CN201076923Y

CN201076923Y - Highly effective pneumatic chuck

Info

Publication number: CN201076923Y
Application number: CNU2007200408904U
Authority: CN
Inventors: 顾学华
Original assignee: Mou Yanfeng
Current assignee: Changzhou Beut Machinery Manufacture Co., Ltd.
Priority date: 2007-07-18
Filing date: 2007-07-18
Publication date: 2008-06-25
Anticipated expiration: 2017-07-18

Abstract

The utility model discloses a pneumatic chuck, comprising a casing, a piston and a dynamic wedge equipped with a clamping jaw. The utility model is characterized in that, the dynamic wedge is slide fitted with the front cover of the casing; the piston is arranged in the casing; a fist chamber is formed between the rear part of the piston and the casing; a second chamber is formed between the front part of the piston and the front cover of the casing; the piston is fixedly connected with a guide rod; the guide rod extends out from the casing and slide-fitted with the hole of the casing; the guide rod is equipped with a fist air passage and a second air passage; the first air passage leads to the first chamber, and the second air passage leads to the second chamber; a convex wedge is arranged on the piston; a flume slide fitted with the convex wedge is arranged on the dynamic wedge. The utility model has the advantages of unnecessary adjustment of a setting pin, convenient use, fast clamping speed, high efficiency, high precision, accurate centering, uneasy self locking and lock braking of the piston, chuck clamping and large loosening force.

Description

The efficient aerodynamic chuck

Technical field

The utility model relates to a kind of lathe air spider.

Background technology

Existing air spider, complex structure, assembly difficulty is bigger, generally all wants the professional person just can install, because installation workload is big, operating efficiency will obviously descend, the cost height.For example China Patent No. is 200520041279.4, the document that is used for the clamping centralized positioning system of air spider by name discloses a kind of similar air spider structure, in this structure, the piston motion drives the chuck wedge-shaped sleeve and moves axially, the chuck wedge-shaped sleeve is slidingly matched by the wedge-shaped part of itself and the wedge-shaped slot of claw, so that claw along the chuck radial motion, tightens or unclamps workpiece.Owing to do not fixedly connected between piston and the chuck wedge-shaped sleeve, moving of chuck wedge-shaped sleeve easily produces radial deflection, therefore in order to guarantee positioning accuracy, be provided with the alignment pin that cooperates with chuck wedge-shaped sleeve and chuck body, so complex structure, manufacture difficulty is big, is difficult to install, and need regulate alignment pin every now and then when using, make troubles to use.And the application number of application is No. 200720033188.5 patents before the applicant, owing to have skewed slot on the piston, have the oblique protuberance that is slidingly matched with skewed slot on the power voussoir, cause the anti-push cylinder chamber area of piston to increase, it is little to cause chuck to unclamp power, is easy to generate the self-locking locking phenomenon.

Summary of the invention

The purpose of this utility model is to provide a kind of self-locking locking that is difficult for, clamp and the power of unclamping big, simple in structure, be convenient to make, install, and efficient aerodynamic chuck easy to use.

In order to achieve the above object, the technical solution of the utility model is: a kind of air spider, comprise shell, the power voussoir of piston and band claw, the protecgulum of power voussoir and shell is slidingly matched, piston is cased, form first chamber between piston rear portion and the shell, form second chamber between the protecgulum of piston front portion and shell, piston is fixedlyed connected with guide rod, and guide rod stretches out outside the shell, and cooperate with the hole slipper seal of shell, guide rod has first air flue and second air flue, and first air flue leads to first chamber, and second air flue leads to second chamber, have protruding wedge on the piston, have the skewed slot that is slidingly matched with protruding wedge on the power voussoir.

After adopting said structure, have protruding wedge on the piston, have the skewed slot that is slidingly matched with protruding wedge on the power voussoir, like this, the just direct transfer motion power voussoir of piston has been cancelled parts such as chuck wedge-shaped sleeve of the prior art and alignment pin, therefore simple in structure, be convenient to make, install; In use, need not to regulate alignment pin, easy to use, clamping speed is fast, and the efficient height also has the precision height, and centering is accurate, and piston is not easy the self-locking locking, and chuck clamps and the big characteristics of the power of unclamping.

