82results about "Filing/rasping devices" patented technology

The invention relates to the technical field of plate processing, and discloses a furniture plate processing filing device which comprises a bottom plate fixedly mounted at the top of a workbench, a rear plate is integrally formed at the top of the bottom plate, a shaft seat is fixedly mounted at the top of the bottom plate, and a rotatable rotating shaft is mounted on the outer wall of the shaft seat; and a driving connecting rod is fixedly mounted on the outer wall of the rotating shaft. The file can mechanically file a plate through reciprocating pressing and releasing of the fulcrum block on the file, and the plate is filed only when the file moves forward, so that the frequency of manual operation is reduced, the risk that an operator is accidentally injured is reduced, the working safety is improved, and the working efficiency is improved. And the file only exerts force when moving close to the plate and loosens when moving away from the plate, so that the process is repeated, only the cutting edge of the file is used for filing the plate in the filing process, the abrasion of the cutting edge of the file is reduced, and the service life of the file is prolonged.

The invention discloses positioning equipment for angle steel welding, and relates to the technical field of welding positioning. The angle steel welding device comprises a base and angle steel bodies, a supporting column is fixedly connected to the top of the base, and a top plate is fixedly connected to the front end of the supporting column. A first electric push rod is controlled to enable a guide wheel to move upwards to be matched with a moving wheel to clamp an angle steel body in the vertical direction, a second electric push rod drives an abutting wheel to be matched with an auxiliary wheel to clamp the angle steel body in the front-back direction, then a motor is started to drive a rotating shaft to rotate, and the rotating shaft rotates to drive the moving wheel to rotate; and in this way, the two sets of angle steel bodies can be in butt joint, and follow-up welding can be conveniently conducted on the two sets of angle steel bodies.

The invention discloses racket burr detection processing equipment and method based on machine vision, and belongs to the technical field of intelligent production control. The equipment comprises a conveying system, a clamping mechanism, an image acquisition module, a control system and a burr removing device. The conveying system conveys the rackets to a station and the rackets are fixed by the clamping mechanism; the image acquisition module acquires a racket image, and the control system identifies a burr position and plans a path according to the image; and the multi-degree-of-freedom mechanical arm carries a rotary cutting tool, and burrs are removed according to the planned path. The problems that in the prior art, manual deburring is unstable in quality and low in efficiency, and products are prone to being damaged are solved. Through the combination of machine vision and the force-controlled mechanical arm, full-automatic closed-loop operation from recognition, positioning to processing is achieved, the detection precision and the product quality are effectively improved, and the device is suitable for automatic production of complex curved-surface products such as badminton rackets.

The invention relates to the technical field of machining, in particular to outer edge finish machining equipment for carrier roller bearing seat production, which comprises a base, a reciprocating type driving module, a file mounting module for mounting a file body and a workpiece clamp module, and the base is provided with a first mounting plate and a second mounting plate which are arranged in parallel; the first mounting plate is positioned on the right side of the second mounting plate; the reciprocating type driving module is arranged on the first mounting plate, the output end of the lower side of the reciprocating type driving module is connected with the file mounting module through a connecting block and a connecting rod assembly, and the reciprocating type driving module can drive the file mounting module to reciprocate up and down; through the arrangement of the adjusting module, the file body is separated from the carrier roller bearing seat during return stroke, so that one-way filing of the end face of the outer edge of the carrier roller bearing seat is achieved in one movement period, namely, the forward filing operation of the end face of the outer edge of the carrier roller bearing seat is achieved while the filing efficiency is guaranteed, and the fine filing effect is guaranteed.

