50 results about "Back cutting" patented technology

The invention relates to the technical field of milling cutters, in particular to a multi-tooth micro-blade milling cutter and a manufacturing method and application thereof. The multi-tooth micro-blade milling cutter comprises a cutter handle and a cutter head body, wherein the cutter head body is fixedly connected to one end of the cutter handle; the multiple cutter teeth are arranged on the outer side face of the cutter head body, and each cutter tooth extends to the tail end, close to the cutter handle, of the cutter head body from the top end, away from the cutter handle, of the cutter head body; each cutter tooth comprises a front cutter face, a rear cutter face and a cutting edge, the cutting edge is provided with a plurality of continuously-distributed micron-sized protruding micro-blades, the micro-blades form an arc-shaped sawtooth structure, the micro-blades extend to the front cutter faces and form micro grooves in the front cutter faces, the micro-blades extend to the front cutter faces and form micro grooves in the front cutter faces, and the micro-blades extend to the rear cutter faces and form micro grooves in the front cutter faces. The multi-tooth micro-blade milling cutter has the structure of the front angle of the front cutter face of the milling cutter tooth and the rear angle of the rear cutter face of the milling cutter tooth, the linear cutting blade of the traditional cutter tooth is dispersed into micro blades, the stress concentration of the cutter is reduced, a plurality of convex micro blades are in grinding motion on the machining face in the milling process, and the milling and grinding combined machining effect is formed. Unification of machining efficiency and machining precision is achieved.

The embodiment of the invention provides a wafer back alignment mark, a manufacturing method of the wafer back alignment mark, a wafer back cutting method, a wafer back photoetching method and a preparation method of a semiconductor device. The manufacturing method comprises the following steps: providing a wafer of which the front surface is provided with a tube core and a scribing channel; a blind hole array corresponding to the scribing channels is manufactured in the edge area of the front face of the wafer, and the hole depth of blind holes is larger than the first thickness; thinning the middle region of the back surface of the wafer, and manufacturing a metal layer in the thinned middle region of the back surface of the wafer; and grinding the edge area of the back surface of the wafer to enable the blind hole array in the edge area to be completely exposed, and forming a wafer back surface alignment mark which is displayed on the back surface of the wafer and can be used for scribing or photoetching the back surface of the wafer. By means of the manufactured wafer back face alignment mark, processes including wafer back face cutting or wafer back face photoetching and the like can be executed on the back face of the wafer, and the problem that effective wafer back face alignment marks are lacked when related manufacturing processes are carried out on the back face of the wafer in the related technology is solved.

The present invention belongs to the field of cutting technology, and specifically relates to a tool chip breaking structure and a cutting tool having the same, which is arranged on a corresponding cutting component, the cutting component having a front cutting face, a rear cutting face and a cutting edge located at the intersection of the two, the tool chip breaking structure includes a first chip breaking face, the first chip breaking face has a first side edge intersecting with the front cutting face, and the first chip breaking face is bent in a direction away from the plane where the front cutting face is located, each point on the curved trajectory line of the first chip breaking face is located on the same side of the plane where the front cutting face is located, and the center of the curved trajectory is located outside the cutting component. When chip breaking is performed, the cutting edge causes basic deformation of the chip, and then the chip reaches the first cutting face via the front cutting face, and undergoes secondary deformation along the curved trajectory of the first cutting face to achieve further hardening and embrittlement until the tool breaks the chip, which can achieve from semi-finishing to finishing to meet different cutting depths and feeds.

A blade body is of a hexagonal prism structure and is provided with an upper end face, a lower end face, two sets of side positioning faces, two sets of rear tool faces and two sets of auxiliary faces, the side positioning faces, the rear tool faces and the auxiliary faces are oppositely arranged in pairs, a main cutting edge is formed at the intersection position of the upper end face and each rear tool face, and each main cutting edge is connected with a fillet tool nose. A chip groove is formed in the upper end face. The cutter is sharp in cutting edge, light and fast in cutting, small in depth of penetration, large in feed amount, thin in cuttings, high in cutting efficiency, capable of rapidly guiding and breaking the cuttings, long in service life, convenient and fast to replace and particularly suitable for milling materials difficult to machine, and the production of cutting heat is reduced due to the high feed amount. The milling cutter can well replace a traditional integral alloy milling cutter to be used for fast and efficient bottom edge rough machining production.

