119results about How to "Reduce the number of tool changes" patented technology

The invention discloses a disk-shaped roller cutter ring with high hardness, good toughness and excellent comprehensive performance. The disk-shaped roller cutter ring comprises the following ingredients of: 0.46-0.56% of C, 0.80-1.20% of Si, 0.20-0.65% of Mn, 5.00-5.80% of Cr, 1.15%-1.55% of Mo, 0.85-1.40% of V and the balance Fe and impurities, wherein the content of P is no more than 0.02%, and the content of S is no more than 0.01%; and the overall hardness of the cutter ring is HRC55-61 (Rockwell Hardness C55-61), or the hardness is of graded distribution, i.e. the hardness of a working edge area is HRC55-61, the hardness of a transition surface area is HRC50-57, and the hardness of a step assembly surface area and an inner ring is HRC44-51. A preparation method of the disk-shaped roller cutter ring comprises the following steps of: smelting the raw materials in an electric furnace; carrying out electroslag remelting; preforging; carrying out die forging; carrying out slow cooling; annealing; carrying out rough machining to obtain a disk-shaped roller cutter ring rough blank; carrying out high-temperature vacuum hardening and two-time high-temperature tempering on the cutter ring rough blank; carrying out low-temperature destressing treatment; carrying out fine finishing to obtain the cutter ring with the overall hardness of HRC55-61, wherein the cutter ring with the overall hardness of HRC55-61 is applicable to the tunneling of a hard rock formation by a shield tunneling machine; or carrying out medium-frequency induction tempering treatment prior to the low-temperature destressing treatment to obtain the cutter ring with graded-distribution hardness, wherein the cutter ring with the graded-distribution hardness is applicable to the tunneling of a rock formation with an upper soft part and a lower hard part.

The invention relates to a preparation method of high-toughness polycrystalline cubic boron nitride compound sheets. The preparation method comprises the following steps that: various raw materials are respectively subjected to chemical acid-base treatment and physical vacuum treatment; micro powder of the treated raw materials is respectively mixed according to different mass percent ratios, mixed materials and base body material hard alloy base body sheets are pressed into test blocks according to a certain layer paving sequence; pressed and formed test blocks are put into a molybdenum cup separated by a salt tube shielding layer, then, filled salt tubes are put into a graphite mold, finally, the graphite mold is filled into a pyrophyllite cavity, ends are sealed, and synthesis blocks are obtained through assembling; and the synthesis blocks are sintered together at ultra-high pressure and high temperature to form the polycrystalline hard alloy compound sheets. The preparation method has the advantages that the toughness characteristic of the base body materials is fully utilized, the similar compatibility of the base body materials and polycrystalline layers of the prepared polycrystalline cubic boron nitride compound sheets is good, the fracture toughness property is good, the anti-impact performance is high, the knife breaking phenomenon can be greatly avoided, the knife change times are reduced, the service life is prolonged, and the processing efficiency and the processing precision of a knife tool are improved.

The invention relates to a machine tool, in particular to a numerical control double-station mould engraving and milling machine. A foundation, a left vertical shaft and a right vertical shaft are arranged on a frame body of the machine in a matched way; a beam is arranged above the left vertical shaft and the right vertical shaft in a matched way; the beam is connected with a left X-axle sliding table and a right X-axle sliding table through a left X-axle linear sliding block guide rail pair and a right X-axle linear sliding block guide rail pair in a matched way and the beam is in transmission fit with the left X-axle sliding table and the right X-axle sliding table through a left X-axle ball screw pair and a right X-axle ball screw pair; the foundation is connected with a left Y-axle sliding table and a right Y-axle sliding table through a left Y-axle linear sliding block guide rail pair and a right Y-axle linear sliding block guide rail pair in a matched way and the foundation is in transmission fit with the left Y-axle sliding table and the right Y-axle sliding table through a left Y-axle ball screw pair and a right Y-axle ball screw pair; and the left X-axle sliding table and the right X-axle sliding table are connected with a left Z-axle sliding table and a right Z-axle sliding table through a left Z-axle linear sliding block guide rail pair and a right Z-axle linear sliding block guide rail pair in a matched way and the left X-axle sliding table and the right X-axle sliding table are in transmission fit with the left Z-axle sliding table and the right Z-axle sliding table through a left Z-axle ball screw pair and a right Z-axle ball screw pair. The efficiency of the numerical control double-station mould engraving and milling machine is two times that of the conventional machine tool.

