145results about How to "Precise processing" patented technology

The invention relates to the field of circuit board processing, and discloses a printed circuit board splitting device, which comprises a workbench, the top end of the workbench is fixedly provided with a protective cover, and the outer wall of the protective cover is connected with an opening and closing door through a hinge; the movable cleaning assembly is arranged on the workbench and used for cleaning dust on the surface of the circuit board while moving the circuit board; the supporting and collecting assembly is arranged on the workbench and used for limiting the circuit board and collecting impurities generated during machining; the processing assembly is arranged on the workbench and used for cutting and splitting the circuit board; the auxiliary assembly is arranged on the workbench and used for assisting the machining assembly; and the placing assembly is arranged on the workbench and is used for placing the unprocessed circuit board and the processed circuit board. And through cooperation of internal structures of the movable cleaning assembly, the effect that residual dust and chippings on the surface of the circuit board are effectively cleaned through the cleaning device while the circuit board is accurately moved is achieved.

The invention provides atomic cluster powder, a manufacturing method thereof and a high-temperature alloy crack defect repairing method, high-frequency pulse discharge impact is continuously performed on a target material through a high-frequency pulse power supply, atomic-scale cluster powder is generated, and the atomic cluster powder is obtained. The repairing method comprises the following steps: cleaning and drying a high-temperature alloy material component with a crack defect, and putting the high-temperature alloy material component in a glove box; the atomic cluster powder is piled above the crack defects of the high-temperature alloy material component, and vibration treatment is carried out, so that the atomic cluster powder fully permeates into the crack defects of the high-temperature alloy material component; and the high-temperature alloy material component is put into a heat treatment furnace, the atomic cluster powder is melted, and metallurgical repair of the crack defect is achieved. According to the method, high-temperature alloy crack defect repair and the size of a connecting material are reduced to the atomic scale, same-material repair of crack defects of a high-temperature alloy material component can be achieved at the low temperature, and the method has the advantages that the process is simple, energy consumption is low, and the high-performance high-temperature alloy material is high in applicability.

The present application provides a stainless steel template welding tool, which relates to the field of tooling equipment. The stainless steel template welding tool includes: an operating platform, which is provided with an assembly area for placing the template components to be welded; a fixed frame, which is fixed on the operating platform in an L shape and surrounds the edge of the assembly area; a side clamping mechanism, including: a first driving component and a side pressure frame, the first driving component is used to drive the side pressure frame to move in the direction close to or away from the long side of the fixed frame; an end clamping mechanism, including: a second driving component and an end pressure frame, the second driving component is used to drive the end pressure frame to move in the direction close to or away from the short side of the fixed frame; a vertical rib limiting part, which is used to limit the vertical ribs; a top clamping mechanism, including: a plurality of third driving components, and a plurality of third driving components are used to respectively clamp and release the frame and the transverse ribs. The stainless steel template welding tool can solve the deformation problem generated during the production process of the stainless steel template while ensuring accurate processing.

The utility model discloses an internal high pressure forming pipe fitting laser cutting clamp, which comprises a bottom plate, two groups of profiling clamps and a pressing assembly, the two groups of profiling clamps comprise a first profiling clamp and a second profiling clamp, the two sides of the bottom of the first profiling clamp are supported and fixed on the bottom plate through stand columns, and the two sides of the bottom of the second profiling clamp are supported and fixed on the bottom plate through stand columns. A first profiling groove is formed in the top of the first profiling clamp, the second profiling clamp is fixed to the bottom plate, a second profiling groove is formed in the top of the second profiling clamp, and the two pressing assemblies comprise the first pressing assembly and the second pressing assembly. The first pressing assembly is fixed to the side edge of the first profiling clamp and corresponds to the upper portion of the first profiling groove, and the second pressing assembly is fixed to the bottom plate and corresponds to the upper portion of the second profiling groove. By means of the mode, the laser cutting clamp for the internal high-pressure forming pipe fitting can machine products more accurately, and is simple in structure, convenient to operate and not prone to damaging the products.

