CN208866774U - It is a kind of to stablize durable Pneumatic fixture for lathe - Google Patents

Abstract

The utility model belongs to field of mechanical technique, refers in particular to a kind of stablize durable Pneumatic fixture for lathe.The fixture with cavity includes the driving mechanism in the clamping system for clamping workpiece and the cavity positioned at fixture for driving clamping system to move；The clamping system, which includes at least, left and right clamp system, and rocker is hinged between the clamp system of left and right, and inclined-plane is formed in the middle part of rocker, and the driving mechanism is connected with oscillating rod, and oscillating rod is equipped with recess portion compatible with inclined-plane.When the left and right clamping section of the utility model and the structure of upper clamping section and the ingehious design of driving mechanism make clamping workpiece, locating convex block, positioning plate and arc portion form the positioning datum of workpiece, left and right clamping section and upper clamping section sufficiently abut the contact surface of workpiece, workpiece and rod head centering, ensure that clamp precision and good clamping effect；In addition, it is not necessary that workpiece to be put into from side when clamping, it is convenient for mounting and clamping.

Description

It is a kind of to stablize durable Pneumatic fixture for lathe

Technical field

The utility model belongs to field of mechanical technique, refers in particular to a kind of stablize durable Pneumatic fixture for lathe.

Background technique

Currently, fixture is widely used during lathe processing in industrial processes, for workpiece When being clamped, if fixture cannot fix workpiece well, the quality that will result in product goes wrong, and size is easy to produce Raw deviation, the accuracy and precision of processing cannot guarantee that the qualification rate of the efficiency and workpiece product that lead to production is not high well, Production efficiency is greatly reduced, the progress of production is unfavorable for.

Existing clamp mechanism is mainly made of lathe chuck and lathe clamping jaw.Clamping jaw is driven to press from both sides product by power source Tightly or loosen, carries out the processing of product.Since the accurate to dimension of product is more demanding, be easy to cause processing in size not Vibration knife phenomenon in stablizing or producing and processing, drawing requirement is not achieved in concentricity, and product clamping is difficult.It cannot to solve fixture The problem of precisely stablizing aid.Therefore, the prior art need to be improved.

Summary of the invention

The purpose of the utility model is to provide a kind of structure is simple, convenient and precisely stable holding turning attachment.

Purpose of the utility model is realized as follows: the fixture with cavity includes the folder for clamping workpiece Clamping system and the driving mechanism in the cavity of fixture for driving clamping system to move；The clamping system, which includes at least, to be had Left and right clamp system is hinged with rocker between the clamp system of left and right, and inclined-plane, the driving mechanism connection are formed in the middle part of rocker There is oscillating rod, oscillating rod is equipped with recess portion compatible with inclined-plane.

In above description, more preferred scheme, the oscillating rod is that one end is articulated with the rocker arm of fixture, hinged on rocker arm There is pull rod, pull rod is equipped with recess portion compatible with inclined-plane.

In above description, more preferred scheme is equipped with the vertical bar being hinged with the rocker, vertical bar on the fixture On the screw clamp that is arranged with spring and is provided with above spring, it is compatible with workpiece fixed to be provided on the fixture Position pin and the positioning plate positioned at one side-lower of screw clamp, the other end of the positioning pin are connected with the screw clamp, institute State the nut being threaded with above screw clamp on vertical bar.

In above description, more preferred scheme, the clamping system further includes the upper clamping mechanism having against fixture, on Clamp system includes movable V-block and lower section forms the arc portion being adapted to work piece interface, is arranged on the activity V-block Fluted, the oscillating rod is the driving lever that end is adapted with the groove and upper clamping mechanism is driven to move up and down.

In above description, more preferred scheme, the driving mechanism includes rod head and for driving rod head The power source of axial movement, one end of the rod head are connected with connecting rod, are hinged on connecting rod for driving clamping system to transport The dynamic oscillating rod.

In above description, more preferred scheme is embedded with the cutter guiding for lathe tools guiding in the fixture Set.

In above description, more preferred scheme, the connecting rod is connected with earrings plate, and the oscillating rod is articulated with earrings Plate.

In above description, more preferred scheme is embedded with the cutter guiding for lathe tools guiding in the fixture Set.

In above description, more preferred scheme has been bolted for the activity V type block on the fixture Against fixed plate.

