412results about How to "High centering accuracy" patented technology

The invention relates to a bidirectional self-centering fixture for workpieces, and belongs to the field of machinery manufacturing. A bidirectional self-centering clamping mechanism is fixedly connected with a base. A nut pressing plate is fixedly connected with the base. The nut pressing plate is connected with a locking nut in a pressed mode. A locking screw is connected with the locking nut in a threaded mode. The front end of the locking screw is in a semi-sphere shape and is connected with the bidirectional self-centering clamping mechanism in an abutted mode. A locking handle is fixedly connected with the rear end of the locking screw. A tip assembly is located below a conical face hole in the base. The bidirectional self-centering fixture is high in universality, especially suitable for the workpieces with the sections being quadrilateral or polygonal, high in bidirectional self-centering accuracy and easy to operate.

A hybrid vehicle drive system is designed to have dimensions that are shorter in an axial direction and improved centering accuracy of a rotor, in order to prevent deterioration of motor performance. A rotor support plate (15) has a flat-plate shaped disk portion (15b), and is fixed to a front cover (32) of a take off device (5), such as a torque converter, or the like, at the disk portion with a set block (67) and a bolt (69). A forward portion of the take off device is centered and supported by fitting a center piece (33) to a crankshaft (3). A support-plate hub (15a) is in contact with the center piece (33) at a small area (33c) in a vicinity of a fixing plane P of the disk portion (15b) and the set block (67), and thus centering of the rotor (13) is executed.

The invention belongs to the field of electrofluid jet printing spray-head correlation technique, and discloses an airflow auxiliary electric jet printing spray-head integrated with a grounding electrode. The airflow auxiliary electric jet printing spray-head comprises a liquid inlet cylinder, a gas hood, a metal needle head, an electric lead, an electrode cover and an annular electrode. The liquid inlet cylinder is connected to the gas hood and is partially held in the gas hood; two ends of the gas hood connected with the liquid inlet cylinder and the electrode cover; one end of the metal needle head and the liquid inlet cylinder form threaded connection, and the other end of the metal needle head penetrates through the gas hood so as to stretch into the electrode cover; one end of the electric lead is connected to a high voltage power supply, and the other end of the electric lead penetrates through the liquid inlet cylinder so as to be connected to the metal needle head; the annular electrode is embedded into the electrode cover; and the grounding electrode is integrated into the airflow auxiliary electric jet printing spray-head through grounding. The airflow auxiliary electric jet printing spray-head provided by the invention is provided with the grounding electrode through arranging the annular electrode, so that a collecting substrate has no need to be grounded, and the application range and the flexibility are improved.

The invention relates to the technical field of automatic machine assembling, in particular to a self-adaptation flexible assembling device for a hydraulic cylinder head body. The technical problem ofassembling of a cylinder barrel and a cylinder head body of a large multistage hydraulic cylinder is solved. The self-adaptation flexible assembling device comprises a cylinder barrel flexible clamping platform and a cylinder head body flexible clamping platform which are independent from each other and need to be used in cooperation with each other. The cylinder barrel flexible clamping platformis used for fixing a cylinder barrel, and the cylinder barrel flexible clamping platform can do perpendicular lifting motion and horizontal motion in the radial direction of the cylinder barrel. Thecylinder head body flexible clamping platform is used for fixing a cylinder head body, the cylinder head body flexible clamping platform can do horizontal motion along the axis of the cylinder barrel,the cylinder head body flexible clamping platform drives the cylinder head body to move towards the cylinder barrel and rotate synchronously, and finally the cylinder head body and the cylinder barrel can be assembled through thread connection. By means of the self-adaptation flexible assembling device, the historic problems that operation is complex, the assembling efficiency is low, the surface, making contact with a lifting clamp, of the cylinder barrel is likely to be damaged, and even the cylinder barrel is disengaged in the traditional cylinder barrel and cylinder head body assembling process can be effectively solved.

Provided are: an exchangeable tip cutting tool in which breakage of the threaded section and breakage of the thread ridges during installation of the machining head and under increased cutting load during cutting are limited and which is capable of performing machining with high efficiency; and a machining head and a holder to be used in the exchangeable tip cutting tool. The flank angle (α) of the pressure flank (11) is set to be larger than the flank angle (β) of the clearance flank (12); and a holder (2, 2a) having a female threaded fastening section (8) wherein the angle of the screwing surface of the pressure flank is set to be larger than the angle of the screwing surface of the clearance flank.

