44results about How to "Avoid secondary cutting" patented technology

The invention discloses a remoulding soft clay sample preparation device and a remoulding soft clay sample preparation method based on a vacuum combined electron-osmosis effect. Nonwoven geotextile, a gravel layer, a sand mat layer and an electron-osmosis cathode are sequentially paved on an osmosis drainage base; the upper and lower ends of a latex film are respectively turned outward and sleeved on a sample loading solidification cylinder and are fixed with the osmosis drainage base by a bolt through a flange; a water vapor separation cylinder is provided with an electric contact vacuum member and is connected with the osmosis drainage base and a vacuum pump respectively through an air pipe; slurry is poured into the designated height of the sample loading solidification cylinder, and an electro-osmosis anode is put in; and the electro-osmosis anode and the electro-osmosis cathode are respectively connected with a programmable direct-current power supply by wires. Under the combined effect of vacuum negative pressure and electro-osmosis, the drainage solidification speed of a soil body is increased, and the solidification stress level in a soil body sample preparation process can be adjusted. According to the device and the method disclosed by the invention, the size of a sample tank is reduced, and meanwhile, the number of sample preparation each time is increased by preparing multiple groups of soil samples; the device has a simple structure and is convenient for operation and sample taking; and the sample preparation period is short, and secondary cutting, disturbance and waste of soil samples are effectively avoided.

The invention discloses a skew line tooth surface gear transmission pair and a tooth width geometric design method. The skew line tooth surface gear transmission pair adopts an alternating axis transmission form composed of involute spur gears and skew line tooth surface gears. Each skew line tooth surface gear is formed by spreading straight tooth involute slotting cutters in a staggered mode; the skew line tooth surface gears can only mesh with the straight tooth cylindrical gears and can not mesh with the skewed tooth cylindrical gears with helix angle; and the tooth trace is approximate to a skew line and forms an oblique angle with the radius direction, thereby being very suitable for the demands of design diversification for aviation compact space. The method illuminates the gear shaping principle of the skew line gear and skew line tooth surface gear, and deduces the tooth surface equation of the skew line tooth surface gear. The margin line of the involute slotting cutters is utilized to calculate the position of the tangent point of the internal end tooth root. The condition that the outer end tooth top tooth thickness is equal to zero is utilized to obtain the sharpening condition. The condition of avoiding secondary cutting of the tooth root is combined with determine the cutter top fillet radius, thereby finally obtaining the tooth width of the skew line tooth surface gear.

The invention discloses a single-face clamping hole forming method of a double-side stepped hole part, and belongs to the technical field of hole processing. The single-face clamping hole forming method main comprises the following steps that S1, an upper counterbore, a stepped hole and a lower counterbore are subjected to rough milling; S2, the lower counterbore is subjected to milling; S3, the upper counterbore and the stepped hole are subjected to fine boring, a boring tool is mounted, the knifepoint direction of a tool bit of the boring tool is confirmed when SPOS of a machine tool is 0, the knifepoint direction is adopted as the forward direction of the X axis, then, the boring tool stretches along the Y axis into the upper counterbore and the stepped hole to perform boring, after boring, the machine tool stops, the tool bit of the boring tool still points the forward direction of the X axis, then, the boring tool retracts in the negative direction of the X axis, L1 equals to 0.1mm, and then, the boring tool retracts upwards along the Y axis; and S4, the lower counterbore is subjected to reverse boring. According to the single-face clamping hole forming method, the upper counterbore is bored to the required size in a set boring manner, the stepped hole is bored to the required size in a set boring manner, the lower counterbore is bored to the required size in a set boringand reverse boring manner, the clamping and datum transformation times is decreased, precision like surface roughness and coaxiality of to-be-processed holes is guaranteed, and hole processing efficiency is improved.

The invention relates to the technical field of agricultural machinery, in particular to a rotatable mower header and a differential feeding method. The mower header is mainly composed of a left cardan joint (29), a left gear box (1), a left material guiding cylinder (7), a left cutter disc (10), a gear box (12), a right cardan joint (30), a right gear box (21), a right material guiding cylinder (16) and a right cutter disc (13). Different revolving speeds of the cutter discs and the material guiding cylinders are achieved, and the revolving speed of the cutter discs is high so as to ensure the cutting speed, low revolving speeds of the material guiding cylinders and material drainage. With the differential feeding method, roots of mowed forage grass are arranged at the front and the following crops are conveyed backwards in order, layout of forage grass strips is in order, the following operation is convenient, and at the same time, the forge grass is prevented from tilting forwards and secondary cutting is avoided.