Description of drawings

Fig. 1 is the Facad structure schematic diagram of a kind of efficient aerodynamic chuck of the present utility model;

Fig. 2 is the side view of Fig. 1;

Fig. 3 is the cutaway view of Fig. 1 along the A-A line, also is the state diagram of claw when moving outward;

Fig. 4 is the state diagram when moving in the claw;

Fig. 5 is the Facad structure schematic diagram of the protecgulum in the utility model efficient aerodynamic chuck;

Fig. 6 is that the C of Fig. 5 is to view;

Fig. 7 is the structural representation of the power voussoir in the utility model efficient aerodynamic chuck;

Fig. 8 is the cutaway view of Fig. 7 along the B-B line;

Fig. 9 is the left view of Fig. 7;

Figure 10 is the front view of the nut in the utility model;

Figure 11 is the vertical view of Figure 10;

Figure 12 is the structure of piston schematic diagram in the utility model efficient aerodynamic chuck;

Figure 13 is the cutaway view of Figure 12 along the D-D line.

The specific embodiment

The embodiment that provides below in conjunction with accompanying drawing is described in further detail the utility model.

As Fig. 1,2,3, shown in 4, a kind of air spider of the present utility model, comprise shell 2, the power voussoir 4 of piston 3 and band claw 6, power voussoir 4 is slidingly matched with the protecgulum 8 of shell 2, piston 3 is contained in the shell 2, form first chamber 14 between piston 3 rear portions and the shell 2, form second chamber 15 between the protecgulum 8 of piston 3 front portions and shell 2, piston 3 is fixedlyed connected with guide rod 12, guide rod 12 stretches out outside the shell 2, and cooperate with the hole 2-1 slipper seal of shell 2, guide rod 12 has the first air flue 12-1 and the second air flue 12-2, and the first air flue 12-1 leads to first chamber, 14, the second air flue 12-2 and leads to second chamber 15, have protruding wedge 3-1 on the piston 3, have the skewed slot 4-1 that is slidingly matched with protruding wedge 3-1 on the power voussoir 4.

Shown in Fig. 1,3,4, protecgulum 8 is fixedlyed connected with the cylindrical shell of shell 2 by trip bolt 9.Certainly, shell 2 cylindrical shells and protecgulum 8 also can be made one.

Shown in Fig. 3,4,5,6,7,8,9, protecgulum 8 is provided with radially T type chute 8-1 and interior heavy shape chamber 8-3, and the both sides of power voussoir 4 have the sliding protruding wing 4-2 that joins with T type chute 8-1.Skewed slot 4-1 on the power voussoir 4 drives on the protruding wing 4-2 in both sides.

Shown in Fig. 3,4,8,10,11, power voussoir 4 is provided with T type groove 4-3, and nut 5 has the sliding protruding wing 5-1 that joins with T type groove 4-3, and claw 6 is fixedlyed connected with power voussoir 4 by screw 7 and nut 5.Power voussoir 4 also can be made as one with claw 6.

Shown in Figure 12,13,6, to move with one heart in order to make piston 3, piston 3 front portions have counterbore 3-2, have sliding sleeve 8-2 on the protecgulum 8, and sliding sleeve 8-2 cooperates with counterbore 3-2 slipper seal.

Shown in Fig. 3,4, sealing ring 10 is housed on the sliding sleeve 8-2.

Shown in Fig. 3,4,7,9,12,13, have 6 protruding wedge 3-1 on the piston 3 and constitute 3 pairs, every couple of protruding wedge 3-1 is all parallel to each other, and the 3 couples of protruding wedge 3-1 can be respectively be slidingly fitted with the skewed slot 4-1 of 3 power voussoir 4 both sides.The protruding wedge 3-1 of piston 3 can be 2～8 pairs, and the quantity of power voussoir 4 can be corresponding 2～8.

