Manufacturing method of spiral guide wire for door glass lifter and vehicle

Abstract

The present invention relates to the field of vehicle technology, and specifically provides a method for manufacturing a spiral guide line for a door glass lifter and a vehicle, aiming to solve the problem that the upper corner points and lower corner points of the existing door glass near the A-pillar and the B-pillar do not fall on the same set of spiral lines, resulting in shaking, lifting and lowering jamming, and other undesirable problems during the lifting and lowering of the door glass. To this end, the method for manufacturing the spiral guide line of the present invention includes: obtaining the radius value of the spiral line and the coordinates of two points on the spiral line axis according to the spiral line parameter equation; drawing the spiral line axis according to the coordinates of the two points on the spiral line axis; and drawing the spiral line according to the spiral line axis, starting point coordinates, radius value, and pitch value. The spiral guide line manufactured according to the present invention enables the upper corner points and lower corner points of the door glass near the A-pillar and the B-pillar to be located on the spiral guide line with the same axis and the same pitch, thereby reducing the front-to-back and inside-out shaking during the lifting and lowering of the door glass and avoiding the occurrence of jamming.

Description

Technical Field

[0001] The invention relates to the technical field of vehicles, and in particular provides a method for manufacturing a spiral guide wire for a door glass lifter and a vehicle. Background Art

[0002] The guide line of the glass lifter for frameless doors needs to meet the requirements of travel difference and face difference while enabling the glass to move. In most cases, the guide line will be generated in the form of a spiral line. That is, a spiral line is used as the guide line of the lifter, and the guide line used is located in the same cylindrical surface as the window glass.

[0003] However, for frameless door glass styling with higher requirements, the door glass styling surface generally adopts an arc rotation body (a rotation body obtained by rotating a spatial arc around an eccentric axis) rather than a standard cylindrical surface, and the position of the spiral axis is manually adjusted based on experience so that the upper and lower corner points of the door glass near the A-pillar and the upper and lower corner points near the B-pillar approximately fall on the same set of spiral lines. The spiral lines drawn in this way are difficult to meet the styling requirements (surface difference) and movement smoothness (stroke difference) requirements at the same time, resulting in adverse problems such as shaking, abnormal noise, lifting and lowering jamming, and inability to lift and lower during the glass lifting process.

[0004] Accordingly, the present invention needs to provide a new method for manufacturing a spiral guide wire for a door glass lifter and a vehicle to solve the above technical problems. Summary of the invention

[0005] The present invention aims to solve the above technical problem, that is, to solve the problem that when the existing door glass shape adopts an arc rotating body instead of a standard cylindrical surface, the upper corner points and lower corner points of the door glass close to the A-pillar and the upper corner points and lower corner points close to the B-pillar do not fall on the same set of spiral lines, resulting in shaking, lifting and lowering jamming, and inability to lift and lower during the lifting and lowering process of the door glass.

[0006] To this end, in a first aspect, the present invention provides a method for manufacturing a spiral guide wire for a door glass lifter, the method for manufacturing the spiral guide wire comprising:

[0007] According to the helix parameter equation, the radius R of the helix and the coordinates Q1 and Q2 of two points on the helix axis are obtained;

[0008] Draw the helix axis according to the coordinates Q1 and Q2 of two points on the helix axis;

[0009] Get the pitch value of the helix;

[0010] Get the starting point coordinates of the spiral line;

[0011] A spiral line is drawn according to the spiral line axis, the starting point coordinates, the radius value and the pitch value, and a spiral guide line is made according to the trajectory of the spiral line.

[0012] In a specific implementation of the method for manufacturing a spiral guide wire for a door glass lifter, the step of "obtaining the radius value R of the spiral wire and the coordinates Q1 and Q2 of two points on the axis of the spiral wire according to the spiral wire parameter equation" specifically includes:

[0013] Get the coordinates of the upper and lower corners of the door glass near the A-pillar and the upper and lower corners near the B-pillar;

[0014] The X-axis coordinate values ​​of the lower corner points on the door glass near the A-pillar and the B-pillar are used as the X-axis coordinate values ​​of Q1 and Q2 respectively;

[0015] Substitute the coordinates of the upper and lower corners of the door glass near the A-pillar and the B-pillar and the coordinates of Q1 and Q2 into the helix parameter equation to obtain the radius value R and the Y-axis coordinate values ​​and Z-axis coordinate values ​​of Q1 and Q2.

