240 results about "Oblique cutting" patented technology

The invention relates to the technical field of tool control, in particular to a tooth cutting tool parameter control system based on bevel angle cutting, which comprises a tool parameter acquisition module used for acquiring the rotating speed, the axial feeding amount and the cutting depth of a tool in real time; the force-heat prediction model is used for outputting predicted cutting force and predicted cutting tool temperature; the multi-target parameter optimization model is used for receiving constraint conditions set by a user, optimizing the rotating speed, the axial feeding amount and the cutting depth of the cutter by taking the lowest cutting force, the lowest temperature of the cutting cutter and the highest machining efficiency as targets in the constraint conditions, and integrating and outputting a regulation and control strategy; and the cutter parameter control module is used for regulating and controlling the rotating speed, the axial feeding amount and the cutting depth of the cutter based on a regulation and control strategy when the predicted cutting force and the predicted temperature of the cutting cutter exceed threshold values. According to the method, by accurately regulating and controlling the parameters of the tooth cutting tool, the machining efficiency of the tooth cutting tool can be ensured, and meanwhile the abrasion speed of the tooth cutting tool is reduced.

The invention discloses a multi-cutting-device collaborative coal cutting non-beveling feed system which comprises a machine nest cutting device and a scraper conveyor, the machine nest cutting device comprises a traction part, a rotating arm and a cutting roller, the cutting roller is arranged at the first end of the rotating arm, and the scraper conveyor is arranged at the second end of the rotating arm. The second end of the rotating arm is pivotally connected with the traction part, the rotating arm is used for driving the cutting roller to move relative to the coal seam, the extending direction of the scraper conveyor is perpendicular to the advancing direction of the working face, the two ends of the scraper conveyor are each provided with a machine nest cutting device, and the traction part of each machine nest cutting device moves along the scraper conveyor; the drum shearer is arranged in the middle of the scraper conveyor and used for cutting a coal seam, and the hydraulic support is arranged on the side, away from the working face, of the scraper conveyor and used for supporting a top plate. The multi-cutting-device collaborative coal cutting non-beveling feed system provided by the invention has the advantages of high cutting efficiency and small influence on the original process.

The invention discloses a compression test clamping tool, system and method for a variable-thickness beveled laminated plate composite material, and relates to the technical field of aviation composite material mechanical property testing. The first long chuck and the second long chuck are respectively mounted on a variable-thickness side and an equal-thickness side of the beveled laminated plate sample, and the first long chuck mounted on the variable-thickness side is gradually thickened on a conical beveled layer and a thin section of the beveled laminated plate sample. According to the invention, the additional bending moment caused by eccentricity of a neutral shaft is effectively inhibited through the gradually-changed thickening design of the variable-thickness side long chuck in cooperation with gap control, and active inhibition of buckling instability of a beveling area is realized in combination with rigid fixation and surface roughening treatment of the short chuck; the method has the advantages that buckling instability is restrained, a failure area is accurately positioned, and samples of different configurations are adapted.

A mixed feed efficient mining method includes the steps that firstly, an air way, a machine way and a cutting hole are formed, a coal pillar is reserved at the left end of a working face, the length of the reserved coal pillar is larger than that of a single-drum coal mining machine, a machine nest is formed in the right side of the reserved coal pillar, and the length of the machine nest is not smaller than the sum of the length of a double-drum coal mining machine and the length of beveling feed; the single-drum coal mining machines are arranged in the roadways at the two ends of the fully mechanized coal mining face, the double-drum coal mining machines are arranged on the scraper conveyor at the machine nest section, when the double-drum coal mining machines run to be close to the left end or the right end of the fully mechanized coal mining face, reverse beveling feeding is directly carried out for next coal cutting, and it is not needed that coal is cut back and forth after conventional beveling feeding is carried out; coal pillars left at the two ends of the working face are cut by the two-end single-drum coal mining machine through vertical feeding, coal mining at the two ends and the middle section of the working face is achieved at the same time, the mining efficiency is greatly improved, the number of arranged working faces is reduced, the labor time of workers is shortened, and the economic benefits of enterprises are increased.

