29results about How to "Easy chip removal" patented technology

The utility model relates to lathe technical field provides a good micro - numerical control lathe of chip removal, solve the problem that lathe horizontal work surface falls the chip not easy clearance and the chip falls into the guide rail and influences the problem of tool rest feed. Scheme, the work surface of bed body is inclined surface, the lathe still includes: X axle assembly, include: a) X axle bottom plate, set up on the work surface of bed body, have X axle guide rail on it, b) workbench, slide connection in X axle guide rail, its upper portion is fixed with tool rest, c) first linear drive assembly, drive workbench and move along X axle direction, d) X axle protection assembly, install in workbench X axle direction both ends, protect X axle guide rail, Z axle assembly, include: a) Z axle guide rail, set up in the work surface of bed body, X axle bottom plate bottom slide connection in Z axle guide rail, b) second linear drive assembly, drive X axle bottom plate and move along Z axle direction, c) Z axle protection assembly, install in X axle bottom plate Z axle direction both ends, be used for protecting Z axle guide rail.

This utility model discloses a laser cutting and engraving stage, belonging to the field of laser cutting technology. The laser cutting and engraving stage includes a frame and multiple sets of elongated support plates. Each support plate has a first working surface and a second working surface. The frame has a working area, and multiple equidistant limiting grooves are formed on the inner walls of both sides of the working area. The two ends of the support plates extend into the limiting grooves. When the first working surface is horizontal, the support plate is in a first working state; when the second working surface is horizontal, the support plate is in a second working state. This utility model, by creating limiting grooves within the frame and extending the two ends of the support plates into these grooves, and by having both a first and a second working surface, allows for switching between honeycomb and blade-type stages through the switching between the first and second working surfaces. This eliminates the need for additional stage types, reduces operating costs, minimizes space occupation, and improves performance.

The utility model discloses a kind of concave composite chamfering cutter, belong to machining tool design technical field, the composite chamfering cutter includes two center symmetrical cutter teeth, cutter tooth is composed of back rake face, oblique front and cylindrical arc surface, wherein: the included angle range of back rake face and vertical face is 35 ° to 50 °, the included angle range of oblique front and vertical face is 8 ° to 15 °, cylindrical arc surface is the extension of cylindrical cutter body, the top end of cutter tooth is also provided with tooth end face, the included angle range of tooth end face and horizontal plane is 3 ° to 8 °. Compared with prior art, the composite chamfering cutter carries out mirror image processing to the two blades of tool, and designs specific cutter tooth angle, and the oblique front of specific angle can effectively increase the strength of tool, facilitate chip removal, and the back rake face of specific degree can reduce the wear of cutting edge while reducing vibration;The stability and service life of tool are improved, and the overall tool can effectively reduce the vibration interference in the machining process during the machining process, to ensure the stability and consistency of machining quality.

The utility model discloses a double main shaft three knife tower numerical control machine tool, including the machine base that is equipped with three parallel X axle guide rail. Two independent control's knife tower mechanism is equipped on first X axle guide rail, can cooperate or independent operation, the coaxial opposite arrangement of first main shaft mechanism and movable second main shaft mechanism is equipped on second X axle guide rail, realizes workpiece automatic butt joint and shift, third X axle guide rail is equipped with third knife tower mechanism. The machine tool passes through the innovative layout of three knife towers and double main shaft, supports multiple high -efficient processing mode: two knife towers can synchronize and process one end of a workpiece, and third knife tower processes the other end or another workpiece, also can realize workpiece automatic shift to another main shaft after one end processing, and is continued processing the other end by any one or two knife towers. Therefore, on one hand can greatly improve production efficiency and equipment utilization, on the other hand eliminates the manual turn -around clamping link, positioning error and downtime are reduced significantly, is suitable for the high -speed precision machining of complex parts.

The utility model discloses an end mill for processing a flange channel, which belongs to the technical field of cutter design, the end mill is symmetrically provided with four cutting edges, the angle range of the front angle of each cutting edge is 6-8 degrees, two rear angles are continuously arranged on the side edge of each cutting edge, and the two rear angles are respectively a first rear angle and a second rear angle. The angle range of the first rear angle is 8-10 degrees, the angle range of the second rear angle is 18-23 degrees, a tool nose protection angle is arranged at a tool nose of the cutting edge, the core diameter range of the cutting edge is 5-7 cm, and the angle range of the helical angle of the cutting edge is 37-39 degrees. Compared with a standard end mill, according to the structure, the four edges are subjected to equal grinding, the front angles are increased so as to facilitate chip removal, the core diameter of the cutter is increased, the torque resistance of the cutter is improved, the side edges are changed into two rear angles from an original single rear angle so as to improve the stability of the cutter, and the service life of the cutter is prolonged. In addition, rough machining and finish machining of the end mill can be completed at a time, and the cutter does not need to be replaced.

