238results about How to "Guaranteed parallelism" patented technology

The invention relates to a wide-temperature high-precision optical acceleration sensitive chip and sensor based on a microcavity interferometer principle and a manufacturing method thereof, the wide-temperature high-precision optical acceleration sensitive chip comprises a first substrate, a second substrate and a third substrate, an optical fiber mounting seat and a light through hole are formed on the first substrate, a beam structure and an inertial mass block are processed on the second substrate, and the beam structure is arranged on the third substrate. The first substrate, the second substrate and the third substrate are all made of double-polished super-flat silicon wafers, a single-mode optical fiber assembly is fixed to the optical fiber installation base, the end face of the single-mode optical fiber assembly is subjected to precise grinding and is perpendicular to the axial direction of an optical fiber core, and a first cavity mirror is formed by means of the end face of the side, facing the light through hole, of the inertial mass block. A second cavity mirror is formed on the end face of the single-mode optical fiber assembly, the first cavity mirror and the second cavity mirror form an F-P interference cavity, and the first substrate, the second substrate and the third substrate are connected through the silicon-silicon bonding technology.

The invention discloses a double-guide-column plastic material forming machine. The die comprises a supporting base, a lower die base arranged on the supporting base, an upper die base capable of moving in a reciprocating mode relative to the lower die base, a driving supporting base arranged on the rear portion of the supporting base and a guiding supporting base vertically arranged on the driving supporting base, and a driving lead screw is arranged on the driving supporting base. Two guide rods parallel to the driving lead screw are arranged between the top of the guide supporting base and the supporting base, the upper die base is installed with the driving lead screw and the two guide rods in a matched mode, and a die pressing plate matched with the lower die base is fixedly installed on the upper die base. The mold pressing plate can reciprocate relative to the lower mold base through lifting of the upper mold base so as to press a blank. The device has the advantages that the action reliability and stability are good in the pressing process, and the pressing quality is greatly improved. And the parallelism of the guide rod and the screw rod is ensured, so that the pressing quality is greatly improved. The device is easy to manufacture, low in manufacturing cost, convenient to operate and use and high in use efficiency.

The invention discloses a GPGPU (General Purpose Graphics Processing Unit)-based singular value decomposition acceleration method and equipment, belongs to the technical field of computer technologies, and is used for solving the problems that when an SVD (Singular Value Decomposition) technology is applied to hardware, a relatively large calculation amount and a large amount of memory occupation can be caused, and different index strategies influence the parallel operation efficiency of the hardware, so that the hardware performance is poor. And the overall performance of hardware is reduced. The method comprises the steps of obtaining an index sequence of a to-be-decomposed matrix; generating a plurality of groups of index sequence pairs based on the index sequence; sending a kernel function kernel to the GPGPU, and traversing each group of index sequence pairs through each block in the kernel function kernel; decomposing matrix data corresponding to the first group of index sequences in the to-be-decomposed matrix through the queue in each block to obtain a first decomposed matrix; and decomposing matrix data corresponding to the second group of index sequences in the first decomposition matrix to obtain a second decomposition matrix, and so on until the last group of decomposition matrix is obtained, thereby obtaining a singular value decomposition result.

The invention relates to the field of reinforcement cage forming, in particular to a cast-in-place pile reinforcement cage machining device which comprises a base, fixing ring frames are fixedly arranged on the two sides of the upper end of the base, rotating discs are rotatably installed in the fixing ring frames, the two rotating discs are fixedly connected through a fixing shaft, and a transmission shaft is arranged on one side of one rotating disc; a rotating motor is fixedly arranged at the upper end of the base, an output shaft of the rotating motor is connected with a transmission shaft through a belt, positioning holes allowing main reinforcements to pass through are evenly formed in the rotating discs in the circumferential direction in a penetrating mode, a supporting assembly is slidably installed on the fixing shaft, a transverse plate is fixedly arranged between the top ends of the rotating discs, and a welding assembly is slidably installed on the transverse plate. The supporting assemblies are used for supporting and limiting the main reinforcements so as to guarantee the parallelism between the main reinforcements, meanwhile, the reinforcing cage reinforcements and the main reinforcements are welded and fixed through the welding assemblies, the supporting assemblies always maintain the supporting effect on the main reinforcements, and therefore the cage diameter of the steel reinforcement cage formed through welding can be kept uniform.

