134 results about "Cylindrical grinder" patented technology

The invention belongs to the technical field of grinders, and particularly relates to a full-automatic numerical control cylindrical grinder with manipulators capable of feeding and blanking. The full-automatic numerical control cylindrical grinder with the manipulators capable of feeding and blanking comprises an engine base, and a workpiece clamping mechanism and a grinding wheel mechanism are arranged in the engine base; the full-automatic numerical control cylindrical grinder with the manipulators capable of feeding and blanking further comprises an automatic feeding mechanism and an automatic blanking mechanism, the automatic feeding mechanism comprises a first manipulator and a first cylinder, the automatic blanking mechanism comprises a second manipulator and a second cylinder, the engine base is provided with a beam, the first manipulator and the second manipulator are connected with the beam in a sliding mode, the engine base is further provided with a detection mechanism used for detecting the outer diameter of a workpiece, and the detection mechanism is located at the front end of the workpiece clamping mechanism. The full-automatic numerical control cylindrical grinder with the manipulator capable of feeding and blanking is configured with the manipulator capable of feeding and blanking automatically and automatic detection equipment, the unmanned operation of the whole procedures of the workpiece processing technology which comprises blank feeding, clamping, processing, detecting, material taking out and material taking up can be completed, the processing efficiency and the processing precision are high, and the unmanned operation can reduce the labor cost.

A beneficiation method of sulphide ore relates to improvement of a beneficiation method of sulphide ore, and especially adopts a combined flotation method with a cylindrical grinder. The beneficiation process comprises the steps of performing first-stage screening of sulphide ore to obtain a first-stage coarse particle concentrate A1 and a first-stage tailing product A2; and the beneficiation process is characterized in that the first-stage tailing product A2 is subjected to a combined screening process by a cylindrical grinder. The method of the invention can effectively overcome the problem that sulphide ore with a small disseminated grain size and complex material composition cannot be recovered effectively with routine flotation methods in a flotation process, adopts a combined screening process of first-stage tailings by using a cylindrical grinder, and achieves satisfied metal recovery effect on ultrafine particle fractions in the ore by beneficiation with a cylindrical grinder.

The invention relates to a stiffness-measurement-based optimization method for cylindrical grinding process parameters. The method includes: 1, measuring machine tool static stiffness; 2, measuring grinding wheel spindle stiffness to optimize grinding process parameters. The method has the advantages that whether stiffness of a cylindrical grinder headstock, a tailstock center and a grinding wheel carriage system is satisfactory to the given grinding process parameters or not is analyzed; precision of ground workpieces is analyzed under certain grinding process parameters by measuring machine tool static stiffness and grinding wheel spindle stiffness according to a grinding force calculation formula so as to provide basis for the optimization of grinding process parameters.

The invention relates to a processing method for a hollow thin-walled elongated shaft. By adopting the processing equipment of a numerically controlled lathe and a numerically controlled cylindrical grinder, the process route is rationally optimized, the processing parameters are reasonably given, and an inner hole boring tool with a machine clamping tool is used, and Carbide 90° cylindrical turning tool, innovative clamping method for parts processing, provides a processing method for the processing of hollow thin-walled slender shaft parts, and realizes the processing of hollow thin-walled slender shaft parts .

A cylindrical grinder includes a workpiece support section adapted to support a generally cylindrical workpiece and rotate the workpiece about a rotational axis, and a wheel head adapted to support and rotate a grinding wheel. The wheel head is moved relative to the workpiece support section, along a first direction parallel to a rotational axis of the workpiece and along a second direction perpendicular to the first direction in order to grind an outer surface of the workpiece. The wheel head is turnable relative to the workpiece so that a rotational axis of the grinding wheel can be tilted within a plane substantially passing through the rotational axis of the grinding wheel and the rotational axis of the workpiece, within a range extending across a reference plane perpendicular to the rotational axis of the workpiece. Further, link-type parallel link mechanisms for moving the grinding wheel are disclosed.

