Band sawing machine for cutting difficult materials
The invention can be used for metal and stone. The machine includes upper and lower curved rails on the working surface of which is wearing a band saw, and drive past. Working surfaces of the curved guides made in the form of hydrostatic bearings. The invention allows to increase the lifting force of the lubricating film between the saw and the guide and to provide effective cooling of the saw. 1 Il. The invention relates to equipment for cutting difficult materials and can be used in Metalworking and enterprises, manufacturing stone.Band saw machines find wide application in various industries for cutting wood, metal, stone, plastics, etc. the Most common use they found in lumbering during the sawing of logs into lumber and thick timber on more subtle.Design of band-sawing machines used in the sawmill industry, set out on page 23 in the book, F. Prokofiev's "Intensification sawing wood frame and band saws". - M.: Forest industry, 1990. - 240 S. saws have leading and ve is tion to other types of machines for sawing materials: small width of cut, the slight roughness of the processed surface, the absence of large forces of inertia.Disadvantages of band-sawing machines: low precision cutting at high feed speeds, low durability saws, large dimensions and metal content.The main advantages of band saw machines is achieved by the fact that the saw is made in the form of a thin endless steel belt moving in one direction at high speed on two supports located above and under the sawn material.The main disadvantages of wood-Mizer sawmill traditional design with a saw pulleys due to the fact that these bearings are rotating pulleys.You must create a sawing machine of a new type, which would have preserved the dignity of band-sawing machines of conventional construction machine must be in the form of thin steel endless belt, and held on two supports positioned above and below the sawn material to move in one direction at high speed), but would not have their disadvantages (the machines should be no pulleys).The above task can be accomplished if the saw pulleys to replace the curved guide, the location is stuffy blanket (Forestry, 2, 1994. - S. 9-10) describes the design sawing, which saw moves along a curved guide rails mounted above and below the sawn material. To reduce friction between the saw and the guide surfaces latter is in the form of aerostatic bearings. When using a sawing with a curved aerostatic guides increases the accuracy of sawing and durability saws, reduced overall dimensions and metal content. Tests sawing with a curved aerostatic guides showed high effectiveness when sawing wood. This machine is used as a prototype.When cutting metal, stone, and other hard-to-machine materials on a band saw are large force of resistance to cutting and it is intense heat. To achieve high rigidity and stability of the saw should be tight with great force and intensely cool. Aerostatic curved guides are not able to provide a greater lift at high tension saws and heat dissipation.The problem to which the invention is directed, is to increase the lifting force of the lubricating film between the saw and crooked is arnosti curved guides made in the form of hydrostatic bearings with a working medium in the form of coolant.Design a sawing is illustrated by a drawing.Band sawing machine includes a band blade 1 is mounted on the upper movable 2 and lower fixed 3 curved rails that stretched through the tensioning mechanism 4. Working surfaces of the curved guides made in the form of hydrostatic bearings. Lubricant-coolant is supplied to the curved guides on gidroprovod 5 and 6. The saw-motor drive includes a friction wheel 7 and 8, is pressed against the lateral surfaces of the saw.Working bandsaw machine as follows. Band saw 1 is put on the top 2 and the movable lower fixed 3 curved guides. Using the tensioning mechanism 4 is the tension of the saw to a predetermined voltage level. On gidroprovod 5 and 6 is supplied under pressure lubricant-coolant, which, coming from the working surface of the curved guides, forms a hydrostatic bearing. Using friction wheels 7 and 8 is driven bandsaw, the material is given and you are sawing.The performance of the curved surfaces of the guides in the form of hydrostatic bearings allows motion is the future in the process of cutting difficult materials.
ClaimsBand sawing machine for cutting difficult materials containing upper and lower curved rails on the working surface of which is wearing a band saw, and drive the latter, characterized in that the working surface of the curved guides made in the form of hydrostatic bearings.
FIELD: different materials cutting off processes and equipment.
SUBSTANCE: each cavity of double-way feed drive hydraulic cylinder is connected with pressure controller. Rod-free cavity of said hydraulic cylinder is connected with throttle having regulator.
EFFECT: simplified design of machine tool.
FIELD: mechanical engineering.
SUBSTANCE: cutting-off machine tool comprises saw frame whose housing is welded from the hollow steel section. The spaces of the section are filled with a polymeric concrete based on the polyester, or epoxy or acrylate resin.
EFFECT: improved vibration insulation.
FIELD: manufacture of machine tools, namely band saws for cutting rolled stock.
