86 results about "Grinding - action" patented technology

The invention discloses a method and a system for controlling test lapping of a stamping die. The method comprises the following steps: scanning an actual molded surface of the stamping die to generate actual three-dimensional point cloud data; determining a difference value according to the actual three-dimensional point cloud data and the virtual three-dimensional point cloud data; determining a first to-be-repaired area according to the difference value and a preset tolerance range; simulating deformation conditions of the stamping part under different pressures based on a preset virtual combined simulation model, and predicting a contact area and pressure distribution of the stamping die and the stamping part in an actual stamping process; determining a second to-be-repaired area according to the contact area and the pressure distribution; determining a to-be-polished area according to the first to-be-repaired area and the second to-be-repaired area; a polishing path is generated according to the to-be-polished area through a path planning algorithm; and grinding equipment is controlled to grind the stamping die according to the grinding path. Therefore, the efficiency of the whole test lapping process is improved.

The invention discloses a bone grinding reinforcement learning system and method based on near-end strategy optimization, and the method comprises the steps: learning a relation between a tail end cutting force state and a robot motion in a human trial and error growth mode, and controlling a Markov decision process problem through a robot force; contact force control is optimized through a near-end strategy; designing a reward function and a penalty function of the bone grinding action; performing accelerated training on a robot action decision strategy; and factors influencing the bone cutting effect of the robot are analyzed. On the basis that the robot bone resection control process has the Markov property, the PPO algorithm is adopted to train a controller of the grinding robot, and the robot is guided to obtain a positive value reward; parallelization calculation and closing of graphic display are helpful for increasing the training speed; by coordinating a reinforcement learning strategy of the robot and combining and utilizing priori knowledge of human or a PID control algorithm for guidance, invalid exploration behaviors are avoided, and an efficient learning process is realized.

The invention relates to the field of grinding machinery, and discloses a cylinder body casting grinding device and a grinding process thereof.The device comprises a frame body and a controller, a three-jaw chuck is arranged on the frame body, and a to-be-ground cylinder body is clamped through the three-jaw chuck; a grinding mechanism is further arranged on one side of the frame body and comprises a hydraulic telescopic cylinder and a driving part, the hydraulic telescopic cylinder is fixedly installed on the frame body, the driving part is fixedly installed at the end of the hydraulic telescopic cylinder, and the output end of the driving part is in transmission connection with a grinding shaft; a grinding shell is fixedly arranged at the end of the grinding shaft, multiple stages of grinding wheels are arranged in the grinding shell, an alternating assembly is further arranged in the grinding shell, and the alternating assembly is used for pushing the different stages of grinding wheels to sequentially stretch out of the grinding shell to conduct the grinding action of the cylinder body. By means of the mechanism, real-time replacement of different levels of grinding wheels in the working state in the cylinder body is achieved, and the grinding efficiency is higher.

The invention discloses a method for reducing surface mucosa of a tooth-shaped powder metallurgy die, and belongs to the field of parts for transmitting torque in electric tools and engines. In the jet polishing process of the surface of the middle die step of the tooth-shaped powder metallurgy die, a rubber-diamond mixed material is adopted as a jet abrasive material, the rubber-diamond mixed abrasive material is conveyed into a throwing wheel system in a belt conveying mode, the initial speed of jet fluid is controlled to be 28.3 m / s by adjusting the centrifugal force of an impeller, and the jet polishing process is completed. Million of grinding materials make contact with the surface of the tooth-shaped powder metallurgy die in a sliding mode, the grinding effect is achieved under efficient impact, and finally the polishing effect is achieved. According to the invention, the discharge stress can be obviously eliminated, the surface smoothness is improved, the smoothness is increased, the purpose of preventing powder from sticking films is achieved, and meanwhile, the yield can be greatly increased.

