A device for processing brittle materials

 

(57) Abstract:

The inventive device for processing brittle materials comprises a drive shaft, two metal disk, spacer and nut to compress the disks and spacers to the support collar of the drive shaft. The disks are placed on the drive shaft. For working the periphery of each disk are abrasive cutting tools. Spacer sleeve mounted on the drive shaft between the disks. Facing the spacer sleeve end surface of each disk is located at an angle to the plane perpendicular to the longitudinal axis of the drive shaft. The line of intersection of the end surfaces of each disk are located on opposite sides of the longitudinal axis of the drive shaft and parallel to each other. The cutting tool is made in the form of a coating of carbide powders of alloys based on titanium carbide or tungsten carbide. 2 C. p. F.-ly, 4 Il.

The invention relates to the production of coating materials from natural stone, with average strength and can be used in the manufacture of tools in the form of discs for cutting blocks into shapes, for passirovannym works (removing the peel with substandard parts of blocks), and DL is bastakoti manufacturing tool and repair.

In Fig.1 shows a device for processing brittle materials in the collection, the time of the cutting tool in the monolith marble; Fig.2 - disk with a coating of hard rough material type or VK8 TC; Fig.3 is a diagram of the cutting tool in a monolith with different diameters; Fig.4 is a more detailed diagram of the formation of the moment of force in the shearing gap.

A device for processing brittle materials consists of a steel discs 1 and 2 with a Central cylindrical hole mounted on the drive shaft 3. The disks are pressed against the support collar 4 through a spacer sleeve 5 by a nut 6 and washer 7. Facing the spacer sleeve 5 end surface of each disk 1 and 2 is located at an angle to the plane perpendicular to the longitudinal axis of the drive shaft 3. The line of intersection of the end surfaces of each disk are located on opposite sides of the longitudinal axis of the drive shaft and parallel to each other. The cutting tool is made in the form of a coating 8 of carbide powders of alloys based on titanium carbide or tungsten carbide.

Disks 1 and 2 may have the same outer diameter D that is most suitable for slotting. To further increase productivity is the claim made in the form of a flat Cam with the largest thickness and the smallest b (Fig.2). The width of the groove cut each disk, denoted by S and is approximately equal to C. the Direction of rotation of the shaft of the arrow (Fig. 1). The total width of the processed groove is equal to 2B+C, where C is the thickness of the lintel formed between the grooves that are handled by each disk.

In Fig.3 and 4 made the following notation: L and L1- plunge depth of the tool in the material being processed, ITS1- the depth of the groove, IU is the trace of the plane of greatest shear stresses (shear stresses) in the treated material, the force vector, shearing the jumper, the EC is normal to the line of action of the force . The moment dalyvausiu jumper thickness = equal HEKHEK. The trace of the plane of maximum shearing stress is at an angle of 45aboutto the plane of the highest normal stresses.

In contrast to Fig.1, in Fig.3,4 adopted different diameters, with D > D1. In this design seems to be more advantageous mode of operation, i.e., increased performance and reduced power consumption (when seasoning blocks), the operation of the device occurs at higher peripheral speeds (80-90 m/s), the cooling fluid may be below normal because carbide applied the t 6000-7000 cm2/min and above.

The best performance is obtained when such maximum length of the spacers 5, which is still atlam period with.

A distinctive feature of the proposed design when processing the grooves is that the width of the slit (groove) is always greater than two thicknesses of disks on the size and width of the proposed cut is formed of three zones: two zones at the edges of the groove from the discs and the intermediate zone is the projection arising from the cutting disk and then breaking towards the thinner end of the disk from the force - reaction (Fig.1,3,4).

When processing the grooves are disks of the same diameter D. If the thickness of the lintel with 20-30% of the total thickness of the disks, then ceteris paribus the resulting increase in productivity of the technological process of processing of the groove in the stone also by 20-30%.

In addition to the stone industry, the device can be used for milling slots in cast iron, fiberglass laminate and other fragile materials.

1. DEVICE FOR MACHINING BRITTLE MATERIALS, comprising a drive shaft with a bearing collar placed on the drive shaft two metal disk with a Central cylindrical hole for the passage of blennow on the drive shaft between the disk spacer and located on the threaded section of the drive shaft nut to compress the disks and spacers to the support collar of the drive shaft, characterized in that the facing spacer sleeve end surface of each disk is located at an angle to the plane perpendicular to the longitudinal axis of the drive shaft, and the lines of intersection of the end surfaces of each disk are located on different sides relative to the longitudinal axis of the drive shaft and parallel to each other, while the cutting tool is made in the form of a coating of carbide powders of alloys based on titanium carbide or tungsten carbide.

2. The device under item 1, characterized in that the disks have the same outer diameter.

3. The device under item 1, characterized in that the disks have different outer diameter.

 

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