CN211344000U - Automatic gear shifting structure of lathe gearbox - Google Patents

Abstract

The utility model relates to the technical field of gearboxes, in particular to an automatic gear shifting structure of a lathe gearbox, a driving motor is arranged on the side wall of the box body of the gearbox, the driving motor is connected with a driving screw rod, the driving screw rod is rotationally connected inside the box body, the driving screw rod is sleeved with a shifting fork, a switch contact rod which is vertically upward is fixed on the shifting fork, at least two groups of proximity switches are fixed on the top wall of the box body of the gearbox, the proximity switches are positioned right above the driving screw rod, the shifting fork is connected with the shifting gear group, the utility model has the advantages that the precise control of the shifting gear group on the position of the spline shaft is realized by the cooperation of the proximity switch, the shifting fork and the driving motor, therefore, automatic and accurate gear shifting action is realized, abrasion among meshing parts is reduced, forced gear shifting is avoided, and the service life of the whole gear box is prolonged.

Description

Automatic gear shifting structure of lathe gearbox

Technical Field

The utility model belongs to the technical field of the gearbox technique and specifically relates to a lathe gearbox automatic gear shifting structure.

Background

The gear shifting of the lathe spindle is controlled through the gearbox, the existing lathe gearbox is usually a manual gearbox, the improper gear shifting force can cause overlong synchronization time, the abrasion of an engaging part is accelerated, forced gear shifting can also be generated, the deformation of a friction pair is caused, and meanwhile, the labor intensity of an operator can be increased through manual operation of an operator.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of current manual gear shifting of lathe gearbox, the utility model provides a lathe gearbox automatic gear shifting structure.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a lathe gearbox automatic gearshift structure, installs driving motor at the box lateral wall of gearbox, driving motor links to each other with the drive lead screw, the drive lead screw rotates to be connected inside the box, the drive lead screw has cup jointed the shift fork, be fixed with vertical ascending switch contact pole on the shift fork, be fixed with at least two sets of proximity switch on the roof of the box of gearbox, proximity switch is located drive lead screw directly over, the shift fork links to each other with the stirring gear group.

According to the utility model discloses a further embodiment, further include, the shift fork passes through the driving nut and links to each other with the drive screw rod. Adopt split type structure, prevent scraping of shift fork overall structure, have economic nature.

According to the utility model discloses a further embodiment, further include, driving motor is gear reduction motor, and gear reduction motor has that the precision is high, the contact nature is good, operate steadily, the noise is low, small, advantages such as light in weight, long service life and bearing capacity height.

According to the utility model discloses a further embodiment, further include, driving motor passes through the shaft coupling and links to each other, guarantees to reliably and accurately connect between the two.

According to another embodiment of the present invention, the driving screw is rotatably connected to the box body through a first screw shaft bearing and a second screw shaft bearing. The driving screw rod is supported by the two groups of bearing seats, the rotation is flexible, impact load can be borne, and the stable operation of the gear shifting structure is ensured.

According to the utility model discloses a further embodiment, further include, the striking gear group is provided with the annular to can promote to control about the striking gear group.

The beneficial effects of the utility model are that, utilize proximity switch, shift fork, driving motor mating reaction, realize the accurate control to stirring the gear train on the integral key shaft position to realize automatic, accurate action of shifting, reduce the wearing and tearing between the meshing piece, avoid compulsively shifting, improve the holistic life of gear box.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is a perspective view of the present invention;

fig. 2 is a left side view of the present invention;

fig. 3 is a sectional view taken along line a-a of the present invention;

fig. 4 is a B-B sectional view of the present invention;

fig. 5 is a schematic diagram of a fork structure.

In the drawing, the screw driver comprises a driving motor 1, a driving screw rod 2, a driving screw rod 3, a driving nut 4, a shifting fork 5, a switch contact rod 6, a proximity switch 7, a shifting gear set 7-1, a ring groove 8, a coupler 9, screw rod bearing blocks I and 10, screw rod bearing blocks II and 11, a box body 12 and a spline shaft.

Detailed Description

Fig. 1 to 4 are the utility model discloses a structural schematic diagram, a lathe gearbox automatic gearshift structure installs driving motor 1 at the box 11 lateral wall of gearbox, driving motor 1 links to each other with drive screw 2, drive screw 2 rotates and connects inside box 11, drive screw 2 has cup jointed shift fork 4, be fixed with vertical ascending switch contact pole 5 on the shift fork 4, be fixed with at least two sets of proximity switch 6 on the roof of the box 11 of gearbox, proximity switch 6 is located drive screw 2 directly over, shift fork 4 links to each other with toggle gear 7.

