CN2133066Y - Lower cutting machine for electric machine commutator - Google Patents

Abstract

The utility model relates to a special-purpose machinery device used for the processing of an electric machine commutator, which comprises a transmission and scraping device and a lifting device. The utility model is characterized in that an automatic indexing device and a division micro-regulating device which are matched with the transmission and scraping device and the lifting device are arranged. The automatic indexing device is composed of an indexing driving device, a selective gear system, an index wormwheel and an indexing worm screw. The utility model is suitable for the processing of various commutators. Compared with manual scraping, the efficiency is improved more than 60 times. In addition, working environment is improved and processing precision is improved.

Description

Lower cutting machine for electric machine commutator

The utility model relates to a kind of special mechanical equipment of processing engine commutator.

Engine commutator is to be formed by the alternate closed assembly with mica sheet of copper sheet, no matter is that new machine assembling or maintenance add man-hour, the radial height of mica sheet in the commutator and copper sheet is had strict specification requirement, and the top of copper sheet needs chamfered.Because there is error in the thickness of copper sheet and mica sheet, both positions add man-hour relative machine shaft in assembling and also have axially, radially reach multiple errors such as drift angle, thereby bring certain difficulty to machining, still generally adopt the processing method of artificial scraping up to now, not only time-consumingly take a lot of work, labour intensity is big, poor working environment, and, efficient is extremely low generally to need 3～4 day time to finish one, and crudy is also unstable.

The purpose of this utility model is to substitute artificial scraping with machining, and a kind of special equipment that is used to process engine commutator is provided.

Design of the present utility model is the specification requirement according to the assembling processing commutator, has automatic scraping and automatic indexing function and can carry out multi-facetedly with a kind of, and the plant equipment that multi-parameter is adjusted is with the machining of realization to commutator.This programme is made up of transmission device for scraping, lowering or hoisting gear, automatic dividing attachment and calibration micromatic setting.Wherein, the transmission device for scraping mainly is made up of motor, speed changer, main transmission worm and gear and crank and rocker mechanism, slide cartridge and lifter.Described speed changer is used for regulating the transmission speed of main transmission worm and gear and drives crank and rocker mechanism work, the crank rocking handle mechanism drives slide cartridge again and makes horizontal reciprocating movement, and then make lifter do corresponding reciprocating motion and drive cutter head and do cutter lifting, down cutter work, to satisfy the needs of reciprocal scraping.Described lowering or hoisting gear mainly is made up of bevel gear, leading screw and handwheel, and its effect is that control crank and rocker mechanism, slide cartridge and lifter move up and down together, to satisfy the needs of the big or small commutator of processing difference.The automatic dividing attachment of this programme is mainly by indexing and driving mechanism, change-wheel system, dividing worm wheel and indexing worm are formed, its effect is to make a round trip when above-mentioned crank and rocker mechanism, lifter makes commutator turn over a corresponding angle on request after finishing a scraping, to continue scraping next time, described indexing and driving mechanism is by bevel gear, dial and sheave are formed, this bevel gear and main transmission worm gear are connected as a single entity, can drive dial by this bevel gear when the work of main transmission worm and gear and when making the crank and rocker mechanism reciprocating motion rotates and sheave is turned an angle, be the revolution that this angle is changed into indexing worm by change-wheel again, and then make commutator turn over corresponding angle by dividing worm wheel.Above-mentioned change-wheel system can be the commutator of different sheet numbers according to different armatures, carries out the suitable collocation of gear, to satisfy different processing needs; Above-mentioned indexing worm and dividing worm wheel mesh in no sideshake mode, thereby guarantee that commutator can accurately locate, to improve crudy.The calibration micromatic setting of this programme mainly is made up of trimming hand wheel, fine setting screw rod and conduit, its effect is by key joint handwheel and screw rod makes the indexing worm that is connected with conduit do certain axial displacement and make dividing worm wheel rotate a minute angle, and then make commutator do small revolution, to reach the small correction of cutter head to mica sheet.Feature of the present utility model be have with above-mentioned transmission device for scraping and lowering or hoisting gear be equipped with by indexing and driving mechanism, change-wheel system, the automatic dividing attachment that dividing worm wheel and indexing worm constitute, and the calibration that is connected with the indexing worm of this indexing means is transferred device slightly.

The utility model can be processed all kinds of engine commutators of different length, width and different sheet numbers, improved production efficiency greatly, make the required time of relatively large commutator of processing from manually shortening to 28 minutes in 3～4 days of scraping, its efficient has improved more than 60 times, simultaneously also improved operational environment, opened up field of machining engine commutator.This programme is reasonable in design, compact conformation, precision are higher, has bigger practical value and promotion prospect.

Below, will be in conjunction with the accompanying drawings and embodiments, the utility model is further described.

