48results about How to "Self-centering" patented technology

The invention discloses a multi-cylinder hydraulic antifriction bearing taper crusher, which comprises a lower machine frame, an eccentric sleeve mechanism, a transmission set, a movable tapper, an upper machine frame set and an iron passing and cavity clearing device. The upper machine frame set is arranged above the lower machine frame, the transmission set and the eccentric sleeve mechanism are both installed on the lower machine frame, the transmission set is connected with the eccentric sleeve mechanism where the movable tapper is arranged, the iron passing and cavity clearing device is directly installed on the lower machine frame and the upper machine frame set, the eccentric sleeve mechanism adopts an antifriction bearing type eccentric sleeve mechanism, the iron passing and cavity clearing device adopts a relief valve type iron passing and cavity clearing device, and a movable tapper body rotating-proof device is connected to the bottom of the movable tapper. The multi-cylinder hydraulic antifriction bearing taper crusher improves crushing efficiency and output of the taper crusher, and prolongs service life of a machine, reduces using cost of equipment. The iron passing and cavity clearing device can not only bear higher working pressure of a system, but also be safe and reliable, convenient to assemble and capable of controlling a tapper body to rotate according to certain direction, thereby improving production efficiency and saving energy.

The invention provides an SMA-wire-actuated (shape memory alloy wire-actuated) ultrahigh-load unlocking device. A split nut and a large bolt are used herein as connectors. A volute spring is used as afastener, and an SMA wire is used as a separation actuating element. The large bolt is connected with a separation structure. The split nut is enclosed by the volute spring to lock the large bolt. The inner end of the volute spring is fixed to the split nut, and the outer end of the volute spring is connected to a frame. The frame in locked state is limited by a restraint system composed of a presser and a clamp pin. To achieve separation, the SMA wire is electrified and heated to experience phase change and contraction, the presser is driven to move, the clamp pin is freed from limiting, theframe with no restraint rotates with the volute spring under resetting power of the volute spring, after the volute spring loosens, and the split nut expands under the action of its sheet structure to release the large bolt. The SMA-wire-actuated ultrahigh-load unlocking device has high drive ratio, high release load, high reliability, good vibration resistance, and high impact performance.

The invention relates to the technical field of mechanical clamps, in particular to a circular-handle cutter rapid clamp. The circular-handle cutter rapid clamp comprises a clamp body, a plurality ofclamping heads capable of synchronously moving are arranged on the clamp body, a clamping hole for containing a round handle cutter is formed in the middle of the clamp body, a plurality of sliding grooves in the radial direction are formed in the periphery of the clamping hole, the sliding grooves are uniformly distributed in the circumferential direction, the front ends of the sliding grooves are in communication with the clamping hole, air pressure cavities are formed in the rear sides of the sliding grooves, the axes of the air pressure cavities and the axes of the sliding grooves are in the same radial straight line, one ends of the clamping heads are correspondingly arranged in the sliding grooves and is in sliding fit with the sliding grooves, springs are arranged at the rear partsof the clamping heads in the sliding grooves, ejector rods are arranged in the air pressure cavities and are in sliding fit with the air pressure cavities, the front ends of the ejector rods extend tothe rear ends of the springs and are connected with the rear end of the springs, and an annular air pressure chamber communicating with the air pressure cavities is arranged on the clamp body corresponding to the rear parts of the air pressure cavities. The circular-handle cutter rapid clamp is high in clamping efficiency and can be applied to circular-handle cutters with different outer diameters.