In above description, more preferred scheme is articulated with fixture in the middle part of the driving lever and for inverted V-shape, driving lever One end is spherical shape.

In above description, more preferred scheme, the height of the positioning pin be equal to positioning plate and workpiece height and.

Compared with the prior art, the utility model has prominent and beneficial technical effects that: the left and right clamping section of the utility model and When the structure of upper clamping mechanism and the ingehious design of driving mechanism make clamping workpiece, locating convex block, positioning plate and arc portion are formed The positioning datum of workpiece, left and right clamping section and upper clamping mechanism sufficiently abut the contact surface of workpiece, workpiece and rod head pair In, it ensure that clamp precision and good clamping effect；In addition, it is not necessary that workpiece to be put into from side when clamping, it is convenient for mounting and clamping.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model.

Fig. 2 is the main view of the utility model.

Fig. 3 is the cross-sectional view in Fig. 2 at B.

Fig. 4 is the cross-sectional view in Fig. 2 at C.

Fig. 5 is the partial sectional view in Fig. 2 at D.

Fig. 6 is the structural schematic diagram in another direction of the utility model.

Meaning represented by figure label:

1- rod head；2- connecting rod；3- earrings plate；The clamping section 4- or so；5- rocker；The trapezoidal portion 6-；7- rocker arm；8- is drawn Bar；9- recess portion；10- vertical bar；11- spring；12- screw clamp；13- positioning pin；14- positioning plate；15- nut；It is clamped on 16- Mechanism；17- activity V-block；18- arc portion；19- groove；20- driving lever；21- cutter guide sleeve；22- fixed plate；23- convex Block.

Specific embodiment

The utility model is further described combined with specific embodiments below, referring to Fig.1-6.

Embodiment one: a kind of to stablize durable Pneumatic fixture for lathe, the fixture with cavity includes for clamping The clamping system of workpiece and the driving mechanism in the cavity of fixture for driving clamping system to move；The clamping system is extremely Less include left and right clamp system 4, rocker 5 is hinged between left and right clamp system 4, the middle part of rocker 5 forms inclined-plane 6, institute It states driving mechanism and is connected with oscillating rod, oscillating rod is equipped with recess portion 9 compatible with inclined-plane 6.

Preferably, the oscillating rod is that one end is articulated with the rocker arm 7 of fixture, it is hinged with pull rod 8 on rocker arm 7, on pull rod 8 Equipped with recess portion 9 compatible with inclined-plane 6.After assembly, rocker arm flexibly moves under the pulling of pull rod.

Preferably, being equipped with the vertical bar 10 being hinged with the rocker 5 on the fixture, spring is arranged on vertical bar 10 11 and the screw clamp 12 that is provided with above spring 11, positioning pin 13 compatible with workpiece is provided on the fixture With the positioning plate 14 for being located at 12 1 side-lower of screw clamp, the other end of the positioning pin 13 is connected with the screw clamp 12 It connects, the nut 15 being threaded on the vertical bar 10 above screw clamp 12.The height of the positioning pin is equal to positioning The height of plate 14 and workpiece and.

Preferably, the clamping system further includes the upper clamping mechanism 16 having against fixture, upper clamping mechanism 16 includes There are movable V-block 17 and lower section to form the arc portion 18 being adapted to work piece interface, is provided on the activity V type block 17 recessed Slot 19, the oscillating rod are the driving lever 20 that end is adapted with the groove 19 and upper clamping mechanism 16 is driven to move up and down.Dress After matching, driving lever flexibly moves under the pulling of pull rod.

Preferably, forming locating convex block 23 on the fixture, locating convex block 23, positioning plate 14 and arc portion 18 form work The positioning datum of part.Above-mentioned technical proposal formed to workpiece all around above and below positioning.

Preferably, the driving mechanism includes rod head 1 and the power for driving rod head 1 to be axially moved Source, one end of the rod head 1 are connected with connecting rod 2, and the swing for driving clamping system to move is hinged on connecting rod 2 Bar.

Preferably, the connecting rod 2 is connected with earrings plate 3, the oscillating rod is articulated with earrings plate 3.

Preferably, being embedded with the cutter guide sleeve 21 for lathe tools guiding in the fixture.Cutter guide sleeve 21 The rigidity for enhancing cutter advantageously ensures that processing quality and improves cutting data.

Preferably, be bolted on the fixture for the movable V-block 17 against fixed plate 22.

