CN103722429A

CN103722429A - Eight-stage speed change mechanism of single-face curve disk

Info

Publication number: CN103722429A
Application number: CN201310751674.0A
Authority: CN
Inventors: 杜可庆
Original assignee: HUANGSHAN YONGFENG MECHANICAL AND ELECTRICAL MANUFACTURING Co Ltd
Current assignee: HUANGSHAN YONGFENG MECHANICAL AND ELECTRICAL MANUFACTURING Co Ltd
Priority date: 2013-12-31
Filing date: 2013-12-31
Publication date: 2014-04-16
Anticipated expiration: 2033-12-31
Also published as: CN103722429B

Abstract

The invention belongs to the field of machinery fitting design and manufacture and particularly relates to an eight-stage speed change mechanism of a single-face curve disk, wherein the eight-stage speed change mechanism is used for a gearbox of a machine tool. According to the eight-stage speed change mechanism of the single-face curve disk, the curve disk is rotationally connected with a gearbox body of the machine tool through a handle shaft fixedly and coaxially connected with the curve disk, a curve groove is formed in one end face of the curve disk, three levers are arranged on the box body of the gearbox, the rotation center axes of the levers are parallel with the axis of the handle shaft, a sliding sleeve is arranged at one end of each lever, a shifting block is arranged at the other end of each lever, the sliding sleeves are arranged in the curve groove and in sliding fit with the curve groove, the shifting blocks are connected with shifting forks, and the shifting forks are connected with duplicate gears. On the basis of an original curve disk shifting fork mechanism, a new curve groove shape is designed, the three shifting forks can be made to move according to a certain rule just by arranging the curve groove in one end face of the curve disk so that the eight-stage speed regulation purpose can be achieved, and the structure of an original eight-stage gearbox is greatly simplified.

Description

Eight grades of gears of one side curve disc

Technical field

The invention belongs to Machine Tool design and manufacture field, be specifically related to a kind of eight grades of gears of one side curve disc for lathe gearbox.

Background technology

At present in common metal stock-removing machine, the multi-change speed of mechanical transmission type main shaft, mostly in the following ways, a kind of mode is that single handle is controlled the slippage engagement that single shift fork is realized one group of shifting slide gear, by a plurality of handles, realize the slippage of many group shifting slide gears and mesh, reach the object of main shaft multi-stage speed.Another kind of mode is to utilize a handle to drive one side curve disc to control four kinds of engagement combinations of slippage acquisition that two shift forks are realized two groups of duplicate gears, then combines by controlling single shift fork with a plurality of monolevers, reaches the object of main shaft multi-stage speed.Above-mentioned two kinds of modes, when main shaft speed change, must be checked the position relationship of each handle and revolution counter, and operation is easy to make mistakes, and the quick speed change of main shaft is had a certain impact.

Summary of the invention

The object of this invention is to provide handle of a kind of use and just enough control eight grades of gears of one side curve disc that lathe gearbox is realized eight grades of speed changes.

For achieving the above object, the invention provides following technical scheme: eight grades of gears of a kind of one side curve disc, comprise that a curve disc is rotationally connected by the gear box of a Handle axis being coaxially fixedly connected with it and lathe, an end face of described curve disc is provided with curved groove, the casing of described gearbox is provided with three levers, the rotary middle spindle of described lever is parallel with the axis of Handle axis, one end of described lever is provided with sliding sleeve, the other end is provided with shifting block, described sliding sleeve is placed in curved groove and forms and be slidably matched with curved groove, described shifting block is connected with shift fork, shift fork is connected with duplicate gear.

Technique effect of the present invention is: on the basis of curve disc shifting fork mechanism in the past, designed a kind of new curved groove shape, thereby only this curved groove need be set on an end face of curve disc, just can make three shift forks by certain regular motion and be combined into the object that eight kinds of different stations are realized eight grades of speed governing, greatly having simplified the structure of eight grades of gearboxes in the past.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention;

Fig. 2 is the planar structure schematic diagram of curve disc in the present invention.

The specific embodiment

As shown in Figure 1, eight grades of gears of a kind of one side curve disc, comprise that a curve disc 10 is rotationally connected by a Handle axis being coaxially fixedly connected with it 11 and the gear box of lathe, an end face of described curve disc 10 is provided with curved groove 12, the casing of described gearbox is provided with three levers 20, the rotary middle spindle 21 of described lever 20 is parallel with the axis of Handle axis 11, one end of described lever 20 is provided with sliding roller 22, the other end is provided with shifting block 23, the axis of described sliding roller 22 is parallel with the axis of Handle axis 11, described sliding roller 22 is placed in curved groove 12 and coordinates with the spacing guiding of curved groove 12 formation, described shifting block 23 is connected with shift fork 33, described shift fork 33 is connected with duplicate gear 41.When operating personnel rotate curve disc 10, deflector roll 22 is in the interior slip of curved groove 12, when curved groove 12 force sliding roller 22 near or during away from the center of circle of curve disc 10, lever 20 will produce unsteady, thereby the shift fork 33 being now connected with shifting block 23 on lever 20 just can drive duplicate gear 41 to reach the object of speed governing.

