45results about How to "Improve cutting conditions" patented technology

An apparatus for manufacturing seeds for polycrystalline silicon manufacture by cutting a silicon rod in an axial direction into at least one plate-like member, and cutting at least one of the silicon plate-like member lengthwise into seeds that are square in cross section, that includes a table which mounts the silicon rod or at least one of the plate-like member, a pair of end-face supporting members which support the silicon rod or at least one of the plate-like member by pressing both end faces thereof in the axial direction, and a cutting blade which cuts the silicon rod or at least one of the plate-like member in the axial direction, in addition the end-face supporting members includes comb-like grooves that allow the cutting blade to pass through.

A strong high performance twist drill which aims at providing a high performance twist drill to solve the existing problems effectively. The twist drill can reduce the change in value of the rake angle, increase the value of the rake angle especially at the position approaching the drill core, and improve the cutting condition. The twist drill comprises a shank and a working part. Said working part comprises a cutting part and a guiding part. Said cutting part includes a rake face, a relief face, a main cutting edge and a chisel edge; said guiding part includes rear groove edges and flutes; wherein, said main cutting edge tilts towards the drill core from outside to inside; the angle between the main cutting edge and the center vertical line at the cross section is in the range of 3-25°; said main cutting edge intersects with back groove face at the narrow chisel edge; the length of the narrow chisel edge is in the range of 0.03-0.5 mm; and the rake angle at the drill core is positive.

The invention discloses an ultrasonic vibration pneumatic drill based on rotary type wireless electric power transmission. The ultrasonic vibration pneumatic drill comprises a rotary wireless electric power transmission assembly, an ultrasonic transduction assembly, an amplitude-change pole, a spring chuck assembly and a connecting assembly, wherein the rotary wireless electric power transmission assembly is used for realizing electric power transmission between two mechanisms rotating oppositely and comprises a wireless electric power transmission primary unit and a wireless electric power transmission secondary unit; the ultrasonic transduction assembly is used for converting ultrasonic-frequency electric signals into ultrasonic-frequency mechanical vibration; the ultrasonic vibration amplitude-change pole is used for amplifying small-amplitude mechanical vibration into large-amplitude mechanical vibration to meet requirements of ultrasonic vibration drilling machining; the spring chuck assembly is used for clamping tools; the connecting assembly is used for connecting ultrasonic vibration drilling parts with the rear end of the pneumatic drill so as to realize power transfer and electric power transmission. Ultrasonic vibration is applied to the traditional drilling machining process, and a combined machining mode of coupling of ultrasonic vibration and traditional drilling motion is formed, so that machining quality is effectively improved and machining efficiency is improved.

Method and an apparatus for setting up and plunging a skiving tool with respect to a work piece, on which a rotational-symmetric, periodic structure is to be manufactured with application of the skiving tool, wherein a radial feed motion in the direction of the work piece is performed, so to bring the skiving tool in contact with the work piece for the first time, and the skiving tool is plunged from the moment of the first contact down to a predetermined depth in a radial plunging movement, before the proper skiving of the rotation-symmetric, periodic structure is carried out.

The invention relates to a method for reinforcing a cutting edge of a micro-cutting tool based on critical cutting thickness. The method comprises the following steps of dividing a cutting edge area of the micro-cutting tool into a main edge outer edge area, an intermediate transitional area and a near transverse edge area, respectively determining and trimming the respective cutting-edge radii of the main edge outer edge area, the intermediate transitional area and the near transverse edge area according to the critical cutting thicknesses of different processed materials so as to reinforce the strength of the cutting edge and optimize the cutting performance. The method comprises the following steps: (1) determining the critical cutting thickness of a processed material through orthogonal cutting experiment or cutting finite element simulation; (2) dividing the cutting edge area of the micro-cutting tool into the main edge outer edge area, the intermediate transitional area and the near transverse edge area; (3) respectively determining respective cutting edge radii of the three areas according to the critical cutting thickness of the processed material; (4) trimming the cutting edges of the main edge outer edge area, the intermediate transitional area and the near transverse edge area in a micro-scale manner by utilizing a focus ion beam, and gradually trimming the cutting edge to the determined cutting edge radius. The method is feasible, the strength of the cutting edge is improved, the cutting state is improved, the service life of the cutting tool is prolonged, and the method is applicable to all micro-cutting tools.

The invention discloses a composite deformation type high-strength sawing wire and a manufacturing method thereof. The sawing wire is of a structure that edge-folding deformation exists in a single plane and bending deformation exists in three-dimensional space. In the single plane, the sawing wire is bent into a wavy structure, and crest heights of a composite deformed wire are identical within the spatial range. The composite deformation type high-strength sawing wire and the manufacturing method thereof solve the problems existing in traditional multi-wire cutting. The sawing wire has a periodical deformation feature, multiple inner spatial structures are formed by the deformed wire in each period, and then more mortar can be brought in when the sawing wire is used; meanwhile, auxiliary blades formed by edge-folding and bending deformation can play a role in chip removal, and the sawing wire is especially good at cutting hard and brittle materials such as solar silicon wafers, quartz, silicon ingots, ceramics, sapphire, gallium arsenide and stone.

