222 results about "Back cutting" patented technology

The invention relates to an eel and loach slaughtering machine which belongs to the field of an aquatic product processing machine. The eel and loach slaughtering machine is formed by a rack, a feeding barrel and a slaughtering device, wherein the feeding barrel is mounted at the one end of the rack and the slaughtering device is arranged at the other end of the rack; the feeding barrel and the slaughtering device are movably connected through a feeding hose and a hose clamp; and the slaughtering device is provided with a protection cover. The eel and loach slaughtering machine disclosed by the invention adopts a feeding roller to randomly grasp and convey eel and loach, the slaughtering speed is high, the slaughtering requirements on eel and loach with different sizes can be met, and the frequent problems that some eel and loach are not correctly slaughtered or are not slaughtered when an existing slaughtering machine is used for slaughtering eel and loach with different sizes are solved. When the eel and loach slaughtering machine disclosed by the invention is used for slaughtering eel and loach, eel and loach do not need to be classified according to specifications and sizes in advance, so that the labor intensity of workers is reduced and the working efficiency is improved; and eel and loach can be slaughtered from abdomens or from backs through the selection connection between the feeding hose and a back cutting supporting plate and between the feeding hose and an abdomen cutting supporting plate, and furthermore, the requirements on deep processing of eel and loach can be met.

Method and apparatus for severing tire ply stock (S) wherein the apparatus includes a knife assembly (14) utilizing a blade (50) having a curved leading edge (58) and a straight trailing edge (62) which meet at a leading point (66). The ply stock (S) is supported by a slotted anvil (26) in the area immediately adjacent a cut line. In operation, the knife assembly (14) is lowered and the leading point (66) pierces the ply stock (S) between adjacent cords. During the downward stroke, the trailing edge (62) back-cuts the ply stock (S) from the insertion point (98) to a first lateral edge (18). The leading edge (58) severs the remainder of the ply stocks (S) as the knife assembly (14) traverses the ply stock to a second lateral edge (22).

The invention provides a manufacture method of a clinical personalized and integrated all-ceramic post-and-core of dentistry. The manufacture method is characterized in that a high-precision and short-wavelength visible scanner is adopted and directly used for scanning intraoral defected teeth subjected to root canal preparation, the CAD/CAM (Computer Aided Design/Computer Aided Manufacturing) central incisor prosthetic design is adopted, the design of integrating the post and the core is accomplished, and then the incisor back-cut method design is carried out to accomplish the design of the integrated all-ceramic post-and-core, and numerical control processing equipment is adopted and used for processing in order to accomplish the manufacture of the all-ceramic post-and-core.

The invention discloses a multi-target optimization method for numerical control machining technological parameters facing energy efficiency, aiming at realizing the aims of the technical scheme. The multi-target optimization method comprises the following steps: (1) setting a main shaft rotary speed n, a feeding mount of each tooth fz, back cutting depth ap and side cutting depth ae of numerical control cutting machining; (2) establishing a multi-target optimization model of the numerical control machining technological parameters, wherein minF(n, fv, ap, ae)=(minSEC, minTp); (3) determining a constraint condition; (4) optimizing the target model to obtain values of the corresponding n, fz, ap and ae when the minF(n, fv, ap, ae) is obtained; and (5) carrying out cutting machining on a workpiece by adopting the main shaft rotary speed n, the feeding mount of each tooth fz, the back cutting depth ap and the side cutting depth ae of the step (4).

The invention relates to a changeable and once-forming trimming chamfer cutter and a manufacturing process thereof, being particularly suitable for double-sided chamfering and deburring of through holes, composite holes and half through holes of various composite complex bodies. The device comprises a core shaft and a cutting tool which is arranged on the core shaft. The device is characterized in that the cutting tool is provided with a strip-shaped arbor and a knife head which is at one end of the arbor, the knife head is provided with a front cutting edge and a back cutting edge, the core shaft is opened with an elastic closed slot, the knife head is arranged in the elastic closed slot and a governing mechanism is arranged between the core shaft and the arbor of the cutting tool. Compared with the prior art, the invention has the following advantages: 1. the chamfer cutter has reasonable design and simple structure, and the cutting tool can be changed conveniently without any damage to work pieces, and the processed products have high precision. 2. chamfering and deburring of the two ends of the hole can be completed once with wide application range. 3. the chamfer cutter has simple processing technology, easy processing and manufacture and convenient assembly and disassembly.