The invention relates to the field of ultrahigh pressure physical experiment equipment, in particular to an improved device for pressing diamond and aligning the diamond with base. The pressing and aligning device comprises a foundation bed used for placing the base and a pressing mechanism for applying pressure on the waist of the diamond, an observation hole with the central axis parallel to that of a through hole in the base is formed in the foundation bed, the central axis of the observation hole coincides with the pressure applying direction of the pressing mechanism, the foundation bed is connected with a body supporting structure used for supporting the pressing mechanism, and the body supporting structure is provided with an adjusting mechanism for adjusting the relative position of the diamond to the base and can rotate around the central axis of the observation hole relative to the base and the pressing mechanism. The body supporting structure only needs to be rotated to the suitable position, and the center of a diamond table board can coincide and be aligned with the central axis of the through hole fast by extruding the base with the adjusting mechanism.

The invention relates to an optical lens group which comprises a first lens and a second lens, wherein an optical axis of the first lens and an optical axis of the second lens are superposed; the radius of the second lens is more than that of the first lens; the first lens comprises a first optical part and a first mounting part; the second lens comprises a second optical part and a second mounting part; the first mounting part comprises a first buckling surface, a first bearing surface and a third bearing surface; the second mounting part comprises a second buckling surface and a second bearing surface which can cooperate with the first buckling surface and the first bearing surface; the vertical distance between the third bearing surface and the first bearing surface is D, and D is more than or equal to 0.08 mm and less than or equal to 0.5 mm. The optical lens group is stable in structure, realizes automatic centering and is favorable for rotational symmetry of image quality.

The invention discloses an inner groove machining device for a lathe. The inner groove machining device comprises a clamping piece, a body, a groove depth control device, an axial positioning dimension control device and a clamping device. A long rectangular raised strip is arranged on the left side of the clamping piece, and rectangular guide rail raised strips in the forward-backward direction are arranged on the upper surface and the lower surface of the right side of the clamping piece correspondingly; a guide rail groove slidably matched with the rectangular guide rail raised strips is formed in the right side of the body in the forward-backward direction; the groove depth control device is mounted on the left side of the body and rightwards penetrates through a first through hole to finally stretch into a combined groove in the middle of the right side face of the clamping piece; the clamping device is mounted in the position, located on the left side of the body, of the groove depth control device; and the axial positioning dimension control device is mounted on the clamping device. The dimension is controlled conveniently, operation is convenient and rapid, the machining precision can be guaranteed, and additionally, the machining efficiency can be improved.

The invention provides an indexing and positioning mechanism of a rotary-tower knifetool rest, comprising a main shaft and a box body, wherein the box body is arranged at the periphery of the main shaft. The indexing and positioning mechanism is characterized by also comprising a locking tooth disc, a positioning disc and a movable tooth disc, wherein the movable tooth disc is arranged at the front end of the main shaft; the movable tooth disc is provided with a knifetool disc; the positioning disc is arranged on the box body; the locking tooth disc is arranged on a shaft body of the main shaft and can move on the shaft body of the main shaft along the axial direction of the main shaft; the locking tooth disc is meshed with the movable tooth disc by conical teeth arranged at the front end; and the locking tooth disc is connected with the positioning disc by a guiding and positioning pin. The indexing and positioning mechanism provided by the invention ahs the advantages of reasonable structure and obvious effect.

The invention provides an under-actuated space capturing device with self-adaptability. One ends of a plurality of clamping heads are positioned outside a shell; the other ends of the plurality of clamping heads extend into the shell through a shell end surface opening and are hinged to one end of a telescopic rod; torsion springs are mounted at the hinging positions; the telescopic rod is drivento move in a reciprocating manner in the axial direction of the shell so as to drive the clamping heads to extend out or retract into the shell; when the clamping heads extend out of the shell, the clamping heads are opened outwards in the radial direction of the shell under the effect of the torsion springs; the clamping heads are extruded by the shell end surface opening when retracting into theshell, and the clamping heads are closed to capture a target; pressure sensors are mounted at the contacting parts of the clamping heads and the target to feed back and control motion of the telescopic rod. The under-actuated space capturing device with self-adaptability has the advantages that the structure is small, simple and convenient, the cost is low, the labor is saved, the service life islong, automatic centering is realized, the clamping is reliable, continuous capturing and releasing of multiple targets can be realized, clamping head components possess self-adaptability and wide interface applicability; and greater application values in space operation tasks such as repairing, auxiliary orbit insertion and deorbiting of a failed satellite are realized.

