CN208578929U - A kind of precision gear case - Google Patents

Abstract

The utility model discloses a kind of precision gear casees, it is related to gear transmission technology field, including hollow cabinet, the output gear for being disposed with the reduction assemblies for engaging with input gear in the cabinet and being engaged with the reduction assemblies, the reduction assemblies include the gear wheel engaged with input gear and the pinion gear with the gear wheel with revolving speed, the gear wheel and pinion gear are rotated coaxially by adjustment axis realization, the pinion gear is engaged with output gear, and the adjustment axis has moveable stroke in the radial direction thereof.The utility model is by designing the gear wheel rotated coaxially and pinion gear, and the position by mobile adjustment axis in the radial direction thereof, eliminate the gap between pinion gear and output gear, the utility model structure is simple, with good transmission stiffness and transmission stability, higher power can be transmitted, transmission efficiency is provided.

Description

A kind of precision gear case

Technical field

The utility model relates to gear transmission technology field, in particular to a kind of precision gear case.

Background technique

Currently, either four axis robots or six-joint robot, based on being transmission with high precision, as important Transmission parts, i.e. reduction gear box plays an important role, but since processing misses between two meshing gears inside gear-box It is poor often to occur being unable to satisfy the high-precision requirement of robot in transmission there are fit-up gap.

Summary of the invention

The purpose of this utility model is to provide a kind of precision gear case, it is intended to eliminate the gap between transmission gear, improve Transmission accuracy.

Used technical solution to solve above-mentioned technical problem:

A kind of precision gear case is disposed with the deceleration for engaging with input gear including hollow cabinet in the cabinet Component and the output gear engaged with the reduction assemblies, the reduction assemblies include the gear wheel engaged with input gear and It is rotated coaxially with the pinion gear of revolving speed, the gear wheel and pinion gear by adjustment axis realization with the gear wheel, the pinion gear It is engaged with output gear, the adjustment axis has moveable stroke in the radial direction thereof, and the cabinet is equipped with the control tune The adjusting component that nodal axisn moves radially.

As a further improvement of the above technical scheme, the component that adjusts includes the bearing for adjustment axis described in support Seat, the bearing block are fixed in the cabinet by pin and at least one bolt, which is equipped with wears for the pin The pin hole crossed and the bolt hole passed through for the corresponding bolt, the activity that there is each bolt hole respective bolt to adjust are empty Between.

As a further improvement of the above technical scheme, the minimum negative common difference of each bolt hole is not less than 0.1mm.

As a further improvement of the above technical scheme, each bolt hole is arcuate socket, the arc core of each bolt hole On the pin axis.

As a further improvement of the above technical scheme, the side wall of the bearing block towards the output gear is disposed with recessed Mouthful, the output gear is partially embedded into the recess.

As a further improvement of the above technical scheme, the gear wheel, the pinion gear and output gear are circle Column helical gear.

As a further improvement of the above technical scheme, it is corresponding with the adjustment axis to be disposed at least one for the bearing block First bearing.

As a further improvement of the above technical scheme, the output gear is connected with output shaft, and the cabinet arrangement has At least one second bearing corresponding with the output shaft, the cabinet are equipped with the opening for the output axis connection, each described to open Mouth is arranged with outside framework oil seal.

The beneficial effects of the utility model are: the utility model passes through the gear wheel and pinion gear that design rotates coaxially, and By the position of mobile adjustment axis in the radial direction thereof, the gap between pinion gear and output gear, the utility model structure are eliminated Simply, there is good transmission stiffness and transmission stability, higher power can be transmitted, transmission efficiency is provided.

Detailed description of the invention

It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Attached drawing to be used is briefly described.Obviously, described attached drawing is a part of the embodiment of the utility model, rather than complete Portion's embodiment, those skilled in the art without creative efforts, can also be obtained according to these attached drawings it His design scheme and attached drawing.

Fig. 1 is the perspective view at first visual angle of the utility model；

Fig. 2 is the perspective view at second visual angle of the utility model, wherein not showing cabinet lower cover；

Fig. 3 is the perspective view at the utility model third visual angle, wherein not showing box cover；

Fig. 4 is the bottom view of the utility model；

Fig. 5 be in Fig. 4 A-A to cross-sectional view；

Fig. 6 is the assembling schematic diagram of gear wheel in the utility model, pinion gear, adjustment axis and bearing block；

Fig. 7 is the structural schematic diagram of the utility model bottom bracket.

Specific embodiment

It is carried out below with reference to technical effect of the embodiment and attached drawing to the design of the utility model, specific structure and generation It clearly and completely describes, to be completely understood by the purpose of this utility model, feature and effect.Obviously, described embodiment It is a part of the embodiment of the utility model, rather than whole embodiments, it is based on the embodiments of the present invention, the skill of this field Art personnel other embodiments obtained without creative efforts belong to the model of the utility model protection It encloses.In addition, all connection/connection relationships being previously mentioned in text, not singly refer to that component directly connects, and referring to can be according to specific reality Situation is applied, by adding or reducing couple auxiliary, Lai Zucheng more preferably coupling structure.