The invention belongs to the technical field of plate machining equipment, in particular to a cutting machine for forming external wall heat-insulating plates. The cutting machine comprises a charging conveyor and a discharging conveyor, wherein a centering device, a main cutting device and a fixed-length cutting device are sequentially arranged in a plate flowing direction of the charging conveyor; the centering device is used for adjusting positions of blanks to make the blanks align with the center of a back cutting device; the main cutting device is used for performing peeled cutting and layered cutting on the blanks; the fixed-length cutting device is used for cutting the blanks subjected to peeled cutting and layered cutting according to fixed length; and the discharging conveyor is positioned behind the fixed-length cutting device. The cutting machine is rational in structural design; the whole process of cutting the blanks and final plates are divided into three steps, namely centering, peeled cutting and layered cutting, and fixed-length cutting, so that division of labor of devices is clear, and the devices are matched closely; and the cutting machine has high automaticity, and good cutting and forming effects are achieved.

The invention relates to a coaxial image system applied to an LED laser cutting device, comprising a coaxial LED point light source module, a 45-degree total reflection mirror, a wide-angle CCD module, a first 45-degree spectroscope, a small-vision field high-magnification upper CCD module, a second 45-degree spectroscope, a wavelength selection mirror, an LED ring light source, a focusing lens and a small-vision field high-magnification lower CCD module; the coaxial LED point light source module, the wide-angle CCD module and the small-vision field high-magnification upper CCD module are arrayed in parallel from top to bottom, the wavelength selection mirror is mounted between the CCD module and the focusing lens, the LED ring light source clings to the focusing lens which faces directly towards a workpiece, the small-vision field high-magnification lower CCD module is mounted below the workpiece. The invention realizes coaxial real-time image positioning function in the LED laser cutting device, combined usage of the wide-angle CCD and the small-vision field high-magnification upper CCD realizes micrometer-grade measurement accuracy, and the convenient switch of the small-vision field high-magnification upper CCD and the small-vision field high-magnification lower CCD meets the demands of front-cutting, back-cutting, surface coarsening and the cutting of back-aluminized wafer.

The invention provides a cutting method of a wafer grade white-light LED chip. The method comprises the steps of preparing a vertical structural GaNLED wafer chip by the substrate transfer process; cutting a cutting channel in the front surface of the wafer through laser to form a concave groove; coating a fluorescent coating on the wafer chip; baking and solidifying; thinning the rear surface of the wafer chip; evaporating a back metal layer; performing back cutting for the wafer chip through a blade, wherein the cutting position is corresponding to the concave groove in the front surface; splitting along the concave groove in the wafer ship to obtain single white-light LED chip. With the adoption of the method, the wafer grade white-light LED chip can be smoothly separated without damaging the fluorescent glue layer on the surface of the LED chip, so that the phenomena of breaking and cracking in the traditional cutting process can be avoided, and the yield of white-light LED can be increased.

The present invention is high speed rolling forming machine, and belongs to the field of metal plate cold bending apparatus manufacturing technology. The high speed rolling forming machine consists of a frame with a transmission mechanism, an ultrasonic device and an active unwinding device set in the front part of the frame, a front cutting device, a front guiding device, a lubricating device, a rolling set, a back cutting device, a stocking device and a roller conveyer, etc. The present invention has high automation, high operation efficiency and high product quality.

The invention discloses a fish killing machine. A scaling mechanism, a traction mechanism, a back cutting mechanism and an intestine scraping mechanism are arranged on a rack of the fish killing machine, wherein two first vertical rods are arranged in parallel in sequence in the scaling mechanism; a sliding sleeve movably sleeves each first vertical rod; the two sliding sleeves can vertically reciprocate synchronously; a high-pressure nozzle is fixedly arranged on each sliding sleeve through a connecting part; the two high-pressure nozzles are supplied with water through one same high-pressure water supply system; the water ejection holes of the two high-pressure nozzles both face rightwards; scales on the back and two sides of fish are flushed off through high-pressure water columns ejected from the two high-pressure nozzles; a first rotating shaft is horizontally arranged between the vertical rods and the traction mechanism; a scaling roller for removing the scales on the fish belly fixedly sleeves the middle of the first rotating shaft. By adopting the fish killing machine, scaling, back cutting, intestine scraping and viscus removing are rapidly and efficiently achieved, so that manual work can be replaced to automatically kill fishes, both the scales, the intestines and the viscera can be removed and the fish meat cannot be damaged, and the fish meat loss is small.