The invention discloses a microwave-assisted rock breaking TBM cutter head for hard rocks. The cutter head comprises a TBM cutter head body, wherein the TBM cutter head body mainly comprises a single-edge rock breaking hobbing cutter, a double-edge rock breaking hobbing cutter, a plurality of water injection dedusting openings and a plurality of microwave-assisted rock breaking emitters; the cutter head covers rock breaking paths in different tracks through the combination of the double-edge rock breaking hobbing cutter and the single-edge rock breaking hobbing cutter; a cutter head panel is provided with the water injection dedusting openings; the cutter head panel is provided with the microwave-assisted rock breaking emitters; each microwave-assisted rock breaking emitter comprises a microwave emitting disc, a wave guiding structure and a microwave emitting module. The cutter head has the advantages that a microwave emitting device is started in case of hard strata, rocks are rapidlyheated through microwave, mechanical properties of rocks, such as the point load strength, uniaxial compressive strength and tensile strength, are reduced, rock joint fissure assisted TBM hobbing cutter rock breaking is added, the penetration speed of disc cutters is improved, the rock breaking rate is improved, the thrust and torque of TBM equipment are reduced, abrasion of the hobbing cutters in hard rocks and cutter changing frequency are reduced, the construction period can be greatly reduced, and the construction investment can be reduced.

The invention discloses a deep cavity processing method based on a titanium alloy monobloc forging component. The deep cavity processing method comprises the following steps of: firstly performing hole drilling process by selecting an uncoated hard alloy drilling-and-cutting blade, wherein an internal cooling manner is adopted; performing inserting-and-drilling processing on a deep cavity by adopting a coated inserting-and-milling blade, wherein an S-shaped processing path is adopted, the row spacing S is 0.5 multiplied by the diameter of a blade, the cutting speed V is 30m/min, the radial knifing depth ae is 0.3 multiplied by the diameter of the blade, feed per tooth fZ is 0.08mm/z, and the blade is retracted in an arc manner; performing inserting-and-milling crude processing by adopting the same blade, wherein the S-shaped processing path is adopted, and the adopted row spacing S is 5mm; performing inserting-and-milling essence processing, wherein the S-shaped processing path is adopted, the adopted row spacing is shown as the description, the blade is retracted in the arc manner, and the internal cooling manner is adopted; performing milling-and-cutting processing on the bottom filleted corner of the deep cavity by adopting a round head milling blade; and finally polishing. Through the adoption of the deep cavity processing method disclosed by the invention, the number of the adopted blades during the deep cavity processing is small, the blade changing times and the corresponding assisting time are shortened, the durable degree of the blades is increased, and the processing precision of the deep cavity is guaranteed.

The invention discloses a manufacturing method for an automobile transmission gear, and relates to the field of manufacturing of automobile parts. The method comprises the following steps: (1) blank forging, (2) spheroidizing annealing, (3) turning machining, (4) hobbing, (5) gear shaving, (6) carburization, (7) quenching and tempering and (8) grinding machining. According to the method, spheroidizing annealing treatment is adopted, so that the cutting performance of the gear is improved, a structure with spheroidized or granular carbide uniformly distributed on a ferrite substrate is obtained for preparation for subsequent heat treatment; a gas carburization method is adopted, and volatile kerosene is used as a carburizer, so that carburization effects are effectively improved, the thickness of a carburized layer is increased, the surface of the gear is hard and wear-proof, and high toughness of the core of the gear is maintained; quenching and tempering heat treatment is adopted after carburization, so that the carburization effects are further consolidated, and the mechanical performance of the gear is improved.

The invention provides a construction method for pretreatment of bedrock and/or boulder stratum in a shield tunnel, which comprises the following steps: 1) physical exploration of geological section within the range of a tunnel to be excavated is carried out; the geological section where bedrock and/or boulder exist in the strata to be excavated by a shield machine is identified as bad geologicalsection; 2) the location of a blasting hole within the range of the bad geological section is confirmed and the blasting hole is formed by drilling construction; 3) the blasting hole is loaded with adetonating charge to carry out blasting operations; 4) broken surrounding rock is reinforced by sublevel grouting in the bad geological section after blasting. The construction of the shield tunnel can be carried out smoothly, the construction progress can be speeded up and the frequency of tool-changing can be reduced.

