CN201483092U

CN201483092U - Gear Hole Self-Centering Ball Clamp

Info

Publication number: CN201483092U
Application number: CN2009202164778U
Authority: CN
Inventors: 曾光荣·巴拿巴
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-09-17
Filing date: 2009-09-17
Publication date: 2010-05-26
Anticipated expiration: 2019-09-17

Abstract

The utility model provides a gear hole is from centering ball anchor clamps, including anchor clamps mandrel, gland, belleville spring, centering taper sleeve, ball circle, ball, chassis. The fixture mandrel is sleeved with a ball ring and a centering taper sleeve, balls are placed in ball limiting holes in the ball ring, and the centering taper sleeve abuts against the balls. A gear blank is sleeved outside the ball ring, and the balls are propped against gear holes of the gear blank; the upper end of the centering taper sleeve is pressed with a disk spring. The utility model has the advantages that: the fixture has large reducing amount, can be accurately centered, can be used for machining the teeth of a plurality of gears simultaneously, and a fixture mandrel does not need to be changed frequently. The clamp has the advantages of simple structure, time and labor saving and low manufacturing cost.

Description

Gear hole self-centering rolling ball clamp

Technical field

The utility model relates to a kind of anchor clamps of gear external tooth processing, the wheel blank turning that can be used for gear hobbing, gear shaping, shaving, gear honing, bevel gear cutting and keep cylindrical and endoporus concentricity; If the accuracy tolerance manufacturing with measurer also is suitable for roll flute.

Background technology

In the Gear Processing process, produce high class gear, just must control each error project of processing technology.Mainly be to do the location benchmark during Gear Processing, guarantee that therefore precision centering is to improve the machining accuracy most important method with centre bore and end face.

At present in the prior art, there are various gear hole centralizers, widely used is the anchor clamps that axle is joined centering sleeve, or the micro taper axle joins the self-centering fixture of resilient sleeve, as the German patent DE 4,032 of ZIMMERMANN, 881 (A1) (1992), the international monopoly WO83/03 of U.S. HUNKELER, the anchor clamps that 562 (nineteen eighty-threes) were put down in writing, centering precision is in 0.005 millimeter (roll flute), 0.020 millimeter (accurate gear hobbing) and 0.050 millimeter (staying the roll flute wheel blank) scope.The employing gear centering surface that also has is exactly to turn round the axle center, U.S. Pat 6 as people such as the German Liebherr-Verzahntechnik GmbH ROLF of company, 461,089B2 (2002), people's such as the U.S. The Gleason Works WILLIAMD of company patent 5,797,605 (1998), people's such as NEIL United States Patent (USP) 5,251,510 (1993) is put down in writing, its centering precision is still in 0.005-0.020 millimeter scope, but workpiece loading and unloading and replacing centring element trouble, the anchor clamps manufacturing cost is high, and special implement is more wanted in conical bore centering.

There is total defective in the anchor clamps of above prior art:

1. the reducing amount generally has only half millimeter scope;

2. professional component is wanted in conical bore centering;

3. generally be difficult for many gear hobbings;

4. anchor clamps manufacturing cost height;

5. during jobbing work, must change anchor clamps time-consuming often, arduously.

Summary of the invention

The purpose of this utility model provides a kind of gear anchor clamps that can process single-piece or many wheel blanks, this anchor clamps adapt to aperture wide variation, and can be fast and precision centering, the powerful gear that clamps, and these anchor clamps are felt relieved gear naturally, centring element can be controlled at very high degree of precision, and the reducing amount is big.

For achieving the above object, the utility model is realized by the following technical solutions: it comprises anchor clamps axle, gland, disk spring, centering tapered sleeve, ball circle, chassis; Be set with ball circle and centering tapered sleeve on the described anchor clamps axle, the ball circle is provided with the ball spacing hole, lays ball in the ball spacing hole, and the centering tapered sleeve is positioned at the ball circle, withstands on the ball, and ball is fixed by the centering tapered sleeve of ball circle and upper end; Be set with wheel blank outside the ball circle, ball withstands on the endoporus of wheel blank; At the ball circle is a chassis bottom; Be pressed with disk spring in the centering cone set upper side; The disk spring upper end is pressed with a gland, and the gland upper end is provided with the nut that screws that is screwed on the anchor clamps axle.

Between described ball circle and chassis, a packing ring is arranged.

A back-up ring is stamped in described ball circle upper end.

One top briquetting is arranged between described disk spring and the gland.

The top of described anchor clamps axle be one with the turret head of anchor clamps axle one, on described turret head, fix a pin.

Be equipped with a bolt straight up on the described gland.