The utility model discloses a general mechanical equipment manipulator convenient for tissue replacement, and relates to the technical field of general mechanical equipment manipulators, the general mechanical equipment manipulator convenient for tissue replacement comprises a connecting base and an operation direction adjusting assembly, a fixing bolt is arranged in the connecting base, and a sliding seat is slidably connected in a sliding rail. The operation direction adjusting assembly used for adjusting the operation direction is arranged on the top of the sliding base, and a second adjusting arm is arranged at the end of the first adjusting arm. According to the general mechanical equipment manipulator convenient for tissue replacement, a first positioning key and a second positioning key are used for limiting and clamping the mounting end part of a module tissue, so that the module tissue is mounted, the module tissue is convenient to replace and maintain, the service life of the module tissue is prolonged, and after the module tissue is mounted, a second motor is started to drive the module tissue to be replaced. The installation frame rotates to drive the module organizations to rotate, and therefore cutting, grinding, polishing, punching and other operations can be conducted according to different module organizations.

The invention relates to an electric cabinet metal plate milling device which comprises a machine tool and a vacuum adsorption carrying table assembly of the machine tool. The assembly comprises an adsorption platform deck, a base and an integrated valve terminal, a negative pressure through hole in the adsorption platform deck is divided into a negative pressure concentration area and a central adsorption area, the bottom is connected with the integrated valve terminal through a pipe joint, and a proximity sensor is arranged on the outer side. Suction force of different areas is subjected to partition management through the integrated valve terminal, and the adsorption force can be dynamically adjusted according to the position of the milling cutter. When the milling cutter approaches, the valve opening degree of the corresponding area is adjusted through the integrated valve terminal, reasonable distribution of suction force is achieved, and the suction requirement of the milling cutter during machining at different positions of a thin plate can be met even if the total suction force is constant. In addition, a chip blowing mechanism is further arranged, chips can be blown away, false alarm of the sensor is prevented, machining reliability and efficiency are ensured, and the milling quality of the electric cabinet thin plate with the thickness being 1 mm is improved.

The utility model belongs to the technical field of drilling and riveting machines, and discloses an upper actuator of an automatic drilling and riveting machine. The device comprises an AC swing head unit, the AC swing head unit comprises a C-axis driving motor, the driving end of the C-axis driving motor is connected with a cross beam, the two ends of the cross beam are provided with an A-axis driven end and an A-axis driving end respectively, and a multi-station sliding seat unit is connected between the A-axis driven end and the A-axis driving end; the multi-station sliding seat unit comprises a frame, a sliding seat is slidably connected to the interior of the frame, a drilling spindle mechanism, a gluing mechanism, a riveting mechanism, a target capturing camera, a milling mechanism and a pin inserting mechanism are linearly and sequentially arranged in the sliding seat, and a pressure foot unit is further fixedly connected to the outer side of the frame. The device can control each machining mechanism to move, is high in efficiency and accurate in moving position, has the capability of monitoring the working condition of each station in real time, and can effectively prevent machine collision in the machining process.

The utility model provides iron wire stamping and drilling equipment. The iron wire stamping and drilling equipment comprises a wire feeding disc, a straightening assembly, a stamping assembly and a center hole machining assembly. The wire feeding disc is used for continuously conveying wound iron wire raw materials backwards. The straightening assembly is used for straightening the iron wires; through sequential arrangement of the wire feeding disc, the straightening assembly, the stamping assembly and the center hole machining assembly and working procedure cooperation, stamping forming and drilling machining of a large number of iron wires can be automatically and efficiently completed in a high-quality mode, and the machine is suitable for assembly line type production. After the iron wire is straightened, the hydraulic punching machine cuts off and punches the iron wire at a time, meanwhile, the iron wire is positioned based on the arrangement of the die structure, and accurate machining of the center hole machining assembly is guaranteed.

