114results about How to "Increase chip space" patented technology

The invention discloses a manufacturing method of a single-layer brazing diamond grinding wheel. The manufacturing method includes steps of preparing a base body of the diamond grinding wheel by a machining method, deoiling and descaling; utilizing mixture of Cu powder, Sn powder, TiH2 powder and WC (wolfram carbide) powder as brazing filler metal of the diamond grinding wheel, and mechanically blending uniformly; sequentially arranging the base body, the brazing filler metal and diamond grains of the diamond grinding wheel to manufacture a tool forming blank; placing the tool forming blank into a vacuum furnace, subjecting the brazing filler metal and the diamond grains to chemical reaction by means of brazing process, cooling to the room temperature along with the furnace, and discharging. Cost for raw materials can be reduced to some extent and oxidation pollution can be avoided by utilizing TiH2 as a Ti source, wear resistance and heat resistance of the brazing filler metal can be improved by adding the superfine WC powder into the Cu powder, the Sn powder and the TiH2 powder, graphitization of diamond can be reduced, thereby heat damage of the diamond can be reduced, and the diamond grinding tool can sufficiently give into play.

An electrospark-mechanical method for shaping the abrasive disc made of metallic binder and superhard abrasive material includes such steps as electrospark shaping until the electrospark can not be generated, mechanical shaping by brake-type silicon carbide roller for removing all projected abrasive particles, alternatively repeating said steps for 2 hr, lowering the electric parameters, and sequentially repeating said steps until its shaping accuracy reaches 6 microns.

The invention provides a diamond grinding wheel for precise polishing for the surface of a silicon material and a manufacturing method for a tool bit thereof. Surface roughness Ra of a silicon chip polished by the grinding wheel is lower than 0.03, Ry is lower than 0.27, and Rz is lower than 0.29. The diamond grinding wheel comprises a steel basal body and the tool bit embedded in the steel basal body; the tool bit is manufactured by the following steps: putting a mixed material into a die cavity of a die; and heating and pressurizing the mixed material, so as to press the mixed material to the required size; and a preparation method for the mixed material comprises the following steps: preparing powder from the following components in volume percentage: 20 to 40 percent of phenolic resin, 12. 5 to 25 percent of diamond, 10 to 15 percent of Fe2O3, 10 to 15 percent of CeO2, 5 to 10 percent of Al2O3, and 5 to 10 percent of Cu powder; and then 20 to 50 percent powder mass of pore forming agent is added into the powder.

The invention discloses a diamond grinding wheel, which has multi-layer abrasive particle orderly arrangement, is high in bonding strength and is convenient to repair after being worn, and a production method thereof. The production method comprises steps of processing a grinding wheel basal body, cleaning and the like. According to the diamond grinding wheel and the production method thereof disclosed by the invention, a laser material increasing technology is adopted to accurately process, so that processing precision and processing quality are improved; a sandwich structure is adopted for sintering, so that the abrasive particles are prevented from moving, protruding height of the abrasive particles is guaranteed to be consistent, orderly arrangement of the diamond abrasive particles is realized, a chip space during grinding is great, grinding force is reduced, a grinding temperature is reduced, grinding efficiency is improved, and grinding surface quality is improved; power of a laser unit is controlled for controlling a sintering temperature, so that the diamond abrasive particles are prevented from graphitizing, and a metal bonder is combined with the diamond abrasive particles in a high-strength metallurgical mode; a manufacturing process further can be simplified; and the diamond grinding wheel is finished layer by layer after being worn, and then is continuously used, so that finishing is convenient, and the service life of the diamond grinding wheel is long.

The invention relates to a production method of a brazed diamond wire saw, comprising the following process steps: 1. a steel wire enters a vessel stored with paste solder; 2. the steel wire adhered with solder enters a first wire-drawing die to facilitate the steel wire passing through the first wire-drawing die to be evenly coated with a layer of solder; 3. the steel wire adhered with solder enters a sealed dust box which contains diamond powder with diameter being 20-30 mum, a blower device blows the diamond fine powder, and the steel wire adhered with solder is evenly coated with a layer of diamond powder after passing through the dust box; 4. the steel wire adhered with solder enters a second wire-drawing die and is evenly and tightly coated with a layer of diamond powder; 5. the steel wire adhered with solder enters the center of a coil of high frequency induction welding, the solder melts down instantly, and diamond and the wire are fixedly and metallurgically bonded; and 6. a roll-up wheel evenly winds the finished diamond wire by welding. The method of the invention has quick production speed, and the prepared brazed diamond wire saw has long service life.

