CN209839066U

CN209839066U - Precision gear pair with rolling and meshing arc surfaces

Info

Publication number: CN209839066U
Application number: CN201920440653.XU
Authority: CN
Inventors: 牟庆平
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-03
Filing date: 2019-04-03
Publication date: 2019-12-24
Anticipated expiration: 2029-04-03

Abstract

The utility model provides a cambered surface rolling engagement precision gear pair, which comprises a cambered surface gear and a ball type gear, wherein the tooth surface of the cambered surface gear is a concave arc surface, and the engagement surface of the cambered surface gear is a concave arc surface; the ball type gear comprises a wheel disc shaft, two circular discs are fixedly arranged at two ends of the wheel disc shaft and are oppositely arranged, a plurality of axial rollers are uniformly distributed between the two circular discs along the circumferential direction, the rollers are arranged at the outer edges of the circular discs, two ends of each roller are rotatably supported on the circular discs through needle roller bearings, a plurality of steel balls are sleeved on each roller, and a spacing ring is arranged between every two adjacent steel balls; the ball type gear is in rolling engagement with the cambered surface gear through steel balls on the roller. The utility model discloses simple structure has increased the meshing area, and wearing and tearing are little, and the noise is little.

Description

Precision gear pair with rolling and meshing arc surfaces

Technical Field

The utility model relates to a gear pair technical field specifically is a cambered surface roll meshing's accurate gear pair.

Background

At present, a gear ring gear pair of a precise large-scale rotary table and a gear ring gear pair core component of a precise large-scale reduction gearbox in a numerical control precise indexing system in the field of heavy work machinery manufacturing in China are assembled components which are in zero back clearance precise gear ring gear pair rolling cylinder linear gapless meshing (see patent CN102913600A) of Japan Jiamao precision corporation, the tooth surface of the components is in cylinder linear meshing heavy load rolling hard pressing, the linear meshing area of the cylinder of the tooth surface is small, the tooth surface is easy to damage in long-term running, the components need to be repaired and replaced in time, and the service life is short.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model provides a cambered surface roll engagement's accurate gear pair, it includes cambered surface gear and roller type gear, the ball type gear through on its roller steel ball with cambered surface gear roll engagement has increased the meshing area, and wearing and tearing are little, and the noise is little.

The utility model discloses technical scheme as follows:

the utility model provides a precision gear pair of cambered surface rolling engagement which the key lies in:

the gear pair comprises a cambered surface gear and a ball type gear, the tooth surface of the cambered surface gear is a concave arc surface, and the meshing surface of the cambered surface gear is a concave arc surface;

the ball type gear comprises a wheel disc shaft, two circular discs are fixedly arranged at two ends of the wheel disc shaft and are oppositely arranged, a plurality of axial rollers are uniformly distributed between the two circular discs along the circumferential direction, the rollers are arranged at the outer edges of the circular discs, two ends of each roller are rotatably supported on the circular discs through needle roller bearings, a plurality of steel balls are sleeved on each roller, and a spacing ring is arranged between every two adjacent steel balls; the ball type gear is in rolling engagement with the cambered surface gear through steel balls on the roller.

Furthermore, the ball-type gear further comprises a spline shaft sleeve, and the two disks are fixed at two ends of the disk shaft through the spline shaft sleeve.

Furthermore, the ball-type gear further comprises two cover plates, the shape of each cover plate is matched with the corresponding disc, and the two cover plates are fixedly covered on the outer end faces of the two discs through screws respectively.

Since the technical scheme is used, the utility model discloses following beneficial effect has:

the utility model discloses the gear pair comprises cambered surface gear and ball type gear, the utility model discloses with designing into concave arc surface on the gear surface of cambered surface gear, the size of concave arc surface and the steel ball adaptation on the ball type gear, ball type gear pass through the steel ball on the roller with cambered surface gear's concave arc surface roll meshing, and then increase the meshing area. Like this in the power transmission, the utility model discloses but gear pair precision meshing each other is prolonged the orbit and is rolled the transmission of developing, there are 2 to 3 teeth in the transmission and closely mesh, ball type gear can the revolution but also can the autobiography, it is little to flank of tooth wearing and tearing among the meshing process, the noise generation is little, do not produce the clearance, and then delay the orbit and restore and change wearing and tearing part cycle, increased the heavy load and received the hard pressure ability, the blank of china's precision gear ring gear heavy load roll transmission has been filled, replace the precision gear ring gear byproduct of high-priced import, manufacturing cost and manufacturing cycle have been reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a sectional view taken along line A-A of FIG. 1;

FIG. 3 is an enlarged schematic view II of the tooth profile of the cambered surface gear in FIG. 1;

FIG. 4 is an enlarged schematic view I of the meshing of the roller gear and the arc gear of FIG. 1;

in the drawings: 1-a cambered surface gear; 101-tooth surface; 102-a threaded hole; 2-ball type gear; 201-a wheel disc shaft; 202-disc; 203-rollers; 204-needle bearing; 205-steel balls; 206-spacer ring; 207-spline shaft kit; 208-a cover plate; 209-screw.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the accompanying drawings.

