RU50343U1 - GRINDING MACHINE FOR KITCHEN AND KNITTING KNIVES - Google Patents

Abstract

The tool-grinding machine for kitchen and military knives is metalworking for sharpening a blade tool. The technical result is an increase in the quality of sharpening and the expansion of technological capabilities.

To do this, a spindle 5 is mounted on the bed 1 using bearings 7 and kinematically connected to one end of the drive shaft 2, the polishing wheel 3 is mounted on the other end, grinding wheels 8 are mounted on the ends of the shaft 6 of the spindle 5, the knives mounting unit is made in the form of a magnetic holder 15 with adjusting screws 14 and 17 for installation in the desired position, in addition, the machine is equipped with a device 19 for straightening knives in the form of two pairs of rollers 22, installed with the possibility of free rotation on the axes 21.

Description

The inventive device relates to metalworking and can be used for sharpening a blade tool, in particular, slaughter and kitchen knives.

A well-known grinding machine model ZB633 (S. A. Popov, L. G. Dibner and others. "Grinding parts and sharpening a cutting tool" M., "Higher School", 1975, p. 178), the grinding head of which It is a two-speed electric motor, the shaft of which is a machine spindle mounted on two bearing bearings. Near the left grinding wheel, a hand-mounted is installed, having on one side a flat platform for processing flat parts, and on the other a prismatic surface for processing curved surfaces of parts. The position of the handcuff in height and in relation to the grinding wheel is adjusted using the bracket and the grooves in the bracket and the handle. At the right grinding wheel, an end table for sharpening cutters is mounted with the possibility of rotation by a rear angle of up to 20 ° and moving it to the grinding wheel both on the end and on the periphery.

The design of the handrail and the end table do not provide high-quality sharpening of knives at a given angle.

The closest in technical essence and purpose to the claimed device is “Tool-grinding device Y2-FYAT (passport Y2-FYAT-03. PS for“ tool-grinding ”, St. Petersburg) consisting of a drive, grinding wheels mounted on the drive shaft, baths for water casing. For the installation of knives and grinding wheels mounted brackets rotated by an angle of 15 ° ± 5 ° with a support washer and a locking screw.

The design of the swivel arms does not provide the exact position of the knife during sharpening, which does not allow to sharpen the knife at a given angle.

The technical task of the claimed device is to improve the quality of sharpening by ensuring the exact geometry of the sharpened knife, as well as expanding the technological capabilities of the device.

The specified technical result is achieved by the fact that the known machine, including the bed, with the drive located on it, grinding wheels, the casing, the knives installation unit, is equipped with an additional drive pulley, the shaft of which is installed on the bed with two bearing bearings and kinematically connected to one of the ends of the drive shaft, with a polishing wheel mounted on the other end of the drive shaft, and grinding wheels mounted on the ends of the additional drive

a pulley, while the installation site of the knives is made in the form of a magnetic holder fixed with the ability to adjust and fix the angular position on the bracket mounted to move along and across the end plane of the grinding wheel along a guide rigidly fixed to the bed, in addition, on the front upper part the casing is equipped with a device for straightening knives, consisting of at least two pairs of rollers mounted with the possibility of free rotation, on the axes fixed in the housing, and the end flat ti grinding wheels tucked under an angle of not less than 5 °.

The magnetic holder of the knife mounting unit holds the blade of the knife at a predetermined angle during sharpening, which allows you to accurately perform the geometry of the knife, and the ability to edit and polish the knives on the machine improves the quality of sharpening and the duration of the knife without regrinding.

Figure 1 presents a General view of the machine, figure 2 is also a top view, figure 3 is also a front view, figure 4 is a dressing unit grinding wheels.

The machine consists of a bed 1 and a drive 2 located on it, at one end of the shaft of which a polishing wheel 3 is installed, and the other end of the shaft with a belt drive 4 is connected to the spindle 5, the shaft 6 of which is mounted on the bed 1 using bearing bearings 7. At the ends of the shaft 6 grinding wheels 8 are installed, the end planes of which are tilted at an angle 5. Under the grinding wheels 8 there are water baths 9. All

rotating parts of the machine: drive 2, spindle 5 with a shaft 6 and a belt drive 4, are closed by a casing 10. On the frame 1 near the grinding wheels 8 there is a guide 11 on which a bracket 12 with a hole 13 is installed, locked in position by a screw 14. On the bracket 12, a magnetic holder 15 for the knife 16 is fixed with an adjusting screw 17 for changing the angular position of the holder depending on the angle of sharpening of the knife. The knife sharpening angle is determined on a scale of 18.

On the upper front part of the casing 10, a device for straightening knives 19 is installed, consisting of a housing 20 in which axles 21 are fixed, hl of which two pairs of rollers 22 are freely rotatable. The straightening device is closed by a casing 23.

The machine operates as follows: the adjusting screw 17 on a scale of 18 sets the angular position of the magnetic holder 15, corresponding to the angle of sharpening of the knife 16. The bracket 12 with the screw 14 along the guide 11 is moved to the grinding wheel 8 until it touches lightly and locked with the screw 14. Knife 16 set between the grinding wheel 8 and the magnetic holder 15 and, pulling the knife back and forth, sharpen one side of the knife, while in the bath 9 must be water so that the grinding wheel 8 touches the water or was slightly submerged in input. Similarly, the second side of the knife is ground on another grinding wheel.

After sharpening the knife, the knife is edited. Why knife 16 with a slight pressure is pulled back and forth between the rollers 22. After editing, the blade of the knife 16 is polished on the polishing wheel 3.

As the grinding wheel 8 wears out, the bracket 12 along the guide 11 is moved to the grinding wheel, fixed with a screw 14, and the grinding wheel is edited with a diamond pencil (not shown in the drawing) through the hole 13 in the bracket 12.

The test results of the experimental sample showed that the proposed design of the knives installation unit with a magnetic holder reliably holds the knife blade during sharpening at a given angle, and an additional pulley provided stationary installation of the polishing wheel, which allows polishing without changing the grinding wheel to the polishing one.

Claims (3)

1. Sharpening machine for kitchen and slaughter knives, including a bed with a drive located on it, grinding wheels, a casing, a knives installation unit, characterized in that it is equipped with an additional drive pulley, the shaft of which is mounted on the bed with two bearing supports and kinematically connected with one of the ends of the drive shaft, a polishing wheel mounted on the other end of the drive shaft, and grinding wheels are installed at the ends of the additional drive pulley, while the installation site of the knives is made in the form of magnetic zhatelya fixed angular position with the possibility of adjusting and fixing the bracket, installed movably along and across the end plane of the grinding wheel along the rail is rigidly fixed to the frame, in addition, on the front upper portion of the casing is set a device for straightening blades. 2. The machine according to claim 1, characterized in that the device for straightening knives consists of at least two pairs of rollers mounted with the possibility of free rotation on the axes fixed in the housing. 3. The machine according to claim 1, characterized in that the end surfaces of the grinding wheels are tucked at an angle of at least 5 °.