Workpiece surface machining area marking device

Abstract

The utility model relates to a workpiece surface machining area marking device. The device comprises measuring pieces, every two adjacent measuring pieces are rotationally connected, length scale marks are arranged on the measuring pieces, and angle scale marks are arranged at the ends of the measuring pieces; the supporting piece is used for attaching the measuring piece to the surface of the workpiece; and the marking pen is connected with the measuring piece. The device provided by the utility model is convenient, quick and efficient to operate; the structure is simple, and the application range is wide. The device is used for marking a workpiece object, so that the subsequent machining operation precision is higher, the machining error is reduced, and the waste of raw materials and working hours is reduced.

Description

Technical Field

[0001] This application relates to the field of mechanical design and processing technology, and in particular to a marking device for the processing area on the surface of a workpiece. Background Technology

[0002] During mold design and development, it is often necessary to perform appropriate welding repairs to compensate for defects caused by initial design flaws or manufacturing errors. Before welding, the areas on the mold to be repaired need to be marked. Current marking methods are either not precise enough, not efficient enough, or too costly. Summary of the Invention

[0003] This application provides a workpiece surface machining area marking device, which improves the accuracy and efficiency of marking the machining area on the workpiece surface, and the device has low cost, thus at least partially solving the above-mentioned technical problems.

[0004] To achieve the above objectives, a workpiece surface machining area marking device is provided for marking the machining area on the workpiece surface, comprising:

[0005] A measuring component, with two adjacent measuring components rotatably connected, a length scale line provided on the measuring component, and an angle scale line provided at the end of the measuring component;

[0006] Support member for attaching the measuring member to the surface of the workpiece; and

[0007] A marking pen is connected to the measuring device.

[0008] Optionally, in some embodiments of this application, the length of the measuring element is one unit length.

[0009] Optionally, in some embodiments of this application, the length of the measuring element is greater than one unit length, and two adjacent measuring elements are slidably connected.

[0010] Optionally, in some embodiments of this application, the measuring element is provided with a slot along its length, and two adjacent measuring elements are connected by fasteners passing through the slot to form a relatively fixed or relatively sliding connection.

[0011] Optionally, in some embodiments of this application, the length scale lines on the measuring element take the axis of the rotational connection position of two adjacent measuring elements as the starting point or ending point.

[0012] Optionally, in some embodiments of this application, the reference line of the angle scale line at the end of the measuring element is parallel to the length direction of the measuring element and passes through the axis of the rotational connection position of two adjacent measuring elements.

[0013] Optionally, in some embodiments of this application, a level is provided on the measuring element.

[0014] Optionally, in some embodiments of this application, the level is disposed on a first surface of the measuring element facing away from the workpiece surface.

[0015] Optionally, in some embodiments of this application, the measuring element has at least two levels, which are arranged in parallel and respectively located on opposite sides of the first surface.

[0016] Optionally, in some embodiments of this application, the level is a bubble level.

[0017] Optionally, in some embodiments of this application, the support member has a retractable structure.

[0018] Optionally, in some embodiments of this application, the support member is a structure in which adjacent sub-support members are sequentially nested, or the support member is a structure that can be elastically stretched and shaped.

[0019] Optionally, in some embodiments of this application, an adsorption structure is provided at the bottom of the support member.

[0020] Optionally, in some embodiments of this application, the adsorption structure is one of magnetic adsorption, viscous adsorption, and vacuum adsorption.

[0021] Optionally, in some embodiments of this application, the measuring element is provided with a slot along its length, and the top of the support element is provided with a fastener, which passes through the slots of two adjacent measuring elements to form a connection between the two adjacent measuring elements.

[0022] Optionally, in some embodiments of this application, the marking pen is movably connected to the measuring device.

[0023] Optionally, in some embodiments of this application, the marking pen is slidably or detachably connected to the measuring element via a snap-fit ​​connector.

[0024] Optionally, in some embodiments of this application, the snap-fit ​​member includes a first snap-fit ​​portion for snapping onto opposing first and second surfaces on the measuring member.

[0025] Optionally, in some embodiments of this application, the snap-fit ​​member includes a second snap-fit ​​portion for snapping onto at least a portion of the outer peripheral surface of the marker pen.