The invention discloses a silicon chip prealignment device. The silicon chip prealignment device comprises a rotating platform which is utilized for adsorbing a silicon chip and driving the silicon chip to rotate, an edge horizontal sensor which is utilized for acquiring horizontal position information of a silicon chip edge, an edge vertical sensor which is utilized for acquiring vertical position information of the silicon chip edge, and a controller which is utilized for synchronously controlling the rotating platform, the edge horizontal sensor and the edge vertical sensor. When the rotating platform rotates, the controller transmits synchronous trigger signals to the edge horizontal sensor and the edge vertical sensor, and the edge horizontal sensor and the edge vertical sensor acquire respective current measured values simultaneously and edge horizontal position information so that edge vertical position information can be acquired synchronously, wherein the current measured value which belongs to a measured point and is acquired by the edge vertical sensor is utilized for compensation of the current measured value which belongs to a silicon chip edge and is acquired by the edge horizontal sensor. Through the silicon chip prealignment device, all horizontal measured values of a silicon chip edge can be obtained when a silicon chip makes a round, and thus an eccentric value and a gap direction of the silicon chip can be determined. The invention also provides a silicon chip prealignment method.

The invention relates to a vehicle pedal adjuster, which comprises pedal support, pedal rod, pushing rod, and pedal arm, wherein the outer end of pedal is connected to pedal; the pedal arm is hinged to pedal support, pedal rod and pushing rod; the pedal arm has guide groove; the inner end of pedal rod is connected to the guide groove; the pedal rod via spline is hinged to driving arm whose outer end is connected to driving axle; the driving axle is through the pedal arm to connected the motor driver; the motor driver and the driving arm are mounted at two sides of pedal arm; the motor driver comprises motor and worm reducer; the motor axle is connected to worm; the upper part of pedal support has pedal instruction lamp switch; the pedal arm and pedal support are hinged by support axle, while the connection has return spring; the pedal arm is hinged to pushing rod via pin axle. The invention has high safety.

A main shaft of a motor head of a no dig guiding driller comprises a driving sleeve which is butt jointed with a driving system, a floating core shaft which is arranged in the driving sleeve, which is slideably matched with an inner hole of the driving sleeve, a transmission torsion splined hub which is fixedly and hard connected with the bottom of the driving sleeve, the transmission torsion splined hub is engaged with an outer spline on the lower portion of the floating core shaft to transmit torque, meanwhile the corn shaft achieves upper and lower floating along the spline, and a floating distance limiting mechanism is arranged between the floating core shaft and the driving sleeve. The torque is transferred to the floating core shaft through an output flange and the transmission torsion splined hub by adopting a core shaft floating way, the return rotating of a drilling tool is achieved by a drill rod of a damageable short segment of the floating core shaft, the core shaft which has no middle transmission step can directly float, and the floating range is bigger than a traditional motor head floating way, the motor head which is fed or back dragged can stay on any position to guarantee the reliability of floating. Centring accuracy is high, a main shaft is not suppressed when the drill rod is detached, and the main shaft is easy to be centered when the drill rod is mounted.

The invention provides a welding seam tracking and controlling system for combined welding. The welding seam tracking and controlling system comprises a laser sensor, an image processing computer and a controller. The laser sensor is used for collecting first position image information and second position image information of a welding seam; the image processing computer is used for calculating the transverse deviation and the longitudinal deviation of the welding seam according to the first position image information and the second position image information; welding parameters of the welding seam are obtained according to the second position image information, and the laser output power controlling quantity is calculated according to the welding parameters; the transverse deviation is transformed into a transverse deviation voltage, the longitudinal deviation is transformed into a longitudinal deviation voltage, and after delay calculation is conducted according to the preact delay quantity, the transverse deviation voltage, the longitudinal deviation voltage and the laser output power controlling quantity are sent to the controller; the controller is used for controlling an actuator to correct the transverse deviation according to the transverse deviation voltage and correct the longitudinal deviation according to the longitudinal deviation voltage so that a combined welding torch and the welding seam can be maintained in a centering state; the output energy of the laser sensor is controlled according to the laser output power controlling quantity to ensure the welding quality.

