CN201183127Y

CN201183127Y - Pneumatic clamp device

Info

Publication number: CN201183127Y
Application number: CNU2008200839312U
Authority: CN
Inventors: 张文联
Original assignee: NINGBO QIUAI SIBIDA BEARING PLANT
Current assignee: NINGBO QIUAI SIBIDA BEARING PLANT
Priority date: 2008-03-07
Filing date: 2008-03-07
Publication date: 2009-01-21
Anticipated expiration: 2018-03-07

Abstract

The utility model discloses a pneumatic clamping device which comprises an ultrathin cylinder that consists of a cylinder barrel (1), a cylinder piston (2) and a cylinder end cover (3); a gas-type fitting that is used for connecting a windpipe is arranged on the cylinder barrel (1); a collet sliding component that can cause an elastic collet (9) to slide in a collet holder (10) and can be rotatablely matched with the elastic collet (9) is connected on the cylinder piston (2); the lower end of the collet holder (10) is connected at the top part of the cylinder barrel (1), and an end cover (12) is arranged at the top end of the collet holder (10); a through hole I (13) that can ensure the elastic collet (9) to pass through is arranged on the end cover (12); the lower end of the elastic collet (9) is connected with a rotating shaft (14); the rotating shaft (14) is matched with the ultrathin cylinder in a sliding and rotatable way. The pneumatic clamping device has the advantages that the pneumatic clamping device can be used without processing a gas channel on a mainshaft of a machine tool, the processing and the assembly are simple and flexible, the using range is wide, and the rotation and knotting phenomenon with the connected windpipe can not appear.

Description

Air clamper

Technical field:

The utility model relates to a kind of clamping device, specifically is a kind of air clamper that is used for machining.

Background technology:

Disclose the application for a patent for invention that a kind of name is called a kind of air clamper on the China national intellectual property board web, it comprises holder, collet body, collet and gland; Described holder is fixed on the machine tool chief axis by screw; Described collet body is installed on the holder by screw; Described collet is fixedly mounted on the collet body by screw; Described gland is fixedly mounted on the collet body by screw, and described collet body, collet and gland surround the cylinder of a sealing jointly, in the described cylinder piston is installed.Foregoing invention is in when work, and gas is to enter into and promote piston in the cylinder and move by being arranged on gas passage on the machine tool chief axis, realizes unclamping or clamping action workpiece thereby make collet be in the spreading state or be in physical slot.

There are following three weak points in actual applications in foregoing invention: 1, on machine tool chief axis the processing gas passage not only difficulty is bigger, and because the air inlet of cylinder must be aimed at sealing with gas passage, therefore this assembling of inventing is more loaded down with trivial details; 2, could use owing to foregoing invention must be installed in the machine tool chief axis that is provided with gas passage, so its scope of application is narrow; 3, because machine tool chief axis the time generally will rotate in work, the tracheae rotation that is communicated with gas passage is tied a knot and influence the normal use of foregoing invention when rotating through the many or anglec of rotation.

The utility model content:

The technical problems to be solved in the utility model is, provides a kind of and need not that the processing gas passage just can uses and processes, assembles simple and flexible on machine tool chief axis, and the scope of application is big, can not make connected tracheae rotate the air clamper of tiing a knot.

Technical solution of the present utility model is, a kind of qigong clamping device with following structure is provided, and it comprises the ultrathin cylinder of being made up of cylinder barrel, cylinder piston and cylinder end piece; Described cylinder barrel is provided with the gas-tpe fitting that is used to connect tracheae; Be connected with on the described cylinder piston collet is slided in base of the carrier head and with the rotatable chuck slide assemblies that cooperates of collet; Described base of the carrier head lower end is connected the top of cylinder barrel, and the top of described base of the carrier head is provided with end cap; Have the through hole I that passes for the elasticity chuck on the described end cap; The lower end of described collet is connected with rotating shaft; Described rotating shaft is slided with ultrathin cylinder and rotatable the cooperation.