The utility model provides a grinding device which comprises a grinding medium disc, and grinding materials are arranged on the grinding medium disc. The moving platform is used for bearing the grinding medium disc and driving the grinding medium disc to move along a certain track; the driving mechanism provides driving power for the motion platform; the base is used for supporting the motion platform; the grinding disc is used for keeping the workpiece to abut against the grinding material on the grinding medium disc; the track is formed by superposition of x-axis simple harmonic motion and y-axis simple harmonic motion. According to the grinding device, only simple harmonic motion of the motion platform is executed, symmetrical grinding of the workpiece can be achieved, and the grinding effect of the workpiece is more centrosymmetric; in addition, the traversal degree of the motion trail formed by the grinding action to the abrasive paper is high, and the abrasive paper can be fully utilized without additionally arranging other linear motion driving devices.

The embodiment of the invention discloses a probe card testing method. The probe card testing method comprises the following steps that S1, a detection piece is installed at a set position on the back face of a probe card; s2, enabling the front surface of the probe card to face downwards, and fixedly mounting the probe card on a first fixing tool; s3, mounting the wafer on a second fixing tool; s4, the moving mechanism drives the second fixing tool to move, and enables the grinding needle area on the wafer to abut against all the needle points on the probe card; s5, polishing a needle point on the probe card; s6, adjusting a temperature control structure on the second fixing tool to change the temperature of the wafer; s7, the moving mechanism upwards lifts the second fixing tool, and the detection piece and the image acquisition machine carry out data acquisition; and S8, analyzing the data. According to the embodiment of the invention, the wafer on the second fixing tool can be driven to complete the needle grinding action through the moving mechanism, and the temperature control structure can be used for cooling and heating the wafer, so that the test work of the wafer under the three-temperature condition is realized.

The invention discloses multi-angle grinding equipment for a diamond roller, which aims at the grinding process of the diamond roller, takes the turning machine tool principle as the basis, and takes the effect of grinding the outer edge surface of a to-be-processed roller body by gradually approaching a grinding head to the to-be-processed roller body rotating at a constant speed. The linear sliding action of the sliding seat and the angle deflection action of the adjusting table are used for achieving the multi-angle grinding action, specifically, the angle deflection action of the co-moving rotating plate relative to the adjusting table is achieved, a horseshoe-shaped pipe seat corresponding to the co-moving rotating plate is additionally arranged, and an oil seal sliding block and an inner oil pipe corresponding to the rotation of the co-moving rotating plate are arranged in the horseshoe-shaped pipe seat. Media such as hydraulic oil with small compression amount are filled in the adjusting table, the abnormal deflection action of the adjusting table is indirectly fed back by utilizing the oil pressure of the hydraulic oil, and the angle deflection process of the adjusting table is directly stabilized through the oil injection and discharge action of the hydraulic oil, so that the grinding precision of a to-be-machined roller body is maintained, and the problem of excessive grinding or insufficient grinding amount is avoided.

The invention belongs to the technical field of electric vehicle machining, and particularly relates to electric vehicle accessory grinding equipment which comprises a base part, an inner fixing part is arranged at the axis of the base part, shaking parts are symmetrically arranged on the left side and the right side of the bottom of the inner wall of the base part, and outer grinding parts are arranged on the tops of the shaking parts. According to the device, the rough surface of the outer surface of the hub can be ground cleanly through the wall attaching scraping plates on the two sides under the scraping effect, the grinding acting force attached to the hub can be remarkably improved due to the fact that the pushing and extruding acting force of the segmented telescopic rod is increased, and therefore the extruding force of the wall attaching scraping plates can be properly controlled in the grinding process; according to the hub polishing device, abrasion to the outer surface of a hub is reduced, the polishing effect is achieved under the condition that the appearance of the hub is not obviously changed, the polishing work does not need to accurately control the polishing component to move, and therefore the requirement for precision of the device is lower, and the technical difficulty and cost of production are reduced.

Provided is a device for observing and positioning a sharpening angle of a cutting edge. The device includes a spirit bubble for observing a change of a sharpening angle of a cutting edge and positioning the sharpening angle of the cutting edge, and a base for fixing the device on a knife body. The spirit bubble is rotatably connected to the base for adjusting an angle between the spirit bubble and the base. The device enables, in a dynamic process of grinding a cutting edge of a knife, a grinder to continuously remain in a correct sharpening angle range and grind the cutting edge in accordance with a correct sharpening angle of the knife when holding the knife to perform a grinding action, and also meets a requirement for controlling sharpening angles of cutting edges of knives with various edge shapes in respective edge grinding processes of the knives.