The invention discloses a method for adjusting the flowering time of loquats. The method for adjusting the flowering time of loquat comprises the steps of: A. after fruit picking, appropriately removing over-dense branches of crowns of loquat trees planted in ecoregions of dry-hot valleys of the Jinsha River, and cutting the side shoots of dense branches with more than 2 shoots on the periphery of the crowns; shearing off cross and overlaid branches and weak branches; back cutting slim and fragile braches to a large extent, and back cutting strong bearing branches slightly; and back cutting the branches with young shoots at the connecting part of the old shoots and young shoots; B. heavily applying organic fertilizer within 5 to 7 days after shearing, and watering in time; and C. applying 25 to 40 kilograms of phosphatic fertilizer, 8 to 12 kilograms of potash fertilizer, 6 to 8 kilograms of nitrogenous fertilizer per 667 square meters of field from June to July, and spraying leaf fertilizer twice or three times in the period when the summer shoots and leaves turn green; and simultaneously, bending or cutting vertical branches, the diameter of which is larger than 1.5 centimeters, in a twisting way. The method for adjusting the flowering time of loquats can be used for delaying the flowering time of loquats planted in the ecoregions of dry-hot valleys of the Jinsha River, preventing the loquats from flowering in June or before June, and enabling the spikes to blossom in July to August concentratedly, the flowering ratio and fruiting rate to be high, the fruit quality to be high, and the fruit to be supplied on the market in a fruit off-season relatively concentratedly.

A method for machining the waved back cutting edge of the milling cutter used to machine spirally slotted surface on workpiece includes such steps as installing a copying plate, trimming the machining surface of abrasive disc, arranging change gear, clamping the workpiece to be machined, aligning cutter, and grinding.

The invention provides a prediction method of service life of a drilling tool with CFRP(carbon fiber reinforced plastic) and titanium alloy laminated structure, and relates to the technical field of carbon fiber composite material and titanium alloy laminated assembling. According to the prediction method, a carbon fiber composite material and titanium alloy laminated structure drilling dynamic real-time cutting force analysis module, a composite material lamination defect analysis module, a composite material tearing defect analysis module, and a drill bit back cutting side attrition value analysis model are built, and the effective service life of the drill bit is predicted and analyzed according to current drill bit structure parameter and drilling process parameter. The prominent problem that service life of the drilling tool with CFRP and titanium alloy laminated structure is not easy to predict accurately so that the low qualification rate and the high part scrap rate are caused due to the fact that effective service life of the tool is exceeded is solved; the composite material drilling defect and the drilling tool back cutting side abrasion are taken into consideration comprehensively, the maximum hole drilling quality of the laminated structure can be predicted effectively, the part scrap rate caused by exceeding of the service life of the tool is reduced, and the highest drilling effect of the tool is achieved.

The invention discloses an end mill with unequal helical angles, which comprises a cutting part and a handle part, wherein the whole cutting part is provided with a plurality of chip discharging grooves which helically extend from the bottom end to the handle part; the surface of each chip discharging groove facing the cutting rotation direction is a front cutting surface; each front cutting surface is crossed with the peripheral surface of the cutting part to form a peripheral blade; the helical angle of at least one peripheral blade is different from the helical angles of other peripheral blades; the surface connected with each peripheral blade in the peripheral surface of the cutting part is a back cutting surface positioned on a plane which is perpendicular to the rotary axis of the end mill; the outline of each chip discharging groove is formed by smoothly connecting a curve PM, a curve MN and a curve NQ; each chip discharging groove extends from a projection point P of each peripheral blade to a projection point M of each front cutting surface in the shape of a concave curve, extends from the point M to a point N in the shape of a concave curve, and extends from the point N in the shape of a convex curve and is crossed with the back cutting surface of each peripheral blade at a point Q; and the curve MN is tangential with the thick-core circle of the end mill at a point D. The end mill with unequal helical angles has the advantages of simple structure and strong vibration resistance and can improve the chip discharging property.

The invention discloses an adjustable type electromagnetic damping vibration absorption boring bar, and belongs to the field of mechanical machining. The problems that an existing vibration absorptionboring bar based on a damping device is prone to failing, or complex in structure and large in manufacturing difficulty are solved. The vibration absorption boring bar is characterized in that corresponding relation tables of process parameter combinations and optimal exciting current are preset in a master controller, each process parameter combination comprises rotating speed, the feeding amount, the back cutting depth amount, the workpiece material and boring cutter geometric parameters, the electromagnetic damping device is motivated by the optimal exciting current to enable the radial vibration of a bar body under the corresponding process parameter combination to be minimum, and the master controller searches the process parameter combination closest to the input actual process parameter combination and the corresponding optimal exciting current from the corresponding relation table before the vibration absorption boring bar is used for boring and machining, the master controller is further used for controlling an excitation current source to carry out excitation on an electromagnetic damping device when the vibration absorption boring bar is used for boring, and the electromagnetic damping device is motivated by the optimal exciting current to carry out vibration absorption on the bar body.

A cutting blade assembly (8) for a rotary mower. The assembly (8) comprises a blade carrier (1) and four swing-back cutting blades (10) (only one of which is shown). The blade carrier (1) has a substantially planar discoid body (2), a mount (3) for mounting the body (2) to a drive shaft assembly (not shown) of the mower, four airflow passages (5) extending through the body (2), and a blade connecting mechanism (6) for connecting the blades (10) to the body (2). The body (2) is made of laser- or plasma-cut, high-strength steel (Bisplate 80™) having a thickness in the order of 5 to 6 mm.

