Method for drafting a variable sleeve for a Chinese-style men's suit with twist

Abstract

This invention discloses a method for pattern making a variable-length Chinese-style men's raglan sleeve with a twisting design. By employing a two-piece sleeve twisting design, the structural rationality and aesthetics of the sleeve are enhanced. Simultaneously, aligning the sleeve seam with the longitudinal dividing line of the garment body ensures the simplicity of the overall lines of the Chinese-style men's clothing and the concealment of seams. This method can also use the point where the sleeve meets the garment body as a rotation point to change the sleeve attachment angle, achieving rapid adjustment of the sleeve's appearance. When worn, the garment achieves the same level of comfort as a fitted sleeve when the arm is raised, and a smooth, clean underarm with minimal wrinkles when the arm is lowered. Furthermore, the connected garment body and sleeves create a simple and elegant appearance, with soft and graceful shoulder lines. The minimal seams between the garment body and sleeves achieve a well-fitting shape while maintaining excellent concealment of structural lines, resulting in an overall aesthetically pleasing and comfortable garment.

Description

Technical Field

[0001] This invention belongs to the field of clothing engineering technology, and specifically relates to a method for pattern making of a variable Chinese-style men's raglan sleeve with torsional force. Background Technology

[0002] Garment sleeves are generally divided into two types: set-in sleeves and raglan sleeves. Set-in sleeves originated from the Western three-dimensional sleeve design, offering excellent fit and comfort, but the set-in line is less aesthetically pleasing and disrupts the integrity of the garment. Raglan sleeves, on the other hand, embody the flatness and uniformity emphasized in Eastern garment design philosophy. Traditional Chinese raglan sleeves, due to their wide and straight shape, offer excellent mobility and beautiful shoulder lines, resulting in a simple and elegant design. However, when the arms hang down, they tend to accumulate wrinkles under the armpits, affecting both comfort and aesthetics. With the improvement of economic technology and living standards, coupled with the widespread adoption of sports and healthy living concepts, contemporary people demand both aesthetic appeal and comfort in clothing designs. Raglan sleeves, due to their ease of movement and simple fit, have become an ideal sleeve type for various garment categories. Common pattern-making methods for Chinese-style raglan sleeves include increasing the shoulder slope, adding underarm corners or crotch seams, and separating the body and sleeves into pieces. If the shoulder slope is increased too much and the sleeve angle is reduced, it will pull on the body when the arm is raised, making it difficult to raise the arm. If underarm corners, crotch seams, or body and sleeves are separated at the same time, it will easily damage the integrity and aesthetics of the body shape. Moreover, the pattern-making process is relatively complicated and it is difficult to adjust the pattern. Summary of the Invention

[0003] The purpose of this invention is to provide a method for pattern making of a variable-length Chinese-style men's raglan sleeve with torsional force, solving the problem of conflicting fit, comfort, and integrity in traditional raglan sleeve pattern making methods. Furthermore, the variable sleeve state design proposed in this method simplifies the pattern adjustment process and improves pattern making efficiency.

[0004] To solve the above-mentioned technical problems, the following technical solution is adopted.

[0005] A method for pattern making of a variable Chinese-style men's raglan sleeve with torsional force, comprising the following steps:

[0006] S1. Draw the front bodice pattern and the back bodice pattern, and determine the front shoulder slope, back shoulder slope, front armhole curve and back armhole curve respectively.

[0007] S2. Determine the front fitting point at the front armhole and the back fitting point at the back armhole. Draw lines connecting the front fitting point to the front shoulder point and the back fitting point to the back shoulder point, respectively.

[0008] S3. Given the sleeve width, draw a sleeve structure based on the sleeve width and the shape and size of the armhole of the garment.

[0009] S4. Draw a two-piece sleeve pattern with a twisting motion based on the one-piece sleeve structure, and redetermine the sleeve center line; divide the large sleeve piece into a front large sleeve piece and a back large sleeve piece along the sleeve center line to obtain a three-piece sleeve pattern: a small sleeve piece, a front large sleeve piece, and a back large sleeve piece.

[0010] S5. Design the vertical dividing line of the front bodice to divide the front bodice into the front center piece and the front side piece, and transfer the amount of the front side piece to the back bodice piece; align the front large sleeve piece with the front armhole line, and align the back large sleeve piece with the back armhole line.

