CN2479287Y

CN2479287Y - Clamping device

Info

Publication number: CN2479287Y
Application number: CN 00210098
Authority: CN
Inventors: 薛克寰
Original assignee: Dalian Machine-Tool Group Co Ltd
Current assignee: Dalian Machine-Tool Group Co Ltd
Priority date: 2000-08-26
Filing date: 2000-08-26
Publication date: 2002-02-27
Anticipated expiration: 2010-08-26

Abstract

A clamping device comprises a wedge iron driving mechanism, long bars of rear float sliding shim blocks, front float sliding shim blocks, a flexible guiding mechanism and a curved lever pressing mechanism. The 5-10 long bars of rear float sliding shim blocks are provided in parallel in a T-shaped slot equipped in the front portion of a sliding body. The 4-9 front float sliding shim blocks are placed at the front ends of the rear float sliding shim blocks at intervals. The flexible guiding mechanism respectively contacts flexibly with the end surfaces of the front float sliding shim blocks. A sliding plate of which the front end is a cavetto surface composes the flexible guiding mechanism. The utility model has the advantages that after being processed, the work-pieces can still be clamped on the machine tool fixedly. The movement direction of the wedge iron is perpendicular to the clamping direction, thereby the clamping of the work-pieces can be pined once the power is off, and realizing power-off protection meaning protection of work-pieces and knife tools.

Description

A kind of clamp device

The utility model relates to anchor clamps, more particularly relates to a kind of multiple spot floating clamp.

Bearing cap is a kind of complex-shaped part, and its precision is very big to the product influence, and the not too high requirement of its external dimension.In the course of working of bearing cap, particularly in batch production process, require fast, move fixed clamping, its machining tool (milling cutter) is in a single day loosening up to several ten thousand yuan will to damage cutter and extremely useless workpiece.

Conventional art is to lack with oil respectively to clamp, and it is subjected to the force direction clamping direction is consistent, in case outage, clamping direction will become flexible, and very complicated with elastic claw or hinge type clamp device, and requires very strict to the external dimension of workpiece.

The purpose of this utility model provides a kind of ten point floating clamp devices that can realize that fast and stable clamps.

The purpose of this utility model is to realize like this.

A kind of clamp device, it comprises driving mechanism and flexible hydraulic guide mechanism and the lever hold-down mechanism that places in the fixture, it is characterized in that said driving mechanism is by the drift that places in drift body and the following drift body, drift pull bar and push rod and pull bar, the clamping pull bar that is connected on the push rod and drives said flexible guiding mechanism constitutes: said flexible hydraulic guide mechanism is by the sliding wedge piece that floats after parallel 5～10 block length bar shapeds that are placed in the anterior T-slot of gliding mass, the sliding wedge piece floats before 4～9 of alternate placement on sliding wedge piece front end is floated in the back, constituted with preceding unsteady sliding wedge piece end face Elastic Contact and front end slide plate respectively by concave arc surface; Said lever hold-down mechanism is the pressing plate that joined by the slide plate with said concave arc surface, is compressed by pressing plate and dragged the push rod that unclamps and place the adjustment piece of push rod front end to be constituted by the baffle plate that planker drives.

Said flexible hydraulic guide mechanism comprises the sliding

wedge piece

10,12 that floats after parallel 5～10 block length bar shapeds that are placed in the anterior T-slot 37 of gliding mass, float before 4～9 of alternate placement on the sliding wedge piece is floated in back sliding wedge piece 11 and contact with preceding unsteady sliding wedge piece end face respectively and front end is the slide plate 14 of concave arc surface has promptly been realized Elastic Contact between the two at slide plate 14 spring and the fore-set that the end has been provided with the pretension effect that contact with preceding unsteady sliding wedge piece 11 front-end faces.

Said lever hold-down mechanism comprises 4～9 ingot-shaped pressing plates 7 that are connected with the slide plate 14 usefulness screws 31 of concave arc surface, there is relative fine motion in the orthodrome of the bottom of said ingot-shaped pressing plate with the concave arc surface of slide plate, two roundlet arcs on its top contact with the push rod 6 that is cylinder T shape head respectively, and the top thick stick 6 of the said T of having shape head is the cover 2 that is positioned at fixture 4 front ends.It is driven by a drift pull bar 16, is subjected to push rod before drift 17 29 that drift drives and the pull bar 24 behind the drift, and the sphere columnar head of clamping pull bar 13 front ends that are connected with push rod before the said drift is positioned at the groove 30 of gliding mass.The drift pull bar 16 one ends that are positioned at drift upper end T type groove link to each other with active force and drive and sail drift and move up and down.When drift pull bar 16 moved upward, drift also moved upward, and drift front bevel 27 driving push rods forwards move pull bar is forwards moved; When the drift pull bar moved downward, drift also moved downward, and drift back bevel 25 orders about pull bar 24 and moves backward, thereby made said pull bar 13 move backward.Said push rod 29 and pull bar 24 are connected as a single entity by screw.

