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Novel silicon resonance accelerometer structure based on lever difference
PendingCN119470970Areduce thermal stressGuaranteed support rigidityNavigation by speed/acceleration measurementsAcceleration measurementThermal dilatationAccelerometer
The invention belongs to the technical field of precision sensors, and discloses a novel silicon resonance accelerometer structure based on lever difference. The structure comprises an upper layer, a middle layer and a lower layer, the middle layer is a monocrystalline silicon micro-mechanical structure and comprises a mass block, an amplification lever structure, a double-end fixed tuning fork type resonator and the like; through a central anchor point and two amplification lever structures with opposite force transmission directions, the stress difference of the two resonators is realized, the number of supporting anchor points is reduced, the resonators are in a thermal expansion free state under a temperature change working condition, the thermal stress influence is reduced, and the temperature performance is improved; meanwhile, the area of the stress isolation frame is reduced, the difficulty of the processing technology is reduced, and the engineering application of the silicon resonance accelerometer to an ultra-precise system is promoted.
Owner:HUNAN UNIV
Cobalt removal device for polycrystalline diamond compact and cobalt removal method applying cobalt removal device
The invention belongs to the field of polycrystalline diamond compact production, and particularly relates to a polycrystalline diamond compact cobalt removal device and a cobalt removal method applying the device.The polycrystalline diamond compact cobalt removal device comprises a soaking box, a support is fixedly connected to the top of the soaking box, a top plate is fixedly connected to the top of the support, and a motor is fixedly connected to the top of the top plate; the output end of the motor penetrates through the top plate and is fixedly connected with a reciprocating screw rod; according to the cobalt removal device for the polycrystalline diamond compact and the cobalt removal method applying the cobalt removal device, when the polycrystalline diamond compact is soaked in cobalt removal liquid, a reciprocating lead screw is controlled to rotate clockwise, a sliding block rotates along with clockwise rotation of the reciprocating lead screw, a placing table is driven to rotate, the polycrystalline diamond compact rotates in the cobalt removal liquid, and the cobalt removal effect is achieved. By continuously rotating the polycrystalline diamond compact, bubbles generated by chemical reaction outside the polycrystalline diamond compact can be separated from the polycrystalline diamond compact, and the cobalt removal effect of the polycrystalline diamond compact is prevented from being affected by blocking of the bubbles.
Owner:HENAN JINGYAN INTELLIGENT MFG TECH CO LTD
Sawing and milling integrated equipment
ActiveCN119550075Areduce loadeasy dischargeWork clamping meansOther manufacturing equipments/toolsSingle supportMilling cutter
The invention discloses sawing and milling machining integrated equipment, and relates to the technical field of machining machine tools. The sawing and milling machining integrated equipment comprises a machine body, a movable platform and a machine head, a sawing and milling cutter is installed on the side, close to the machine body, of the machine head, and the sawing and milling machining integrated equipment further comprises a base plate fixedly installed on the machine head and close to the lower end of the sawing and milling cutter; the plurality of supporting frame bodies are arranged, and the supporting frame bodies synchronously move along with the head; and the multiple supporting balls are installed in the supporting frame, the top ends of the supporting balls are higher than the upper surface of the movable platform so as to support the to-be-machined object, and the single supporting ball can elastically move in the vertical direction so as to adjust the supporting force of the to-be-machined object. Through the arrangement of the supporting frame body and the elastically-installed supporting ball, when the elastic plate moves downwards under the pressure of the supporting ball, supporting force is exerted on the to-be-machined object through the elastic moving joint of the supporting ball, the extending end is supported, and the extending end is prevented from being in a suspended state.
Owner:HEYI (SHANDONG) CNC MACHINERY CO LTD
Automotive parts glue application and positioning device
This utility model discloses a positioning device for gluing automotive parts, comprising: a support base, a positioning and flipping frame, and a flipping drive device. The rotatable positioning and flipping frame is mounted on the support base, and the flipping drive device is also mounted on the support base. The output end of the flipping drive device is connected to the positioning and flipping frame, and the flipping drive device is used to drive the positioning and flipping frame to flip. The positioning and flipping frame includes: a flipping rod, a first side positioning block, a support mechanism, and a second side pressing mechanism. The flipping rod is rotatably connected to the support base, and the first side positioning block is fixed on the flipping rod. The first side positioning block is in close contact with the first vertical surface of the automotive part to be glued. The support mechanism supports the first glued surface of the automotive part using a point support method. This positioning device for gluing automotive parts solves the problem in the prior art where the flipping mechanism obstructs the automotive parts excessively, resulting in many areas of the first and second glued surfaces not being glued.
Owner:CHONGQING JIEQING MASCH CO LTD
Vacuum heat treatment tool for precision mold machining
ActiveCN224091939UGuaranteed stabilityImprove heat treatment effectFurnace typesHeat treatment furnacesMechanical engineeringHeat treating
The utility model discloses a precision mold processing vacuum heat treatment tool which comprises a main body mechanism, the main body mechanism comprises a placing frame, a plurality of H-shaped partition plates embedded in the placing frame, transverse plates symmetrically fixed to the bottom ends of the H-shaped partition plates and sleeves symmetrically fixed to the two sides of the H-shaped partition plates, and the placing frame is used for placing a mold needing vacuum heat treatment; the placing frame comprises two opposite L-shaped side plates, a bottom plate connected with the opposite L-shaped side plates and a cross rod connected with the opposite L-shaped side plates, the two opposite L-shaped side plates, the bottom plate and the cross rod form a frame body, a mold needing to be subjected to heat treatment can be placed in the frame body, the multiple H-shaped partition plates are vertically placed in the placing frame, adjacent molds can be separated, collision between the adjacent molds is avoided, and the heat treatment efficiency is improved. The vacuum heat treatment tool for precision mold machining has the advantages that the mold heat treatment effect is improved, and the practicability is high.
Owner:HANGZHOU YONGCHENG MASCH CO LTD