[0011] S6. Rotate around the previous fitting point to change the front sleeve cap height and front sleeve state. Then rotate around the next fitting point to change the back sleeve cap height and back sleeve state. Correct the front sleeve cap line and back sleeve cap line, and adjust and check to ensure that the seam dimensions are consistent.

[0012] After optimization, the specific operation of S1 is as follows: A rectangle is drawn based on the garment length and the finished half-chest circumference. The armhole depth line is drawn by taking the chest height dimension parallel to the top horizontal line downwards. The waistline is drawn by taking the back length dimension parallel to the top horizontal line downwards. A perpendicular line is drawn downwards from the midpoint a of the armhole depth line, intersecting at point b. Line segment ab is the side seam line, and point a is the bottom point of the armhole. The back neckline is drawn sequentially from the back bodice. The back shoulder slope is determined according to 15:4.5. The back shoulder point c is determined according to the shoulder width dimension, and the back shoulder allowance is set to 1.5cm. The front bodice is drawn sequentially... Draw the front neckline, where the front horizontal neckline opening = front vertical neckline opening = back horizontal neckline opening - 0.3cm. Determine the front shoulder slope according to 15:5.5. Determine the front shoulder point d based on the front shoulder length = back shoulder length - 0.5cm. Set the front shoulder advance to 2cm. Connect the front shoulder point d, the armhole bottom point a, and the back shoulder point c in sequence, making the front armhole curve tangent to the chest width line and the back armhole curve tangent to the back width line. Adjust the shape of the armhole curve to obtain the complete garment pattern. Divide the garment pattern into the front garment pattern and the back garment pattern with the side seam line ab as the boundary.

[0013] After optimization, in step S2, the positions of the front and rear matching points are aligned with the positions of the longitudinal dividing lines of the garment body, which can be divided into the following two cases.

[0014] (1) First determine the position of the front or back coincidence point and use it as the reference starting point of the vertical dividing line of the garment body.

[0015] (2) First determine the position of the vertical dividing line of the garment body. The intersection of the dividing line with the armhole line is the front or back intersection point.

[0016] After optimization, it is characterized by...

[0017] The specific operation of (1) is as follows: draw a parallel line 4cm above the armhole depth line, and the intersection of the parallel line and the front armhole curve is the front conformation point e; draw a parallel line 7-8cm above the armhole depth line, and the intersection of the parallel line and the back armhole curve is the back conformation point f. The 4cm and 7-8cm here are conventional reference values, and the specific values ​​depend on the style.

[0018] The specific operation of (2) is as follows: the front bodice dividing line is designed on the vertical line of the front pocket, and the intersection of the vertical line segment and the armhole line is the front conforming point e; the position of the back conforming point f can be obtained in the same way. The design position of the front bodice dividing line here is a reference position, so that the front pocket has good concealment and structural integrity. In actual operation, the positions of the front bodice vertical dividing line and the back bodice vertical dividing line still need to be based on the style.

[0019] After optimization, the specific operation of S3 is as follows: The sleeve width is designed according to the human arm circumference and the looseness of the garment body; a horizontal sleeve width line gh is drawn; the arc segment ae is mirrored vertically to he, with point a coinciding with point h; the arc segment af is mirrored vertically to gf, with point a coinciding with point g; circles are drawn with points e and f as centers and line segments ed and fc as radii, respectively, intersecting at point i, which is the top point of the sleeve cap; a perpendicular line is drawn through point i to form the sleeve center line ij; perpendicular lines are drawn through points h and g to form the front and back sleeve seam lines, respectively; the cuff line is determined according to the sleeve length; and the elbow line is determined according to the elbow length; wherein, the sleeve center line intersects the elbow line at point l, and the sleeve center line intersects the sleeve width line at point k.

[0020] After optimization, the sleeve width is determined by adding ease allowance to the human arm circumference, with an ease allowance of more than 6cm added to the arm circumference.

[0021] After optimization, in step S4, the twisting force is determined by moving the sleeve center line forward by 3-4.5cm, and then moving it forward by about 3cm at the cuff. Based on this, two sleeve patterns are drawn.