The invention discloses a laser processing method for the surface of a rotating body. The method comprises the steps that a galvanometer is installed on a three-dimensional movement mechanism, and a rotating body to be machined is arranged on a rotating mechanism; configuring laser processing parameters, and importing the laser processing parameters into the to-be-processed rotating body model; calibrating the spatial position relation of the three-dimensional movement mechanism, the galvanometer and the rotating body to be machined, and correcting the galvanometer; planning a laser processing track of the galvanometer and a motion track of the three-dimensional motion mechanism; and the rotating mechanism is started to work, so that the to-be-machined rotating body is in a rotating state, the rotating speed and position of the to-be-machined rotating body are collected, the center of the galvanometer is moved to the initial position of laser machining by controlling the three-dimensional movement mechanism to work, and then laser machining is conducted. By monitoring the position of the laser beam and the rotating speed of the rotating body workpiece in real time, it is ensured that the laser beam can accurately follow the surface of the rotating body to be machined for machining, and the machining precision and the machining efficiency are improved.

The present invention relates to the technical field of automatic screw locking machines, and specifically to a screw locking mechanism and an automatic screw locking machine, comprising a base, a direction adjusting structure is provided on the top side of the base, a fixed length structure is provided on the inner side of the direction adjusting structure, the direction adjusting structure is connected to an adjusting structure, an end of the fixed length structure is connected to a locking structure, a lifting structure is connected between the base and the direction adjusting structure, and a fixing structure is installed on the base; the direction adjusting structure can be used to quickly adjust the angle of a screw bit according to the screw hole position of a workpiece, the fixed length structure can be used to accurately process the screw hole positions of different workpieces, the adjusting structure can further improve the adjustment accuracy of the device, the locking structure can be used to lock screws at different heights of the workpiece, the lifting structure can drive the device to lift and lower stably, the screws can be locked by the screw bit, and the workpiece can be fixed by the fixing structure, thereby improving the processing efficiency.

The utility model discloses steel plate groove machining equipment, and belongs to the technical field of steel plate machining equipment. Comprising a base, a milling lifting mechanism, an electric cabinet, a cutting turnover mechanism, a groove milling angle adjusting mechanism and a groove milling depth adjusting mechanism. The milling lifting mechanism comprises a stand column fixed to the top face of the base, a rail is fixed to the stand column, a sliding seat is arranged on the rail in a sliding mode, a push plate is arranged at the bottom of the sliding seat, and a spring is arranged between the push plate and the sliding seat. An electric lifting mechanism is fixed between the bottom surface of the push plate and the base; the cutting turnover mechanism comprises a rotating disc rotationally installed on the sliding seat, the outer portion of the front end of the rotating disc is of a gear ring structure, and a rear side plate seat is fixed to the front end of the rotating disc; according to the steel plate groove machining equipment, double-face groove machining can be carried out without turning over a steel plate by turning over the milling cutter, the height of the milling cutter is controlled through electric lifting, and the machining precision can be guaranteed.

The invention relates to the technical field of glass processing, and discloses a processing method of AG (anti-glare) glass, which is high in processing precision and efficiency, low in product breakage rate and processing cost and low in skill requirements on operators, and comprises the following steps: S1, carrying out sand blasting on a glass incoming material, so that a sand surface is formed on the front surface of the glass, and a non-sand surface is formed on the back surface of the glass; s2, cutting the sand-blasted glass to form a plurality of glass sheets; s3, a laser beam is emitted from the non-sand surface of the glass sheet, so that a chamfering pretreatment area, a hole pretreatment area and a hole chamfering pretreatment area are formed in the glass sheet through laser internal carving; s4, putting the glass sheet into an etching solution for chemical etching; s5, carrying out appearance splitting on the glass sheet so as to form a chamfer on the edge of the glass sheet; and S6, carrying out hole splitting on the glass sheet by adopting ultrasonic wave under-liquid splitting, so that hole sites are formed in the hole pretreatment area and the hole chamfering pretreatment area on the glass sheet.