The utility model relates to the technical field of welding operation stations, in particular to a container type welding operation station which comprises a box body, a first side plate mechanism, a second side plate mechanism, a chuck welding machine, a first butt joint rail, a second butt joint guide rail and a hoisting supporting column. The chuck welding machine is arranged in the box body; the first side plate mechanism and the second side plate mechanism are arranged on the front end face or the rear end face of the box body in parallel and detachably connected with a bottom plate of the box body. A first guide rail is arranged on the first side plate mechanism; the first butt joint rail is detachably connected to the bottom plate of the box body and detachably connected with the first guide rail; a second guide rail is arranged on the second side plate mechanism; one end of the second butt joint guide rail is detachably connected with the chuck welding machine, and the other end is detachably connected with the second guide rail; the bottom ends of the hoisting struts are connected with a bottom plate of the box body, and the top ends of the hoisting struts penetrate out of a top plate of the box body; the first side plate mechanism can seal the first opening, and the second side plate mechanism can seal the second opening.

The utility model discloses a fisheye flat gasket stamping die which is characterized in that a fisheye extruding station, a punching station, a blanking station and a guide pin mounting station are correspondingly arranged on a concave die plate, a lower base plate and a lower die plate at the lower end part of the die; the female die plate is further provided with a conical rod mounting station and a guide punching rod avoiding station. And a fisheye extruding mounting station, a punching mounting station and a blanking mounting station which are respectively arranged corresponding to the fisheye extruding station, the punching station and the blanking station are arranged on a stripping template and an upper fixing plate at the lower end part of the die. The stripping template is further provided with a conical rod avoiding station, a guide pin avoiding station and a guide punching rod installing station which correspond to the conical rod installing station, the guide pin installing station and the guide punching rod avoiding station respectively. The punching die is high in punching efficiency, the material utilization rate can be remarkably increased, the high precision of the surface parallelism and planeness of the fisheye flat gasket can be guaranteed, and the punching die can be produced in a large scale.

The machining method comprises the following procedures that OP10, a workpiece is fixed to a first tool clamp, the workpiece is in a circular ring shape and is provided with an outer circular face, an inner circular face, a first side end face and a second side end face, the first side end face and the second side end face are located between the outer circular face and the inner circular face and are oppositely arranged, and the outer circular face serves as a clamping face; the first side end face serves as a positioning face, the workpiece is clamped, the second side end face is subjected to rough turning and finish turning, and the inner circle face is subjected to rough turning and finish turning; and OP20, the workpiece is fixed to a second tool clamp, the machined inner circle face serves as an expanding face, the machined second side end face serves as a positioning face, the workpiece is expanded, rough turning and finish turning are conducted on the first side end face, rough turning and finish turning are conducted on the outer circle face, and rough turning and finish turning are conducted on the spigot face. The problems that an annular workpiece is prone to deformation and manual clamping is not in place are solved, and the technical requirements for the parallelism of the two end faces of a product, the coaxiality of the inner circle and the outer circle, the perpendicularity of the end faces and an inner hole / outer circle and the like are met.

The utility model relates to the technical field of aerospace, in particular to a servo actuator zero position adjusting tool which comprises a guide rail, a plurality of sliding blocks, a plurality of sets of measuring pins and a vernier caliper. The upper surface of the guide rail is provided with a downwards-concave sliding groove, and each sliding block is located in the sliding groove and slides in the sliding groove in the extending direction of the sliding groove. Each group of measuring pins is provided with two same pin shafts, the lower end of one pin shaft is fixed to the upper surface of one sliding block, the upper end of each pin shaft vertically extends upwards, and the two pin shafts of each group of measuring pins are used for clamping the two ends of a servo actuator of a rocket; one end of the vernier caliper is fixed to the outer side surface of one pin shaft of one group of measuring pins, and the other end of the vernier caliper is clamped to the outer side surface of the other pin shaft of the group of measuring pins. According to the invention, the accuracy of zero distance measurement of the servo actuator of the rocket can be ensured, so that the success of rocket launching and aerospace tasks is ensured.