The invention relates to the technical field of ceramic matrix composite part machining, in particular to a ceramic matrix composite flow guide plate machining method which comprises the steps that a part blank of a fan-shaped section structure is machined, a central positioning hole, a fan-shaped section bevel edge, an inner arc edge and an outer arc edge are roughly machined through long-pulse laser, and then the fan-shaped section bevel edge, the inner arc edge and the outer arc edge are machined; performing finish machining on the outer molded surface, the bevel edge of the fan-shaped section, the inner arc edge, the outer arc edge, the inner molded surface and the central positioning hole by adopting ultrasonic vibration auxiliary milling equipment, and finally performing laser machining on the air film hole; and the whole ring blank is machined, ultrasonic vibration auxiliary milling equipment is firstly adopted for machining, then laser machining is conducted on the air film hole, then long-pulse laser is adopted for cutting the whole ring blank into a part blank, and finally the ultrasonic vibration auxiliary milling equipment is adopted for conducting finish machining on the part blank. According to the method, long pulse laser cutting and ultrasonic vibration auxiliary milling machining are combined, and the air film holes are machined through laser, so that the machining stability, efficiency, reliability and quality of the ceramic-based composite material flow guide plate can be improved.

This invention relates to the field of coating technology, and discloses a composite CVD coating, its preparation method, and its application. The coating comprises, from the inside out, a base layer, a first spacer layer, a first composite layer, and a second composite layer, arranged sequentially on the surface of a substrate. The first composite layer consists of a transition layer and a second spacer layer; the second composite layer consists of a third spacer layer and a surface layer; both the base layer and the surface layer are TiN; the first, second, and third spacers are MT-TiCN, κ-Al₂O₃, and TiC, respectively; the transition layer includes HT-TiCN and TiCO. The coating provided by this invention has good adhesion, strong resistance to crack propagation, and excellent overall coating quality; simultaneously, the coating particles are fine, and the surface roughness is low, which is more conducive to chip removal during processing.

The utility model discloses a double-arc core diameter milling cutter and relates to the technical field of milling machining, the double-arc core diameter milling cutter comprises a handle part and a cutting part, one end of the cutting part is connected with the handle part, the diameter of the cutting part is D, the cutting part comprises a plurality of cutting edges, chip grooves are formed in every two adjacent cutting edges, the core diameter of each chip groove is 0.5 * D, and the diameter of each chip groove is D; the groove bottom of the chip groove comprises a first arc surface and a second arc surface, one end of the first arc surface is connected with one end of the second arc surface and is far away from the handle part, and the core radius of the first arc surface is larger than that of the second arc surface. According to the invention, cutter breakage caused by chip blockage due to overlarge cutting allowance can be reduced, and the cutting strength and rigidity of the cutter are improved.

The invention discloses a V-shaped tool turret tail jacking machine, and relates to the technical field of horizontal lathes. The machine tool comprises a machine tool body, a first high-low rail, a second high-low rail, a tail jacking assembly, a tool turret assembly and a main shaft assembly. Wherein the middle part of the lathe bed is downwards provided with a chip removal area; the first high-low rail is arranged on the side, located on the chip removal area, of the upper surface of the lathe bed, and the low position of the first high-low rail faces the chip removal area. The second high-low rail is arranged on the other side, located on the chip removal area, of the upper surface of the lathe bed, and the low position of the second high-low rail faces the chip removal area. The tail jacking assembly is assembled on the first high-low rail in a sliding mode. The tool turret assembly is assembled on the second high-low rail in a sliding mode, and a V shape is formed between the tail jacking assembly and the tool turret assembly. The main shaft assembly is arranged on the upper surface of the lathe bed and located on the same side as the first high-low rail, and the main shaft assembly and the tail jacking assembly are coaxially arranged. By the adoption of the technical scheme, the machine tool has the advantages that the width size of the machine tool body is not increased, and chip removal is facilitated.