The invention relates to an in-grinding coordinate automatic compensation method based on an end face cylindrical grinder. The method comprises the steps that when a coordinate system is established each time, difference values of target coordinates and mechanical coordinates are stored in a macro-variable, digital-controlled macro-variable memory coordinates are used for compensation amount and grinding wheel conditioning compensation amount, programs are called for computing coordinate values again each time a machine is started, and workpiece coordinates are automatically compensated; when coordinates are set manually, difference values before and after coordinate compensation are stored in the macro-variable, adding with grinding wheel diamond coordinates is carried out, and new diamond coordinates and grinding wheel frame safe position coordinates are computed; a measuring instrument is used for sending a signal to a CNC in a first gear for grinding multi-gear workpieces, a jumping-switching instruction is used in a program, accumulating is carried out on the measuring instrument compensation value each time, and the measuring instrument compensation values are stored in the macro-variable and are marked as measuring instrument accumulating compensation values; and before next grinding, the measuring instrument accumulating compensation values are subtracted from the first-time-established coordinate values. According to the method, errors caused by lathe repeated locating accuracy and grinding wheel loss can be automatically compensated during a grinding process.

The invention relates to a processing and detection method of drill bit chuck for PCB drilling machine, comprising: a. Using a closed-loop CNC cylindrical grinder to grind the external conical surface and external cylindrical surface of the chuck to make the straightness of the external conical bus of the chuck and the circularity of the cylindrical surface meet the design requirement; b. When processing the conic angle of the chuck through moving the grinder rail, using percent meter or dial indicator to ensure the design precision of the conic angle; c. Inserting a special mandrel in the guide hole of the chuck, the centre holes of both ends of the mandrel is the benchmark, fine grinding the conical surface and the external cylindrical surface to meet the requirement, using the center hole of the mandrel to locate and detect the straightness of the conical bus and cylindrical surface and the flop of the conical surface, cylindrical surface of the grinded finished product. The processing and detection method has the advantages that the operation and control are easy, the processed chuck is high-precision, the comprehensive performance of the chuck meets the design and production requirement.

The invention provides a roll grinder for grinding guide rolls of aluminum foil processing equipment, and can solve the problem that the conventional roll grinder cannot be used for grinding the guide rolls of the aluminum foil processing equipment. The invention adopts the technical scheme that the roll grinder comprises a support system for a guide roll; the support system comprises a finial, a nylon block, a rotary chuck and two brackets; the rotary chuck is provided with an adjustable pusher dog; support circles are arranged at two ends of the guide roll and are supported by the brackets; a connector is arranged on the outer side of the support circle at one end of the guide roll; one side of the connector is connected with the support circle; the other side of the connector is connected to the pusher dog of the rotary chuck in a clamping manner; the support circle at the other end of the guide roll is propped against the nylon block; and the nylon block is propped against the finial. The roll grinder can be used for grinding not only working rolls but also guide rolls, so as to ensure that an aluminum foil processing enterprise is not required to purchase a cylindrical grinder to grind the guide rolls specially any more, which reduces the investment cost and the operation cost of fixed capital and improves the utilization ratio of the fixed capital.

The invention discloses a cylindrical grinding gantry manipulator. The cylindrical grinding gantry manipulator comprises a mobile beam arranged above a grinding carriage of a cylindrical grinder. A clamping mechanism is installed at the left-hand end of the mobile beam. An automatic chuck is arranged below the clamping mechanism and inserted in a heart carrier on the cylindrical grinder. A workpiece feeding bin is arranged below the right-hand end of the mobile beam. A workpiece return bin is arranged on the outer side of the workpiece feeding bin. The clamping mechanism can place workpieces into the automatic chuck or take down the workpieces from the automatic chuck and can reciprocate among the automatic chuck, the workpiece feeding bin and the workpiece return bin to convey the workpieces. The cylindrical grinding gantry manipulator has the following advantages that the clamping mechanism can reciprocate among the automatic chuck, the workpiece feeding bin and the workpiece return bin along the mobile beam so that the workpieces can be fetched, fed, machined, returned, moved away and fetched again; in this way, one operator can operate several cylindrical grinders at the same time, and therefore production benefits are increased; besides, the automatic chuck can clamp and release the workpieces.

The invention relates to a method for preparing a guide carrier roller used on a steel rolling production line, in particular to the method for preparing a heat-resistant and abrasion-resistant composite guide carrier roller. The method comprises the following steps of: firstly, preparing a guide carrier roller matrix, and carrying out conventional heat treatment on the guide carrier roller matrix; mixing Ni60 powder and Cr3C2 powder to prepare alloy powder; removing oil stains on the surface of the guide carrier roller matrix by using a cleaning agent; preheating the guide carrier roller matrix to be molten and coated; melting, coating and scanning the guide carrier roller matrix with a laser by adopting a method for pneumatically delivering powder; melting and coating the alloy powder on the surface of the guide carrier roller matrix for two times; and grinding the molten and coated guide carrier roller with a cylindrical grinder according to diameter dimensions to prepare the finished product composite guide carrier roller of which the surface is provided with a metal ceramic alloy abrasion-resistant layer. The method for preparing the composite guide carrier roller has high controllability of technological process, meets the requirements of continuous production on steel rolling lines under severe working conditions, saves a great number of precious heat-resistant stainless steel alloy materials and has the advantages of low price, high productivity and the like.

