JPS5852783B2 - Cutting tool polishing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a polishing device for accurately polishing cutting tools used in milling and the like.

Conventionally, in order to polish cutting tools used for milling, etc., the tools in use were removed from the machine and polished, but in this case, the tools are attached and detached from the machine and the polishing device at the same time. The tool is attached and detached twice for each polishing, and each time a small error overlaps, resulting in a variation in the precision of the cutting edge of between 3/100 and 4/100. It is nearly impossible to align the surfaces within 5 times, and as a result, the ground surface becomes rough, and in order to correct this unevenness, the current situation is to use a diamond file or the like to sharpen the surface for a long time.

This is because, apart from the precision of new products, the tool polishing machines and milling machines currently in use have inherent runout, and as long as they are attached and detached twice as mentioned above, they can be polished for a long time. The result is the same, and it may be slightly improved by reversing the fitting position when attaching and detaching the cutting tool, but it is impossible to reduce the error to within 2/100. .

In order to improve the current situation, the present invention provides a cutting tool polishing device that polishes the cutting tool's cutting edge while the cutting tool is attached to the main shaft or arbor of a milling machine.

To explain the embodiment of the present invention with reference to the drawings, reference numeral 1 denotes a box-shaped bed with a seat plate 2 fixed to the bottom surface, and an electromagnet 3 inside the bed.
It is equipped with.

Reference numeral 4 denotes a body erected on the upper surface of the bed 1, whose lower part is pivotally supported by a shaft pin 6 to an ear portion 5 integrally protruding from the center of the upper surface of the bed 1 at an appropriate interval. It is possible to rotate and tilt around the center.

Reference numeral I designates a rotating body supported rotatably by 360 degrees in a horizontal hole 8 bored in the upper part of the main body 4. Its front end is formed into an enlarged head 7a outside the hole 8, and an enlarged head 7a is formed on the outer periphery of the outer body 7b. A worm gear 9 is carved and meshed with a worm 10 provided inside the main body 4.

Reference numeral 11 denotes a slide table which is fitted in a guide dovetail groove 12 provided at the front end of the enlarged head 7a of the rotating body 7 so as to be slidable from side to side.A motor 14 is fixedly attached to the slide table 11, and a diamond grindstone, borazon grindstone, etc. is attached to the motor shaft. A rotating grindstone 15 is pivoted and fixed via presser washers 16 and 17.

Reference numeral 18 denotes a grindstone cover attached to the front end of the motor 14, which surrounds half the circumference of the rotary grindstone 150, and is movable in the circumferential direction so that it can be set at any position.

Reference numeral 19 indicates a guide groove 1 at the center of the back surface of the slide base 11.
A rack fixed in two directions is meshed with a pinion 20, the shaft 21 of the pinion 20 is passed through the enlarged head 7a of the rotating body 7, and a bundle 22 for moving the grindstone is fixed to the tip thereof.

The shaft 23 of the worm 10 is a bearing 24 provided in the main body 4.
The bundle 2 for the same circumference is attached to the tip of the bundle 2.
5 is fixed.

Further, the peripheral edge of the enlarged head 7a of the surrounding mesh body 7 has a 360° angle.
A scale 26 is engraved over the whole area, so that the angle of rotation of the enclosure 70 relative to the main body 4 can be read.

27 is a presser foot provided on the outer periphery of the body 7b of the netting body 7;
The net I is braked by a bundle 29 for fixing the net through a screw 28 screwed into the upper part of the main body 4.

30 is a thrust washer fixed to the end surface of the body portion 7b.

Reference numeral 31 denotes a protruding arm member for fixing the main body 4 that is integrally provided between the lower end and the side of the main body 4, and is fixed to the lower surface of the main body 4 by a bolt 32 at its base end, and a screw shaft 33 is implanted on the outer surface of the tip. The tip of the screw shaft 33 is inserted into the elongated hole 35 provided in the guide portion 34 integrally provided on the upper surface of one side of the bed 1, and a fixing handle 36 is fixed to the tip. be.

Further, a long hole 37 is provided in the center of the fixing arm member 31, and a screw shaft 38 provided upright on the top surface of the bed 1 is inserted into the long hole 37, and an adjustment bundle 39 is screwed into the tip thereof. It's in.

Further, a scale 40 is carved on the outer periphery of the elongated hole 35 in the guide portion 34 so that the inclination angle of the main body 4 can be read.

41 is a switch for excitation of the electromagnet 3 provided at a suitable position on the upper surface of the bed 1, and 42 is a forward/reverse switch for the motor 14.

Reference numeral 43 denotes a cutting edge holder for setting the cutting edge position of a tool to be polished by setting it on a work tool (not shown) of a milling machine or the like. The blade edge holder 48 is attached to the support fitting 46 provided in the blade via a support rod 47.