The utility model has the advantages that:

1, these anchor clamps reducing amount is big, have centring elements such as very big ball of easy replacing reducing amount and tapered sleeve, change on a large scale, centering fast and accurately, the powerful clamping and adapt to the aperture easily, as long as the faces parallel height just can be done the tooth portion processing of many gears simultaneously; Count pair with anchor clamps, promptly be suitable for the self-centering in 150 millimeters internal gear apertures of normal use, thereby save thousands of centering sleeve, or tens secondary resilient sleeve centralizers.

2, these anchor clamps can guarantee the centering precision of accurate gear hobbing; If the accuracy tolerance manufacturing with measurer then can become the roll flute anchor clamps.

3, as long as faces parallel height (corase grind in case of necessity) just can be done many overlapping gear hobbings of wheel blank, the gear hobbing time that can save helical gear exponentially.

4, the anchor clamps axle needn't often be changed, and it is convenient to change ball, saves time, laborsaving.

5, clamp structure is simple, mostly is the standard component manufacturing, and is with low cost.

6, these anchor clamps make the roll flute surplus more abundant because of the centering precision height, thereby have reduced the emergency risk of roll flute quality.

Description of drawings

The structural representation of clamped condition not when Fig. 1 is self-centering ball clamp processing single-piece gear.

The structural representation of clamped condition when Fig. 2 is self-centering ball clamp processing single-piece gear.

Fig. 3 is the cutaway view of ball circle.

Fig. 4 is the vertical view of ball circle.

Fig. 5 is that A among Fig. 3 is to view.

Fig. 6 is that B among Fig. 3 is to view.

Fig. 7 is the vertical view of back-up ring.

Fig. 8 is the cutaway view of packing ring.

Fig. 9 is the upward view of packing ring.

Figure 10 is the structural representation composite diagram (the center line left side is clamped condition not, and the right side is a clamped condition) of two gears of self-centering ball clamp processing.

The accompanying drawing mark

1. anchor clamps axle 6. wheel blanks 10. back-up rings

1a. turret head 7. ball circles 11. packing rings

2. gland 7a. ball spacing hole 12. chassis

3. disk spring 7b. circlip groove 13. pins

4. centering tapered sleeve 8. briquettings 14. bolts

5. ball 9. screws nut 15. top briquettings

The specific embodiment

Referring to accompanying drawing, what Fig. 1 represented is the state that does not clamp before the processing of single-piece wheel blank.The utility model comprises anchor clamps axle 1, gland 2, disk spring 3, centering tapered sleeve 4, ball 5, chassis 12.Be set with ball circle 7 and centering tapered sleeve 4 on the described anchor clamps axle 1, be provided with ball spacing hole 7a on ball circle 7, ball spacing hole 7a is an outer little interior big bellmouth.In ball spacing hole 7a, lay three or more accurate ball 5, the diameter of ball 5 is less than the race diameter of ball spacing hole 7a, inner ring diameter greater than ball spacing hole 7a, therefore ball 5 is limited in the ball circle 7, ball 5 is rolled in the middle of anchor clamps loosen Shi Nengxiang, and fall outside not understanding.Centering tapered sleeve 4 is positioned at ball circle 7, withstands on the ball 5, and ball 5 is fixing by the centering tapered sleeve 4 and the ball circle 7 of upper end, and the preferred cone angle of centering tapered sleeve is 70 degree; Ball circle 7 be a chassis 12 bottom, chassis 12 is the accurate chassis of a kind of high rigidity.Be set with wheel blank 6 outside ball circle 7, the endoporus of wheel blank 6 and the ball that has been positioned 5 withstand on together; Be pressed with disk spring 3 in centering tapered sleeve 4 upper ends; Disk spring 3 upper ends are pressed with a gland 2, and a top briquetting 15 of using as pad is arranged between described disk spring 3 and the gland 2, and gland 2 upper ends are provided with and screw nut 9, screw in the thread segment that nut 9 is screwed in anchor clamps axle 1 top; The top of anchor clamps axle 1 be one with the turret head 1a of anchor clamps axle 1 one, on described turret head 1a, fix a pin 13., be equipped with a bolt 14 straight up on the described gland 2.Before screwing nut 9 and screwing, there is the gap between gland 2 and wheel blank 6 end faces, disk spring 3 is in than relaxed state.

The structural representation that Fig. 2 represents when being processing single-piece wheel blank clamped condition.Before processing wheel blank 6, because action of hydraulic force or when screwing nut 9 usefulness spanners and screwing, gland 2 compresses disk spring 3 by top briquetting 15, make with the concentric centering tapered sleeve 4 of machine tool rotary axle by briquetting 8 and to press to accurate ball 5, ball 5 promotes gear hole equably, makes wheel blank 6 precision centering naturally; When screwing nut 9 and continue to compress, the felt relieved pressure of tapered sleeve 4 of ball 5, outwards motion holds out against the gear hole of wheel blank 6, thereby wheel blank 6 is fixed on the anchor clamps axle 1 under the force action of centering tapered sleeve 4 and ball circle 7, and wheel blank 6 is clamped by powerful.Because when screwing nut 9 and being tightened by spanner, gland 2 can rotate thereupon, bolt 14 is fixed on the pin 13 of anchor clamps axle 1 upper end along with gland 2 forwards to, then stoped the rotation of gland 2, screw nut 9 thereby can continue to tighten, wheel blank 6 obtains precision centering, and is clamped by powerful.

