JPH071241Y2 - Tabletop drill sander - Google Patents

Description

[Detailed Description of the Invention] (Industrial application field) This invention is a tabletop drill that can easily grind the tip flank of a drill into a conical shape when polishing the cutting edge of the drill without complicated operations or setup. It concerns a sander.

(Prior Art) Conventionally, when a drill chuck with a drill set is simply moved two-dimensionally when polishing the drill cutting edge, the flank of the drill tip becomes flat, or even a conical drill with no second angle is used. It had the drawback of being polished.

(Problems to be solved by the invention) In addition to these drawbacks, the above-mentioned mechanism has a problem that the drill chuck becomes large in size, the structure becomes complicated, and the setup change takes time. Therefore, the purpose of the drill polishing machine of the present invention is to eliminate these drawbacks and to allow the tip of a drill to be easily and accurately ground into a conical shape.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides (1) a tabletop drill grinding machine main body in which a motor and a grinding wheel are mounted so that they can be moved to the left, right, front and back, and the lower part of the grinding wheel is provided. The L-shaped stand of the center axis support arm of the drill chuck body is rotatably mounted in the front and rear, the drill blade polishing angle is displayed on the periphery of the body, and the adjusting lever is provided at the bottom. A polishing operation handle is projected and fixed in the direction of the center line that intersects the central axis at 25 degrees, and a drill V-shaped support is attached to this intermediate part and a drill stopper near the tip of the handle. A frame-type adjuster is interposed between them, and a left-right movement adjusting lever is installed on this.

(2) A center line is formed on the chuck-side inner surface of the drill stopper attached to the operating handle of this sander in a direction perpendicular to the handle axis direction, and intersects at right angles with the center line of the stopper-side end edge of the drill socket. The scale lines are engraved in two places on the left and right, and the half of the circumference of the drill is polished and the chuck is loosened and the drill is rotated 180 degrees to align the scale lines and the center line of the socket alternately. A drill set device that uses a mark to fix the drill and to accurately grind the other half.

(Operation) The tabletop drill polishing machine of the present invention configured as described above is
In order to make the drill chuck lightweight and compact, the drill tip is fixed by sandwiching it with a V-shaped block and a clamp. The V-type support in the middle part of the polishing operation handle and the drill stopper near the tip are used to secure the entire drill. Supports at 3 points and slightly lowers the drill center line from the chuck body center axis (chuck swing center line) to form a second angle on the cutting edge. The drill center line is 25 degrees from the chuck body center axis (chuck swing center line). The conical flank of the drill can be formed by tilting and turning.
Depending on the diameter of the drill to be further abraded, the chuck swing center line will be adjusted.
In the case of a large diameter, it can be set by adjusting and moving the chuck body in the direction away from the body.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, a tabletop drill grinding machine body (A) in which a motor (M) and a grinding wheel (G) are movably adjustable. A drill chuck body (1) is provided on the lower part of the grindstone (G) side.
The L-shaped stand (4) of the supporting arm (3) of the central shaft (2) is attached to the cylindrical pedestal (5) so as to be rotatable back and forth, and the drill (D) cutting edge polishing angle is provided on the periphery of the pedestal (5). A drill (6) is provided with an adjusting lever at the bottom, a V-shaped block (8) is formed at the tip of the drill chuck body (1), and a drill chuck is constructed by a clamp and a clamp bolt (9). Further, a polishing operation handle (10) is projectingly fixed to the drill chuck body (1) in the direction of the center line intersecting the central axis (2) at 25 degrees, and a V shape of the drill (D) is formed in the middle portion. A support (11) and a drill stopper (12) near the tip of the handle (10) are attached, and a frame type adjuster (13) is provided between the chuck body (1) and the central shaft (2).
And a left-right movement adjusting lever (14) is installed.

Further, a center line (C) is engraved on the inner surface of the drill stopper (12) in a direction perpendicular to the axis of the polishing operation handle (10), and the above-mentioned peripheral edge of the end of the drill socket (15) on the drill stopper (12) side is formed. Scale lines (X) and (Y) are engraved at two places on the left and right that intersect the center line (C) at a right angle, and the chuck (1) is loosened after polishing the half side of the circumference of the drill (D). By 180 degrees, align the scale line and center line of the socket with (Y) and (X) this time, and fix the drill, and the remaining half side can be accurately ground. Is.

(Effect of the Invention) Since the present invention is configured as described above, the following effects can be obtained.

There is no need for preliminary setup or complicated operations. First, set the center distance, cutting edge angle, etc. according to the size and shape of the drill, and then use the turning swing operation of the polishing operation handle (10) to set the second angle. It is possible to accurately shape and polish the conical flank face that has been cut.

In addition, the drill setting device engraved in the socket of the drill allows the blade edge to be rotated 180 degrees accurately and easily, so that accurate polishing finish is possible.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, FIG. 1 is a perspective view of the whole surface, FIG. 2 is a plan view of a chuck body and an operating handle,
3 is a left side view of FIG. 2, FIG. 4 is an exploded perspective view of an adjuster portion, and FIG. 5 shows a drill stopper and a drill setting device. 1 …… Drill chuck body 2 …… Chuck center axis, 3 …… Center axis support arm 4 …… L-shaped stand, 5 …… Cylinder pedestal 6 …… Angle display scale, 7 …… Angle adjustment lever 8 …… V Shape block 9 …… Clamp and clamp bolt 10 …… Grinding operation handle, 11 …… V type support 12 …… Drill stopper, 13 …… Frame type adjuster 14 …… Left and right movement adjustment lever 15 …… Drill socket A …… Desktop Drill grinding machine body M …… Motor, G …… Whetstone C …… Drill stopper center line D …… Drill X, Y …… Drill socket scale line

Claims (2)

[Scope of utility model registration request] 1. A tabletop drill grinder main body in which a motor and a grindstone for polishing are moved to the left and right and back and back is adjustable, and an L-shaped stand of a center axis supporting arm of the drill chuck body is mounted on the pedestal at the lower part of the grindstone side. It is rotatably mounted, the drill blade edge polishing angle is displayed on the periphery of the pedestal, and an adjusting lever is provided on the lower part.
The polishing operation handle is projected and fixed in the direction of the center line that intersects with each other, a drill V-shaped support is attached to the middle part, and a drill stopper is attached near the handle tip. Via a shape adjuster,
It is made by installing a left and right movement adjustment lever on this, turning the polishing operation handle around the central axis of the chuck body,
A tabletop drill grinder characterized by conical grinding of the drill cutting edge. 2. A desk drill grinding machine according to claim 1,
A center line is formed on the chuck-side inner surface of the drill stopper attached to the polishing operation handle in a direction perpendicular to the handle axial direction, and at two locations on the left and right sides that intersect the center line of the stopper socket terminal end at a right angle. Engraved scale lines, loosen the chuck after polishing the half side of the drill circumference and rotate the drill 180 degrees, fix the drill by alternately aligning the scale line and the center line of the socket, A drill setting device with a mark that enables accurate polishing on the other half side.