JPH07102496B2 - Blade sharpener - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, a wheel grindstone is rotatably attached to the upper end of a hollow motor output shaft, and the lower end of a hollow inner ruler support is attached to a base plate so as to be swingable via a ball screw. It is related to a sharpening tool that supports and guides machine parts, cutlery, etc. with a taper guide surface with an inner ruler screwed on the upper end and an outer ruler on the outer circumference of the grindstone.

An example of conventional technology will be given. A grindstone is installed on the solid shaft or conduction shaft of the motor, and the ruler on the working surface or the outer frame is supported from the outside of the grindstone.Adjustment setting is made so that the grinding surface angle such as the machine tool blade is matched, the fixed direction on the ruler In addition, it is often necessary to adjust the ruler and grindstone to change the grinding surface of the blade and reduce wear that occur during induction grinding. The operation becomes complicated with the enlargement of equipment such as the use of cooling water for the control of frictional heat and the treatment of shavings.

The effect that there are many gaps between the whetstone operating surface and the ruler is that the ruler that supports and guides the blade is unstable, and there is a high risk of shavings adhering and the blade slipping or bouncing, and the blade on the ruler is rigid. In the work environment of support and guidance, the mental burden on the expert is heavy,
It is difficult to finely adjust the grinding amount and finely adjust the cutting edge, and it is difficult to obtain high precision and high quality sharpness.

According to the present invention, a wheel grindstone is attached to the motor output shaft, the inner ruler and the outer ruler of the outer frame are fitted in the hollow grindstone via a set screw so that they can be moved up and down, and the inner ruler strut has a safety function due to the presence of a ball screw. (EN) Provided is a blade sharpening machine which is ground in a stable state by a working, umbrella-shaped taper guide surface without restriction on a blade supporting position and eliminates the above-mentioned defects of the conventional sharpening machine.

The configuration of the present invention will be described with reference to the drawings. A flat base plate 1 is attached to the bottom of a cylindrical motor cover 18, and a cylindrical outer ruler stand 14 having air holes 16 for cooling is attached to the upper part of the motor cover 18, and the outer ruler stand is attached. A cylindrical outer ruler 13 is screw-fitted to the outer peripheral portion of the upper end of 14 so that the mounting position can be adjusted in the vertical direction, and constitutes an outer wall of the device as a whole, and a motor 17 is attached to the base plate 1 and The motor output shaft 4, which is hollow in the direction perpendicular to the center, has a bearing 5 ² 5 ³
Mounting rotatably through, solid inner ruler upright 2 inserted into the hollow interior of the motor output shaft 4 is rotated in the motor 17 via a bearing 5 5 ¹ but not transmitted, pivotally attached to In addition, the lower end of the inner ruler support 2 is swingably and idly attached to the base plate 1 via a ball screw 3, and the vertical mounting position having an umbrella-shaped tapered guide surface on the upper surface is adjustable. The inner ruler 7 is screwed to the upper end of the inner ruler strut 2, and has a taper grinding surface of the same inclination continuous to the umbrella-shaped taper guide surface of the inner ruler 7 and a cooling vent hole 12 on the grinding surface. A structure in which a wheel grindstone 11 is attached to the upper end of the motor output shaft 4 so as to transmit the rotation of a motor 17 through a coupler 6 having a cylindrical outer peripheral portion provided with cooling blades 10.

Operation of the present invention. As described in the above-mentioned configuration, by operating the inner ruler 7 and the outer ruler 13 of the umbrella-shaped taper guide surface, the counterclockwise set screw 8
8 ¹ works, inner ruler 7 outer ruler 13 moves to the upper or lower position, the grinding amount of the right rotating grindstone 11 is adjusted, and the set screw 9 handle 15 actuates the operation of the set screw 8 8 ^1. To be done.

At the time of grinding, a ventilation hole 16 for cooling is provided from a cooling hole 16 provided on an outer peripheral portion of a cylindrical outer ruler base 14 through a connector 6 provided with cooling blades 10 on a rotary motor output shaft 4. In addition to the cooling function of the wheel grindstone 11 that it has, a safety function such as a reverse screw of the intervening ball screw 3 set screw 8 8 ¹ works on the base plate 1 and the inner ruler support 2.

Example of the present invention. The flat plate 1 is attached to the bottom of the cylindrical motor cover 18, the cylindrical outer ruler base 14 having the cooling holes 16 on the outer periphery is attached to the upper part of the motor cover 18, and the outer ruler stand is further attached. the outer frame position of the grinding wheel 11 in the intervention set screws ⁸¹ to the upper outer peripheral portion 14, outside ruler 13 adjustably screw fitted in the vertical direction, the handle 15 is provided.

