CN201058388Y

CN201058388Y - Fixture clipper for making tooth-like part of gear

Info

Publication number: CN201058388Y
Application number: CNU200720124712XU
Authority: CN
Inventors: 李为忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-07-13
Filing date: 2007-07-13
Publication date: 2008-05-14
Anticipated expiration: 2017-07-13

Abstract

The utility model discloses a gear-making working fixture, wherein, a through hole is arranged on a support, the small end of an apex with a stepped shaft threads through the through hole of the support, a shaft shoulder of the apex is limited on the support and is locked by a nut, an annular drive plate is fixedly connected on the support, the point end of the apex goes through the circle center hole of the annular drive plate, a heart carrier is fixedly connected on the annular drive plate, the shaft neck of the big end of a mandrel passes through the hole of the heart carrier, and is centered relying on that the apex butts against the center hole on the end face of the mandrel, the mandrel is located in the circumferential direction by bolts radial-arranged on the heart carrier, the support is fixedly connected on a swivel table of a hobbing machine, the center hole on the end face of the shaft neck at the small end of the mandrel resists the apex of a small upright post, and the mandrel is disposed between the small upright post apex and the apex with the stepped shaft for tight propping. The utility model processes the machined workpiece by rather big feed quantity, and the mandrel nested with the workpiece can be demounted integrally for being remounted on a gear-shaving machine for shaving gears, then the precision, efficiency and quality of the starter gear can be improved, and the processing costs can also be reduced.

Description

The frock clamp of gear system tooth

Technical field

The utility model relates to a kind of frock clamp of Gear Processing, is specifically related to a kind of frock clamp that can be used for the gear system tooth of gear hobbing and shaving.

Background technology

At present, the motorcycle initiating gear need carry out clamping by the frock clamp that is installed on the gear-hobbing machine when the system tooth, the frock clamp of clamping starter receiver comprises mandrel 4, bearing 2, bearing is fixedly connected on the gear-hobbing machine rotary table 1, the workpiece 5 of need processing is enclosed within on the mandrel also by locking nut 6 lockings, mandrel one end passes the through hole that is provided with on the bearing and passes through nut 3 fixedlys connected with bearing, and the mandrel other end holds out against (as shown in Figure 1) by post top 7.Because the required precision of motorcycle initiating gear reaches eight grades, above-mentioned frock clamp generally all needs combined high precision gear-hobbing machine and hobboing cutter with slower feed, processes by the mode of rolling two cuttves, just can reach required precision.The processing mode of the said equipment, too high to cutter, equipment and cutter installation requirement, when not reaching this requirement, the frequent out-of-size of the profile of tooth after the processing, roughness does not reach requirement, and easily the flank of tooth is pulled; In the process, also need be equipped with frequent checks of profile of tooth instrument voluntarily, it is very loaded down with trivial details to operate; In addition, as the precision of hobboing cutter, require inspection machine more, the inspection machine of hobboing cutter generally is reluctant to dispose in order to save cost by producer, specifically by what reason is caused for the profile of tooth out-of-size, is difficult to investigate.In addition, workpiece such as need through the said equipment gear hobbing are reprocessed by the shaving that gear shaving machine improves precision, just have only the workpiece that is enclosed within on the mandrel is pulled down successively, then the single-piece clamping workpiece is carried out shaving on the frock clamp of gear shaving machine, adopt this mode can only the single-piece shaving on gear shaving machine, efficiency in shaving is lower, and the workpiece variation is easily overproof; And adopt and to disassemble from the gear-hobbing machine frock the mandrel that is with workpiece of existing gear-hobbing machine frock clamp is whole, be installed in shaving on the gear shaving machine, this mode is because mandrel location transformation of criterion, the workpiece variation is easily overproof, the mounting or dismounting of frock are proofreaied and correct very loaded down with trivial details, and equally machining accuracy are impacted.Therefore existing gear-hobbing machine frock clamp working (machining) efficiency in gear system tooth process quality low, product is also relatively poor, is unfavorable for improving the machining accuracy of gear.

Summary of the invention

The purpose of this utility model is, a kind of frock clamp of gear system tooth is provided, by it processed workpiece is processed with bigger feed, and the mandrel integral body that is with workpiece can be unloaded to reinstall to and carry out fine finishining on the gear shaving machine, precision, efficient and the quality of starter receiver processing are improved, and processing cost also is reduced.