A vertebral plate grinding control method and a surgical robot system. The vertebral plate grinding control method comprises: acquiring a medical image of a vertebral plate, and establishing a three-dimensional vertebral plate model on the basis of the medical image; acquiring a movement stroke range of a grinding tool, and establishing a three-dimensional grinding model on the basis of the movement stroke range; and intersecting the three-dimensional grinding model with the three-dimensional vertebral plate model to acquire a region to be ground of the vertebral plate. The method can reduce the operation difficulty and requirements, and improve the efficiency. In addition, a concrete three-dimensional grinding model can enable a doctor to have a clearer and more intuitive understanding of grinding actions, such that appropriate regions to be ground can be respectively determined for three-dimensional vertebral plate models in different forms, and the efficiency and surgical quality can thus be improved.

The invention relates to the technical field of building floor surface mortar polishing, in particular to a building construction ground dedusting and cleaning device which comprises a frame and a lifting assembly arranged on the frame, and a supporting plate is connected to the lifting assembly; the coarse grinding assembly is arranged on the supporting plate and comprises a coarse grinding disc, and the coarse grinding assembly can perform coarse grinding action on the mortar floor through the coarse grinding disc; the follow-up pressurizing mechanism is arranged on the rough grinding assembly, and the follow-up pressurizing mechanism can adjust the grinding pressure on the rough grinding disc through the rough grinding assembly when the rough grinding disc moves; the fine grinding assembly is arranged on the supporting plate and used for conducting fine grinding treatment on the mortar floor, when the thickness of mortar acting on the floor through the coarse grinding disc changes, the acting force of the coarse grinding disc on the mortar can be automatically adjusted through the follow-up pressurization mechanism so as to adapt to the mortar with different thicknesses, and it is ensured that the mortar is comprehensively cleaned.

The application discloses a kind of work roll box grinding full-automatic overturning and supporting system, belong to machine tool technical field, comprising: support seat first base is set on common base, sliding component is set on first base, support seat second base and sliding component sliding connection, second base drive component is set on support seat first base, bearing box support is set on support seat second base, support seat detection component is set on support seat first base;Lifting assembly is set on positioning support, roll support is set on lifting assembly, soft landing detection component is set on positioning support;Guide rail shell is set on common base, box turning drive component is set on guide rail shell, box turning support is set on arc-shaped overturning gear, box turning detection component is set on guide rail shell.The application can avoid the various interference that occurs during work roll box grinding action process overturning roll box.

The utility model belongs to the technical field of feed mixing devices, and particularly relates to a laying hen feed mixing device which comprises a support, one end of the support is fixedly connected with a mixing cabin shell, the bottom of the mixing cabin shell is fixedly connected with a pushing mechanism, and the top of the mixing cabin shell is fixedly connected with a second motor. A grinding cabin shell is fixedly connected to the top of the mixing cabin shell, and a feeding channel is fixedly connected to one side of the grinding cabin shell; through the grinding mechanism, various caked feed raw materials can be poured into the feeding channel to enter the grinding cabin, so that the feed raw materials are crushed under the rotary grinding action of the grinding disc, subsequently enter the mixing cabin to be stirred and mixed, and finally enter the pushing mechanism to be discharged, and the effect of crushing various feeds is achieved; the problems that laying hens are difficult to directly eat due to the fact that the laying hen feed is inevitably affected with damp and agglomerated during storage, and various feed raw materials are difficult to mix due to agglomerated feed raw materials are solved.

The invention provides a seasoning processing device, and belongs to the technical field of seasoning grinding processing. Comprising a bottom fixed cylinder assembly, a tail end grinding assembly, an upper fixed cylinder component, a middle rotary cylinder assembly, a combined grinding assembly and a material cleaning component, a middle rotary cylinder body is rotationally connected between the bottom fixed cylinder body and the upper fixed cylinder body, and a transmission rotary shaft can synchronously drive the middle rotary cylinder body to slowly rotate while driving tail end grinding teeth located on the bottom fixed cylinder body to rotate and grind; when the middle rotating cylinder body slowly rotates, an external fixed gear at a fixed position can be matched with a top rotating gear, so that primary grinding teeth in the middle rotating cylinder body can be driven to rotate through a transmission mechanism; a grinding rotary plate at the inner bottom end of the middle rotary cylinder and an inner grinding fixed disc fixed at the inner top end of the bottom fixed cylinder can be synchronously driven to perform grinding action, so that seasoning raw materials can be ground and processed in a three-dimensional and multiple manner; and in cooperation with the material cleaning component in transmission connection, discharge of seasoning processing materials can be accelerated.

