CN201124243Y

CN201124243Y - Clamping device of automatic and common lathe with elastic collet

Info

Publication number: CN201124243Y
Application number: CNU2008200820636U
Authority: CN
Inventors: 岑国生
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-01-10
Filing date: 2008-01-10
Publication date: 2008-10-01
Anticipated expiration: 2018-01-10

Abstract

The utility model relates to a clamping device using elastic chucks for automatic and common lathes and comprises a headstock, a spindle, a push-pull shaft penetrating through the spindle, and an elastic chuck connected with the push-pull shaft, wherein the push-pull shaft is driven by a drive device through a linkage mechanism to move back and forth along an axial direction so as to clamp or loosen the elastic chuck; the linkage mechanism includes a striking device for driving the push-pull shaft to move along the axial direction through swing, and a sliding device for driving the striking device through back-to-forth movement along the axial direction; and the sliding device is connected with the drive device. Compared with the prior art, the clamping device has the advantages that: (1) the clamping chuck can be clamped or loosened by driving a rocker to swing by the sliding device which is driven by the drive device, so that the clamping or loosening operation of the clamp chuck can be achieved instantaneously to greatly improve the processing efficiency and achieve simple structure, large clamping force, low requirement for tolerance of the clamped section and stable operation; and (2) the spindle is free of axial tensile force when the push-pull shaft moves back and forth, so that the bearing is unlikely to be worn and the service life is prolonged.

Description

Use the clamping device that reaches engine lathe automatically of collet

Technical field

The utility model belongs to a kind of clamping device of workpiece, specifically belongs to automatic lathe or engine lathe collet and clamps the clamping device that processing parts is used.

Background technology

When using the machined into part of collet, generally clamp part with collet, its transmission system is by belt pulley or gear driven main shaft, main shaft drives chuck and rotates at a high speed, by the knife rest clamp-on tool, part is carried out turning, at present existing automatic lathe or engine lathe clamping device complex structure, volume are bigger, its main shaft axially loaded, bearing is easy to wear, and to the tolerance height at product clamping position, part clamps, the action of releasing instability, and clamping force is little, and working (machining) efficiency is not high.

Summary of the invention

Technical problem to be solved in the utility model is: the clamping device that a kind of compact conformation, lathe collet that working (machining) efficiency is high are provided.

In order to solve the problems of the technologies described above, the utility model adopts following technical scheme:

A kind of clamping device that reaches engine lathe automatically that uses collet, comprise main spindle box, main shaft, run through the push-pull shaft of main shaft, the collet that links to each other with push-pull shaft, push-pull shaft is driven to move forward and backward vertically by power set by interlinked mechanism and collet is clamped or unclamps, it is characterized in that: described interlinked mechanism have by swing make striking gear that push-pull shaft moves vertically, by moving forward and backward the carriage that drives striking gear vertically, carriage links to each other with power set.

In order to solve the problems of the technologies described above, the utility model adopts following further technical scheme:

Described striking gear comprises hinged rocking arm on stressed axle sleeve, mini-roundabout, end cap and the mini-roundabout that is set on the push-pull shaft, mini-roundabout and end cap are fixed, end cap and push-pull shaft are fixed, and the rocking arm front end holds out against stressed axle sleeve, and stressed axle sleeve is held out against by the locking cap that links to each other with main shaft.

Described carriage comprises the fixed cover that links to each other with main spindle box, is set in the outer sliding sleeve of fixed cover, by bearing traffic cycle is installed on the sliding sleeve, and traffic cycle links to each other with the rocking arm upper end and drives rocking arm and swing, and sliding sleeve links to each other with power set by thrust plate.

Described power set are air cylinder device.

Described power set are hydraulic cylinder device.