[0022] After optimization, the specific operation of S4 is as follows: draw a perpendicular line mo 3-4.5cm forward parallel to the sleeve center line ij, where the forward deviation of 3-4.5cm is the torsional force of the sleeve swinging forward; line segment mo intersects the sleeve elbow line at point n; draw a perpendicular line pr through the midpoint of line segment mh on the sleeve width line, intersecting the sleeve width line and the cuff line at points p and r respectively, and line segment pr intersects the sleeve elbow line at point q; draw a perpendicular line su through the midpoint of line segment gm on the sleeve width line, intersecting the sleeve width line and the cuff line at points s and u respectively, and line segment su intersects the sleeve elbow line at point t; extend line segment us to intersect line segment if at point a'.

[0023] On the cuff line, take point v 3cm forward from point o, and connect point n and point v; draw a perpendicular line from point v to line segment nv, and take vw = vx = cuff / 4 on the perpendicular line with point v as the midpoint; on the elbow line, take point y 1cm to the left of point q, connect point y and point p with a straight line, and connect point y and point w with a straight line, the broken line pyw is the common line of the front sleeve; similarly, take point z 1cm to the right of point t, connect point z and point a' directly, and connect point z and point x with a straight line, the broken line a'zx is the common line of the back sleeve.

[0024] Mirror the bottom arc of the front sleeve armhole (eh) along the vertical line (pr) to get e'm; mirror the bottom arc of the back sleeve armhole (fg) along the vertical line (su) to get f'm, draw the bottom arc of the armhole (e'mf') smoothly, and connect points e and e', connect points f and f', connect points a' and f'; design a 3cm front sleeve offset below the elbow line of the front sleeve, using line segment yw as the boundary, so that line segment b'c' is parallel to line segment yw, and line segment d'g' is parallel to line segment yw; intersect the elbow line at points b' and d' respectively, and intersect the cuff line at points c' and g' respectively; connect points b' and e', and connect points d' and e in sequence; design a 3cm back sleeve offset above the elbow line of the back sleeve, using line segment a'z as the boundary, so that line segment h'i' is parallel to line segment a'z, and line segment j'k' is parallel to line segment a' z; and intersect the elbow line at points i' and k' respectively. Line segment h'i' intersects line segment a'f' at point h', and line segment j'k' intersects line segment a'f at point j'; connect points i' and x in sequence, and connect points k' and x in sequence; connect the top point i of the sleeve and the midpoint v of the cuff with an arc, and the arc iv is the new sleeve center line; draw arcs in sequence to smooth the front sleeve seam e'c' and eg', and draw arcs in sequence to smooth the back sleeve seam h'x and j'x; the resulting e'c'xh'f'm is the small sleeve pattern, ieg'v is the front large sleeve pattern, and ivxj' is the back large sleeve pattern; combine the line segment ij' of the back large sleeve pattern ivxj' and the line segment h'f' of the small sleeve pattern e'c'xh'f'm into a straight line, so that point j' coincides with point h', to obtain the composite sleeve pattern if'me'c'x-xv.

[0025] After optimization, in step S5, when the front sleeve and the front armhole line are aligned, the front alignment point and the front shoulder point are used as alignment points respectively; when the back sleeve and the back armhole line are aligned, the back alignment point and the back shoulder point are used as alignment points respectively.

[0026] After optimization, S5 specifically involves: designing the front bodice dividing line, dividing the front bodice into a front center piece and a front side piece, and transferring the front side piece to the back bodice piece, and joining the side seams of the front side piece and the back bodice piece together; appropriately increasing the hem of the front and back bodice to visually meet the silhouette requirements of the style, thus obtaining a new front bodice pattern and a back bodice pattern.

[0027] On the front bodice pattern, align the line segment ei of the front wide sleeve pattern ieg'v with the oblique line ed of the front bodice armhole to obtain the pattern for the front bodice with a detachable sleeve; on the back bodice pattern, align the line segment if' of the composite sleeve pattern if'me'c'x-xv with the oblique line cf of the back bodice armhole, and simultaneously extend the back sleeve seams xh' and xj' to intersect with the back bodice armhole line to obtain the pattern for the back bodice with a detachable sleeve.