The invention discloses a manufacturing method of an electroplated grinding wheel of an ordered structure. The method includes: adopting a pulse laser beam to process a fine spiral groove with the pitch of hundreds of micrometers and the notch size of dozens of micrometers in the working surface of the outer annulus of a grinding wheel base body made of metal, filling the groove with epoxy resin, and enabling the metal and the epoxy resin on the working surface of the outer annulus of the grinding wheel base body to be in spiral regularly-spaced layout; then electroplating the working surface of the outer annulus of the grinding wheel base body with abrasive grains by adopting an electroplating method. Since the groove is filled with the non-conductive epoxy resin, the region cannot be electroplated with the abrasive grains. By the steps, the electroplated grinding wheel with the abrasive grain layer and the epoxy resin being in spiral regularly-spaced layout can be obtained. The manufactured electroplated grinding wheel of the ordered structure is in favor of solving the problems that the grinding wheel is blocked easily during grinding and grinding fluid cannot enter the grinding region easily, workpieces can be prevented from being burnt, and the grinding quality is improved.

The invention discloses a spiral fluted tap and a method for processing the same. The spiral fluted tap comprises a tap body provided with a plurality of uniformly distributed spiral flutes on a front cut part, wherein the spiral flute is an S-shaped smooth curved groove formed by sequentially connecting four sections of tangential circular arcs end to end; and the four sections of tangential circular arcs are a cutting circular arc, a chip curling circular arc, a chip accommodating circular arc and a blade back circular arc respectively. The method for processing the spiral fluted tap comprises the following steps of: (1) preparing before processing; (2) processing the spiral flute by a special tool: fitting a blade shape of a cutter by a computer, and then manufacturing the cutter according to the fitted cutter blade shape so as to process the spiral flute; and (3) carrying out subsequent treatment by using a machining process so as to obtain a finished product of the tap body. The spiral fluted tap processed by the method has simple structure and can be molded in one step. Moreover, the processing method is suitable for different processing materials, particularly for processing fluted taps made of light alloys, such as an aluminum alloy and the like.

The invention discloses a method for preparing a single-layer diamond abrasive tool through chemical vapor deposition. According to a silicon carbide base body, a diamond abrasive material is mixed into a photoresist solution and is subject to ultrasonic vibration, rotating whirl coating is used for evenly dispersing diamond abrasive particles, uniform distribution of the particles on a base body substrate can be achieved, the CVD method is adopted to enable the diamond coating bonding agent to be subject to deposition between the diamond abrasive particles and the silicon carbide base body, the abrasive material and the base body are firmly connected together, and meanwhile, the abrasive particles grow to become high-grade cubic octahedral single-crystal particles. The prepared single-layer diamond abrasive tool is high in abrasive particle holding force, the exposure height is large, the chipping containing space is large, defects of electroplating and brazing single-layer diamond abrasive tools are overcome, and the method is suitable for preparing fine granularity (five micrometers to 100 micrometers) single-layer diamond abrasive tools. The prepared single-layer diamond abrasive tool has the wide application prospect in high-precise grinding fields of crisp and hard materials of semiconductors, optical crystals, artificial sapphire, glass and the like

The invention discloses a gradient alloying granulation method of a diamond abrasive grain surface binding agent. The diamond abrasive grains with a gradient alloying binding agent layer comprise diamond grains; an inner binding agent, a middle binding agent and an outer binding agent are arranged on the surfaces of the diamond grains in sequence; and the content of carbide forming elements in the binding agent is gradually decreased layer by layer. A gradient alloying granulation device of the diamond abrasive grain surface binding agent is used for preparing the diamond abrasive grains and comprises a roller, a slurry feeding sprayer, a power feeding sprayer and an ultrasonic stirrer. The gradient alloying granulation method of the diamond abrasive grain surface binding agent uses at least three sets of above devices, and comprises the following steps: a, wrapping the inner binding agent on the surfaces of the diamond grains; b, wrapping the middle binding agent on the surfaces of the diamond grains; and c, wrapping the outer binding agent on the surfaces of the diamond grains. The prepared abrasive grains have relatively good performance and the preparation method is high in efficiency.

The invention discloses a preparation method for a diamond fiber grinding wheel and a section mold. The preparation method for the diamond fiber grinding wheel comprises the following steps: step 1, preparing a grinding wheel section: uniformly fixing strip-shaped diamond fiber to the periphery of the designed section mold, wherein one end of the diamond fiber points to the center of the section mold in radiation arrangement, then adding section mold to the carcass material to perform hot press formation, so that the grinding wheel section is prepared; step 2, performing overall hot press formation for the grinding wheel section: performing hot press formation for a plurality of grinding wheel sections and grinding wheel base material to obtain the diamond fiber grinding wheel. A plurality of rows of small holes are formed in the periphery of the section mold provided by the invention; the prepared diamond grinding wheel has a long service life, the diamond cannot fall off easily, the scrap containing capacity and dissipation capacity are increased, and heat damage of the workpiece can be effectively avoided or reduced.