[0026] Optionally, in some embodiments of this application, the marking pen can apply light, solid markings, or liquid markings to the surface of the workpiece.

[0027] Optionally, in some embodiments of this application, the measuring element and the marking pen cooperate to determine the contour of the machining area on the workpiece surface, wherein: there are at least two marking pens, and all the marking pens are located on the same side of the contour; or, there is one marking pen, and the marking pen is always on the same side of the measuring element when it moves relative to the measuring element.

[0028] Optionally, in some embodiments of this application, the marker pen has a retractable structure.

[0029] Optionally, in some embodiments of this application, the retractable structure of the marker pen includes a movable pull rod.

[0030] Optionally, in some embodiments of this application, the retractable structure of the marker pen includes a retractable cord.

[0031] Optionally, in some embodiments of this application, the retractable structure of the marker pen includes an elastically stretched shaping rod.

[0032] The device provided in this application eliminates the need for repeated measurements between the workpiece drawing and the actual workpiece during operation. It only requires determining the relative positions of each measuring component based on parameters such as the length and angle of the outline on the workpiece drawing, making operation convenient, quick, and efficient. Secondly, the device has a simple structure, is easy to maintain on-site, and can adapt to harsh production environments, resistant to high temperatures, vibrations, dust, and humidity, thus having a wide range of applications. Furthermore, by utilizing rotating measuring components, the device theoretically allows for stepless adjustment of the relative positions of each component, ensuring a higher degree of matching between the shape of each component and the outline on the workpiece drawing, achieving a perfect fit with the actual processing requirements. Therefore, using this device to mark the actual workpiece can improve the accuracy of subsequent processing operations, reduce processing errors, and minimize waste of materials and time.

[0033] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0036] Figure 1 This is a schematic diagram of the machining area on the workpiece surface marked on the workpiece drawing in related technologies.

[0037] Figure 2 This is a schematic diagram of the workpiece surface machining area marking device provided in an exemplary embodiment of this application;

[0038] Figure 3 This is a schematic diagram of the machining area on the workpiece surface marked on the workpiece drawing provided in an exemplary embodiment of this application.

[0039] Figure 4 This is an assembly diagram illustrating the application of the workpiece surface machining area marking device provided in an exemplary embodiment of this application to a physical workpiece to mark the machining area.

[0040] Figure 5 This is a front view of the workpiece surface processing area marking device provided in an exemplary embodiment of this application.

[0041] Figure 6 This is a top view of the workpiece surface machining area marking device provided in an exemplary embodiment of this application.

[0042] Figure 7 This is a side view of the workpiece surface processing area marking device provided in an exemplary embodiment of this application, and the structure is cut open.

[0043] Figures 8 to 11 These are schematic diagrams of different partial structures of the workpiece surface processing area marking device provided in an exemplary embodiment of this application.

[0044] Explanation of reference numerals in the attached figures:

[0045] 10. Measuring component; 100. Slot; 101. First surface; 102. Second surface; 11. End; 13. Length scale line; 15. Angle scale line; 150. Baseline; 151. Angle line; 152. Coincident line; 17. Fastener; 170. Shaft; 19. Level;

[0046] 20. Support component; 20a, 20b, 20c. Sub-support components; 201. Top; 202. Bottom; 21. Adsorption structure;

[0047] 30. Marking pen; 301. Outer peripheral surface; 31. Snap-fit ​​component; 311. First snap-fit ​​part; 312. Second snap-fit ​​part;

[0048] 800, 900: Outline; 801, 901: Machining area; 802: Anchor point; 902: Dimensional data. Detailed Implementation

[0049] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0050] like Figure 1 As shown in the diagram, in a mold drawing, the processed outline 900 defines the processing area 901 on a certain surface of the actual mold that needs to be repaired by welding. Next to the outline 900, specific dimensional data 902 are also shown, such as A1, A2, A3, A4, A5, and A6 representing specific values. The operator needs to mark the corresponding part on the actual mold to be repaired, i.e., the area to be repaired, according to the relevant markings on the mold drawing, to prepare for the subsequent welding process. However, existing marking methods cannot achieve a good balance between accuracy, efficiency, and cost-effectiveness.