As shown in Figure 2, the curve shape of described curved groove 12 is a closed-loop, described curved groove 12 comprises the first arc section 121 and the second arc section 122, the center of circle arranged concentric of the center of circle of the center of circle of described the first arc section 121 and the second arc section 122 and curve disc 10, the radius of described the first arc section 121 is less than the radius of the second arc section 122, the first arc section 121 and the second arc section 122 are along the circumferential interlaced arrangement of curve disc 10, between the first adjacent arc section 121 and the second arc section 122, seamlessly transit, described curved groove 12 is about a diameter symmetry setting of curve disc 10, line between the center of rotation of described three levers 20 is isosceles right triangle.The concrete shape of curved groove 12 of the present invention as shown in Figure 2, in the present invention, each lever 20 comprises two stations, be that the sliding roller 22 of lever 20 is while being positioned at the first arc section 121, lever 20 is in the first station, when the sliding roller 22 of lever 20 is positioned at the second arc section 122, lever 20 is in the second station, the design main points of the curved groove 12 in the present invention be reasonable distribution the first arc section 121 and the second arc section 122 length, when curve disc 10, rotate and within one week, can make three levers 20 be combined into eight kinds of different stations, these eight kinds of stations can make three duplicate gears 41 be combined into eight kinds of different position relationships, from but gearbox produces eight different gearratios.

As shown in Figure 1, described duplicate gear 41 coaxial sleeves are located on the splined shaft 40 arranging in lathe gearbox, and duplicate gear 41 forms and is slidably matched with flower countershaft 40, and described splined shaft 40 arranges perpendicular to Handle axis 11, described shifting block 23 be rotationally connected with lever 20 and rotation mandrel parallel with the axis of Handle axis 11, in described lathe gearbox, be provided with the shift fork guide post 31 parallel with splined shaft 40, on described shift fork guide post 31, be arranged with the sliding sleeve 30 that formation is slidably matched with it, described shift fork 33 is fixedly connected with sliding sleeve 30, described sliding sleeve 30 is provided with chute 32, the length of described chute 32 is put vertical to the axis direction with declutch shift shaft 31 and parallel with the card of curve disc 10, described shifting block 23 forms and is slidably matched with chute 32, described Handle axis 11 is connected with the handle arranging on gearbox outer wall.Operating personnel only need to regulate and just can make gearbox obtain eight different gearratios a handle, thereby make output shaft obtain eight kinds of different rotating speeds, this has simplified the drive mechanism of eight grades of gearboxes in the past greatly, makes operation more simple, convenient simultaneously.

Claims

1. eight grades of gears of an one side curve disc, it is characterized in that: comprise that a circular curve disc (10) is provided with a Handle axis being coaxially fixedly connected with it (11), described curve disc (10) is rotationally connected by Handle axis (11) and the gear box of lathe, an end face of described curve disc (10) is provided with curved groove (12), the casing of described gearbox is provided with three levers (20), the rotary middle spindle (21) of described lever (20) is parallel with the axis of Handle axis (11), one end of described lever (20) is provided with sliding roller (22), the other end is provided with shifting block (23), the axis of described sliding roller (22) is parallel with the axis of Handle axis (11), described sliding roller (22) is placed in and forms spacing guiding with curved groove (12) in curved groove (12) and coordinate, described shifting block (23) is connected with shift fork (33), described shift fork (33) is connected with duplicate gear.

2. eight grades of gears of one side curve disc according to claim 1, is characterized in that: the curve shape of described curved groove (12) is a closed-loop.

3. eight grades of gears of one side curve disc according to claim 2, it is characterized in that: described curved groove (12) comprises the first arc section (121) and the second arc section (122), the center of circle arranged concentric of the center of circle of the center of circle of described the first arc section (121) and the second arc section (122) and curve disc (10), the radius of described the first arc section (121) is less than the radius of the second arc section (122), the first arc section (121) and the second arc section (122) are along the circumferential interlaced arrangement of curve disc (10), between adjacent the first arc section (121) and the second arc section (122), seamlessly transit.

4. eight grades of gears of one side curve disc according to claim 3, is characterized in that: described curved groove (12) is about a diameter symmetry setting of curve disc (10).

5. eight grades of gears of one side curve disc according to claim 4, is characterized in that: the line between the center of rotation of described three levers (20) is isosceles right triangle.

6. eight grades of gears of one side curve disc according to claim 5, it is characterized in that: described duplicate gear (41) coaxial sleeve is located on the splined shaft (40) arranging in lathe gearbox, duplicate gear (41) forms and is slidably matched with flower countershaft (40), and described splined shaft (40) arranges perpendicular to Handle axis (11).

7. eight grades of gears of one side curve disc according to claim 6, it is characterized in that: described shifting block (23) be rotationally connected with lever (20) and rotation mandrel parallel with the axis of Handle axis (11), in described lathe gearbox, be provided with the shift fork guide post (31) parallel with splined shaft (40), on described shift fork guide post (31), be arranged with the sliding sleeve (30) that formation is slidably matched with it, described shift fork (33) is fixedly installed on sliding sleeve (30), described sliding sleeve (30) is provided with chute (32), the length direction of described chute (32) is vertical and parallel with the card of curve disc (10) with the axis direction of shift fork guide post (31), described shifting block (23) forms and is slidably matched with chute (32).

8. eight grades of gears of one side curve disc according to claim 7, is characterized in that: described Handle axis (11) is connected with the handle that gearbox outer wall place arranges.