CN2356798Y

CN2356798Y - Five-shaft large taper wire frame for spark linear cutting machine

Info

Publication number: CN2356798Y
Application number: CN 99203766
Authority: CN
Inventors: 潘柏郁
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-03-09
Filing date: 1999-03-09
Publication date: 2000-01-05
Anticipated expiration: 2009-03-09

Abstract

The utility model relates to a taper cutting device for linear cutting tools, which particularly relates to an electrode wire frame of taper cutting. The wire frame is provided with a pair of an upper and a lower rotary shafts which are linked and arranged on an upper and a lower wire arms on the wire frame of the existing cutting machine; a pair of upper guide wheels are arranged on the upper rotary shaft; a lower guide wheel is arranged on the lower rotary shaft; a taper head is fixed under dragging plates of a U shaft and a V shaft; a Z shaft controlling the upper guide wheel to move up and down is fixed to a Z-direction dragging plate which forms cross-character with the dragging plates of a U direction and a V direction. The utility model has the advantages of high processing stability, high automatization, high precision, convenient operation, etc.

Description

Five big taper guide frames of WEDM

The utility model relates to wire cutting machine tool tapering cutter sweep, particularly the wire electrode coil holder that cuts about tapering.

Tapering cutting mechanism commonly used has single armed, both arms to move and three kinds of rocking lever formulas, the general rocking lever formula that adopts of big tapering cutting.Its major defect is that the dynamic stability of guide frame is undesirable, and the pendulum-type coil holder is because frame for movement so the accuracy of manufacture is had relatively high expectations, also exists the factor of many generation cutting errors in addition.

The purpose of this utility model be to avoid the defective of prior art and provide a kind of can fundamentally eliminate the cutting of big tapering the time the meet error and five big taper guide frames of wire cutting machine of stagger.

Goal of the invention of the present utility model is achieved by the following scheme: the upper and lower rotating shaft that a pair of interlock is installed on the upper and lower line arm of existing wire cutting machine coil holder, on a pair of upper block is installed on the rotating shaft, a lower tumbler is installed on the following rotating shaft, the tapering head is fixed under U axle, the V axis carriage, and the Z axle that moves up and down of control upper block is fixed on U and becomes the Z of cross to, V on planker to planker.

Tapering head of the present utility model is directly dragged by U, V axle, changed the design philosophy of conventional taper guide frame, difference compensation function by computer, meet error and stagger when fundamentally having eliminated the cutting of big tapering, and good stability in the tapering process, automaticity are higher, and tapering machining accuracy and fineness are improved greatly.

Description of drawings:

Fig. 1 is a structure principle chart of the present utility model.

Fig. 2 is that V is to the guide wheel motion diagram.

Fig. 3 is that U is to the guide wheel motion diagram.

Embodiment to the utility model is elaborated again below in conjunction with above-mentioned accompanying drawing.

As shown in Figure 1, five big taper guide frames of wire cutting machine are upper and lower rotating shafts 2,4 that a pair of interlock is installed on the reach the standard grade arm and the arm 1 that rolls off the production line of existing wire cutting machine coil holder, and last rotating shaft 4 ends install a pair of upper block 5, and following rotating shaft 2 ends install a lower tumbler 3.Tapering head 6 is fixed under U axle 8, V axle 7 plankers, and the Z axle 9 that moves up and down of control upper block 5 is fixed on U and becomes the Z of cross to, V on planker to planker.

The course of work of coil holder is after wire electrode passes through upper block 5 from tapering head 6 tops, to enter lower tumbler 3, and the arm 1 that rolls off the production line returns wire storage tube 10.V axle 7 moves and upper and lower rotating shaft 2,4 interlocks during the tapering cutting, makes corresponding angle of upper and lower rotating shaft 2,4 rotations, to guarantee the smooth cutting of V axle 7 direction taperings.

The scheme of motion: V directly drives V axial filament bar by the V shaft step motor to moving of guide wheel and realizes that the angle of deflection of upper and lower guide wheel is driven by upper and lower rotating shaft stepper motor during the tapering cutting, shown in figure (2).

Shown in figure (3), M, N are the point of contact of wire electrode upper and lower guide wheel when vertical, when U moves to U3 or U4 to the left or to the right to guide wheel, the actual point of contact of wire electrode is A, B and A ', B ', as require angle α, angle β to equate, the displacement L2 of U axle forward and negative sense＞L1 then, the difference of L2 and L1 is exactly the distance, delta U (deviation compensation amount) that the tapering head moves at U axle forward more, can allow computer finish automatically, Δ U numerical values recited changes along with the change of coil holder, last lower tumbler centre-to-centre spacing H (Z axle) and angle α.Error delta X on cutting basal plane F, the G can drive the X-axis planker by stepper motor and move Δ X toward the X-axis forward and compensate (with the interlock of U axle), and its deviation compensation amount can be by following formula to calculating.

ΔX＝2R(secα-1)

ΔU＝2ΔX＝4R(secα-1)

Can find out from the textural of coil holder in addition, on the upper block, move down by the Z shaft step motor and drive the control of Z axial filament bar, when coil holder installation post debugging, (promptly go up with optics apparatus measures Z axle arbitrfary point height H, lower tumbler centre-to-centre spacing), in the input control computer reservoir, be the different centres of gyration of adaptation as the user, the split requirement of different-thickness workpiece, on needing to change, lower tumbler centre-to-centre spacing H and cutting basal plane F, G (the cutting edge face of mould) is to the distance h at lower tumbler center, as long as import upper block on the Z axle in computer, variable Δ Z and the Δ h that moves is just passable down.Thereby stopped the error that user oneself measures, improved the geometry and the dimensional accuracy of workpiece.

Claims

1. five big taper guide frames of an electric live wire wire cutting machine, it is characterized in that: go up upper and lower rotating shaft (2) that a pair of interlock is installed, (4) at reach the standard grade arm and the arm (1) that rolls off the production line of existing wire cutting machine coil holder, go up rotating shaft (4) and go up a pair of upper block (5) is installed, following rotating shaft (2) is gone up a lower tumbler (3) is installed, tapering head (6) is fixed under U axle (8), V axle (7) planker, and the Z axle (9) that moves up and down of control upper block (5) is fixed on U and becomes the Z of cross to, V on planker to planker.