The utility model discloses an EMAS characteristic blocking material unloading and cutting device which is characterized in that an unloading mechanism comprises a main body frame, and a walking trolley and a lifting pallet fork assembly are arranged on the main body frame and used for transferring products; the sawing machine mechanism comprises a bottom frame, a sawing machine platform is arranged on the top face of the bottom frame through a guide rail assembly, and the sawing machine platform linearly reciprocates on the top face of the bottom frame in the length direction of the bottom frame through a driving assembly. The top cutting mechanism is erected above the sawing machine mechanism and located on one side of the lower frame mechanism. The front-back cutting mechanism comprises a front cutting assembly and a rear cutting assembly which are arranged at the two ends of the bottom frame correspondingly. The left-right cutting mechanism comprises a left cutting assembly and a right cutting assembly which are arranged on the top cutting mechanism and located on the two sides of the sawing machine platform respectively. According to the off-frame cutting equipment for the blocking materials with the EMAS characteristics, automation of product transferring and cutting is achieved, manual participation is reduced, and the working efficiency and the cutting effect are improved.

The invention relates to the technical field of laser cutting devices, and provides a laser cutting device for knapsack production, which adopts a back cutting process mode, can effectively reduce hair surface damage and improve cutting quality while being matched with a fur material to complete auxiliary cutting operation, and is matched with a special positioning structure of the fur material. The cutting-in device can achieve cutting-in action relative to a fur material more accurately, the pressing contact area of the cutting-in device and the fur material is smaller, so that pressing-down on a fur surface is reduced to a greater extent, and the adverse effect on the fur surface during cutting operation is further reduced. The cutting-in device comprises an equipment base, and further comprises a cutting structure and an electrostatic adsorption structure, and a mounting cylinder is fixedly connected into the equipment base; the cutting structure comprises a laser cutting head, the laser cutting head is mounted in a mounting cylinder through a driving assembly, a glass workbench is mounted at the top end of the mounting cylinder, the electrostatic adsorption structure comprises a lifting frame and an electrostatic conductor plate, the lifting frame is slidably connected with the equipment base, and an electric lifting rod is mounted at the top end of the lifting frame.

The utility model belongs to the field of clothes, and particularly relates to a school uniform vest with a warning function and a night safety function, which can improve the safety of the clothes, comprises a vest body, and is characterized in that the vest body is formed by splicing a front cutting piece and a rear cutting piece at the top; a front warning lamp and a rear warning lamp are installed at the chest position and the back position of the front cutting piece respectively, the front warning lamp is installed on straps on the two sides of the chest position of the front cutting piece, a pocket for containing a circuit board is arranged on the front cutting piece, a power line is arranged in the straps and connected to the circuit board, and the back warning lamp is installed on the back of the back cutting piece. The rear warning lamp is installed on a warning strip, a circuit board is arranged in the warning strip, and the warning strip is bonded with the rear cutting piece through a hook-and-loop fastener.

The invention discloses a tooth-cutting blade applicable to multiple modules, wherein the working part of the tooth-cutting blade comprises a cutting edge, a front cutting face and a back cutting face. According to the parameters of each of M workpieces, a three-dimensional model of the corresponding working part of the tooth-cutting blade is constructed respectively, and the back cutting face thicknesses of the M three-dimensional models are H1, H2, H3, H4, H5, H6, H7, H8, H9, H10, H11, H12, H13, H14, H15, H16, H17, H18, H19, H20, H30, H41, H52, H63, H74, H84, H9, H10, H11, H12, H13, H14, H15 M , the maximum value is selected as the thickness H of the back face of the tooth-cutting blade, and the distances from the cutting edge vertex to the blade center of the M three-dimensional models are L1, L2, L3...L M , the maximum value is selected as the distance L from the cutting edge vertex to the center of the blade. The maximum widths of the cutting edge curves of the M three-dimensional models are B1, B2, B3, ... B M , the maximum value thereof is selected as the maximum width distance B of the cutting edge curve of the tooth-cutting blade. The multi-module tooth-cutting blade provided by the present invention can be applied to the processing of multiple workpieces with different modules and has strong versatility.