[0028] After optimization, in step S6, the front sleeve can be rotated with the front fitting point as the rotation point to change the sleeve angle, and the back sleeve can be rotated with the back fitting point as the rotation point to change the sleeve angle. At the same time, by correcting the sleeve center line and checking the seam size, the purpose of making the sleeve wearing state changeable can be achieved.

[0029] The above technical solution has the following beneficial effects.

[0030] This invention relates to a method for pattern making a Chinese-style men's raglan sleeve. By employing a two-piece sleeve twist design, the structural rationality and aesthetics of the sleeve are enhanced. Simultaneously, aligning the sleeve seam with the longitudinal dividing line of the garment body ensures the simplicity of the overall lines and the concealment of seams in the Chinese-style men's clothing. This method can also use the point of contact between the sleeve and the garment body as a rotation point to change the sleeve attachment angle, achieving rapid adjustment of the sleeve's appearance. The Chinese-style men's raglan sleeve produced using this method improves upon the problem of excessive pleats under the armpits in traditional raglan sleeves. Furthermore, compared to existing conventional gusseted sleeves, corner sleeves, and panel sleeves, its pattern-making steps are simpler, with fewer structural seams, a clean and elegant appearance, and comfortable and appropriate movement. Attached Figure Description

[0031] The invention will be further described below with reference to the accompanying drawings.

[0032] Figure 1 This is a garment style diagram of a Chinese-style men's raglan sleeve structure according to an embodiment of the present invention;

[0033] Figure 2 This is a structural schematic diagram of the complete garment pattern according to an embodiment of the present invention.

[0034] Figure 3 This is a schematic diagram of the structure of the front and back garment patterns according to an embodiment of the present invention.

[0035] Figure 4 This is a schematic diagram of a sleeve structure according to an embodiment of the present invention;

[0036] Figure 5 This is a schematic diagram of the two-piece sleeve structure according to an embodiment of the present invention;

[0037] Figure 6 This is a schematic diagram of the structure of the small sleeve pattern, the front large sleeve pattern, the back large sleeve pattern, and the composite sleeve pattern according to an embodiment of the present invention;

[0038] Figure 7 This is a schematic diagram of the structure of the garment body with additional allowance according to an embodiment of the present invention;

[0039] Figure 8 This is a schematic diagram of the front bodice sleeve pattern structure according to an embodiment of the present invention;

[0040] Figure 9 This is a schematic diagram of the back bodice sleeve pattern structure according to an embodiment of the present invention. Detailed Implementation

[0041] This invention aims to provide a method for pattern making a variable-length Chinese-style men's raglan sleeve with a twisted design. By employing a two-piece sleeve twisted design, the structural rationality and aesthetics of the sleeve are enhanced. Simultaneously, aligning the sleeve seam with the longitudinal dividing line of the garment body ensures the simplicity of the Chinese-style men's clothing's overall lines and the concealment of the seams.

[0042] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, after reading the teachings of this invention, those skilled in the art can make various modifications and variations to the invention, all of which fall within the scope defined by the appended claims.

[0043] The following example uses a men's 170 / 88A garment, with finished dimensions of 74cm (length L), 104cm (chest B), 44cm (shoulder S), 60cm (basic sleeve length), 74cm (sleeve length including shoulder, measured from the side neck point along the sleeve center line to the cuff), and 28cm (cuff length). The design is shown in the image below. Figure 1 ).

[0044] Combination Figures 2 to 9 The drawing method is explained in detail below, with the specific steps as follows:

[0045] S1. Based on the garment length = 74cm and the finished half-bust circumference = 104cm / 2 = 52cm, construct a rectangle. Draw the armhole depth line by taking the bust height = 25cm parallel to the top horizontal line downwards. Draw the waistline by taking the back length = 42cm parallel to the top horizontal line downwards. Draw a perpendicular line downwards from the midpoint 'a' of the armhole depth line, intersecting at point 'b'. Line segment 'ab' is the side seam line, and point 'a' is the bottom point of the armhole. Draw the back neckline sequentially from the back of the garment, where the back horizontal neckline opening is 7.8cm and the back vertical neckline opening is 2.5cm. Determine the back shoulder slope according to a 15:4.5 ratio. Starting from the back center line, determine the back shoulder point c based on shoulder width / 2 = 22cm, with a back shoulder advance of 1.5cm. Draw the front neckline sequentially from the front bodice, where the front horizontal neckline opening = front vertical neckline opening = back horizontal neckline opening - 0.3cm = 7.5cm. Determine the front shoulder slope according to a 15:5.5 ratio. Determine the front shoulder point d based on front shoulder length = back shoulder length - 0.5cm, with a front shoulder advance of 2cm. Connect the front shoulder point d, armhole bottom point a, and back shoulder point c sequentially, ensuring the front armhole curve is tangent to the chest width line and the back armhole curve is tangent to the back width line. After adjusting the shape of the armhole curve, as follows... Figure 2 and Figure 3 As shown, increase the back and front neckline sizes and correct the neckline. Draw the Chinese-style stand-up collar, front hemline, back center line, and hemline in sequence to obtain the complete garment pattern.