The purpose of this utility model is achieved like this: a kind of frock clamp of gear system tooth, comprise bearing, mandrel, mandrel is a multidiameter, its small end be provided with threaded journal, bearing is provided with through hole, the top small end of a band multidiameter passes the through hole of bearing, the top shaft shoulder is limited in bearing, and lock by nut, a fixedly connected annular dial on the bearing, top center point passes the circle center hole of annular dial, fixedly connected heart folder on the annular dial, the axle journal of the big end of mandrel passes the hole of heart folder, by the top centre bore that withstands the mandrel end face fixed in, mandrel is circumferentially located by the screw that radially is provided with on the heart folder, bearing is fixedly connected on the gear-hobbing machine rotary table, the centre bore of mandrel small end axle journal end face and post is top offsets holds out against mandrel between at post top and band multidiameter top.

Adopted such scheme, mandrel is circumferentially located by the screw that radially is provided with on the heart folder, bearing is fixedly connected on the gear-hobbing machine rotary table, and the internal point of mandrel small end axle journal end face and post is top offsets holds out against mandrel between at post top and band multidiameter top.Use the advantage of above-mentioned frock clamp to be: at first need not be too high to the reconditioning requirement of hobboing cutter and hobboing cutter, and can pass through bigger feed, and workpiece is carried out roughing, can shorten process time, improve working (machining) efficiency; Secondly, the required precision to hobboing cutter during owing to roughing reduces, and need not dispose measuring equipment for hobboing cutter, to save manufacturing cost; Be to put a plurality of workpiece the mandrel last time to carry out gear hobbing simultaneously once more, make production efficiency improve.After gear hobbing is finished, the mandrel integral demounting that is with workpiece can be got off directly to be installed to and carry out shaving on the gear shaving machine, the location benchmark of mandrel and workpiece can be maintained in the unloading process, be installed in workpiece variation on the mandrel in allowed band, its machining accuracy can be affected, therefore, efficiency in shaving is not only high, and the shaving precision also is improved, and obtains meeting the starter receiver of required precision, and production cost is minimized simultaneously.

The utility model is described in further detail below in conjunction with accompanying drawing and the specific embodiment.

Description of drawings

Fig. 1 is the frock clamp structural representation of prior art;

Fig. 2 is a frock clamp structural representation of the present utility model;

Fig. 3 is the mandrel structural representation among Fig. 2;

Fig. 4 is the annular dial structural representation among Fig. 2;

Fig. 5 is the structure diagram of the heart folder among Fig. 2;

Fig. 6 is the assembly structure figure of annular dial and heart folder among Fig. 2.

In the accompanying drawing, 1 is the gear-hobbing machine rotary table, and 2 is bearing, and 3 is nut, 4 are the heart folder, and 4a is curved tail, and 4b is the hole, and 4c is a lock-screw, 5 is mandrel, and 5a is the shaft shoulder, and 5b is a step, 5c is a centre bore, and 6 is workpiece, and 7 is nut, 8 is annular dial, and 8a is a radial opening, and 8b is a via hole, 9 is that post is top, and 10 is top, and 11 is bolt.

The specific embodiment

Referring to Fig. 2 to Fig. 6, the frock clamp of gear system tooth of the present utility model comprises bearing 2, mandrel 5.Bearing one end and gear-hobbing machine rotary table 1 are fixedlyed connected by screw, and the bearing other end is provided with through hole.Top 10 small end of a band multidiameter passes the centre bore of bearing, and top 10 the shaft shoulder is limited in bearing, and by nut 3 lockings.A fixedly connected annular dial 8 on the bearing, the end face of annular dial 8 is provided with radial opening 8a and three via hole 8b, and the via hole that bolt 11 passes annular dial is threaded with bearing 2, and annular dial and bearing are tightened together.Top 10 center point passes the circle center hole of annular dial, the circle center hole of annular dial and top formation matched in clearance.Fixedly connected heart folder 4 on the annular dial, the heart anchor clamps have a curved tail 4a, and the curved tail 4a of heart folder embeds among this radial opening 8a by lock-screw 4c locking.Mandrel 5 is a multidiameter, and the big end of mandrel is provided with step 5b, and the axle journal of the big end of mandrel passes the hole 4b of heart folder, and in being decided by the top centre bore 5c that withstands the mandrel end face, mandrel is circumferentially located by the screw that radially is provided with on the heart folder.The small end of mandrel has the shaft part of a plurality of Gear Processing parts of suit successively; The mandrel small end is provided with threaded journal, is used for and nut 7 threaded engagement, and the workpiece 6 of need system tooth is fastened between nut and shaft shoulder 5a.The centre bore 5c and the post top 9 of mandrel small end axle journal end face offset, with mandrel hold out against at post top and the band multidiameter top 10 between.Post top 9 is fixed on the tailstock (not shown) of gear-hobbing machine, and the slide rail on tailstock and the gear-hobbing machine is slidingly matched, and when it slides into correct position, is locked on the slide rail by locking device.The centre bore of bearing 2, top, mandrel 5 and the top axle center of post all are positioned at same straight line.

