Marking device and use method for bending line of U-shaped parts of mining vehicles

Abstract

The present invention discloses a marking device for the bending line of a U-shaped part of a mining vehicle, comprising: a template body, the template body is provided with a long eyelet, the upper side of the template body is provided with a plurality of straight protrusions, the shape of the straight protrusions is a right triangle, one right-angled side of the straight protrusion is connected to the side of the template body, and the edge of the other right-angled side is used as a positioning side, and the positioning side is used to draw a short marking line of the bending line; the lower side of the template body is a straight side, and the straight side is used to draw a straight line segment connecting two short marking lines. The present invention also discloses a method for using the marking device. The present invention can ensure the marking accuracy of the bending line, greatly improve the marking accuracy and marking efficiency, and reduce the work intensity.

Description

Technical Field

[0001] The invention belongs to the technical field of U-shaped parts for mining trucks, and in particular relates to a marking device for bending lines of U-shaped parts for mining trucks and a use method thereof. Background Art

[0002] With the changes and upgrades in the structure of mining vehicles, a large number of U-shaped parts are used to replace the traditional plate reinforced groove structure. This has great advantages in terms of lightweighting of the carriage, but since mining vehicles mostly use high-strength plates, the parts are large in size and require strict dimensional accuracy. Due to the production limitations of existing equipment, most U-shaped parts are made by section bending using a press.

[0003] like Figure 1 As shown, it is a schematic diagram of the expansion of the U-shaped member in the prior art.

[0004] The U-shape is achieved by segmented bending, in which the number of bending lines and the quality of marking play a vital role in the quality of the final forming of the U-shaped part. Because the mining automobile parts are large in size, the number of bending lines is relatively large and needs to be evenly distributed. In order to ensure the quality of the U-shaped parts after bending, the bending lines are generally marked with a steel ruler to find the two points of each bending line one by one, and finally connect the lines to form the bending lines.

[0005] Since the spacing between the bending lines is not an integer after the bending lines are evenly divided, and the scale accuracy of the steel ruler is not that high, the marking is inaccurate. In addition, due to the large size of the parts, multiple or even dozens of bending lines are required. Manual marking one by one is inefficient and prone to ruler fatigue, thereby increasing the probability of marking errors. The defects of manual marking with a steel ruler are as follows:

[0006] 1. Since the spacing between the bending lines is not an integer after being evenly divided, and the scale accuracy of the steel ruler is not that high, the marking is inaccurate.

[0007] 2. As the parts are large, multiple or even dozens of bending lines are required. Manual marking one by one is inefficient and prone to ruler fatigue, thus increasing the probability of marking errors. Summary of the invention

[0008] In order to solve the defects of low marking efficiency using steel ruler, difficulty in ensuring non-integer dimensional accuracy, and marking errors caused by ruler reading fatigue, the present invention provides a marking device for the bending line of a U-shaped part of a mining truck and a method for using the same.

[0009] To achieve the above purpose, the technical solution used in the present invention is:

[0010] A marking device for the bending line of a U-shaped part of a mining vehicle comprises: a template body, the template body is provided with a long eyelet, the upper side of the template body is provided with a plurality of straight protrusions, the shape of the straight protrusions is a right triangle, one right-angled side of the straight protrusion is connected to the side of the template body, and the edge of the other right-angled side is used as a positioning side, and the positioning side is used to draw a short marking line for the bending line; the lower side of the template body is a straight side, and the straight side is used to draw a straight line segment connecting two short marking lines.

[0011] Furthermore, the method further includes unfolding the steel plate, and drawing the bending line on the unfolded steel plate.

[0012] Furthermore, the spacing between the linear protrusions is set according to the spacing of the bending lines, and the positions of the linear protrusions give the marking positions of the bending lines.

[0013] Furthermore, the template body and the linear protrusions have the same thickness, and the thickness of the template body is 2mm-6mm.

[0014] Furthermore, the linear protrusion is used to determine the position of the bending line, and the end of the linear protrusion adopts an arc transition.