The invention discloses a punching and edge cutting method of a conic cylindrical workpiece and belongs to the technical field of machining assistance. According to the punching operation in the method, alignment of a punch to a mold sleeve is ensured, a locking mechanism locks a rotating disc, a pressing mechanism presses the conic cylindrical workpiece sleeving a material carrying mold, a punching assembly drives the punch to punch a hole in a cylinder body of the conic cylindrical workpiece, and the punching operation is completed. According to edge cutting operation, the locking mechanismloosens the rotating disc, a rotating disc mechanism drives the rotating disc to drive the material carrying mold to rotate, the edge cutting assembly drives a cutter to get close to the conic cylindrical workpiece and make contact with the conic cylindrical workpiece, the cutter cuts the circular ring edge of the conic cylindrical workpiece, and the edge cutting operation is completed. Accordingto the punching and edge cutting method, punching can be carried out on the cylinder body of the conic cylindrical workpiece conveniently and fast, and edge cutting can be carried out on the circularring edge conveniently and fast.

The invention relates to a rough boring head, aiming to provide a rough boring head with the characteristics of convenient adjustment, high precision and long service life. The technical scheme of the invention is as follows: the advanced rough boring head comprises a body, a blade bearing, a locking screw, an adjusting screw and a blade, wherein the top end of the body is provided with a T-shaped groove; two blade bearings are embedded in the T-shaped groove after being arranged in a reverse symmetry manner; the locking screw crosses the column hole of a groove wall at one side of the T-shaped groove transversely and elongated slots in the two blade bearings, and then screws into the screw hole of a groove wall at the other side of the T-shaped groove to fix the two blade bearings on the body; the two blade bearings are respectively provided with a screwed hole aligning with the elongated slots, and the screwed hole is internally provided with an adjusting screw; and the distance between the upper section of the inner side groove wall of the T-shaped groove and the surfaces of the blade bearings is within -0.01-0.05mm. The transition position of the screw head of the locking screw and the screw are manufactured into a conical surface, and the position corresponding to the column hole of the groove wall of the T-shaped groove of the body is manufactured into a conical hole matched with the conical surface.

The invention discloses a sealed type rotation compensator with V-shaped end faces. The sealed type rotation compensator comprises an inner pipe, a gland, a bolt, padding, an anti-attrition mat and a sealing socket. The inner pipe and the padding which are in coaxial fit with the sealing socket are axially limited through an inwards-convex circular bead, the gland arranged on the inner pipe in a sleeving manner is connected with the sealing socket through the bolt, and the pressed gland applies pressure to the padding to form an adjustable shaft sealing structure for the inner pipe relative to the sealing socket. According to the sealed type rotation compensator, the end faces where an inwards-convex circular bead of the sealing socket and an outwards-convex circular bead of the inner pipe are matched are in V-shaped embedded type fit, and the end faces where the inwards-convex circular bead of the sealing socket and the outwards-convex circular bead of the inner pipe are combined are separated through the anti-attrition mat. According to the sealed type rotation compensator, the V-shaped end faces where the sealing socket and the inner pipe are matched are actually positive and negative conical surface combination bodies, the self-centering effect is achieved during pairing, the most advantage of fixed shaft rotation is that the self compensation ability is achieved when the conical surfaces are abraded, and therefore the sealing performance of the sealing structure is stable and durable. Additionally, the paired V-shaped end faces are curve faces, and the bending structure has the pressure damping capacity and the dual sealing effect, so that the sealed type rotation compensator is particularly suitable for mating under the high temperature and high pressure working conditions.