Preferably, the middle part of the driving lever 20 is articulated with fixture and is inverted V-shape, one end of driving lever 20 is spherical shape.

Working principle: workpiece is with bottom surface, side and semicircle cambered surface in two the two pieces of positioning plates 14 in left and right, left and right positioning pins 13 It is positioned on movable vee-block 17；When cylinder piston is pulled earrings plate 3 by rod head 1, connecting rod 2 and screw to the left, driving lever The bulb of 20 right ends just stirs movable vee-block 17 for workpiece radial positioning.At the same time, rocker arm 7 drives pull rod 8 to pass through trapezoidal portion 6 are pressed downward rocker 5, and 5 both ends screw clamp 12 of rocker is by Workpiece clamping.Cutter guide sleeve 21 enhances the rigidity of cutter, favorably In guarantee processing quality and improve cutting data.

Above-described embodiment is only the preferred embodiment of the utility model, not limits the protection model of the utility model according to this It encloses, therefore: the equivalence changes that all structures, shape, principle according to the utility model are done should all be covered by the protection of the utility model Within the scope of.

Claims (10)

1. a kind of stablize durable Pneumatic fixture for lathe, which is characterized in that the fixture with cavity includes for clamping The clamping system of workpiece and the driving mechanism in the cavity of fixture for driving clamping system to move；The clamping system is extremely Less include left and right clamp system (4), be hinged between left and right clamp system (4) rocker (5), rocker forms in the middle part of (5) Inclined-plane (6), the driving mechanism are connected with oscillating rod, and oscillating rod is equipped with inclined-plane (6) compatible recess portion (9).

A kind of stablize durable Pneumatic fixture for lathe 2. according to claim 1, it is characterised in that: the oscillating rod is one End is articulated with the rocker arm (7) of fixture, is hinged with pull rod (8) on rocker arm (7), and pull rod (8) is equipped with compatible recessed with inclined-plane (6) Portion (9).

A kind of stablize durable Pneumatic fixture for lathe 3. according to claim 1, it is characterised in that: wear on the fixture There is the vertical bar (10) being hinged with the rocker (5), spring (11) is arranged on vertical bar (10) and is provided with positioned at spring (11) screw clamp (12) above is provided with positioning pin (13) compatible with workpiece on the fixture and is located at screw clamp The other end of the positioning plate (14) of (12) one side-lowers, the positioning pin (13) is connected with the screw clamp (12), described The nut (15) being threaded on vertical bar (10) above screw clamp (12).

A kind of stablize durable Pneumatic fixture for lathe 4. according to claim 1 or 2 or 3, it is characterised in that: the clamping System further includes the upper clamping mechanism (16) having against fixture, and upper clamping mechanism (16) includes movable V-block (17) and lower section The arc portion (18) being adapted to work piece interface is formed, fluted (19), the oscillating rod are set on the activity V-block (17) The driving lever (20) for being adapted for end with the groove (19) and upper clamping mechanism (16) being driven to move up and down.

A kind of stablize durable Pneumatic fixture for lathe 5. according to claim 4, it is characterised in that: form on the fixture Have locating convex block (23), locating convex block (23), positioning plate (14) and arc portion (18) form the positioning datum of workpiece.

A kind of stablize durable Pneumatic fixture for lathe 6. according to claim 1, it is characterised in that: the driving mechanism packet Include rod head (1) and the power source for driving rod head (1) to be axially moved, one end connection of the rod head (1) Have connecting rod (2), the oscillating rod for driving clamping system to move is hinged on connecting rod (2).

A kind of stablize durable Pneumatic fixture for lathe 7. according to claim 6, it is characterised in that: the connecting rod (2) is even It is connected to earrings plate (3), the oscillating rod is articulated with earrings plate (3).

A kind of stablize durable Pneumatic fixture for lathe 8. according to claim 4, it is characterised in that: be embedded in the fixture There is the cutter guide sleeve (21) for lathe tools guiding.

A kind of stablize durable Pneumatic fixture for lathe 9. according to claim 4, it is characterised in that: pass through on the fixture Bolt be fixed with for the movable V-block (17) against fixed plate (22).

A kind of stablize durable Pneumatic fixture for lathe 10. according to claim 4, it is characterised in that: the driving lever (20) Middle part be articulated with fixture and for inverted V-shape, one end of driving lever (20) is spherical shape.