CN102767606A

CN102767606A - Modified cylindrical gear

Info

Publication number: CN102767606A
Application number: CN2012102667487A
Authority: CN
Inventors: 张龙弟
Original assignee: ZHEJIANG LONGLI MACHINERY CO Ltd
Current assignee: ZHEJIANG LONGLI MACHINERY CO Ltd
Priority date: 2012-07-30
Filing date: 2012-07-30
Publication date: 2012-11-07

Abstract

The invention discloses a modified cylindrical gear. Gear teeth are uniformly distributed on the peripheral edge of the gear, the thickness of each gear tooth is 17-18.5mm, and the depth of the tooth space between the gear teeth is 29-33mm. The invention designs a modified cylindrical gear capable of adjusting the vertical position of a mold for a forging rolling machine, the outside diameter of the gear is changed on the modified gear by design, the tooth depth of the gear is increased, and the modified gear is mounted on one end of an upper and a lower roller shaft of the forging rolling machine, the gear clearance of the modified cylindrical gear has a change smaller than 1.5mm by adjusting the lifting distance of the upper roller shaft at 5mm, and the tooth depth of the gear is changed by design so that the gear engagement length is increased during the working process to improve the service life of the gear.

Description

A kind of displacement cylindrical gears

Technical field

The present invention relates to a kind of gear, particularly a kind of displacement cylindrical gears.

Background technique

Existing semicircle rolls the gear drive that prolongs machine and adopts the GB cylindrical gears more, and the Gear center distance that this column gear transmission need be fixed is movably but the semicircle on the existing market rolls the topping roll that prolongs machine; After topping roll moved up, it is big that roll centre distance becomes, and the tooth interlock distance of the transmission cylindrical gears of roll one end is along with becoming big; The swing of topping roll is also along with becoming big; The blank that roll forging goes out is asymmetric and distortion is bigger, and service life of gear is low, and processing has increased difficulty to postorder; Reduce work efficiency, increased processing cost.

Fig. 1, the gear shown in 2 are the GB cylindrical gears, and its gear teeth width D is 15.7mm, and gullet depth H is 22.5mm.

Summary of the invention

The present invention has overcome the deficiency that exists in the above-mentioned existing technology; Provide a kind of and satisfied the up-down that semicircle rolls the last roll shaft that prolongs machine, and the tooth interlock distance of driving gear is not increased, reached semicircle and rolled the roll forging demand of prolonging machine; Blank precision height, steady quality, work efficiency to following process provides is fast, the novel displacement cylindrical gears of low cost of manufacture; Change the gullet depth of gear through design, made gear increase length of action in the course of the work, prolonged the working life of gear.

Technological scheme of the present invention is achieved in that

A kind of displacement cylindrical gears is evenly distributed with the gear teeth at the periphery of gear, and the thickness of the gear teeth is 17～18.5mm, and the degree of depth of teeth groove is 29～33mm between the gear teeth.

As preferably, the thickness of the gear teeth is 17.7mm, and the degree of depth of teeth groove is 31.5mm between the gear teeth.

Adopted the invention has the beneficial effects as follows of technique scheme:

The present invention has designed a kind of semicircle and has rolled the displacement cylindrical gears that prolongs machine adjusting mould upper-lower position; On this modified gear, changed the external diameter of gear through design; Increased the tooth depth of gear, and be installed in the end that semicircle rolls the upper and lower roll mandrel that prolongs on the machine, rolled the last roll shaft lifting distance 5mm that prolongs machine through regulating semicircle; The gear clearance of displacement cylindrical gears changes less than 1.5mm; Change the tooth depth of gear through design, made gear increase length of action in the course of the work, improved the working life of gear.

Description of drawings

Fig. 1 is the structural representation of GB cylindrical gears in the existing technology;

Fig. 2 is the A portion enlarged view of Fig. 1;

Fig. 3 is the structural representation of displacement cylindrical gears of the present invention;

Fig. 4 is the A portion enlarged view of Fig. 3;

Fig. 5 is the working state schematic representation of gear of the present invention;

Fig. 6 is the A portion enlarged view of Fig. 5.

Embodiment

Embodiment of the present invention is following:

Embodiment: a kind of displacement cylindrical gears, like Fig. 3, shown in 4, be evenly distributed with the gear teeth 2 at the periphery of gear 1, the thickness D of the gear teeth 2 is 17.7mm, the depth H of 2 teeth groove 3 of the gear teeth is 31.5mm.

Like Fig. 5, shown in 6; Displacement cylindrical gears of the present invention is installed in the end that semicircle rolls the upper and lower roll mandrel that prolongs on the machine in use; Raise semicircle through adjusting and roll the last roll shaft that prolongs machine, both centre distance X are changed, and since this displacement cylindrical gears through changed gullet depth through design; Make gear increase length of action in the course of the work, so roll shaft can not produce swing.

Claims

1. displacement cylindrical gears is evenly distributed with the gear teeth at the periphery of gear, and it is characterized in that: the thickness of the gear teeth is 17～18.5mm, and the degree of depth of teeth groove is 29～33mm between the gear teeth.

2. a kind of displacement cylindrical gears according to claim 1, it is characterized in that: the thickness of the gear teeth is 17.7mm, the degree of depth of teeth groove is 31.5mm between the gear teeth.