1037 results about "Camshaft" patented technology

A seat assembly is provided with a seat frame and a seat support. A plurality of linear actuators or a camshaft are supported on the frame and oriented toward the seat support surface to each provide a localized percussive massage upon the seated occupant. Alternatively, a guide is supported upon the seat frame. A plurality of massage plates is provided on the guide. A plurality of massage nodes is each provided on one of the plurality of massage plates so that compression upon each massage plate flexes a region of each massage plate to extend each massage node forward to provide a localized massage upon the seated occupant.

The invention provides a camshaft detection and classification working method. The camshaft detection and classification working method comprises the following steps: S1, at least one to-be-detected camshaft exists on a feeding channel of a feeding step; s2, a to-be-detected camshaft on a feeding channel in the feeding step is conveyed to a vertical moving part; s3, the camshaft to be detected is detected by the detection piece, and if the camshaft is qualified after detection, the step S4 is executed; if the camshaft is an unqualified camshaft after detection, executing the step S5; s4, conveying is conducted through an upper-layer discharging step feeding channel; and S5, the unqualified camshafts are transferred to the feeding channel of the lower-layer discharging step through the vertical moving part and conveyed through the feeding channel of the lower-layer discharging step. The stepping assembly is arranged to carry out vertical and front-back reciprocating motion of the camshafts so as to achieve stepping of the camshafts, at least two layers of discharging stepping feeding channels which are arranged in an up-and-down alignment mode are arranged, the detected unqualified / qualified camshafts are moved to the discharging stepping feeding channels of the corresponding layers through the vertical moving pieces, and detection and classification of the camshafts are completed. Manpower is saved; and the classification accuracy is high.

An impact tool including a housing, a motor having an output shaft rotatable about a first axis, and an impact mechanism. The impact mechanism includes a camshaft, an anvil, and a hammer configured to reciprocate along the camshaft to impart rotational impacts to the anvil in a first operating mode and to directly drive the anvil in a second operating mode. The impact tool further includes a crankshaft coupled to the anvil for co-rotation with the anvil, a yoke driven by the crankshaft to reciprocate about a second axis perpendicular to the first axis, an output drive, and a pawl configured to selectively couple the output drive to the yoke for co-rotation with the yoke in a first rotational locking direction about the second axis and to permit the yoke to rotate relative to the pawl in a second rotational locking direction about the second axis.

The invention discloses an engine phase synchronization method and system, a vehicle and a storage medium, and relates to the technical field of engine control, and the method comprises the steps that a crankshaft pulse signal output by a crankshaft position sensor and a camshaft pulse signal output by a camshaft position sensor are received in real time; analyzing the crankshaft pulse signal and the camshaft pulse signal in real time, and judging whether the crankshaft pulse signal triggers a preset first synchronization condition or not and whether the camshaft pulse signal triggers a preset second synchronization condition or not; if the crankshaft pulse signal triggers the first synchronization condition, a first synchronization strategy is adopted to determine the initial rotation position of a crankshaft signal panel and the tooth ID and angle of each tooth, and engine phase synchronization is achieved; and if the camshaft pulse signal triggers the second synchronization condition, a second synchronization strategy is adopted to determine the initial rotation position of the crankshaft signal panel and the tooth ID and angle of each tooth, and engine phase synchronization is achieved. The problem that the engine phase synchronization speed is low is solved.

The invention discloses a cam shaft box, an engine and a vehicle, the cam shaft box comprises an ignition coil mounting hole, the ignition coil mounting hole is used for mounting an ignition coil, the ignition coil mounting hole comprises a sealing section, and the ignition coil is matched with the inner wall of the sealing section; and the exhaust hole is formed in the side wall of the ignition coil mounting hole and located in the lower side of the sealing section, and the ignition coil mounting hole is communicated with the outside through the exhaust hole. The exhaust hole is formed in the lower side of the sealing section, exhaust does not need to pass through the sealing section, and exhaust is smoother.