The invention relates to the technical field of laser welding, and discloses a ship metal part laser welding device which comprises a base, a part plate is fixedly connected to the top of the base, a peripheral plate is fixedly connected to the top of the base, a triangular supporting plate is fixedly connected to the front portion of the base, and a triangular supporting plate is fixedly connected to the front portion of the part plate. A collecting box is fixedly connected to the inner wall of the peripheral plate, a motor, an aligning mechanism, a stabilizing mechanism and a cleaning mechanism are installed at the top of the base, a welding table is installed at the top of the peripheral plate, and the output end of the motor is fixedly connected with an inner circular plate. And vibration and swing of the part in the moving process are reduced, at the moment, the part can be extruded between the two extrusion arc plates, it is ensured that the workpiece cannot move or rotate in the machining process, the relative position between a machining tool and the workpiece is ensured, and therefore accurate machining is achieved.

The invention discloses a drilling method for a right-angle square groove, and relates to the field of printed circuit board processing, and the drilling method comprises the following steps: 1, determining the selection of a minimum drill bit according to the thickness of a processed board body and the number of laminated boards, determining the size of the drill bit supported by the thickness and the number of laminated boards, enabling the drill bit with a smaller diameter to generate a smaller R angle, and enabling the drill bit with a smaller diameter to generate a smaller R angle; the drilled right-angle square groove looks closer to an ideal right-angle shape; secondly, the drill bit determined in the first step serves as the minimum drill bit size, namely the first drill bit, the four corners of the groove body are determined through the drill bit, the R angle is reduced to the maximum extent, and the first drill bit serves as the first tool for machining, so that the outline of the right-angle square groove is closer to the perfect right-angle shape. According to the drilling method for the right-angle square groove, by optimizing drill bit selection, the machining sequence and technological parameters, the machined R angle is effectively reduced, the precision and consistency of the right-angle groove are improved, and the requirement of the industry for the high-precision right-angle groove is met.

The utility model provides a die finish-milling processing system, which comprises a workbench, a tool changing system, a controller, an oil gas pressure system, an illuminating system, a lathe bed, a cooling system and a blowdown system, can finish processing tasks in an extremely short time, greatly improves production efficiency, and is convenient to operate due to the fact that only one-time clamping is needed. According to the die machining device, machining can be highly centralized and accurately controlled, high-precision machining is achieved, the complex and fine requirements are met, the number of times of transportation of workers can be reduced, and multi-aspect rapid, efficient and accurate machining of the die can be achieved at a time.

The utility model relates to the technical field of paper box production, in particular to a paperboard die cutting device which comprises a feeding device and a lifting device, stand columns are arranged on the left side and the right side of the upper end face of the feeding device respectively, a transverse plate is arranged at the top ends of the stand columns, a through groove is formed in the transverse plate, and a threaded rod is rotationally arranged in the through groove. A threaded rod is arranged on the transverse plate, a threaded sleeve is arranged on an external thread of the threaded rod, a lifting device is arranged at the bottom of the threaded sleeve, a die cutting device is arranged below the lifting device, a driving device is arranged on the side of the transverse plate, and the driving device is connected with the threaded rod. And the limiting device is installed at the rear end of the stand column to solve the problems that paperboard die cutting waste is inconvenient to clean, it is troublesome to adjust the cutting width of a paperboard by adjusting the position of a die cutter through a fixing bolt, a conveying belt can deform during downward pressing machining, and position deviation can be possibly generated during paperboard die cutting.

The invention relates to the technical field of photovoltaic cells, and provides a laser processing device, a method for preparing a metal electrode and a photovoltaic cell. According to the laser processing system, remelting and solidification are carried out while selective metallization is carried out, the internal stress of the electrode is released while the adhesive force is increased, and the porosity can be effectively reduced; in addition, the technological process can be simplified, the problem that the secondary machining position is difficult to calibrate is solved, and the machining efficiency is improved. According to the method for preparing the metal electrode, the position of the copper electrode can be precisely machined, the problem of precision of current silk-screen printing is solved, damage to the amorphous silicon layer can be avoided, the prepared copper electrode has the large height-width ratio, and the light conversion efficiency can be effectively improved.