[0046] Divide the garment pattern into a front garment pattern and a back garment pattern, with the side seam line ab as the boundary.

[0047] S2. Determine the front and back alignment points of the armhole. This embodiment uses the first method. First, draw a parallel line 4cm above the armhole depth line. The intersection of this parallel line and the front armhole curve is the front alignment point e. Draw a parallel line 7-8cm above the armhole depth line. The intersection of this parallel line and the back armhole curve is the back alignment point f. Connect the front alignment point e to the front shoulder point d, and connect the back alignment point f to the back shoulder point c.

[0048] S3. Based on the human arm circumference and the looseness of the garment, design the sleeve width to be 38cm, and draw the sleeve width line gh horizontally. Mirror the arc segment ae vertically to he, so that point a coincides with point h; mirror the arc segment af vertically to gf, so that point a coincides with point g. Draw circles with points e and f as centers and line segments ed and fc as radii respectively, the two circles intersecting at point i, which is the top point of the sleeve cap. Draw a perpendicular line through point i to the sleeve center line ij, and draw perpendicular lines through points h and g to the front and back sleeve seam lines respectively. Determine the cuff line based on the basic sleeve length of 60cm, and the elbow line based on the elbow length of 31cm. The sleeve center line intersects the elbow line at point l, and the sleeve center line intersects the sleeve width line at point k (e.g., ...). Figure 4 ).

[0049] S4. Draw a perpendicular line mo 3-4.5cm forward from the center line ij, where the forward deviation of 3-4.5cm represents the torsional force of the sleeve swinging forward. Line segment mo intersects the elbow line at point n. Draw a perpendicular line pr from the midpoint of line segment mh on the sleeve width line, intersecting the sleeve width line and cuff line at points p and r respectively. Line segment pr intersects the elbow line at point q. Draw a perpendicular line su from the midpoint of line segment gm on the sleeve width line, intersecting the sleeve width line and cuff line at points s and u respectively. Line segment su intersects the elbow line at point t. Extend line segment us to intersect line segment if at point a'.

[0050] On the cuff line, take point v 3cm forward from point o, and connect point n and point v. Draw a perpendicular line from point v to line segment nv, with point v as the midpoint. On this perpendicular line, take vw = vx = cuff / 4 = 7cm. On the elbow line, take point y 1cm to the left of point q, connect point y and point p with a straight line, and then connect point y and point w with a straight line. The broken line pyw is the common line of the front sleeve. Similarly, take point z 1cm to the right of point t, connect point z and point a' directly, and then connect point z and point x with a straight line. The broken line a'zx is the common line of the back sleeve.