[0016] In a specific implementation of the method for manufacturing a spiral guide wire for a door glass lifter, the spiral wire parameter equation is:

[0017]

[0018]

[0019]

[0020]

[0021]

[0022] Among them, P1, P2, P3 and P4 are the coordinate values ​​of the upper corner point and the lower corner point of the door glass near the A-pillar and the upper corner point and the lower corner point of the door glass near the B-pillar respectively; Δr1, Δr2, Δr3 and Δr4 are the distances between the upper corner point and the lower corner point of the door glass near the A-pillar and the upper corner point and the lower corner point of the door glass near the B-pillar and the shaped surface of the door glass respectively;

[0023] T j =(Q1(1)+m1t j , Q1(2)+n1t j , Q1(3)+l1t j )

[0024] m1=Q2(1)-Q1(1)

[0025] n1=Q2(2)-Q1(2)

[0026] l1=Q2(3)-Q1(3)

[0027] m 2j =P j (1)-Q1(1)

[0028] n 2j =P j (2)-Q1(2)

[0029] l 2j =P j (3)-Q1(3)

[0030]

[0031] v j =[m 3j , n 3j , l 3j ]

[0032] m 3j =n1l 2j -n 2j l1

[0033] n 3j =l1m 2j -m1l 2j

[0034] l 3j =m1n 2j -n1m 2j

[0035] Among them, T j ,t j and v j They are all intermediate variables, j=1, 2, 3, 4 represent the upper corner point and lower corner point of the door glass close to the A-pillar and the upper corner point and lower corner point close to the B-pillar respectively.

[0036] In a specific implementation of the method for manufacturing a spiral guide wire for a door glass lifter, the step of "obtaining a pitch value of the spiral wire" further includes:

[0037] Obtain the pitch value of the helix according to the pitch parameter equation;

[0038] The pitch parameter equation is:

[0039]

[0040] Where dt is the thread pitch.

[0041] In a specific implementation of the method for manufacturing a spiral guide line for a door glass lifter, the step of "obtaining the starting point coordinates of the spiral line" specifically includes:

[0042] Draw vertical lines from the upper corner points of the door glass near the A-pillar to the axis of the spiral line, and extend Δr1 in the reverse direction along the vertical lines to obtain the starting point coordinates Ha of the spiral line passing through the upper corner points and the lower corner points of the door glass near the A-pillar;

[0043] Draw vertical lines from the upper corner point of the door glass near the B-pillar to the axis of the spiral line, and extend Δr3 in the reverse direction along the vertical line to obtain the starting point coordinate Hb of the spiral line passing through the upper and lower corner points of the door glass near the B-pillar.

[0044] In a specific implementation of the method for manufacturing a spiral guide line for a door glass lifter, the step of "drawing a spiral line according to the spiral line axis, the starting point coordinates, the radius value and the pitch value" specifically includes:

[0045] According to the spiral axis, the starting point coordinate H a , the radius value R and the pitch value dt are used to draw a spiral line passing through the upper corner point and the lower corner point of the door glass near the A-pillar;

[0046] A spiral line passing through the upper corner point and the lower corner point on the door glass near the B-pillar is drawn according to the spiral axis, the starting point coordinate Hb, the radius value R and the pitch value dt.

[0047] In a specific implementation of the method for manufacturing a spiral guide line for a door glass lifter, the step of “manufacturing the spiral guide line according to the trajectory of the spiral line” specifically includes:

[0048] A spiral guide line on the side of the door glass close to the A-pillar is made according to a spiral line passing through an upper corner point and a lower corner point of the door glass close to the A-pillar;

[0049] A spiral guide line on the side of the door glass close to the B-pillar is made according to a spiral line passing through an upper corner point and a lower corner point on the door glass close to the B-pillar.