The invention discloses a continuous passing type quenching conveying device for diesel engine camshafts in the technical field of diesel engine camshaft machining. The quenching conveying device comprises a first conveying mechanism, a plurality of camshaft fixing mechanisms and a plurality of quenching mechanisms, wherein the camshaft fixing mechanisms and the quenching mechanisms are arranged on the first conveying mechanism. Wherein the quenching mechanism comprises a bearing frame connected with the first conveying mechanism, a driving device arranged on the bearing frame and a split type induction coil connected with the driving device, and the split type induction coil comprises two sets of symmetrically-arranged arc-shaped coils and a driving part used for driving the two arc-shaped coils to move face to face or back to back. According to the quenching mechanism, the split type induction coil is driven by the driving equipment to move in the axial direction of the diesel engine camshaft main body for quenching work, the diesel engine camshaft main body does not need to be repeatedly clamped, transferred and reset, the quenching treatment work efficiency of the diesel engine camshaft main body is greatly improved, and the production efficiency is improved.

The invention discloses a camshaft end face defect detection method and system. The method comprises the following steps: collecting eight end face images of the camshaft, distinguishing each end face image according to whether a thread exists at the vertex of the end face, and classifying the end face images; processing the first type of end face images and the second type of end face images to extract contours in the corresponding end face images, and extracting regions of interest in the corresponding end face images based on the contours to obtain regions of interest images; inputting the third-class end face image into a semantic segmentation model for processing, and extracting a region of interest to obtain a region of interest image; according to an end face image corresponding to the region-of-interest image, selecting a target detection model for detection so as to output a detection result indicating whether a defect exists in the region-of-interest image; and judging that the end face of the cam shaft does not have defects when the images of the interested areas do not have defects. The scheme is low in cost and high in efficiency.

The invention discloses a self-clearance-eliminating cycloidal pin gear speed reducer, and aims to solve the double pain points that in the prior art, an assembly clearance is difficult to control, and the clearance cannot be compensated after abrasion. The speed reducer comprises a machine shell, a main bearing, an output flange, a cycloidal gear, a conical pin and an elastic pressing piece, and is characterized in that the conical pin, cycloidal teeth of the cycloidal gear and a pin groove of the machine shell are all provided with the same taper, the elastic pressing piece is installed on the machine shell and exerts pre-compression force on the pin, and the elastic pressing piece, the conical pin and the pin are made to be tightly attached to eliminate an initial gap; after abrasion, the elastic pressing piece can push the conical pin needle to conduct self-adaptive gap compensation along the conical surface, and the meshing stability is guaranteed through the taper self-locking characteristic. Meanwhile, the structure can be flexibly matched with three transmission modes of'a first-stage planetary gear and a second-stage cycloid ', 'single-stage cycloid cam shaft driving' and'single-stage cycloid cam shaft and a cross slide block ', the effects of reducing machining and assembling cost, maintaining transmission precision for a long time and reducing maintenance loss are achieved, and the structure is suitable for the field of precision transmission.

The utility model discloses a cam shaft bowl-shaped plug feeding device which comprises a rectangular plate, a hole groove is formed in the rectangular plate, supporting plates are fixedly connected to the two ends of one side of the rectangular plate, and the faces, close to each other, of the two supporting plates are each connected with a clamping assembly. A feeding frame fixedly connected with the rectangular plate is arranged on the same side of the two clamping assemblies, a feeding groove is formed in the upper end of the feeding frame, a fixing groove communicating with the feeding groove is formed in the side, close to the supporting plate, of the feeding frame, and hinge movable plate doors are connected to the side walls of the two ends in the fixing groove correspondingly; the feeding groove is filled with a plurality of bowl-shaped plugs, and the side, away from the supporting plate, of the rectangular plate is fixedly connected with a crimping assembly. According to the utility model, self-adaptive clamping of camshafts with different diameters and automatic crimping of bowl-shaped plugs are realized, and the applicability and the production efficiency are improved.