[0051] Mirror the bottom arc of the front sleeve armhole (eh) along the perpendicular line (pr) to obtain e'm. Mirror the bottom arc of the back sleeve armhole (fg) along the perpendicular line (su) to obtain f'm. Draw a smooth bottom arc of the armhole (e'mf'), and connect points e and e', f and f', and a' and f'. Below the elbow line of the front sleeve, design a 3cm front sleeve offset using line segment yw as the boundary, making line segment b'c' parallel to line segment yw and line segment d'g' parallel to line segment yw. Intersect the elbow line at points b' and d' respectively, and intersect the cuff line at points c' and g' respectively. Connect points b' and e', and d' and e in sequence. Above the elbow line of the back sleeve, design a 3cm back sleeve offset using line segment a'z as the boundary, making line segment h'i' parallel to line segment a'z and line segment j'k' parallel to line segment a'z. Intersect the elbow line at points i' and k' respectively. Line segment h'i' intersects line segment a'f' at point h', and line segment j'k' intersects line segment a'f at point j'. Connect points i' and x, and connect points k' and x. Connect the sleeve cap point i and the cuff midpoint v with an arc, and the arc iv is the new sleeve center line. Draw arcs along the front sleeve seam e'c' and eg', and arcs along the back sleeve seam h'x and j'x. The resulting e'c'xh'f'm is the small sleeve pattern, ieg'v is the front large sleeve pattern, and ivxj' is the back large sleeve pattern. Combine the line segment ij' of the back large sleeve pattern ivxj' and the line segment h'f' of the small sleeve pattern e'c'xh'f'm into a straight line, so that point j' coincides with point h', to obtain the composite sleeve pattern if'me'c'x-xv (e.g., Figure 5 , Figure 6 (As shown).

[0052] S5. Draw a vertical dividing line at the front hemline, dividing the front bodice into a center front piece and a side front piece. Extend the length of the side front piece to the back bodice; that is, sew the side seams of the side front piece to the side seams of the back bodice. Appropriately enlarge the hemlines of the front and back bodice to visually satisfy the silhouette requirements of the style, resulting in new front and back bodice patterns (e.g., ...). Figure 7 ).

[0053] On the front bodice pattern, align line segment ei of the front wide sleeve pattern ieg'v with the front armhole slant line ed. This yields the front bodice raglan sleeve pattern. On the back bodice pattern, align line segment if' of the composite sleeve pattern if'me'c'x-xv with the back armhole slant line cf, and simultaneously extend the back armhole seams xh' and xj' to intersect with the back armhole line, yielding the back bodice raglan sleeve pattern (e.g., ...). Figure 8 , Figure 9 (As shown).

[0054] S6. Previously, rotating around point e as the center could change the front sleeve cap height and the front sleeve state; later, rotating around point f as the center could change the back sleeve cap height and the back sleeve state. Correct the front and back sleeve cap lines, adjust and check to ensure the consistency or rationality of the seam dimensions, so as to achieve the purpose of changing the sleeve wearing state and improving the efficiency of pattern adjustment.

[0055] The garment made according to this invention offers the same level of comfort and freedom of movement as a set-in sleeve when the arms are raised, and a smooth, clean underarm with minimal wrinkles when the arms are lowered. Furthermore, the seamless design of the garment body and sleeves creates a simple and elegant appearance, with graceful and refined shoulder lines. Compared to existing conventional gusseted sleeve, corner sleeve, and panel sleeve technologies, its drafting process is simpler, with fewer seams between the garment body and sleeves, achieving a well-fitting silhouette while effectively concealing structural lines, resulting in an overall aesthetically pleasing, comfortable, and appropriate appearance.

[0056] The above are merely specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on the present invention to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of the present invention.

Claims

1. A method for drafting a variable sleeve for a Chinese-style men's suit with a twist potential, characterized in that The process includes the following steps: S1. Draw the front and back bodice patterns, determining the front shoulder slope, back shoulder slope, front armhole curve, and back armhole curve respectively; S2. Determine the front fitting point at the front armhole and the back fitting point at the back armhole, drawing lines connecting the front fitting point to the front shoulder point and the back fitting point to the back shoulder point respectively; S3. Given the sleeve width, draw a one-piece sleeve structure based on the sleeve width and the shape and size of the bodice armhole; S4. Draw two sleeve patterns with a twist based on the one-piece sleeve structure, redetermining the sleeve center line; [The last sentence appears to be incomplete and possibly refers to a separate step.] The large sleeve piece is divided into a front large sleeve piece and a back large sleeve piece, resulting in a three-piece sleeve pattern: a small sleeve piece, a front large sleeve piece, and a back large sleeve piece. S5: Design the vertical dividing line of the front bodice, dividing it into a front center piece and a front side piece. Borrow allowance from the front side piece to the back bodice. Align the front large sleeve piece with the front armhole line and the back large sleeve piece with the back armhole line. S6: Rotate using the front alignment point as the center to change the front sleeve cap height and the front sleeve state. Rotate using the back alignment point as the center to change the back sleeve cap height and the back sleeve state. Correct the front and back sleeve cap lines, and adjust and verify to ensure consistent seam dimensions.