The invention relates to a cutting device, in particular to an angle-adjustable marble cutting device. Therefore, the angle-adjustable marble cutting device aims to achieve the technical effects of being capable of adjusting the cutting angle, firmly fixing marble and preventing the marble from shifting during cutting. According to the technical scheme, the angle-adjustable marble cutting device comprises a bottom plate, first supports, a second support, a conical plate and the like, the first supports are symmetrically arranged on the right side of the top of the bottom plate, and the secondsupport is arranged on the left side of the top of the bottom plate. The angles of a motor and a cutting blade can be adjusted by rotating a first hand rotating wheel, so that the cutting angle of themarble is adjusted, the angle can be adjusted when the marble is cut, the operation of adjusting the angle is simple, the adjusted angle is wide, the adjustment can be carried out according to the cutting requirement, subsequent secondary cutting by using a hand grinder is avoided, the working efficiency is improved, and the operation complexity is reduced.

The invention belongs to the technical field of wood machining equipment, and in particular, relates to a wood automatic transverse cutting machine. The machine comprises a frame, a loading module anda cutting module; the loading module comprises a pushing mechanism arranged on the frame, a side surface loading mechanism and a stop mechanism; the pushing mechanism comprises a loading channel formed in the frame, a pushing piece arranged on the loading channel, and a first driving mechanism matched and connected with the pushing piece; the side surface loading mechanism comprises a set of sidesurface loading plates and a set of elastic blocks; the stop mechanism comprises a discharge port, a pressing piece and a second driving mechanism; and the cutting module comprises a mounting base, atransverse moving driving motor, an electric wood saw and a lifting driving mechanism. Compared with the prior art, the machine is additionally provided with the lifting driving mechanism, so that the electric wood saw can automatically move down during returning to prevent secondary cutting of woods; and cut wood blocks are high in section flatness and cutting quality without needing the polishing treatment, so that higher enterprise benefit is achieved.

The invention discloses a mounting method, a dismounting method and a using method of a hollow cylinder sample. The hollow cylinder sample comprises an inner cylinder, a consolidation outer cylinder, a permeable top cover and a drainage chassis, wherein the inner cylinder comprises four inner cylinder assemblies which are arranged in an arc shape, fixing grooves and water permeable holes; the consolidation outer cylinder comprises two semi-circular consolidation outer cylinder assemblies, a fixing table, a fixing hole A, locking blocks, limiting grooves and limiting blocks; a through hole is formed in the center of the permeable top cover; the whole drainage chassis is in a disc shape and provided with water collecting holes. The installation and connection adopts a mortise and tenon buckling mode, so that a soil sample can be more accurately close to the required standard size; a vacuum bin with relatively high leakproofness is formed, so that water and gas can be conveniently discharged, and the water content can be more accurately controlled; and moreover, the disturbance degree on the soil sample during sample disassembly is effectively reduced, secondary cutting on the inner diameter and the outer diameter of the soil sample is avoided, and the possibility is provided for rapidly manufacturing the saturated hollow cylindrical sample with the inner diameter and the outer diameter of the international common standard at one time.

The invention provides a stitching device with a percussion locking unit; the stitching device comprises a stitching device body, and a pin ejector board and a release button arranged on the stitching device body; the release button is provided with a pin ejector board locking plate; the pin ejector board is provided with a pin ejector board boss; the far end of the pin ejector board locking plate abuts against the pin ejector board boss. In usage, a percussion handle is held to push the pin ejector board, thus driving a cutter to finish cutting; when the cutting is finished, the far end of the pin ejector board locking plate is joint with the pin ejector board boss, so the pin ejector board cannot return to the original state; even if the doctor re-hold the percussion handle, the pin ejector board cannot be pushed, thus preventing secondary percussion of the stitching device, preventing secondary cutting of the cutter, and avoiding medical accidents.

The invention discloses a sugarcane cutting machine capable of cutting sugarcanes uniformly. The sugarcane cutting machine capable of cutting the sugarcanes uniformly comprises a cutting barrel, a rotating shaft, a lead screw, a sliding rod, a slider, a clamping ring and a guide tube, wherein the rotating shaft is connected with a plurality of cutters; one end of the rotating shaft is connected with a first motor; a discharging opening is formed in the bottom of the cutting barrel; a feeding opening is formed in one side of the cutting barrel; the guide tube is connected with the discharging opening; a notch is formed in the top of the guide tube; the sliding rod is arranged above the guide tube; the lead screw is arranged above the sliding rod; the slider is provided with a first through hole and a second through hole; the lead screw penetrates in the first through hole; the sliding rod penetrates in the second through hole; the slider is provided with an ejector pin which is matched with an inductor; the clamping ring is arranged below the slider and is connected with the slider via a connecting plate; a fixing hole is formed in the clamping ring; two sides of the clamping ring run through the fixing hole; and a fixing rod penetrates in the fixing hole. The lead screw and the sliding rod are combined to drive the clamping ring so as to drive the sugarcanes to move forwards at constant speed, the labor intensity is reduced, and lengths of cut sugarcanes are the same.