The invention belongs to the technical field of grinding, and in particular, relates to a ceramic bond CBN composite grinding wheel for grinding titanium alloys and a preparation method. The compositegrinding wheel comprises a basal body, and a composite patch fixed on the basal body by using an adhesive layer and used for grinding the titanium alloys. Through cooperation between ceramic microcrystal abrasives and CBN abrasives, the composite grinding wheel is prepared, sharp cutting edges can be continuously generated, more chip accommodating space is provided, the heat dissipating effect isimproved, the stable grinding effect is maintained, the finishing amount is reduced, and the production efficiency is improved; and through bonding and holding effects of low-temperature ceramic bondreinforcing abrasives with a specific ratio, the self-sharpening property is better, the chip accommodating space is larger, and the surface smoothness of grinded workpieces is further improved. Based on brand new raw material formulas, the preparation method forms a stable grid structure through low-temperature ceramic bonds, the CBN abrasives and the ceramic microcrystal abrasives to improve the mechanical strength of the composite grinding wheel.

The invention discloses a superhard grinding tool and a preparation method thereof. The superhard grinding tool comprises a grinding tool substrate and a grinding material, wherein the grinding material is solidified on the grinding tool substrate through a plating layer, and the plating layer comprises the following components by mass percentage: 10% to 20% of Cr, 5% to 15% of P, and the balance of Ni. According to the superhard grinding tool provided by the invention, the chemical metallurgy binding of the grinding material, a plating metal alloy and the grinding tool substrate is realized, the holding strength of the grinding material is greatly improved, the problems of the existing plating superhard grinding tool that the grinding material is easily shed or the plating layer is peeled off under the efficient grinding conditions, resulting in the overall failure of the grinding tool are solved, and the service life of the grinding tool is prolonged; the chip space of the grinding tool is large, and the plugging is not easily generated; the quality is stable, the service life is long, and the superheard grinding tool is suitable for being popularized and applied.

The invention relates to a twist-drill oil-groove milling cutter. The twist-drill oil-groove milling cutter is optimized based on a normal twist-drill and can make full use of the cutting performance of the twist-drill. The vertex angle 2 Phi of the twist-drill oil-groove milling cutter is 120 degrees, and two main cutting edges are forward and backward spatial spiral C-Shaped curves with chip dividing grooves. By adoption of the two main cutting edges and the milling cutter provided with two big right-handed-rotation chip-hold and chip-removal spiral grooves, compared with a multi-tooth straight blade ball oil-groove milling cutter, chip deformation is less, chip- breaking, chip-removal and cooling are convenient. The twist-drill oil-groove milling cutter has the advantages of big chip holding spaces and smooth chip removing, progressive cut-in, stable cutting, high machining quality, long lifetime of cutting tools, and the like. The twist-drill oil-groove milling cutter is low in manufacturing cost, convenient to cutter sharpening, high in machining efficiency, and beneficial to promotion and application in production, and is a good cutter tool with excellent drilling and milling functions.

The invention relates to an indexable turning blade for high temperature alloy semifinishing under high-pressure cooling, and belongs to the technical field of turning tools. The turning blade comprises a turning blade body, the shape of the outline of the horizontal cross section of the turning blade body is hexagon, a fastening screw hole is formed in the geometrical center of the hexagonal turning blade body, a front cutter face is arranged on the outer periphery of the top face of the hexagonal turning blade body, and the six vertex angles of the hexagonal turning blade body are composed of three 80-degree angles and three 160-degree angles which are sequentially and alternatively arranged; arc cutter tips are arranged at the three 80-degree angles of the hexagonal turning blade body, negative chamfered edge cutting edges are arranged at the six outer edges of the top face of the hexagonal turning blade body, and protrusions are arranged nearby each arc cutter tip; and fold line step-shaped chip breaker grooves are arranged on the top face of the hexagonal turning blade body and the corresponding positions of the 160-degree angles on the front cutter face, chip grooves are composed of the fold line step-shaped chip breaker grooves and the front cutter face, and the bottom face of the hexagonal turning blade body is a blade installing supporting face. The indexable turning blade is used for high temperature alloy semifinishing under high-pressure cooling.