2. The method for pattern making of a variable Chinese-style men's jumpsuit sleeve with torsional force according to claim 1, characterized in that: The specific operation of S1 is as follows: Draw a rectangle based on the garment length and the finished half-chest circumference. Draw the armhole depth line by taking the chest height dimension parallel to the top horizontal line downwards. Draw the waistline by taking the back length dimension parallel to the top horizontal line downwards. Draw a perpendicular line downwards from the midpoint a of the armhole depth line, intersecting at point b. Line segment ab is the side seam line, and point a is the bottom point of the armhole. Draw the back neckline sequentially from the back bodice. Determine the back shoulder slope according to 15:4.

5. Determine the back shoulder point c according to the shoulder width dimension. Set the back shoulder allowance to 1.5cm. Draw the front... For the neckline, the front horizontal neckline is equal to the front vertical neckline, which is equal to the back horizontal neckline minus 0.3cm. The front shoulder slope is determined according to a ratio of 15:5.

5. The front shoulder point d is determined based on the front shoulder length being equal to the back shoulder length minus 0.5cm. The front shoulder advance is set to 2cm. The front shoulder point d, the armhole bottom point a, and the back shoulder point c are connected sequentially, ensuring that the front armhole curve is tangent to the chest width line and the back armhole curve is tangent to the back width line. The shape of the armhole curve is adjusted to obtain the complete garment pattern. The garment pattern is then divided into the front garment pattern and the back garment pattern by the side seam line ab.

3. The method for pattern making of a variable Chinese-style men's jumpsuit sleeve with torsional force according to claim 1, characterized in that: The position of the front and back matching points in S2 is aligned with the position of the longitudinal dividing line of the garment body. There are two situations: (1) First determine the position of the front or back matching point and use it as the reference starting point of the longitudinal dividing line of the garment body; (2) First determine the position of the longitudinal dividing line of the garment body and the intersection of it with the armhole line is the front or back matching point.

4. The method for pattern making of a variable Chinese-style men's jumpsuit sleeve with torsional force according to claim 3, characterized in that: The specific operation of (1) is as follows: draw a parallel line 4cm above the armhole depth line, and the intersection of the parallel line and the front armhole arc is the front conformation point e; draw a parallel line 7-8cm above the armhole depth line, and the intersection of the parallel line and the back armhole arc is the back conformation point f; the specific operation of (2) is as follows: design the front bodice dividing line on the vertical line of the front pocket, and the intersection of the vertical line segment and the armhole line is the front conformation point e; the position of the back conformation point f can be obtained in the same way.

5. The method for pattern making of a variable Chinese-style men's jumpsuit sleeve with torsional force according to claim 1, characterized in that: The specific operation of S3 is as follows: Design the sleeve width based on the human arm circumference and the looseness of the garment body; draw the sleeve width line gh horizontally; mirror the arc segment ae along the vertical direction to he, with point a coinciding with point h; mirror the arc segment af along the vertical direction to gf, with point a coinciding with point g; draw circles with points e and f as centers and line segments ed and fc as radii, respectively, intersecting at point i, which is the top point of the sleeve; draw a perpendicular line through point i as the sleeve center line ij; draw perpendicular lines through points h and g as the front and back sleeve seam lines, respectively; determine the cuff line based on the sleeve length; determine the elbow line based on the elbow length; wherein, the sleeve center line intersects the elbow line at point l, and the sleeve center line intersects the sleeve width line at point k.

6. The method for pattern making of a variable Chinese-style men's jumpsuit sleeve with torsional force according to claim 5, characterized in that: Sleeve width is determined by adding ease allowance to the human arm circumference, which is more than 6cm larger than the arm circumference.

7. The method for pattern making of a variable Chinese-style men's jumpsuit sleeve with torsional force according to claim 1, characterized in that: The twist in S4 is determined by moving the sleeve center line forward by 3-4.5cm, and moving it forward by about 3cm at the cuff. Based on this, two sleeve patterns are drawn.