SUBSTANCE: pulleys are mounted in strut, in yoke and on table of machine. Pulley arranged on table is controlled-tension pulley; pulley arranged in yoke is working pulley. Pulley arranged in strut in inter-axial space of other pulleys mounted in yoke and on table is drive pulley and it allows provide lowered size of yoke.
EFFECT: enlarged functional capabilities of machine, reduced labor consumption at using it.
1 dwg, 1 ex
FIELD: process engineering.
SUBSTANCE: invention relates to machine building and may be used in cutting tough metals and alloys at belt cutting machines. Proposed machine comprises ribbon saw fitted on drive and driven pulleys, two ribbon belt guides and vibration drive. The latter is arranged on one of the ribbon saw guides to comprises inner-gearing spur gear and support plate arranged to press ribbon saw to gear wheel outer surface. Spring-loaded striker is fitted on axle inside gear wheel to strike on a tooth of said gear wheel located closer to direct line connecting geometrical centers of gear wheel support plate.
EFFECT: reduced cutting forces, higher durability of ribbon saw thanks to lengthwise elastic wave in saw ribbon.
2 cl, 3 dwg
FIELD: process engineering.
SUBSTANCE: invention relates to machine building and is intended for cutting stones, marble, wood, glass or other materials in whatever cutting plane. Proposed machine comprises moving cutting plate, vertical metal frame resting on articulated manipulator to turn about its axis in whatever positions, horizontal support table, adjusting appliances for cutting at different angles, and pattern made up of L-like metal part with top vertical wing connected at straight angle with bottom horizontal wing. Said vertical wing features shape of article to be processed and is perforated over its entire length for fasteners to be inserted in perforations to hold down processed article and, partially, said pattern.
EFFECT: cutting of various materials at various angles and to selected profile.
5 cl, 12 dwg
FIELD: process engineering.
SUBSTANCE: invention relates to hand-held machine. Proposed machine is composed of saw blade or fretsaw and has saw blade lateral guide. Saw blade is supported by lateral guide to turn about lengthwise axis depending upon crosswise and/or twisting forces. Said saw blade can be readjusted.
EFFECT: ruled out saw blade run.
27 cl, 5 dwg
FIELD: machine building.
SUBSTANCE: bandsaw machine contains cutting head assembly and band-saw installed on two discs, one disc is drive, and the second disc is tension one. In the cutting zone the saw cutting part by the guides is rotated strictly in the feed plane. On the cutting head assembly together with the guides the stabilising elements out of metal and caprolon are installed to serve as additional support for the saw.
EFFECT: reduced level of noise and vibration.
SUBSTANCE: invention relates to the saw pulleys. Pulley comprises a rim at outer periphery portion, which is wound on a band saw. Band saw tooth edge portion is provided, formed of a plurality of saw teeth arranged in a row in a circumferential direction and rotatable around rotary shaft. Rim portion includes a supporting surface, edge in contact with a saw in a state where tooth edge portion protrudes from end portion, and a non-contact region between supporting surface and edge and adapted without possibility of contact with band saw.
EFFECT: invention is aimed at improving process and operational characteristics.
7 cl, 5 dwg, 1 tbl
FIELD: methods for sawing for separation of wallboard or board of non-magnetic material from the blank.
SUBSTANCE: the method consists in sawing in the blank longitudinal direction by means of a metal saw blade, having teeth on the front edge. The blade lateral position inside the blank is measured by means of a device for measurement of the distance over the entire sawn blank, a control magnetic force is produced in the lateral direction, it is directed inside the blank in the direction to the blade adjusting the blade position by means of a device for production of magnetic field positioned on one or both sides of the blank. The control magnetic force is calculated on the basis of the value of distance, the information on it provides a device for distance measurement. The magnetic polarity is imparted to the blade, making it in the form of a DC conductor, at least in the point of sawing.
EFFECT: enhanced precision of sawing.
4 cl, 2 dwg
FIELD: devices for sawing of timbers by band saws.
SUBSTANCE: the band sawing machine has a frame with slides moving on guides, the slides are installed for vertical motion, closed saw bands pulled in the area of sawing, band-transport mechanisms rigidly attached to the slides. The saw bands are located in different levels adjusted in height at an angle of 30 deg relative to the longitudinal axis of the log, welded in pairs in the form of figure eight and pulled up on rollers, the tooth points are positioned at a distance of not more than 50 mm from the centres of the rollers pulling the saw.
EFFECT: provided cutting of timbers in the conditions close to planing, which considerably reduces the electric power consumption in machine service, and makes it possible to install two and more saws.