Shown in Fig. 3,4,12,13, piston 3 has screwed hole 3-3, and guide rod 12 is fixedlyed connected with piston 3 by screwed hole 3-3, has step 12-3 on the guide rod 12, is provided with planar seal ring 11 between step 12-3 and the piston 3.

Shown in Fig. 3,4, in the hole 2-1 of shell 2 sealing ring 13 is housed.Sealing ring 1 is housed on the piston 3.

Shown in Fig. 3,4, when the utility model uses, when the first air flue 12-1 of guide rod 12 is in the air inlet state, gas enters first chamber 14, promoting piston 3 moves right, make the skewed slot 4-1 of the protruding wedge 3-1 propulsion power voussoir 4 of piston 3, power voussoir 4 is moved to chuck hub, thus clamping work pieces; When the second air flue 12-2 of guide rod 12 was in the air inlet state, gas entered second chamber 15, promoted piston 3 to left movement, made the skewed slot 4-1 of the protruding wedge 3-1 propulsion power voussoir 4 of piston 3, made power voussoir 4 peripheral mobile to chuck, thereby unclamped workpiece fast.

Claims

1. air spider, comprise shell (2), the power voussoir (4) of piston (3) and band claw (6), power voussoir (4) is slidingly matched with the protecgulum (8) of shell (2), piston (3) is contained in the shell (2), form first chamber (14) between piston (3) rear portion and the shell (2), form second chamber (15) between the protecgulum (8) of piston (3) front portion and shell (2), piston (3) is fixedlyed connected with guide rod (12), guide rod (12) stretches out outside the shell (2), and cooperate with hole (2-1) slipper seal of shell (2), guide rod (12) has first air flue (12-1) and second air flue (12-2), first air flue (12-1) leads to first chamber (14), second air flue (12-2) leads to second chamber (15), it is characterized in that: have protruding wedge (3-1) on the piston (3), have the skewed slot (4-1) that is slidingly matched with protruding wedge (3-1) on the power voussoir (4).

2. air spider according to claim 1 is characterized in that: protecgulum (8) is fixedlyed connected with the cylindrical shell of shell (2) by trip bolt (9).

3. air spider according to claim 1 is characterized in that: protecgulum (8) is provided with radially T type chute (8-1) and interior heavy shape chamber (8-3), and the both sides of power voussoir (4) have and the sliding protruding wing (4-2) of joining of T type chute (8-1).

4. air spider according to claim 1, it is characterized in that: power voussoir (4) is provided with T type groove (4-3), nut (5) has and the sliding protruding wing (5-1) of joining of T type groove (4-3), and claw (6) is fixedlyed connected with power voussoir (4) by screw (7) and nut (5).

5. air spider according to claim 1 is characterized in that: piston (3) front portion has counterbore (3-2), has sliding sleeve (8-2) on the protecgulum (8), and sliding sleeve (8-2) cooperates with counterbore (3-2) slipper seal.

6. air spider according to claim 5 is characterized in that: sealing ring (10) is housed on the sliding sleeve (8-2).

7. air spider according to claim 3, it is characterized in that: the skewed slot (4-1) on the power voussoir (4) is driveed on the protruding wings in both sides (4-2), have 6 protruding wedges (3-1) on the piston (3) and constitute 3 pairs, every pair of protruding wedge (3-1) is all parallel to each other, and 3 pairs of protruding wedges (3-1) can be respectively be slidingly fitted with the skewed slot (4-1) of 3 power voussoirs (4) both sides.

8. air spider according to claim 1, it is characterized in that: piston (3) has screwed hole (3-3), guide rod (12) is fixedlyed connected with piston (3) by screwed hole (3-3), have step (12-3) on the guide rod (12), be provided with planar seal ring (11) between step (12-3) and the piston (3).

9. air spider according to claim 1 is characterized in that: in the hole (2-1) of shell (2) sealing ring (13) is housed.