Fig. 1～Fig. 3 is complete machine and lifter schematic diagram

Fig. 4 is a calibration micromatic setting schematic diagram

With reference to Fig. 1～Fig. 3: the transmission device for scraping of this programme mainly is made of motor, speed changer 1, main transmission worm and gear 2, crank and rocker mechanism 3, slide cartridge 4, lifter 5.The speed changer of this example is a three-range transmission, its speed ratio is respectively 1.5 * 1 0.5 third gear, and the gearratio of main transmission worm and gear is 60:1, and worm-wheel shaft is a splined shaft, worm gear moves up and down relatively, to cooperate lowering or hoisting gear crank and rocker mechanism, slide cartridge and lifter is adjusted up and down; Convenient for tool setting, this worm shaft can rotate by hand by clutch.It is reciprocating by positioning sleeve a and slide cartridge Lian Jie And drive for crank and rocker mechanism, and reciprocating scope can be regulated by moving forward and backward of positioning sleeve.Its distance is regulated the crank throw radius by the leading screw b on the crank and rocker mechanism and is realized, thereby can satisfy the needs of different commutator length of processing and position.Lifter is located in the slide cartridge (sees Fig. 2～Fig. 3), form by knife bar 13, axle 14, V-block 15 and slip ring 16, when slide cartridge is made horizontal reciprocating movement, V-block on the slide cartridge is at the effect lower swing (slip ring remains static behind body block effect bottom offset one small distance) of slip ring, the drive axle moves forward and backward, pin m on the axle is slided along the skewed slot on the knife bar, do clockwise or rotate counterclockwise around steady pin n, finish the following cutter or the cutter lifting motion of cutter head to impel knife bar.The lowering or hoisting gear 12 of this programme is made up of two pairs of bevel gears, handwheel and leading screws, when rotating handwheel and making the leading screw rotation by two pairs of bevel gear transmissions, so nut on the leading screw and coupled crank and rocker mechanism 3, slide cartridge 4 and lifter 5 move up and down together, to satisfy the needs of the different big or small commutators of processing.

The automatic dividing attachment of this programme is by indexing and driving mechanism 6, and change-wheel is 7, and dividing worm wheel 8 and indexing worm 9 are formed.Wherein indexing and driving mechanism is made of a pair of bevel gear J, dial e and sheave d, and this bevel gear is connected as a single entity with the main transmission worm gear and is connected the engagement of dial and sheave with dial by connecting axle.When the work of main transmission worm and gear and when making crank and rocker mechanism make level back and forth to move, can make dial rotate a week by bevel gear, and then stir sheave and turn an angle.Change-wheel system is made up of a pair of gear e, f and intermediate drive gear g, h, i.Gear collocation by the different numbers of teeth is converted into certain revolution of indexing worm with the angle of rotation of sheave, makes commutator rotate corresponding angle by the dividing worm wheel that is located on the main shaft again.The sheave angle of rotation of present embodiment is that 60 °, the revolution of indexing worm are 1/3 to change, and commutator rotates a slice at every turn.Sideshake when meshing in order to eliminate dividing worm wheel and indexing worm, this routine dividing worm wheel are that a double-disk worm gear (seeing accompanying drawing 4) utilizes the compression spring that two on worm gear is staggered, and are close to worm screw flank profil both sides respectively until its flank profil both sides.

With reference to Fig. 4: the calibration micromatic setting of this programme is made of fine setting screw rod 18, trimming hand wheel 19 and conduit 20, wherein, conduit is connected by the bearing that is located at the worm shaft two ends with indexing worm 9, when rotating handwheel and make the screw rod rotation, conduit will be made micro-displacement and can drive indexing worm 9 to move together vertically, and then make dividing worm wheel 8 turn over a minute angle, and make commutator do small revolution, reach the small correction of cutter head to mica sheet.Above-mentioned automatic indexing and calibration fine setting all realize the rotation calibration of commutator by indexing worm.The former is the rotation of worm screw, and the latter is that worm screw does that small axial displacement realizes, these two kinds of motions are all independent each other, do not disturb mutually.

The course of work of this programme is as follows: elder generation is located the two ends centre bore of armature to be processed respectively and is fastening with main shaft by the thimble of main shaft 10 and tailstock 11, (commutator is by main shaft one side), adjusting lowering or hoisting gear makes cutter head be elevated to the appropriate location, shake the handle of three-range transmission then, can satisfy the position and the length of commutator with observation cutter head front-rear reciprocation movement, otherwise can adjust by positioning sleeve a on the slide cartridge and the leading screw b in the crank and rocker mechanism, rotate the handwheel of calibration micromatic setting at last, make cutter head aligning megohmit(e) can open motor and carry out work.Before armature is installed, should carry out suitable gear collocation to change-wheel system according to the sheet number of institute's processing armature commutator, to guarantee that cutter head whenever makes a round trip, this commutator turns over a slice.To the depth degree of mica sheet cutting, can see Fig. 3 in the course of the work by the fine adjustment screw 17(on cutter head top) adjust.

Claims (2)

1, a kind of engine commutator undercutter, comprise the transmission device for scraping and the lowering or hoisting gear (12) that constitute by motor, speed changer (1), main transmission worm and gear (2), crank and rocker mechanism (3), slide cartridge (4), lifter (5), it is characterized in that having automatic dividing attachment that constitutes by indexing and driving mechanism (6), change-wheel system (7), dividing worm wheel (8), indexing worm (9) that is equipped with above-mentioned transmission device for scraping and lowering or hoisting gear and the calibration micromatic setting that is connected with the indexing worm (9) of this automatic dividing attachment.

2, a kind of engine commutator undercutter as claimed in claim 1 is characterized in that described calibration micromatic setting is to be made of trimming hand wheel (19), fine setting screw rod (18) and conduit (20).

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