8. The method for pattern making of a variable Chinese-style men's jumpsuit sleeve with torsional force according to claim 7, characterized in that: The specific operation of S4 is as follows: Draw a perpendicular line mo 3-4.5cm forward from the center line ij, where the forward deviation of 3-4.5cm represents the torsional force of the sleeve swinging forward; line segment mo intersects the elbow line at point n; draw a perpendicular line pr from the midpoint of line segment mh on the sleeve width line, intersecting the sleeve width line and cuff line at points p and r respectively, and line segment pr intersects the elbow line at point q; draw a perpendicular line su from the midpoint of line segment gm on the sleeve width line, intersecting the sleeve width line and cuff line at points s and u respectively, and line segment su intersects the elbow line at point t; extend line segment us to intersect line segment if at point a'; take point v 3cm forward from point o on the cuff line, and connect points n and v; pass through point... Draw a perpendicular line from point v to line segment nv. Using point v as the midpoint, take vw = vx = cuff / 4 on the perpendicular line. On the elbow line, point y is 1cm to the left of point q. Connect point y and point p with a straight line, and then connect point y and point w with a straight line. The broken line pyw is the common line of the front sleeve. Similarly, point z is 1cm to the right of point t. Connect point z and point a' directly, and then connect point z and point x with a straight line. The broken line a'zx is the common line of the back sleeve. Mirror the bottom arc of the front sleeve armhole eh along the perpendicular line pr to get e'm. Mirror the bottom arc of the back sleeve armhole fg along the perpendicular line su to get f'm. Draw the bottom arc of the armhole e'mf' smoothly, and connect point e and point e', connect point f and point f', and then connect... Connect points a' and f'; below the elbow line of the front sleeve, design a 3cm front sleeve offset using line segment yw as the boundary, making line segment b'c' parallel to line segment yw, and line segment d'g' parallel to line segment yw; intersecting the elbow line at points b' and d' respectively, and intersecting the cuff line at points c' and g' respectively; connect points b' and e', and connect points d' and e respectively; above the elbow line of the back sleeve, design a 3cm back sleeve offset using line segment a'z as the boundary, making line segment h'i' parallel to line segment a'z, and line segment j'k' parallel to line segment a'z; intersecting the elbow line at points i' and k' respectively, and line segment h'i' intersecting line segment a'f' at point h'. Line segment j'k' intersects line segment a'f at point j'; connect points i' and x in sequence, and connect points k' and x in sequence; connect the top point i of the sleeve cap and the midpoint v of the cuff with an arc, and the arc iv is the new sleeve center line; draw arcs in sequence to smooth the front sleeve seam e'c' and eg', and draw arcs in sequence to smooth the back sleeve seam h'x and j'x; the resulting e'c'xh'f'm is the small sleeve pattern, ieg'v is the front large sleeve pattern, and ivxj' is the back large sleeve pattern; combine the line segment ij' of the back large sleeve pattern ivxj' and the line segment h'f' of the small sleeve pattern e'c'xh'f'm into a straight line, so that point j' coincides with point h', to obtain the composite sleeve pattern if'me'c'x-xv.

9. The method for pattern making of a variable Chinese-style men's jumpsuit sleeve with torsional force according to claim 1, characterized in that: In S5, when the front sleeve aligns with the front armhole line, the alignment points are the front meeting point and the front shoulder point, respectively. When the back sleeve aligns with the back armhole line, the alignment points are the back meeting point and the back shoulder point, respectively.

10. The method for pattern making of a variable Chinese-style men's jumpsuit sleeve with torsional force according to claim 9, characterized in that: The specific operation of S5 is as follows: design the front bodice dividing line, divide the front bodice into the front center piece and the front side piece, and borrow the amount of the front side piece to the back bodice piece, and sew the side seam of the front side piece to the side seam of the back bodice piece; appropriately increase the hem of the front and back bodice to visually meet the silhouette characteristics required by the style, and obtain a new front bodice pattern and a back bodice pattern; on the front bodice pattern, make the line segment ei of the front large sleeve pattern ieg'v coincide with the front bodice armhole diagonal line ed, and obtain the front bodice annealed sleeve pattern; on the back bodice pattern, make the line segment if' of the composite sleeve pattern if'me'c'x-xv coincide with the back bodice armhole diagonal line cf, and at the same time extend the back sleeve seam xh' and xj' to intersect with the back bodice armhole line, and obtain the back bodice annealed sleeve pattern.

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