SU850409A1 - Machine for cutting hard non-metal materials - Google Patents

Description

The invention relates to the processing of solid non-metallic materials and can be used, for example, to cut drilling cores for the purpose of producing duplicates. A machine for cutting cores from rocks is known, which includes a stand, a cutting disk cutter, a conveyor for feeding the core, a clamping spring-loaded device with rollers, the role of gangs PJ. The disadvantage of the known machine is the low productivity of core processing due to the fact that when the depth of cut allowed on the cutting tool, it is necessary to perform several passes when cutting one sample. The closest technical solution to the present invention is a machine for cutting non-metallic, non-metallic materials, including a stand, a number of drive circular saws installed in the plane of the cut, and a feed mechanism for the cut material G2L. A disadvantage of the known technical solution is the considerable time spent on setting up the machine, which reduces its productivity. The purpose of the invention is to increase productivity. The goal is achieved by the fact that a machine for cutting solid nonmetallic materials, including a frame, a series of drive saws installed in the cutting plane, and a feed mechanism for the material being cut, is equipped with a rotary base in the cutting plane, with a row of circular saws mounted on the rotary base. FIG. 1 Shows the machine, obgtsy view; in fig. 2 is a section A-A in FIG. 1 (along the cutting plane); in fig. B in FIG. The machine contains a frame 1 on which a mechanism is installed for fastening and moving the material being processed, search for a movable carriage 2 with a cassette 3 for securing the material being processed 4. The carriage 2 is mounted for movement along the guides 5 and has a kinematic connection with the engine 6 through gear 7, chain transmission 8, drive sprocket 9 and roller chain 10 mounted on the carriage 2, On the base 1 is also installed the base 11 can be rotated around a fixed axis 12, on which electrically mounted odvigateli 13 with mandrels 14 and 15. Before the disc cutters of the first cutter disc downstream of the treated material are set scoring cutting wheels 16 with the motors 17,

The cutting of hard non-metallic materials on the machine is carried out as follows.

The material to be processed 4 is placed in the cassette 3 and secured, after which the movable carriage 2 is retracted to its original position (in FIG. 2, to the extreme left position). By rotating the base 1, the disk milling cutters 15 are installed so that the passage of the last milling cutter completely cuts the material to be processed. After this, electric motors 13 are turned on, which rotate mandrels 14 with disc cutters 15, and electric motor 6, which through gear 7 and chain transmission 8 transfers movement to the drive sprocket 9. Drive sprocket 9 entering the roller chain 10, the depth is 15 20 cutting, mm Productivity, mm / min 2900 1470 870

pushes the movable carriage 2 together with the material 4 to be processed, which is fixed in the cassette 3, to meet the rotational dims of the disk cutters 15 (in FIG. 2

from left to right). When moving the material to be processed 4, each disk milling cutter 15 crashes into the same depth of cut and the cut is completely

in one run. When cutting cores for duplicates, it is necessary to have standard sizes of these duplicates, however, with core diameters above 59 mm, the duplicate width exceeds the standard

the size. In order to get a standard duplicate, in one pass, the I7 motor is equipped with two undercut milling cutters 16, which are mounted on one mandrel with a distance between them equal to the standard width of the duplicate. Thus, duplicate standard sizes are obtained from cores of any diameter in a single pass. Experimental data show that, for example, for cutting cores from Pyroxene-biotite diorites 4iziko-mekh11 {tical properties: Young's modulus 5.0) 4 (1 kg / cm, strength under uniaxial compression

750 kg / cm, abrasiveness 21.4 mg, dynamic strength 8.3, drillability category XI, The most optimal modes are achieved with a diameter of 200 mm disk milling cutters, a width of 1 mm and a rotation speed of 2810 rpm. Under this condition, studies of the performance of the depth of cut are carried out. Research data cited by Hjji in the table, 380 35 40 45 50 25 30 303 238 193 157 128

From Table B1-SHNO, that when the cutting depth is 10 times (from 50 mm to 5i mm) and a constant specific pressure, for example, 0.062, which is permissible under the condition of maximum resistance of disk mills, the productivity increases by 27 times ( from 107 mm / min to 2900 mm / nin) In these modes, for example, a core with a length of I m was sawed in 20 s. The performance of .380 mm / min, shown in the table, slightly exceeds that which is currently obtained on existing machine tools, and a 1 m long core cutting time is 159 s. Productivity must be chosen in such a way that the machine time and time of auxiliary operations for charging the next cassette are approximately equal to each other to ensure the continuity of the process. The auxiliary time required to charge the cassette is about 1 minute. The machine time when cutting a core with a length of I m and a capacity of 870 mm / min is 68.9 s, i.e. about the same with auxiliary time. Thus, the optimal performance should be considered as 870 mm / min, since with continuous modes the machine will be idle after the end of the machine time, waiting for the next core cartridge to be delivered. With lower productivity, on the contrary

A core-charged cassette will be awaiting the end of the typewriter time. In order to ensure optimum cutting conditions, which provide the greatest tool life, with a productivity of 870 mm / min, the cutting depth is 15 mm, i.e. for each core diameter, the number of cutters is necessary to tamp so that the depth of cut for each cutter is about 15 mm,

Claims (2)

1. USSR Author's Certificate No. 252237, cl. In 28D 1/04, 1969. 2. Patent 2721941, cl. B 281) 1/04, published. 03.15.79. (prototype). Buds (rig 3