[0050] In a specific implementation of the method for manufacturing a spiral guide wire for a door glass lifter, the distance between any point on the spiral wire and the door glass shaping surface is less than 0.2 mm when above the water section plane and less than 0.5 mm when below the water section plane.

[0051] In a specific implementation of the method for manufacturing a spiral guide wire for a vehicle door glass lifter, the vehicle door glass shaping surface is an arc rotating body.

[0052] In a second aspect, the present invention further provides a vehicle, on which a door glass lifter is installed, and a guide rail trajectory line of the door glass lifter is manufactured according to the manufacturing method of the spiral guide line described in any one of the above technical solutions.

[0053] When the above technical scheme is adopted, the present invention can calculate the helix parameter equation and the pitch parameter equation according to the coordinates of the upper and lower corner points of the door glass near the A-pillar and the B-pillar and the expected surface difference values ​​of each corner point. By using the helix parameter equation and the pitch parameter equation, the parameters required for drawing the spiral guide line can be obtained, thereby drawing two coaxial and same-pitch spiral lines passing through the upper and lower corner points of the door glass near the A-pillar and the upper and lower corner points of the door glass near the B-pillar. The spacing between any point on the two spiral lines and the modeling surface of the door glass is 0.2 mm above the water section plane and 0.5 mm below the water section plane, which meets the modeling requirements of the door glass. At the same time, since the corner points of the door glass near the A-pillar and the B-pillar are located on the coaxial and same-pitch spiral guide lines, the stroke difference is zero, which meets the stroke difference requirement, has high accuracy, reduces the front and rear and inside and outside shaking during the lifting and lowering of the door glass, and avoids the occurrence of jamming. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0055] Figure 1 It is a main flow chart of the method for manufacturing the spiral guide wire for the door glass lifter provided by the present invention;

[0056] Figure 2 The invention discloses a detailed flow chart of a method for manufacturing a spiral guide wire for a door glass lifter. DETAILED DESCRIPTION

[0057] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not used to limit the scope of protection of the present invention. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0058] It should be noted that in the description of the present invention, the terms "upper", "lower", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the relevant devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition.

[0059] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] See first Figure 1 The present invention provides a method for manufacturing a spiral guide wire for a door glass lifter, the method for manufacturing the spiral guide wire comprising:

[0061] S1, according to the helix parameter equation, calculate the radius R of the helix and the coordinates Q1 and Q2 of two points on the helix axis;

[0062] S2, draw the helix axis according to the coordinates Q1 and Q2 of two points on the helix axis;

[0063] S3, obtaining the pitch value of the helix;

[0064] S4, obtaining the starting point coordinates of the spiral line;

[0065] S5, drawing a spiral line according to the spiral line axis, starting point coordinates, radius value and pitch value, and making a spiral guide line according to the trajectory of the spiral line.

[0066] In this embodiment, the direction from the front to the rear of the vehicle is defined as the X-axis direction, and there are two planes parallel to each other and perpendicular to the X-axis, and the lower corner point of the door glass near the A-pillar is located on one of the planes, and the lower corner point of the door glass near the B-pillar is located on the other plane. Since the axis of the spiral line will not cross the vehicle, the axis of the spiral line must pass through these two planes, so there is an intersection point between the axis of the spiral line and the two planes, that is, the two intersection points are set to Q1 and Q2, and the coordinates of Q1 are set to (x1, y1, z1) and the coordinates of Q2 are set to (x2, y2, z2). Since the two intersection points are located on the same plane as the lower corner point of the door glass near the A-pillar and the lower corner point of the door glass near the B-pillar, respectively, x1 and x2 in Q1 and Q2 are two known fixed values, that is, x1 can be taken as the X-axis coordinate value of the lower corner point of the A-pillar, and x2 can be taken as the X-axis coordinate value of the lower corner point of the B-pillar. In this way, there are actually only four unknowns in Q1 and Q2, namely y1, z1, y2 and z2.