After adopting above structure, the utlity model has following advantage:

1, since the utility model utilization be ultrathin cylinder conventional in the prior art, tracheae can directly be connected on the gas-tpe fitting, it need not reprocess gas passage in addition on other parts as on machine tool chief axis, therefore the utility model not only difficulty of processing descend greatly, and also become simply at fit on, flexible;

2, owing to the required gas of cylinder in the utility model is to be delivered directly in the cylinder barrel by external tracheae, it can be installed on any one equipment or the machine part by axle, and therefore the scope of application of the present utility model is wider;

3, owing to be connected with on the cylinder piston described in the utility model and collet is slided in base of the carrier head and turn the chuck slide assemblies cooperate with collet, and described rotating shaft can drive the relative chuck slide assemblies rotation of collet, thereby make base of the carrier head, end cap and the ultrathin cylinder can be along with collet rotates together, therefore the utility model can not make the tracheae rotation knotting that is connected with gas-tpe fitting when being rotated work, thereby has guaranteed operate as normal of the present utility model.

Description of drawings:

Fig. 1 is the structural representation of the utility model air clamper.

Fig. 2 is the sectional structure schematic diagram of the utility model air clamper.

Fig. 3 is the plan structure schematic diagram of collet in the utility model.

Fig. 4 is the sectional structure schematic diagram along " A-A " line among Fig. 3.

Gas circuit layout drawing when Fig. 5 steps up device and is connected with tracheae and reversal valve for the utility model is pneumatic.

Shown in the figure: 1, cylinder barrel, 2, cylinder piston, 3, cylinder end piece, 4, push rod, 5, shaft coupling, 6, bearing block, 7, taper roll bearing I, 8, the chuck cover, 9, collet, 10, base of the carrier head, 11, thrust ball bearing, 12, end cap, 13, through hole I, 14, rotating shaft, 15, taper roll bearing II, 16, splined hole, 17, through hole I II, 181,182, gas-tpe fitting, 19, reversal valve, 201,202, tracheae, 21, air inlet pipe.

Specific embodiment:

The utility model is described in further detail below in conjunction with the drawings and specific embodiments:

As depicted in figs. 1 and 2, in the utility model air clamper by a ultrathin cylinder of forming by cylinder barrel 1, cylinder piston 2 and cylinder end piece 3; Described cylinder barrel 1 is provided with the gas-tpe fitting 181,182 that is used to connect tracheae 201,202; Be connected with on the described cylinder piston 2 collet 9 is slided in base of the carrier head 10 and with the rotatable chuck slide assemblies that cooperate of collet 9; Described base of the carrier head 10 lower ends are connected the top of cylinder barrel 1 by screw, and the top of described base of the carrier head 10 is connected with end cap 12 by screw; Have the through hole I 13 that passes for elasticity chuck 9 on the described end cap 12; As shown in Figure 3 and Figure 4, described collet 9 lower ends are provided with the splined hole 16 that is used to connect rotating shaft 14, and described rotating shaft 14 is a splined shaft, and the lower end of described collet 9 is connected with the upper end of splined shaft with rotating shaft 14 by splined hole 16; Have a through hole I II 17 who supplies rotating shaft 14 to pass in the middle of the described ultrathin cylinder, the internal diameter of described through hole II 17 is greater than the external diameter of rotating shaft 14, so the rotating shaft in the utility model 14 is to slide and rotatable the cooperation with ultrathin cylinder.

In this specific embodiment, be connected with on the described cylinder piston 2 and collet 9 is slided in base of the carrier head 10 and comprise that with the rotatable chuck slide assemblies that cooperate of collet 9 push rod 4, shaft coupling 5, bearing block 6, thrust ball bearing 11, taper roll bearing I 7, chuck overlap 8 and taper roll bearing II 15; One end of described push rod 4 and cylinder piston 2 welding, its other end is connected with an end of shaft coupling 5; Described push rod 4 cooperates with the top slide of cylinder barrel 1, and in other words, push rod 4 can slide up and down at the top of cylinder barrel 1 under the effect of tracheae piston 2; The other end of described shaft coupling 5 is connected with an end of bearing block 6; The other end of described bearing block 6 is that interference fit is connected with the outer ring of taper roll bearing I 7; Described bearing block 6 is slidingly matched with base of the carrier head 10 inwalls and bearing block 6 can slide up and down by the inwall along base of the carrier head 10 in base of the carrier head 10; The inner ring of described taper roll bearing I 7 is that interference fit is connected with the outer wall of chuck cover 8; The inwall of described chuck cover 8 and collet 9 are for being threaded; Described chuck overlaps 8 bottoms and closely contacts with the upper surface of thrust ball bearing 11, and the lower surface of described thrust ball bearing 11 closely contacts with the top of push rod 4, and the cylindrical of described thrust ball bearing 11 is connected with the cylindrical interference fit of shaft coupling 5; The inclination inner ring of described taper roll bearing II 15 is connected with the inclined plane interference fit at collet 9 middle parts; The outer ring of described taper roll bearing II 15 is connected with the inwall interference fit of base of the carrier head 10.In order to realize being connected with the inclined plane interference fit at collet 9 middle parts, the inner ring of the taper roll bearing II 15 in the present embodiment is ground to the inner cone shape.