The specific action principle is as follows: every proximity switch 6 position is different, correspond different fender position, when driving motor 1 starts, it is rotatory to drive lead screw 2, because drive lead screw 2 both ends are spacing, 4 axial rectilinear motion of shift fork can be changed into to its threaded rotary motion, shift fork 4 can the horizontal slip on drive lead screw 2 promptly, shift fork 4 with link to each other with toggle gear group 7, can promote toggle gear group 7 horizontal slip on integral key shaft 12, switch contact pole 5 when the 4 upper ends of shift fork slides to one of them proximity switch (this moment, the gear engagement of the fender position that toggle gear group 7 and proximity switch 6 correspond), proximity switch 6 triggers, send the switching signal of telecommunication, thereby realize the control to driving motor 1, realize automatic shifting.

In this application, proximity switch 6 is M8x1 normal open type, proximity switch is a switch type sensor among the prior art, has the sensing performance, and the action is reliable, the stable performance, frequency response is fast, long service life, the interference killing feature is strong etc., and have waterproofly, characteristics such as corrosion-resistant, accurate control to driving motor 1 through proximity switch 6, and then control shift fork 4's position, control the position of toggle gear group 7 on integral key shaft 12 promptly, make toggle gear group 7 and specific gear engagement, thereby alleviate operator's intensity of labour, realize automatically, accurate gear shifting action, reduce the wearing and tearing between the meshing part, avoid compulsive gear shifting, improve the holistic life of gear box.

In this application, the box 11 of the gearbox of lathe is equipped with four fender positions: the high-speed gear of H, the middle-speed gear of M, N neutral gear and L keep off respectively, therefore be provided with four proximity switch 6 on the box 11 altogether, four keep off the position and make toggle gear 7 move to corresponding position by shifting out fork 4, switch contact pole 5 moves to the proximity switch 6 of corresponding fender position after, proximity switch 6 sends the switching signal of telecommunication, control driving motor 1's stopping to realize the meshing of gear and change speed and automatic gear shifting.

According to another embodiment of the present invention, further comprising, the shift fork 4 is connected with the driving screw 2 through the driving nut 3. Adopt split type structure, the internal thread through drive nut 3 links to each other with drive lead screw 2, when the internal thread damages, can change drive nut 3 to prevent scraping of 4 overall structure of shift fork, have economic nature.

According to the utility model discloses a further embodiment, further include, driving motor 1 is gear reduction motor, and gear reduction motor has that the precision is high, the contact nature is good, operate steadily, the noise is low, small, advantages such as light in weight, long service life and bearing capacity height.

According to the utility model discloses a further embodiment, further include, driving motor 1 links to each other through shaft coupling 8, guarantees to connect reliably and accurately between the two.

According to another embodiment of the present invention, the driving screw 2 is rotatably connected to the box 11 through a first screw shaft bearing 9 and a second screw shaft bearing 10. The driving screw rod 2 is supported by the two groups of bearing seats, the driving screw rod 2 is guaranteed to rotate flexibly, impact load can be borne, and the gear shifting structure is guaranteed to operate stably.

According to another embodiment of the present invention, further comprising, the toggle gear set 7 is provided with a ring groove 7-1, and the end of the shift fork 4 is located in the ring groove 7-1. As shown in figures 3 and 5, the shifting fork 4 is limited left and right by the ring groove 7-1, so that the shifting gear group 7 can be pushed to move left and right.

The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (6)

1. The utility model provides a lathe gearbox automatic gear shifting structure, characterized by installs driving motor (1) at box (11) lateral wall of gearbox, driving motor (1) links to each other with drive lead screw (2), drive lead screw (2) rotate to be connected inside box (11), shift fork (4) have been cup jointed in drive lead screw (2), be fixed with vertical ascending switch contact pole (5) on shift fork (4), be fixed with at least two sets of proximity switch (6) on the roof of box (11) of gearbox, proximity switch (6) are located drive lead screw (2) directly over, shift fork (4) link to each other with toggle gear set (7).

2. The automatic gear shifting structure of the lathe gearbox as claimed in claim 1, wherein the shift fork (4) is connected with the driving screw rod (2) through a driving nut (3).

3. The automatic gear shifting structure of a lathe gearbox according to claim 1, characterized in that the driving motor (1) is a gear reduction motor.

4. The automatic gear shifting structure of a lathe gearbox according to claim 1, characterized in that the driving motor (1) is connected through a coupling (8).

5. The automatic gear shifting structure of the lathe gearbox as claimed in claim 1, wherein the driving screw (2) is rotatably connected with the box body (11) through a screw shaft bearing block I (9) and a screw shaft bearing block II (10).

6. The automatic gear shifting structure of the lathe gearbox as claimed in claim 1, wherein the toggle gear set (7) is provided with a ring groove (7-1), and the end of the shifting fork (4) is positioned in the ring groove (7-1).

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