The invention relates to a conical air floating shaft system, which comprises an air floating main shaft, an air floating inner shaft sleeve, an air floating outer shaft sleeve, and positioning plates, wherein the air floating inner shaft sleeve is arranged on the outer side of the air floating main shaft, and is matched with the air floating main shaft, the air floating outer shaft sleeve is arranged on the outer side of the air floating inner shaft sleeve, and is matched with the air floating inner shaft sleeve, and the positioning plates are arranged on both ends of the air floating main shaft. The positioning plates are fixedly connected with the air floating main shaft. Both ends of the air floating outer shaft sleeve are provided with an anti-thrust plate. The anti-thrust plate is fixedly connected with the positioning plate. In the prior art, the positioning accuracy of the existing air floating shaft system is not high, and the dry friction is easily generated. With the present invention, the technical problems in the prior art are solved, and the conical air floating shaft system is provided, wherein the conical air floating shaft system integrates the advantages of the air floating main shaft, the air floating main shaft is matched with the air floating shaft sleeves so as to effectively improve the stiffness of the shaft system, the conical surface match is adopted so as to provide high centering accuracy, and it can be ensured that the air floating shaft system of the present invention has high accuracy when the off-axis end surface is high.

A stabilizer link and a manufacturing method therefor in which there is less concentration of stress, the stud releasing load is improved, and the accuracy of centering of the ring member is improved. A second subassembly is formed by inserting a ball seat of a first subassembly into a ball seat receiving portion of a housing and by arranging a ring member at an opening side of the ball seat. A stopper base portion is abutted to an opening end surface of the ball seat. An outer peripheral end portion taper surface has a taper shape in which a diameter is increased toward an opening side in an axial direction, in a stopper base portion and it is abutted to a slope portion for a stopper base of the housing. An opening side of the ball seat is pressed through the ring member by caulking inwardly a caulking portion.

The automatic producing interlink machine unit consists of material feeding and extruding mechanism, material supplying frame mechanism, extruder temperature controlling mechanism, roller mechanism, receiving raceway mechanism, rubber sheet cooling mechanism, conveyer belt frame, conveyer belt mechanism, two-site cord fabric opening mechanism, compound winding and conveying mechanism, passive winding mechanism, length counting and cutting conveyer belt mechanism, winding conveyer belt frame, winding conveyer belt mechanism, two-site winding mechanism and electric control system. The present invention is one advanced photoelectromechanical system and may be used in producing high quality inner lining thin rubber sheet.

A mold for an optical component is provided which includes a first mold and a second mold which mold the optical component, a cylindrical body whose rotational symmetry axis is identical with a second symmetry axis about which a second mold is rotationally symmetric, a trunk mold whose rotational symmetry axis is identical with a first symmetry axis about which a first mold is rotationally symmetric, a supporting means which supports the first mold in such a way that the first mold moves relatively to the trunk mold in parallel with the first symmetry axis, and a second tapered surface and a first tapered surface which contacts the second tapered surface, which connect the cylindrical body with the trunk mold in such a way that the second symmetry axis is identical with the first symmetry axis.

The present invention provides a shift device capable of improving positioning accuracy of a center of pivot of an operating member. In a shift lever device, a supporting shaft is formed to a retainer, and a supporting hole is formed to a shift lever plate. Furthermore, by sliding the retainer in the support shaft axial direction with respect to the shift lever plate, the supporting shaft is inserted into the supporting hole, and the shift lever plate is supported by the retainer so as to be capable of pivoting. Positioning accuracy of the supporting shaft 116 with respect to the retainer, and positioning accuracy of the supporting hole 16 with respect to the shift lever plate can be increased as a result. The positioning accuracy of the center of pivot of the retainer is thereby capable of being improved.

A chuck including: (a) a main body; (b) three slot-defining members each constituted by a member independent of the main body and defining therein a guide slot, and detachably attached to the main body; (c) three jaws each including (c-1) a fitted portion slidably fitted in the guide slot defined in the corresponding slot-defining member and (c-2) an engaging portion which projects from the fitted portion in an axial direction and which is configured to engage with a circumferential surface of an object that is to be held by the chuck; and (d) three pairs of pressing members detachably fixed to the three slot-defining members. Each pair of the three pairs of pressing members engage with the fitted portion of the corresponding jaw, for thereby preventing separation of the fitted portion of the corresponding jaw from the guide slot defined in the slot-defining member.

The invention relates to a photoetching projection objective wave aberration detection method based on a space image frequency spectrum, which is characterized in that the space image centering and the wave aberration solving are carried out through frequency spectrum matching. The method provided by the invention comprises the following steps: 1) computing the simulation space images corresponding to different Zernike aberration combinations by utilizing photoetching simulation software PROLITH and carrying out the Fourier transform on each space image; 2) carrying out the principal component analysis on simulation space image frequency spectrum sets and establishing a regression matrix between the principal component coefficients and the Zernike coefficients through linear regression analysis; 3) operating the space image acquisition program of a photoetching machine and finishing the acquisition of actual-measurement space images; 4) centering the actual-measurement space images by utilizing a frequency spectrum centering method and modifying the frequency spectrum of the actual-measurement space images into the frequency spectrum corresponding to ideal position space images; and 5) computing the wave aberration of a projection objective. The photoetching projection objective wave aberration detection method provided by the invention can avoid the errors caused by space image difference values, simplifies the testing procedures and improves the testing accuracy.