The present invention relates to an automatic control system for a milling and drilling compound machine tool based on double-ring buckle production, comprising a frame body, a processing component, a central control unit, a cooling device and an image acquisition component, wherein the frame body is used to support the frame body and the machine tool components, the processing component is arranged on the frame body, and is used to perform a milling and drilling compound process, the processing component comprises a cutter head for milling and drilling and a pressure sensor arranged at the upper end of the cutter head and capable of detecting the pressure borne by the cutter head, the image acquisition component is used to perform image acquisition of a workpiece to be processed and the processing component located on the processing component, the central control unit is connected to the processing component and the image acquisition component respectively, and can determine the current rotation speed and feed speed of the cutter head according to the pressure detected by the pressure sensor, and re-determine the re-determined feed speed through the detection result of an infrared imaging device. The present invention is more intelligent for the adjustment of milling and drilling processing.

The utility model discloses a draw -bench technical field's draw -knife support platform on draw -bench, including base, bracket and cooling pool, and the bracket is supported on the base through the lifting rod, and through the adjustment of lifting rod, can carry out height adjustment to bracket, also can adjust height respectively to the left and right ends of bracket, reaches the purpose of adjusting the angle of bracket and holds up, thereby stably erects draw -knife on the base, and can adjust draw -knife to the same horizontal position with the work piece of draw -bench, is convenient for cutting operation, still has increased the barrier net and the liquid baffle, still has increased the nozzle simultaneously, thereby can spray the coolant on draw -knife, effectively remove the metal dreg on its surface, reduce the probability of dreg residue, facilitate personnel's cleaning to draw -knife after each processing, still increased the cooling pool and the net frame and give the nozzle cooling liquid, make the whole device reach the coolant circulation utilization, and can collect the metal dreg of cutting through the net frame, convenient operation, convenient to use.

The utility model discloses a numerical control machine tool with a feeding device in the technical field of numerical control machine tools, which comprises a numerical control machine tool, a controller arranged on the front side wall of the numerical control machine tool, an operation room arranged in the numerical control machine tool, a placing seat arranged at the bottom in the operation room, a processing device arranged in the operation room, and a machine tool door slidably connected in the operation room. A feeding device is arranged at the bottom in the operation chamber and used for grabbing external workpieces to the containing base, the workpieces can be fed under the action of the feeding device, the workpieces can be accurately conveyed to the containing base to be machined, manual operation is not needed, the feeding effect is good, and the working efficiency is improved. The accuracy of the position of the workpiece placed on the placing seat is ensured, and the machining precision is improved.

The utility model discloses a kind of laminating machines with stack quantity detection, belong to laminating equipment technical field, its technical scheme main points include laminating machine main body, the front side of laminating machine main body is fixedly connected with conveying assembly, and the top of conveying assembly is provided with detection assembly, the conveying assembly includes U-shaped block, the both sides of U-shaped block top are all fixedly connected with L-shaped plate, and the inside of U-shaped block is fixedly connected with conveying belt, the opposite side of two L-shaped plates is all provided with clamping plate, solve the effect of existing laminating machine limitation is not good, in actual use process, lack of limiting structure, it is difficult to limit the movement of material, when assembly line operation, material is prone to positional deviation due to conveying belt vibration, incoming material deviation and other factors, it is difficult to accurately enter laminating machine's compression area, leading to alignment when laminating is not accurate, seriously affect the processing effect of laminating machine and the quality of product, reduce the practicality of the device.

The invention provides a composite cutter for machining an oil port of a diesel engine housing, and belongs to the technical field of machining. The boring cutter structurally comprises a cutter body, a cutter clamp, a jackscrew, a spot facing blade, a boring blade and a double-chamfer blade, the cutter clamp is connected to the cutter body through the jackscrew, the spot facing blade is connected to the cutter clamp, the boring blade and the double-chamfer blade are connected to the front portion of the cutter body, and the boring blade, the double-chamfer blade and the spot facing blade are sequentially arranged from front to back. According to the invention, one compound cutter is used for replacing four original cutters, so that the rapid and accurate processing of the oil port is realized, and the production efficiency and the processing quality are improved. Practical application shows that the size of the machined diesel engine housing oil port meets the drawing requirement, and the machining quality is good. The method not only can be used for machining the oil port of the diesel engine housing, but also is expected to be popularized on other similar products. As an efficient and high-precision oil port machining tool, the oil port machining tool can achieve rapid and precise machining of an oil port, and the production efficiency and the machining quality are improved.

