CN202517329U

CN202517329U - Pneumatic index plate

Info

Publication number: CN202517329U
Application number: CN2012201673787U
Authority: CN
Inventors: 欧道高
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-04-18
Filing date: 2012-04-18
Publication date: 2012-11-07
Anticipated expiration: 2022-04-18

Abstract

The utility model discloses a pneumatic index plate, which comprises a base, an upper cover arranged on the upper part of the base, a rotating shaft arranged in the base, a gear, a rocker and a ratchet wheel which are arranged between the base and the upper cover and are sequentially sleeved on the rotating shaft, and an anti-retraction device, wherein the upper end of the rotating shaft extends out of the top of the upper cover and is connected with a turntable; a positioning claw for positioning the ratchet wheel is arranged on the rocker; a positioning block for positioning the positioning claw is arranged on the base; a driving device in transmission connection with the gear is arranged on the base; a buffer device for buffering the turntable is arranged between the base and the upper cover; and the anti-retraction device is used for preventing the ratchet wheel from rotating backwards. The positioning accuracy of the pneumatic index plate can be effectively improved, and the service life of the pneumatic index plate can be prolonged.

Description

Pneumatic index dial

Technical field

The utility model relate to a kind of rectilinear motion with cylinder convert into workbench the regulation the number of divisions in do intermittent movement; Be the every reciprocating motion of cylinder once; Workbench rotates an angle, stops then, changes an angle again according to the instruction of the system of control after waiting for a station completion of processing; Like this do action, and can customize the pneumatic turntable of required station number according to the number of divisions.

Background technology

Generally in machining equipment, need to make equal portions processing, accomplish through index dial, yet present employed index dial structure is very complicated, the parts of cooperation are many.Assembled after one; Bulky; Cause also becoming cumbersome a lot of relatively, make operating personnel feel very inconvenience in the use, and the working time has been increased much for such structure in installation; Especially on the procedure operation step, so that the potential problem that falls behind usually takes place in the whole machining process progress.Simultaneously, traditional index dial, positioning accuracy is low, impact big, and shortcoming such as working life is low.

The utility model content

The purpose of the utility model is to overcome above-mentioned defective in the prior art: a kind of pneumatic index dial that can effectively improve positioning accuracy and service life is provided.

For realizing above-mentioned purpose, the technical scheme that the utility model provides is following: a kind of pneumatic index dial is provided, comprises base; Be installed in the loam cake on base top; Be installed in the rotating shaft in the base, also comprise being installed between base and the loam cake also being enclosed within gear, rocking bar and the ratchet in the rotating shaft successively, the upper end of rotating shaft is stretched out with rotating disk from last tops and is connected; Be equiped with the locating detent that ratchet is positioned on the rocking bar; Be equiped with on the base and be used for locating piece that locating detent is positioned, be equiped with the drive unit that is connected with gear drive on the base, also be equiped with between base and the loam cake and be used for buffer unit that rotating disk is cushioned.

Also comprise and be used to prevent the rotating backward anti-rollback device of ratchet.

The beneficial effect of the said pneumatic index dial of the utility model is: because the buffering ratchet directly acts on load; Play the effect of forcing load-retarding; The impact of rotator inertia when greatly having reduced owing to dial rotation; And load receives the effect of buffering claw assembly, and load can not drive ratchet and surmount ratchet to preshoot, stopped the situation generation of being forbidden the location.Adding load has the buffering pawl, buffing pad, and push rod, the effect of buffer has reduced the impact of locating rest shoe and locating piece, has improved the working life of ratchet widely.Since use buffering group and part buffering pawl, buffing pad, and the device of push rod and oil buffer has also improved the precision of the work of index dial simultaneously.

Below in conjunction with accompanying drawing and embodiment the described pneumatic index dial of the utility model is described further:

Description of drawings

Fig. 1 is the three-dimensional structure diagram of the said pneumatic turntable installing of the utility model rotating disk;

Fig. 2 is the decomposition chart of Fig. 1;

Fig. 3 is the three-dimensional structure diagram that the said pneumatic turntable of the utility model is not installed loam cake and rotating disk;

Fig. 4 is the vertical view of Fig. 3.

The specific embodiment

Below be the most preferred embodiment of the said pneumatic turntable of the utility model, therefore do not limit the protection domain of the utility model.

With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, a kind of pneumatic index dial is provided, comprise base 1; Be installed in the loam cake 2 on base 1 top, be installed in the rotating shaft 3 in the base 1, also comprise being installed in also being enclosed within gear 4, rocking bar 5 and the ratchet 6 in the rotating shaft 3 between base 1 and the loam cake 2 successively; The upper end of rotating shaft 3 is stretched out with rotating disk 7 from loam cake 2 tops and is connected, and is equiped with the locating detent 8 that ratchet 6 is positioned on the rocking bar 5, is equiped with on the base 1 to be used for locating piece 11 that locating detent 8 is positioned; When ratchet 6 arrived indexing position, the cusp of buffering pawl 20 arrived the summit of buffering ratchet 17 convexities, at this moment; The preceding left surface of locating detent 8 is run on the locating piece 11; Under the effect of locating piece 11, the hypotenuse of locating piece 11 compresses locating detent 8, and locking positioning pawl 8 positions.