The invention discloses a device for trimming a laser cladding layer on the surface of a columnar workpiece, and belongs to the field of rotary grinding. The device comprises a base, two three-jaw chucks are coaxially and symmetrically arranged on the base, a columnar workpiece to be trimmed is clamped between the two three-jaw chucks, a support is connected to the base in a sliding mode, a hydraulic rod is fixedly connected to the upper portion of the support, a polishing roller is installed at the output end of the hydraulic rod, and when the three-jaw chucks drive the columnar workpiece to rotate in the first direction, the polishing roller rotates in the second direction. When the three-jaw chuck drives the cylindrical workpiece to rotate in the first direction, the surface protrusion of the cylindrical workpiece pushes the grinding roller to be away from the cylindrical workpiece, and when the three-jaw chuck drives the cylindrical workpiece to rotate in the second direction, the grinding roller gradually gets close to the cylindrical workpiece along with the number of rotation turns of the cylindrical workpiece; according to the device, the three-jaw chuck is controlled to rotate in the first direction to complete the tool setting action and rotate in the second direction to complete the grinding action, the effect of rapidly grinding the columnar workpiece is achieved, the cost is reduced, and the efficiency is improved.

The application discloses a ceramic-reinforced hard alloy sintered electrode for surface build-up welding of oil and gas workover tools and a manufacturing method thereof. The electrode is prepared from multi-prism hard alloy particles and soft metal. The multi-prism hard alloy particles utilize the excellent grinding effect of TiB2 and TiC composite ceramic materials at high temperatures to improve the performance of the hard alloy material in the grinding process. The WC, TiC, TiB2, SiC, Mo and Co composite sintered material is used to improve the hardness and grinding performance of the hard alloy material by optimizing the component, content and structure characteristics of the hard alloy material, thereby improving the grinding and milling effect on high-strength steel pipes above P110. The soft metal material is a Cu-Ni-Zn-Mn-Si system powder, which effectively improves the strength and wear resistance of the sintered electrode matrix soft metal itself, solves the problems of weak impact resistance, low hardness and poor cutting performance on P110 high-strength steel of the traditional grinding and milling tool, and improves the grinding and milling effect and working efficiency.

The invention relates to a paint removal method, a robot paint removal system and a computer readable storage medium. The method comprises the steps that a polishing path is generated in a to-be-depainted area of a workpiece, and a plurality of polishing path points are generated according to the polishing path; grinding parameters corresponding to the multiple grinding path points are obtained, and a grinding tool is controlled to conduct grinding action on the multiple grinding path points according to the grinding parameters; acquiring a surface image of the to-be-depainted area, and determining a depainting state of each polishing path point according to the surface image; and the polishing parameters corresponding to the polishing path points with the paint removal states not reaching the target paint removal state are adjusted, and based on the adjusted polishing parameters, a polishing tool is controlled to polish the corresponding polishing path points. By adopting the method, the paint on the surface of the workpiece can be specifically and uniformly removed.

The invention provides a stirring structure and a fluidized stabilized soil pulping station. The stirring structure comprises a stirring frame, a stirring cavity fixedly arranged on the stirring frame, a stirring assembly rotationally arranged in the stirring cavity, a first driving mechanism for driving the stirring assembly to rotate, and a second driving mechanism for driving the stirring assembly to be separated from the stirring cavity; the stirring assembly comprises a stirring cavity and a stirring assembly, the stirring cavity is provided with a hemispherical bottom surface, the stirring assembly comprises a stirring shaft and a hollow hemispherical stirring part which is concentrically and fixedly connected with the stirring shaft and matched with the hemispherical bottom surface, and a plurality of filtering holes are formed in the stirring part. And the grinding action is realized in the pulping process by matching the spherical surface, so that the particle size is smaller, and mud and water are more uniformly mixed.