The invention relates to a universal mandrel groove grinding device, in particular to a universal mandrel adjustable groove grinding device and a groove grinding method, and aims at solving the technical problems that when an existing clamp is used for grinding sliding grooves of a universal mandrel, it is difficult to guarantee that the included angle between the groove and the central axis of the mandrel meets the technical requirement, indexing of the three sliding grooves is inaccurate, and the repeated positioning precision is low. The device comprises a wedge-shaped bottom plate, and a first clamping mechanism, an indexing mechanism, a supporting mechanism and a second clamping mechanism which are arranged on the wedge-shaped bottom plate, the first clamping mechanism and the second clamping mechanism are used for positioning the universal mandrel to be subjected to groove grinding from the two ends in the axial direction correspondingly. The supporting mechanism is used for supporting and fixing a universal mandrel of a to-be-ground groove; the indexing mechanism comprises a tooth aligning pin seat, a tooth aligning pin and an indexing ring; the tooth aligning pin is mounted on the tooth aligning pin seat, and positioning teeth are arranged at the top of the tooth aligning pin; a plurality of jackscrews are arranged on the indexing ring; a positioning groove is formed in the peripheral surface of the indexing ring; and the positioning teeth are matched with the positioning grooves so as to realize circumferential positioning of the universal mandrel to be subjected to groove grinding.

The invention relates to the technical field of numerical control tools, in particular to a numerical control tool for precision machining, which comprises a tool bar, a tool apron and a blade, an inclined mounting hole is formed in the front side of the tool bar, the axis of the inclined mounting hole and the axis of the tool bar form an angle of 45 degrees, and the inclined mounting hole penetrates through the left side and the right side of the tool bar and does not penetrate through the front end face of the tool bar. The tool apron is connected in the inclined mounting hole in a sliding manner; through the arrangement that the adjusting bolt penetrates through the positioning hole, even if an operator puts the boring cutter with the cutter holder and the unlocked cutter bar into use due to misoperation, the cutter holder slides towards the axial lead direction of the mounting hole and towards the outside of the inclined mounting hole under the action of centrifugal force until the inner side wall of the positioning hole is attached to the outer side wall of the adjusting bolt; the tool apron is limited by the adjusting bolt, so that the tool apron cannot continuously slide towards the outside of the inclined mounting hole; therefore, safety accidents caused by the fact that the tool apron is thrown out of the inclined mounting hole when the fastening assembly is not locked are avoided, and use safety of operators and the tool is guaranteed.

The utility model relates to an assembling device, in particular to a lens assembling device for optical lens production. The lens assembling device for optical lens production comprises a base and a supporting component, the supporting force of the bracket is transmitted to a mounting bottom plate outside the device; the fixing frame is welded at the rear part of the base; the air cylinder is fixedly installed at the top of the fixing frame, and a telescopic rod of the air cylinder penetrates through the fixing frame; the pressing block is fixedly connected to the lower portion of a telescopic rod of the air cylinder. According to the utility model, the cylinder telescopic rod drives the pressing block to press the lens mounted on the lens cone, the motor drives the lens cone to rotate by an angle, and the pressing block is pressed down for multiple times to press the lens, so that the parallelism and the stability of lens mounting are ensured, and the assembly quality is improved.

The invention discloses a plunger sleeve plane grinding clamp which comprises a base, a left clamping mechanism, a right clamping mechanism, a positioning rod, a supporting plate, two springs and two limiting rods. N rows of holes are formed in the base, each row of holes comprises two limiting holes and a positioning hole, and two limiting rod assembling holes and an avoiding hole are formed in the supporting plate; the lower portions of the two springs extend into the two limiting holes in the ith row of holes to abut against the two limiting holes respectively, the upper ends of the two limiting rods are in interference fit with the two limiting rod assembling holes respectively, the middle portions and the lower ends of the two limiting rods are inserted into the two springs respectively, and the supporting plate is supported at the upper ends of the two springs. The lower portion of the positioning rod is in interference fit with the positioning hole in the ith row of holes, and the upper portion of the positioning rod penetrates through the receding hole and can be in clearance fit with the bypass valve sleeve assembling hole of the plunger sleeve. By the adoption of the device, the parallelism between the plane to be ground and the axis of the plunger sleeve and the perpendicularity between the plane to be ground and the bypass valve sleeve assembling hole can be guaranteed, meanwhile, the machining process is simpler and faster, and the cost is lower.

