CN100336625C

CN100336625C - Inserted blades worm shaped gear machining cutter

Info

Publication number: CN100336625C
Application number: CNB2004100160929A
Authority: CN
Inventors: 夏建敏; 刘大猷
Original assignee: 夏建敏
Current assignee: Ningbo Xiasha Gears Co., Ltd.
Priority date: 2004-02-03
Filing date: 2004-02-03
Publication date: 2007-09-12
Anticipated expiration: 2024-02-03
Also published as: CN1557591A

Abstract

The present invention relates to a worm-shaped gear processing cutter which is integrally composed of a cutter body, a blade and a fixed ring which are bound and fixed, wherein a spiral body composed of a tooth bottom surface, a spiral surface and a tooth crest surface is arranged on the cutter body which is in the Archimedes basic worm shape; a through groove is arranged in the worm bus bar direction; the through groove can divide the continuous worm spiral body into an independent spiral body cutter lining; the blade is fixed into the through groove; the spiral body which is composed of a tooth bottom surface, a spiral surface and a tooth crest surface and has the same spiral lead as the screw body on the cutter body is arranged on the blade; the tooth bottom surface, the tooth crest surface, and the spiral surface which are on the blade are totally higher than the corresponding tooth bottom surface, the corresponding spiral surface, and the corresponding tooth crest surface on the cutter body, so that the cutter body spiral body can form continuous support to the blade. The blades with different shapes can be inserted into the cutter to make the gear processing cutters which are in different types and have the advantages of wide application ranges, favorable performance, long service life, high efficiency, high speed, high precision, and good precision retentivity and stability.

Description

Empiecement worm screw generating gear process tool

Technical field

The present invention relates to a kind of gear cutting tool, particularly a kind of empiecement worm screw generating gear process tool that gear is carried out gear hobbing, shaving processing use.

Background technology

Development along with scientific and technological cause, the popularization and application of a large amount of high-tech, high precision apparatus, as the most basic, most important part in modern electronic product and the equipment, especially as the gear of the main member in the transmission device, more and more higher to its requirement, promptly require non-environmental-pollution, noiselessness, precision height, long service life, require its direction to develop towards high accuracy, high efficiency, miniaturization.In order to process the gear of high accuracy, high efficiency, superior performance, gear cutting tool plays crucial effects.

The shaving processing cutter that now generally uses is a disc shaving cutter, when at the machining large-modulus gear, in the time of can't using disc shaving cutter, the gear shaver that uses worm screw shape is also arranged, but they all are to have several sulculuses forming cutting edge and chip space on the flank of tooth of whole cutter hub or helicoid, so the cutter volume is big and sulculus is difficult to processing, and only should adopt the high-speed tool steel making, because the cutter that high-speed tool steel is made only should be processed soft tooth flank gear, can not process hardened face gear simultaneously.Disc shaving cutter can't be processed the little shaft gear of end tooth line sealing, so the scope of application of disc shaving cutter and function of use be restricted, and certain limitation is arranged.

Existing hobcutter is to adopt by the tooth relief grinding to process, and employed relief grinding wheel is little, and cutting linear velocity is low, also must leave big withdrawing tooth socket space.Therefore relief grinding processing solid hob exists the cutter tooth effective length short, and it is few that circumference can be processed the teeth groove number, high material consumption, and the teeth precision is difficult to defectives such as raising.

The patent No. 88210676.7 " stacked worm gear shaver " is though also provide a kind of knockdown cutter tooth, structure of the cutter body, inserted tool bit in the dovetail groove of cutter hub, but it also need be screwed voussoir in groove method compresses cutter tooth, part is many, the assembling trouble, intensity is low, more can't make the cutter that the processing pinion is used.

Summary of the invention

Technical problem to be solved by this invention is, a kind of empiecement worm screw generating gear process tool is provided, can inlay difform blade, be made into dissimilar gear cutting tools, satisfy the requirement of the different operation processing of various gears, applied widely, superior performance, long service life, be efficiently, at a high speed, high-precision Gear Processing instrument.

The present invention addresses the above problem the technical scheme that is adopted: cutter is by cutter hub, blade, retainer plate is adhesively fixed whole formation, described cutter hub is Archimedes's basic worm shape, on have by the tooth bottom surface, helicoid, the conveyor screw that crest top land constitutes, along the worm screw generatrix direction groove is arranged, be fixed with blade in the groove, groove is divided into independently conveyor screw cutter lining with continuous worm spiral body, have on the blade by the tooth bottom surface, helicoid, crest top land constitute with cutter hub on the identical conveyor screw of conveyor screw lead of screw, and the tooth bottom surface on the blade, helicoid, crest top land all is higher than corresponding tooth bottom surface on the cutter hub, helicoid, crest top land forms the continuous supporting of cutter hub conveyor screw blade.