The invention discloses a ceramic reinforced hard alloy sintered welding rod for surface laying welding of an oil gas well repair tool and a manufacturing method of the ceramic reinforced hard alloy sintered welding rod, the ceramic reinforced hard alloy sintered welding rod is prepared from polygonal hard alloy particles and soft metal, and the polygonal hard alloy particles improve the performance of a hard alloy material in the grinding process by utilizing the excellent grinding effect of a TiB2 and TiC composite ceramic material at high temperature; wC, TiC, TiB2, SiC, Mo and Co composite sintering materials are adopted, the hardness and the grinding performance of the hard alloy material are improved by optimizing the components, the content and the structural characteristics of the hard alloy material, and then the grinding and milling effect of the hard alloy material on high-strength steel pipes of P110 or above is improved. Cu-Ni-Zn-Mn-Si series powder is adopted as a soft metal material, so that the strength and the wear resistance of the sintered welding rod matrix soft metal are effectively improved, the problems that a traditional milling tool is weak in impact resistance, low in hardness and poor in cutting performance on P110 high-strength steel are solved, and the milling effect and the working efficiency are improved.

The invention provides a silicon carbide electric spark machining method which comprises the following steps: carrying out electric spark machining on a silicon carbide workpiece according to a preset condition to obtain a rough workpiece with a recast layer; filling a tool electrode and the rough workpiece with abrasive particle matrix powder; the polarity of the tool electrode and the polarity of the rough workpiece are exchanged, electric discharge machining is conducted on the rough workpiece, and an abrasive particle matrix layer is obtained on the tool electrode; and the recasting layer is removed through the abrasive particle matrix layer, and a target workpiece is obtained. The molten aluminum powder and diamond powder are plated on the surface of the electrode to form the abrasive particle matrix layer, the recasting layer on the surface of silicon carbide is removed through the grinding effect of abrasive particles, the electrode and a machining platform do not need to be replaced, electric spark machining of silicon carbide and elimination of the recasting layer on the surface of silicon carbide can be completed only through one electrode, and the machining efficiency is improved. The technological process is simple and convenient.

The invention provides a coffee production system with a spray drying function, and relates to the technical field of coffee production. The coffee production system with spray drying function comprises: a housing; the outer cylinder is connected into the shell; the inner cylinder is connected into the outer cylinder, and a plurality of sieve holes are formed in the circumferential surface of the lower part of the inner cylinder; the atomizing disc is arranged in the inner cylinder and communicates with the hot air pipe and the liquid inlet pipe, and the atomizing disc can rotate under the action of aerodynamic force of the hot air pipe; and the grinding mechanism is arranged in the inner cylinder, and the grinding mechanism is used for grinding the atomized and dried powder particles. The atomizing disc is driven to rotate through high-speed airflow of the hot air pipe, motor-free atomization is achieved, energy consumption is reduced, lubricating oil pollution is avoided, atomized and dried coffee particles enter the inner cylinder, and under the grinding action of the grinding mechanism, the coffee particles with the particle size meeting the requirement fall into the outer cylinder through the sieve holes and then are taken out of the outer cylinder, and therefore the coffee particles can be atomized and dried. The granularity consistency of the finished coffee powder is ensured, so that the solubility of the finished coffee powder is improved.

The application discloses a silicon carbide grinding process and belongs to the field of silicon carbide. The silicon carbide grinding process comprises the following steps: S1, parameter setting, detecting the shape and size of a silicon carbide base body and setting parameters of a grinding action according to the shape and size; S2, first grinding, performing rough grinding treatment on the silicon carbide base body according to the parameters set in step one; S3, second grinding, performing fine grinding treatment on the silicon carbide base body according to the parameters set in step one, and obtaining a silicon carbide wafer finished product; and S4, cleaning, cleaning and spin-drying the silicon carbide wafer finished product after the second grinding, and outputting the cleaned silicon carbide wafer finished product. The silicon carbide wafer finished product can be simultaneously improved in grinding efficiency and grinding precision by setting parameters for rough grinding and fine grinding of the silicon carbide base body according to the shape and size of the silicon carbide base body.