The utility model provides a device for edge searching and processing of a building partition board by a machine head infrared sensor, which comprises a device body and is characterized in that the device body is provided with a machine base, and the machine base comprises cross beam seats on two sides and a connecting seat connected with the same ends of the two cross beam seats; the cross beam bases on the two sides are fixedly connected with the connecting bases so that the machine base can be of a U-shaped structure, and a machining area for containing partition boards is formed on the inner side of the machine base. A first sliding rail is arranged at the top of the cross beam seat, a cross beam capable of horizontally moving back and forth along the first sliding rail is connected to the upper portion of the machine base, a second sliding rail is arranged on the cross beam, a machine head assembly capable of horizontally moving back and forth along the second sliding rail is connected to the cross beam, and the machine head assembly is provided with a machine head seat capable of vertically moving. The machine head base is provided with a machine head used for machining a partition wall board and an infrared sensor used for detecting the position of the partition wall board. And plates of different sizes can be precisely machined.

The invention relates to a high-precision FFC (flexible flat cable) laminating device and laminating process, the high-precision FFC laminating device comprises a lower base, a lower layer assembly, a lead plate layer, a dust hood, an upper base, an upper layer assembly, a reinforcing white strip frame, a first hot pressing roller assembly, a reinforcing plate frame, a film covering assembly and a shearing assembly, the lower layer assembly is mounted on the upper end surface of the lower base, and the lead plate layer is arranged above the lower layer assembly; the PET insulating layers are attached to the upper end and the lower end of the copper wire, holes are selectively formed in the upper PET insulating layer and the lower PET insulating layer, and the reinforcing plates are hot-pressed; the holes are punched on the lower PET insulating layer, so that the subsequent copper wire gold plating at the opening is facilitated; after the flat-angle copper wire is attached to the upper PET insulating layer and the lower PET insulating layer, the flat-angle copper wire and the upper PET insulating layer and the lower PET insulating layer are subjected to thermal compression bonding through a compression roller, a reinforcing plate is subjected to thermal compression bonding at the joint of the FFC after thermal compression bonding to increase the strength of the inserting position of the FFC, the surface is covered with an isolating film, and the isolating film can adsorb excessive glue at the hole opening position. And then stripping and winding are carried out according to the size requirement of the flat cable after the film is rewound and coated.

The utility model discloses a kind of middle disc rotation driving mechanism of hardware machining machine, it includes gear ring, fixed on middle disc;Driving device, including fixed on upper support frame servo motor, linkage in the shaft rod assembly of servo motor, and gear installed on shaft rod assembly, gear meshing installation is on gear ring;Middle disc has relative upper disc stop state to be processed, in the state to be processed, each chuck seat is respectively corresponding set below each processing tool bit, the utility model uses the cooperation of servo motor+shaft+gear ring, completes the rotation driving of middle disc, drive is very stable, driving precision is high, and the stop and start of middle disc can be accurately controlled by servo motor, the high-speed operation of equipment can be satisfied, structure is stable, service life is long, and practicality is strong.

The utility model discloses a clamping device for packing box processing, and relates to the technical field of clamping devices, the clamping device for packing box processing comprises a collecting box, the surface of the collecting box is fixedly connected with a filter screen, the surface of the collecting box is fixedly connected with a portal frame, and the surface of the portal frame is fixedly provided with a motor; a guide groove is formed in the surface of the portal frame, an output shaft of the motor is fixedly connected with a two-way threaded rod, the two-way threaded rod is rotationally connected with the inner wall of the guide groove, the surface of the two-way threaded rod is in threaded connection with a guide block, the guide block is slidably connected with the inner wall of the guide groove, and the surface of the guide block is fixedly connected with a guide block. The surface of the fixing plate is fixedly connected with a clamping plate, cleaning cotton slides downwards to clean the surface of the packaging box, then when the packaging box is used subsequently, the surface of the packaging box is cleaner and tidier, and then foreign matter and dust are prevented from being attached to the surface of the packaging box.

