Cylinder inclined hole processing method on the Digit Control Machine Tool
Technical field
The present invention relates to a kind of processing method of shaft-like workpiece cylinder inclined hole.
Background technology
At present; inclined hole on the axle class cylinder; generally all want to finish on the work in-process heart or the CNC milling machine; because machining center and CNC milling machine belong to high-end devices and not only cost an arm and a leg; and processing cost height; adopt special fixture to finish on the bench drill so can be chosen in usually, these anchor clamps mainly are dimerous by skewback and pressing plate, and the gradient of skewback equals workpiece inclined hole axis and workpiece angle radially.Be provided with coupled pressing plate above the skewback, but establish the axially extending bore of place work piece in the pressing plate, be provided with the big inclined hole of diameter greater than the workpiece inclined hole on position corresponding with the workpiece inclined hole on the pressing plate, this big inclined hole that is positioned at axially extending bore top is provided with fairlead.On pressing plate, also be provided with another vertical with axially extending bore and be communicated with screw in addition, be provided with lock screw in it.Add man-hour, special fixture is placed on the bench drill work top fixes, again workpiece is installed in the anchor clamps and lock by screw then, shake pull bar drill bit is pierced in the workpiece by fairlead.The drawback that this kind processing mode exists is: 1, the positional precision in hole be cannot say for sure to demonstrate,prove.The accuracy of alignment of drill bit relies on fairlead fully, because fairlead and drill bit are gapped, so can cause the converted products center deviation to occur.2, fairlead rapid wear changes that frequency is high by 3, drilling tool does not have alignment function and easy to wear, has increased reconditioning frequency 4, fairlead centering causes feed speed low, influences working (machining) efficiency.
Summary of the invention:
The object of the present invention is to provide a kind of clamping quick, crudy is good, the processing method of cylinder inclined hole on the high Digit Control Machine Tool of production efficiency.The present invention mainly is on centre numerically controlled lathe, with anchor clamps workpiece is installed on the spindle chuck, rotate synchronously with main shaft, and drill bit is located on the knife rest, sets centre drill centering, rat holing through numerical control programming.
Particular content of the present invention is as follows:
1, anchor clamps are installed on the two-jaw(ed)chuck of numerically controlled lathe, these anchor clamps are made up of relative two halves, and their side (i.e. the outside) is corresponding with the chuck jaw bare terminal end, and by securing member anchor clamps are fixed on the chuck jaw.The opposite side of two halves anchor clamps is that the relative side (inboard) of two halves anchor clamps is established the half-cylindrical clamping face corresponding with workpiece, and its axis recedes, and equals workpiece inclined hole axis and workpiece angle radially with the angle on chuck plane.Be provided with the side opening groove in the inboard of above-mentioned two halves anchor clamps, this groove is connected with the cylinder of clamping face clamping face is divided into two half-cylindrical clamping faces up and down.Be fixed with the drill bit of level in addition on the numerically controlled lathe knife rest, it can be from above-mentioned groove turnover.
2, workpiece being placed in the clamping face of two halves anchor clamps, is that workpiece is located control by numerically controlled lathe up and down and clamped button and clamp or unclamp by step corresponding with workpiece in the anchor clamps, rotates synchronously with main shaft so that make it.
3, set centre drill centering through numerical control programming, actuating motor makes the workpiece rotation on the main shaft drive chuck then, and the drill bit of auto-feed then will get out inclined hole above the workpiece.
The present invention compared with prior art has following advantage:
1, need not feel relieved behind a clamping location, clamping is quick, the production efficiency height again.The processing that this processing method can make the cylinder inclined hole becomes equally easy with the processing on the turning face of cylinder.
2, special fixture accurate positioning, the machining accuracy height.
3, bit wear is few, and processing cost is low.
Description of drawings:
Fig. 1 is that the master of anchor clamps user mode of the present invention looks schematic diagram.
Fig. 2 is the schematic top plan view of anchor clamps user mode of the present invention.
Fig. 3 is the schematic side view of anchor clamps user mode of the present invention.
The specific embodiment: on Fig. 1, Fig. 2 and Digit Control Machine Tool shown in Figure 3 in the schematic diagram of the anchor clamps user mode of cylinder inclined hole processing method, anchor clamps 1 are installed on two pawls, 2 chucks 3 of numerically controlled lathe, these anchor clamps are made up of relative two halves, their outside is corresponding with the chuck jaw bare terminal end, and by securing member 4 anchor clamps is fixed on the chuck jaw.The half-cylindrical clamping face corresponding with workpiece established in the inboard of two halves anchor clamps, and its axis recedes, and equals workpiece inclined hole axis and workpiece 5 angle radially with the angle on chuck plane.Be provided with the side opening groove in the inboard of above-mentioned two halves anchor clamps in addition, this groove is connected with the cylinder of clamping face clamping face is divided into two half-cylindrical clamping faces up and down.Be fixed with the drill bit 6 of level in addition on knife rest, it can be from above-mentioned groove turnover.Workpiece being placed in the clamping face of two halves anchor clamps, is that workpiece is located up and down by step corresponding with workpiece in the anchor clamps, and the control by numerically controlled lathe clamps button and clamps or unclamp.Set centre drill centering through numerical control programming, actuating motor makes the workpiece rotation on the main shaft drive chuck then, and the drill bit of auto-feed then will get out inclined hole above the workpiece.