[0067] It should be noted that, for the convenience of value selection, x1 and x2 in Q1 and Q2 are respectively taken as the X-axis coordinate value of the lower corner point of the door glass near the A-pillar and the X-axis coordinate value of the lower corner point of the door glass near the B-pillar, but this is not restrictive. x1 can be taken on the extension line of the lower corner point of the door glass near the A-pillar, and x2 can be taken on the extension line of the lower corner point of the door glass near the B-pillar. The A-pillar and the B-pillar refer to the corresponding A-pillar and B-pillar on the vehicle.

[0068] See below Figure 2 The step S1 of "obtaining the radius R of the helix and the coordinates Q1 and Q2 of two points on the axis of the helix according to the helix parameter equation" specifically includes:

[0069] S11, obtaining the coordinates of the upper corner point and the lower corner point of the door glass close to the A-pillar and the upper corner point and the lower corner point close to the B-pillar;

[0070] S12, taking the X-axis coordinate values ​​of the lower corner points on the door glass near the A-pillar and the B-pillar as the X-axis coordinate values ​​of Q1 and Q2 respectively; illustratively, the value of x1 is 600 mm, and the value of x2 is 1200 mm.

[0071] S13, substituting the coordinates of the upper corner point and the lower corner point of the door glass near the A-pillar and the B-pillar and the coordinates of Q1 and Q2 into the helix parameter equation to obtain the radius value R and the Y-axis coordinate values ​​and Z-axis coordinate values ​​of Q1 and Q2.

[0072] The helix parameter equation is:

[0073]

[0074]

[0075]

[0076]

[0077]

[0078] Among them, P1, P2, P3 and P4 are the coordinate values ​​of the upper corner points and lower corner points of the door glass near the A-pillar and the upper corner points and lower corner points near the B-pillar respectively; Δr1, Δr2, Δr3 and Δr4 are the distances between the upper corner points and lower corner points of the door glass near the A-pillar and the upper corner points and lower corner points near the B-pillar and the door glass styling surface respectively, and norm represents the norm of the vector;

[0079] T j =(Q1(1)+m1t j , Q1(2)+n1t j , Q1(3)+l1tj )

[0080] m1=Q2(1)-Q1(1)

[0081] n1=Q2(2)-Q1(2)

[0082] l1=Q2(3)-Q1(3)

[0083] m 2j =P j (1)-Q1(1)

[0084] n 2j =P j (2)-Q1(2)

[0085] l 2j =P j (3)-Q1(3)

[0086]

[0087] v j =[m 3j , n 3j , l 3j ]

[0088] m 3j =n1l 2j -n 2j l1

[0089] n 3j =l1m 2j -m1l 2j

[0090] l 3j =m1n 2j -n1m 2j

[0091] Among them, T j ,t j and v j are all intermediate variables, j = 1, 2, 3, 4 represent the upper corner and lower corner of the door glass near the A-pillar, and the upper corner and lower corner of the door glass near the B-pillar respectively; Q1(1) refers to x1, Q1(2) refers to y1, Q1(3) refers to z1; Q2(1) refers to x2, Q2(2) refers to y2, Q2(3) refers to z2; P j (1) refers to the x-coordinate value corresponding to the j-th corner point, P j (2) refers to the y-coordinate value corresponding to the j-th corner point, P j (3) refers to the z-coordinate value corresponding to the j-th corner point.

[0092] The distance between any point on the spiral line and the door glass molding surface is less than 0.2mm above the water section plane and less than 0.5mm below the water section plane. According to the requirements that the surface difference above the water section plane is less than 0.2 and the surface difference below the water section plane is less than 0.5mm, Δr1 is +0.2, Δr2 is -0.3, Δr3 is +0.2, and Δr4 is -0.3.

[0093] From this, we can see that there are five unknowns in the above five equations, namely y1, z1, y2, z2 and R. Therefore, the specific values ​​of these five unknowns can be solved, so that the points Q1 and Q2 through which the axis of the spiral passes can be obtained, and the position of the axis of the spiral can be determined. The distance from any point on the spiral to the axis of the spiral is the radius R.