The utility model discloses a double main shaft double knife tower numerical control machine tool, including frame, first processing device and second processing device. Frame is equipped with two parallel X axle guide rails. First processing device includes the first main shaft mechanism fixed in first X axle guide rail one end and sets up first knife tower mechanism on it, and first knife tower mechanism can move along X, Y axle. Second processing device includes setting up second knife tower mechanism on second X axle guide rail and second main shaft mechanism can move along X axle, and second main shaft mechanism is coaxial with first main shaft mechanism and sets up. Through coaxial double main shaft design has realized workpiece automatic transfer and seamless butt joint between two main shafts, and can complete workpiece double -end continuous processing without manual intervention, through the independent or synchronous processing capacity of double knife tower, can process different workpiece respectively to improve equipment utilization rate, can also process the two ends of the same workpiece in cooperation to shorten single piece processing time greatly, has improved production efficiency and automation level obviously.

The present invention belongs to the technical field of drilling tools, and specifically discloses a vibration drilling tool holder and a method for using the same. The vibration drilling tool holder includes a shell, a tool holder and a tool rod; a fixed seat is fixedly installed in the shell, and the tool holder is rotatably connected to the fixed seat; a fixed sleeve is provided at the bottom of the fixed seat, and an adjusting disk is threadedly connected to the fixed sleeve, and oil filling holes are arranged circumferentially on the outer circumferential surface of the adjusting disk, and a stop block should be installed in the oil filling hole, and a limited position slot is provided on the fixed sleeve, and an operating window is provided on the shell at the stop block; an amplitude plate driving part is installed at the bottom of the adjusting disk; the tool rod and the tool holder are axially slidably connected, and an amplitude plate is fixedly provided at the upper end of the tool rod; a preload spring is provided between the lower part of the tool rod and the shell. The structural design of the present invention is ingenious, and both the amplitude adjustment function and the friction surface lubrication function are realized through the adjusting disk, and it has the advantages of low structural cost, convenient amplitude adjustment, convenient maintenance and long service life.

The application discloses a low-voltage pulsating electric composite flexible cutting processing method, which mainly characterized by: using low voltage instead of traditional high voltage discharge, lower than the plasma maintaining voltage can still carry out the electric discharge machining and the electric discharge process not only exists the electric arc discharge but also accompanies the spark discharge, effectively shortens the gap discharge distance, and greatly reduces the stray corrosion range that may be produced in the electrolytic processing process; using the intermittent electric field, the periodicity of the plasma discharge and the electrolytic reaction can be controlled; using the alkaline solution as the electrolyte, the alkaline solution has good ion conductivity, can guarantee the stable electric field and current, can promote the dissolution and removal of the workpiece material through the chemical action of the alkaline solution; using the tube electrode rotating mode, the narrow gap energy field quasi-equilibrium state pulsating effect is realized and the chip removal is strengthened by the continuous rotation of the tube electrode, the high-pressure internal liquid and the pulse power supply (referred to as "machine-liquid-electricity") coupling effect, the low-voltage mixed plasma pulsating thermal effect, fluid effect and electrolytic reaction are organically combined, and high efficiency, low cost and high quality are realized for the machining of the difficult-to-machine material large-thickness straight surface parts.

The invention provides a milling cutter with differentiated cutting edge passivation parameters and a machining method. According to the milling cutter, the passivation radius of the cutting edge close to the rear cutter face is not equal to the passivation radius of the cutting edge close to the front cutter face; the cutting edge is close to the passivation radius of the rear tool face or close to the passivation radius lt of the front tool face; the thickness is 0.05 mm; the length of the passivated area of the rear tool face in the cutting edge direction accounts for 60%-85% of the total length of the cutting edge of the rear tool face; the length of the front cutter face passivation area in the cutting edge direction accounts for 60%-90% of the total length of the cutting edge of the front cutter face. According to the machining method, when the passivation radius, close to the rear tool face, of the cutting edge is increased, and the passivation radius, close to the front tool face, of the cutting edge is reduced, the proportion of the length, in the cutting edge direction, of the passivation areas of the front tool face and the rear tool face to the total length of the cutting edges of the front tool face and the rear tool face is adjusted and controlled, and therefore the rear tool face can make better contact with a workpiece. On the contrary, the proportion of the length, in the cutting edge direction, of the passivation area of the front cutter face and the passivation area of the rear cutter face to the total length of the cutting edges of the front cutter face and the rear cutter face is adjusted, so that the front cutter face can effectively promote chip removal. According to the invention, differentiated requirements on the performance of the rake face and the flank face under diversified processing scenes can be met.

