1、 Core performance comparison matrix comparison dimension Multi functional flat wire drawing machine Manual wire drawing technology Differential machining accuracy (μ m) Ra0.4-3.2 (controllable ± 0.1 μ m) Ra1.6-6.3 (fluctuation ± 1.5 μ m) 3-5 times consistency Texture direction angle deviation<2 ° (laser positioning) Visible direction difference (dependent on technician feel) Non quantifiable Maximum processing width 2500mm (CNC beam type) Usually<600mm (limited by arm span) 4 times speed (m ²/h) 8-15 ㎡ (automatic feeding) 0.3-0.8 ㎡ (skilled worker) 20 times depth control 0.01-0.5mm (servo motor ± 0.005mm) Only visual judgment Digital rolling can be made 2.

Depth analysis of process capability 1 Mechanical wire drawing for complex surface processing: requires customized copying fixtures (cost ¥ 500-2000/set) with a minimum curvature radius of R5mm (special flexible sand belt).

Manual wire drawing: can handle R2mm micro curvature (such as watch cases), but the transition of the surface is prone to "wire jumping" defects Special effects to achieve sun patterns/random patterns: Mechanical: requires replacement of different grit sand belt combinations (# 180+# 400 cross processing) Manual: achieved directly by changing the wrist swing trajectory (experience dependent) 3 Material adaptability, material types, mechanical drawing advantages, scenarios where manual drawing is irreplaceable, scenarios where superhard alloys can be loaded with diamond sand belts (HRC>60) that cannot handle 0.3mm ultra-thin plates require vacuum adsorption tables (prone to deformation), manual backing is more flexible, mirror stainless steel can be connected to polishing modules (Ra<0.1 μ m), and local repairs are more accurate.

III.

Economic comparison (based on an annual output of 50000 pieces), cost structure dismantling project, mechanical drawing, manual drawing equipment investment of 150000 to 500000 yuan (domestic/imported), tool cost of less than 5000 yuan, labor cost of 1 person monitoring (80000 yuan/year), 6 technicians (480000 yuan/year), consumables wear and tear, sand belt of 120 yuan/meter (service life of 80 hours), sandpaper of 5 yuan/sheet (service life of 15 minutes), defect rate.<2% (automatic detection) 8-15% (visual leak detection) Unit cost ¥ 3-8 ¥ 12-25 Investment return calculation Mechanical plan: 2-3 years cost recovery (calculated based on a two shift system) Manual plan: Continuous high variable cost 4.

Special scenario decisive point selection Mechanical drawing When: Batch processing>100 pieces/day Customer requirements provide CPK>1.33 process report Material hardness>HRC40 Continuous processing Persists in manual drawing When: Cultural relic restoration/art creation (requires emotional texture) Small space trial production stage that on-site equipment cannot enter (modification cost

Future integration trend Human machine collaboration mode: Mechanical completion of 90% benchmark processing, manual finishing of the last 10% (such as high-end car interior trim) Intelligent compensation technology: Automatic generation of mechanical processing program through 3D scanning of manual samples (error compensation)<0.05 Mm) Ultimate suggestion: In the era of mass production, choose machinery - this is the inevitable choice of industrial civilization.

Art creation should choose handicrafts - this is the last fortress of craftsmanship spirit