A three-coal-mining-machine efficient mining method includes the steps that firstly, an air way, a machine way and a cut hole are formed, notches are formed in the two ends of the cut hole in advance, and the length of the notches is not smaller than the sum of the length of a single-drum coal mining machine and the length of a double-drum coal mining machine; the front portions of the two ends of the working face are beveled, fed and pre-cut to form machine nests through the two single-drum coal mining machines, a roof is supported through the lagging supporting support and the timely supporting support, and the requirement for the width of a roadway can be lowered by adopting the beveled feeding mode of the single-drum coal mining machines; in addition, the single-drum coal mining machines on the two sides perform pre-cutting operation at the two ends of the working face and the double-drum coal mining machine perform coal cutting operation in the middle of the working face synchronously, and after the double-drum coal mining machine enters a left-end or right-end machine nest, the double-drum coal mining machine directly performs reverse beveling feeding for next coal cutting, so that the mining efficiency of the working face is improved; the working face arrangement number is reduced, the labor time of workers is shortened, and the economic benefits of enterprises are increased.

The utility model discloses a self-lubricating knuckle bearing which comprises an inner ring and an outer ring, the inner ring and the outer ring rotate and swing at any angle by taking a spherical surface as a contact surface, sealing rings are connected to two sides, close to the edge, of the outer ring, one end of each sealing ring is embedded in the inner side wall of the outer ring, and the opposite end of each sealing ring is an oblique cutting end part; the beveled end part is gradually narrowed from top to bottom until a sharp end surface is formed, and the beveled end part is inclined outwards; the sealing ring is located between the inner ring and the outer ring, and the inclined cutting-shaped end part abuts against the outer side wall of the inner ring, so that the sealing ring with the design is more reasonable in structure, can have better sealing performance even in a severe environment, and effectively prevents foreign pollutants from entering the space between the inner ring and the outer ring of the knuckle bearing, thereby ensuring the lubricating performance.

The invention discloses straight fluted tap tapping based on an oblique angle cutting model, and relates to a straight fluted tap mechanical modeling and torque prediction method. The method aims at solving the problems that in the tapping process of the straight fluted tap, the cutting torque time is too long, and the precision of a calculation result is low. The method comprises the following steps: step 1, establishing a straight fluted tap tapping bevel angle cutting model; 2, establishing a straight fluted tap cutting edge mechanical model; 3, establishing a workpiece geometric model; 4, calculating a unit mechanical model according to the step 2 and the step 3; 5, performing overall mechanical model calculation according to the tool and workpiece contact mechanical model; and 6, finite element simulation of the tool and workpiece contact model is carried out. Through comparison of a simulation result and a calculation result, the accuracy of the method is verified. Through comparison with simulation time of a single linear model, high efficiency of the torque prediction method based on the bevel angle cutting model is verified. The method is applied to the field of tapping manufacturing.

The invention relates to the technical field of hardware mold machining, in particular to a precision hardware mold beveling device which solves the problem that when a hardware mold is subjected to beveling machining traditionally, the metal scrap recycling effect is poor, the precision hardware mold beveling device comprises a machining table, and a recycling groove with an opening in the top is formed in the machining table; a plurality of supporting rollers are arranged above the recovery tank at intervals, a cavity is formed in each supporting roller, each cavity is communicated with the pump body through a connecting pipe, a plurality of vent holes are formed in the upper surface of each supporting roller, each supporting roller is sleeved with a rotatable sleeve part, and the sleeve parts are breathable, have the buffering capacity and are used for buffering impact force of chippings and filtering the chippings; when the pump body works to form negative pressure in the cavity, gas flows into the cavity in the supporting roller through the vent holes, and chippings are adsorbed to the upper surface of the suite in a negative pressure mode. When the suite is cleaned, the suite is rotated, the metal chippings adsorbed on the upper surface of the suite fall into the recovery tank after rotating to the lower portion and losing adsorption force, and the supporting roller has magnetism.

The utility model relates to the technical field of high-speed rail cabin machining, and discloses high-speed rail equipment cabin machining and cutting equipment, a locking handle part meshed with a locking fluted disc is arranged at the front end of a rack of a rotating table, and side clamping and positioning parts horizontally opposite to a cutting platform are symmetrically arranged on the two sides of a rack of a supporting table. A cutting component is arranged in the middle of a support of the rear supporting table. According to the utility model, a to-be-cut part is fixed on the cutting platform in a butt-clamping manner by utilizing butt-clamping positioning of the side-clamping positioning part, then the cutting part is pressed downwards to cut and perform cutting work, and in the cutting process, by utilizing locking opening and closing of the locking handle part and the locking fluted disc, the to-be-cut part is fixed on the cutting platform in a butt-clamping manner; according to the cutting device, the cutting platform and the cutting direction of the cutting component can be subjected to rotary correction adjustment in the horizontal direction, and the cutting surface of the cutting component can be subjected to cutting adaptation work in the oblique direction, so that the cutting device can adapt to the cutting procedure of a straight surface and can also adapt to the cutting work of inclined surfaces with different angles.