The present invention discloses a device for removing the edge of a switch socket, which relates to the technical field of filing. The device comprises a workbench, a lifting frame slidably connected to the workbench, a cylinder symmetrically distributed along the workbench fixedly connected to the workbench, a connecting frame fixedly connected between the telescopic ends of the symmetrically distributed cylinders, a vibration frame slidably connected to the connecting frame, a motor symmetrically distributed along the connecting frame fixedly connected to the connecting frame, an eccentric wheel fixedly connected to the output shaft of the motor, the eccentric wheel having one side higher than the other side, the eccentric wheel in contact with the vibration frame, and at least three filing tools fixedly connected to the vibration frame. The filing tools are provided with rolling teeth for filing the edge of the switch socket jack. The present invention files the edge of the switch socket up and down in a small amplitude during the process of progressively moving downward by the rolling teeth, thereby realizing automated edge removal and improving the efficiency of edge removal. In addition, the filing force can be controlled to avoid thermal deformation of the jack caused by excessive filing force.

The utility model discloses a bench worker file which comprises a shell, a workpiece is installed in an inner cavity of the shell in a sliding mode, the workpiece comprises a file body and a cutter body, one end of the file body and one end of the cutter body are integrally formed, the cutter body is connected with a rotary knob through an adjusting assembly, and the rotary knob can be locked through a locking assembly. The positions of the file body and the cutter body can be adjusted by rotating the rotary knob and matching with the adjusting assembly, the file body or the cutter body can slide out of the shell and then is locked through the locking assembly, the file body or the cutter body can be selected to be used according to needs, and compared with the prior art, the multifunctional file is richer in function and more convenient to use. The practicability is higher.

An auxiliary sample grinding device of a crucible polishing machine belongs to the technical field of polishing machine equipment and is used for grinding a sample. According to the technical scheme, a stand column is perpendicularly fixed to a base, a file fixing frame is composed of two parallel transverse rods, a gap is formed between the two parallel transverse rods, the width of the gap is matched with the thickness of a file, the file is fixed between the two transverse rods, and the middles of the two transverse rods of the file fixing frame are connected with the upper end of the stand column through rotating bearings. The torsion spring is sleeved on the stand column, the lower end of the torsion spring is fixedly connected with the base, and the upper end of the torsion spring is connected with the cross rod of the file fixing frame. The device is simple in structure and convenient to use, torsion of the torsion spring to the file can be adjusted by rotating the file fixing frame, the purpose of adjusting friction force between the file and a sample is achieved, the file can evenly polish the surface of the sample, scratches on the surface of the sample are eliminated, and the heating value in the friction process is far smaller than that of abrasive paper. And the grinding quality of the sample is ensured.

The utility model discloses a deburring device for cooling fins, and belongs to the field of cooling fin machining. Comprising a working table, a long-strip-shaped working track arranged on the upper surface of the working table, a cutter groove which is formed in the working track, formed in the length direction axis of the working track and penetrates through the working table, a deburring cutter arranged in the cutter groove and a driving mechanism arranged on the lower surface of the working table and connected with the deburring cutter. The deburring cutter extends out of the upper surface of the workbench, positioning plates are symmetrically arranged at the two ends of the working track in the length direction, the symmetrically-arranged positioning plates and the section of the working track are in a U shape, a pressing wheel is arranged above the axis of the working track in the length direction, and cooling fins to be deburred are continuously pushed in along the working track. The deburring position of the heat dissipation fins is kept stable through the pressing wheel, deburring operation is accurately conducted on the heat dissipation fins at a time through the deburring knife, human errors can be eradicated, and the operation efficiency is improved.

The invention discloses excessive flash removing equipment for switch jacks, and relates to the technical field of filing, the excessive flash removing equipment comprises a workbench, the workbench is slidably connected with a lifting frame, the workbench is fixedly connected with air cylinders symmetrically distributed along the workbench, a connecting frame is fixedly connected between the telescopic ends of the symmetrically distributed air cylinders, and the connecting frame is slidably connected with a vibration frame; the connecting frame is fixedly connected with motors symmetrically distributed along the connecting frame, an output shaft of each motor is fixedly connected with an eccentric wheel, one side of each eccentric wheel is high, the other side of each eccentric wheel is low, the eccentric wheels make contact with the vibrating frame, the vibrating frame is fixedly connected with at least three filing tools, and the filing tools are provided with rubbing teeth used for filing excessive flashes in jacks of the switch socket. In the gradual downward movement process of the rubbing teeth, the excessive burrs of the switch socket are subjected to up-and-down broaching in a small range, automatic edge removing is achieved, the edge removing efficiency is improved, the broaching force can be controlled, and jack thermal deformation caused by too large broaching force is avoided.