The invention relates to a method for controlling the oxygen content of a silicon single crystal rod. The method comprises the steps that an oxygen content target value and the change rate of the oxygen content along with the reverse cutting length are preset; according to the change rate of the oxygen content along with the reverse cutting length, the oxygen content of the rod in the last heat and the oxygen content of the rod in the last heat are obtained; according to the oxygen content of the current rod in the last furnace and the oxygen content of the last rod in the current furnace, the oxygen content of the current rod in the current furnace is obtained; and according to a preset oxygen content target value and the oxygen content of the rod of the furnace, the reverse cutting length of the rod of the furnace is obtained. According to the method and the device, the reverse cutting length of the single crystal silicon rod of the current furnace time and the current rod time can be accurately controlled, so that on the basis of ensuring that the oxygen content of the single crystal silicon rod reaches the standard, the problems of waste of the single crystal silicon rod and production efficiency reduction caused by secondary reverse cutting are avoided.

The invention belongs to the technical field of glass film laminating, and discloses a vertical frame type glass film laminating machine which comprises a film laminating mechanism and conveying mechanisms arranged on the front side and the rear side of the film laminating mechanism, the film laminating mechanism comprises a film laminating support, and a front film laminating assembly and a rear film laminating assembly are oppositely arranged on the film laminating support; the front film covering assembly comprises a front film scraping assembly, a front cutting assembly, a rotationally arranged front roller and a conveying assembly, the rear film covering assembly comprises a rear film scraping assembly, a rear cutting assembly and a rotationally arranged rear roller, the front roller and the rear roller are used for rolling and covering the two sides of the glass, and the front film scraping assembly and the rear film scraping assembly are used for scraping plastic films attached to the two sides of the glass to be flat; the front cutting assembly and the rear cutting assembly cut plastic films after the two sides of the glass are pasted with the films. In this way, as long as the glass moves forwards along the conveying assembly, the film covering work can be completed after one stroke of movement, manual participation is not needed, the automation degree is high, the production efficiency of glass film covering is greatly improved, and the production cost is reduced.

Disclosed in the present invention are a device for preparing an incompletely covering coating on a cemented carbide blade and a method for preparing a multilayer-coated cemented carbide blade. The device comprises a base plate (1) and / or a cover plate (2) which can be placed in a high-temperature coating furnace, wherein the base plate (1) is plate-shaped, and a cavity (3) capable of accommodating a blade to be coated (9) is formed on an upper surface (10); a back coating opening (4) penetrating through an outer peripheral surface of the base plate (1) is formed on a side surface (31) of the cavity (3), and the back coating opening (4) at least corresponds to any incompletely covering coating unit to be formed on a back cutting surface (92) of said blade (9); the cover plate (2) can cover a front cutting surface (91) of said blade (9), the cover plate (2) is provided with a front coating opening (5) penetrating through the upper and lower surfaces of the cover plate (2), and the front coating opening (5) at least corresponds to any incompletely covering coating unit to be formed on the front cutting surface (91) of said blade (9). By means of the device of the present invention, the method can achieve the preparation of a layer of incompletely covering coating units on the surface of the cemented carbide blade, and the prepared multilayer-coated blade is stable and reliable and has good coating performance.