The utility model both can be installed in by rotating shaft 14 and can not be rotated on equipment or the machine part, also can be installed in motor rotary shaft, on the revolvable axle such as machine tool chief axis, its operation principle is: as shown in Figure 5, when the reversal valve 19 that connects air inlet pipe 21 is opened tracheae 202, gas will enter in the cylinder barrel 1 of cylinder piston 2 belows by tracheae 202 and gas-tpe fitting 182, effect at thrust gas, cylinder piston 2 drives push rod 4 and upwards slides, be in the spreading state outward thereby make collet 9 stretch out end cap 12, so that the workman puts into workpiece on the collet 9; When reversal valve 19 is opened tracheae 201, gas will enter in the cylinder barrel 1 of cylinder piston 2 tops by tracheae 201 and gas-tpe fitting 181, effect at thrust gas, cylinder piston 2 drives push rod 4 to lower slider, thereby collet 9 is retracted in the end cap 12 and be in clamped condition, workpiece firmly is clamped on the collet 9.When being used for the equipment of connecting axle 14 or machine part such as machine tool chief axis when rotating, machine tool chief axis will drive axle 14 and rotate, and drives collet 9 simultaneously and workpiece rotates together, thereby finishes specific rotation processing request.

Claims

1, a kind of air clamper comprises the ultrathin cylinder of being made up of cylinder barrel (1), cylinder piston (2) and cylinder end piece (3); Described cylinder barrel (1) is provided with the gas-tpe fitting (181,182) that is used to connect tracheae (201,202), it is characterized in that: be connected with on the described cylinder piston (2) collet (9) is slided in base of the carrier head (10) and with the rotatable chuck slide assemblies that cooperates of collet (9); Described base of the carrier head (10) lower end is connected the top of cylinder barrel (1), and the top of described base of the carrier head (10) is provided with end cap (12); Have the through hole I (13) that passes for elasticity chuck (9) on the described end cap (12); The lower end of described collet (9) is connected with rotating shaft (14); Described rotating shaft (14) is slided with ultrathin cylinder and rotatable the cooperation.

2, air clamper according to claim 1 is characterized in that: be connected with on the described cylinder piston (2) and collet (9) is slided in base of the carrier head (10) and comprise push rod (4), shaft coupling (5), bearing block (6), thrust ball bearing (11), taper roll bearing I (7), chuck cover (8) and taper roll bearing II (15) with the rotatable chuck slide assemblies that cooperates of collet (9); Described push rod (4) cooperates with the top slide of cylinder barrel (1); One end of described push rod (4) is connected with cylinder piston (2), and its other end is connected with an end of shaft coupling (5); The other end of described shaft coupling (5) is connected with an end of bearing block (6); The other end of described bearing block (6) is connected with the outer ring of taper roll bearing I (7); Described bearing block (6) is slidingly matched with base of the carrier head (10) inwall; The inner ring of described taper roll bearing I (7) is connected with the outer wall of chuck cover (8); The inwall of described chuck cover (8) is connected with collet (9); Described chuck cover (8) bottom closely contacts with the upper surface of thrust ball bearing (11), and the lower surface of described thrust ball bearing (11) closely contacts with the top of push rod (4), and the cylindrical of described thrust ball bearing (11) is connected with the cylindrical of shaft coupling (5); The inclination inner ring of described taper roll bearing II (15) is connected with the inclined plane at collet (9) middle part; The outer ring of described taper roll bearing II (15) is connected with the inwall of base of the carrier head (10).

3, air clamper according to claim 1 is characterized in that: the lower end of described collet (9) is connected with rotating shaft (14) and refers to, described rotating shaft (14) is a splined shaft; Described collet (9) lower end is provided with the splined hole (16) that is used to connect rotating shaft (14).