The invention discloses a lens detection device. The lens detection device comprises a first detection device, the lens detection device is used for detecting the center thickness of a lens and is arranged above a carrier, and the lens detection device further comprises a second detection device which is arranged on the periphery of the carrier and is used for detecting the outer diameter error ofthe lens, the second detection device comprises more than or equal to four pneumatic displacement sensors, the pneumatic displacement sensors are positioned on the periphery of the carrier and are arranged at intervals along the circumferential direction of the carrier, each pneumatic displacement sensor is a displacement sensor with a detection end which can move along the radial direction of the lens to until to be in contact with the edge of the lens, and each pneumatic displacement sensor is radially adjustably connected to the base through a mounting device. According to the invention, the center thickness and the outer diameter error of the lens can be detected at the same time, damage to the lens is avoided in the detection process, the detection is accurate and efficient, a largeamount of manpower and material resources are saved, and the lens detection device has great popularization value.

A super-precision directly driving static pressure main shaft dynamic balance method relates to a static pressure main shaft dynamic balance method, which aims to solve the problem that the conventional method cannot realize the precise dynamic balance of a super-precision static pressure main shaft rotor. A conical mounting reference surface is processed at the rear end of the directly driving super-precision static pressure main shaft rotor; a standard ball is directly mounted on the conical reference surface and services as a measurement reference; the change of displacement of the standard ball and the high-precision displacement sensor is measured by adopting a high-precision displacement sensor when a main shaft is in rotation; the change is amplified into a 0-10 V signal via a sensor signal amplifier, which is input to a dynamic balancing instrument; information about the rotation speed of the main shaft, measured by a photoelectric velocimeter, is input into the dynamic balancing instrument; the measured information is processed by the dynamic balancing instrument to obtain the imbalance mass and the phase of the rotor; a required balancing weighting block is added on a dynamic balancing disc according to the indicated phase of the dynamic balancing instrument. The rotation center of the main shaft surely and well overlaps with the rotation center of a measurement reference ball, and influence of a mounting error on the measurement result is eliminated.

The invention discloses machining equipment integrating punching and cutting and belongs to the field of machining assisting equipment. The machining equipment comprises punching assemblies, a material carrying mold, an edge cutting assembly, a rotating disc mechanism and a locking mechanism, wherein the edge cutting assembly is used for driving a cutter; the rotating disc mechanism is used for driving a rotating disc to rotate; and the locking mechanism is used for locking the position of the rotating disc. The material carrying mold is arranged on the rotating disc, and the shape of the material carrying mold is matched with the shape of an inner hole of a conical and cylindrical workpiece. The material carrying mold is provided with a conical face and a cylindrical face, wherein the conical face is attached to the inner surface of a barrel body, and the cylindrical face is attached to the inner surface of a ringlike edge. The conical face is provided with three mold holes, wherein the three mold holes correspond to three holes in the barrel body. Each mold hole is internally provided with a mold sleeve. The three punching assemblies are uniformly distributed around the materialcarrying mold and correspond to the three mold holes in the material carrying mold correspondingly. Each punching assembly is provided with a punch used for conducting punching. By means of the machining equipment, punching and edge cutting of the conical and cylindrical workpiece can be completed one time, and machining efficiency of the conical and cylindrical workpiece is greatly improved.

The invention provides a welding seam allowance of a double-welding-seam structure cartridge receiver and a machining method. The welding seam allowance comprises a front seam allowance and a rear seam allowance and located on two connecting plates between an inner cartridge receiver and an outer cartridge receiver respectively, the welding seam of the front seam allowance is obliquely arranged, the fit clearance is not affected by the axial size, and meanwhile the self-centering effect can be achieved; and concentricity of the inner cartridge receiver and the outer cartridge receiver is guaranteed, and also blind installation is facilitated, and assembly efficiency can be improved; and meanwhile, the rear seam allowance adopts a cylindrical surface welding seam, so that assembly precisioncan be effectively improved. According to the welding seam allowance, precise and small clearance fit of the cartridge receiver of a double-welding-seam structure is achieved, the welding quality ofworkpieces is improved, the assembly relation of two workpieces to be welded is determined, the shape and size relation of the two welding seam allowances is designed, corresponding machining is conducted, and the purposes that two parallel welding seams are precise and free of interference, and small clearance fit is achieved are achieved.