The invention discloses an ultrasonic scalpel head, an ultrasonic scalpel and an ultrasonic scalpel system.The ultrasonic scalpel head comprises a first cutting structure and a balance structure, the first cutting structure comprises a first tangent plane and a second tangent plane, and the first tangent plane and the second tangent plane are both in an inward concave shape; the first tangent plane and the second tangent plane are oppositely arranged; a back cutting edge is formed between the first cutting surface and the second cutting surface; the balance structure comprises a first balance surface and a second balance surface; when the back cutting blade cuts the fascia, the first groove and the second groove are clamped into the fascia, so that the depth of the tool bit penetrating into the fascia can be controlled, and the tool bit cannot slip in the fascia cutting process; water mist is focused near the side face of the tool bit in the diverging process, diverging energy of most of the water mist can be offset through focusing, and therefore the number of the water mist is effectively reduced, and the surgical visual definition is improved. The balance structure can reduce transverse vibration, so that stress borne by the tool bit during vibration is reduced, the tool bit breaking probability is reduced, and the service life of the tool bit is prolonged.

The utility model discloses a backing paper back cutting waste removing device which comprises a discharging assembly, a slitting assembly and a material distributing assembly. The discharging assembly is used for providing materials for the slitting assembly. The slitting assembly comprises a slitting roller, a moving mechanism, an adjusting mechanism and a cutter mechanism. Materials provided by the discharging assembly bypass the position below the slitting roller, the output end of the moving mechanism is connected with the adjusting mechanism, the moving mechanism is used for driving the adjusting mechanism to move, the output end of the adjusting mechanism is connected with the cutter mechanism, the adjusting mechanism is used for adjusting the height of the cutter mechanism, and the cutter mechanism is arranged below the slitting roller. The cutter is used for cutting materials; and the material separating assembly is used for separating the cut materials from the waste materials. According to the utility model, waste materials can be removed in the production process, and the production efficiency of products is improved.

The invention discloses a method for cutting a metal substrate wafer, which relates to the technical field of semiconductors and comprises the following steps of: evaporating a metal material on the back surface of the metal substrate wafer to form a first cutting protection layer; spin-coating water-soluble cutting protection liquid on the first cutting protection layer, and drying to form a second cutting protection layer; cutting the second cutting protection layer by adopting a first laser beam to form a first groove; continuously cutting along the position of the first groove by adopting a second laser beam to form a second groove; and cleaning and removing the second cutting protection layer so as to complete back cutting of the metal substrate wafer. Through mutual cooperation of the first cutting protection layer and the second cutting protection layer and step-by-step laser cutting, scraps, slag and the like can be effectively prevented from remaining on the edges of the core particles, the generation range of a heat affected zone can be effectively reduced, and the cutting yield of the metal substrate wafer and the packaging yield of the core particles can be remarkably improved.

The utility model relates to a pork product processing and dicing device, and belongs to the technical field of pork product processing and dicing. Comprising a pork dicing device, a first conveying belt is arranged in the pork dicing device, a cutter assembly is arranged in the middle of the pork dicing device, a control panel is arranged on one side of the conveying pork dicing device, and a rotating assembly is arranged at the output end of the pork dicing device; according to the pork slicing device, the rotating assembly is arranged, a driving motor is started to drive a driving pin rod to rotate, the driving pin rod drives a quartered plate to automatically rotate by 90 degrees, pork strips automatically rotate, then the pork strips reversely rotate through a first conveying belt and then are input into a cutter assembly again for back cutting, and then the pork strips are cut back. The pork blocks are changed into uniform streaky pork blocks, an existing mode of manually rotating pork strips for cutting is replaced, and the cutting efficiency is improved.

The invention provides a wafer back alignment mark and a manufacturing method thereof, a wafer back cutting method, a wafer back photoetching method and a preparation method of a semiconductor device. The manufacturing method of the wafer back alignment mark comprises the following steps: providing a wafer of which the front surface is provided with a tube core; a scribing channel and an insulating layer covering the tube core and the scribing channel are manufactured on the front face of the wafer, and the channel depth of the scribing channel is smaller than the first thickness; performing primary back surface thinning processing on the back surface of the wafer to a first thickness, and manufacturing a metal layer on the back surface of the thinned wafer; and carrying out secondary back thinning treatment on the edge region of the back of the wafer to expose the insulating material in the scribing channel in the edge region, and forming a wafer back alignment mark for scribing or photoetching the back of the wafer. Therefore, the manufactured wafer back surface alignment mark can be utilized to execute processes including wafer cutting or wafer photoetching and the like on the back surface of the wafer, and the defect that an effective wafer back surface alignment mark is lacked when a related manufacturing process is carried out on the back surface of the wafer in the related technology is overcome.