The utility model relates to an air bag pressure detection device for a film sensor. A detection assembly is arranged on the workbench and comprises a rack, an oil cylinder, a middle plate, an air bag bottom plate, an air bag film, a pressing frame and a film sensor, the sliding direction of the middle plate is perpendicular to the air bag bottom plate, an air groove is further formed in the air bag bottom plate, and the air bag film tightly covers the air groove and is fixed to the air bag bottom plate through the pressing frame. The air groove is provided with an air inlet and an air outlet, the air bag bottom plate is provided with an air inlet channel and an air outlet channel, an inlet of the air inlet channel is formed in the side edge of the air bag bottom plate, an outlet of the air inlet channel is communicated with the air inlet, an outlet of the air outlet channel is also formed in the side edge of the air bag bottom plate, and the air outlet in the air groove is communicated with the air outlet channel. The middle plate is driven by the oil cylinder to enable the thin film sensor to be tightly pressed on the air bag film, and the thin film sensor is detected by inflating the air groove. The device is ingenious in structure, convenient and practical.

The mixed type double-layer spiral reaction chamber comprises a first reaction chamber and a second reaction chamber which are sequentially arranged in the sample injection direction, and the first reaction chamber comprises a first double-layer spiral pipe composed of a first spiral pipe and a second spiral pipe which are arranged in a winding mode; the second reaction chamber comprises a second double-layer spiral pipe consisting of a third spiral pipe and a fourth spiral pipe which are wound with each other; the first spiral tube is detachably connected with the third spiral tube, and the second spiral tube is detachably connected with the fourth spiral tube, so that second channels for detecting the peroxide concentration in the sample are respectively formed. Different from an existing double-channel detector, the hybrid double-layer spiral reaction chamber provided by the invention has the advantages that the common part of the two channels is increased to the maximum extent through the double spiral channels, the sensitivity of equipment is improved, the use of parts and the volume and weight of the equipment are reduced, and the portability and the real-time detection sensitivity of the equipment are improved.

The invention relates to the technical field of brake disc detection, and discloses a high-speed rail wheel-mounted brake disc abrasion automatic detection device and detection method.The device comprises a base, two supporting frames are fixed to the top end of the base at intervals, and the two ends of a wheel shaft are supported on the two supporting frames respectively; the portal frame is fixed at the top end of the base; the longitudinal moving mechanism is fixed on the portal frame; the number of the laser displacement sensors is two, the laser displacement sensors are fixed to the moving end of the longitudinal moving mechanism in a spaced mode, and the brake disc on the wheel shaft is located between the two laser displacement sensors. The longitudinal moving mechanism drives the two laser displacement sensors to longitudinally move downwards along the working disc face of the brake disc, then the height change of the working disc face of the brake disc can be measured, and finally abrasion of the working disc face of the brake disc is measured. Therefore, the device can complete the automatic detection of the abrasion of the non-contact high-speed rail wheel-mounted brake disc, saves a large amount of manual labor and time, and improves the detection precision.

The invention discloses a thin stainless steel plate fin type heat dissipation core body machining method. The method comprises the steps of heat dissipation core body brazing structure design, heat dissipation core body part preparation, heat dissipation core body assembly, heat dissipation core body test welding, heat dissipation core body brazing parameter correction and formal brazing implementation, multiple heat dissipation core body connection and heat dissipation core body hot shape correction. According to the difference between the length or the width and the height of the heat dissipation core body, the thin stainless steel plate fin type heat dissipation core body can be divided into two, three and even more heat dissipation core bodies with the reduced height, so that the stability of the heat dissipation core bodies in the brazing process is guaranteed, and the heat dissipation core bodies are connected in series according to the weldability characteristic. Connection can be conducted in a fusion welding mode, a brazing mode and the like, the brazing parameters of the single heat dissipation core body are corrected when brazing is conducted, deformation is controlled in cooperation with a brazing clamp, and finally hot shape correction stress removal and brazing repair are conducted. The problems of brazing collapse, heat dissipation core deformation, low sealing qualification rate and the like in the machining process of the thin stainless steel plate fin type heat dissipation core are solved.