The invention provides a slicing device for processing traditional Chinese medicine decoction pieces, and relates to the technical field of Chinese medicinal material processing equipment. The slicing device comprises a shell, a supporting plate, connecting pieces, a conical guide table, a material barrel, guide grooves, blanking seams, cutter mechanisms, a driving mechanism and a control panel. According to the slicing device, the thickness of decoction pieces can be kept uniform, and the sliced decoction pieces directly fall into a conical blanking bin; secondary cutting is avoided, and raw material medicines are output through the multiple guide grooves simultaneously while the slicing quality is guaranteed; and the multiple material guide grooves work in cooperation with the multiple cutter mechanisms, and the slicing efficiency is effectively improved.

The invention discloses production equipment for ceramic fiber granulated wool in the technical field of fiber wool production equipment. The production equipment comprises a box, a first supporting frame and a second supporting frame are fixedly installed on the upper and lower sides of an inner cavity of the box respectively, a first cutting motor and a second cutting motor are installed on thetwo sides of the top of the first supporting frame, a screening motor is installed in the middle of the bottom of the second supporting frame, a screening cylinder is rotationally connected between the first supporting frame and the second supporting frame, a first cutting frame and a second cutting frame are arranged on the two sides of the bottom of the first supporting frame, and a dischargingbarrel is arranged at the bottom of the box. Ceramic fiber wool is cut under the mutual effect of the first cutting frame and the second cutting frame, and screening is performed by the screening cylinder in the cutting process to separate out small residual balls and guarantee the forming quality of granulated wool; the distance between the first cutting frame and the second cutting frame can beadjusted, so the size of ceramic fiber grains can be changed for cutting, and the application range is wide.

The invention relates to the technical field of plant breeding, and provides a cutting device. The cutting device comprises a belt-shaped soft belt, a tool apron and a cutting knife, wherein a limiting device is arranged at one end of the belt-shaped soft belt and is used for fixing the belt-shaped soft belt to a tree trunk, the other end of the belt-shaped soft belt is used for being connected with the limiting device, and a tension sensor is arranged on the belt-shaped soft belt; the tool apron is arranged on the belt-shaped soft belt in a sliding manner; and the cutting knife is arranged on the tool apron. According to the cutting device, the problems that in the prior art, most larch trunks are irregular, some parts are not prone to being in contact with the cutting knife, and secondary cutting needs to be carried out are solved.

The invention discloses an ultra-precision thermoplastic composite material granulator. The ultra-precision thermoplastic composite material granulator comprises a rack and a granulating device arranged on the rack, the granulating device comprises a bottom plate, a housing, a rotary knife roll, an upper press roll and a lower press roll, the bottom plate is fixed on the rack, the housing is arranged on the bottom plate, and the rotary knife roll, the upper press roll and the lower press roll are all arranged in the housing. The upper press roller and the lower press roller are both located on one side of the rotary knife roller and are distributed up and down, a knife holder is further arranged between the rotary knife roller and the lower press roller, a fixed knife is arranged on the knife holder and is of a cuboid structure, and two faces of the fixed knife are concave towards the center. A gap between one concave face of the fixed knife and the outer wall of the rotary knife roller is a discharging gap, a discharging barrel is further arranged at the bottom of the bottom plate, and the discharging barrel extends out of the rack.

The invention discloses a waste recovery device for steel pipe cutting-off machining. The waste recovery device comprises an operation table, the lower end of an air cylinder is fixed to the upper surface of the operation table, the upper end of the air cylinder is fixed to the lower surface of a top cover, a fixing table is fixed to the lower surface of the top cover, a first motor is fixed to the upper surface of the fixing table, the top end of the first motor is in shaft connection with a cutting knife, the cutting knife is in shaft connection into the fixing table, a clamping device is fixed to the upper surface of the operation table, a fixing device is in threaded connection into the clamping device, a placing plate is fixed in the operation table, and the lower surface of the placing plate is in shaft connection with a second motor. According to the waste recovery device for steel pipe cutting-off machining, generated waste can be swept after a steel pipe is cut, the swept waste can fall into a collector through a falling hole, and therefore the waste in the collector can be directly dumped, and the waste generated after the steel pipe is cut can be recovered.

The invention discloses a novel blanking die waste cut-off tool structure. The novel blanking die waste cut-off tool structure comprises a waste upper die tool block, a waste lower die tool block anda blanking tool block, wherein the waste upper die tool block is provided with a length-direction cutting edge and a width-direction cutting edge; the length-direction cutting edge is matched with a cutting edge of the waste lower die tool block; the blanking tool block is arranged on the side edge of the waste lower die tool block; a cutting edge of the blanking tool block is matched with the width-direction cutting edge on the waste upper die tool block; a pointed cone-shaped cutting edge protruding downwards is arranged at the intersection of the length-direction cutting edge and the width-direction cutting edge of the waste upper die tool block; and a space for the pointed cone-shaped cutting edge to descend is arranged between the waste lower die tool block and the blanking tool block. By the adoption of the novel blanking die waste cut-off tool structure, scrap iron can be avoided, the die repairing frequency is reduced, the production efficiency is improved, and the quality of ablanking piece product is improved.