The application relates to the technical field of linear guide rail machining, and particularly discloses a grinding tool for machining linear guide rail sliders and a grinding method thereof, which comprises a grinding mechanism for grinding the sliders and a forward clamping mechanism for fixing the sliders, the forward clamping mechanism comprises a mounting structure and a forward clamping structure, the forward clamping structure is mounted on the mounting structure, and the mounting structure serves as the support of the forward clamping structure; the mounting structure is provided with a first mounting station and a second mounting station; the forward clamping structure comprises a first clamping assembly and a second clamping assembly, the first clamping assembly is used for clamping the sliders before grinding treatment, and the second clamping assembly is used for clamping the sliders after grinding treatment; the forward clamping mechanism in the area where the grinding mechanism is located is far away from the sliders, the travel and grinding action of the grinding mechanism are avoided from being affected, the sliders after grinding are clamped by the second clamping assembly, and therefore, a better clamping effect is achieved.

The utility model relates to the technical field of grinding equipment, and discloses a through pipe wire surface grinding machine which comprises an electric box, a power switch is fixedly connected to the lower portion of the front side of the electric box, a workbench is fixedly connected to the upper portion of the electric box, and a platform driving motor is fixedly connected to the right rear side of the upper portion of the workbench. The output end of the platform driving motor is fixedly connected with a screw, the outer side of the screw is in threaded connection with a sliding platform, the upper portion of the sliding platform is fixedly connected with a telescopic air cylinder, the output end of the telescopic air cylinder is fixedly connected with a clamping jaw air cylinder, and the lower portion of the front side of the electric box is fixedly connected with a button box. The left side of the upper portion of the button box is fixedly connected with a scram button, and the right side of the upper portion of the button box is fixedly connected with a start button. According to the utility model, a linkage structure of the platform driving motor, the sliding platform, the telescopic cylinder and the clamping jaw cylinder is adopted, so that the abrasive paper can clamp the through pipe wire and finish the surface grinding action, and the surface grinding stability of the through pipe wire is ensured.

The visual operation power handle comprises an operation power handle body and an electronic endoscope sheath, an electronic endoscope is installed in the electronic endoscope sheath, the operation power handle body comprises a grinding head installation cylinder and a grinding head rod installed in the grinding head installation cylinder in a matched mode, and the front end of the grinding head rod is provided with a grinding action part exposed out of the open end of the grinding head installation cylinder; the electronic endoscope sheath is fixedly mounted on the grinding head mounting cylinder, and at least the position, corresponding to the lens part of the electronic endoscope, of the electronic endoscope sheath clings to the surface of the grinding head mounting cylinder. Heat generated when the grinding action part carries out grinding and planing work is conducted to the surface of the grinding head mounting barrel through the grinding head rod adaptively mounted in the grinding head mounting barrel and then is transferred to the electron endoscope sheath, and then heating and demisting effects are generated on an electron endoscope lens in the electron endoscope sheath, so that the surgical field definition is effectively improved; and the accuracy of surgical operation is ensured.

The present application relates to a top grinding structure of a wafer grinding machine and a wafer grinding machine, and relates to the technical field of wafer grinding machines. The top grinding structure of the wafer grinding machine includes a mounting base and a plurality of grinding components vertically slidably connected to the mounting base. An internal pressure component is installed in the grinding component, and the internal pressure component is used to apply pressure to the grinding disc, so that the pressure P received by each point of the grinding disc decreases as the distance r from the center point increases. A wafer grinding machine includes: a support structure, a top grinding structure, and a bottom drive structure. The present application has the effect of enhancing the grinding effect.

