CN102909620A

CN102909620A - Universal type pitch circle positioning gear mill inner hole device

Info

Publication number: CN102909620A
Application number: CN2012104070945A
Authority: CN
Inventors: 陈烜; 李建波; 王蕴石; 郑江
Original assignee: CHANGSHU TIANDI COAL MACHINE EQUIPMENT CO LTD
Current assignee: CHANGSHU TIANDI COAL MACHINE EQUIPMENT CO LTD
Priority date: 2012-10-24
Filing date: 2012-10-24
Publication date: 2013-02-06

Abstract

The invention discloses a universal type pitch circle positioning gear mill inner hole device. The universal type pitch circle positioning gear mill inner hole device comprises a pitch circle clamp body, a roller locating ring and a roller, wherein the inner wall of the pitch circle clamp body and the bottom surface form a cavity for accommodating a gear; the inner wall comprises a plurality of curved surfaces; the path line of the curved surfaces is a curved line of which the curvature radius is decreased by degrees; the roller locating ring is arranged at the bottom of the pitch circle clamp body, and can rotate in a certain range at the bottom of the clamp body; the roller comprises a column core and an outer ring which is sleeved outside the column core; the inner diameter of the outer ring is greater than the diameter of the column core; and the column core is fixed on the roller locating ring. According to the universal type pitch circle positioning gear mill inner hole device, the roller is meshed with a gear pitch circle, the curved surfaces of the inner wall of the pitch circle clamp body are used for positioning in a matching mode, and the gear is rotated clockwise to finish positioning and clamping, and is rotated counterclockwise to finish dismounting, so that the clamping efficiency is very high; and the clamping direction of the gear is in accordance with the grinding direction of a grinding machine to ensure that the gear can not become loosened during grinding, so that the stability of the product quality is ensured.

Description

A kind of universal pitch circle positioning tooth disc sharpener endoporus device

Technical field

The present invention relates to a kind of gear grinding internal clamp, particularly relate to a kind of universal pitch circle positioning tooth disc sharpener endoporus device.

Background technology

The associated gear of coal-winning machine is of a great variety, and dimension precision requirement is high.Simultaneously, the manufacturing procedure of gear is longer, and the machining accuracy of a upper procedure often produces larger impact to the machining accuracy of back operation.Extreme trace operation such as gear is roll flute, in the roll flute process, and usually can be with gear face and Internal hole positioning.Bore requires the concentricity tolerance of mill endoporus backgear endoporus to be no more than 0.014mm as the positioning datum of roll flute operation.

At present, usually rely on pressing plate or chuck by hand gear to be carried out clamping in this procedure, there are following 2 problems in this installation way: (1) quality control difficulty: owing to lack necessary special-purpose positioning fixture, in the clamping process, need repeatedly proofread and correct reference circle and end face, the positioning accuracy of part is subjected to operator's subjectivity to affect deficient in stability; (2) clamping inefficiency: because frock clamp is too simple, more gear changing all need be proofreaied and correct end face run-out precision and the reference circle precision of beating again at every turn, the clamping inefficiency, take company's model gear as example, the chuck clamping time is about 45 minutes, every gear clamping time is about 20 minutes, when accounting for the single-piece chief engineer more than 1/3.In mill endoporus and end face operation, also adopt pitch-line chuck that gear is clamped, but after bucket formula pitch circle is clipped in and clamps, anchor clamps can form gear face and block and can't carry out simultaneously the processing of endoporus and end face, and common pitch-line chuck adopts steel ball to contact with gear teeth face usually in addition, but the centering effect of Multi-contact is relatively poor, precision is low, the point way of contact so that steel ball to bear pressure wearing and tearing larger, cause easily wear out failure, affected processing precision of products.

Summary of the invention

The object of the present invention is to provide a kind of universal pitch circle positioning tooth disc sharpener endoporus device, the submission gear clamps precision and clamps efficient, to the Workpiece clamping time, reduces manpower in the minimizing machining period, enhances productivity.

For solving the problems of the technologies described above, technical scheme of the present invention is such, a kind of universal pitch circle positioning tooth disc sharpener endoporus device, it is characterized in that: comprise the pitch-line chuck body, roller centring ring and roller, described pitch-line chuck body inwall and bottom surface form the cavity that holds gear, described inwall comprises several curved surfaces, the trajectory of described curved surface is the curve that radius of curvature is successively decreased, described roller centring ring is arranged on pitch-line chuck body bottom, described roller comprises post core and the outer ring that is nested with outside the post core, described outer ring internal diameter is greater than the post core diameter, and described post core is fixed on the roller centring ring.

Described inwall comprises five curved surfaces, and the trajectory of described curved surface is Archimedes spiral.

Described Archimedes spiral is constant speed lift 0.4mm in 40 ° of scopes.

Described pitch-line chuck body bottom is provided with locating slot, and described roller centring ring is arranged in the locating slot.

