity under high pressure and can be crystallized and solidified under high pressure. Before the product is produced, the die casting technology is compiled so that a die casting operator can adjust reasonable parameters, strictly comply with the technology to guide production, and ensure that the product has good organization compactability, has no shrunk holes, air holes and slag and has good mechanical performance. The casting technology has the advantages of reducing subsequent machining margin, saving material, reducing cost, avoiding secondary environmental pollution, eliminating potential safety hazard, and improving productivity.

Description

A kind of gyroscope motor casting technique

Technical field

The present invention relates to the gyroscope field of motor manufacturing, especially a kind of high-pressure casting process of improved gyroscope motor.

Background technology

As everyone knows, in the gyroscope field of motor manufacturing, traditional gyro machine rotor forms casting process one, and this operation is to use the method for vertical centrifugal casting to finish.Concrete process is the casting mold that aluminium alloy book solution that refining is later injects rotation, running up by centrifugal force and make the aluminium alloy of fusion be filled into rotor pack and pressure ring gap, cooling curing shape then fully by casting machine.This technology mode exists significant disadvantages, and on the one hand because the external diameter of rotor only has the 30mm diameter, length overall is less than 25mm, and the cast(ing) surface of utilization centre spinning method is more coarse, and the inner surface size is wayward, needs to increase endoporus allowance; On the other hand, centrifugal casting technique must reach more than per minute 4800 commentaries on classics because of the speed of centrifugal casting machine, mold line speed is about 35m/s, the aluminum solutions temperature is up to 720 ℃, operation produces noise, and need three people to finish above common the cooperation, operating personnel's 15 minutes recirculation operation of must continuous operation having a rest after 45 minutes, the mechanically actuated operation process makes operating personnel's thought paralysis produce quality accident easily for a long time, not only waste of manpower of such operation, and certainly exist quality and safe hidden danger.

Summary of the invention

The tissue odds, the rate of finished products that exist for the spun casting of solution gyroscope motor are low, and there are a series of problems of potential safety hazard in operating process, need a kind of improved gyroscope motor Hpdc technology, adopt this new process, can substitute the centrifugal casting operation, improve some drawbacks of centrifugal casting, improve the quality of products and operating efficiency, and stop production safety hidden danger.

For solving the problems of the technologies described above, the present invention is achieved by the following technical solutions:

1. die casting production overall process is finished automatically by die casting machine.The present invention selects the 140T cold-chamber die casting machine, and center technology cast gate is set,

Extrusion process parameters such as the molten aluminium temperature of control, mould temperature during die casting are used methods such as powerful release agent simultaneously, thereby are realized adopting die-casting process method to make gyroscope motor in extrusion process.The establishment of Mould design and production technology is the key of production assurance thus.Save manpower on the one hand, also ensured the handling safety of production line on the other hand.

2. twice parting is taked in mold design, and the charging from 6 apertures of mold insert of multiple feed mouth makes aluminium alloy under high pressure fill die cavity, and crystallization and freezing under high pressure.Before production, worked out extrusion process, make the die casting operative employee regulate Reasonable Parameters, instruct in strict accordance with technology and produce, guarantee that dense structure's property of product is good, no shrinkage cavity, pore, slag inclusion, good mechanical property.

By technology of the present invention, can obviously solve the problems such as dynamic balancing of fine aluminium under ideal filling, even tissue and the fast state between silicon steel sheet; Simultaneously, observe the quality requirement that the foundry goods internal soundness reaches part fully, do not have pore, the oxidation lime-ash through the turning method for processing, be mingled with, situations such as crackle have reduced the following process surplus, save material, reduced cost, guaranteed product quality stability.Avoid secondary environmental pollution, eliminated potential safety hazard, improved productivity ratio.

Embodiment

A kind of gyroscope motor casting technique of the present invention uses equipment to be the 14OT cold-chamber die casting machine, and accumulator is a piston type, and energy storage pressure is placed on 12-15MPa, and the specific embodiment of this invention is:

1. debug die casting machine, compression mod, die casting machine system pressure 130T;

2. crucible preheating, temperature are 150-200 ℃, the aluminium ingot melting and purifying, and temperature is 720-760 ℃, is cooled to 700 ℃ after refining finishes;

3. compression mod pressure testing 30-50 mould, make the mould temperature reach 220-250 ℃ after cleaning die cavity and running channel, the mold insert rotor pack is preheated to 75-80 ℃ in baking oven;

4. die cast: spraying release agent → matched moulds → matched moulds time-delay → injection in the die cavity → → somatotype of pressurize time-delay, drift separate with the material handle → and the twice parting product separates → eject with expecting handle that the road processes under pickup → inflow;

5. remove cast gate, repair burr, be up to the standards.

Claims

1. gyroscope motor casting technique is characterized in that may further comprise the steps:

(1) debugging die casting machine, compression mod, die casting machine system pressure 130T;

(2) crucible preheating, temperature are 150-200 ℃, the aluminium ingot melting and purifying, and temperature is 720-760 ℃, is cooled to 700 ℃ after refining finishes;

(3) compression mod pressure testing 30-52 mould, make the mould temperature reach 220-250 ℃ after cleaning die cavity and running channel, the mold insert rotor pack is preheated to 75-80 ℃ in baking oven;

(4) die cast: spraying release agent → matched moulds → matched moulds time-delay → injection in the die cavity → → somatotype of pressurize time-delay, drift separate with the material handle → and the twice parting product separates → eject with expecting handle that the road processes under pickup → inflow;

(5) go cast gate, repair burr, be up to the standards.

2. technology according to claim 1 is characterized in that, selects the 140T cold-chamber die casting machine, center technology cast gate is set, extrusion process parameters such as the molten aluminium temperature of control, mould temperature are used powerful release agent simultaneously, thereby are realized adopting die-casting process method to make gyroscope motor in extrusion process.

3. technology according to claim 1 is characterized in that twice parting is taked in mold design, and the charging from 6 apertures of mold insert of multiple feed mouth makes aluminium alloy under high pressure fill die cavity, and crystallization and freezing under high pressure.