The invention discloses chamfering equipment for a motor output shaft, and belongs to the technical field of motor shaft machining.The chamfering equipment for the motor output shaft comprises an equipment workbench, and a translation driving mechanism is installed in a groove in one side of the top of the equipment workbench; the top of the equipment workbench is fixedly connected with a limiting guide rail assembly corresponding to the translation driving mechanism, the two sides of the top of the translation driving mechanism are fixedly connected with a rotating driving mechanism and a rotating supporting assembly correspondingly, and one side of the rotating driving mechanism is fixedly connected with a shaft rod clamping mechanism; the rear end of the other side of the top of the equipment workbench is fixedly connected with a liquid conveying mechanism. By designing the chamfering adjusting mechanism, right-angle chamfering and round-angle chamfering can be selected according to different requirements, meanwhile, chamfering modes of different specifications can be achieved, the use range of the whole equipment is widened, chamfering work of multiple modes can be achieved, frequent replacement of a file is avoided, and the machining efficiency is improved.

The invention discloses a bar filing device which comprises a bottom plate, a bar clamping and rotating unit is connected to the bottom plate and connected with a transmission unit through a belt, the bar filing device further comprises a rotating and reciprocating unit, the rotating and reciprocating unit is connected with the transmission unit, and a file rotating clamp unit is arranged on the rotating and reciprocating unit. The bar clamping and rotating unit is connected to the bottom plate, the transmission unit is connected to the bottom plate, and the rotating and reciprocating unit is connected to the bottom plate. The invention further discloses a rasping method of the device. The rasping method specifically comprises the steps that S1, bar loading is conducted; S2, the file is in place; s3, performing rasping operation; s4, the file is reset; s5, bar unloading is conducted, specifically, the hoop is loosened, and the bar is taken out; and S6, circulating operation. The device solves the problem that existing manual grinding is low in efficiency.

The invention discloses a flexible flywheel deburring machine, which relates to the technical field of mechanical processing, including a workbench, a file insertion mechanism, a file reciprocating mechanism and a limiting mechanism. The invention limits and presses the flexible flywheel through a protective cover and a positioning pressure column, and then enables the file to perform multiple back-and-forth grinding and deburring on the flexible flywheel signal hole through the file insertion mechanism and the file reciprocating mechanism. At the same time, the file limiting disk of the limiting mechanism limits the file to ensure that the file will not separate from the workpiece when moving. The whole process has a high degree of automation and high efficiency, and the quality of the flexible flywheel is guaranteed.

The present application provides a kind of knife processing with filing device, it is related to filing device technical field, comprising: support fixed component;The support stand is fixedly installed on the top of support base, processing component can control and position the filing pressure, balance and filing depth when filing component bottom file is filed, so as to ensure the accuracy of filing processing, the yield is improved by 30%, and driving component can drive filing component to realize automatic filing operation to tool blank by automatic reciprocating motion, simplify the operation process, greatly reduce the labor intensity of worker, work efficiency is improved by 40%, solve the tool blank filing operation by worker hand file to tool blank filing, the labor intensity is big, work efficiency is low, and artificial filing often very difficult to achieve the required filing accuracy, quality is poor, the yield is not high.