The utility model relates to the technical field of camshaft machining, in particular to a rotating seat for camshaft machining. Comprising a base, a vertical plate is connected to the base, a supporting frame is connected to one side of the vertical plate, a first motor is connected to the supporting frame, a rotating rod penetrating through the vertical plate is arranged at the output end of the first motor, a fixing base is connected to one end of the rotating rod, and a plurality of first telescopic rods are connected to the outer side of the fixing base; a movable shaft of the first telescopic rod penetrates through the side wall of the fixing base and is connected with a first clamping plate, a second motor is connected to the base, a lead screw is arranged at the output end of the second motor, a sliding base is in threaded connection with the lead screw, a bearing piece is arranged above the sliding base, and a connecting base connected with the outer ring of the bearing piece is arranged on the sliding base. The inner ring of the bearing piece is connected with a plurality of second telescopic rods, and movable shafts of the second telescopic rods are connected with second clamping plates. According to the utility model, the stability of the camshaft in the rotary machining process is improved; and meanwhile, the cam shafts with different lengths can be clamped and fixed, and the applicability is high.

The invention belongs to the technical field of technical performance testing equipment of electronic control oil injectors in core high-value accessories of diesel generating sets for petroleum drilling production, and particularly relates to a dual-drive electronic control oil injector performance testing device and method and application. The device comprises a connecting base, a fuel supply and recovery mechanism connected to the lower portion of the connecting base, a fuel injector fixing support connected to the lower portion of the connecting base and arranged beside the fuel supply and recovery mechanism, a cam shaft box mechanism connected to the upper surface of the connecting base, and a lower push rod mechanism connected between the connecting base and the fuel injector fixing support. The direct current control mechanism and the manual driving mechanism are fixed on the upper surface of the connecting base and are connected with the cam shaft box mechanism. The method is complete in function, simple to operate, visual and accurate in detection result, high in goodness of fit, excellent in timeliness and low in cost. Compared with the prior art, the speed is increased by more than or equal to one time, and the effect that the detection result is visual and clear is achieved.

The utility model discloses an oil-gas separation mechanism and an engine, the oil-gas separation mechanism comprises an air inlet cam shaft, a chain wheel, a centrifugal separation disc and a breather pipe, and the air inlet cam shaft is provided with a first channel penetrating through the two ends of the air inlet cam shaft; the chain wheel is meshed with a timing chain of an engine and used for driving the air inlet cam shaft to rotate. The centrifugal separation disc is connected with one end of the air inlet cam shaft and provided with a separation cavity, the separation cavity communicates with the first channel, fan blades are arranged in the separation cavity, the centrifugal separation disc rotates to suck mixed oil gas into the separation cavity, and the fan blades guide gas into the first channel and throw engine oil out of the separation cavity. The breather pipe communicates with the end, away from the centrifugal separation disc, of the first channel and is used for exhausting gas in the first channel. According to the oil-gas separation mechanism, the oil-gas separation structure can be arranged on the air inlet cam shaft, the space occupied by the oil-gas separation structure in an engine is reduced, the internal structure of the engine is simplified, and the manufacturing difficulty and manufacturing cost of the engine are reduced.

The invention provides a control method and device for consistency of all cylinders of an engine and a vehicle. The method comprises the steps that the rotating speed and torque of the engine are obtained, and the rotating speed and torque of the engine are obtained; determining that the engine is in a low-speed and low-load working condition under the condition that the engine rotating speed is in a first preset range and the engine torque is in a second preset range; under the condition that the engine is in the low-speed and low-load working condition, the camshaft phase is controlled to be delayed relative to the crankshaft phase, so that opening of an intake valve of the engine is delayed, and the problem that in the prior art, the actual EGR rate consistency of all cylinders of the engine is poor is solved.