Provided is a high-frequency electrode needle having a temperature measurement function, which can improve a temperature measurement accuracy at a needle tip while avoiding a decrease in function. A temperature measurement contact C1 (temperature measurement portion) of a thermocouple (14) is disposed while being positioned at a front side of a rear end portion P2 of an inclined cutting edge surface P and a rear side of the inclined cutting edge surface P in a lumen (for example, internal space of a needle tube (11)) of the needle tube (11). That is, a temperature measurement contact C1 is disposed at a position where a cross-section perpendicular to an axial direction of the needle tube (11) partially surrounds the internal space.

The present invention discloses a device and a production method for producing a fixed-length and obliquely cut silent sponge tire. The device drives a cutting part below a first carrier platform to move horizontally above a cutting adjustment conveying mechanism through a first telescopic structure, and the cutting knife passes through an opening cutting groove to cut the silent sponge; through two deflections of the cutting part below the second carrier platform and the cutting knife below the third carrier platform, they respectively correspond to different obliquely arranged opening cutting grooves formed on the upper plate to achieve cutting at different oblique angles; a position limiting of the silent sponge during cutting is carried out through a needle punching cylinder structure. The present invention can ensure the high efficiency of cutting and fixed-length cutting; it can realize different types of automatic oblique cutting, vertical cutting, and fixed-length cutting to solve the problem that the existing silent cotton cutting structure only supports vertical cutting and has low cutting efficiency; it has the advantages of high cutting stability, being able to continuously cut, and avoiding the offset and displacement of the sponge during the cutting process.

The present application discloses a welding jig and welding equipment, and relates to the technical field of welding equipment. The welding jig includes a fixing component, a clamping component and an adjusting component. The fixing component has a receiving groove; the clamping component is arranged in the receiving groove, and the clamping component includes a first clamping member and a second clamping member, and the first clamping member and the second clamping member are used to clamp the first flat copper wire and the second flat copper wire together, and align the beveled surfaces of the first flat copper wire and the second flat copper wire; the adjusting component is respectively arranged on one side of the first clamping member and the second clamping member, and the adjusting component is used to adjust the relative position of the first clamping member and the second clamping member, and the fixing component includes a clamping screw, and one end of the clamping screw close to the second clamping member abuts against the second clamping member, and the clamping screw is used to push the second clamping member and the first clamping member to clamp the first flat copper wire and the second flat copper wire together. The present application can improve the efficiency of aligning the beveled surfaces between the flat copper wires, and improve its welding efficiency and welding quality.

The invention relates to the technical field of coal mining, in particular to a feeding process of a vertical drum coal mining machine. The technical defects of reciprocating operation, complex track and redundant process of the coal mining machine in a beveling feed process are mainly solved. The process comprises the following steps: pushing a conveyor in front of a coal mining machine to form an S bend; executing vertical feed in the head / tail area of the conveyor; the coal mining machine enters the S-bend stage to adjust the track of the roller to cut straight the coal wall; the end bracket is pushed to be straight by a conveyor; the coal mining machine linearly runs and synchronously follows the machine to pull the frame; adjusting the cutting depth of the front roller in an area exceeding the length of the coal mining machine from the coal wall; and after linearly cutting through the end coal wall, reversely entering a new cycle. Vertical feeding replaces oblique cutting, the procedures of triangular coal cutting and reverse coal sweeping are omitted, and one-way linear continuous cutting of the coal mining machine is achieved. The method has the remarkable advantages that the equipment moving track is simplified, the complexity of a control system is reduced, the cycle operation time is shortened, and basic process support is provided for efficient mining.