The application discloses a kind of warping LED chip protection liquid method, in turn is chip front face film, back cutting, chip overturn, protection liquid drop, protective film covers, vacuum adsorption and centrifugal rotation.Combining the warping characteristics of the existing grinding method to the LED chip, by chip front face film, reduce the risk of chip fragment, chip back cutting releases grinding stress to reduce chip warping, protective film covers can guarantee that all areas of warping LED chip are wrapped with protection liquid, centrifugal rotation makes the protection liquid of LED chip surface everywhere uniform, forms tight and uniform protective layer on the surface of LED chip, plays the role of isolation heat and metal debris when laser cutting, achieves the effect that chip surface circuit is not oxidized and chip is not broken edge, after laser cutting, clean up metal debris and residual protective layer completely.

The invention discloses an anti-overcut satellite antenna reflecting surface shearing device, and belongs to the technical field of cutting equipment. The device comprises a lathe bed module, a laser cutting module and a bottom preheating module, the bottom preheating module is arranged below a laser cutting head, a trumpet-shaped laser waste heat absorption opening of the preheating device is used for absorbing waste heat of cutting points on the back of a plate, and a blower device is matched with an air heating mechanism to conduct the waste heat to a conical preheating nozzle; the device is provided with a preheating module for preheating plates on a follow-up cutting route, the overcutting risk in the laser cutting process is effectively reduced, the device is further provided with a lifting material preparation module, automatic replacement of a multi-station plate cutting table board can be achieved, and the production efficiency is improved. The method is particularly suitable for machining precise curved surface components such as a satellite antenna reflecting surface, the quality of the cut edge can be remarkably improved, and the subsequent assembly flatness is guaranteed.

The utility model discloses a multi-fillet double-sided four-edge square shoulder milling blade, which is characterized by comprising a blade main body with a cuboid structure, two symmetrically arranged bulges are formed on each of the upper plane and the lower plane of the blade main body, and a side edge, a bottom edge and a fillet are formed at the joint of each bulge and one side surface, the joint of each bulge and a rear cutter surface as well as the joint of each bulge and an arc surface; a chip breaking area is formed between each protrusion and the upper plane or the lower plane. The four cutting edges which can be used for cutting are formed on the cutter, the first front cutter face, the second front cutter face and the curled face are formed on the side of each cutting edge, the requirements for chip breaking and chip curling in different cutting depths in the cutting process can be met, the perpendicularity of the cutter machining face is high, the machining precision is high, and the service life of the cutter is prolonged. The milling cutter is simple in structure, capable of guaranteeing that products of different batches keep stable and consistent machining quality, suitable for square shoulder and plane milling of steel parts, stainless steel, high-temperature alloy, titanium alloy and other materials, wide in application, high in blade utilization rate, long in service life and high in overall economic value.

The present application relates to the technical field of food processing, and discloses an automatic eel aligning, positioning, cutting and killing device for aquatic product processing, which comprises a rack, a cutting and killing box body arranged on the rack, a plurality of feeding channels arranged on one side of the cutting and killing box body, a lifting assembly arranged on the rack and used for controlling the lifting of the cutting and killing box body, a first cutting and killing box and a second cutting and killing box arranged in a vertical mode, a plurality of feeding ports arranged on one side of the first cutting and killing box and the second cutting and killing box in a horizontal mode, the number of the feeding ports being the same as that of the feeding channels, a plurality of discharging ports arranged on the other side of the first cutting and killing box and the second cutting and killing box in a horizontal mode, the number of the discharging ports being the same as that of the feeding ports, and a plurality of cutting and killing assemblies arranged in the cutting and killing box, each of the feeding ports being provided with a cutting and killing assembly. The present application can realize the abdominal cutting and killing and the back cutting and killing of eels, and has the effect of improving the cutting and killing quality.