Fig. 3 to Fig. 6 is the structural representation of ball circle 7.Referring to Fig. 3 to Fig. 6, ball spacing hole 7a and circlip groove 7b are arranged on ball circle 7.In Fig. 3 and embodiment shown in Figure 4, the number of ball spacing hole 7a is for being three, but according to processing wheel blank 6 sizes, do not limit its number.Three circlip groove 7b are arranged on the ball circle 7, and circlip groove 7b is L shaped groove, and it and back-up ring 10 shown in Figure 7 are complementary.Referring to Fig. 7, three lobe back-up ring wings are arranged on the back-up ring 10, can be inserted among the circlip groove 7b.When back-up ring 10 when a direction is rotated, the back-up ring wing is clamped among the circlip groove 7b, tightly on ball circle 7, balls 5 in the ball circle 7 and centering tapered sleeves 4 just lock together back-up ring 10 lid.After machining, back-up ring 10 rotates round about, can take off from ball circle 7.With this structure, centering tapered sleeve 4 is just easily joined ball 5 and the corresponding ball circle 7 that changes different size, adapts to the needs in the various apertures of gear easily.

Fig. 8 and Fig. 9 are the structural representations of packing ring 11, packing ring 11 is a high rigidity packing ring, is clipped between ball circle 7 and the chassis 12, and notch is arranged at packing ring 11 bottoms, packing ring 11 is cut oil and is bonded on the chassis 12, from notch packing ring 11 is levered up the back easily with screwdriver and is taken out by chassis 12.

The utility model can be processed single-piece wheel blank 6, also can process many wheel blanks 6 as required simultaneously, and the number of processing wheel blank 6 simultaneously can be a 2-8 spare.Figure 10 shows that the schematic diagram of two wheel blanks 6 of processing.Processing is more than two when a plurality of, its structure and structural similarity shown in Figure 10, and wheel blank 6 is enclosed within on the anchor clamps axle 1 and is superimposed.Each part wheel blank 6 is corresponding one by one with a ball circle 7 and a centering tapered sleeve 4.When many wheel blanks 6 of processing, also accompany packing ring 11 between the top ball circle 7 and the briquetting 8 of bottom.To the wheel blank 6 of overlapping self-centering gear hobbing more than two, especially for helical tooth wheel blank 6, can reduce cutting man-hour exponentially, improved working (machining) efficiency, saved the man power and material.

Claims

1. A gear hole self-centering ball fixture, characterized in that: it includes a fixture mandrel, a gland, a disc spring, a centering taper sleeve, a ball ring, and a chassis; the ball ring and the centering taper sleeve are set on the fixture mandrel On the top, the ball ring is provided with a ball limit hole, and the ball is placed in the ball limit hole. The centering taper sleeve is located in the ball ring, and it is supported on the ball. The ring is placed on the chassis; the gear blank is set outside the ball ring, and the ball is pressed against the gear hole of the gear blank; a disc spring is pressed on the upper end of the centering taper sleeve; a gland is pressed on the upper end of the disc spring, and the upper end of the gland A tightening nut is provided, and the tightening nut is screwed on the clamp mandrel.

2. The gear hole self-centering ball clamp according to claim 1, characterized in that: the taper angle of the centering taper sleeve is 70 degrees.

3. The gear hole self-centering ball clamp according to claim 1, characterized in that: the ball limiting hole on the ball ring is an inverted cone.

4. The gear hole self-centering ball clamp according to claim 1, characterized in that: the upper end cover of the ball ring has a retaining ring.

5. The gear hole self-centering ball clamp according to claim 1, characterized in that there is a top pressure block between the disc spring and the gland.

6 . The gear hole self-centering ball clamp according to claim 1 , characterized in that: a hexagonal head integrated with the clamping mandrel is on the top of the clamping mandrel, and a stop rod is fixed on the hexagonal head. 7 .

7. The gear hole self-centering ball clamp according to claim 1, characterized in that: a vertically upward bolt is installed on the gland.

8. The gear hole self-centering ball fixture according to any one of claims 1-7, characterized in that: the number of gear blanks is 1-8 pieces, and when there are more than two gear blanks, the gear blanks are sleeved on the clamp mandrel Superimposed together, each piece of gear blank corresponds to a ball ring and a centering tapered sleeve one by one.