The invention relates to an auxiliary device and method for secondary packaging of a CPU, and belongs to the related field of computer equipment. The device mainly comprises a pedestal; a rotary tablewhich is rotatably connected with the pedestal; a Y-axis sliding table which is fixedly connected with the pedestal; an X-axis sliding table driven by the Y-axis sliding table to operate; a blade installed on the Y-axis sliding table; and a Z-axis positioning mechanism located at one side of the rotary table. The Z-axis positioning mechanism is provided with a Z-axis press block, and the Z-axis press block is provided with a groove for accommodating a metal cover. The sum of the width of the X-axis sliding table and the width of the blade is less than the distance between the Z-axis positioning mechanism and the rotary table. The device can cut a part of an adhesive layer through the design of a brand-new structure, and guarantees the accurate positioning of the metal cover and a PCB. Moreover, the device can guarantee that the moving direction of the blade is parallel to the PCB in an adhesive cutting process, and causes no damage to the PCB while the cover of the CPU is opened.

The invention discloses an ultra-precise static-pressure main shaft dynamic characteristic online testing method capable of eliminating a measuring basis installation error and relates to the field of static-pressure main shaft dynamic characteristic testing. The method solves the problems that an existing method cannot achieve ultra-precise static-pressure main shaft dynamic characteristic online testing or a measurement result can be seriously influenced by the installation precision of a measuring reference plane according to the existing method. According to the ultra-precise static-pressure main shaft dynamic characteristic online testing method capable of eliminating the measuring basis installation error, a cone-shaped installation reference plane is machined at the rear end of a direct-driven ultra-precise static-pressure main shaft rotator, a standard ball is directly installed on the cone-shaped reference plane to serve as a measuring basis, two high-precision displacement sensors are adopted to measure the displacement change between the standard ball and the two high-precision displacement sensors when the main shaft rotates, the measured displacement change values are converted into a digital signal through a sensor signal amplification and data collection system and the digital signal is sent to a computer for data analysis and data processing, and then the ultra-precise direct-driven static-pressure main shaft dynamic characteristic online testing is achieved. Due to the fact that two channels are adopted to carry out measurement at the same time, detection of the axial deviation of the main shaft and detection of the radial deflection of the main shaft are achieved at the same time.

A super-precision directly driving static pressure main shaft dynamic balance method relates to a static pressure main shaft dynamic balance method, which aims to solve the problem that the conventional method cannot realize the precise dynamic balance of a super-precision static pressure main shaft rotor. A conical mounting reference surface is processed at the rear end of the directly driving super-precision static pressure main shaft rotor; a standard ball is directly mounted on the conical reference surface and services as a measurement reference; the change of displacement of the standard ball and the high-precision displacement sensor is measured by adopting a high-precision displacement sensor when a main shaft is in rotation; the change is amplified into a 0-10 V signal via a sensor signal amplifier, which is input to a dynamic balancing instrument; information about the rotation speed of the main shaft, measured by a photoelectric velocimeter, is input into the dynamic balancing instrument; the measured information is processed by the dynamic balancing instrument to obtain the imbalance mass and the phase of the rotor; a required balancing weighting block is added on a dynamic balancing disc according to the indicated phase of the dynamic balancing instrument. The rotation center of the main shaft surely and well overlaps with the rotation center of a measurement reference ball, and influence of a mounting error on the measurement result is eliminated.

