11results about How to "Guarantee processing safety" patented technology

The utility model relates to the technical field of numerical control machine tool workpiece feeding and discharging, and discloses a numerical control machine tool workpiece feeding and discharging device which comprises a supporting frame, a lifting motor, a bearing device and a pushing device. A bearing device is arranged in the supporting frame and correspondingly connected with the interior of the supporting frame in a sliding fit mode, a pushing device is arranged at the top of the bearing device and fixedly connected with the top of the bearing device through an adaptive screw, and a bottom output shaft of the lifting motor is correspondingly connected with the bearing device in a threaded fit mode. The loading and unloading device is internally provided with the bearing device and the pushing device which cooperate with each other, so that the loading and unloading speed of large workpieces can be greatly improved, manual carrying is reduced, and the safety of the whole operation process is greatly improved.

The invention relates to a magnesium-based hydrogen storage material and a preparation method thereof, and belongs to the technical field of hydrogen storage alloy materials and preparation thereof. The hydrogen storage material is an Mg-5Ni alloy with Sm powder uniformly distributed on the surface layer and an amorphous / nanocrystalline structure in the interior. The Sm powder is wrapped by the surface layer of the Mg-5Ni alloy to form composite powder of a core-shell structure; the hydrogen storage material is prepared from Mg-5Ni alloy powder and Sm powder as raw materials, and the raw materials are mixed and then subjected to dry ball milling. The hydrogen absorption and desorption kinetics of the existing magnesium-based hydrogen storage material can be effectively improved, the hydrogen desorption activation energy of the magnesium-based hydrogen storage material is reduced, and the problem that a solid additive is difficult to uniformly distribute on the surface is solved.

The invention discloses an electric spark machining anomaly classification and recognition method and system, and relates to the technical field of machining anomaly recognition, and the method comprises the following steps: segmenting a continuous signal to obtain discrete signal segments, carrying out the signal extraction of the discrete signal segments to obtain feature data, forming a multi-dimensional feature vector according to the feature data, and carrying out the classification and recognition of machining anomaly. Inputting the multi-dimensional feature vector into a multi-granularity anomaly classifier, outputting coarse-granularity candidate category probability distribution and fine-granularity candidate category probability distribution, and performing calculation based on the coarse-granularity candidate category probability distribution and the fine-granularity candidate category probability distribution to obtain a preliminary anomaly recognition result of the time window; and based on the preliminary anomaly identification result of e time windows, a multi-window verification and state maintenance mechanism is adopted, and a final anomaly category is output, so that the whole process optimization of processing anomaly from rapid early warning and fine classification to reliable decision making is realized, the false alarm and missing report rate is reduced, the system robustness is improved, and the processing safety and quality are finally guaranteed.

The utility model discloses automatic drilling equipment for hardware parts, which relates to the technical field of drilling equipment and comprises a drilling machine, a first support is fixedly mounted on a base of the drilling machine, and a rotating roller is rotatably mounted at the upper end of the first support through a bearing seat and a rotating shaft. An arc groove is formed in the portion, above the rotating roller, of the curved wall in the length direction of the rotating roller, an abutting block is fixedly installed on a fixing sleeve of the drilling machine, a groove is formed in the middle of the side, close to the rotating roller, of the abutting block, the rotating roller is located on the inner side of the groove, and a servo motor is fixedly installed on one side of the first support. An output shaft of the servo motor is fixedly connected with the rotating roller through a coupler; through cooperative operation of the servo motor, the electric telescopic rod and other components, automation of the whole process of feeding, positioning, clamping, punching and discharging of the cylindrical hardware parts is achieved; manual frequent intervention is not needed, labor intensity is effectively reduced, labor cost is reduced, and production efficiency is remarkably improved.

The utility model relates to the technical field of superhard cutting tools, and discloses a PCBN tool assembly which comprises a boring tool bar and a boring tool handle detachably installed at the bottom end of the boring tool bar, an installation base is installed at one end of the boring tool bar, a tool body is installed in the installation base, an installation mechanism is arranged in the tool body, and the installation mechanism is connected with the boring tool bar. According to the utility model, the mounting mechanisms are arranged, the mounting mechanisms are matched with each other, and an axial and circumferential double-locking structure is adopted, so that the clamping stability of the tool main body can be obviously improved, and the loosening caused by cutting vibration is avoided; the boring machining precision and the cutting safety are guaranteed, the double locking is matched with the transmission self-locking structure, the cutter body is effectively prevented from moving and deflecting, the connection rigidity is improved, heavy-load intermittent cutting is adapted, and the service life of the PCBN cutter is prolonged.

The invention provides a control system and method for PCB numerical control drilling, and the method comprises the steps: determining the feeding section speed of a numerical control machine tool through the rotating speed of a main shaft of the numerical control machine tool and the feeding amount per revolution, and determining the safety switching height of the surface drilling speed switching of a target PCB according to the inertia braking distance and the safety margin of the high-speed section speed of the numerical control machine tool; after the Z-axis driving mechanism is controlled to descend to the safe switching height at the high-speed section speed, the Z-axis driving mechanism is switched to the feeding section speed to complete drilling feeding, and the drilling return speed coefficient of the Z-axis driving mechanism is determined based on the drilling depth information of the Z-axis driving mechanism and the plate parameters; determining a rollback section speed of lifting to the safe height according to the rollback speed coefficient, the high-speed section speed and the feeding section speed; and after the drilled hole reaches the preset hole position depth of the target PCB, the Z-axis driving mechanism is controlled to lift the main shaft to the safe height at the speed of the rollback section. Based on the scheme, safe switching of the three-stage speeds of the main shaft and the Z shaft in PCB numerical control drilling can be achieved.