The invention discloses a camshaft sensor stability detection method and system, and relates to the technical field of intelligent sensors, and the method comprises the steps: carrying out the multi-source collection of a camshaft sensor, obtaining a multi-dimensional sensing data set, carrying out the conjoint analysis of the multi-dimensional sensing data set, and extracting a dynamic stability characteristic parameter set; constructing a sensor operation state matrix based on the dynamic stability characteristic parameter set in combination with an environment parameter set, and generating a sensor stability diagnosis result; and matching an optimization strategy library according to the sensor stability diagnosis result, and generating a stability detection report. The technical problems that in the complex operation environment of an engine, a traditional camshaft sensor stability detection means has defects and cannot meet the requirements of accurate evaluation and effective management and control are solved, the stability of the camshaft sensor is accurately detected in the complex operation environment of the engine, accurate data are comprehensively obtained, and the reliability of the camshaft sensor is improved. And the technical effects of accurate evaluation of the stability and effective control of the engine performance are achieved.

The utility model discloses a roller type capo which is convenient in position adjustment, stable and reliable, and comprises a folding arm assembly and a roller assembly, the folding arm assembly adopts a hidden camshaft folding arm and comprises a front clamping arm, a rear clamping arm, a front pressing arm, a rear pressing arm, a hinge shaft and a clamping spring, the top of the front pressing arm is rotationally connected to the top of the front clamping arm, the top of the rear pressing arm is rotationally connected to the middle of the rear clamping arm, the front clamping arm is sleeved with the front pressing arm when the front pressing arm is folded, and the rear pressing arm is embedded into the rear clamping arm when the rear pressing arm is folded; the rolling wheel assembly is of a three-rolling-wheel structure and comprises a front rolling wheel assembly and two rear rolling wheel assemblies, the front rolling wheel assembly and the two rear rolling wheel assemblies are all vertically installed, and the width of the portion, arranged side by side, of the two rear rolling wheel assemblies is larger than that of the rear clamping arm. Folding operation is convenient and reliable, and the whole tuning clamp is small in size and attractive and elegant in appearance after being folded; clamping is stable and reliable, the rear clamping arm can be prevented from shaking during sliding, smooth and reliable sliding is guaranteed, and tuning precision is guaranteed.

A hydrogen-diesel dual-fuel engine that includes an engine block, where the engine block includes a cylinder outfitted with at least two hydrogen fuel injectors and a piston. The engine further includes an air-handling system that includes an intake manifold, an intake pipe, an exhaust pipe, a variable geometry turbocharger, and an exhaust gas recirculation system configured to recirculate exhaust gases from the exhaust pipe to the intake manifold. The engine further includes a two-step camshaft, where the two-step camshaft is configured with the air-handling system for exhaust re-breathing and late intake valve closing, and a port fuel injector system that provides hydrogen gas to the at least two hydrogen fuel injectors. The engine further includes a diesel injector, a common-rail fuel injection system, a plurality of sensors, and a controller configured to receive engine data from the plurality of sensors and to control operation of the hydrogen-diesel dual-fuel engine.

A power tool may include a housing including first and second clamshell halves. The power tool may include a motor directly supported by the first and second clamshell halves. The power tool may include a gear assembly directly supported by the first and second clamshell halves and operably coupled to the motor. The power tool may include an impact mechanism disposed within the housing between the first and second clamshell halves and operably coupled to the gear assembly, the impact mechanism including a camshaft, an anvil rotationally supported by an anvil support for rotation about an axis, the anvil support being directly supported by the first and second clamshell halves, and a hammer configured to reciprocate along the camshaft and to impart rotational impacts to the anvil in response to rotation of the camshaft.