The utility model discloses a floating file machine with a protective structure, and relates to the technical field of file machines, the floating file machine comprises a machine body and a protective mechanism, the outer side of the machine body is fixedly sleeved with a mounting plate, one end of the machine body is connected with an air pipe joint, the other end of the machine body is connected with a connecting cylinder, one side of the machine body is provided with an adjusting valve, and the other side of the machine body is provided with an adjusting valve. The protection mechanism is arranged on the outer side of the connecting cylinder. According to the floating file machine with the protective structure, a protective cover is installed on the outer side of a file tool, then chippings can be blocked through the protective cover, due to the fact that the file tool grinds and removes burrs towards one side, a workbench extrudes the protective cover, a telescopic rod slides in a built-in groove of a connecting rod and extrudes a reset spring, and the chippings are prevented from falling off. And then the reset spring rebounds to support the telescopic rod, so that the protective cover can better cover the outer side of the workpiece, the file is protected, chippings are prevented from flying out, and the safety of the floating file machine is improved.

The utility model relates to the technical field of flat files, in particular to a flat file handle capable of being disassembled flexibly, which comprises a holding rod, a threaded connecting rod, a connecting rod nut, a movable cover plate, a fixed cover plate and a locking bolt, the threaded connecting rod is fixedly arranged at the right end of the holding rod in the vertical direction, and the threaded connecting rod is in threaded connection with the connecting rod nut. A movable cover plate penetrates through the threaded connecting rod, a sliding groove is transversely formed in the upper surface of the movable cover plate, a fixed cover plate is fixedly arranged at the bottom of the threaded connecting rod, and locking bolts are in threaded connection with the two ends of the side face of the movable cover plate; according to the utility model, flat files with different sizes can be conveniently fixed, and after the flat file handle is fastened, an employee can hold the handle by hand to finish the work of large-area plane fine processing, surface treatment and the like and the work of repairing and filing special angle positions in the fields of metal processing, wood processing, plastic processing and the like.

The invention relates to the technical field of nodular cast iron casting cutting, in particular to an automatic nodular cast iron cutting device which comprises a bottom supporting plate, the top of the bottom supporting plate is connected with a positioning platform through a plurality of vertical columns, an air cylinder is installed at the top of the bottom supporting plate, a through groove is formed in the middle of the positioning platform, and a filing power part is arranged at the pushing end of the air cylinder. A coordination part used for being matched with the filing power part is arranged at the top fixing end, and a positioning part is installed at the top of the positioning platform and located below the coordination part. A plurality of nodular cast iron fasteners are synchronously positioned through the positioning part, and the fastening structure can be matched with the pressing structure to fasten and stabilize the nodular cast iron fasteners, so that the nodular cast iron fasteners are stably connected with the fastening structure and the vertical moving plate; therefore, the nodular cast iron fastener can be stable in the locking state of the locking structure, meanwhile, the fastening structure can enable the movable part in the nodular cast iron fastener to be stable, and then the filing precision and effect are ensured.

The utility model provides a screw rotor coping tool, which comprises a mounting table and a rotor rotatably arranged above the mounting table, the mounting table is provided with: a support assembly arranged at two ends of the rotor, the top of which horizontally supports the rotor; and the pressing assembly is arranged at one end of the rotor and comprises a conveying belt and a driving unit for driving the conveying belt to circularly move, and the conveying belt downwards presses the rotor and drives the rotor to rotate. The supporting assembly is arranged to support the lower side of the rotor shaft, the pressing assembly is arranged to downwards press the upper side of the rotor shaft to enable the rotor shaft to be tightly attached to the supporting assembly, the function of rapidly and horizontally positioning the rotor is achieved, the pressing assembly is provided with the conveying belt to drive the rotor to rotate, a worker can grind the sharp edge of the rotor through a file, and the problems of complex grinding operation, low efficiency and the like are solved.