Described pitch-line chuck body inwall is provided with stop screw, and described roller centring ring outer rim is provided with spacing preiection, stop screw and the rotational angle of spacing preiection engagement limits roller centring ring in the pitch-line chuck body.

The advantage of technical scheme provided by the present invention is:

1. this device cooperates the location by roller and pitch circle engagement with pitch-line chuck body inwall curved surface, and the gear that turns clockwise is finished the location, clamped, and is rotated counterclockwise and can finishes dismounting, and clamping efficient is high;

2. the clamping direction of gear is consistent with the grinding machine direction, can guarantee that gear does not become flexible in grinding process, thereby has guaranteed the stability of product quality;

3. mainly by the accuracy guarantee of anchor clamps self, the stability of clamping precision and gear grinding inner hole precision all improve greatly for the flatness runout error in the gear clamping process and reference circle runout error;

4. by changing roller centring ring or the roller of different size, can accomplish the versatility of certain limit.

Description of drawings

Fig. 1 is structural representation of the present invention;

Fig. 2 is pitch-line chuck body structure schematic diagram;

Fig. 3 is the A-A cutaway view of Fig. 2;

Fig. 4 is roller locating ring structure schematic diagram;

Fig. 5 is that the present invention clamps the gear structure schematic diagram.

The specific embodiment

The invention will be further described below in conjunction with embodiment, but not as a limitation of the invention.

See also Fig. 1 to Fig. 4, universal pitch circle positioning tooth disc sharpener endoporus device, comprise pitch-line chuck body 1, roller centring ring 2 and roller 3, pitch-line chuck body 1 inwall 10 forms the cavity 12 that holds gear 4 with bottom surface 11, inwall 10 comprises five curved surface 10a, the trajectory of curved surface 10a is Archimedes spiral, and pitch-line chuck body inwall 10 is provided with stop screw 14.Pitch-line chuck body 1 bottom is provided with locating slot 3, roller centring ring 2 outer rims are provided with spacing preiection 20, roller centring ring 2 be locating slot 13 interior can freely rotations, stop screw 14 and the rotational angle of spacing preiection 20 engagement limits roller centring rings 2 in pitch-line chuck body 1.Roller 3 comprises post core 31 and the outer ring 32 that is nested with outside post core 31, and outer ring 32 internal diameters are greater than post core 31 diameters, and post core 31 is fixed on the

roller centring ring

2, and 32 of outer rings can freely be rotated.

When clamping gear workpieces, this device is fixed on the workbench of grinding machine by attachment screw 5, rotary work-table with the amesdial means for correcting, guarantees that end face is chosen and decides tolerance in 0.02mm that the cylindrical run-out tolerance is in 0.05mm.See also Fig. 5, after the end face of gear 4 and teeth groove cleaned out, put into this device, by flat pitch-line chuck body cavity body 12 bottom surfaces, roller 3 snaps in teeth groove, the gear 4 that turns clockwise, gear 4 drives rollers 3, and the Archimedes' helicoid 10a by constant speed lift 0.4mm in five sections 40 ° of scopes finishes automatic location, clamping; Clamping direction is consistent with the grinding direction, guarantees that gear does not become flexible in grinding process; To the drawing given size, be rotated counterclockwise the dismounting that gear can be finished gear until inner hole grinding.

Claims

1. universal pitch circle positioning tooth disc sharpener endoporus device, it is characterized in that: comprise pitch-line chuck body (1), roller centring ring (2) and roller (3), described pitch-line chuck body inwall (10) forms the cavity (12) that holds gear with bottom surface (11), described inwall (10) comprises several curved surfaces (10a), the trajectory of described curved surface (10a) is the curve that radius of curvature is successively decreased, described roller centring ring (2) is arranged on pitch-line chuck body (1) bottom, described roller (3) comprises post core (31) and is nested with outer ring (32) outside post core (31), described outer ring (32) internal diameter is greater than post core (31) diameter, and described post core (31) is fixed on the roller centring ring (2).

2. universal pitch circle positioning tooth disc sharpener endoporus device according to claim 1, it is characterized in that: described inwall (10) comprises five curved surfaces (10a), the trajectory of described curved surface (10a) is Archimedes spiral.

3. universal pitch circle positioning tooth disc sharpener endoporus device according to claim 2, it is characterized in that: described Archimedes spiral is constant speed lift 0.4mm in 40 ° of scopes.

4. the described universal pitch circle positioning tooth disc sharpener endoporus device of any one according to claim 1-3, it is characterized in that: described pitch-line chuck body (1) bottom is provided with locating slot (13), and described roller centring ring (2) is arranged in the locating slot (13).

5. the described universal pitch circle positioning tooth disc sharpener endoporus device of any one according to claim 1-3, it is characterized in that: described pitch-line chuck body inwall (10) is provided with stop screw (14), described roller centring ring (2) outer rim is provided with spacing preiection (20), stop screw (14) and the rotational angle of spacing preiection (20) engagement limits roller centring ring (2) in pitch-line chuck body (1).