Provided are a grinding method and a grinding apparatus for forming a chosen continuous microscopically curved surface on the thrust surface of a shaft using a cylindrical grinder. In a cylindrical grinder provided with a main shaft for holding and rotating a cylindrical workpiece, a cylindrical grindstone for grinding the workpiece and a cylindrical grindstone feed shaft that moves the cylindrical grindstone in a parallel manner, the cylindrical grindstone feed shaft is disposed so that the angle of intersection with the rotation axis of the main shaft is greater than 90 degrees to 100 degrees or less. This grinding method comprises a step for synchronizing the rotational movement of the main shaft with the reciprocating movement of the cylindrical grindstone to form a chosen continuous microscopically curved surface on the thrust surface.

The invention relates to an integrated blade disk and blade tip curved surface numerical control grinding device which comprises a numerical control end face cylindrical grinder, a cubic boron nitride grinding wheel, a grinding fixture and a grinding wheel dressing device. Without changing functions of the numerical control grinder, the cubic boron nitride grinding wheel replaces an original corundum grinding wheel, the abrasion loss of the grinding wheel is reduced, a portion of the grinding wheel participating in grinding is dressed into a circular arc through the grinding wheel dressing device, an integrated blade disk and blade tip curved surface is grinded on the numerical control grinder, and machining quality of the integrated blade disk and blade tip curved surface is effectively improved. The invention further relates to an integrated blade disk and blade tip curved surface numerical control grinding method. By the aid of a point type grinding method, the grinding method is accurate and reliable, the grinding wheel is simply and conveniently dressed after abraded, production cost is low, and the grinding method is fine in universality and applicable to machining a blade tip curved surface similar to a single integrated blade disk and blade tip curved surface and an integrated blade disk rotor component.

The invention relates to a processing method of a central frame and a triangle sleeve of an equal-height triangle sleeve. The invention includes the steps: (1) a debugging bar is designed and manufactured; (2) the debugging bar is used for a grinding trial to regulate a cylindrical grinder for use; (3) a machine tool is regulated by the debugging bar to be a standard external grinding required by the grinding of the triangle sleeve; (4) three guide faces of the triangle sleeve which have a 60 degree angle with each other are respectively grinded out through three-time positioning on a 60-degree clamp on a electromagnetic absorbing disk of a plane grinder; (5) a mutual parallel degree between three faces is detected and is less than 0.003mm. The invention has beneficial effects that the structure loading contact area of the equal-height triangle sleeve is big; the loading capability is strong and the guide accuracy is high. No distortion happens to the moving direction of the triangle sleeve under the effect of forces from any direction. Not only a fact that a wear-resistant PTFE support face fixed at the front end of the triangle sleeve contacts the supported external circularity on one generatrix can be guaranteed, but also the structural central frame of the equal-height triangle sleeve is convenient for repairing.

A cylindrical grinder is disclosed that includes a support unit including an upper support device and a lower support device, in which an ingot of silicon single crystal is interposed in a direction of axis line between the upper support device and the lower support device and is clampingly held to be rotated around the axis line, and a grinding unit that relatively moves along the direction of axis line of the ingot to traverse grind an outer circumference of the ingot. The upper support device is placed at an upper position and the lower support device is placed at a lower position, so that the support unit clampingly holds the ingot in a state in which the direction of the axis line of the ingot is disposed along a vertical direction.

The invention relates to a composite machining technology for serial high-accuracy notch shafts, belongs to the technical field of shaft parts grinding and mainly solves the problem that the rejection rate is as high as 40% to 50% in a prior milling machine machining technology. The composite machining technology is mainly characterized by lathing straight material sections as required by design; performing quenching and heat treatment through a tempering furnace till the surface hardness HRC is in a range of 60 to 65; using a centerless external cylindrical grinder for outer diameter coarse grinding, and performing flaw detection afterwards; using the centerless external cylindrical grinder for outer diameter fine grinding; machining notches through a linear cutting machine; performing surface polishing with a polishing machine; and using a spray-type cleaning machine for demagnetization cleaning and cleaning rust prevention to obtain high-accuracy shafts with notches. The composite machining technology has the advantages of being low in equipment investment, high in product quality and qualified rate and suitable for batch production. The qualified rate is 99%, 300 pieces / 8 hours are produced per shift, and the machining technology is mainly used for machining high-accuracy notch shafts.