The invention relates to a self-centering hole inner clamping device capable of achieving automatic compensation and tension maintaining during part heating. The device comprises a centering shaft, aflange used for mounting expansion claws is arranged on the centering shaft, at least three hinging bases are uniformly distributed on the shaft end surface of the flange, the expansion claws are hinged to the hinging bases respectively, the fixed ends of the expansion claws are hinged to the hinge bases through bolts, and the free ends of the expansion claws extend out of the hinge bases; the shaft section of the centering shaft is sleeved with a jacking sleeve, and a push plate used for pushing the free ends of the expansion claws to move is arranged at the front end of the jacking sleeve. Aguide surface is arranged on the push plate, a pre-tightening spring is arranged at the rear end of the jacking sleeve, and the pre-tightening spring sleeves the shaft section of the centering shaftand is tightly pressed by a compression nut matched with the centering shaft through threads, so that the push plate of the jacking sleeve pushes the free ends of the expansion claws to do tensioningmotion and is used for tensioning and fixing a part from a part inner hole. The hole inner clamping device can conduct automatic radial compensated clamping along with aperture changes of the heated part, part clamping is stable, and the device has a self-centering function and is accurate in part positioning.

The invention relates to a bearing assembly corrector, which comprises a supporting shell, and a bearing outer frame adjustment mechanism is arranged in the supporting shell, and the bearing outer frame adjusting mechanism includes an annular bearing outer frame pressing plate coaxial with the supporting shell, and a bearing outer frame The outer edge of the top pressure plate is inlaid with a number of soft metal balls in an annular array, and a number of screw rods A for supporting the top pressure plate of the bearing outer frame are arranged in an annular array on the closed bottom plate; a support mechanism for the inner frame of the bearing is also arranged in the support shell, The bearing inner frame support mechanism includes an annular bearing inner frame support sleeve, on the outer wall of the bearing inner frame support sleeve, a guide groove with a width larger than the sliding guide sleeve is provided, and a number of screw rods B are arranged in an annular array at the bottom of the bearing inner frame support sleeve. , the end of the screw rod B is pressed against the sliding guide sleeve; the edge of the bearing inner frame support sleeve is fixedly connected between the connecting ring and the inner wall of the supporting shell, and the connecting ring is connected to the bearing outer frame through a number of coil springs. ring.

The invention provides a pipe joint locking device, the pipe joint locking device includes a pipe joint with an external spline and a lock catch with an internal spline, wherein the pipe joint with the external spline is modification of a general six-directional pipe joint, the modification mainly includes that a six-joint part of the pipe joint is changed into a column with a certain thickness, an external spline structure is formed at the edge of the column through an involute tooth profile , and other parts are in accordance with the structure of the general six-directional pipe joint. The lock catch is made of materials the same as the pipe joint, and the lock catch is in a sector structure. An inner end face of the lock catch is in a spline tooth space structure, and an outer end face of the lock catch is in an arc shape. An elliptical hole is formed in the middle of a sector, and is used for fixing the lock catch on a shell body of an accessory through a screw.

The invention provides an indexing and positioning mechanism for a turret tool holder, which includes a main shaft and a box body, and the box body is arranged around the main shaft. Set on the front end of the main shaft, the cutter head is installed on the movable toothed plate, the positioning plate is set on the box body, the locking toothed plate is set on the main shaft body and can move along the axial direction of the main shaft on the main shaft body, and the locking toothed plate passes through The conical teeth arranged at the front end mesh with the movable toothed plate, and the locking toothed plate is connected with the positioning plate through the guide positioning pin. The invention has reasonable structure and obvious effect.

The invention relates to an auxiliary device and method for secondary packaging of a CPU, and belongs to the related field of computer equipment. The device mainly comprises a pedestal; a rotary tablewhich is rotatably connected with the pedestal; a Y-axis sliding table which is fixedly connected with the pedestal; an X-axis sliding table driven by the Y-axis sliding table to operate; a blade installed on the Y-axis sliding table; and a Z-axis positioning mechanism located at one side of the rotary table. The Z-axis positioning mechanism is provided with a Z-axis press block, and the Z-axis press block is provided with a groove for accommodating a metal cover. The sum of the width of the X-axis sliding table and the width of the blade is less than the distance between the Z-axis positioning mechanism and the rotary table. The device can cut a part of an adhesive layer through the design of a brand-new structure, and guarantees the accurate positioning of the metal cover and a PCB. Moreover, the device can guarantee that the moving direction of the blade is parallel to the PCB in an adhesive cutting process, and causes no damage to the PCB while the cover of the CPU is opened.