Good effect of the present utility model:

1. the utility model can be realized floating fast clamping:

2. after workpiece processing is finished, still can be clamped in securely on the lathe;

3. because the motion and the clamping direction of drift are perpendicular, so in a single day the clamped condition of the workpiece that cuts off the power supply will be dead by pin, thereby the realization power-off protection has promptly been protected cutter and workpiece

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

Fig. 2 is the plan view of Fig. 1.

Fig. 3 is the drift schematic representation.

Fig. 4 is the back unsteady sliding wedge piece schematic representation with a 45.

Fig. 5 is the back unsteady sliding wedge piece schematic representation with two 45s.

Fig. 6 is the preceding unsteady sliding wedge piece schematic representation with two 45s.

Fig. 7 is a top thick stick baffle plate schematic representation.

Below in conjunction with accompanying drawing the utility model is described in further details.

Drift 17 is positioned at

drift body cover

18,26 up and down, and last drift cover is fixed in the drift body 19, and following drift body cover is fixed on down in the drift body 23, and upper and lower drift body is fixed in the fixture 4.The pull bar 24 that is positioned at the drift rear places drag link sleeve 22, and connecting rod 21 is connected with pull bar and is positioned on the cover plate 20.Be positioned at drift front bevel 27 the place aheads and be connected with pull bar 13 at the front end of the push rod 29 of pushing rod sleeve 28.The sphere columnar head of pull bar front end is positioned at the groove of gliding mass 9.The front portion of gliding mass 9 is provided with T type groove, within it the parallel back unsteady sliding wedge piece 10 with 45 that respectively is placed with long strip in both sides; Middle parallel anti-back unsteady sliding wedge piece 12 that 5～10 two 45s are arranged and alternate back 4～9 piece the preceding unsteady sliding wedge pieces 11 with two 45s of sliding wedge piece on it that float that place, to be provided with front end be concave arc surface and place slide plate 14 in the frid 15 at the front end of preceding unsteady sliding wedge piece, slide plate links to each other with ingot-shaped pressing plate 7 through bolt, and radial clearance 33 and axial clearance 32 are arranged between ingot-shaped pressing plate and bolt.Two little arc ends on ingot-shaped pressing plate top are pressed in respectively on two push rods 6, and push rod 6 is to place in the cover 3 that is fixed on fixture.The intrinsic adjustment piece 1 that contacts with caught workpiece of the front end of push rod 6.

Fig. 2 illustrates pull bar, the position relation of float sliding wedge piece and planker.In the unsteady sliding wedge piece, two back unsteady sliding wedge pieces 10 with a 45 are arranged, 4 back unsteady sliding wedge pieces 12 that two 45s are arranged, 5 preceding unsteady sliding wedge pieces 11 with two 45s, be connected with five said five ingot-shaped pressing plates respectively with contacted five slide plates 14 of front-slider, be provided with the spring 35 and the fore-set 34 of pretension effect in the rearward end of slide plate.Said T type groove 37 also is connected with planker 8, and planker 8 is affixed with the plate washer 5 that can drive push rod 6.When pull bar travelled forward, gliding mass also travelled forward.Under the effect of gliding mass, the unsteady sliding wedge piece in front and back promotes slide plate 14 and travels forward.Slide plate 14 promotion pressing plates 7 compress push rod 6 makes workpiece clamped.If by the folder working surface depression is arranged, the unsteady sliding wedge piece that then relative this place does not compress will continue forward until compressing.If there is projection on the caught workpiece surface, then Xiang Guan unsteady sliding wedge piece slides from the trend both sides, retreats caught workpiece is evenly clamped to guarantee to withstand on the push rod that protrudes the position.When pull bar moves backward, drive gliding mass 9 and withdraw from backward, the planker that hangs on the T type groove withdraws from immediately backward, withdraws from backward with the plate washer drive push rod that planker is connected mutually simultaneously, makes caught workpiece loosening.

Fig. 3 is the drift schematic representation.Fig. 4 is the back unsteady sliding wedge piece schematic representation with a 45.Fig. 5 is the back unsteady sliding wedge piece schematic representation with two 45s.Fig. 6 is the preceding unsteady sliding wedge piece schematic representation with two 45s.Fig. 7 is the structural representation of baffle plate, and 10 push rods 6 are respectively in the both sides of baffle plate 5 and are embedded in its 10 the semicircle breach 36.

Claims

A kind of clamp device, it comprises driving mechanism and flexible hydraulic guide mechanism and the lever hold-down mechanism that places in the anchor clamps, it is characterized in that said driving mechanism is made of the clamping pull bar that places drift, drift pull bar and push rod and pull bar in drift body and the following drift body, is connected on the push rod and drives said flexible guiding mechanism; Said flexible hydraulic guide mechanism is the sliding wedge piece and being constituted with preceding unsteady sliding wedge piece end face Elastic Contact and the front end slide plate by concave arc surface respectively of floating before 4～9 of alternate placement by the sliding wedge piece that floats after parallel 5～10 block length bar shapeds that are placed in the anterior T-slot of gliding mass, on sliding wedge piece front end is floated in the back; Said lever hold-down mechanism is the pressing plate that joined by the slide plate with said concave arc surface, is compressed by pressing plate and dragged the push rod that unclamps and place the adjustment piece of push rod front end to be constituted by the baffle plate that planker drives.