An improved wet and dry food grinder having a base assembly and a grinder assembly receivable on the base. The base contains an electric motor with associated electrical circuitry and drive means attached thereto. The grinder assembly has a cylindrical cover and a cylindrical grinder bowl received within the cover. Grinder blades are mounted in the grinder bowl and are driven by the drive means. The motor is actuated by placing the grinder assembly in position on the base and pressing down.

The invention relates to a machining method of a wheel groove milling cutter, and discloses a machining method of a wheel groove semi-finish milling cutter. The machining method of the wheel groove semi-finish milling cutter solves the problems that an existing machining method of the wheel groove semi-finish milling cutter can not ensure machining precision and machining efficiency. Molded lines of the wheel groove semi-finish milling cutter are turned on a numerically controlled milling machine; tooth benchmarks of the wheel groove semi-finish milling cutter are milled on the numerically controlled milling machine; tooth back steps of the wheel groove semi-finish milling cutter are milled on the numerically controlled milling machine; 35-flat neck benchmarks of the wheel groove semi-finish milling cutter are milled on a horizontal milling machine; the wheel groove semi-finish milling cutter is hardened to be HRC66-68 in a quenching mode; a Brown and Sharpe NO.9 taper benchmark of the wheel groove semi-finish milling cutter is ground on a cylindrical grinder; the grinder cuts off an auxiliary head of the wheel groove semi-finish milling cutter, and rubs down the end face of the wheel groove semi-finish milling cutter; a five-axis numerically controlled grinder grinds a front corner, a wave blade form and a rear corner of the wheel groove semi-finish milling cutter; after the wheel groove semi-finish milling cutter is machined, the wheel groove semi-finish milling cutter is coated with an AlTiN coating; the wheel groove semi-finish milling cutter is lettered and packaged. The method is used for machining the wheel groove semi-finish milling cutter.

The invention discloses a measuring device during the machining of a cylindrical grinder, which comprises a measurement main body, a measuring head, an adjusting device of the measuring head, a dial gauge and an adjusting device of the dial gauge. The device comprises the key points that: the dial gauge is vertically arranged on a dial gauge fixing rod of the main body through locking screws; the dial gauge adjusting rod is fixed at the tail end of a movable sleeve of a measuring rod through clamp nuts to keep concentric with the center line of the dial gauge; the movable sleeve of the measuring rod is arranged on the upper part of the measurement main body through a pin shaft; the measuring rod is fixedly arranged in the movable sleeve of the measuring rod through the locking screws; the measuring rod is integrated with the movable sleeve to move up and down by taking the pin shaft as the centre of a circle; a measuring head up-down adjusting arm fixed on the measuring rod through clamp screws is inserted into the lower end of the measuring rod; the measuring head is fixed at the lower end of the adjusting arm through the locking screws; and the whole measuring device is fixedly arranged at the corresponding position of a machine body through main body fixing screws. The measuring device has the advantages of simple structure, convenient measurement, high precision, scrap rate reduction and labor intensity reduction.

The invention relates to a special mandrel tool for accurately grinding the excircle of a main shaft of a high-precision numerical control machine tool. A grinder mandrel body penetrates through a center hole of a to-be-processed main shaft, the right end of the grinder mandrel body extends outwards from a right taper hole, the taper excircle of the left end of the grinder mandrel body is matched with a left taper hole of the to-be-processed main shaft, and a 60-degree taper pressing block is inserted and is pressed against the right taper hole of the to-be-processed main shaft. A taper washer and a spherical washer are pressed against the outer side surface of the 60-degree taper pressing block by fixed parts and are fixed to the grinder mandrel body; two center blind holes are respectively formed in both end surfaces of the grinder mandrel body; and the center blind holes are matched with two high-precision apexes of a cylindrical grinder. When the special mandrel tool is used for processing, the two high-precision apexes of the cylindrical grinder are pressed against the center blind holes in both end surfaces of the tool so as to process, and the apexes do not need to be directly and fixedly contacted and clamped with the to-be-processed main shaft, so that the processing precision of the main shaft and the precision stability of the main shaft are guaranteed. The processing precision of the to-be-processed main shaft and the precision stability of the main shaft are guaranteed.