The invention provides a filing device for cutter machining, and relates to the technical field of filing devices. The vertical supporting frame is fixedly mounted at the top of the supporting base, and the machining assembly can control and position the filing pressure, balance and filing depth when a file at the bottom of the filing assembly is used for filing, so that the accuracy of filing machining is guaranteed, the yield is increased by 30%, and the machining efficiency is improved. The driving assembly can drive the filing assembly to automatically reciprocate to achieve automatic filing operation on the cutter blank, the operation process is simplified, the labor intensity of workers is greatly reduced, the working efficiency is improved by 40%, and the problems that the labor intensity is large, the working efficiency is low and the working efficiency is high when the workers hold files to file the cutter blank in the cutter blank filing operation are solved. And the required filing precision is difficult to achieve by manual filing, the quality is relatively poor, and the yield is not high.

The utility model discloses a file handle with an intelligent level detection alarm function and a file, and relates to the field of file structures, the handle comprises a handle body with a connecting part, and the connecting part is used for being connected with a tool body; the cutter body is provided with a mounting cavity, a horizontal detector and a controller are arranged in the mounting cavity, the horizontal detector is connected with the controller, the output end of the controller is connected with an alarm, and the alarm is fixed to the position, close to the connecting part, of the surface of the cutter handle body; the file has a shank and a body. On the premise that a user can be reminded to adjust the levelness of the file, the file has the advantages that the file is simple in structure, is not limited by a processing site, is convenient to use and does not affect observation of an operator.

The invention relates to the technical field of automobile battery cooler metal shell accurate grinding, and discloses a high-frequency reciprocating grinding automobile battery cooler metal shell accurate grinding device which comprises a material taking table, a material placing table is arranged at one end of the material taking table, a filing and grinding mechanism is arranged above the material placing table, and the filing and grinding mechanism comprises a filing and grinding knife and a knife handle. After a welding mark is ground, elastic force blocking terminals located on the two sides of a cutter handle prevent the cutter handle from continuing to descend, then the downward elastic force of a pressing spring to a filing cutter is counteracted, the filing cutter is in a stress balance state on the surface of the metal shell of the automobile battery cooler, and therefore the filing cutter does not fall off even in a reciprocating motion state. The surface of the metal shell of the automobile battery cooler is not abraded when the high-frequency reciprocating filing knife is used for grinding the welding marks of the metal shell of the automobile battery cooler, so that the situation that the metal shell of the automobile battery cooler is excessively ground by the filing knife in a high-frequency state is avoided, and the purpose of accurate grinding is achieved.

The invention discloses a high-strength stainless steel safety rigging filing device, and relates to the technical field of numerical control filing, the high-strength stainless steel safety rigging filing device comprises a filing shell, and further comprises a filing part, a progressive propelling part and a precision improving part, lifting type mounting assemblies are arranged on the two sides of the inner wall of the filing shell, and each lifting type mounting assembly comprises a fixing part and an electric control part; driving devices are arranged on the two sides of the filing shell correspondingly, a filing wheel is arranged in the filing shell, a one-way exhaust port is fixedly connected to the inner wall of the filing shell, the filing component comprises a conversion box, the input end of the conversion box is fixedly connected with a motor, the conversion box is fixedly connected to the top face of the filing shell, the output end of the conversion box is fixedly connected with a displacement shaft, and the displacement shaft is fixedly connected with the motor. The transfer box is driven by a motor to enable the displacement shaft to conduct rectangular-ambulatory-plane track displacement, the lower end of the displacement shaft is fixedly connected with a driving plate, the inner wall of the driving plate is slidably connected with a main shaft through a bearing, and the effect of improving the filing precision of the inner side face of the lock is achieved.