The invention relates to process for blocking accessory of cubic valves and the clump, which both belongs to the field of processing blocking accessory of cubic valves for hydraulic pressure controlling valve. The sets vertical quadrate clump box that has four faces on two revolving workbench of the chief horizontal processing table. Then set the six faces of the cubic valves to the four faces of the clump box. To finish the horizontal process and hole process of the six faces of the cubic valves through the revolving of quadrate clump box and the atomically tool switching of horizontal processing table. Processing, setting up and using of the invention are simple, so it needs only one step and lesser tool switching time to finish the horizontal process and hole process of the six faces of the cubic valves so that to product with high efficiency and high quality.

A cermet cutter material comprises, by mass percentage, 70-90% of TiNC, 4-10% of Cr2C3, 1-2% of MoC2, 4-20% of Ni, and 0.4-1% of Y. A cermet cutter is made from the cermet cutter material. A manufacture method of the cermet cutter comprises: S1, preparing raw materials according to the formula of the cermet cutter material; S2, grinding the raw materials into powder, and drying the powder; S3, adding a forming agent to powder and performing granulation; S4, performing compression moulding to granules to obtain a cutter blank; S5, sintering the blank; and S6, performing coarse grinding, fine grinding and polishing to the sintered product to obtain the cermet cutter. The cutter made from the cermet cutter material is high in hardness, large in fracture toughness and flexure strength, and good in oxidation resistance and durability.

The invention discloses a machining method for a target material. The machining method comprises the following steps: providing the target material, wherein the target material is provided with a surface to be machined; providing a tool, wherein the tool comprises a blade, and a chip discharge groove is formed in the blade; carrying out turning machining on the surface to be machined by adopting the tool to form a sputtering surface, wherein the waste chips generated in the turning process are discharged through the chip discharge groove in the blade. According to the technical scheme of the invention, in the turning process, the generated waste chips can be discharged through the chip discharge groove in the blade; and therefore, the heat generated in the turning process can be timely dissipated, improvement for the heat dissipation capacity of the adopted tool is improved, heat accumulation is reduced, lowering for the temperature of the tool in the turning process is improved, and reduction for the wear of the blade is improved, so that replacement times for the tool is reduced, and increasing for the machining efficiency is improved. In addition, in a machining process for thesputtering surface of the target material, tool setting times after tool replacement can also be reduced due to the reduction of the replacement times for the tool, so that increasing for process efficiency is also improved.

The invention discloses a complex part numerical control technology optimization and adjustment method facing technology reuse. The method is used to solve a technical problem that an existing numerical control technology optimization and adjusting method has low efficiency. In the technical scheme, optimization and adjustment are performed from aspects of cutter processing and a cutting depth. Onthe aspect of cutter processing, a processing cutter combination scheme of a complex characteristic is preferably selected, and partial structure processing cutters are merged and adjusted so as to reduce the number of cutter changing and shorten an empty cutter length. On the aspect of a cutting depth parameter, the cutting depth can be optimized through a reasonable cutting mode, and an optimized processing area can be obtained so as to fully use a cutter processing capability, finally acquire a high-efficient numerical control technology scheme and improve the processing efficiency of complex parts.

The invention discloses a shield machine cutter head with variable cutter spacing, and solves the technical problem that the hob spacing on the existing shield machine cutter head is not variable. Theshield machine cutter head comprises a cutter main beam, wherein a hob assembly is arranged in the cutter main beam, and a compression bolt set for fixing the hob assembly is arranged on the cutter main beam at interval. The invention realizes the function of adjusting the cutter spacing of the hob correspondingly according to the construction geological change through changing the fixing mannerof the hob assembly, and achieves the efficient matching of the cutter spacing arrangement and the construction geology, and can ensure the rock-breaking efficiency of the hob in different geologies,reduces the construction difficulty, speeds up the construction progress, prolongs the cutter life, reduces the number of inspections and cutter change; meanwhile, the construction cost is reduced, the adaptability of the shield cutter is improved, and the long distance, efficient and reliable tunneling of the shield machine is ensured.