1. Name of the product in this design: Edge sewing machine (double-sided sewing and subsequent cutting). 2. Application of this design: This design is used for edge stitching of textiles. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The invention provides a fine blanking die female die plasma cutting device and method.The fine blanking die female die plasma cutting device comprises a support and further comprises a machining platform at the top of the support, and a bending mechanism and a cutting mechanism are arranged at the top of the machining platform. The front and back cutting positions of the workpiece are bent in cooperation with application of adjustable up-and-down pulling force, so that cutting openings in the front and back faces of the workpiece are continuously expanded in a v shape, and the workpiece generates metal fatigue through repeated bending of the front and back faces so as to improve the cutting efficiency; and an anti-reflection agent can be conveniently dispensed into a cutting opening, so that the cutting efficiency of the device is greatly improved, and the device is suitable for cutting operation of workpieces with relatively large thicknesses.

Label-liner combinations are provided, each label-liner combination includes a liner substrate and a label substrate. The label substrate includes a first adhesive coated on the backside of the label substrate and an adhesive patch atop a portion of the first adhesive in an area that defines a piggyback label within the label substrate. The label substrate further includes die cuts around a periphery of the adhesive patch. The liner substrate includes a back cut for a removal tab of the piggyback label. The front side of the liner substrate is joined with the backside of the label substrate to form a label-liner combination with an embedded and independent piggyback label defined in an area of the label substrate by the adhesive patch, the die cuts, and an area associated with the back cut in the liner substrate for the removal tab.

The invention discloses an in-situ characterization method for a metal crystal cutting process, which belongs to the field of ultra-precision machining and comprises the following steps: S1, preparing a diamond cutter: preparing a diamond micron slice, cutting a rear cutter surface and a front cutter surface by using current, and polishing the diamond cutter; s2, preparing a workpiece sample: selecting an atomic force microscope probe, preparing a rectangular micron slice by using a focused ion beam micro-nano processing technology, processing a plurality of rectangular slices on the rectangular micron slice by using a focused ion beam, and purging the rectangular slices by using the focused ion beam to complete preparation of the workpiece sample; and S3, cutting experiment: installing the diamond cutter and the workpiece sample on an X-Nano sample rod, cutting the workpiece sample by the diamond cutter, and shooting a bright field image, a dark field image and an electron diffraction pattern of the to-be-detected area by using a transmission electron microscope. According to the invention, the bottleneck that the plastic deformation and fracture behavior of the material in the turning process cannot be dynamically observed in the prior art is broken through.

The cutting insert according to an embodiment of the present invention is a double-sided cutting insert, which includes an upper surface, a lower surface, a side surface, a cutting edge, and a mounting hole passing through the upper surface and the lower surface, wherein the upper surface is provided with a single upper surface boss unit surrounding the mounting hole and being planar, and the cutting edge includes a main cutting edge, a corner cutting edge connected to the main cutting edge, a secondary cutting edge connected to the corner cutting edge, and an edge portion connected to the secondary cutting edge. The first main cutting edge back face connected to the main cutting edge forms an acute angle with the extension line of the upper surface boss unit, and the secondary cutting edge chip breaking surface connected to the secondary cutting edge forms an angle with the extension line of the upper boss unit that increases away from the corner cutting edge. When the cutting insert is observed from the upper surface, the edge surface connected to the edge portion is concavely indented.

The utility model belongs to the field of cutting tools, and particularly relates to a carbon fiber chair back cutting tool which comprises a support, a chair back blank supporting part, a cutting assembly and a control box, the chair back blank supporting part and the cutting assembly are arranged in the X-axis direction and are both fixed to the support, and the control box is arranged on the support. The control box and the chair back green body supporting part are arranged in the Y-axis direction, the chair back green body supporting part is used for containing a chair back green body, and a worker can manually operate the control box so as to control starting and stopping of the cutting assembly, and then the chair back green body is cut. When the chair back cutting device is used for cutting, a user does not need to hold a chair back blank with hands for cutting, potential safety hazards are reduced to a great extent, and cutting accuracy can be guaranteed.