The two-purpose lead screw and cylindrical grinding machine includes machine body, head stock, tailstock, transverse shift mechanism and longitudinal shift mechanism. The head stock is fixed on the machine body, the movable tailstock is mounted on the tracks on the machine body, and the transverse shift mechanism has transverse tool carriage, which is mounted on the tracks on the machine body, connected to the below first ball lead screw pair and connected to the longitudinal shift mechanism via a second ball lead screw pair. The present invention has reasonable structure, less parts for required grinding function, short length, low production cost, and the functions of both lead screw grinder and the cylindrical grinder.

The invention discloses a designing and manufacturing method of a pad tile for adjusting aviation engine blade rolling. The designing method includes: analyzing feasibility of using the pad tile to adjust the thickness of an aviation engine blade rolling die; designing the inner diameter size and outer diameter size of the pad tile; designing the outer contour of the pad tile and fixing the positions of screw holes; designing eccentric angle position and eccentricity of the pad tile; selecting materials and hardness of the pad tile. The manufacturing method includes: selecting a tubular blank according to designing size; lathing the inner diameter and outer diameter of the tubular blank; grinding the inner diameter of the tubular blank; cutting the tubular blank into an annular piece with the width containing three pad tiles; performing heat treatment on the annular piece; cutting the annular piece into pad tiles; using a cylindrical grinder to grind eccentric excircles; sharp edge rounding and bluing; detecting the pad tiles. By using the pad tile to adjust the thickness of the aviation engine blade rolling die, the service life of the aviation engine blade rolling die can be increased by more than 10 times. Compared with a linear cutting method, the manufacturing method is low in production cost, high in machining precision and time saving.

The invention relates to a grinding wheel dresser, in particular to a cylindrical grinder all-purpose grinding wheel dresser, and belongs to the technical field of machining equipment. The cylindricalgrinder all-purpose grinding wheel dresser comprises a fixed bottom plate, a rotation mechanism, a translation mechanism, a sleeve supporting seat, a sleeve, an upper pressing plate, a carrier spindle and a diamond pen; the bottom plate is provided with the sleeve supporting seat, the upper portion of the sleeve supporting seat is connected with the upper pressing plate through bolts, the sleeveis transversely arranged between the sleeve supporting seat and the upper pressing plate and clamped between the sleeve supporting seat and the upper pressing plate; the rotation mechanism is arrangedin the sleeve supporting seat and can drive the sleeve supporting seat to rotate around the bottom plate; the translation mechanism is arranged in the sleeve, and the translation end of the translation mechanism is connected with the carrier spindle; and the front end of the carrier spindle is connected with the diamond pen. The cylindrical grinding all-purpose grinding wheel dresser can conducttwo-side face, front face, angle and circular arc dressing on a cylindrical grinder grinding wheel, the workpiece machining precision and surface roughness are effectively improved, the cylindrical grinder all-purpose grinding wheel dresser is suitable for grinders of any brand, and the grinding wheel is convenient and fast to dress and is smooth.

A cylindrical grinder is disclosed that includes a support unit including an upper support device and a lower support device, in which an ingot of silicon single crystal is interposed in a direction of axis line between the upper support device and the lower support device and is clampingly held to be rotated around the axis line, and a grinding unit that relatively moves along the direction of axis line of the ingot to traverse grind an outer circumference of the ingot. The upper support device is placed at an upper position and the lower support device is placed at a lower position, so that the support unit clampingly holds the ingot in a state in which the direction of the axis line of the ingot is disposed along a vertical direction.

The invention discloses a high-speed magnetic suspension rotor type axial detection device and a centrifugal compressor and belongs to the technical field of centrifugal compressors and accessories thereof. The high-speed magnetic suspension rotor type axial detection device and the centrifugal compressor are designed for solving the problems that an existing device is inconvenient to assemble and disassemble and the like. The high-speed magnetic suspension rotor type axial detection device comprises a magnetic suspension spindle, a steplike spindle shoulder is arranged on the magnetic suspension spindle, a radial bearing rotor component sleeves the spindle shoulder, and an axial detection ring and a sensor are arranged on the spindle shoulder sequentially and positioned on the outer side of the radial bearing rotor component. The high-speed magnetic suspension rotor type axial detection device and the centrifugal compressor have the advantages that the magnetic suspension spindle can be disassembled from a shell without disassembling the detection ring and the sensor firstly; after the axial detection ring is mounted on the magnetic suspension spindle, a cylindrical grinder can be used for finish grinding of the outer side face of the axial detection ring to guarantee perpendicularity of the detection surface of the axial detection ring and the axis of the magnetic suspension spindle, so that machining difficulty of the axial detection ring is lowered.