The invention discloses an arrangement method of tools on a composite cutterhead of a shield tunneling machine. The composite cutterhead is a panel type cutterhead, and the arrangement method includes the arrangement method of cutters and hobs. The service lives of the cutters and the hobs are calculated equivalently through a formula, the mounting diameters of the cutters and the hobs are adjusted, and the service lives of the cutters and the service lives of the hobs are made to be the same by selecting different materials. The method for calculating the service lives of the tools of the cutterhead of the shield tunneling machine is designed, the abrasion degrees of the tools corresponding to the tunneling distances are calculated, and the tunneling distances of the tools within the service lives are further estimated; the service lives of the hobs and the service lives of the cutters are compared, and are made to be close by changing mounting diameters and increasing or decreasing the number of the cutters and the number of the hobs; and when the tools need to be replaced, the cutters and the hobs are replaced uniformly, the tool replacing frequency is reduced, safety and reliability are achieved, and the labor hour of the shield tunneling machine is guaranteed to a certain extent.

The invention discloses a combined drill molding milling cutter and a manufacturing method thereof. The combined drill molding milling cutter comprises a handle part and a drill body which are both in a cylinder structure, wherein the diameter of the handle part is larger than the diameter of the drill body; the handle part, the drill body and a transition section in a cylinder structure are sequentially and coaxially connected; the diameter of the transition section is smaller than the diameter of the drill body; the transition section, a cone frustum and a drill bit section in a cylinder structure are sequentially and coaxially connected; the lower end of the drill bit section is contracted into a drill bit structure; the diameter of the drill bit section is taken as the diameter of a processed flange rivet hole; an included angle formed by the side of the cone frustum and a central axis is taken as a chamfer of the processed flange rivet hole; the diameter of the drill body serves as the outer diameter of the molding milling cutter; however, the diameter of the transition section is smaller than the inner diameter of the molding milling cutter; the drill bit section, the cone frustum, the transition section and a continuous chip groove in the surface of the drill body are arranged from the peak of the drill bit structure along the axial processing route; a coil type molding milling cutter is arranged on the section of the lower end of the drill body; and the central axis of the molding milling cutter and the central axis of the drill body are overlapped. The processing procedures for the flange rivet hole and a valve seat molding hole are simplified.

The invention relates to a steel wire separating machine which comprises a feeding hopper, a box body, a motor, a rack, a driving belt wheel, a belt, a driven belt wheel, a main shaft, a moving cutter roller, a stationary cutter, a screen bracket and a discharging bin. The box body is an irregular quadrilateral body which can be opened and closed vertically, the feeding hopper is communicated with the upper portion of the box body, the box body and the motor are both arranged on the rack, the driving belt wheel is arranged on the motor, the driven belt wheel is connected with the driving belt wheel through the belt, the driven belt wheel and the main shaft are connected in a key mode, the main shaft is arranged in the box body, the main shaft is sleeved with the moving cutter roller, the stationary cutter is arranged at a vertical port of the box body, the screen bracket is arranged on the lower portion of the box body, a screen is arranged on the screen bracket, and the discharging bin is connected with the screen bracket. The steel wire separating machine has the advantages of being simple and reasonable in structure, convenient to maintain, safe, reliable, and high in separating efficiency.

The invention provides a shield cutter head suitable for a soft and hard composite stratum and a tunneling method. The cutter head comprises a shield cutter head body (1), a cross-shaped main cutter beam (2), an auxiliary cutter beam (3), a center serrated cutter (4), a front hob (5), a cutter (6), an edge hob (7), an edge scraper (8), a fixed serrated cutter (9), a foam nozzle (10), a wear detection cutter (11), a wear-resistant steel plate (12) and other components. The cross-shaped main cutter beam is composed of a first cutter beam, a third cutter beam, a fifth cutter beam and a seventh cutter beam, and the auxiliary cutter beam is composed of a second cutter beam, a fourth cutter beam, a sixth cutter beam and an eighth cutter beam. The method comprises the steps of determining the starting torque of the hobs, selecting and setting the starting torque of the hobs as the starting torque of the hobs of the soft soil stratum, starting a foam system to spray a foam modifier, and pushing a tunneling face rock-soil body forwards by a shield. The opening rate of the cutter head reaches 43%, the cutter head is particularly suitable for tunneling of a typical gravel-argillaceous siltstone composite stratum, and the risk of mud pasting of the cutter head is reduced.