Be equiped with the drive unit 12 that is in transmission connection with gear 4 on the base 1, also be equiped with between base 1 and the loam cake 2 and be used for buffer unit 13 that rotating disk 7 is cushioned.

Said drive unit 12 comprises the driving cylinder 14 that is installed on base 1 outer wall, is installed in the carriage saddle 15 in the base 1, and carriage saddle 15 tops offer chute; Be equiped with a slide unit 16 in this chute; One end of slide unit 16 is fixedly connected with the output shaft that drives cylinder 14, and this slide unit 16 is a spline-simulating, and said slide unit 16 is meshed with gear 4; Drive cylinder 14 and promote slide unit 16,3 rotate around the shaft from making gear 4.

Said buffer unit 13 is to cushion ratchet 17 by being set in going up of rotating shaft 3; Be installed in the buffer 18 on the base 1 and be installed in the buffing pad 19 in the base 1, be installed in buffering pawl 20 and push rod 21 on the buffing pad 19, constitute; Said buffering pawl 20 1 ends are fixed on the buffing pad 18; Said buffing pad 19 is provided with and push rod 21 matched through holes, push rod 21 1 ends pass this through hole and with the buffering pawl 20 the back camber line lean on tightly mutually, push rod 21 other ends and buffer 18 tightly against.。During the position, the bossing of buffering ratchet 17 is run on the buffering pawl 20 when ratchet 6 soon reaches calibration, the front end of push rod 21 with cushion pawl 20 and lean on mutually; Push rod 21 will slide backward when buffering pawl 20 rotates, and the rear end of push rod 21 receives the effect of buffer 18, force rotating disk 7 and load-retarding; Steadily stop when making rotating disk 7 arrive station; Reduced impact, can prevent that rotating disk 7 from turning over station, causes the generation of mechanical disorder simultaneously.

Also comprise being used to prevent the rotating backward anti-rollback device 22 of ratchet 6, this anti-rollback device 22 is by the anti-back pawl seat 23 that is installed in the base 1, and the anti-back pawl 24 that is installed on the anti-back pawl seat 23 constitutes, and under the effect of anti-back pawl 24, ratchet 6 can not turn round backward.

The foregoing description is the utility model preferred implementation; But the embodiment of the utility model is not restricted to the described embodiments; Other any do not deviate from change, the modification done under spirit and the principle of the utility model, substitutes, combination, simplify; All should be the substitute mode of equivalence, be included within the protection domain of the utility model.

Claims

1. pneumatic index dial; Comprise base (1); Be installed in the loam cake (2) on base (1) top, be installed in the rotating shaft (3) in the base (1), it is characterized in that; Also comprise being installed in and also be enclosed within gear (4), rocking bar (5) and the ratchet (6) in the rotating shaft (3) between base (1) and the loam cake (2) successively; The upper end of rotating shaft (3) is stretched out with rotating disk (7) from loam cake (2) top and is connected, and is equiped with the locating detent (8) that ratchet (6) is positioned on the rocking bar (5), is equiped with on the base (1) to be used for locating piece (11) that locating detent (8) is positioned; Be equiped with the drive unit (12) that is in transmission connection with gear (4) on the base (1), also be equiped with between base (1) and the loam cake (2) and be used for buffer unit (13) that rotating disk (7) is cushioned.

2. according to the said pneumatic index dial of claim 1, it is characterized in that said drive unit (12) comprises the driving cylinder (14) that is installed on base (1) outer wall; Be installed in the carriage saddle (15) in the base (1); Carriage saddle (15) top offers chute, is equiped with a slide unit (16) in this chute, and an end of slide unit (16) is fixedly connected with the output shaft that drives cylinder (14); This slide unit (16) is a spline-simulating, and said slide unit (16) is meshed with gear (4).

3. according to the said pneumatic index dial of claim 1; It is characterized in that; Said buffer unit (13) is to cushion ratchet (17) by being set in going up of rotating shaft (3), is installed in the buffer (18) on the base (1) and is installed in the buffing pad (19) in the base (1), and the buffering pawl (20) and the push rod (21) that are installed on the buffing pad (19) constitute; Said buffering pawl (20) one ends are fixed on the buffing pad (19); Said buffing pad (19) is provided with and the matched through hole of push rod (21), and push rod (21) one ends pass this through hole and lean on tightly mutually with the back camber line of buffering pawl (20), and the other end of push rod (21) tightly contacts with buffer (18).

4. according to the said pneumatic index dial of claim 1; It is characterized in that; Also comprise being used to prevent the rotating backward anti-rollback device of ratchet (6) (22), this anti-rollback device (22) is by the anti-back pawl seat (23) that is installed in the base (1), and the anti-back pawl (24) that is installed on the anti-back pawl seat (23) constitutes.