The utility model discloses a poultry processing chest and back cutting device which comprises a processing base, a direct current motor is fixedly installed on the left side of the top of the processing base, an output shaft of the direct current motor is fixedly connected with an electric saw, a material pushing assembly is arranged in an inner cavity of the processing base, and the material pushing assembly comprises a rotating rod rotationally connected to the inner cavity of the processing base. A driven gear is fixedly connected to the surface of the rotating rod, a rack is slidably connected to the top of an inner cavity of the machining base, the driven gear is meshed with the rack, pushing blocks are fixedly connected to the two ends of the front side of the top of the rack, and rectangular sliding grooves matched with the pushing blocks are formed in the two sides of the top of the machining base. According to the meat cutting machine, the pushing assembly and the pushing assembly are used in cooperation, meat located at the top of the processing base is pushed, the meat is pushed backwards, then the direct current motor and the electric saw are used in cooperation, the meat is cut, and the purposes that cutting is easy, convenient and rapid, and using is safe and firm can be achieved.

The application discloses a manually-resettable electric cutting and suturing device, which is internally provided with a driving gear, a sliding gear and a manual reset mechanism in a hand-held part of the electric cutting and suturing device, the manual reset mechanism comprises an operating handle and a sliding gear pushing assembly; the operating handle is rotatably installed on a rotating shaft arranged in the hand-held part, and an outwardly extending pawl is slidably arranged on the operating handle; the sliding gear pushing assembly comprises a cam, a pin shaft, a connecting rod, a limiting sliding block and a pushing spring; the limiting sliding block is slidably arranged in the hand-held part and connected with the pushing spring at a rear end, and a front end of the limiting sliding block is in space interference with a movement track of the pin shaft. Under the premise of meeting the manual back cutting, the pawl structure is adjusted and the limiting sliding block is arranged, so that the locking state of the cam can be released through the subsequent operation of the limiting sliding block, the cam drives the sliding gear to return to the initial state, the whole mechanism is reset to the initial state, and the repeated use of the product is realized.

The invention relates to a processing method for flattening a front body of a female type thermal shirt. A top fly manufacturing method comprises the following steps: S11, making a top fly inner opening line mn; s12, cutting off along a front fly inner opening line mn to increase an extension cutting piece; s13, folding is carried out, so that the mabn is attached to the mncdef; s14, sewing mabn and mncdef along a folding line xy in the front fly; s15, the xmny is folded towards the front face of the xydef along the front fly inner folding line xy, so that the xmny is attached to the front face of the xydef, the mabn is driven to be turned towards the front face, and the mabn is an improved front fly; a breast pocket plate making method; the thickness of the front fly is reduced, so that the front fly is light, thin and soft, the front body is integrally flat, and the garment is comfortable and soft to wear; the extension cutting piece expands the pinching and folding loss amount of the front placket; the waist dart and the chest dart conform to the waist line and the chest line of a woman, the front body is made to be three-dimensional, meanwhile, the pocket cloth rear cutting piece topus, the pocket cloth bright stem cutting piece u1v1x1w1 and the pocket cloth front cutting piece wxpqr extend out of the chest dart, the pocket cloth rear cutting piece topus, the pocket cloth bright stem cutting piece u1v1x1w1 and the pocket cloth front cutting piece wxpqr are combined with the waist dart and the chest dart to be flatly attached to the clothes body after being sewn, and the chest shape is attached to the clothes body in a three-dimensional mode after being worn.

It is known that if the bend line of the undercut (the innermost part (bottom) of the undercut, the intersection of the diagonal cut line and the cross cut line) is formed perpendicular to the felling target, then by making an appropriate back cut afterward, the tree can be felled accurately toward the felling target. This specification discloses a technique that reduces the burden of verification work compared to conventional methods and allows for accurate verification of the direction perpendicular to the bend line. [Solution] The tree felling target indicator disclosed herein is elongated and plate-shaped, and has a contact portion having a first long side and a second long side opposite to the first long side, and an elongated plate-shaped indicator portion extending perpendicularly from the center of the first long side. When viewed from above, the contact portion and the indicator portion form a T shape.