CN205190676U

CN205190676U - Combined type gear

Info

Publication number: CN205190676U
Application number: CN201520981586.4U
Authority: CN
Inventors: 徐建军
Original assignee: Shanghai Zongli Printing And Packing Machinery Co Ltd
Current assignee: Shanghai Zongli Printing And Packing Machinery Co Ltd
Priority date: 2015-12-01
Filing date: 2015-12-01
Publication date: 2016-04-27
Anticipated expiration: 2025-12-01

Abstract

The utility model discloses a combined type gear, including a gear body, an anti -backlash gear and a cam pin. Rather than the hole integrative protruding cylindrical step of establishing coaxially, offer a plurality of threaded hole and a radial kidney slot on the step face of this gear body on the terminal surface of gear body the equipartition, anti -backlash gear's gear module is the same with the gear module of gear body, correspond on this anti -backlash gear's the terminal surface a plurality of threaded hole one -to -one ground on the gear body set up a plurality of circumference to the waist through -hole that appears, and set up and the pinhole that the kidney slot corresponds, the cam pin is fixed in anti -backlash gear's pinhole, anti -backlash gear with one end of cam pin insert the mode suit of the kidney slot of gear body on the step of gear body and through a plurality of one -to -one pass the step face of bolt fastening at the gear body of a plurality of waist shape through -hole on. The utility model discloses a combined type gear can eliminate the tooth clearance to improve transmission precision.

Description

A kind of built up gear

Technical field

The utility model relates to a kind of built up gear.

Background technique

Gear transmission is a kind of common kind of drive in mechanical transmission, is widely used in each large production field.But in a kind of special production field, particularly in circular pressing and cutting equipment, in conventional gear transmission, the existence of backlash will have a strong impact on the precision of die cutting product.In addition, at some Gear centers apart from the occasion changed, the drawback that there is backlash in conventional gear transmission is just more obvious, when Gear center is apart from when becoming large, backlash just increases thereupon, and its future trouble brought is: transmission accuracy reduces, the unfavorable factors such as increase, gear life reduction are impacted in transmission.

Model utility content

The purpose of this utility model is to overcome the defect of prior art and provides a kind of built up gear, and it can eliminate backlash, thus improves transmission accuracy.

The purpose of this utility model is achieved in that a kind of built up gear, comprises a gear, a clearance elimination gear and a cam pin, wherein,

With its female coaxial ground one projection one cylindrical step on one end face of described gear, the step surface of this gear is offered in uniform way the kidney slot that several threaded perforations one are radial;

The module of described clearance elimination gear is identical with the module of gear, and the external diameter of the step in the internal diameter of this clearance elimination gear and described gear is adaptive; Several threaded perforations on the end face of this clearance elimination gear on corresponding gear body offer several circumferential waist through hole correspondingly, and offer the pin-and-hole corresponding with described kidney slot;

Described cam pin is fixed in the pin-and-hole of described clearance elimination gear;

Described clearance elimination gear to be sleeved on the step of described gear in the mode that the eccentric head of described cam pin is inserted in the kidney slot of described gear and by several correspondingly through on the step surface being bolted to described gear of several waist through hole.

Above-mentioned built up gear, wherein, the kidney slot in described gear to be opened in and on the same circumference of several threaded perforations and between two threaded perforations.

The technological scheme of built up gear of the present utility model, have structure simple, the features such as transmission accuracy is high, smooth running, and transmission impact force is little, can eliminate backlash, thus improve transmission accuracy.

Accompanying drawing explanation

Fig. 1 a is the sectional drawing of built up gear of the present utility model;

Fig. 1 b is the side view of Fig. 1 a;

Fig. 2 a is the sectional drawing of the gear in built up gear of the present utility model;

Fig. 2 b is the side view of Fig. 2 a;

Fig. 3 a is the sectional drawing of the clearance elimination gear in built up gear of the present utility model;

Fig. 3 b is the side view of Fig. 3 a.

Embodiment

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Refer to Fig. 1 to Fig. 3 b, built up gear of the present utility model, comprise gear 1, clearance elimination gear 2, cam pin 3 and three bolts 4, wherein,

With its female coaxial ground one projection one cylindrical step 10 on one end face of gear 1, for installing clearance elimination gear 2 and making it location; The step surface of this gear 1 is offered in uniform way three threaded perforations 11 and a kidney slot 12, these three threaded perforations 11 are uniform to be opened on same circumference; Kidney slot 12 to be opened in and on three same circumferences of threaded perforations 11 and between two threaded perforations 11;

The wheel modulus of clearance elimination gear 2 is identical with the module of gear 1; The external diameter of the internal diameter of clearance elimination gear 2 and the step 10 of gear 1 is adaptive; The end face of this clearance elimination gear 2 is offered three circumferential waist through hole 21 corresponding with the threaded perforations 11 in gear 1 and the pin-and-hole 22 corresponding with kidney slot 12;

Cam pin 3 is fixed in the pin-and-hole 22 of clearance elimination gear 2;

The step 10 that clearance elimination gear 2 is inserted in the kidney slot 12 of gear 1 mode with the eccentric head of cam pin 3 is sleeved on gear 1 is fixed on the step surface of gear 1 through waist through hole 21 bolt 4 by three.

Built up gear of the present utility model, identical with the gear of routine in use, can with another gears meshing.When the backkick backlash that built up gear of the present utility model is meshed with it is excessive, first unclamp three bolts 4, rotate cam pin 3 again, drive clearance elimination gear 2 to turn an angle by cam pin 3 and with the Gear Contact be meshed, then fastening three bolts 4, reach the object of backlash between elimination two meshed gears, operate very simple.

Built up gear of the present utility model, has the features such as structure is simple, transmission accuracy is high, smooth running, transmission impact force are little, can be widely used in the mechanical structure of precision gear transmission.

Above embodiment is only for illustration of the utility model, but not to restriction of the present utility model, person skilled in the relevant technique, when not departing from spirit and scope of the present utility model, various conversion or modification can also be made, therefore all equivalent technological schemes also should belong to category of the present utility model, should be limited by each claim.

Claims

1. a built up gear, comprises a gear, a clearance elimination gear and a cam pin, it is characterized in that,

2. built up gear according to claim 1, is characterized in that, the kidney slot in described gear to be opened in and on the same circumference of several threaded perforations and between two threaded perforations.