The motor 17 is attached to the base plate 1, and the motor output shaft 4 which is hollow in the center of the base plate 1 in the vertical direction is rotatably fitted through bearings 5 ² 5 ³ and the blade 10 is provided at the end. A ring-shaped grindstone 11 is attached via a connector 6, and the grindstone 11 is provided with a ventilation hole 12 for cooling. The motor hollow output shaft 4, the bearing 5 5 ¹ of inserting the inner ruler upright 2 of a solid in intervening, tower 2 lower for inner ruler swingable by operation of the ball screw 3 the base plate 1, the accident In this case, it is mounted so that it can rotate freely, and the upper end is mounted with an internal ruler 7 in the hollow position of the grindstone 11 via a set screw 8 so as to be vertically adjustable, and the action of the set screw 8 is controlled by a set screw 9. Inner ruler 7 Grinding wheel 11 Outer ruler 13 has an umbrella-shaped taper guide surface with a small gap between tools, and further, the grinding wheel 11 turns and the set screw 8 8 ¹ ball screw 3 is provided with a counterclockwise screw.

Effect of the present invention. As described above, the grinding amount of the grindstone 11 is adjusted by the operation of the inner ruler 7 and the outer ruler 13, and the inner ruler 7 with less vibration at the center point of the umbrella-shaped taper guide surface supports the blade and moves the grindstone radially. Grinded at 11.

In the event of an accident such as impact on the blade sharpener during work, foreign matter being caught in the gap between the tapered grinding surfaces, or loosening of the screw, the vibration of the inner ruler prop 2 is transmitted by the centrifugal action of the grindstone 11 and the ball screw 3 intervenes. in the idle versatile or inner ruler upright 2 to the vibration, together with the inner ruler 7 outside ruler 13 elevated impact relief at hand thread operating set screws 8 8 ^1, support cutlery Ru floating from the grindstone 11, or super Safety functions such as rotation stop of the motor 17 are activated by the load.

As described above, the weight of the tool is reduced, and the blade moved from the inner ruler 7 to the grindstone 11 while directly looking at the grinding position in the wide field of view of the umbrella-shaped taper guide surface is stable with the function of the cooling tool. Safety is maintained, and the amount of grinding is finely adjusted by extremely simple operation, the blade edge is supported and guided at a delicate angle, and a high-precision and high-quality finished surface can be obtained.

[Brief description of drawings]

FIG. 1 is a plan view of the present invention. FIG. 2 is a front view of the present invention and is a partial sectional view. Explanation of reference numerals 1 ... Base plate 2 ... Inner ruler support 3 ... Ball screw 4 ... Motor output shaft 5, 5 ¹ , 5 ² , 5 ³ ... Bearing 6 ... Coupler 7 ... Inner ruler 8・ 8 ¹ …… Assembly screw 9 …… Set screw 10 …… Blade 11 …… Grinding stone 12 …… Ventilation hole 13 …… Outer ruler 14 …… Outer ruler base 15 …… Handle 16 …… Void 17 …… Motor 18 ...... Motor cover

Claims (1)

[Claims] 1. A flat base plate 1 is attached to the bottom of a cylindrical motor cover 18, and a cylindrical outer ruler base 14 having air holes 16 for cooling is attached to the upper part of the motor cover 18. A cylindrical outer ruler 13 is screw-fitted to the outer peripheral portion of the upper end of the outer ruler base 14 so that the mounting position can be adjusted in the vertical direction, and constitutes an outer wall of the device as a whole, and a motor 17 is attached to the base plate 1, and The motor output shaft 4, which is hollow in the vertical direction in the center of the base plate 1, has a bearing 5 ² 5 ³
Mounting rotatably through, solid inner ruler upright 2 inserted into the hollow interior of the motor output shaft 4 is rotated in the motor 17 via a bearing 5 5 ¹ but not transmitted, pivotally attached to In addition, the lower end of the inner ruler support 2 is swingably and idly attached to the base plate 1 via a ball screw 3, and the vertical mounting position having an umbrella-shaped tapered guide surface on the upper surface is adjustable. The inner ruler 7 is screwed to the upper end of the inner ruler strut 2, and has a taper grinding surface of the same inclination continuous to the umbrella-shaped taper guide surface of the inner ruler 7 and a cooling vent hole 12 on the grinding surface. A blade having a structure in which a wheel grindstone 11 is attached to the upper end of the motor output shaft 4 via a coupler 6 having a cylindrical outer peripheral portion provided with cooling blades 10 so that the rotation of a motor 17 is transmitted. Sharpening machine.