Square-Thread Hand Screw with Slotted Pressure Plate

import FreeCAD as App import Part import Sketcher doc = App.newDocument("square_thread_screw_gap") # 参数 shaft_r = 6.0 thread_L = 180.0 pitch = 1.0 tooth_w = 0.4 groove_w = 0.6 thread_h = 0.7 plate_D = 42.0 plate_t = 2.0 gap_h = 2.0 # 压板与把手之间2mm镂空 handle_L = 30.0 handle_t = 6.0 # 1. 实心螺杆基体（螺纹段+中间镂空立柱） shaft_total = thread_L + plate_t + gap_h shaft = Part.makeCylinder(shaft_r, shaft_total, App.Vector(0,0,0), App.Vector(0,0,1)) # 2. 螺旋线（只在螺纹段） helix = Part.makeHelix(pitch, thread_L, shaft_r, 0, 0, False) # 3. 方牙截面矩形，向内切削 rect = Part.makeBox(tooth_w, thread_h, 1.0) rect.Placement = App.Placement(App.Vector(-tooth_w/2, shaft_r-thread_h, 0), App.Rotation()) cut_shape = Part.makeSweepSurface(helix, rect) shaft = shaft.cut(cut_shape) # 4. 压板（Z:180~182） plate = Part.makeCylinder(plate_D/2, plate_t, App.Vector(0,0,thread_L), App.Vector(0,0,1)) # ========== 改动：腰圆把手X投影区域镂空，X向外延伸到压板左右边缘，Y匹配把手投影，保护中心螺杆 ========== r_h = shaft_r plate_R = plate_D / 2 # X：压板左右外缘（±plate_R）；Y：腰圆把手本身Y向范围 ±r_h cut_plate_box = Part.makeBox( plate_R * 2, r_h * 2, plate_t, App.Vector(-plate_R, -r_h, thread_L) ) # 保护圆柱，中心螺杆区域保留不被切掉 protect_cyl_plate = Part.makeCylinder(shaft_r, plate_t, App.Vector(0,0,thread_L), App.Vector(0,0,1)) cut_plate_tool = cut_plate_box.cut(protect_cyl_plate) plate = plate.cut(cut_plate_tool) # ============================================================================================= shaft = shaft.fuse(plate) # 5. 腰圆手拧头，放在镂空立柱顶端（Z:182+2=184起，厚6mm） handle_z = thread_L + plate_t + gap_h wire1 = Part.makeCircle(r_h, App.Vector(-(handle_L/2 - r_h),0, handle_z)) wire2 = Part.makeCircle(r_h, App.Vector(handle_L/2 - r_h,0, handle_z)) line1 = Part.makeLine(App.Vector(-(handle_L/2 - r_h), -r_h, handle_z), App.Vector(handle_L/2 - r_h, -r_h, handle_z)) line2 = Part.makeLine(App.Vector(-(handle_L/2 - r_h), r_h, handle_z), App.Vector(handle_L/2 - r_h, r_h, handle_z)) wire = Part.Wire([wire1,line2,wire2,line1]) face = Part.Face(wire) handle = face.extrude(App.Vector(0,0,handle_t)) shaft = shaft.fuse(handle) # 加入文档 obj = doc.addObject("Part::Feature","HandScrew_2mmGap_Plate_XProjSlot") obj.Shape = shaft doc.recompute() print("✅ 完成：压板开槽为腰圆把手X投影，X打通压板左右边缘，Y为把手投影宽度，中心螺杆完好，把手实心不变")

Parameters

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