The utility model belongs to heat exchanger technical field, concretely relates to a heat exchanger double tube plate welding structural member. Heat exchanger double tube plate welding structural member includes: the tube side tube plate is provided with the boss at the right end part of the tube side board tube, is provided with the boss ring main part at the left end part of the shell side tube plate, is provided with the boss ring step at the left end part of the boss ring main part, the right end surface of the boss is with the left end surface of the boss ring main part coaxial contact, the inner side surface of the boss ring step is with the outer side surface of the boss adapts, the outer side surface of the boss ring step and the outer side surface of the boss are the welding position.

This utility model discloses a packaging mold for a suspended guide coil, relating to the field of mold packaging technology. The device includes a material carrier plate; the material carrier plate has a material-carrying cavity inside, and the top and bottom of the material-carrying cavity are respectively provided with a first mounting limiting groove and a second mounting limiting groove. The first and second mounting limiting grooves are respectively fitted with a first molding component and a second molding component, which support the top and bottom coils. A lead wire support assembly is provided below the bottom coil. The packaging mold for the suspended guide coil of this utility model, through the mutual cooperation of various structures / components in the lead wire support assembly, ensures the parallelism of the three lead wires during the packaging process, effectively avoiding deformation under external force and improving the packaging accuracy of the coil.

The utility model relates to a pressing and rolling mechanism for after-finishing of denim fabric. The device comprises a mounting base, a first pressing roller and a second pressing roller, the mounting base comprises a fixed base, a first assembling base and a second assembling base, the left end and the right end of the first assembling base are each provided with a first boss, and the left end and the right end of the second assembling base are each provided with a second boss right opposite to the first boss; a pull rod is arranged between the corresponding first boss and the second boss in a penetrating mode, a limiting cap is arranged at one end of the pull rod, a limiting nut is connected to the other end of the pull rod in a screwed mode, a plurality of compressed springs are connected between the second assembling base and the first assembling base, a pointer is arranged on the limiting cap, and scale marks are arranged on the first assembling base. Before the rolling pressure is adjusted every time, all the limiting nuts need to be screwed tightly, all the pointers are reset to zero, then the rolling pressure is controlled by adjusting the rotation angles of all the limiting nuts, it is guaranteed that the rotation angles of all the limiting nuts are the same, the parallelism of the two rolling rollers is guaranteed, and the whole adjusting process is relatively simple.

The utility model discloses a kind of inner measuring micrometer measuring surface parallelism assembly device, one side of its base is equipped with lock frame, the other side of the base of lock frame rear side is equipped with vertical plate, and left tight force screw and right tight force screw are equipped on vertical plate and are opposite;Lock frame clamps the scale sleeve of inner measuring micrometer to make the left measuring claw I and right measuring claw I of inner measuring micrometer be between left tight force screw and right tight force screw, and the top of each measuring claw is equipped with stick hole, and left measuring stick and right measuring stick are equipped with through clamp parallel clamping corresponding to left and right stick hole;Adjusting each tight force screw side portion of corresponding measuring claw is pressed to eliminate the fit gap between measuring screw and threaded shaft sleeve of inner measuring micrometer;Lower fixture and left measuring stick and right measuring stick are inserted in left and right stick hole, and each stick hole is removed clamp after firmly measuring stick is bonded with glue.Using the utility model, it is guaranteed that the parallelism of measuring surface generatrix when inner measuring micrometer is used meets the requirement of national standard.

The utility model relates to laser cutting equipment technical field, concretely relates to a synchronous telescopic load platform. The utility model provides a synchronous telescopic load platform, including base, the slide rail mechanism of setting in the both sides of base and with the support mechanism of slide rail mechanism connection, the slide rail mechanism includes the horizontal setting guide rail, the fixed slide block of being fixed in the one end of guide rail and with the mobile slide block of guide rail sliding connection, the bottom of fixed slide block and mobile slide block passes through telescopic connecting rod and constitutes articulated structure, the support plate that the support mechanism includes the support strip of being located fixed slide block and mobile slide block on and being fixed on support strip. This load platform passes through the support structure design of synchronous telescopic, solves the problem that the spacing of traditional load platform support plate is not adjustable, the replacement of replacement tooling is complicated and the waste material is difficult to discharge, improves the processing flexibility and efficiency of laser cutting equipment.