The present invention discloses a frame part processing method, comprising the following steps: (1) rough milling of the contour; (2) rough milling of the inner cavity; (3) rough milling to remove the flange of the blank; (4) fine milling of the upper plane and the outer contour; (5) processing the connector mounting structure and the hole position set on the side of the part; (6) fine milling of the inner cavity, the boss and the hole position. The method can efficiently complete the processing of the frame parts, and the processing accuracy and surface quality of the parts are stable and reliable.

This invention discloses a connection structure and fastener, comprising a fastener including a body, an insert portion disposed at one end of the body, and a washer installed within the insert portion. The body has an axially penetrating inner hole, the inner wall of which has an internal thread adjacent to the insert portion. The washer is interference-fitted with the insert portion, thereby forming a blind hole in the fastener. The other end of the body also has a riveting portion; a plate having a riveting hole for connecting with the riveting portion, the fastener being interference-fitted with the plate; and a bolt including a threaded shank threadedly connected to the body of the fastener and a nut connected to the end of the shank away from the fastener. The bolt is used to fix at least one connector, the connector being fitted against the side of the plate away from the fastener, and the nut abutting against the other side of the connector, thereby fixing the connector. In this invention, the internal thread of the fastener penetrates the body, having a longer effective thread length within a limited axial space, thereby ensuring connection strength.

The invention provides a cutting fluid and application thereof. The cutting fluid comprises the following components in percentage by mass: 1%-10% of a wetting agent, 10%-20% of a lubricant, 0.5%-3% of a defoaming agent, 0.5%-2% of a settling agent, 1%-5% of an antirust additive, 3%-10% of an auxiliary agent and the balance of water, % is the mass percentage of each component in the cutting fluid; the wetting agent comprises fatty alcohol polyether; the lubricant comprises trans-block polyether, polyether ester or polyethylene glycol; or, the lubricant comprises trans-block polyether and polyether ester; alternatively, the lubricant comprises trans-block polyether and polyethylene glycol. The cutting fluid has excellent lubricating and dispersing performance, so that the cutting fluid has a better cutting effect; specifically, the wire breakage rate, the scratch rate and the torque can be reduced.

This invention relates to the field of laser cutting technology, and provides a laser cutting device for processing laptop casings, including an operating table and a laser cutting head mounted on its top; a movable frame is installed inside the operating table, and clamping structures are provided on both sides of the movable frame; a longitudinal plate is installed inside the movable frame, and a transverse plate is installed at the bottom of the longitudinal plate. This invention, through the clamping structure, incorporates a gear and rack mechanism between the outer support bar and the inner support block. When the outer support bar is in operation, the second rack meshes with the gear, driving the inner support block to move horizontally towards the inner wall of the casing sidewall, forming an adaptive inner support that extends into the sidewall. When laser cutting the top of the sidewall, this provides reliable back support for the thin-walled sidewall, effectively avoiding vibration, tool deflection, or deformation caused by lack of support. Simultaneously, the narrow edge design of the inner support block avoids the rounded transition section at the corner of the sidewall, ensuring the fit of the support and the integrity of the processing.

The utility model provides a saw blade which comprises a saw blade body and sawteeth arranged on the edge of the saw blade body, the sawteeth comprise thick teeth and thin teeth, the thick teeth are located on one side of the saw blade body, the thin teeth are located on the other side of the saw blade body, the front angle of each thin tooth is 3 + / -1 degrees, and the front angle of each thick tooth is 7 + / -1 degrees. The front angles of the saw teeth are smaller, the amount of saw dust contained in the saw is smaller during cutting, the saw is smoother to use and not prone to shaking, and the cutting efficiency can be improved. According to the utility model, the mixed teeth formed by combining the staggered teeth and the flat teeth are adopted, so that the cutting performance can be improved, and chips can be conveniently discharged. The double-sided saw can be used as a double-sided saw to better meet the sawing requirements of different materials or the same material in different directions, and can also be converted into a back clamping saw to meet the requirements of high-difficulty sawing operation.

The utility model belongs to the technical field of cutting tools, and particularly relates to a light energy-saving saw blade which comprises a disc face and a tool bit, the tool bit is installed or formed on the periphery of the disc face, the tool bit comprises teeth, the teeth are in a V-shaped dovetail shape, and blades are arranged on the side edges of the teeth. The disc face comprises a base body, the circumferential center of the disc face is located on the base body, a center hole is formed in the center of the base body, hollowed-out structures are symmetrically formed in the disc face around the center hole, and the hollowed-out structures are Y-shaped structures formed by forming combined holes in sectors. The saw blade is small in dead weight and good in heat dissipation.