The invention belongs to the technical field of steel heat treatment, and particularly relates to an arc-shaped cutting board multi-row continuous quenching device which comprises a rack system, a roller way conveying system and a water spraying system. The rack system comprises a fixed rack located on the outermost side of the quenching device and a movable rack connected to the interior of the fixed rack in a lifting mode. The roller way conveying system comprises a plurality of curved surface roller ways which are oppositely arranged on the movable rack and the fixed rack, and a cutting board passage for an arc-shaped cutting board to pass through is formed between the oppositely arranged curved surface roller ways; the water spraying system comprises a plurality of slit nozzles and round hole nozzles which are oppositely arranged on the movable rack and the fixed rack; and the curved surface roller way, the slit nozzle and the circular hole nozzle which are arranged on the movable rack are connected with the movable rack in a follow-up manner. The cutting board is continuously quenched during movement, quenching soft points are eliminated, and cooling efficiency, cooling uniformity and cutting board surface quality are considered; quenching deformation of the cutting board is restrained through the curved surface roller way, and the straightness of the quenched cutting board is improved.

The invention relates to a depth micrometer verification special-purpose testing fixture and a verification method. The depth micrometer verification special-purpose testing fixture comprises a rectangular measuring block and a standard steel ball. The outer surface of the rectangular measuring block is provided with a plurality of groups of circular grooves with different sizes and specifications, and the bottom surfaces of the circular grooves are spherical cambered surfaces; a plurality of groups of standard steel balls are arranged, and the diameter sizes of the standard steel balls respectively correspond to the circular grooves with different sizes and specifications; and the roughness Ra of the outer surface of the rectangular measuring block, the bottom surface of the circular groove and the surface of the standard steel ball is less than 0.1 mm. According to the invention, through the design of the combined structure of the standard measuring block and the standard steel ball,the method for detecting the parallelism between the measuring surface of the bottom plate of the depth micrometer and the measuring surface of the measuring rod is innovated, and the purposes of ensuring the accuracy of a detection result and improving the working efficiency are achieved.

The invention discloses a mushroom planting method based on logs, which comprises the steps of drilling on the logs and inoculating in the drilled holes after the logs are fixed, and is characterized in that the step of plugging the upper ends in the inoculated holes is synchronously realized while drilling and inoculating on the logs. The invention can be more beneficial to growth of mushrooms, and has the advantages of being high in automation degree, good in log operation flexibility, higher in applicability and higher in production efficiency.

The invention discloses a joint bearing inner sleeve outer spherical surface O-shaped oil groove machining device and machining method. The device is composed of a clamp main body, a three-jaw chuck,a positioning and pressing screw, a pressing nut, a balance block, a gland and a self-aligning pad, wherein the clamp main body is composed of a clamping disc and a clamping base plate, moreover, thetwo ends of the clamping disc and the two ends of the clamping base plate are perpendicularly connected, the connecting mode of the positioning and pressing screw and the clamping base plate is in transition fit, and the connecting mode of the self-aligning pad and the pressing screw is in transition fit. According to the joint bearing inner sleeve outer spherical surface O-shaped oil groove machining device and machining method, the operation is easy, three-jaw clamping automatic aligning is achieved, the production efficiency is improved by 6 times compared with that of an original device, the product superior product rate is up to 100%, the cutter loss is reduced by 70%, the production period is shortened, the production cost is reduced, and production and machining of the joint bearinginner sleeve outer spherical surface O-shaped oil groove are facilitated.