[0094] The step of "obtaining the pitch value of the helix" further includes:

[0095] Obtain the pitch value of the helix according to the pitch parameter equation;

[0096] The pitch parameter equation is:

[0097]

[0098] Among them, dt is the pitch, T3, T4, v3 and v4 are all intermediate variables described above, which will not be repeated here.

[0099] The steps of "obtaining the starting point coordinates of the spiral line" specifically include:

[0100] Draw vertical lines from the upper corner points of the door glass near the A-pillar to the axis of the spiral line, and extend Δr1 in the reverse direction along the vertical lines to obtain the starting point coordinates Ha of the spiral line passing through the upper corner points and the lower corner points of the door glass near the A-pillar;

[0101] Draw vertical lines from the upper corner point of the door glass near the B-pillar to the axis of the spiral line, and extend Δr3 in the reverse direction along the vertical line to obtain the starting point coordinate Hb of the spiral line passing through the upper and lower corner points of the door glass near the B-pillar.

[0102] Continue reading Figure 2 The steps of “drawing a spiral line according to the spiral line axis, starting point coordinates, radius value and pitch value” specifically include:

[0103] S51, drawing a spiral line passing through the upper corner point and the lower corner point of the door glass near the A-pillar according to the spiral axis, the starting point coordinate Ha, the radius value R and the pitch value dt;

[0104] S52: Draw a spiral line passing through the upper corner point and the lower corner point of the door glass near the B-pillar according to the spiral axis, the starting point coordinate Hb, the radius value R and the pitch value dt.

[0105] The steps of “making a spiral guide line according to the trajectory of the spiral line” specifically include:

[0106] S53, making a spiral guide line on a side of the door glass close to the A-pillar according to a spiral line passing through an upper corner point and a lower corner point of the door glass close to the A-pillar;

[0107] S54, making a spiral guide line on a side of the door glass close to the B-pillar according to a spiral line passing through an upper corner point and a lower corner point of the door glass close to the B-pillar.

[0108] The door glass shaping surface is an arc rotating body, and the door glass shaping surface refers to the shaping theoretically required for the door glass production.

[0109] In a second aspect, the present invention further provides a vehicle, on which a door glass lifter is installed, and a guide rail track line of the door glass lifter is manufactured according to the manufacturing method of the spiral guide line described in any one of the above technical solutions.

[0110] In the above-described embodiments and various extended implementation modes, the present invention can use cylindrical spiral lines to fit the door glass molding surface, and provides a numerical solution for spiral line parameters, and can calculate the spiral line parameter equation and the pitch parameter equation according to the coordinates of the upper and lower corner points of the door glass close to the A-pillar and the B-pillar and the expected surface difference values ​​of each corner point. Using the spiral line parameter equation and the pitch parameter equation, the parameters required for drawing the spiral guide line can be calculated, thereby drawing two coaxial spiral lines with the same pitch passing through the upper and lower corner points of the door glass close to the A-pillar and the upper and lower corner points of the door glass close to the B-pillar. According to the door glass molding surface at the spiral line fitting, the surface difference between any point of the spiral line and the door glass molding surface is accurately calculated, and the stroke difference is zero, thereby reducing the front and rear and inside and outside shaking during the lifting and lowering of the door glass and avoiding the occurrence of jamming.

