31results about How to "Control thermal deformation" patented technology

The present invention relates to a lead cutter and a method of cutting lead. Specifically, there is provided a lead cutter that enables micro-adjusting a cutting clearance between a punch and a die with high accuracy. The lead cutter includes a die on which the lead provided in an encapsulating resin enclosing a semiconductor chip is to be placed, a punch that vertically moves relative to the die to thereby cut the lead, and a temperature controller that controls a temperature of at least one of the punch and the die, so as to adjust a clearance between the punch and the die.

The invention discloses a high-temperature vacuum furnace heating chamber. The high-temperature vacuum furnace heating chamber comprises a cylindrical stainless steel outer shell, an upper thermal insulation screen, a side thermal insulation screen and a lower insulation screen, wherein the upper thermal insulation screen, the side thermal insulation screen and the lower insulation screen are arranged in the outer shell; a plurality of lead-out notches used for positioning a heater are formed in the side wall of the outer shell and the side thermal insulation screen; through-feeding openings are formed in the bottom of the outer shell and the lower thermal insulation screen; a moveable stainless steel plate is arranged in the feeding openings; the moveable stainless steel plate is provided with a moveable thermal insulation screen; a material-placing seat is arranged on the moveable thermal insulation screen; each thermal insulation screen comprises a plurality of thermal insulation single layers; the thermal insulation single layers respectively are a tungsten thermal insulation piece, a high temperature molybdenum thermal insulation piece and a molybdenum thermal insulation piece; cushion blocks are respectively arranged among the thermal insulation pieces; and the thermal insulation pieces are integrally connected by a tungsten pull rod and are fixed on the outer shell through an insulating ceramic ring at the end of the tungsten pull rod. The high-temperature vacuum furnace heating chamber is suitable for a high-temperature high vacuum environment, has small deformation after the temperature being raised, and has convenient use and long service life.

A high-efficiency laser deep penetration welding method for achieving double-side forming of sheet metal through single-side welding is characterized in that a reflection cushion plate is added on the back of the laser welding sheet metal to utilize the reflection cushion plate to reflect instantaneous laser of laser full penetration sheet metal back to a welding area to conduct secondary heating on the welding area to further achieve a double-side forming hourglass-shaped (X-shaped) welding seam through single-side welding. The method is mainly composed of steps of cleaning the surface to be welded, fixing the reflection cushion plate, conducting laser welding on the sheet metal and the like. The method achieves the aim that the single-side welding is conducted on the sheet metal to achieve double-side forming under the low heat input condition, breaks through the defect that the existing sheet laser deep penetration welding can obtain the hourglass-shaped (X-shaped) welding seam only under the high heat input condition, achieves double effects of considering welding seam dynamic performance and controlling heat deformation and heat effects of the sheet and lays a foundation for promotion of wide application of a laser deep penetration welding technology in the sheet metal welding field.

The invention discloses a roots blower impeller. The roots blower impeller is of a central symmetry structure. An impeller shaft sleeve hole is formed in the center of the roots blower impeller, multiple impeller blades are arranged in the circumferential direction of the impeller shaft sleeve hole, each of the impeller blades is provided with a balance hole, and the balance holes are stepped cylindrical holes which are formed by alternately stacking of large cross-sectional columnar holes and small cross-sectional columnar holes in the axial direction. The roots blower impeller has the advantages of the improved balance hole structure and control over the amount of thermal deformation of the impeller.

The invention discloses a method for processing a transformer pulling plate magnet isolation tank, comprising the following processing steps: first, drilling technology holes with diameter being equal to the diameter to the tank width of the magnet isolation tank at the two ends of the X direction of the length of the pulling plate body; aligning the technology holes at one end of the X directionof the length of the pulling plate body with a nozzle of a flame cutting torch along the Y direction of the width of the pulling plate body, a cooling water pipe is arranged along the X direction andat the same line the flame cutting torch is located; the flame cutting torch and the cooling water pipe are connected with a moveable cart at one side of the Y direction of the width of the pulling plate body with two mutually parallel arms; the flame cutting torch is stated to facilitate the moveable cart move along the X direction at a speed of 300-500mm / min towards the technology holes at the other end of the X direction; meanwhile, the cooling water pipe is opened to continuously inject water forward along the movement direction of the flame cutting torch; when the flame cutting torch moves to the technology holes at the other end of the pulling plate; the technology holes at the end is aligned with the nozzle of the flame cutting torch along the outside of the Y direction to facilitate the moveable cart to move in the opposite direction until the cart returns to the previous technology holes.