The invention discloses a multi-stage separation process and device based on comprehensive utilization of coarse whiting marble resources, belongs to the technical field of mineral aggregate screening, is based on a module integration type mineral aggregate multi-stage screening system, and integrates crushing-screening-material returning closed-loop circulation front-section separation of coarse crushing and fine crushing. According to the process route of collaborative operation with reselection and flotation combined rear-section separation, comprehensive advantages of efficient separation, high resource recovery rate and high adaptability are achieved through accurate particle size control, staged efficient separation and whole-process collaborative optimization, an ultra-dynamic screening mode of a double-layer flip-flow screen and a fine material separation assembly is adopted, the separation effect is improved, and the product quality is improved. Particularly, a fine material sorting assembly is improved, a screening barrel and a circular bottom plate which are mounted in an inner and outer sleeving manner serve as material conveying surfaces, mineral powder particles are driven to be conveyed along a spiral path through a material stirring and grinding assembly, grinding action is matched, qualified powder is dynamically screened through an upper partition and a lower partition, and the screening penetration rate is increased.

The invention discloses a superhard heavy-load steel rail grinding wheel and a preparation method thereof.The structure of the grinding wheel is a pin-disc type structure, the grinding wheel specifically comprises a cylindrical superhard pin body and a grinding wheel body, the cylindrical superhard pin body serves as a framework playing a main grinding role and is embedded in the grinding wheel body, and then the cylindrical superhard pin body and the grinding wheel body are pressed together to form a parallel grinding wheel; according to the manufactured super-hard heavy-load steel rail grinding wheel, the super-hard pin body and the grinding wheel body have the same forming density, good balance and excellent performance, the bending strength reaches 86.6 MPa, the Rockwell hardness reaches 68-71 HRA, the rotation strength is not broken within 30 seconds at the 1.5-time working speed, and the grinding wheel has the advantages that the grinding wheel is not prone to breakage at the working speed of 50 m / s; the steel rail has good sharpness, wear resistance, heat dissipation and stability in the process of grinding the steel rail under the grinding pressure of 260 Kg / cm < 2 >, the surface of the steel rail is free of burn blue spots, surface lines are clear and uniform, the surface roughness Ra is within the range of 1-4 microns, and the cost is controlled at a low level.

The invention discloses a coal mine engineering tunneling device provided with a supporting device, and relates to the technical field of tunneling devices.The coal mine engineering tunneling device comprises a machine body, a coal loading shovel plate is installed on the machine body, a cutting head is further installed on the machine body, and the cutting head is located at the upper end of the coal loading shovel plate; the plurality of tooth holders are fixedly mounted on the cutting head in a spiral manner, and a cutting tooth is rotationally mounted on each tooth holder in a sealing manner; and the driving assembly is used for providing driving for operation of the cutting head. The cutting head has the advantages that the cutting picks can revolve and rotate in the rotating process of the cutting head, so that the whole cutting picks can be in more uniform contact with coal rocks, the impact load and grinding action borne by the cutting picks are uniformly distributed, the problem that the service life is greatly shortened due to excessive wear of local areas of the cutting picks is avoided, and the cutting head is suitable for large-scale popularization and application. And meanwhile, the water spraying dust falling speed can be synchronously controlled according to the autorotation speed of the cutting teeth, so that the dust falling effect is ensured, and meanwhile, the problem of water resource waste is avoided.

The invention relates to the field of substance dissolving equipment, in particular to an indissolvable substance dissolving device. The device comprises a dissolving barrel and a top cover fixed by bolts, a lower pressing plate is arranged at the bottom of the barrel, a stirring shaft with stirring blades is arranged in the barrel, and the bottom of the stirring shaft is connected with an upper pressing plate matched with the lower pressing plate. The driving mechanism comprises a driving shaft driven by a motor, the sleeve is matched with an arc-shaped driving piece on the inner wall of the top cover through a driving rod, the driving rod drives the sleeve to ascend and descend when sliding along the inclined face of the driving piece, and the upper pressing plate generates periodic pressing and grinding actions. The inflation mechanism comprises pistons in two fixed cylinders, the pistons are driven by a pull frame to compress a second spring when a mounting sleeve ascends and descends, gas enters an inclined gas outlet pipe through a one-way valve, and two-way bubble flow is formed by nozzles at the top and the bottom of the gas outlet pipe. Particle surface passivation layers are damaged in the pressing and grinding process, particle aggregation is prevented through bubble turbulence, and material accumulation is avoided through a nozzle at the lowest point of an air outlet pipe. According to the scheme, the decomposition efficiency of indissolvable substances is improved through the synergistic effect of pressing and grinding and bubble disturbance.