The manner in which the embodiment configured as described above is used is as follows: The blade edge receiver 43 sets the blade edge position of the tool to be polished, which is attached to a work table (not shown) of a milling machine or the like and a spindle. The bed 1 is placed on a suitable position on the work table, and the switch 41 is pressed to energize the electromagnet 3 to fix the bed 1.

Next, the mode of polishing the cutting edge of the tool will be explained with reference to FIGS. 6 to 9.

FIG. 6 shows a mode of polishing the side surface of the cutting edge of a face milling cutter, in which the enclosing nodule 29 is operated to loosen the presser foot 27, the enclosing body is rotated, and its rotation angle is adjusted. The scale 26 is read, and the polishing surface of the rotary grindstone 15 is set along the inclined surface of the cutting edge side of the face milling cutter, and the bundle 29 is operated again to fix the surrounding mesh body 7 via the presser foot 27.

Next, press the forward/reverse switch 42 to start the motor 14 and rotate the grindstone 15, as well as the bundle 2 for moving the grindstone.
2 to polish the side surface of the cutting blade while reciprocating the slide table 11 in the direction of the arrow via the pinion 20 and rack 19.

When polishing is completed, loosen the adjustment bundle 39, loosen the fixed nodule 36, rotate the bundle 29 for the same circumference, rotate the rotary body 7 in the opposite direction, and set the whetstone 15 to the cutting edge. Separate it slightly from the surface.

Next, the milling cutter is rotated to direct the grindstone 15 toward the adjacent blade surface, and the main body 4 is returned to its original inclination, and the grindstone 15 is rotated.
Set it along the cutting edge surface and sharpen the adjacent blade.

In this case, the angle before and after inclination of the main body 4 is read by the scale 40, and the main body 4 is set accurately.

All the cutting edges are polished by repeating the above operations.

Further, the adjustment bundle 30 is rotated in accordance with the angle of the cutting edge, etc. to tilt the entire body together with the main body 4, and the angle of the grindstone is changed to read the scale 40.

FIG. 7 shows a mode in which the lower surface of the cutting blade of a face milling cutter is polished. The surrounding net 7 is rotated to face the lower surface of the face milling cutter, and the bundle 22 is operated to remove the rack 19 and pinion 20.
The lower surface of the cutting blade is polished while reciprocating the grindstone 15 in the direction of the arrow.

FIG. 8 shows a mode of polishing a side milling cutter, and the surrounding mesh body 7
The grindstone 15 is rotated to face the side surface of the cutting blade, and the cutting blade is polished while reciprocating the grindstone 15 in the direction of the arrow.

FIG. 9 shows a mode in which the tip of the cutting blade of a implanted milling cutter is polished. It polishes the blade surface.

In the above, all other operations are the same as in the case shown in FIG.

As described above, in the present invention, the lower part of the main body is rotatably supported on the upper surface of the bed containing an electromagnet, and the surrounding net is rotatably attached to the upper part of the main body, and the surrounding mesh is rotatably mounted on the upper part of the main body. A motor with a rotating grindstone attached to the front end is attached via a slide stand so that it can move freely in a direction perpendicular to the axial direction, and the surrounding net body can be fixed to the main body, and the main body can be fixed to the bed. Since this is a cutting tool polishing device that can be fixed, the bed of this device can be fixed on the work table of a milling machine, etc., and the tool to be polished can be easily operated while the tool to be polished is attached to the main shaft or arbor of the milling machine, etc. By reciprocating the rotating whetstone along the cutting edge, it is possible to grind milling cutters of any shape to precise accuracy.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a partially cutaway front view, FIG. 2 is a partially cutaway side view, FIG. 3 is a partially cutaway plan view, and FIG. 4 is a partially cutaway side view. The figure is a front view of the cutting edge receiver, Figure 5 is its top view, Figure 6 is an explanatory diagram showing the state of polishing the side surface of the cutting blade of the face milling cutter, and Figure 7 is the polishing of the lower surface of the cutting blade of the face milling cutter. FIG. 8 is an explanatory diagram showing the state in which the cutting blade of the side milling cutter is polished, and FIG. 9 is an explanatory diagram showing the state in which the tip of the cutting blade of the implanted milling cutter is polished. 1...Bed, 3...Electromagnet, 7...
... Surrounding body, 11 ... Slide stand, 14.
... Motor 15 ... Rotating grindstone.

Claims (1)

[Claims] 1. The lower part of the main body is rotatably supported on the upper surface of the bed containing an electromagnet, and the lower part of the main body is rotatably mounted on the upper part of the main body as a rotary body, and a sliding base is attached to the front end of the rotary body.
A motor equipped with a rotating whetstone is attached so that it can move freely in a direction perpendicular to the axial direction, and the rotating body can be fixed to the main body, and the main body can be fixed to the bed. Cutting tool polishing equipment.