The invention relates to the technical field of numerical control machine tools, and provides a gantry double-drive synchronous machine tool and a lead screw assembling method.The gantry double-drive synchronous machine tool comprises a machine tool body component, a cross beam assembly and a lead screw, the machine tool body component comprises a machine tool body, two guide rails and two support assemblies, the two guide rails are arranged at the two ends of the machine tool body in parallel, and the two support assemblies are located on the outer sides of the two guide rails respectively; each support assembly comprises a front support and a rear support which are arranged in the extending direction of the guide rail. The two ends of the cross beam assembly are arranged on the two guide rails in a sliding mode, the cross beam assembly comprises a cross beam and nut bases located at the two ends of the cross beam, the cross beam and the nut bases are integrally formed, and nut base holes are formed in the nut bases; the lead screw is arranged in the nut seat hole in a penetrating mode, and the two ends of the lead screw are rotationally connected with the front support and the rear support respectively. The cross beam and the nut bases on the two sides of the cross beam are integrated into a whole part, the assembling precision is improved, the coaxiality of the two nut bases and the corresponding front and rear supports is adjusted at the same time through the two testing rods, and the assembling and adjusting efficiency is improved.

The invention provides a technology capable of easily maintaining a driving mechanism and the like for lifting a lifting pin in a substrate heat treatment device. A substrate heat treatment apparatus (1) is provided with: a heat plate (20) for heat-treating a substrate (9); a substrate raising and lowering mechanism (30) that raises and lowers the substrate (9) above the heat plate (20); a main body frame (11) for supporting the hot plate (20) and the substrate lifting mechanism (30); and a pair of sliding members (15) capable of integrally pulling out the heat plate (20) and the substrate lifting mechanism (30) from a processing position (P1) on the inner side of the main body frame (11) to a maintenance position (P2). The substrate lifting mechanism (30) is provided with: a plurality of lifting pins (31); a frame member (35) that supports the plurality of lifting pins (31); a motor (37) located outside the frame member (35) in plan view; and a power transmission mechanism (38) for transmitting the power of the motor (37) and raising and lowering the frame member (35).

The utility model discloses railway turnout switching equipment and a turnout hook-shaped external locking device thereof, which belong to the technical field of rail transit, and the turnout hook-shaped external locking device comprises a switch rail connecting iron component, a push-pull plate component, a connecting iron seat component and a lock hook, the push-pull plate assembly is connected with the switch rail connecting iron assembly and the connecting iron base assembly. The switch rail connecting iron assembly is connected with the connecting iron seat assembly; and the lock hook is connected with the connecting iron seat assembly. The turnout hook-type external locking device is simple in structure, convenient to install, reasonable in design, small in abrasion between parts, long in replacement period, small in later maintenance workload, high in adaptability to extension and retraction of a switch rail, beneficial to keeping parallelism between the external locking parts, capable of reducing frictional resistance during turnout switching, capable of improving reliability of turnout switching, and capable of being used for improving the reliability of turnout switching. And the workload of turnout maintenance is reduced.

The utility model relates to the technical field of mechanical transmission, in particular to a lead screw motor guide rail positioning seat which comprises a base plate, a clamping groove is formed in the base plate, a positioning block is inserted in the clamping groove, moving grooves are symmetrically formed in the upper end of the positioning block, and a first sliding block and a second sliding block are installed in the two moving grooves in a sliding mode respectively. A first installation block is fixedly installed on the first sliding block, a positioning plate is fixedly installed on the first installation block, a second installation block is fixedly installed on the second sliding block, a positioning column is fixedly installed on the second installation block, a positioning groove is formed in the lower surface of the positioning column, and the positioning column is parallel to the positioning plate. Through mutual cooperation of the positioning block, the first sliding block, the second sliding block, the first installation block, the positioning plate, the second installation block and the positioning column, the installation parallelism of the lead screw motor and the guide rail can be guaranteed, time and labor are saved during installation, and industrial requirements are met.