The utility model compared with prior art has the following advantages: 1, promote carriage by power set, carriage drives the rocking arm swing, can promote chuck clamps or unclamps, chuck is clamped or unclamp action and can finish in moment, improve working (machining) efficiency greatly, it is simple in structure, and clamping force is big, it is low to clamp the position tolerance, and action is stable; When 2, push-pull shaft moved forward and backward, main shaft was not subjected to axial tension, and bearing is not easy to wear, improved service life.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

The specific embodiment

Further describe below in conjunction with accompanying drawing:

Referring to Fig. 1, a kind of clamping device of lathe collet, comprise main spindle box 1, main shaft 2, collet 3, promote the push-pull shaft 4 that chuck clamps or unclamps, main shaft 2 is installed in the main spindle box 1 by bearing 21, push-pull shaft 4 is through main shaft 2, the front end of push-pull shaft 4 is by the flexible chuck 3 that is threaded, collet 3 is provided with the conical surface that fits with main shaft 2 ports, have at least one groove 9 on the push-pull shaft 4, main shaft 2 is provided with alignment pin 10, alignment pin 10 is installed in the groove 9 on the push-pull shaft 4, make push-pull shaft 4 relative main shafts 2 can not produce radial displacement, and can rotate synchronously with main shaft 2, push-pull shaft 4 can produce axial displacement along groove 9 under the effect of external force, push-pull shaft 4 is driven by power set by interlinked mechanism and moves forward and backward vertically, reaches the purpose that makes chuck clamp or unclamp, interlinked mechanism has the striking gear that push-pull shaft is moved vertically by swing, by moving forward and backward the carriage that drives striking gear vertically, carriage links to each other with power set.

Described striking gear comprises hinged Rocker arm 5 on stressed axle sleeve 11, mini-roundabout 12, end cap 13 and the mini-roundabout 12 that is set on the push-

pull shaft

4,11 on main shaft 2 and stressed axle sleeve are provided with main

shaft locking cap

20,21 on locking cap 20 and bearing are provided with locking cap 17, each parts holds mutually, main shaft locking cap 20, locking cap 17 are threaded with main shaft 2, end cap 13 is threaded with push-pull shaft 4, and it is fixing with bolt and mini-roundabout 12, mini-roundabout 12 is located by key with push-pull shaft 4, in order when working, to rotate steadily; Rocker arm 5 can be provided with a plurality of, and it circumferentially is distributed on the mini-roundabout 12.The lower end of Rocker arm 5 and mini-roundabout 12 are hinged; the Rocker arm 5 lower end is cam-like 18; front end at this cam-like position and axle sleeve 11 hold out against; the swing by Rocker arm 5 can drive mini-roundabout 12 and move vertically; mini-roundabout 12 drives push-pull shafts 4 by end cap 13; push-pull shaft 4 drives collets 3 and clamps or unclamp; push-pull shaft 4 can reset under collet 3 gradients self resilient force when collet 3 unclamped; when collet 3 is unclamped; the reset effect of push-pull shaft 4 is better; 20 of end cap 13 and main shaft locking caps are provided with back-moving spring 19, and correspondingly mini-roundabout 12; be provided with the groove of this back-moving spring 19 of installation in the axle sleeve 11, back-moving spring 19 can be provided with a plurality of.

Described carriage comprises the fixed cover 14 that links to each other with main spindle box 1, be set in the sliding sleeve 7 outside the fixed cover 14, by bearing 22 traffic cycle 6 is installed on the sliding sleeve 7, traffic cycle 6 links to each other by extension spring 16 with the Rocker arm 5 upper end and drives the Rocker arm 5 swing, sliding sleeve 7 links to each other with power set by thrust plate 8, power set can adopt cylinder, hydraulic cylinder, the device that push-pull effort is arranged described in the prior such as connecting rod, preferred cylinder, adopting cylinder 15 in this enforcement is power set, it is stable for Rocker arm 5 is connected with traffic cycle 6, traffic cycle 6 is provided with groove 23, the quantity of groove 23 is identical with the quantity of Rocker arm 5, and the projection of Rocker arm 5 upper end embeds the groove 23 of traffic cycle 6.