The invention provides a high-speed rotation ultrasonic grinding main shaft. A high-coaxiality conical hole is used for positioning, and the centering precision is improved. Through the design of a flange in the shape like the Arabic number 7, the contact distance is lengthened, one-time machining is conducted, and the installing reliability of an ultrasonic transducer is improved. No mechanical contact exists between a primary coil and a secondary coil, and no abrasion exists. A closed space is formed by an aluminum shell, and magnetic field leakage is obstructed. Cold nitrogen makes direct contact with a heating piezoelectric ceramic piece in a main shaft cavity, a large amount of heat is brought away, and the heat dissipation efficiency is improved.

The invention discloses a laser electronic target based on non-diffraction light. Laser transmitted by a cube corner pyramid lens enters a light splitting circuit and is divided into a horizontal beam and a vertical beam; the horizontal beam is reflected by a plane mirror and a beam splitter and then enters a conical lens to form a non-diffraction light spot O2; an image information processing system captures the non-diffraction light spot O2, and a horizontal yaw angle and an inclination angle of an object to be measured can be obtained by calculation of the center coordinate of the non-diffraction light spot; the vertical beam is reflected by the plane mirror on a gravity pendulum with damp, is projected into the beam splitter and enters the conical lens to form a non-diffraction light pot O1; and the image information processing system captures the non-diffraction light and acquires the roll angle of the object to be measured according to the calculation of the center coordinate of the non-diffraction light pot O1. The laser electronic target realizes all-optical space angle measurement based on the non-diffraction light, and has the characteristics of high space angle measurement accuracy, stability, and ambient light interference resistance capacity and compact structure.

The invention discloses a PCR full-automatic fiber cord fabric cutting-splicing machine, which comprises an unwinding-conveying device, an electrically heated puncturing device, a cord fabric conveying-cutting device, an automatic cord fabric transfer device, a cord fabric conveying device, an automatic cord fabric splicing device and an automatic deviation-rectifying coiling device, which are linked up. The PCR full-automatic fiber cord fabric cutting-splicing machine adopts full-automatic line production, and has the advantages of puncture without causing damages to cord fabrics, automatic transfer and splicing, high centering precision, high splicing speed, continuous operation capability, high production efficiency and low labor intensity.

The invention discloses a belt pulley flatness detection device. The belt pulley flatness detection device comprises a framework, and a clamping rotation apparatus and a laser detection apparatus which are arranged in the framework. The clamping rotation apparatus comprises a clamping mechanism, a rotation clamping cylinder, a central positioning mechanism and a rotation mechanism, wherein the clamping mechanism is used for clamping a belt pulley; the rotation clamping cylinder acts on the clamping mechanism so as to mount and dismount the belt pulley inside the clamping mechanism; the central positioning mechanism is used for carrying out central positioning on the belt pulley; and the rotation mechanism is used for driving the clamping mechanism to rotate. The laser detection apparatus is used for carrying out laser detection on the belt pulley arranged in the clamping mechanism. According to the invention, by reasonable structure arrangement, the belt pulley flatness detection device is simple in structure and high in working efficiency, the precision of the central positioning of the belt pulley is high, the stability is good, and the usage requirements for flatness detection carried out on the belt pulley by an enterprise are met.

The invention discloses a centering device for motor stator-rotor punching sheet production. The centering device comprises a conveying mechanism and a centering mechanism; the conveying mechanism is provided with a conveyor belt, each of two sides of the conveying mechanism is provided with a support frame, a working platform is arranged between the support frames, the bottom of the working platform is connected with a first fixed plate and a second fixed plate in a sliding manner, each of the bottoms of the first fixed plate and the second fixed plate is provided with a clamping claw, the bottom of the working platform is provided with a driving mechanism; the driving mechanism is connected with the first fixed plate; the centering mechanism is connected on the working platform in a rotation manner, a first connecting rod is arranged between the centering mechanism and the first fixed plate, and a second connecting rod is arranged between the centering mechanism and the second fixed plate. Through the adoption of the centering device disclosed by the invention, the centering work of the stator-rotor punching sheet can be fast finished through three efficient and order steps: firstly clamping, then positioning, and finally centering; the centering device is strong in stability, high in centering precision, automatic and efficient; and the product quality of the stator-rotor punching sheet is improved.