CN103191964B

CN103191964B - Servo direct-drive type incremental rolling forming process for cylindrical piece with teeth inside and outside

Info

Publication number: CN103191964B
Application number: CN201310081176.XA
Authority: CN
Inventors: 赵升吨; 李泳峄; 范淑琴
Original assignee: Xian Jiaotong University
Current assignee: Xian Jiaotong University
Priority date: 2013-03-14
Filing date: 2013-03-14
Publication date: 2015-01-14
Anticipated expiration: 2033-03-14
Also published as: CN103191964A

Abstract

The invention relates to a servo direct-drive type incremental rolling forming process for a cylindrical piece with teeth inside and outside. The process comprises the following steps: sleeving the blank of the cylindrical piece on a core mold; axially feeding to a high-frequency induction heater under driving of a composite alternating current servo motor and heating quickly; continuously and axially feeding to the rolling position of 3 to 6 rolling molds which are circumferentially and uniformly distributed along the axis of the blank, wherein the rolling molds are driven by an adjusting alternating current servo motor to radially feed and driven by a main power alternating servo motor, and the blank and the core mold are driven by the composite alternating current servo motor simultaneously; gradually finishing incremental rolling forming of the cylindrical piece with teeth inside and outside under the action of the rolling molds; withdrawing the blank reversely; and unloading. The process has the advantages of simple process system, high control precision, small forming force, high forming quality, wide processing range and the like.

Description

A kind of servo direct driving type increment Roll-forming processes of interior tyre tooth cylindrical member

Technical field

The invention belongs to advanced Metal Forming and numerical control formation apparatus field, be specifically related to a kind of servo direct driving type increment Roll-forming processes of interior tyre tooth cylindrical member.

Background technology

Inside and outside toothed cylindrical member mainly comprises clutch housing, sliding sleeve, the engaging tooth shape of drive and planetary gear internal tooth etc., is usually applied in the fields such as automobile, boats and ships, space flight and aviation.Along with the development of modern manufacturing industry, part production technology and serviceability are had higher requirement.

Existing interior tyre tooth cylindrical member processing technology, mainly contains traditional machining and extruding, mould pressing processing.Wherein machining is based on Gear Shaping, but complex procedures, working (machining) efficiency are low; Extrusion molding processing then has the defective workmanships such as plastic force is large, profile of tooth filling quality difference; Mould pressing processing then has process system complexity, need adopt the deficiencies such as multi-pass spinning.

Medium-high frequency induction heating technology, most being used for multiple fields such as the quenching of Industrial Metal piece surface, Metal Melting, bar be diathermanous, is make piece surface produce certain induced-current, rapid heated components coating metal, reach top layer to heat rapidly, and the effect that the temperature rise of heart portion is less.

Summary of the invention

In order to overcome the shortcoming of above-mentioned existing technique, the object of the present invention is to provide a kind of servo direct driving type increment Roll-forming processes of interior tyre tooth cylindrical member, there is the advantage that plastic force is little, working (machining) efficiency is high, operation is simple, technological flexibility is strong, applied widely, easy to operate.

In order to achieve the above object, the technical scheme that the present invention takes is:

A servo direct driving type increment Roll-forming processes for interior tyre tooth cylindrical member, it comprises the following steps:

A), using the inside and outside cylindrical member being the face of cylinder as blank 1, according to blank 1 material and tooth-shape structure, cold forming, warm working or hot forming is taked to carry out rollforming processing;

B), by blank 1 be enclosed within the core 2 with external tooth form, and fixed by trip bolt 3, then under the driving of complex AC servomotor 4, core 2 is with blank 1 axial feed, until blank 1 enters the inner chamber of medium-high frequency induction heater 5;

C), by medium-high frequency induction heater 5 pairs of blank 1 surface metals quickly heat up to preset temperature, the heat time is 5sec ~ 15sec, and preset temperature is 400 DEG C ~ 750 DEG C;

D), blank 1 continues axial feed, until enter the rolling position along uniform 3 ~ 6 rolling dies 6 of blank 1 circumference;

E), rolling die 6 and slide 7 are under the driving of respective adjustment AC servo motor 8 and ball guide screw nat 9, along guide rail 10 radial feed to specifying rolling position, and driven by respective active force AC servo motor 11 and Hooks coupling universal coupling 12, start synchronous, synchronized, rotating in same direction, rotating speed is 50RPM ~ 100RPM, simultaneously blank 1 and core 2 axial feed synchronous axial system under the driving of complex AC servomotor 4, feed speed is 1 ~ 5mm/sec, rotating speed is 100RPM ~ 200RPM, completes the rollforming of interior tyre tooth cylindrical member gradually;

F), when rolling complete, rolling die 6 and slide 7 exit in the other direction, and complex AC servomotor 4 is return with the blank 1 be shaped and core 2, unloads forming workblank 1, complete.

The present invention has the following advantages:

1, before blank carries out increment rollforming, carry out medium-high frequency eddy-current heating to the surface metal that need be out of shape, improve the plasticity of metal material, reduce plastic force, expand the range of work, the efficiency of heating surface is high.