During work, under the effect of power set, promoting thrust plate 8 moves backward, thrust plate 8 drives sliding sleeve 7, move behind bearing 22 and the traffic cycle 6, promote Rocker arm 5, because axle sleeve 11 is held out against and can not be moved forward by main shaft locking cap 20, so mini-roundabout 12 produces axial displacement backward under the effect at cam-like position, Rocker arm 5 lower end, and make end cap 13, push-pull shaft 4 moves after together, push-pull shaft 4 drives collet 3 and moves backward vertically, chuck clamps, reach the purpose that clamps part, during main shaft 2 rotations, main shaft 2 drives chuck 3, push-pull shaft 4, axle sleeve 11, mini-roundabout 12, end cap 13, traffic cycle 6; Rocker arm 5; extension spring 16; back-moving spring 19; main shaft locking cap 20; locking cap 17 rotates together.Thrust plate 8 resets forward under the effect of power set backspace power, thrust plate 8 drives sliding sleeve 7 and traffic cycle 6 reaches reset, 6 reaches reset near traffic cycle at the effect lower shake-changing arm 5 of extension spring 16, cam-like position, effect lower shake-changing arm 5 lower end, mini-roundabout 12, end cap 13, push-pull shaft 4 at collet 3 gradients self elastic force and back-moving spring 19 also reset simultaneously, push-pull shaft 4 promotes collet 3 and moves forward vertically, chuck unclamps, and reaches the purpose of unclamping part.

Claims

1, a kind of clamping device that reaches engine lathe automatically that uses collet, comprise main spindle box (1), main shaft (2), run through the push-pull shaft (4) of main shaft, the collet (3) that links to each other with push-pull shaft (4), push-pull shaft (4) is driven to move forward and backward vertically by power set by interlinked mechanism and collet is clamped or unclamps, it is characterized in that: described interlinked mechanism have by swing make striking gear that push-pull shaft moves vertically, by moving forward and backward the carriage that drives striking gear vertically, carriage links to each other with power set.

2, a kind of clamping device that reaches engine lathe automatically that uses collet as claimed in claim 1, it is characterized in that: described striking gear comprises the last hinged rocking arm (5) of the stressed axle sleeve (11), mini-roundabout (12), end cap (13) and the mini-roundabout (12) that are set on the push-pull shaft (4), mini-roundabout (12) is fixing with end cap (13), end cap (13) is fixing with push-pull shaft (4); rocking arm (5) front end holds out against stressed axle sleeve (11), and stressed axle sleeve (11) is held out against by the locking cap (20) that links to each other with main shaft (2).

3, a kind of clamping device that reaches engine lathe automatically that uses collet as claimed in claim 2, it is characterized in that: be provided with back-moving spring (19) between described end cap (13) and fixed cover (20), correspondingly be provided with the groove that this back-moving spring (19) is installed in mini-roundabout (12), the axle sleeve (11).

4, a kind of clamping device that reaches engine lathe automatically that uses collet as claimed in claim 3, it is characterized in that: described rocking arm (5) is for a plurality of, and it circumferentially is distributed on the mini-roundabout (12).

5, a kind of clamping device that reaches engine lathe automatically that uses collet as claimed in claim 3, it is characterized in that: described rocking arm (5) is cam-like (18) with mini-roundabout (12) hinged place.

6, as claim 2 or 3 or 4 or 5 described a kind of clamping devices that reach engine lathe automatically that use collet, it is characterized in that: described carriage comprises the fixed cover (14) that links to each other with main spindle box (1), is set in the outer sliding sleeve (7) of fixed cover (14), sliding sleeve (7) is gone up and by bearing (22) traffic cycle (6) is installed, traffic cycle (6) links to each other with rocking arm (5) upper end and drives rocking arm (5) swing, and sliding sleeve (7) links to each other with power set by thrust plate (8).

7, a kind of clamping device that reaches engine lathe automatically that uses collet as claimed in claim 6, it is characterized in that: described traffic cycle (6) links to each other by extension spring (16) with rocking arm (5), traffic cycle (6) is provided with groove (23), and rocking arm (5) projection is embedded in the groove (23).

8, as claim 1 or 2 or 3 or 4 described a kind of clamping devices that reach engine lathe automatically that use collet, it is characterized in that: have at least one groove (9) on the described push-pull shaft (4), main shaft (2) is provided with alignment pin (10), and alignment pin (10) is installed in the groove (9) on the push-pull shaft (4).

9, as claim 1 or 2 or 3 or 4 described power set, it is characterized in that: described power set are air cylinder device.

10, as claim 1 or 2 or 3 or 4 described power set, it is characterized in that: described power set are hydraulic cylinder device.