The invention discloses an automobile camshaft forging die and a forging method, and relates to the technical field of forging dies, the automobile camshaft forging die comprises an upper die base and a lower die base, the upper portion of the upper die base and the lower portion of the lower die base are connected with die plates used for being installed on a workbench of a machine tool, and the die plates are connected with the upper die base and the lower die base. Die cavities are formed in the opposite faces of the upper die base and the lower die base correspondingly, and a jacking mechanism used for jacking out forged and pressed finished products is arranged in the lower die base. The problems that in the prior art, in the forging manufacturing process through a forging die, after die casting is completed, due to the fact that the outer wall of a cam shaft is attached to the wall of a die cavity, the cam shaft is inconvenient to clamp through pliers, and then operation is inconvenient during material taking are solved. The cam shaft die-casting die has the advantages that the jacking mechanism is arranged in the lower die, so that after die-casting is completed, the jacking mechanism can automatically jack out the cam shaft, the cam shaft is separated from the die cavity, and workers can conveniently clamp the cam shaft.

The invention discloses an automatic feeding PEEK production system and a production process, and relates to the field of feeding control of PEEK production, the automatic feeding PEEK production system comprises an injection table and a conveying belt, a mold on the conveying belt is conveyed to an objective table through a push rod, a feeding turntable rotates to drive and switch the objective table for feeding, and a cam shaft is arranged to extrude and push the objective table to carry to cooperate with the injection table; a die supply system facilitating automatic feeding is arranged between an injection table and a conveying belt, a feeding rotary disc, a push rod and a cam shaft are synchronously driven by feeding of an injection table screw to be in periodic movable fit, and in one period, the injection table screw is fed by a certain distance; the feeding distance synchronously drives the push rod in proportion to complete telescopic movement of one cycle, materials on the conveying belt are pushed to the objective table, in addition, the feeding rotary disc rotates by a fixed angle, rotary switching of the objective table on the side face is completed, meanwhile, the cam shaft rotates by a circle, the objective table is extruded and pushed to carry towards the injection table, and mold matching of injection molding is completed.

The present invention provides a device and method for treating a water body, comprising a membrane biological reaction cylinder, on which a plurality of membrane biological reaction units are arranged in an annular array, and the plurality of membrane biological reaction units are connected with the inside of the membrane biological reaction cylinder through water inlet holes arranged at the connection of the membrane biological reaction cylinder, the purification cylinder body is formed by a pair of water inlet ducts and a pair of arc plates fixedly welded, the plurality of combing aeration rods are respectively connected with corresponding aeration cylinders through air channels arranged inside the arc plates, the ends of the telescopic rods away from the pistons are movably sleeved on the camshafts, and combing gaps are formed between the plurality of L-shaped connecting rods, the membrane biological reaction units of the present invention are in a rotating state, and cooperate with the direct aeration and combing of the combing aeration rods, thereby increasing the probability of combining biofilm fillers with oxygen, effectively preventing particulate matter from adhering to MBR hollow fiber filaments, and thus ensuring the purification efficiency of the membrane biological reaction unit.

The invention relates to a camshaft bearing cover, an engine, a vehicle and a manufacturing method of the camshaft bearing cover, and belongs to the technical field of automobiles. The cam shaft bearing cover comprises a cam shaft bearing lower cover and a cam shaft bearing upper cover, the cam shaft bearing lower cover is installed on a cylinder cover of an engine cylinder, the cam shaft bearing upper cover is installed on the cam shaft bearing lower cover, and two lower installation half grooves are formed in the first surface of the cam shaft bearing lower cover. The second surface of the camshaft bearing upper cover is provided with two upper mounting half grooves, the two lower mounting half grooves are respectively matched with one upper mounting half groove to form two bearing mounting holes, a bearing cover main oil passage is arranged between the first surface and the second surface, the bearing cover main oil passage is communicated with the bearing mounting holes, and the camshaft bearing lower cover is provided with a bearing cover oil inlet passage. And the bearing cover oil inlet channel is communicated with the bearing cover main oil channel and an oil outlet of the cylinder cover main oil channel of the cylinder cover. The manufacturing process of the camshaft bearing cover can be simplified.