In the present embodiment, the terms "upper", "lower", "left", "right", "front", "rear", "upper end", "lower end", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description, but do not indicate or imply that the designated device or element must have a specific orientation, be constructed in a specific orientation, or be operated, and thus, should not be construed as limiting the present invention.

The precision gear pair with the rolling meshing of the cambered surfaces as shown in fig. 1 comprises a cambered surface gear 1 and a ball type gear 2, wherein the tooth surface 101 of the cambered surface gear is a concave arc surface (shown in fig. 3), and the meshing surface of the cambered surface gear is a concave arc surface (shown in fig. 4). The cambered surface gear 1 is provided with a plurality of positioning threaded holes 102 for mounting and connecting the cambered surface gear and the workbench.

As shown in fig. 2, the ball-type gear 2 includes a wheel disc shaft 201, two disks 202 are fixedly disposed at two ends of the wheel disc shaft 201, the two disks 202 are arranged oppositely, a plurality of axial rollers 203 are uniformly distributed between the two disks along a circumferential direction, the rollers are arranged at outer edges of the disks, two ends of each roller 203 are rotatably supported on the disks 202 through a needle bearing 204, a plurality of steel balls 205 are sleeved on each roller, and a spacer 206 is disposed between adjacent steel balls 205.

As shown in fig. 2, the ball-type gear further includes a spline shaft kit 207, and the two disks 202 are fixed to both ends of the disk shaft 201 by the spline shaft kit 207. The ball type gear further comprises two cover plates 208, the shape of the cover plates is matched with that of the circular discs, and the two cover plates are fixedly covered on the outer end faces of the two circular discs through screws 209 respectively.

The utility model discloses two discs 202 pass through integral key shaft external member 207 to be fixed at the both ends of reel axle 201 and form the wheel plate rail, and roller 203 rotatably supports between two discs 202 through bearing 204, and a plurality of steel balls 205 are established to the cover on the roller, and the last is complete ball type gear through 13 apron, 14 screw assembly.

The utility model discloses the working process is as follows:

the utility model discloses the gear pair comprises cambered surface gear 1 and ball type gear 2, the utility model discloses with designing into concave arc surface on the gear surface 101 of cambered surface gear, the size of concave arc surface and the steel ball adaptation on the ball type gear, as shown in FIG. 4, ball type gear pass through the roller on the steel ball with cambered surface gear's concave arc surface roll meshing, and then increase the meshing area. Like this in the power transmission, the utility model discloses but gear pair precision meshing each other extends the orbit roll and develops the transmission, has 2 to 3 teeth in the transmission and closely meshes, and ball type gear can revolution but the autobiography again, and the meshing in-process is little to flank of tooth wearing and tearing, and the noise production is little, does not produce the clearance. The method has the advantages of delaying the period of track repair and worn part replacement, increasing the heavy-load hard-pressing capacity, filling the blank of the heavy-load rolling transmission of the precision gear ring in China, replacing a high-import precision gear ring byproduct, and reducing the manufacturing cost and the manufacturing period.

The utility model discloses a gear pair can be used to the core component of the accurate indexing system of manipulator intelligence, heavy industry, the accurate large-scale swivel work head and the accurate large-scale reduction box body.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art; the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. The utility model provides a precision gear pair of cambered surface rolling engagement which characterized in that:

2. The precision gear pair with rolling meshing arc surfaces as claimed in claim 1, wherein: the ball-type gear further comprises a spline shaft sleeve, and the two disks are fixed at two ends of the disk shaft through the spline shaft sleeve.

3. The precision gear pair with rolling meshing arc surfaces as claimed in claim 1, wherein: the ball type gear further comprises two cover plates, the shape of each cover plate is matched with that of the corresponding disc, and the two cover plates are fixedly covered on the outer end faces of the two discs through screws respectively.