The invention provides hydrogen peroxide-resistant ethylene propylene diene monomer and a preparation method thereof. The hydrogen peroxide-resistant ethylene propylene diene monomer is prepared from the following components in parts by weight: 70 to 90 parts of raw ethylene propylene diene monomer, 10 to 30 parts of fluorosilicone modified material, 40 to 80 parts of reinforcing filler, 3 to 8 parts of vulcanizing activator, 0.5 to 2 parts of lubricant, 4 to 8 parts of peroxide vulcanizing agent and 1 to 4 parts of assistant crosslinking agent, the preparation method of the hydrogen peroxide-resistant ethylene propylene diene monomer rubber adopts a two-stage mixing process, the first-stage mixing is that EPDM raw rubber is plastified firstly, then components except a vulcanization system are added step by step to be mixed uniformly, the second-stage mixing is that a vulcanizing agent and an assistant cross-linking agent are added at a low temperature (less than or equal to 70 DEG C) after the rubber material is cooled to be mixed quickly and uniformly to avoid scorching, and finally vulcanization molding is performed. According to the material, through the synergistic effect of a fluorosilicone modified material and a peroxide vulcanization system, the hydrogen peroxide resistance is remarkably improved, and the material is soaked in HO with the solubility of 90% gt; after 12 hours, the volume change rate is lt; the tensile strength retention rate is gt; 90%.

This invention relates to the field of magnesium alloy production technology, and in particular to a polishing apparatus for magnesium alloy production. It includes a polishing cabinet, a mounting frame, a aligning assembly, a heat-absorbing assembly, and a clamping assembly. The mounting frame is fixedly disposed inside the polishing cabinet. A sliding frame is horizontally mounted on the mounting frame. The aligning assembly is slidably mounted on the sliding frame, and a hydraulic cylinder is disposed between the aligning assembly and the sliding frame. The heat-absorbing assembly is fixedly disposed at the rear end of the aligning assembly and includes a mounting shell. A partition plate is fixedly disposed inside the mounting shell, and the lower end of the partition plate is a water-containing cavity. Several heat-conducting rods are vertically slidably disposed inside the mounting shell, with one end of each heat-conducting rod penetrating the top of the mounting shell and contacting the magnesium alloy. This invention achieves cooling of the magnesium alloy sheet during polishing by transferring heat generated by the magnesium alloy sheet through multiple sets of heat-conducting rods. The water-containing cavity contains water, which cools and absorbs heat from the lower ends of the heat-conducting rods, thereby reducing heat accumulation and lowering the risk of thermal combustion of the magnesium alloy during polishing.

The invention discloses a control method and device for square box jointed boards in a horizontal machining center. The method comprises the following steps: determining a shielding state of a first jointed board surface according to a jointed board macro variable value of a square box in the horizontal machining center; when the shielding state shows that the first jointed board surface is shielded, the jointed board macro variable value is updated so as to machine a second jointed board surface which is adjacent to the first jointed board surface and is not subjected to machining operation; when the shielding state shows that the first splicing plate surface is not shielded, a main shaft of the horizontal machining center is controlled to rotate to the first splicing plate surface so as to machine the first splicing plate surface; when it is determined that the jointed board macro-variable value reaches the total value of the jointed board number, a tool changing process is started; and the steps are repeatedly executed until all the available cutters complete the specified machining tasks. The technical problem that the machining efficiency and flexibility of the four-axis horizontal machining center are limited due to the fact that tool changing is frequent in a square box control mode in the related technology is solved.

The utility model discloses a kind of auxiliary processing frock of grooved shell, the left and right ends of base are symmetrically provided with side groove, screw rod is rotatably installed in two groups of side groove, the lower end of two groups of screw rod is fixedly installed with synchronous wheel, synchronous belt is sleeved on two groups of synchronous wheel, lifting frame is threadedly sleeved on two groups of screw rod, the upper end of two groups of lifting frame is provided with overturning assembly, and multiple groups of fixed components are provided on overturning assembly;The utility model guarantees the stability and accuracy of grooved shell in overturning process by the design of overturning assembly, avoids the positioning error possibly generated when reinstallation positioning, to ensure the machining precision, reduce production cost, and the fixed component on frock can firmly fix grooved shell, prevent it from moving or shaking in processing process, further ensure processing quality and safety.

The utility model relates to the technical field of terpineol production equipment, especially to a high purity terpineol dehydration device, its technical scheme includes: reaction subassembly and distillation subassembly, is provided with intelligent reflux ratio controller on the reflux pipe, is provided with the phase separation subassembly on the stable base, the phase separation subassembly includes the phase separator, is provided with coalescence filler in the phase separator, is provided with the condensation assembly on the stable base and the side above phase separator, the condensation assembly includes the condenser, the utility model discloses through the setting of reaction subassembly and distillation subassembly coordinated operation has improved the efficiency, selectivity and stability of reaction process significantly, has improved the controllability, stability and separation efficiency of separation process significantly, through the setting of phase separation subassembly and condensation assembly can realize the efficient condensation of gas phase component, guarantees the material balance of distillation subassembly, can control distillation operation pressure simultaneously, guarantees the process stability and security, promotes the efficient operation of subsequent separation process.