The present invention relates to the technical field of machining lathes, and discloses a camshaft machining lathe and a camshaft machining process. Through the arrangement of a positioning component and a driving component, when a portion of a long shaft to be machined is turned into a camshaft, the portion of the long shaft to be cut into the camshaft is divided into several small sections by the positioning component, so that a feed mechanism controls a turning tool to turn these small sections in sequence, and the completed camshaft is turned out, thereby preventing the portion of the long shaft that is turned into the camshaft from being deformed during the machining process, thereby improving the accuracy of the camshaft. When it is necessary to move the positioning component, it is only necessary to release the clamping of the long shaft by the positioning clamp, and then the positioning component can be driven to move on the guide rail by the driving component. When passing through the feed mechanism, it is only necessary to turn the support plate outside the guide rail, and there is no need to remove the positioning component from the guide rail, thereby reducing the workload of workers and improving the production efficiency of the camshaft.

The utility model relates to the technical field of camshaft machining, in particular to a camshaft drilling device which comprises a shell, a machining cavity and a collecting cavity are formed in the shell through a transverse plate, a drilling machine is connected in the machining cavity in a sliding mode through a driving piece, the transverse plate is communicated with the collecting cavity through a grating plate, and the collecting cavity is communicated with the machining cavity through a driving piece. A pair of pneumatic clamping jaws is fixedly installed at the top of the transverse plate, a collecting assembly used for collecting scraps is arranged in the collecting cavity, the collecting box can collect the scraps generated during drilling, the side face of the collecting box is detachably connected with a filter plate through a clamping piece, the filter plate is detachably connected with the collecting box through a clamping piece, and therefore the collecting box can be used for collecting the scraps. The filter plate filters dust in air entering the collecting box, the risk that the dust is inhaled by workers is effectively reduced, the dust accumulated on the surface of the filter plate can be cleaned through the cleaning piece, the blocking condition is prevented, then the situation that the machining quality is affected by waste chips is avoided, and the machining efficiency is improved.

The invention relates to the technical field of camshaft cleaning, and discloses an ultrasonic cleaning device for camshafts, which comprises an ultrasonic cleaning machine and a plurality of cleaning tanks, each cleaning tank is internally provided with an inclined cleaning assembly, and each inclined cleaning assembly comprises a plurality of fixed sleeves and a plurality of spiral grooves; the fixing sleeve and the spiral groove are obliquely arranged, the camshaft is obliquely placed in the cleaning tank through the fixing sleeve, the problem of cleaning dead angles is effectively solved, the surface of the camshaft is prevented from being attached to the bottom of the cleaning tank through the oblique placement mode, energy generated by ultrasonic waves can evenly act on all parts of the camshaft, and the cleaning effect is improved. Meanwhile, due to the existence of the spiral grooves, the cleaning liquid cleans the two ends of the cam shaft in a spiral flowing mode, the flowing mode prevents the problem of cleaning dead angles caused by the fact that the two ends of the cam shaft are fixed to the maximum extent, and therefore the cleaning quality of the cam shaft is improved.

An electric motor (1) which is particularly suitable for use in a camshaft adjuster has a multi-part housing (2) which comprises a housing shell (3) made of a first material, in particular sheet steel, and a housing cover (4) made of a second material, in particular light metal, wherein a stator-rotor assembly (5) and an associated electronic module (10) including a printed circuit board (17) are accommodated in the space formed between the housing shell (3) and the housing cover (4), wherein the printed circuit board (17) is arranged three times, namely - firstly by formed material of the housing cover (4), - secondly by a motor contact (21) which is supported on the stator-rotor assembly (5), and - thirdly, by a pin (27) which is held in a plug module (20) which is inserted between the housing shell (3) and the housing cover (4), and is both mechanically fixed and electrically contacted.

The disclosure relates to a bicycle transmission comprising an axle, such as a wheel axle or a countershaft in a crank transmission, configured to be non-rotatably fixed to a frame of the bicycle; at least one sun gear rotatably mounted about the axle; at least one clutch mechanism for selectively preventing rotation of the at least one sun gear in at least one direction of rotation about the axle; and a camshaft mounted inside the axle to actuate the at least one clutch mechanism.