This invention relates to the field of cutting machine technology, and discloses an anti-rolling positioning process and equipment for cutting lithium battery electrode sheets, comprising: a machine body; an electrode sheet; a conveying mechanism, which is disposed on the machine body and is used to continuously convey the electrode sheet along a preset path to the cutting position; and a cutting mechanism, which is disposed on the machine body and is equipped with a top oblique cutting blade and a bottom oblique cutting blade, for performing oblique shearing on both sides of the electrode sheet conveyed to the cutting position. This anti-rolling positioning process and equipment for cutting lithium battery electrode sheets utilizes a stabilizing mechanism to continuously grind and adjust the oblique cutting edges of the top and bottom oblique cutting blades during continuous operation, maintaining the sharpness of the blade edges and ensuring a neat cut surface of the electrode sheet, reducing edge curling or burrs, while avoiding frequent machine stops for manual sharpening, thus improving the continuous production capacity and cutting stability of the equipment.

The invention relates to three-machine combined mining equipment and process, the equipment comprises a conveyor, and a main mining coal mining machine, a left notched coal mining machine and a right notched coal mining machine which take the conveyor as a moving track, and the left notched coal mining machine and the right notched coal mining machine are respectively arranged at the left end part and the right end part of the conveyor; the main mining coal mining machine is arranged between the two notching coal mining machines, the main mining coal mining machine is a double-rocker-arm coal mining machine, the left notching coal mining machine and the right notching coal mining machine are single-rocker-arm coal mining machines only provided with left rocker arms and single-rocker-arm coal mining machines only provided with right rocker arms respectively, and rocker arms of the notching coal mining machines are sliding rocker arms; during mining, the two notching coal mining machines are respectively responsible for cutting left and right end notches in advance, the main mining coal mining machine reciprocates between the two end notches to efficiently mine the middle coal wall at a high speed, the inclined cutting feed process is completely omitted, the end notch mining and the middle coal wall mining can be simultaneously carried out, and the overall mining efficiency is obviously improved.

The utility model relates to the technical field of engines, and discloses an oblique notch connecting rod which comprises a connecting rod body with a first combination face, a connecting rod cover with a second combination face and a connecting rod bolt, the connecting rod bolt is used for connecting the connecting rod cover and the connecting rod body so that the first combination face can be attached to the second combination face, and the first combination face is a curved face. And the second combination surface is a curved surface matched with the first combination surface. The connecting rod cover is limited in all directions on the combination surfaces through the cooperation of the first combination surface and the second combination surface, the situation that the connecting rod cover moves relative to the connecting rod body on the combination surface is avoided, and therefore the shearing force borne by a connecting rod bolt is shared through the cooperation of the connecting rod cover and the connecting rod body, and the service life of the oblique notch connecting rod is prolonged; the situation that a locating pin needs to be additionally arranged for locating the connecting rod cover, and therefore the situation of over-locating is avoided, meanwhile, the requirement for machining precision of the connecting rod bolt and the bolt hole is lowered, and the yield of the oblique notch connecting rod is improved.

A cutting knife which is designed as the upper knife of a guillotine knife, three-way knife or trimmer knife for cutting paper, cardboard, cartons and / or plastic films. The cutting knife has a knife holder with a detachably fastened knife blade and is movably mounted for carrying out a shear cut, parallel cut, parallel oblique cut, vertical swing cut or oblique swing cut. The knife blade is held on the knife holder in a force-fitting and form-fitting manner. The knife blade has a cutting edge region and a clamping region and is mounted in the clamping region between two clamping bodies of the knife holder. Corresponding form-fitting elements are formed on the knife blade and on the knife holder, which engage when the cutting knife is in the assembled state.

The utility model discloses a visual intervertebral drill bit which is mainly composed of a hollow drill rod and a drill bit body installed at the end of the hollow drill rod, and an endoscope is arranged in the drill bit body. One end, far away from the drill rod, of the drill bit is sequentially provided with a circular truncated cone and a cylinder, the large end of the circular truncated cone is connected with the cylinder, the small end of the circular truncated cone is provided with a positioning ring, and an inner ring (provided with a plurality of positioning teeth) and an outer ring (provided with a plurality of inverted-V-shaped end cutting edges) are arranged below the positioning ring. In addition, a spiral cutting edge and an inclined cutting edge are sequentially arranged on the periphery of the circular truncated cone from the small end to the large end, and grinding protrusions are evenly arranged on the outer surface of the cylinder and arranged on the convex strips at equal intervals in a staggered mode. The utility model further provides a drilling tool, the drilling tool is provided with the visual intervertebral drill bit and further comprises a handle matched with the drill rod in an inserted mode, the handle is of a hemispherical cage-shaped structure, a plurality of round holes and pits are formed in the outer surface of the handle, and a channel communicated with an inner cavity of the drill rod is arranged in the handle.

