1. drawing paper placement: place drawing paper flat on the cutting machine, with trouser legs on the left hand side and waistband on the right hand side.
2. Drawing posture: stand in front of the cutting table, bend slightly, push the ruler with your left hand and hold the pen with your right hand. When drawing lines, keep the pen and ruler still.
(2) making the front pants model:
1, process flow:
① Basic line (trousers long line) → ② Lower flat line (foot line) → ③ Upper flat line (waist line) → ④ Cross crotch line → ⑤ Hip girth line →⑤Middle crotch line (knee girth line) →⑤Hip girth line (front crotch line) →⑧Small crotch width (front crotch line) →⑨Base point of cross crotch line →⑩crotch folding.
2. Key points of the process:
(1), master the correct drawing steps, and draw auxiliary horizontal lines perpendicular to the paper edge in steps ① ~ ⑤.
(2) When drawing the center line of trousers, first draw 0.6cm from the crotch side seam, and then take the midpoint as the center line of trousers.
(3) The size of the ankle and crotch should be based on the center line of the trousers, and they should be symmetrical.
(4) When drawing the front wave arc, the arc must be smooth.
(3), back pants sample production:
1, process flow:
① Basic line (trousers long line) → ② Lower flat line (foot line) → ③ Upper flat line (waist line) → ④ Horizontal crotch line → ⑤ Hip circumference line →⑤Middle crotch line (knee circumference line) →⑦Lower crotch line →⑧Horizontal hip circumference line (straight back crotch line) →⑨Diagonal back crotch line →⑩Waist and waist tilt →χ)
2. Key points of the process:
(1). Generally, the back picture should be based on the front picture, and the horizontal line of the important part of the front picture should extend beyond the other side of the pattern.
(2) After measuring the crotch width and crotch drop of 0.5cm of the back panel, the curvature of the internal seam after fixation is greater than that of the front panel, so in order to ensure the equal length of the front panel, the crotch drop of 0.5cm is needed.
(3), the back wave arc bending potential should be enough, and then the hips will be wrinkled.
(4) When setting the back pocket, ensure that the pocket is away from the center line of pants 1cm, so that the finished product will not wrinkle.
(5) The included angle between the back waist line and the back wave arc should be 900, so that there will be no concave angle.
Four, production standards:
1. The outline of the pattern is round, smooth and natural.
2. Master the drawing steps, auxiliary lines and finished product lines with distinct layers and prominent external outlines.
3. The cutting position standard, cutting should be 90 degrees with the sample, and the depth is 0.2~0.3cm.
4. Marking specifications: fabric direction, model, code, name and quantity of cut pieces.
5. Add seams: Pay attention to uniform seams, and also pay attention to key parts (such as both sides of welt).
6, pattern surface should be kept clean and clear.
7. Paper-cut pattern: The gesture of holding scissors should be standardized. When paper-cutting, the scissors mouth is slightly inclined outward by 8~ 10 degrees.