The utility model discloses an air mill with an extension rod. The air mill comprises an air mill body, the extension rod connected with the air outlet end of the air mill body, and a ball file assembly arranged at the end part of the extension rod, the ball head file assembly comprises a ball head file, a connecting rod connected with the ball head file and a locking threaded sleeve arranged outside the connecting rod in a sleeving mode. One end of the extension rod is provided with a tensioning sleeve, the outer side of the tensioning sleeve is provided with an external thread and a conical surface, and the conical surface is provided with a plurality of open slots; and the inner side of the locking thread sleeve is provided with an internal thread and a conical extrusion surface. When the air mill structure is used, the ball head file can extend into the part, where flashes and burrs need to be removed, of a workpiece, after the flashes and the burrs are removed through the ball head file, the handle is pressed, and high-pressure airflow passing through the air mill body is blown out of the air blowing hole of the ball head file, so that the fallen flashes and the burrs are removed; the ball head file with the structure can extend into a narrow range on a workpiece through the extension rod to clean flashes and burrs, and is convenient and flexible to operate.

A pneumatically operated drive machine (1) for an oscillating saw or file as a tool, comprising a tool housing (3) for a motor housing (17) mounted longitudinally displaceably in the tool housing (3), with a longitudinally oscillating piston (21) inserted therein, having a piston rod (23) attached thereto which can be connected to the tool, and a valve (25) inserted in the tool housing (3) for alternately supplying the two end faces of the piston in the motor housing (17) with supply air, wherein the supply air, after an actuating valve (35) connected to a compressed air source, passes through a cylinder (46) penetrating the rear end of the motor housing (17) in a sealed manner and traversing the rear displacement section (15") for the motor housing (17) in the tool housing (3), with a blind-hole supply air bore (45), directly into the interior of the motor housing. (17) is initiated,wherein both end faces of the motor housing (17) have substantially the same cross-sectional areas and the two displacement sections (15', 15") bounding the end faces of the motor housing (17) are connected to each other, such that the pressure of the exhaust air on both end faces of the motor housing (17) is substantially identical, so that regardless of the magnitude of the supply and exhaust air pressure, no displacement of the motor housing (17) occurs in the bore (13) of the tool housing (3), and the motor housing (17) is held in a central position by two springs (22, 24) when the engine is not running and there is no air supply.

The invention discloses a high-strength stainless steel safety rigging filing device, and relates to the technical field of numerical control filing, the high-strength stainless steel safety rigging filing device comprises a filing shell, and further comprises a filing part, a progressive propelling part and a precision improving part, lifting type mounting assemblies are arranged on the two sides of the inner wall of the filing shell, and each lifting type mounting assembly comprises a fixing part and an electric control part; driving devices are arranged on the two sides of the filing shell correspondingly, a filing wheel is arranged in the filing shell, a one-way exhaust port is fixedly connected to the inner wall of the filing shell, the filing component comprises a conversion box, the input end of the conversion box is fixedly connected with a motor, the conversion box is fixedly connected to the top face of the filing shell, the output end of the conversion box is fixedly connected with a displacement shaft, and the displacement shaft is fixedly connected with the motor. The transfer box is driven by a motor to enable the displacement shaft to conduct rectangular-ambulatory-plane track displacement, the lower end of the displacement shaft is fixedly connected with a driving plate, the inner wall of the driving plate is slidably connected with a main shaft through a bearing, and the effect of improving the filing precision of the inner side face of the lock is achieved.

The present invention proposes an automatic processing device for a hydraulic oil pipe joint, which relates to the technical field of bar material processing, and comprises a main body block, two clamping rods are slidably installed on one side of the main body block, the spacing between the two clamping rods can be adjusted, and the sides of the two clamping rods close to each other are fixedly connected with extrusion blocks, and a soft file is rotatably connected between the two extrusion blocks; when the two clamping rods are close to each other. The present invention proposes an automatic processing device for a hydraulic oil pipe joint, which can be adjusted according to the diameter of the oil pipe joint through the main body block, clamping rod, extrusion block, soft file, positioning mechanism, limit adjustment structure and adjustment structure, and after the waste edge and burr on the surface of the oil pipe joint are ground, the soft file can be restricted from continuing to grind the oil pipe joint, thereby reducing the oil pipe joint being excessively ground by the soft file, ensuring the quality of the oil pipe joint, and when adjusting, the clamping rods can be adjusted to be close to each other and the limit adjustment structure can be adjusted at the same time, reducing the adjustment time and improving work efficiency.