[0015] Furthermore, the shape of the linear protrusion is L-shaped, one end of the linear protrusion is connected to the template body, and a gap is formed between the L-shaped linear protrusion and the template body, and the width of the gap is the length of the short marking line.

[0016] The method of using the marking device includes:

[0017] Place the marking device on the unfolded steel plate of the U-shaped part according to the positioning reference, and the positioning reference is the straight edge of the press-bent part; close to the upper edge of the unfolded steel plate, the straight protrusion points to the upper edge, and use a marking pen to mark the first press-bending line according to the positioning feature and the positioning edge;

[0018] The marking device is close to the lower edge of the unfolded steel plate, and the straight line protrusion points to the upper edge; a short marking line for the second bending line is drawn according to the positioning features and positioning edges on the template;

[0019] Align the straight edge of the template body with the two short marked lines in the same order, and use a straight line segment to connect the two short marked lines to complete the drawing of the bending line.

[0020] Preferably, after the drawing of the first bending line is completed, subsequent marking short lines and bending lines are drawn in sequence until the drawing of all bending lines is completed.

[0021] Preferably, the positioning reference is a straight edge of the curved part.

[0022] Preferably, the positioning reference is a positioning reference of a bent part, and the positioning reference of the bent part is a straight edge surface in the bending direction.

[0023] The technical effects of the present invention include:

[0024] 1. Ensure the precision of marking and greatly improve the accuracy of marking;

[0025] 2. The efficiency of marking is greatly improved. The more bending lines there are, the more obvious the efficiency improvement is.

[0026] 3. It reduces the probability of marking errors and the intensity of work, and avoids marking errors caused by fatigue in reading the ruler. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the expansion of a U-shaped member in the prior art;

[0028] Figure 2 It is a structural schematic diagram of the scribing device in the present invention;

[0029] Figure 3 is a schematic diagram of drawing a bending line using a marking device in the present invention;

[0030] Figure 4 It is a schematic diagram of connecting the bending lines using the marking device in the present invention. DETAILED DESCRIPTION

[0031] The following description sufficiently illustrates specific embodiments of the invention to enable those skilled in the art to practice and reproduce the invention.

[0032] like Figure 2 The figure is a schematic diagram of the structure of the scribing device in the present invention.

[0033] The marking device for the bending line of the U-shaped part of a mining vehicle comprises: a template body 1, a plurality of linear protrusions 2 are arranged on the side of the template body 1, the spacing between the linear protrusions 2 is set according to the spacing of the part bending lines, and the position of the linear protrusions 2 gives the marking position of the bending line.

[0034] The shape of the linear protrusion 2 is a right triangle, one right-angled side of the linear protrusion 2 is connected to the side of the template body 1, and the edge of the other right-angled side is used as a positioning side, and the positioning side is the marking position of the bending line, which is used to draw the marking short line of the bending line. The marking position is marked with two sections of marking short lines. The shape of the linear protrusion 2 can also be L-shaped, and one end of the linear protrusion 2 is connected to the template body 1. A gap is formed between the L-shaped linear protrusion 2 and the template body 1. The width of the gap is the length of the marking short line 5, so as to limit and unify the length of the marking short line 5.

[0035] The marking device is made by CNC programming to ensure the accuracy of drawing the bending line. The marking device is an aluminum alloy thin plate. Such a template is light and easy to operate. In the present invention, the template body 1 and the linear protrusion 2 are of the same thickness. The thickness of the template body 1 is any specification between 2mm-6mm, and 3mm is further preferred. At the same time, the material is not limited to aluminum alloy, and can also be a steel plate.

[0036] The straight protrusion 2 is used to determine the position of the bending line, and the end of the straight protrusion 2 adopts an arc transition to play a safety protection role; the template body 1 is provided with 4 long eye holes 3, and the long eye holes 3 are used for hanging the template when it is placed; the lower part of the template body 1 is a straight edge 4, and the straight edge 4 is used to draw the straight segment of the bending line. The straight segment is used to connect the marking short lines 5 at the same position at the upper and lower parts of the part, thereby completing the marking of the entire bending line.