This invention relates to the field of blade crown structure technology and discloses a method for designing the oblique cut angle of crowned blades. By defining the direction and magnitude of the oblique cut angle of the crowned blade and defining evaluation parameters for the rationality of the static design of the crowned blade, simulation models of crowned blades with different sizes and directions of oblique cut angles on the crown contact surface are constructed. Static analysis is performed on the simulation models, and the oblique cut angle and magnitude of the contact surface are determined based on the static evaluation parameters. This invention solves the problems of excessive static stress in the blade due to pre-twist during assembly of crowned blades and crown misalignment due to rubbing. In particular, it addresses the following issues: for short blades with crowns and small aspect ratios and large torsional stiffness, even a small pre-twist angle design can still result in excessive stress. Reducing the pre-twist angle makes it difficult to ensure that the pre-twist angle tolerance meets requirements during processing and assembly. Using traditional improvement methods requires significant modifications to the blade, limiting engineering applications and affecting other blade performance.

The utility model discloses a circular saw beveling angle adjusting mechanism, and particularly relates to the technical field of angle adjustment, the circular saw beveling angle adjusting mechanism mainly comprises a concave sleeve plate, a rotating shaft and an angle rotating block, the rotating shaft is rotatably connected in the concave sleeve plate, the angle rotating block is fixed at one end part of the rotating shaft, and an extension angle adjusting mechanism is arranged on the upper surface of the angle rotating block; the extension angle adjusting mechanism comprises a sleeve plate fixedly arranged on the upper surface of the angle rotating block, one side of the inner wall of the sleeve plate is fixedly connected with a sleeving block, the inner wall of the sleeving block is slidably connected with a supporting rod, and the supporting rod is fixedly connected with the angle rotating block. The extension angle adjusting mechanism is adopted, a rotating motor drives a rotating shaft to rotate, meanwhile, the rotating shaft drives an angle rotating block to enable a supporting rod to rotate, an electric cylinder is started to push a sleeve plate to move upwards, the sleeve plate drives a sleeving block to move upwards, the sleeve plate can drive a sliding rod to enable an arc-shaped groove plate to slide upwards in a guiding mode, and the circular saw can be subjected to extension adjustment at different angles and different positions; and the adjustment is more convenient.

The present application relates to a kind of pressure measuring anti-pulling pipe sealing joint and its anti-pulling sealing method, it includes main joint, secondary joint, and the pipe clamp sealing assembly in the inner cavity formed by main joint and secondary joint, pipe clamp sealing assembly includes first sliding sleeve, second sliding sleeve, variable-diameter clamp cover, first sliding sleeve, second sliding sleeve, variable-diameter clamp cover three are mutually abutted when main joint and secondary joint are screwed and connected, first sliding sleeve forms preliminary sealing with pipe by annular sealing ring, variable-diameter clamp cover forms preliminary clamping to pipe;When gas-liquid is introduced into main joint, axial thrust in the direction of pipe pulling off is formed to pipe by gas-liquid pressure, and first sliding sleeve, second sliding sleeve, variable-diameter clamp cover three are further mutually abutted by gas-liquid pressure, corresponding annular sealing ring is further deformed, variable-diameter clamp cover is further shrunk and clamped, and the blade of variable-diameter clamp cover cooperates with the axial thrust of pipe and forms oblique cutting, realizes effective anti-backout anti-pulling structure, and with the increase of the pressure in pipe, the sealing property and anti-backout anti-pulling performance of pipe are self-adaptively improved.

The invention provides a cutting machine for electric wire group production and a cutting method thereof, and particularly relates to the technical field of electric wire cutting, the cutting machine comprises a cutting machine main body and a linkage positioning mechanism, the linkage positioning mechanism is arranged between two limiting polish rods, vertically corresponds to a tool apron and a cutter, and is composed of a linkage power assembly and a positioning assembly; the positioning plates are arranged on the two sides of the cutting part of the cutter, and are driven to be oppositely clamped through the vertically-symmetrical concentric-square-shaped frame plates, so that cutting point close-distance wrapping type positioning is formed, radial deviation, especially multi-core high-quality copper wires, during copper wire cutting can be reduced to the maximum extent, copper wire scattering caused by non-uniform single-side clamping force can be avoided, and the cutting quality of the copper wires is improved. And the cutting impact force of the cutting knife can be counteracted through the vertically symmetrical clamping force, so that the end face of the copper wire is prevented from beveling due to stress deformation, the smoothness of the cut end face of the copper wire is remarkably improved, and the requirement that the end face of a copper core is tightly attached to the terminal during subsequent terminal crimping is met.