The utility model discloses a multi-step expanding and reaming integrated composite cutter which comprises a handle portion, a reamer section and an expanding cutter section are sequentially arranged at the working end of the handle portion, the longitudinal section of a cutting edge of the expanding cutter section is in a step shape, the diameter of each layer of cutting edge is gradually increased from top to bottom, and the handle portion, the reamer section and the expanding cutter section jointly form an expanding cutter body. An end part cutting edge is arranged at the end part of the working end of the expanding reamer body, and a chip groove is formed in the working end of the outer wall of the expanding reamer body. The problem that long-strip-shaped and large-sheet-shaped metal chippings are generated during metal machining of an inner cavity of an existing part is solved.

The utility model relates to the field of grinding tools, in particular to a novel single-layer sintered diamond grinding tool which comprises a base body. The base body is of a cylindrical structure, a connecting groove is formed in one side of the base body, and a plurality of chip grooves are evenly formed in the side, close to the connecting groove, of the working side face of the base body at intervals. The outer side of the base body is wrapped with a metal layer, and the outer side of the metal layer is wrapped with a diamond abrasive material layer. The diamond grinding tool has the advantages that the metal layer and the diamond grinding material layer are sequentially arranged on the outer side of the base body, the chip grooves are formed, the holding force of the metal layer to the diamond grinding material layer can be enhanced, the embedding rate of the metal layer to the diamond grinding material layer is reduced, chip removal is facilitated, the service life of the grinding tool product is prolonged by 1-2 times, and the service life of the grinding tool product is prolonged by 1-2 times. Therefore, the metal layer has very strong holding force on the diamond abrasive material layer, high machining efficiency can be realized, and the diamond abrasive material has the characteristics of strong grinding force and good chip removal space.

The utility model discloses a drilling and tapping machine convenient for chip removal, which belongs to the technical field of machining and comprises a frame, an automatic feeding device and a processing and blanking device, and the automatic feeding device and the processing and blanking device used for processing and blanking round tubes are mounted on the frame. The automatic feeding device comprises a feeding clamping assembly used for pushing the round pipes to the machining position, a sequential feeding assembly and an auxiliary clamping assembly, wherein the sequential feeding assembly and the auxiliary clamping assembly are used for sequentially conveying the round pipes to the feeding position of the feeding clamping assembly. By means of the mode, through cooperative operation of the feeding clamping assembly, the sequential feeding assembly and the auxiliary clamping assembly, round pipes can be automatically fed and clamped, drilling and tapping machining treatment can be conducted on the round pipes at the same time in cooperation with the machining device, the production efficiency is high, the labor cost is reduced, and the production efficiency is improved. And waste chips generated by machining are collected through the discharging and collecting assembly and separated from the machined round pipe, the situation that the machining effect is affected by accumulation of the waste chips is avoided, and chip removal is facilitated.

The utility model relates to the technical field of drill bit, especially to a variable helix integral hard alloy drill bit, including drill bit and drill handle, the drill bit and drill handle are integrally formed structure, the outer wall of drill bit is provided with the outer circle blade zone, the outer wall of drill bit is installed with the outer circle auxiliary blade zone, the outer wall of drill bit is provided with the rear blade angle, the outer wall of drill bit is provided with the top angle, the outer wall of drill bit is provided with helix angle one, the outer wall of drill bit is provided with excessive helix angle, through helix angle adjustment (high helix angle of entry section chip removal, low helix angle of exit section stable cutting), through the balance of chip removal and rigidity of groove type optimization, optimize the chip flow path, accelerate the chip removal, reduce the blockage and cutting heat, improve the hole wall quality, and the rigidity of the patent design product cutter is improved, in high -speed processing, reduce the blockage and heat accumulation, the precision and surface roughness of hole have been effectively improved, and with the cutting heat reduction, the tool life is further improved.

A grinding tool for a flange hole in the bottom of a disc spring of an operating mechanism comprises a bench drill body and further comprises a grinding base, the grinding base is provided with an input shaft and a plurality of output shafts arranged in an annular mode, the input shaft is in transmission connection with a rotating shaft of a motor on the bench drill body, each output shaft is provided with a first chuck, and the first chucks are used for clamping and fixing grinding heads. The grinding base is installed on the bench drill body, the grinding base is provided with the input shaft and the output shafts arranged in the annular shape, the positions of the output shafts correspond to the holes in the bottom flange of the disc spring, the grinding heads are installed on the output shafts, the holes in the bottom flange of the disc spring are ground through the grinding base at the same time, and the grinding precision and efficiency are improved.

