58 lines
3.6 KiB
Python
58 lines
3.6 KiB
Python
"""Draw a clearly provisional dimension diagram for the KFL001 plate."""
|
||
from pathlib import Path
|
||
from reportlab.pdfgen import canvas
|
||
from reportlab.lib.pagesizes import landscape,A4
|
||
from reportlab.pdfbase import pdfmetrics
|
||
from reportlab.pdfbase.ttfonts import TTFont
|
||
from reportlab.lib.colors import HexColor
|
||
import pypdfium2
|
||
import math
|
||
|
||
out=Path(r'C:\projects\wheel\models\kfl001_plate_v2')
|
||
pdfmetrics.registerFont(TTFont('Chinese',r'C:\Windows\Fonts\simhei.ttf'))
|
||
p=out/'KFL001固定板_尺寸图.pdf'
|
||
c=canvas.Canvas(str(p),pagesize=landscape(A4));W,H=landscape(A4)
|
||
c.setTitle('KFL001 mounting plate V2 - prototype')
|
||
def txt(x,y,t,size=11,color='#17202a'):
|
||
c.setFillColor(HexColor(color));c.setFont('Chinese',size);c.drawString(x,y,t)
|
||
def ln(x1,y1,x2,y2,col='#444444',width=.7):
|
||
c.setStrokeColor(HexColor(col));c.setLineWidth(width);c.line(x1,y1,x2,y2)
|
||
def tick(x,y):ln(x-3,y-3,x+3,y+3)
|
||
|
||
txt(36,555,'KFL001 固定板尺寸图 V2',23)
|
||
txt(36,532,'试制版：中心孔直径 39，适配直径 38 凸起',13,'#B42318')
|
||
txt(36,512,'两块几何相同；厚 8 mm；下方尺寸单位均为 mm',11)
|
||
k=3.6;x0=110;y0=125;w=76*k;h=75*k;cx=x0+w/2;cy=y0+51*k
|
||
c.setFillColor(HexColor('#eef2f6'));c.setStrokeColor(HexColor('#263444'));c.setLineWidth(1.1)
|
||
path=c.beginPath();path.moveTo(x0,y0);path.lineTo(x0+w,y0)
|
||
for j in range(81):
|
||
x=38-76*j/80; y=15+math.sqrt(60**2-x**2)
|
||
path.lineTo(cx+x*k,y0+y*k)
|
||
path.close();c.drawPath(path,fill=1,stroke=1)
|
||
ln(x0+1.5*k,y0+1.5*k,x0+w-1.5*k,y0+1.5*k,'#8f9ba5',.6)
|
||
inner=[(cx+x*k,y0+(15+math.sqrt(58.5**2-x*x))*k) for x in [36.5-73*j/80 for j in range(81)]]
|
||
for j in range(len(inner)-1):ln(*inner[j],*inner[j+1],'#8f9ba5',.6)
|
||
ln(x0+1.5*k,y0+1.5*k,inner[-1][0],inner[-1][1],'#8f9ba5',.6)
|
||
ln(x0+w-1.5*k,y0+1.5*k,inner[0][0],inner[0][1],'#8f9ba5',.6)
|
||
c.setFillColor(HexColor('#ffffff'));c.setStrokeColor(HexColor('#263444'));c.setLineWidth(1.0)
|
||
c.circle(cx,cy,19.5*k,stroke=1,fill=1)
|
||
for xx in (-24,24):c.circle(cx+xx*k,cy,3.5*k,stroke=1,fill=1)
|
||
for xx in (-23.5,23.5):c.roundRect(cx+(xx-4.75)*k,y0+(9-2.75)*k,9.5*k,5.5*k,2.75*k,stroke=1,fill=1)
|
||
c.setDash(4,3);ln(cx-23*k,cy,cx+23*k,cy,'#858b93',.5);ln(cx,cy-23*k,cx,cy+23*k,'#858b93',.5);c.setDash()
|
||
# Outside dimensions: overall width, height, axis height and KFL bolt pitch.
|
||
for x in (x0,x0+w):ln(x,y0-3,x,y0-31)
|
||
ln(x0,y0-23,x0+w,y0-23);tick(x0,y0-23);tick(x0+w,y0-23);txt(cx-8,y0-19,'76',10)
|
||
for y in (y0,y0+h):ln(x0-2,y,x0-38,y)
|
||
ln(x0-30,y0,x0-30,y0+h);tick(x0-30,y0);tick(x0-30,y0+h);txt(x0-50,y0+h/2,'75',10)
|
||
ln(x0+w+10,y0,x0+w+38,y0);ln(x0+w+10,cy,x0+w+38,cy)
|
||
ln(x0+w+30,y0,x0+w+30,cy);tick(x0+w+30,y0);tick(x0+w+30,cy);txt(x0+w+34,y0+(cy-y0)/2,'51',10)
|
||
by=cy+30*k
|
||
for x in (cx-24*k,cx+24*k):ln(x,cy+4*k,x,by+4)
|
||
ln(cx-24*k,by,cx+24*k,by);tick(cx-24*k,by);tick(cx+24*k,by);txt(cx-8,by+5,'48',10)
|
||
txt(472,454,'孔位说明',15)
|
||
for i,t in enumerate(['1 中心孔：直径 39，适配直径 38 凸起','2 两侧轴承孔：直径 7，孔距 48','3 底部两槽：9.5 × 5.5，横向','4 两槽中心距 47，槽心距底边 9','5 上边圆弧 R60，圆心距底 15','6 外轮廓两面各 1.5 × 45° 倒角','7 中心孔到轴承孔边名义余量仅 1','8 直径 12 垫圈向中心孔悬出约 1.5']):txt(472,424-i*24,t,11,'#B42318' if i in (6,7) else '#17202a')
|
||
ln(472,217,805,217,'#b9c0c9');txt(472,196,'轴承及连接件先试装，',11,'#B42318');txt(472,178,'紧固和动态强度需实物验证。',11,'#B42318')
|
||
txt(36,42,'注：圆孔和长槽均贯穿；两块相同。按孔心尺寸加工，无螺纹。',10)
|
||
c.showPage();c.save()
|
||
doc=pypdfium2.PdfDocument(str(p));page=doc[0];page.render(scale=1.6).to_pil().save(str(out/'KFL001固定板_尺寸图.png'))
|