The invention discloses an LED drive device, a controller of the LED drive device and a dimming mode detection method. The dimming mode detection method comprises the steps that direct current bus voltages are sampled to generate voltage sampling signals; the rise time needed by the voltage sampling signals increasing from a second threshold value to a first threshold value is compared with a first time threshold value so as to judge whether the LED drive device is connected to a front cut dimmer or not; the fall time needed by the voltage sampling signals reduced from a third threshold value to a fourth threshold value is compared with a second time threshold value so as to judge whether the LED drive device is connected to a back cut dimmer or not; if whether the LED drive device is connected to the front cut dimmer or the back cut dimmer is not detected within preset duration, the LED drive device is not connected to the dimmers.

The invention discloses an automatic winding displacement fixed length cutting machine, which comprises a machine table and is characterized by also comprising a front pressing part, an upper cotton paper pasting mechanism, a lower cotton paper pasting mechanism, a rear pressing part and a cutting wire coiling mechanism, wherein a total fixing plate is arranged on the machine table, the front pressing part, the upper cotton paper pasting mechanism, the lower cotton paper pasting mechanism and the rear pressing part are sequentially arranged on the total fixing plate, the cutting wire coiling mechanism is arranged at the back end of the rear pressing part, the front pressing part and the rear pressing part respectively comprise air cylinders, upper press wheels and lower press wheels, the lower press wheels are fixedly arranged on the total fixing plate through a rotating shaft, the air cylinders are arranged above the lower press wheels, and air cylinder rods of the air cylinders are connected with the upper press wheels positioned on the tops of the lower press wheels. The invention provides the automatic winding displacement fixed length cutting machine with the advantages that the structure is simple, the automation degree is higher, the processing speed is high, the wire harness cotton paper pasting position can be fast and accurately found, in addition, the wire harness can be fast cut, and in addition, the front and back cutting length consistency is ensured.

The invention discloses a safety easy-to-use device for shrimp back cutting and vein removal, which comprises a shrimp holding and adjusting groove, a fixing device for fixing shrimps to be cut and acutting device for cutting shrimp backs; a slideway for transporting shrimps is arranged in the bottom of the shrimp holding and adjusting groove, a roller is arranged above the slideway, and the slideway and the roller jointly form the fixing device; the cutting device at least comprises a cutter that is arranged above the slideway and behind the roller. The safety easy-to-use device for shrimp back cutting and vein removal requires a worker only to put shrimps into the shrimp holding and adjusting groove that is in a static state during operation, the worker does not worry about hurting hands mentally during operation, and working efficiency can be improved.

The invention relates to the technical field of semi-automatic assembly of cooling fans, in particular to a fan assembling machine. The fan assembling machine comprises a rack and is characterized in that a bearing loading mechanism, a bearing carrying mechanism, a blade rotor pressing-in mechanism, a lower bearing, snap spring and backing ring pressing-in mechanism, a finished product unloading mechanism, an image detecting mechanism and two rotating disks are arranged on the rack; the bearing loading mechanism comprises a bearing casing pipe group, a bearing pushing assembly, a laser sensor, a front cutting air cylinder and a back cutting air cylinder; and all the mechanisms share the work and cooperate with one another, casings and fan blade rotors are manually placed on the discharging station of the upper rotating disk, snap springs, backing rings and lower bearings are manually placed on the discharging station of the lower rotating disk, and other assembling actions are completed automatically. The machine has the advantages of being convenient to operate, high in working efficiency, stable in working performance, capable of realizing semi-automatic assembly and the like.

The invention discloses a triangle adhesive attaching machine of tire manufacture production. It contains a product line including adhesive feeding machine, extrusion machine, adhesive delivery device, fixed length cut-off device and winding attaching device. Its invention characters are: the adhesive delivery device contains a guide positioning mechanism which erectly delivery the triangle adhesive into the winding device. The fixed length cut-off device contains front-back cut-off cutter which locates on the delivery path of the triangle adhesive and can realize whole moving and swinging angle. The winding attaching device contains winding device which drives the traveler rotating and compacting mechanism which press and attach the triangle adhesive on the traveler. The guide positioning mechanism is composed of a guide roller and multi-group holding rolls. The movement of the cut-off cutter is controlled by the cut-off signal from the winging device. The compacting mechanism is composed of multi-group press rolls which distribute uniformly on the circle and can release and tighten along the radial. The invention is fit for the composite pressing of triangle adhesive and traveler in the huge tires, which has advantages of simple structure, high mechanization degree and automatic control.