The invention discloses a wafer grinding and cleaning device and a wafer processing method. The wafer grinding and cleaning device comprises a processing shell, a grinding disc assembly, a cleaning assembly, a first rotating assembly and a second rotating assembly. A processing cavity is formed in the processing shell, and a wafer processing position is arranged in the processing cavity; the rotating end of the first rotating assembly is connected with the grinding disc assembly and is arranged below the wafer processing station; the rotating end of the second rotating assembly is connected with the grinding disc assembly, the cleaning assembly and the first rotating assembly, the grinding disc assembly and the cleaning assembly are arranged on the two sides of the wafer machining station, and the grinding disc assembly and the cleaning assembly can move around the wafer machining station in a surrounding mode in cooperation with the second rotating assembly. The precise processing and instant cleaning of the wafer edge are realized; wherein the millstone assembly is driven by the first rotating assembly, and the millstone assembly is used for machining the edge of the wafer. Through the arrangement, interference caused by bit precision and heat influence can be reduced, so that the edge processing quality of the wafer is improved.

A machining and feeding device for a variable-cross-section longitudinal beam with a straight side on one side comprises a rack assembly and a feeding assembly. The machine frame assembly comprises a machine frame, and two rails are laid on the machine frame side by side. Compared with the prior art, the machining and feeding device for the variable cross-section longitudinal beam with the straight side on the single side has the advantages that the feeding clamp can properly adjust the transverse position of the longitudinal beam according to the change of the width of the variable cross section in the longitudinal feeding process; the position of the feeding clamp can be adjusted up and down and left and right according to the position of the longitudinal beam, the variable cross-section longitudinal beam with the single side being a straight edge can be accurately conveyed to a designated position, after feeding is in place, the punching positioning device only needs to fix the position of the longitudinal beam, and an existing punching machine can accurately conduct punching machining on a web plate or a wing plate of the longitudinal beam.

The application discloses a three-axis numerical control machining center for metal machining, which comprises a frame body, a workbench and a work main body arranged in the frame body, a lifting plate arranged in the frame body, a protective cover fixedly connected to the frame body, a central shaft connected to the protective cover, and a driven cylinder fixedly connected to the side surface of the central shaft. The three-axis numerical control machining center is characterized in that the workbench, the work main body, the lifting plate, the protective cover, the central shaft, the driven cylinder, connecting ropes, a large gear, a side shaft, a small gear and fan blades are cooperated with each other. In the process of use, the force generated in the lifting process of the lifting plate is utilized to rotate the fan blades, the debris generated in the machining is blown away by the fan blades, the debris is prevented from being accumulated, the debris is also prevented from being accumulated on other components, the device can be stably moved, the added structure is low in cost, the cost is not increased too much, the work burden of workers is reduced, and the device is convenient to use.

This utility model discloses a self-centering fixture for a CNC grinding machine, relating to the field of CNC grinding machine technology. The utility model includes a base plate, on which a supporting disc is fixedly connected. The top surface of the supporting disc has several grooves, and sliders are slidably connected to the inner walls of each groove. A fixture is fixedly connected to the top surface of each slider. An air pump is fixedly connected to the top surface of the base plate, and a threaded rod is fixedly connected to the top surface of the air pump. A hinge block is slidably connected to the outer wall of the threaded rod, and an internal thread block is threaded onto the outer wall of the threaded rod. The internal thread block is rotatably connected to the bottom surface of the hinge block. Several hinge rods are hinged to the outer wall of the hinge block, and one end of each hinge rod away from the hinge block is hinged to one of the sliders. This utility model, by providing a positioning mechanism, enables multiple fixtures to clamp and position a workpiece placed on the top surface of the supporting disc from multiple directions.