CN202367285U

CN202367285U - Two motor drive cutter frame rotation mechanism

Info

Publication number: CN202367285U
Application number: CN 201120562771
Authority: CN
Inventors: 李樟; 李先广; 李明伟; 陈剑; 廖承渝; 梁博; 刘宇
Original assignee: Chongqing Machine Tool Group Co Ltd
Current assignee: Chongqing Machine Tool Group Co Ltd
Priority date: 2011-12-29
Filing date: 2011-12-29
Publication date: 2012-08-08
Anticipated expiration: 2021-12-29

Abstract

The utility model discloses a two motor drive cutter frame rotation mechanism which comprises a worm wheel connected with a hob cutter frame, and two worms in transmission fit with the worm wheel, wherein each worm is separately connected with a drive motor. When the two motor drive cutter frame rotation mechanism drives a heavy cutter frame to rotate, the two worms can simultaneously contact with the front tooth surface of the worm wheel, so as to reduce the stress of single worm, and to be beneficial to prolonging service lives of the worm wheel and the worms; during rotation, one worm can contact with the front tooth surface of a worm wheel gear, and the other worm can contact with the rear tooth surface of the worm wheel gear, so that speed fluctuation caused by the fit clearance between the worm wheel and the worms during the rotation of the worm wheel is eliminated, a hob can accurately rotate to a required adjustment angle, and the adjustment time of the hob can be reduced; and the angle of the hob is properly adjusted, the two worms respectively contact with the front tooth surface and the rear tooth surface of the worm wheel, and the worm wheel can not rotate in both clockwise direction and counter-clockwise direction, so that the angle of the hob can not be changed after adjustment.

Description

Double dynamical driving knife rest slew gear

Technical field

The utility model relates to a kind of gear-hobbing machine, particularly a kind of double dynamical driving knife rest slew gear of gear-hobbing machine.

Background technology

The double dynamical driving knife rest of gear-hobbing machine slew gear is single worm gear list worm drive mechanism in the prior art, and worm gear is connected with hob arbor carriage, rotates through a worm drive worm gear and regulates the hobboing cutter angle.

Owing to have fit clearance between worm and gear, therefore there is following defective in single worm gear list worm drive mechanism:

1, after the hobboing cutter angle adjustment puts in place, because the fit clearance between worm and gear causes adjusted hobboing cutter angle to change easily;

2, owing to the fit clearance between worm and gear, there was fluctuation in rotational angular velocity when worm gear rotated, and caused hob arbor carriage can accurately not forward the adjusting angle of needs to easily;

3, for big lathe, lathe cutter saddle is heavier, but worm screw is stressed bigger, easy abrasion, and the worm screw modulus is bigger, and the gap between worm and worm wheel is bigger.

Therefore need improve the double dynamical driving knife rest of existing gear-hobbing machine slew gear, to eliminate the defective of existing driving mechanism.

The utility model content

In view of this; The purpose of the utility model provides a kind of double dynamical driving knife rest slew gear; This driving mechanism can guarantee that the angle after hobboing cutter is regulated remains unchanged, hobboing cutter can accurately turn to the adjusting angle that needs in adjustment process, thereby eliminates the defective that existing single worm gear list worm drive mechanism exists.

The double dynamical driving knife rest of the utility model slew gear comprises the worm gear that is connected with hob arbor carriage, also comprises two worm screws that cooperate with worm-drive, and every worm screw is singly connected with a drive motors.

Further, two worm screws are arranged in parallel.

The beneficial effect of the utility model:

1, the double dynamical driving knife rest of the utility model slew gear; When driving heavier blade holder turns; Two worm screws can contact with the preceding flank of tooth of worm gear simultaneously, thereby reduce the stressed of single worm screw, help prolonging the worm and wormwheel life-span; Can select the worm screw of less modulus when also making design, thereby reduce the fit clearance between worm gear and worm screw.

2, the double dynamical driving knife rest of the utility model slew gear; Controlling worm gear through two worm screws of two drive motor drives rotates; The back flank of tooth contact of the preceding flank of tooth contact of worm and worm wheel gear teeth, another worm and worm wheel gear teeth in the time of can realizing rotating, thus the velocity perturbation that worm gear causes because of the fit clearance between worm and gear eliminated in rotation process, can make the adjusting angle that hobboing cutter turns to accurately to be needed; Degree of regulation is high, and can shorten hobboing cutter and regulate the time.

3, the double dynamical driving knife rest of the utility model slew gear; After the hobboing cutter angular adjustment puts in place; Two worm screws contact with the back flank of tooth with the preceding flank of tooth of worm gear respectively, and then worm gear all can not rotate at clockwise and counterclockwise both direction, and the hobboing cutter angle after can guaranteeing to regulate remains unchanged.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is the structural representation of the double dynamical driving knife rest of the utility model slew gear.

The specific embodiment

As shown in the figure, the double dynamical driving knife rest of present embodiment slew gear comprises the worm gear 2 that is connected with hob arbor carriage 1, also comprises two worm screws that cooperate with worm-drive 3, and every worm screw is singly connected with a drive motors 4.

This double dynamical driving knife rest slew gear; When driving heavier blade holder turns; Two worm screws 3 can contact with the preceding flank of tooth of worm gear 2 simultaneously, thereby reduce the stressed of single worm screw, help prolonging the worm and wormwheel life-span; Can select the worm screw of less modulus when also making design, thereby reduce the fit clearance between worm gear and worm screw; Drive two worm screws 3 through two drive motors 4 and control worm gear 2 rotations; The back flank of tooth contact of the preceding flank of tooth contact of worm and worm wheel gear teeth, another worm and worm wheel gear teeth in the time of can realizing rotating; Thereby eliminate the velocity perturbation that worm gear causes because of the fit clearance between worm and gear in rotation process; Can make the adjusting angle that hobboing cutter turns to accurately to be needed, degree of regulation is high, and can shorten hobboing cutter and regulate the time; After the hobboing cutter angular adjustment put in place, two worm screws contacted with the back flank of tooth with the preceding flank of tooth of worm gear respectively simultaneously, and then worm gear all can not rotate at clockwise and counterclockwise both direction, and the hobboing cutter angle after can guaranteeing to regulate remains unchanged.

In the present embodiment, two worm screws 3 are arranged in parallel, and this arrangement utilizes processing and manufacturing; Certainly two worm screws also can be selected other arrangement in different embodiment.

Explanation is at last; Above embodiment is only unrestricted in order to the technical scheme of explanation the utility model; Although with reference to preferred embodiment the utility model is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement the technical scheme of the utility model; And not breaking away from the aim and the scope of the utility model technical scheme, it all should be encompassed in the middle of the claim scope of the utility model.

Claims

1. a double dynamical driving knife rest slew gear comprises the worm gear that is connected with hob arbor carriage, it is characterized in that: also comprise two worm screws that cooperate with worm-drive, every worm screw is singly connected with a drive motors.

2. double dynamical driving knife rest slew gear according to claim 1, it is characterized in that: two worm screws are arranged in parallel.