The invention discloses a cutting device for refractory material processing, and relates to the technical field of building block manufacturing, and the cutting device comprises an adjustable cutting assembly. According to the cutting device for refractory material machining, the cutting head only makes contact with materials in the advancing process and is automatically lifted and separated in the return stroke, scraping damage to a notch in the returning process can be eliminated, the ineffective stroke can be effectively shortened, the service life of a cutter can be effectively prolonged, and when a user needs to adjust the cutting angle to achieve oblique cutting, the cutting head can be automatically lifted and separated. The movable plate can be driven to adjust the cutting angle within the arc range of the angle adjusting plate only by pulling out the plug pin, driving the movable plate to rotate with the trunnion as the axis and re-inserting the plug pin into the partition gap of the corresponding angle, so that the cutting angle can be adjusted within a certain range, and the cutting efficiency is improved. Angle deviation of the movable plate is achieved through simple and convenient operation, switching between vertical cutting and oblique cutting is achieved, and the machining requirements of different notch angles of refractory materials are met.

The present application relates to a cable cutting device, including a table, a cable trough and a cutting mold. A cable trough is installed on the top of the table, a slide rail is installed on one side of the cable trough, a main frame is fixedly installed on one side of the top of the table, a cutting mold is fixedly installed on the bottom of the main frame, a bevel cutting component is arranged at the bottom of the cutting mold, a limiting hole is provided on one side of the cutting mold, a side frame is fixedly installed on one side of the main frame of the cutting mold, and a vertical cutting component is arranged on one side of the side frame. When the utility model is used, the vertical cutting component or the bevel cutting component can be selected to be activated according to the cutting requirements. When the vertical cutting component is started, the cable can be vertically cut, and when the bevel cutting component is started, the cable can be beveled. Two cutting methods are used for vertical and bevel cutting respectively, so that the cutting methods are more diverse and can adapt to more types of cable cutting requirements. In addition, the bevel cutting method has stronger cutting ability and can be used for cables with higher strength.

Reaming tool for reaming very precise bores, especially in gray and ductile iron, comprising a clamping element adapted for clamping in the clamping devices of machine tools, and a cutting element according to the invention, on the circumferential part of which at least two cylindrical longitudinal support surfaces with an angular distance of 60° to 160° are formed, and on the remaining circumference of the cutting element at least three cutting teeth with longitudinal cutting edges and face cutting edges are formed, wherein a cylindrical longitudinal support surface is formed behind the first cutting tooth in the working direction of rotation and the other cylindrical longitudinal support surface is formed in front of the last cutting tooth in the working direction of rotation, characterized in that at the first cutting tooth (4) the distance (L1) of the intersection point (P1), i.e. the longitudinal cutting edge (9) and the inclined cutting edge (10), from the face plane (π) is smallest and at the last cutting tooth (4'') the distance (L1'') of the intersection point (P1'')that is, the longitudinal cutting edge (9'') and the inclined cutting edge (10'') are greatest from the face plane (π), and at least one cutting tooth (4') is formed between the cutting teeth (4) and (4'') with a distance (L1') of the intersection point (P1'), i.e., the longitudinal cutting edge (9') and the inclined cutting edge (10'), from the face plane (π), wherein, for individual cutting teeth (4') and (4), the distances (L1') and (L1) of the intersection points (P1') and (P1) from the face plane (π) decrease from the distance (L1'') in the working direction of rotation, and the distances (L2) and (L2') between the face plane (π) and the intersection points (P2) and (P2'), i.e., the cylindrical longitudinal support surfaces (6) and (6') and the lead-in surfaces (5) and (5'), decrease by at least 0.2 mm as the distance (L1'') between the frontal plane (π) and the intersection point (P1'') are larger.

1. A method for evaluating a region of a sample containing a plurality of holes, the method comprising: taking a first image of the region by scanning the region with a first charged particle beam; evaluating the first image to determine a first center-to-center distance between a first hole and a second hole of the plurality of holes; milling an angled cut in an area of ​​the region including the second hole at an angle such that a top surface of the sample in the milled area where the second hole is located is recessed with respect to a top surface of the sample where the first hole is located; thereafter taking a second image of the region by scanning the region with the first charged particle beam; evaluating the second image to determine a second center-to-center distance between the first hole and a second hole of the plurality of holes; and comparing the second center-to-center distance to the first center-to-center distance.