The scanning optical device (6) includes a light source, a deflector (30) configured to rotate on a horizontal surface around a rotating shaft extending in a vertical direction and an optical box (50) in which the light source, the deflector (30), and the optical components groups (40) are housed and supported by the frame (60). A heat sink (36) is disposed between the deflector (30) and the frame (60). A first protrusion (37) extending on an extension line of the rotating shaft of the deflector (30) is formed in the heat sink (36). A first engaging hole (61) with which the first protrusion (37) engages is formed in the frame (60).

In an electrical connecting apparatus, a thermal deformation restriction member, a reinforcing plate, and an auxiliary member are made of materials having smaller thermal expansion coefficients in this order, and a wiring board supporting a probe assembly is coupled with the reinforcing plate. The auxiliary member has a void inside the coupling region with the reinforcing plate. The void receives the deformed part when the center portion of the wiring board is deformed toward the reinforcing plate. Thus, the thermal deformation restriction member, the reinforcing plate, and the auxiliary member function as a three-layer bimetal having a sandwich structure, and the thermal deformation of the wiring board is restricted effectively.

The invention provides a cooling device of a built-in motor of a motorized spindle and a dicing machine. The cooling device comprises a cooling liquid providing part which is used for providing cooling liquid and a cooling liquid passage which is used for inputting the cooling liquid which is provided by the cooling liquid providing part and controlling the flow direction of the cooling liquid. The cooling device of the built-in motor of the motorized spindle and the dicing machine can stably cool the motor of the spindle when the motorized spindle is working.

The invention discloses a thermal deformation control device of a multiple-degree-of-freedom spatial structure in a brazing high-temperature environment. The thermal deformation control device comprises a base, locating blocks, locating forcing screws, connecting screws and an auxiliary profiling press block. Peripheral equipment comprises a guide device to be welded and a startup spraying pipe tobe welded. The guide device is fixed to the base after angular locating is conducted on the guide device. The locating blocks are fixedly connected to the base through the connecting screws. The locating forcing screws pass through threaded through holes formed in the locating blocks, point to the direction of thermal deformation of the startup spraying pipe and tightly press the auxiliary profiling press block on the surface of the startup spraying pipe. The pressing force is applied in the normal directions of the excircle surfaces, close to matched portions, of two branch-shaped pipe portions of a workpiece through the locating forcing screws and the auxiliary profiling press block, and therefore the purpose of controlling thermal deformation is achieved. By the adoption of the thermaldeformation control device of the multiple-degree-of-freedom spatial structure, the phenomenon that due to thermal deformation, the gap of a brazing seam is enlarged in the high-temperature environment is avoided, then the phenomenon that the incomplete-penetration defect exists is avoided, and the brazing quality is substantially improved.

The invention discloses a linear groove and transition groove cutter device comprising a stand, wherein the stand is provided with a rack rod fixedly provided with a center cutting torch link span; two sides of the center cutting torch link span are respectively provided with a left moving body and a right moving body, wherein the left moving body is connected with a left handwheel meshed with the rack rod; the right moving body is connected with the right handwheel meshed with the rack rod; and the left moving body is provided with a left cutting torch clamp holder, and the right moving body is provided with a right cutting torch clamp holder. The linear groove and transition groove cutter device also comprises a transition moving body connected with a transition handwheel meshed with the rack rod; and the transition moving body is provided with a transition cutting torch clamp holder provided with a transition cutting torch. The whole cutter device has the advantages of compact structure and convenience for operation. The device can simultaneously cut a linear groove and a transition groove, thereby greatly improving cutting production efficiency, and lowering labor intensity. In addition, the cutting precision and the surface quality of workpieces are high, which can satisfy the process requirements of automatic welding, without subsequent processing.