[0037] like Figure 3 As shown in FIG. 1 , it is a schematic diagram of using a marking device to draw a bending line in the present invention; Figure 4 FIG. 1 is a schematic diagram of connecting the bending lines using the marking device in the present invention.

[0038] The method of using the marking device includes:

[0039] Step 1: Place the marking device on the unfolded steel plate 6 of the U-shaped part according to the positioning reference, close to the upper edge of the unfolded steel plate 6, with the straight protrusion 2 pointing to the upper edge, and use a marking pen (talcum pen) to mark the first bending line according to the positioning feature and the positioning edge.

[0040] The first drawn short marking line 5 is usually the first position point of the bending line, and the right angle side of the straight protrusion 2 at different positions can be selected to draw the first position point of the bending line. The positioning reference is the straight edge of the bending part, and further, the positioning reference is the positioning reference of the bending part, and the positioning reference of the bending part is the straight edge surface in the bending direction.

[0041] Step 2: Place the marking device on the unfolded steel plate 6 of the U-shaped part according to the positioning reference, close to the lower edge of the unfolded steel plate 6, with the straight protrusion 2 pointing to the upper edge; use a talcum pen to mark the second bending line according to the positioning features and positioning edges on the template;

[0042] The second short marking line 5 is usually the second position point of the bending line, and the right angle side of the linear protrusion 2 at different positions can be selected to draw the second position point of the bending line. Use a talcum pen to mark the upper and lower positions of the bending line on the part according to the positioning features and positioning edges of the marking device.

[0043] Step 3: Align the straight edge 4 of the template body 1 with the two short marked lines 5 in the same order, and use a straight line segment to connect the two short marked lines 5 to complete the drawing of a bending line.

[0044] Step 4: Draw subsequent short marking lines and bending lines in sequence until all bending lines are drawn.

[0045] The terms used in the present invention are illustrative and exemplary, rather than restrictive. Since the present invention can be implemented in various forms without departing from the spirit or essence of the technical solution, it should be understood that the above embodiments are not limited to any of the aforementioned details, but should be widely interpreted within the spirit and scope defined by the attached claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the attached claims.

Claims

1. A method for using a marking device for a U-shaped bending line of a mining vehicle, characterized in that: The marking device comprises: a template body and an unfolded steel plate. The template body is provided with long eyelets. A plurality of linear protrusions are provided on the upper side of the template body. The template body and the linear protrusions are of the same thickness, and the thickness of the template body is 2mm-6mm. The linear protrusion is in the shape of a right triangle. One right-angled side of the linear protrusion is connected to the side of the template body, and the edge of the other right-angled side is used as a positioning side. The positioning side is used to draw a short marking line for the bending line. The lower side of the template body is a straight side. The straight side is used to draw a straight line segment connecting two short marking lines at the same position. The spacing between the linear protrusions is set according to the spacing of the bending lines, and the position of the linear protrusion gives the marking position of the bending line. The shape of the linear protrusion is L-shaped. One end of the linear protrusion is connected to the template body. A gap is formed between the L-shaped linear protrusion and the template body. The width of the gap is the length of the short marking line. The bending line is drawn on the unfolded steel plate. Usage methods include: The marking device is placed on the unfolded steel plate of the U-shaped part according to the positioning reference, the positioning reference is the positioning reference of the bending part, and the positioning reference of the bending part is the straight edge in the bending direction; close to the upper edge of the unfolded steel plate, the straight protrusion points to the upper edge, and the marking short line of the first bending line is drawn with a marking pen according to the positioning feature and the positioning edge; after the first bending line is drawn, the subsequent marking short lines and bending lines are drawn in sequence until all bending lines are drawn; The marking device is close to the lower edge of the unfolded steel plate, and the straight line protrusion points to the upper edge; a short marking line for the second bending line is drawn according to the positioning features and positioning edges on the template; Align the straight edge of the template body with the two short marked lines in the same order, and use a straight line segment to connect the two short marked lines to complete the drawing of the bending line.

2. The method of use according to claim 1, characterized in that: The straight protrusion is used to determine the position of the bending line, and the end of the straight protrusion adopts an arc transition.

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