Referring to figs. 1 to Fig. 5, a kind of precision gear case, including hollow cabinet 10, cabinet 10 includes box cover 11 and case Body lower cover 12.The output for being disposed with the reduction assemblies for engaging with input gear in cabinet 10 and being engaged with the reduction assemblies Gear 24, decelerating motor include gear wheel 21 and the pinion gear 22 with the gear wheel 21 with revolving speed, gear wheel 21 and pinion gear 22 are rotated coaxially by the realization of adjustment axis 23, and gear wheel 21 is engaged with input gear, and pinion gear 22 is engaged with output gear 24, i.e., Input gear, gear wheel, pinion gear and output gear are successively driven.Wherein, each figure does not show input gear, can refer to Fig. 1, Box cover is disposed with the pedestal 50 of fixed driving motor, and after driving motor is fixed, drive shaft protrudes into the axis of box cover 1 Hole, input gear are arranged on the end of the drive shaft.Preferably, gear wheel 21, pinion gear 22, input gear and output gear Wheel 24 is cylindric spiral gear.

Further, in conjunction with Fig. 6 and Fig. 7, adjustment axis 23 has moveable stroke in the radial direction thereof, particular by peace Adjusting component in cabinet 10 controls to adjust the stroke that axis 23 moves radially, and to adjust component include being used for support adjustment axis 23 bearing block 30, the bearing block 30 are fixed in cabinet 10 by pin 31 and at least one bolt 32, the bearing block 30 Equipped with the pin hole passed through for pin 31 and the bolt hole passed through for respective bolt 32, each bolt hole is adjusted with respective bolt 32 The activity space of section.In transmission process, pin 31 is main stressed member, and in assembling process, each bolt 32 is not locked, Operator can slight amplitude rotating shaft holder 30, and then engage pinion gear 22 with output gear 24, eliminate backlash between the two, And the general 0.05mm of mismachining tolerance of usually gear is hereinafter, therefore by the processing dimension design ratio of each bolt hole and respective bolt 32 The big 0.1mm of fit dimension, the minimum negative common difference of each bolt hole can be defined as 0.1mm.After regulating bearing block 30, pass through Each bolt 32 is locked.In addition, each bolt hole can be also designed as to arcuate socket, the arc core of each bolt hole is located at 31 axis of pin On, the distance radially movable in respective bolt holes of bolt 32 also substantially 0.1mm.In the design, specific bolt hole plus Chinese musical scale cun can be selected according to Errors in Gear Processing.

Preferably, the side wall of bearing block 30 towards output gear 24 is disposed with recess 33, and output gear 24 is partially embedded into In recess 33.

Preferably, bearing block 30 is disposed at least one first bearing 34 corresponding with adjustment axis 23, gear wheel 21 and tune Nodal axisn 23 is affixed, and pinion gear 22 and adjustment axis 23 are affixed.Output gear 24 is connected with output shaft 25, which is in hollow Shape, cabinet 10 are disposed at least one second bearing 26 corresponding with the output shaft 25, and cabinet 10 is equipped with to be connected for output shaft 25 Opening, each opening is arranged with outside framework oil seal 27, and 25 one end of output shaft is connected with output flange 40.

The embodiments of the present invention is explained in detail above in conjunction with attached drawing, but the utility model is not limited to State embodiment, within the scope of knowledge possessed by those of ordinary skill in the art, can also do not depart from it is practical Various changes can be made under the premise of novel objective.

Claims (8)

1. a kind of precision gear case, it is characterised in that: be disposed with including hollow cabinet (10), in the cabinet (10) for it is defeated The output gear (24) for entering the reduction assemblies of gear engagement and engaging with the reduction assemblies, the reduction assemblies include and input Gear engagement gear wheel (21) and with the gear wheel (21) with the pinion gear (22) of revolving speed, the gear wheel (21) and small tooth Wheel (22) realizes by adjustment axis (23) and rotates coaxially that the pinion gear (22) is engaged with output gear (24), the adjustment axis (23) there is moveable stroke in the radial direction thereof, the cabinet (10) is equipped with what the control adjustment axis (23) moved radially Adjust component.

2. precision gear case according to claim 1, it is characterised in that: the adjusting component includes for adjusting described in support The bearing block (30) of nodal axisn (23), the bearing block (30) are fixed on the case by pin (31) and at least one bolt (32) In body (10), which is equipped with the pin hole for supplying the pin (31) to pass through and passes through for the corresponding bolt (32) Bolt hole, each bolt hole have respective bolt (32) adjust activity space.

3. precision gear case according to claim 2, it is characterised in that: the minimum negative common difference of each bolt hole is not less than 0.1mm。

4. precision gear case according to claim 2, it is characterised in that: each bolt hole is arcuate socket, each spiral shell The arc core of keyhole is located on the pin (31) axis.

5. precision gear case according to claim 3 or 4, it is characterised in that: the bearing block (30) is towards the output The side wall of gear (24) is disposed with recess (33), and the output gear (24) is partially embedded into the recess (33).

6. precision gear case according to claim 5, it is characterised in that: the gear wheel (21), the pinion gear (22) And output gear (24) is cylindric spiral gear.

7. precision gear case according to claim 5, it is characterised in that: the bearing block (30) be disposed at least one with The corresponding first bearing (34) of the adjustment axis (23).

8. precision gear case according to claim 5, it is characterised in that: the output gear (24) is connected with output shaft (25), the cabinet (10) is disposed at least one second bearing (26) corresponding with output shaft (25), the cabinet (10) Equipped with the opening for the output shaft (25) connection, each opening is arranged with outside framework oil seal (27).