The invention discloses a filing machining device for furniture part production, which comprises a base, a circulating box arranged at the top of the base, a portal frame, a sliding chute, a gear ring and a filing mechanism, the sliding chute and the gear ring are arranged on the side wall of the portal frame, and the filing mechanism is used for filing parts. The device comprises a cooling mechanism used for cooling water, a clamping mechanism used for clamping and fixing parts, a storage mechanism used for collecting and drying scrap iron, and a circulating mechanism used for circulating cooling water. The invention relates to the technical field of filing machining. When the mechanical part and the filing cutter are cooled by the atomizing spray head, cooling water sprayed by the atomizing spray head can be filtered and recycled through cooperation of a circulating plate, a through hole, a first electric push rod, a water filtering brush, a drying plate, a storage groove and a water pump, so that the resource consumption of the cooling water of equipment is reduced; and meanwhile, scrap iron generated during mechanical part machining can be collected and dried, and rust caused by water contained in the scrap iron is avoided.

The utility model provides a milling cutter point shaping device which comprises a supporting bottom plate, a servo motor, a supporting frame, a tightening opening, a pre-machining milling cutter and a shaping structure, the servo motor is fixedly installed in the middle of the surface of the supporting bottom plate, the tightening opening is fixedly installed on an output shaft of the servo motor, and the pre-machining milling cutter is fixedly installed in the tightening opening; the shaping structures are fixedly installed at the two ends of the surface of the supporting bottom plate. The arrangement of the supporting frame and the shaping structure can be matched with the angles of a plurality of cutting edges of the milling cutter, and generated chippings can be collected.

The utility model relates to a limiting file machine which comprises a fixed seat and a support arranged at one end of the fixed seat, a file machine body is arranged on the fixed seat, the output end of the file machine body penetrates through the support and is connected with a chuck used for clamping a file, and guide rods movably connected with the chuck are arranged on the support and located on the two sides of the output end of the file machine body. The guide rod movably matched with the chuck is arranged on the support, and under the action of the guide rod, the chuck can only drive the file to axially move along the guide rod, so that radial swinging of the file is avoided, and the grinding quality is effectively improved.

The auxiliary supporting mechanism comprises a base and a tire body, the top of the base is fixedly connected with an installation cylinder, the top of the installation cylinder is fixedly connected with an installation plate, an installation disc is fixedly connected between the circumferential inner walls of the installation cylinder, and the top of the installation disc is fixedly connected with a motor. And the output end of the motor is in key connection with a second bevel gear, two supporting blocks are fixedly connected to the bottom of the mounting plate, and a first two-way threaded rod is rotationally inserted between the two supporting blocks. The second two-way threaded rod is screwed to drive the U-shaped supporting frame and the clamping plate to move to be close to the tire body, then the U-shaped supporting frame is wrenched downwards to enable the clamping plate to be inserted into the tire body, then the second two-way threaded rod is screwed reversely to drive the clamping plate to move outwards, and then the tire body is opened towards the two sides. And therefore, the tire body is supported and fixed, and the tire body is convenient to overhaul.

An electric file comprises a file body, wherein the file body is provided with a driving assembly and a transmission assembly, the transmission assembly is provided with a plurality of first file blades and a plurality of second file blades, the first file blades and the second file blades are arranged alternately, the first file blades and the second file blades move in opposite directions under the drive of the transmission assembly, the file body is covered with a cover plate on the first file blade and the second file blade, the cover plate is provided with a first pressing block abutting against the side wall of the first file blade or the second file blade, and the file body is provided with a second pressing block abutting against the side wall of the first file blade or the second file blade at a position opposite to the first pressing block. The present invention has the advantages of simple structure, reasonable design, convenient use, safety and reliability, high filing efficiency, etc.