When adopting the utility model to gear system tooth, in 0.01mm, the top accuracy correction of the post on the gear-hobbing machine is in 0.05mm with top 10 accuracy correction of band multidiameter on the anchor clamps.The mandrel last time can put 3 to 10 workpieces to be processed 6, workpiece 6 be fastened to mandrel the shaft shoulder and and the mandrel thread nut engaged between.The axle journal of the big end of mandrel passes the hole of heart folder, by top top withstand the centre bore 5c of mandrel end face fixed in, mandrel is circumferentially located by the screw that radially is provided with on the heart folder; Move the top tailstock of fastening post and make that post is top to offset with the little end-journal of mandrel, with mandrel hold out against at post top be with multidiameter top 10 between.Start gear-hobbing machine, the gear-hobbing machine rotary table is rotated, drive bearing and annular dial and heart folder and rotate, mandrel rotates with the heart folder.By the feed bigger to the gear-hobbing machine setting, each workpiece is slightly rolled, form the required gear teeth on each workpiece circumference, each workpiece circumference tooth surface has the shaving amount of 0.05mm to 0.12mm, the workpiece on the mandrel need be moved on the gear shaving machine with mandrel integral body it is further machined.

Heart folder is unclamped, and the top tailstock of fastening post resets, take off the mandrel (nut on the little end-journal of mandrel is not loose) that is with roughwrought workpiece.By top on the gear shaving machine mandrel two ends are held out against, mandrel is fixed on the gear shaving machine.Through gear shaving machine each workpiece is further processed simultaneously, 0.05mm to the 0.12mm shaving amount that the tooth surface on each workpiece circumference is had is shaved and is removed, and obtains meeting the starter receiver of required precision.

Claims

1. the frock clamp of a gear system tooth, comprise bearing, mandrel, mandrel is a multidiameter, its small end be provided with threaded journal, it is characterized in that: bearing is provided with through hole, the top small end of a band multidiameter passes the through hole of bearing, the top shaft shoulder is limited in bearing, and lock by nut, a fixedly connected annular dial on the bearing, top center point passes the circle center hole of annular dial, fixedly connected heart folder on the annular dial, the axle journal of the big end of mandrel passes the hole of heart folder, by the top centre bore that withstands the mandrel end face fixed in, mandrel is circumferentially located by the screw that radially is provided with on the heart folder, bearing is fixedly connected on the gear-hobbing machine rotary table, the centre bore of mandrel small end axle journal end face and post is top offsets holds out against mandrel between at post top and band multidiameter top.

2. the frock clamp of gear system tooth according to claim 1 is characterized in that: described annular dial is provided with a radial opening, and the curved tail of heart folder embeds in this radial opening fastening by screw.

3. the frock clamp of gear system tooth according to claim 1 is characterized in that: the small end of described mandrel has the shaft part of a plurality of Gear Processing parts of suit successively.

4. the frock clamp of gear system tooth according to claim 1 is characterized in that: the top axle center of the locating hole of described bearing, stationary center, mandrel and post all is positioned at same straight line.

4. the frock clamp of gear system tooth according to claim 1 is characterized in that: the circle center hole of described annular dial cooperates with top big splaying.

5. the frock clamp of gear system tooth according to claim 1 is characterized in that: the big end of described mandrel is provided with step.