The invention discloses a cutter processing process, which comprises the following steps that A, the appearance of a cutter is processed by a lathe according to a drawing; B, cooling holes are processed, and two symmetrical through holes are processed in the cutter; C, straight chip discharging grooves are processed, and two straight chip discharging grooves are processed on the outer circumference of the cutter; D, high-temperature-resistant materials are fully filled in the cooling holes; E, high-frequency heating is carried out, the products are fixedly arranged on a clamp, a layer of high-frequency coil is arranged on the outer circle of the products, and the heating temperature is 300 to 450 DEG C; F, the straight chip discharging grooves are twisted into spiral grooves. The cutter processing process has the advantages that through the processing method, the processing difficulty is reduced, meanwhile, the step of forming a cooling groove in the center of the cutter is omitted, the rigid of the cutter is guaranteed, meanwhile, the depth of the chip discharging grooves is also increased, the depth of the chip discharging grooves twisted by a hot twisting process is greater than the depth of the chip discharging grooves processed by a traditional method, the chip accommodating space is greater, iron chips can be conveniently discharged out, the smoothness of inner holes and the precision of the hole diameter dimension can be perfectly guaranteed.

The invention discloses a single-blade milling cutter applicable to the technical field of milling cutter structures. The single-blade milling cutter comprises a cutter handle and a cutter body connected to one end of the cutter handle. The cutter body is provided with a spiral cutting blade, a chip discharging groove and a main cutting blade. The chip discharging groove and the spiral cutting blade are spirally arranged around the axis of the cutter body in the direction from the front end of the cutter body to the cutter handle. The spiral cutting blade and the chip discharging groove are same in the spiral angle. The main cutting blade is arranged at the front end of the cutter body and is adjacent to the chip discharging groove. The cutting edge of the main cutting blade is of an arc concave structure, and the main cutting edge is provided with an arc-shaped relief angle. Through the single-blade milling cutter provided by the invention, the overall stiffness strength of the milling cutter and the sharpness of the cutting edges can be improved, and meanwhile, the effect that chips are discharged smoothly is ensured.

The invention discloses a sintered rope saw string bead. The sintered rope saw string bead consists of diamond, a metal mold, a steel body and metal separation bars; the hardness of the metal separation bars is lower than the hardness of the metal mold; the metal separation bars are continuously distributed in the metal mold; the diamond is distributed in the metal mold; and the metal mold is fixedly connected to the surface of the steel body. Based on a traditional sintered rope saw string bead, the low-hardness spiral metal separation bars are implanted in the metal mold; when a rope saw works, the spiral metal separation bars without the diamond are easily rubbed and scoured by cutting chips to form spiral grooves on the surface of the string bead; and the grooves can achieve the effects of reinforced diamond cooling and smooth chip removal in the cutting process, so that the cutting efficiency of the rope saw is improved.

The invention discloses a manufacturing method and device of a brazed diamond tool and relates to the technical field of tool manufacturing. According to the manufacturing method and equipment of the brazed diamond tool, the defect that the protruding heights of abrasive particles of an existing brazing tool are poor in consistency is overcome, the advantages of an electroplated tool using an inside-plating method is combined, good equal height performance and high precision of tool abrasive particles can be ensured. The manufacturing method comprises the following steps that a moulding bed is manufactured, and the moulding bed is an inner hole moulding bed; diamond abrasive grains are orderly distributed on the surface of an inner hole of the moulding bed; a tool clamp is used for accurate positioning of the moulding bed and a tool basal body, and a gap of 1-2 mm is reserved; the gap is filled with brazing filler metal, and punning is conducted; the moulding bed, the tool basal body and the clamp are perpendicularly placed in a vacuum furnace in the axial direction and heated and brazed; after brazing is completed, the moulding bed, the tool basal body and the clamp are fetched out, and the moulding bed is turned until the thickness is 0.5-1 mm; and the brazing filler metal on the outer layer part of the moulding bed is removed through electrolysis, and the diamond abrasive grains are exposed and serve as cutting edges.

The invention discloses a preparing device and method for a spirally and orderly arranged fiber abrasive wheel. The device comprises an abrasive wheel forming mechanism and a fiber equal-height protrusion mechanism. The abrasive wheel forming mechanism comprises an upper die plate, a lower die plate, a die sleeve I, a die sleeve II and a core bar. The fiber equal-height protrusion mechanism comprises a support, electromagnets and clamps. The preparing method comprises the steps that phenolic resin, a heat conduction material, metallic oxide, a solid lubricating agent and a pore forming material are mixed according to the proportion, and a blank is manufactured through hot-press forming; a series of circular holes spirally distributed are machined in the outer circumference of the blank through a deep hole drill, and a base body is obtained; the circular holes are filled with epoxy resin, fiber is embedded in the circular holes one by one, and the fiber is fixed to the base body through the abrasive wheel forming mechanism; the consistency of the fiber protrusion height is ensured through the fiber equal-height protrusion mechanism; and the epoxy resin is heated and cured, and the abrasive wheel is formed. The preparing device and method for the spirally and orderly arranged fiber abrasive wheel have the beneficial effects that the fiber protrusion height is consistent, the holding force is large, and the bending resistance is high; and the finishing workload of the abrasive wheel is low, the manufacturing cost is low, and the service life is long.