[0111] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A method for manufacturing a spiral guide wire for a door glass lifter, characterized in that: The method for making the spiral guide wire comprises: Calculate the radius of the spiral line according to the spiral line parameter equation R and the coordinates of the two points on the helix axis Q 1 and Q 2 ; According to the coordinates of two points on the axis of the spiral Q 1 and Q 2 Draw the axis of the spiral; Get the pitch value of the helix ; Get the starting point coordinates of the spiral line; According to the spiral axis, the starting point coordinates, the radius value R and the pitch value Draw a spiral line and make a spiral guide line according to the trajectory of the spiral line; "Calculate the radius of the spiral according to the spiral parameter equation R and the coordinates of the two points on the helix axis Q 1 and Q 2 The specific steps include: Get the coordinates of the upper and lower corners of the door glass near the A-pillar and the upper and lower corners near the B-pillar; The X-axis coordinate values ​​of the lower corner points on the door glass near the A-pillar and the B-pillar are respectively used as Q 1 and Q 2 The X-axis coordinate value of The coordinates of the upper and lower corners of the door glass near the A-pillar and B-pillar and Q 1 and Q 2 Substitute the coordinates of into the helix parameter equation to obtain the radius value R as well as Q 1 and Q 2 The Y-axis coordinate value and the Z-axis coordinate value; The helix parameter equation is: in, P 1 , P 2 , P 3 and P 4 They are the coordinate values ​​of the upper corner point and lower corner point on the door glass close to the A-pillar and the upper corner point and lower corner point close to the B-pillar respectively; , , and They are the distances between the upper and lower corners of the door glass near the A-pillar and the upper and lower corners near the B-pillar and the door glass molding surface. represents the norm of a vector; in, , and are all intermediate variables, j=1, 2, 3, 4 represent the upper and lower corners of the door glass close to the A-pillar, and the upper and lower corners close to the B-pillar, respectively. Q 1 The coordinates are (x1, y1, z1), Q 2 The coordinates are (x2, y2, z2), refers to x1, refers to y1, refers to z1; refers to x2, refers to y2, refers to z2; Refers to the x-coordinate value corresponding to the j-th corner point, Refers to the y coordinate value corresponding to the jth corner point, Refers to the z coordinate value corresponding to the jth corner point.

2. The method for manufacturing a spiral guide wire for a door glass lifter according to claim 1, characterized in that: "Get the pitch value of the helix The steps further include: Get the pitch value of the helix according to the pitch parameter equation ; The pitch parameter equation is: in, is the pitch value.

3. The method for manufacturing a spiral guide wire for a door glass lifter according to claim 2, characterized in that: The steps of "obtaining the starting point coordinates of the spiral line" specifically include: Draw a vertical line from the upper corner of the door glass near the A-pillar to the axis of the spiral line, and extend in the opposite direction along the vertical line. To obtain the starting point coordinates of the spiral line passing through the upper corner point and the lower corner point of the door glass near the A-pillar Ha ; Draw a vertical line from the upper corner of the door glass near the B-pillar to the axis of the spiral line, and extend in the reverse direction along the vertical line. To obtain the starting point coordinates of the spiral line passing through the upper corner point and the lower corner point of the door glass near the B pillar Hb .

4. The method for manufacturing a spiral guide wire for a door glass lifter according to claim 3, characterized in that: "According to the spiral axis, the starting point coordinates, the radius value R and the pitch value The steps of "drawing a spiral" include: According to the spiral axis, the starting point coordinates Ha , the radius value R and the pitch value dt Draw a spiral line passing through the upper and lower corners of the door glass near the A-pillar; According to the spiral axis, the starting point coordinates Hb , the radius value R and the pitch value dt Draw a spiral line through the upper and lower corners of the door glass near the B-pillar.

5. The method for manufacturing a spiral guide wire for a door glass lifter according to claim 4, characterized in that: The steps of "making a spiral guide line according to the trajectory of the spiral line" specifically include: A spiral guide line on the side of the door glass close to the A-pillar is made according to a spiral line passing through an upper corner point and a lower corner point of the door glass close to the A-pillar; A spiral guide line on the side of the door glass close to the B-pillar is made according to a spiral line passing through an upper corner point and a lower corner point on the door glass close to the B-pillar.

6. The method for manufacturing a spiral guide wire for a door glass lifter according to claim 1, characterized in that: The distance between any point on the spiral line and the door glass molding surface is less than 0.2 mm when it is above the water section plane, and less than 0.5 mm when it is below the water section plane.

7. The method for manufacturing a spiral guide wire for a door glass lifter according to claim 6, characterized in that: The door glass shaping surface is an arc rotating body.

8. A vehicle, wherein a door glass lifter is installed on the vehicle, characterized in that: The guide rail trajectory line of the door glass lifter is manufactured according to the manufacturing method of the spiral guide line according to any one of claims 1-7.

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