Compared with prior art, the invention has the advantages that: this empiecement worm screw generating gear process tool adopts the adhered structure of empiecement, volume is little, and consumptive material is few, makes simple, installation accuracy is easy to guarantee, blade repeatedly sharpening, change separately, reuse, the stock utilization height can be saved the cutter material of a large amount of costlinesses, be convenient to standardized production in batches again, improve machining accuracy.If adopt superhard, the ultra-fine cemented carbide blade Gear Processing later on chain digital control gear hobbing machine to heat treatment, can be used as realize at a high speed, efficiently to shave the fine finishining shaving tool of generation mill.And the cutter of this kind structure is owing to adopt the processing of circle mill method, withdrawing tooth socket space in the time of can not considering to leave teeth, thereby sword groove number can be multiplied under same outer diameter as, thereby the profile of tooth envelope precision of converted products is improved greatly, the monodentate cutting output of cutter tooth is little and load is light, cut more steady, good stability, the cutting speed and the amount of feeding have been improved, good processing accuracy, efficient height.This cutter has improved edge strength because the circular knife lining of cutting blade back has supporting role, can bear big cutting force, is difficult for tipping during high-speed cutting, long service life, and gear shaver can use on general hobbing machine, and the scope of application is wide, and versatility is good.

Description of drawings

Fig. 1, structural representation of the present invention (gear shaver).

Fig. 2, structural representation of the present invention (hobcutter).

Fig. 3, the left view of Fig. 1 (taking away a blade).

Fig. 4, the left view of Fig. 2 (taking away a blade).

Fig. 5, the enlarged drawing among Fig. 1.

Fig. 6, the enlarged drawing among Fig. 2.

The specific embodiment

Embodiment is further described the present invention below in conjunction with accompanying drawing.

Cutter hub 1, retainer plate 5 adopt the alloy tool steel manufacturing, and

blade

7,8 adopts carbide alloy or high performance high-speed steel manufacturing.

On circle sharpening body 1, grind continuous worm spiral body, conveyor screw is by tooth bottom surface 2, helicoid 3, crest top land 4 is formed, cut out the groove 6 that the cross section is a rectangle along worm screw generatrix direction five equilibrium again, the cross section of the

blade

7,8 at the place that matches with it also is rectangle, blade 7 no relief angles, blade 8 has relief angle, as shown in Figure 3, Figure 4.By groove 6 with continuous worm spiral body be divided into five equilibrium, conveyor screw cutter lining 9 independently, in groove 6, be bumped into and grind and use the

fixing blade

7,8 of engineering structural resin, after blade is fixing, grind the two ends of cylindrical and concordant blade, two retainer plates 5 are socketed on cutter hub 1 two ends and with engineering structural resin bonding and fix, grind retainer plate cylindrical and both ends of the surface then, and installation and detection reference when using as

cutter.Blade

7,8 fixing backs grind blade by the cutter parameters precision on worm grinder or screw grinder, make the lead of screw of

blade

7,8 identical with the lead of screw of cutter hub 1, and the conveyor screw that makes

blade

7,8 covers the conveyor screw on the cutter hub 1 fully, and on the

blade

7,8 the tooth bottom surface 10 of spiral, helicoid 11, crest top land 12 all to be higher than on the cutter hub 1 height that corresponding tooth bottom surface 2, helicoid 3, crest top land 4 exceed be 0.4～0.8 times of cutter module, to protrude cutting edge and to constitute chip space, and the continuous supporting between formation cutter hub blade, shown in Fig. 5,6.

Blade 7 no back angles are then used as worm screw shape gear shaver, and blade 8 allosome after the processing of circle mill method is installed and generated relief angle, just can be used as hobcutter and uses, as shown in Figure 1, 2.

Gear shaver is installed on the gear-hobbing machine and adds work gear and does rigid engagement processing during use.Hobcutter is installed in and carries out rolling cut processing on the gear-hobbing machine.

Claims

1, a kind of empiecement worm screw generating gear process tool, by cutter hub (1), blade, retainer plate (5) is adhesively fixed whole formation, it is characterized in that described cutter hub is Archimedes's basic worm shape, on have by tooth bottom surface (2), helicoid (3), the conveyor screw that crest top land (4) constitutes, along the worm screw generatrix direction groove (6) is arranged, groove is fixed with blade in (6), groove (6) is divided into independently conveyor screw cutter lining (9) with continuous worm spiral body, have on the blade by tooth bottom surface (10), helicoid (11), what crest top land (12) constituted goes up the identical conveyor screw of conveyor screw lead of screw with cutter hub (1), and the tooth bottom surface (10) on the blade, helicoid (11), crest top land (12) all is higher than cutter hub (1) and goes up corresponding tooth bottom surface (2), helicoid (3), crest top land (4) forms the continuous supporting of cutter hub conveyor screw blade.

2,, it is characterized in that blade (7) is the gear shaver of no back angle according to the described process tool of right claim 1.

3,, it is characterized in that blade (8) is for there being the hobcutter of back angle according to the described process tool of right claim 1.

4, according to the described process tool of right claim 1, it is characterized in that having the groove (6) of five equilibrium along the worm screw generatrix direction, groove (6) is divided into continuous worm spiral body the conveyor screw cutter lining (9) of independence, five equilibrium.

5, according to the described process tool of right claim 1, it is characterized in that the cross section of the groove (6) on the cutter hub (1) is a rectangle, the cross section of the blade (7,8) at the place that matches with it also is rectangle.

6,, it is characterized in that retainer plate (5) is enclosed within on the two ends of cutter hub (1), and be fixed into one with engineering structural resin bonding according to the described process tool of right claim 1.

7, process tool according to claim 1, it is characterized in that tooth bottom surface (10), helicoid (11), crest top land (12) on the blade (7,8) exceeding cutter hub (1), to go up the height of corresponding tooth bottom surface (2), helicoid (3), crest top land (4) be 0.4～0.8 times of cutter module.