The utility model discloses a numerical control machine tool protective cover convenient for chip removal, which relates to the technical field of numerical control machine tool protective covers and comprises a numerical control machine tool body, a machining area is arranged at the front end of the numerical control machine tool body, a protective cover is arranged on the outer side of the machining area, and a cleaning plate is arranged at the front end of the inner side of the machining area. The upper end of the cleaning plate is movably connected with the numerical control machine tool body through a displacement assembly. According to the numerical control machine tool protective cover facilitating chip removal, by arranging a cleaning plate, a displacement assembly, a blocking cover and the like, after the protective covers on the two sides are closed, a worker can check the machining process of a machine tool through an observation window, and during machining, a driving motor is used for driving a lead screw to rotate, so that a displacement seat drives the cleaning plate to move left and right, and a scraping plate cleans the surface of the inner side of the protective cover; and scraps and liquid are prevented from being adsorbed on the surface of the protective cover, and the scraped scraps enter the blocking cover and slide into the collecting groove, so that the scraps are conveniently collected and cleaned, and the convenience is improved.

The invention discloses a composite hot drilling machining method and system.The composite hot drilling machining method comprises the steps that a laser device is arranged below a workpiece, a drilling tool is arranged above the workpiece, the laser device irradiates a laser beam to the position, to be drilled, of the workpiece so as to preheat the workpiece, and after workpiece preheating is completed, the drilling tool is driven to rotate; and the ultrasonic vibration module controls the drilling tool to perform ultrasonic vibration and rotation, so that the drilling tool drills the workpiece. The to-be-drilled area of the workpiece is softened firstly, drilling resistance is reduced, the machinable performance of the workpiece is improved, cutter breakage caused by too large resistance during drilling is avoided, the laser and the drilling cutter are located on the upper side and the lower side of the workpiece respectively, the laser irradiates the to-be-drilled area of the workpiece from bottom to top, the drilling cutter drills the workpiece from top to bottom, and the drilling efficiency is improved. When the laser irradiates the laser beam to the workpiece, the drilling tool avoids the laser beam, the laser beam does not irradiate the drilling tool, the influence of laser irradiation on the drilling tool can be reduced, and the service life of the drilling tool is prolonged.

This utility model discloses an alloy drill bit for machining aerospace parts, belonging to the field of alloy drill bit technology. It includes a drill shank, a drill body, and a drill tip. The drill body is located at one end of the drill shank, and a cutting edge is located at one end of the drill body. The cutting edge is arc-shaped and has a rake angle of -5°. The drill tip is located at the other end of the drill body, with an angle of 135°. The coordinated use of the drill body, cutting edge, and cutting edge transition zone enhances the stability of the cutting edge, improves wear resistance and chipping resistance, and facilitates deep hole machining. The drill tip provides self-positioning, eliminating the need for pre-drilling. The cooling channel allows for internal cooling of the drill body and drill tip, accelerating heat dissipation and improving machining efficiency. The spiral chip removal groove provides a transition and enhances strength while facilitating chip removal.

The utility model provides a long -life high -performance screw tip tap has the coarse handle handle, thin neck and screw tip of coaxial connection as an organic whole, the chip flute made of screw tip is three groove structure, and the chip flute of three groove structure is three equal parts distribution relative to tap center axis, and the chip flute groove shape is two straight lines two circular arc form, and the smooth transition between circular arc, the screw tip still is made with straight flute, and the screw tip tap adopts the high -speed steel material of vacuum heat treatment, cryogenic treatment and passivation treatment to make. The utility model solves how to reach the technical problem of high -efficient tapping processing of high -performance screw tip tap product on numerical control equipment, improves tap life, processing high -efficient, quality is stable, long -lived, is fit for promotion.

The invention relates to the technical field of stone machining, in particular to granite cutting equipment which comprises a stone bearing device, a stone conveying device, a longitudinal linear motor, a circular ring, a turning servo motor, a bearing plate and a transverse linear motor. The longitudinal linear motor is adjacent to the stone bearing device, the moving direction of a rotor of the longitudinal linear motor is parallel to the stone conveying direction, the circular ring is located above the rotor of the longitudinal linear motor, and the cutting device is installed on the transverse linear motor and connected with the turning servo motor through a bearing plate and matched with the stone conveying device through the stone bearing device. The stone cutting device is simple in structure, can be suitable for stones with different widths and different thicknesses, can facilitate stone cutting work without being corrected by an operator, can achieve flexible adjustment of the cutting angle and dynamic cutting, and is beneficial to improving the stone cutting efficiency.