UAV

Invech Precision Co.,Ltd with many UAV case,it reflected in the Partner that engaged in UAV & Manned Helicopter and Multi rotor Designs, Advanced Aircraft have over 30 years extensive experience. The technical director was the founder of three different companies from start up to full-production, while establishing all the separate departments, fabrication procedures, manufacturing-lines and training of the personnel in their respective jobs. 

From 2015 , we have start the first cooperation. The unique low cost, low loss,zero casualties, high efficiency, easy control, and reusable high maneuverability of the UAV have many advantages. Its use has been extended to three major fields of military, civilian, and scientific research, and will soon lead the tradition. Changes and innovations in the industry’s operating model. The UAV industry has extensive market space and development potential in military, civilian, consumer and other fields. In the next ten years, the civilian drone industry will enter a golden development period. This new blue ocean of billions of grades is about to usher in a wave of industrialization. With the rapid development of technology and the innovation of business model sin the Internet era, drones have become the most promising now, One of the fastest growing industries, the company will usher in an era of drone outbreak.

UAV

Example.Sleeve

skills requirement

1.Material: 45 steel.     2.The acute angle is blunt.     3.All chamfering C1.

1.Part drawing analysis

1) The part material is 45 steel.

2) Taking the centerline of the inner hole of ϕ140H6 as the reference, the coaxiality tolerance of the outer circle of ϕ147g6 and the reference is ϕ0.04mm.

3) Left and right ϕ140H6 inner hole coaxiality tolerance is ϕ0. 01mm.

2.Process analysis

1) This part is long and thin. In order to ensure the coaxiality of the inner and outer circles, when machining the outer circle of ϕ147g6 and ϕ169S7, the outer circle is machined by the clamping method of clamping the mandrel with nut. To process the inner hole of ϕ140H6, one end is usually used, and the outer circle is supported by the center frame at the other end.

2) ϕ140H6 The surface quality of the inner hole is required to be high. When grinding, a suitable grinding wheel and cutting should be selected.

Sleeve machining process (unit: mm)

Part NameBlank speciesMaterialProduction type
SleeveForging45 # steelSmall batch
ProcessWork stepProcess contentEquipmentTools, measuring tools, auxiliary tools
10Forging
20NormalizingBox furnace
30Rough turningCNC lathe
1Use a self-centering chuck to clamp one end of the outer circle of the blank, align, clamp, and turn the end face.80° turning tool
2Turning ϕ176 outer circle to ϕ17980° turning tool
3Adjust the direction of the parts; use the self-centering chuck clamp ϕ176 outer circle, align and clamp; turn the end face to ensure the total length 36680° turning tool
4Drill a center hole on the right endCenter drill
5Use self-centering chuck to clamp ϕ176 outer circle, top center hole, turning ϕ169s7 outer circle to ϕ17280° turning tool
6Turning ϕ147g6 outer circle to ϕ17280° turning tool
7Use self-centering chuck to clamp the outer circle of ϕ176, the center frame supports the outer circle of ϕ169s7, and bore the inner hole to ϕ135Boring tool
40Fine turningCNC lathe
1Use a self-centering chuck to clamp the outer circle of the right end, the center frame supports the outer circle of ϕ169s7, turning the left end face35° turning tool
2Turning ϕ176 outer circle, surface roughness Ra3. 2μm35° turning tool
3Adjust the direction, clamp the outer circle of ϕ176, the center frame supports the outer circle of ϕ169s7, align it, turn the right end face, leave a grinding allowance of 0.10, and ensure a total length of 361.1035° turning tool
4Turning ϕ147g6 outer circle, leaving grinding allowance 0.5035° turning tool
5Turning 3 × 0.5 empty slot, surface roughness Ra3. 2μmGrooving knife
6Turning R <0.2%Arc knife
7Turning external circle 3 × 15° chamfer done35° turning tool
8Clamp ϕ147g6 outer circle, the center frame supports the ϕ169s7 outer circle, align it, and finely boring the left ϕ140H6 inner hole, leaving a grinding allowance of 0.50Fine Boring Tool
9Turn around. Clamp ϕ176 outer circle, the center frame supports the ϕ169s7 outer circle, align it, and finely boring the right end ϕ140H6 inner hole, leaving a grinding allowance of 0.50Fine Boring Tool
10Boring ϕ142 inner hole, surface roughness Ra3. 2μmFine Boring Tool
11Turning inside and outside round chamfer C135° turning tool
50The right end surface is flat ground, surface roughness Ra1. 6μmFlat grinding machine
60Grind the outer circleCylindrical grinder
1Install the nut to compress the mandrel, ground ϕ169 s7 outer circle, surface roughness Ra0. 8μm
2Grinding ϕ147g6 outer circle, surface roughness Ra0. 8μm
70Grind the inner holeInternal grinding machine
1Clamp ϕ176 outer circle, the center frame supports the ϕ169 s7 outer circle, and align it to 0.005 on the ground outer circle, grind the left end ϕ140 H6 into the inner hole, the surface roughness Ra0. 8 μm
2Grinding the right end ϕ140H6 inner hole, surface roughness Ra0. 8μm
80Inspect ϕ140H6 inner hole, ϕ169s7 outer circle, ϕ147g6 outer circle size, geometric tolerance and surface roughnessInspection station
90Oiling, packaging, warehousingWarehouse
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