The invention provides a normalization processing method for a multi-mode crank angle signal of a diesel engine, which comprises the following steps of: receiving an original crank angle signal of the diesel engine, and identifying a signal mode type of the original crank angle signal; according to the identified signal mode type, selecting a corresponding characteristic tooth judgment logic: for a tooth increasing mode, when it is detected that the current tooth gap time is less than or equal to 5 / 8 + / -dynamic correction value of the previous tooth gap time, judging that the next tooth is a characteristic tooth; for the tooth missing mode, when it is detected that the current tooth gap time is larger than or equal to 3 / 2 + / -dynamic correction value of the previous tooth gap time, the next tooth is judged to be the characteristic tooth; generating a TRIG pulse signal based on the characteristic teeth, and complementing the CDMA pulse signal through camshaft phase information at the tooth missing / tooth increasing position; and performing pulse reconstruction on the non-characteristic teeth according to a preset angular domain resolution, and outputting a standardized TRIG pulse signal and a standardized CDMA pulse signal. According to the technical scheme, unified processing and high-precision output of different tooth type signals are achieved through dynamic threshold value judgment, camshaft phase compensation and pulse reconstruction technologies.

The application provides a no-dead-corner camshaft cleaning device, which comprises a rack, a brushing bin arranged on the rack, a plurality of groups of mounting units arranged on the rack and driven to move in a ring direction by a conveying mechanism, a mounting plate arranged on the conveying mechanism, a brush rod detachably connected to the mounting plate through a quick-release assembly, a movable plate arranged on the mounting plate and capable of sliding transversely, a camshaft body rotatably arranged in a supporting frame on the movable plate and sleeved on the brush rod, a driving mechanism arranged on the rack and connected to the movable plate, the driving mechanism converting the sliding of the movable plate when passing through the brushing bin into driving the camshaft body to rotate along its axis and reciprocatingly slide, and the quick-release assembly and the driving mechanism being connected through a linkage assembly to convert the movement of the driving mechanism into driving the brush rod to rotate. The device can avoid the existence of a cleaning dead angle and improve the cleaning effect on the camshaft body.

The utility model discloses a camshaft signal panel angle detection device based on a Hall effect sensor, which comprises the Hall effect sensor, a base and an L-shaped mounting plate, and is characterized in that the Hall effect sensor is mounted on a first strip-shaped hole in the vertical surface of the mounting plate; the Hall effect sensor can be adjusted up and down to ensure that the probe of the Hall effect sensor is as high as the center of the signal panel; and the mounting plate can be mounted on the base in a front-back adjustable manner through the second strip-shaped hole so as to ensure that the distance between the Hall effect sensor and a signal panel of the cam shaft is 1.5-2.5 mm. The cam shaft rotates near the Hall effect sensor probe, the convex teeth on the signal panel periodically change the magnetic field intensity of the Hall effect sensor, and according to the Hall effect principle, a signal panel graph and an output angle value are obtained to complete detection, manual detection is not needed, the accuracy rate is high, and the signal panel graph can be visually displayed.

The utility model discloses a heptagonal tool positioning structure for special alignment, and belongs to the technical field of engine alignment positioning tools. A heptagonal tool positioning structure is arranged on the camshaft body, the heptagonal tool positioning structure comprises a surface A, a surface B and a surface C, the surface A and the surface B are parallel to each other, the surface C is adjacent to the surface A and the surface B, and a two-dimensional code used for tracing the machining process is arranged on the surface C. According to the heptagonal tool positioning structure for special alignment, through the advantages of accurate positioning, reliable assembly, traceable quality, production optimization, product reliability, high adaptability and the like, the product quality, the production efficiency and the market competitiveness are effectively improved, and a powerful guarantee is provided for related production of camshafts.