The invention discloses a centerless grinding machine for the outer circle of a fully automatic hydraulic cylinder, comprising: a bed, a grinding wheel, a guide wheel, a supporting plate, a positioning guide plate, an automatic feeding device and an automatic discharging device, an automatic feeding device and an automatic lowering device. The feeding device makes the loading and unloading of the cylinder easy and convenient, reducing the labor intensity of the workers; the positioning mechanism composed of the supporting plate and the guide wheel makes the clamping of the cylinder easier and reduces the clamping time; and The positioning mechanism composed of the supporting plate and the guide wheel is better than the top and center frame mechanism of the ordinary cylindrical grinder. The supporting rigidity can be larger, and it is beneficial to the processing of the longer cylinder, and it is easy to realize high-speed grinding and powerful grinding; it can Continuous processing, no need to retract the tool, overcomes the shortcomings of low productivity of traditional processing methods.

The invention discloses an ultrafine electroplating material grinding crusher. The crusher comprises a cylindrical grinder main body, a seal cover and a main body fixing rack, wherein the seal cover is provided with an annular groove matching with the opening of the grinder main body, the outer side of the grinder main body is provided with the main body fixing rack, a gap exists between the main body fixing rack and the outer wall of the grinder main body, the grinder main body, the seal cover and the main body fixing rack respectively move relative to each other, the main body fixing rack is fixedly connected with the seal cover, a grinding assembly is arranged in the grinder main body, driving motors and a controller are arranged outside the grinder main body, the grinding assembly comprises a wheel disc and a center shaft, the center of the wheel disc is provided with a bearing, and the outer ring of the wheel disc is uniformly provided with at least three blades; the knife edge of each of the blades comprises two portions arranged to form an obtuse angle; and the quantity of the driving motors is two, and the two driving motors respectively control the grinding assembly and the grinder main body to reversely rotate. The ultrafine electroplating material grinding crusher has the characteristics of good sealing property and high efficiency.

The invention discloses a cylindrical grinding workpiece clamping device. The cylindrical grinding workpiece clamping device is fixed to a working main shaft of a cylindrical grinder and comprises a chuck main body part, a clamping part, a tip and a transmission mechanism, wherein the chuck main body part has an accommodating part and is driven by a working spindle to rotate; the clamping part is connected with the chuck main body part and is provided with at least two clamping jaws which can be far away from / close to the axis of the chuck main body part; the tip comprises a tip main body part partially accommodated in the accommodating part and a tip part extending from the interior of the accommodating part to one side of the clamping part, and the tip can rotate relative to the chuck main body part; and the transmission mechanism is connected with the clamping part and is used for enabling the clamping jaws to move along the axis of the chuck main body part by increasing / decreasing a radial distance, the clamping part is controlled and driven to automatically clamp and loosen the workpiece through a pneumatic mode, and the machining efficiency is improved.

The invention relates to a roller disc grinding crusher for crushing of metal minerals, industrial minerals, chemical minerals and energy minerals. The roller disc grinding crusher mainly consists ofsuch parts as grinding rollers (2), a grinding roller frame (3), a pivot shaft (4), a grinding disc (6), a motor (8), a hydraulic cylinder (13) and a speed reducer (14). The surface of the grinding disc (6) is conical; the cone angle delta is 120-179 degrees; a projected flange (63) is arranged at the outer periphery; a material layer (5) is formed thereon; and one grinding disc is provided. The grinding rollers (2) are positioned above the grinding disc (6), are supported on the grinding roller frame (3) in a simple support beam support manner, are pressed on the grinding disc (6) by the hydraulic cylinder (13) through the grinding roller frame (3) with the pivot shaft (4) as a fulcrum, and are driven to rotate by the grinding disc (6). The grinding rollers (2) are conical; the cone angles gamma of the conical surfaces are 1-60 degrees; the ratios of the lengths to the large end diameters are larger than or equal to 1; and 1-10 grinding rollers are provided. The roller disc grinding crusher is higher in efficiency compared with a cylindrical grinder, and is simpler in structure and convenient to operate and maintain compared with a high-pressure roller grinder.