The utility model relates to a flatness detection device. The flatness detection device comprises a base, a detection assembly and a supporting structure. The base is provided with at least three mounting holes; the detection assemblies are in one-to-one correspondence with the mounting holes, each detection assembly comprises a dial indicator and a measuring head structure, each dial indicator comprises a dial plate part and a measuring rod part connected with the dial plate part, at least part of each measuring rod part is fixed in the corresponding mounting hole, and each measuring head structure comprises a connecting part and a spherical measuring head which are connected with each other. Part of the connecting part is located in the mounting hole and connected with the measuring rod part, and the spherical measuring head is located on the side, opposite to the dial plate part, of the base. The at least three supporting structures comprise mounting parts and spherical supporting parts, the mounting parts are fixed to the base and located on the side where the spherical measuring head is located, and the spherical supporting parts are connected to the ends, away from the base, of the mounting parts. According to the flatness detection device, high-precision and high-efficiency flatness detection can be realized.

The utility model discloses a coil orientation forming die which comprises a forming cavity used for forming a magnetic sheet, the forming cavity is formed by splicing an upper die base and a lower die base, an upper die coil is wound on the upper die base in the circumferential direction, a lower die coil is wound on the lower die base in the circumferential direction, and the winding direction of the upper die coil is the same as that of the lower die coil. An ejector pin is movably connected into the lower die base, the end face, close to the upper die base, of the ejector pin is used for being spliced into the lower end face of the forming cavity, the ejector pin is made of magnetic steel, and the upper die base and the lower die base are made of non-magnetic steel. The coil orientation forming die provided by the utility model ensures the parallelism of an orientation magnetic field and is low in cost.

The utility model relates to large-diameter external-penetrating eddy current flaw detection equipment which comprises a bottom plate, the lifting mechanism comprises a lifting rod slidably arranged on the bottom plate in the vertical direction and an adjusting hand wheel arranged on the lower surface of the bottom plate; the detection mechanism is arranged above the bottom plate, the detection mechanism comprises an external penetration detection probe, and the external penetration detection probe comprises a detection coil; the conveying mechanism comprises a plurality of conveying wheels which are arranged on the side close to the workpiece inlet end of the detection mechanism and the side close to the workpiece outlet end of the detection mechanism respectively, the conveying wheels are rotationally arranged on the upper surface of the bottom plate, and each conveying wheel comprises two circular truncated cone parts which are coaxially connected in an abutting mode; the projections of the end faces, abutting against each other, of the two circular truncated cone parts on the separated end faces of the two circular truncated cone parts completely fall into the separated end faces of the two circular truncated cone parts. According to the utility model, the relative position of the axis of the detected workpiece and the axis of the detection coil can be conveniently adjusted through the lifting mechanism.

The present invention discloses a printing plate device for a curved screen printing machine, comprising a slider connecting plate, a fixed rod, a fixed block, a support block, a connecting rod, an adjustment block, a plate alignment adjustment rod, a screw, an adjustment sleeve, a retaining ring, a connecting block, a connecting bracket, a height adjustment rod, an angle adjustment rod, a screen printing plate pad, a screen printing plate, a pad connecting rod, a pad fixing nut and a front and rear adjustment rod. The present invention achieves the adaptation between the screen printing plate and different substrates by arranging a height adjustment rod, an angle adjustment rod, a plate alignment adjustment rod and a front and rear adjustment rod on the printing plate device, thereby ensuring the parallelism between the screen printing plate and the substrate surface and the rebound amount of the screen printing plate, reducing the production cost, improving the working efficiency of the automatic screen printing machine, and improving the adaptability of the printing plate device.

The tool for detecting and adjusting the parallelism of the washboard of the cigarette making machine comprises a detection block, the lower end of the detection block is detachably installed at the end of the washboard, an arc face matched with a cigarette bearing groove in a twisting and connecting drum wheel is manufactured on the edge of the upper end board of the detection block, and the parallelism of the washboard is judged by judging whether the arc face is matched with the arc face of the cigarette bearing groove or not. And the parallelism of the washboard is adjusted on the premise that the arc surface is matched with the arc surface of the cigarette bearing groove. According to the utility model, the original structure of the washboard is utilized, and the detection block of which the upper end plate edge is the arc surface matched with the cigarette bearing groove is arranged at the position for mounting the starting rail on the washboard, so that a basis is provided for parallelism detection and position adjustment of the washboard, and the problems of time and labor waste and poor consistency of manual adjustment of the washboard depending on experience are solved; the device is simple in structure, reasonable in design and convenient to disassemble and assemble, the parallelism detection and adjustment efficiency of the washboard is improved on the premise that the original structure of the washboard is not changed, and the use value is high.