The invention discloses a fixed planting plate soilless culture vegetable harvesting robot and belongs to the field of automatic agricultural equipment. The fixed planting plate soilless culture vegetable harvesting robot comprises a conveying mechanism, a vegetable holding and transferring mechanism, a vegetable root cutting mechanism and a vegetable-plate separation and transportation mechanism,wherein stripy fixed planting plates with mature vegetables are placed on a conveyer belt and are conveyed to the vegetable holding and transferring mechanism through the conveyer belt; vegetables are tightly held by vegetable holding arms and are conveyed forwards at the same time; roots of the vegetables are kept at a suspended state; the root systems of the vegetables are cut off by rotating cutters; the vegetables are moved forwards continuously; the fixed planting plates are dissociated from vegetable main bodies through the vegetable-plate separation and transportation mechanism, are dropped onto a fixed planting plate transferring platform and further slide onto a conveyer belt II; the vegetables are dropped onto a conveyer belt III directly through a vegetable transferring platform. By adopting the robot, harvesting of soilless culture vegetables can be achieved, furthermore procedures that the harvested vegetables are sterilized and packaged, and the stripy fixed planting plates are cleaned, piled and the like can be carried out. The robot is high in harvested vegetable completeness, high in automation degree, low in working intensity of operators and stable and reliablein performance.

The invention relates to a finish machining technology of a stone plastic floor lock catch, and discloses a machining technology of the stone plastic floor lock catch. The technology comprises the steps that step 1, pre-cutting machining, specifically, two milling cutters are arranged to finish the pre-cutting machining on a floor, redundant materials on the outer side of the lock catch are cut off in two steps, and allowance of 0.5mm is reserved on the surface of finishing, forming and finish machining of the lock catch; step 2, finishing machining, specifically, two milling cutters are arranged for finishing, the deviation generated by the floor during the pre-cutting machining is corrected, and a reference surface is machined; step 3, fine machining of the lock catch, specifically, three milling cutters are arranged to mill the lock catch in a concave clamping groove of the lock catch so as to obtain a longitudinal tenon and a tenon groove; and step 4, forming, specifically, three milling cutters are arranged to perform rough machining on the tenon and the tenon groove of the lock catch, and then the fine machining is performed to obtain a transverse tenon and a tenon groove. The technology can effectively reduce cutter changing times and prolong the service life of the cutters, and has the advantages of improving the production efficiency, surface quality, dimensional accuracy and the like.

The invention discloses a batch preparation method of an ultra-nano diamond coated tool with high finish and a complex shape. An HFCVD process is used to deposit a layer of undoped or boron-doped ultra-nano diamond film on the surface of a pretreated complex-shaped cemented carbide tool. The pretreatment method is "surface roughening + surface cobalt removal + uniform crystal planting". The raw materials for the HFCVD process of the undoped ultra-nano diamond film are hydrogen and methane. The HFCVD process of the boron-doped ultra-nano diamond film uses a bubbling method. Hydrogen is used asa carrier to send a mixed liquid of trimethyl borate and acetone to the HFCVD reaction cavity, and the trimethyl borate and acetone are decomposed at high temperature to deposit a layer of boron-dopedultra-nano diamond film on the surface of a tool substrate. The batch preparation method can obtain the undoped or boron-doped ultra-nano diamond film coated tools with extremely high surface finish,extremely low surface roughness, and extremely small friction coefficient, can be applied to precision and ultra-precision cutting processing, and not only can improve the processing accuracy, but extend the service life of the tool.

The present invention discloses a CNC batch processing program optimization method. The method comprises the steps of: A, finding all the tool changing points of each part to be processed, and performing ordering processing according to the same tool in different programs and the processing sequence of different tools; B, determining the fewest number of times of tool changing when each part to beprocessed is processed, allowing the parts to be processed requiring using the same tools to be put in the same processing; and C, integrating processing coordinate systems of the parts to be processed into a single program for usage. The CNC batch processing program optimization method is simple to operate, the operation process does not need human intervention, machine operators can independently complete the optimization process. The method reduces the requirements for front-end programming personnel, can perform secondary optimization and then processing whatever an automatic tool changing machine or a manual tool changing machine, effectively reduce the number of times of tool changing, and improves the product efficiency and the tool life.