The invention relates to a slitting mechanism, and belongs to the technical field of cutting. The mechanism comprises a workbench, two guide rods are arranged on the workbench, and are vertically arranged left and right in parallel, a mounting plate sliding up and down is arranged on the workbench horizontally, guide sleeves in sliding fit with the guide rods are arranged at the two ends of the mounting plate, each guide rod is arranged in the corresponding guide sleeve in a penetrating manner, at least two cutting knives are arranged at the position, between the two guide rods, of the bottomof the mounting plate, a groove used for buffering is formed in the position, corresponding to cutting position of each cutting knife, of the workbench. Through the slitting mechanism, the structure is simple, during design, under the action of the cutting knives, a large amount of old circuit boards can be easily treated, time and labor are saved, operation is safe and reliable, under design of amaterial returning plate, the circuit boards can be effectively prevented from bouncing everywhere during cutting, the old circuit boards can be prevented from being clamped on the cutting knives, and a better cutting condition is created for the cutting knives.

The invention discloses a double vertical clamping structure for finely adjusting a double-worm-wheel fly cutter radially. A center hole which faces the active end and is concentric with a rotating central line of a cutter bar is formed in the passive end of the cutter bar, two parallel two-section stepped concentric holes for mounting, clamping and finely adjusting the fly cutter are radially formed along the rotating central line of the cutter bar, large holes of the two-section stepped concentric holes are cylindrical holes, small holes of the two-section stepped concentric holes are screwthrough holes, and the center distance between the two-section stepped concentric holes is the axial tooth pitch of a working worm; two sections of threads which are the same in screwing direction anddifferent in screw pitch are arranged on a locking screw and correspondingly connected with the screw through holes and a screw hole formed in a fly cutter round straight handle, so that the fly cutter is never loosened after being finely adjusted and clamped in the radial direction of the cutter bar; and a positioning clamping mechanism is arranged in the center hole, the oblique end faces of the opposite ends of a positioning jacking rod slide onto the obliquely-beveled plane of the fly cutter round straight handle to form close face contact under the combined action of the locking screw and a force applying component, and the fly cutter is fastened in the corresponding cylindrical hole and located at the correct position. The radial fine-adjusting and positioning double vertical clamping technical scheme is suitable for high-precision and large-cutting-force rolling cutting of multi-head worm wheels.

The invention relates to the technical field of machining of mechanical parts, in particular to a cycloid machining method for a large-allowance casting blank. A datum plane of a casting is determined, the blank allowance thickness of the surface of the casting is determined, a cutter is fed in a spiral cycloid manner according to the blank allowance, and the blank is milled by the cutter in a down-milling manner. When the milling cutter cuts into the workpiece blank, the cutter point cuts into the casting blank, the shearing force generated when the cutter point cuts into the casting blank is obviously smaller than the force generated in the mode that the middle section of a cutting edge cuts into the casting blank, and the impact load in the cutting process is also relatively small. According to the method, the cutter path can be determined, the cutter moves circularly and swings in the direction of a straight line or a circle or the edge of a part, materials of the to-be-cut part in a blank workpiece are divided into cutting layers with the uniform thicknesses in the direction of being perpendicular to the swing direction of the cutter, the cutting layers are cut off layer by layer in the swing process of the cutter, and the phenomena that due to the fact that the blank is uneven, large fluctuation of the cutting force is generated, and vibration in the machining process and the loss of the cutter are generated are avoided.

The invention discloses a machining method of a stainless steel part an aluminum honeycomb core. The method comprises the following steps that 1) a part body is mounted on a machine tool workbench through a positioning clamp, the lower surface of the part body is fitted to the upper surface of the positioning clamp, and the fitted plane is taken as a clamping positioning surface; (2) in the process of numerical control machining of the part body, different milling cutters are used for milling different materials in the part body layer by layer, and the milling cutters all carry out cycloid milling; and 3) after milling is completed, burrs are removed, and machining is completed. According to the method, by means of layered machining, it can be guaranteed that the different cutters are usedfor the different materials in a sandwich structure during part machining, and the machining quality is guaranteed; under the condition that fluid cooling liquid cannot be used, cuttings can be automatically taken away in a cycloid milling mode, cooling is sufficient, heat dissipation is guaranteed, conditions are improved, deflection and flutter of the cutters can be reduced, the cutting force is stable, and the service life of the tools is prolonged; and due to effective diffusion of cutting heat, the machining quality and efficiency of parts are improved.