2, interior tyre tooth cylindrical member is in rolling process, and acted on by 3 ~ 6 rolling dies 6, belong to increment type plastic deformation, plastic force is little, and forming accuracy is high simultaneously, and surface quality is good.

3, the rolling die 6 in increment rolling process and the motion of blank 1 realize by AC servo motor, and process system is simple, and flexibility is strong, and control accuracy is high, easy to operate.

4, this technique can toothed cylindrical member or only have the cylindrical member of internal tooth or external tooth inside and outside rolling.

Accompanying drawing explanation

Fig. 1 is process principle figure of the present invention.

Fig. 2 is rolling die of the present invention (3) layout.

Fig. 3 is rolling die schematic diagram of the present invention.

Fig. 4 is interior tooth cylindrical member in addition after the present invention is shaped.

Detailed description of the invention

Below in conjunction with drawings and Examples, the present invention is described in detail.

With reference to Fig. 1, the device realizing present invention process comprises core 2 and complex AC servomotor 4, blank 1 is fixed on core 2 by trip bolt 3, core 2 is connected with complex AC servomotor 4, medium-high frequency induction heater 5 layout is in the front of complex AC servomotor 4, at the rear of medium-high frequency induction heater 5 along uniform 3 rolling dies 6 of blank 1 circumference, rolling die 6 is arranged on slide 7, slide 7 is connected with adjustment AC servo motor 8 by roller screw nut secondary 9, rolling die 6 rear is connected with active force AC servo motor 11 by Hooks coupling universal coupling 12.

A servo direct driving type increment Roll-forming processes for interior tyre tooth cylindrical member, comprises the following steps:

A), with reference to Fig. 1, using the inside and outside cylindrical member being the face of cylinder as blank 1, according to blank 1 material and tooth-shape structure, cold forming, warm working or hot forming is taked to carry out rollforming processing;

B), with reference to Fig. 1, be enclosed within by blank 1 on the core 2 with external tooth form, and fixed by trip bolt 3, then under the driving of complex AC servomotor 4, core 2 is with blank 1 axial feed, until blank 1 enters the inner chamber of medium-high frequency induction heater 5;

C), with reference to Fig. 1, quickly heat up to preset temperature by medium-high frequency induction heater 5 pairs of blank 1 surface metals, the heat time is 5sec ~ 15sec, and preset temperature is 400 DEG C ~ 750 DEG C;

D), see figures.1.and.2, blank 1 continues axial feed, until enter the rolling position along uniform 3 rolling dies 6 of blank 1 circumference;

E), with reference to Fig. 1, Fig. 2 and Fig. 3, rolling die 6 and slide 7 are under the driving of respective adjustment AC servo motor 8 and ball guide screw nat 9, along guide rail 10 radial feed to specifying rolling position, and driven by respective active force AC servo motor 11 and Hooks coupling universal coupling 12, start synchronous, synchronized, rotating in same direction, rotating speed is 50RPM ~ 100RPM, simultaneously blank 1 and core 2 axial feed synchronous axial system under the driving of complex AC servomotor 4, feed speed is 1 ~ 5mm/sec, rotating speed is 100RPM ~ 200RPM, complete the rollforming of interior tyre tooth cylindrical member gradually, I section wherein on rolling die 6 shaping completing cylindrical member internal tooth form, II section of shaping completing cylindrical member external tooth form,

F), with reference to Fig. 1, Fig. 2 and Fig. 4, when rolling is complete, rolling die 6 and slide 7 exit in the other direction, and complex AC servomotor 4 is return with the blank 1 be shaped and core 2, unloads forming workblank 1, complete.

Claims

1. a servo direct driving type increment Roll-forming processes for tyre tooth cylindrical member in, is characterized in that, comprise the following steps:

A), using the inside and outside cylindrical member being the face of cylinder as blank (1), according to blank (1) material and tooth-shape structure, warm working or hot forming is taked to carry out rollforming processing;

B), blank (1) is enclosed within the core (2) with external tooth form, and fixed by trip bolt (3), then under the driving of complex AC servomotor (4), core (2) is with blank (1) axial feed, until blank (1) enters the inner chamber of medium-high frequency induction heater (5);

C), by medium-high frequency induction heater (5) quickly heat up to preset temperature to blank (1) surface metal, the heat time is 5sec ~ 15sec, and preset temperature is 400 DEG C ~ 750 DEG C;

D), blank (1) continues axial feed, until enter the rolling position along uniform 3 ~ 6 rolling dies (6) of blank (1) circumference;

E), rolling die (6) and slide (7) are under the driving of respective adjustment AC servo motor (8) and ball guide screw nat (9), along guide rail (10) radial feed to specifying rolling position, and driven by respective active force AC servo motor (11) and Hooks coupling universal coupling (12), start synchronous, synchronized, rotating in same direction, rotating speed is 50RPM ~ 100RPM, simultaneously blank (1) and core (2) axial feed synchronous axial system under the driving of complex AC servomotor (4), feed speed is 1 ~ 5mm/sec, rotating speed is 100RPM ~ 200RPM, complete the rollforming of interior tyre tooth cylindrical member gradually,

F), when rolling is complete, rolling die (6) and slide (7) exit in the other direction, complex AC servomotor (4) is return with the blank be shaped (1) and core (2), unload forming workblank (1), complete.