The utility model discloses an automobile part positioning stamping die, which relates to the field of stamping equipment and comprises a mounting table, and the mounting table is provided with a transverse clamping mechanism, a longitudinal clamping mechanism, a transverse jacking assembly and a stamping assembly. Wherein the longitudinal clamping mechanism comprises a third sliding block, a jacking plate and a positioning rod, the jacking plate is fixedly arranged on the mounting table, and the third sliding block is longitudinally and movably arranged on the mounting table towards the jacking plate. The third sliding block is fixedly provided with a positioning rod, the positioning rod is fixedly provided with a plug pin and a step face, and the plug pin is provided with a stamping groove. The jacking plate and the step face abut against the two ends of the first semi-finished product respectively, and meanwhile the plug pin is inserted into the oblique notch of the first semi-finished product. The transverse jacking assembly comprises a fourth sliding block, the fourth sliding block is transversely and movably arranged on the mounting table, the fourth sliding block is provided with a first jacking face, and the first jacking face jacks the surface of the first semi-finished product and the surface of the positioning rod at the same time. The stamping assembly comprises a fifth sliding block and a stamping head, the fifth sliding block is longitudinally and movably arranged on the mounting table, the stamping head is fixedly arranged on the fifth sliding block, and a stamping protrusion is arranged on the stamping head.

The invention relates to the technical field of coal mining machine cutting track control scheme design, in particular to a coal mining machine cutting track control system. Comprising a sensor group, a control unit and an execution mechanism. The sensor group collects position and posture information of the cutting roller in real time; the control unit processes sensor data and outputs a control signal; the executing mechanism comprises a height adjusting oil cylinder, a deflection oil cylinder and a roller telescopic oil cylinder which are used for cooperatively adjusting and controlling the movement track of the roller. According to the system, a traditional inclined cutting feed process is replaced with vertical feed, automatic cutting control is achieved, and production efficiency and safety are improved. The method has the key advantages that manual operation dependence is eliminated, and time waste is reduced; closed-loop control ensures track precision; the memory function supports path reproduction; the mining height and the dinting amount are optimized through cooperation of multiple mechanisms. The method is suitable for the field of coal mining, and operation continuity and equipment reliability can be remarkably improved.

The present invention belongs to the technical field of traditional Chinese medicine slicing, and relates to an adjustable medicine cutting machine for fine processing of traditional Chinese medicine, which includes a machine frame, side plates, an electric belt transmission group, a cutting mechanism and a pressing mechanism. There are two machine frames, and side plates are connected to the tops of both machine frames. An electric belt transmission group is installed between the lower parts of the two side plates. A cutting mechanism for cutting medicinal materials and a pressing mechanism for pressing medicinal materials are provided on the side plates. In the process of slicing medicinal materials, the present invention can slice the medicinal materials from the vertical direction through a cutting knife. When the slicing angle needs to be adjusted, the angle of the cutting knife can also be adjusted by rotating the guiding track, so that the cutting knife can slice the medicinal materials obliquely, thus enabling the effects of vertical cutting and oblique cutting to be achieved simultaneously.

The utility model discloses an oblique cutting machine base body capable of rapidly positioning a rotating angle, which comprises a base, a leaning grid arranged above the base, a rotating disc arranged in the middle position above the base in a rotating way, a connecting part arranged on the circumference of the rotating disc, a handle connected to the connecting part, and a positioning piece hinged below the connecting part, springs are further connected between the positioning pieces and the connecting part, and a plurality of positioning grooves corresponding to the positioning pieces are formed in the edge of the base. According to the utility model, the positioning piece is matched with the positioning groove to limit the turntable and the base, and the positioning piece can be automatically clamped into the positioning groove through the arrangement of the spring, so that quick positioning is realized; the positioning groove is of a trapezoid structure, the clamping block is of a trapezoid structure matched with the positioning groove, the trapezoid structure is adopted for matching, the clamping block is clamped into the positioning groove more tightly, the situation that the clamping block shakes left and right in the cutting process is avoided, and the accuracy of the cutting angle is guaranteed.