[0051] As a first aspect of this application, reference is made to Figure 2 As shown, this application provides a workpiece surface machining area marking device (hereinafter referred to as the device), which can be used with reference to... Figure 3 The machining area 801 shown on the workpiece drawing is marked on the actual workpiece. For example... Figure 4 The diagram shows the application of this device to mark physical workpieces.

[0052] It is understood that this device can be used to mark processing areas on various workpieces and products. This application will use a mold as an example below, demonstrating how this device can be used to mark a surface of the mold. The subsequent processing type for the marked processing area on the workpiece surface can be welding, grinding, etc. In other words, the subsequent processing type for the marked processing area on the workpiece surface using this device is not limited; welding will be used as an example below.

[0053] like Figure 2As shown, the device includes a measuring element 10, a support element 20, and a marking pen 30. Two adjacent measuring elements 10 are rotatably connected. The support element 20 is used to attach the measuring elements 10 to the surface of the workpiece. The marking pen 30 cooperates with the measuring elements 10 to determine the contour of the machining area on the workpiece surface. The measuring elements 10 are provided with length scale lines 13, and the end 11 of the measuring elements 10 is provided with angle scale lines 15. By referring to the scales of the length scale lines 13 and the angle scale lines 15, the relative positional relationship of each measuring element 10 can be adjusted according to the length, angle, and other parameters of each line segment of the contour line 800 of the machining area 801 on the workpiece drawing, so that each connected measuring element 10 has the same shape as the contour line 800, or at least partially the same shape. After the relative positions of each measuring element 10 are adjusted, the support element 20 is used to attach each measuring element 10 to the actual workpiece, so that the position of the measuring elements 10 on the workpiece surface is relatively fixed. Then, the marking pen 30 connected to the measuring elements 10 can be used to apply markings to the workpiece surface. The marker identifies the location points on the workpiece surface. By connecting multiple location points into a line, the outline of the processed area on the workpiece surface can be marked and drawn.

[0054] In actual operation, this device eliminates the need for repeated measurements between the workpiece drawing and the actual workpiece. The relative positions of each measuring component 10 can be determined simply by analyzing the lengths and angles of the line segments along the 800° outline on the workpiece drawing. This makes operation convenient, quick, and efficient. Secondly, the device has a simple structure, is easy to maintain on-site, and can adapt to harsh production environments, remaining unaffected by high temperatures, vibrations, dust, and humidity, thus having a wide range of applications. Furthermore, compared to… Figure 1 and Figure 3 As shown by the outlines 800 and 900, outline 800 is closer to the boundary of the actual machining area 801 (shown as a gray area in the figure by shading), while outline 900 is farther from the boundary of the actual machining area. This is because the device utilizes rotating measuring components 10, which theoretically allow for stepless adjustment of the relative positions of each measuring component 10. This enables the shape of each measuring component 10 to achieve a higher degree of matching with outline 800 and a better fit with the actual machining area. Therefore, using this device to mark the workpiece can improve the accuracy of subsequent machining operations, reduce machining errors, and minimize waste of materials and time.

[0055] The length scale line 13 on the measuring element 10 is used to measure and characterize the extension length of the contour line 800. Theoretically, if the length of the measuring element 10 is one unit length, the measuring element 10 itself can serve as a characterization method for the length scale line 13. For example, if the length of a certain broken line of the contour line 800 is N, then only N measuring elements 10 are needed to characterize the length of that broken line of the contour line 800. In this case, adjacent measuring elements 10 are rotatably connected. When different broken lines need to be characterized, the adjacent measuring elements 10 are rotated relative to each other to match the extension direction of different broken lines.

[0056] To ensure marking accuracy, the unit length of the length scale line 13 can be set to millimeters. Of course, the unit length can be reasonably set according to the actual dimensions of the workpiece, for example, it could be centimeters, decimeters, etc. In applications where the unit length is at the millimeter level, if the length of the measuring component 10 is set to a unit length, i.e., at the millimeter level, its manufacturing precision would be too high. Therefore, in some embodiments, the length of the measuring component 10 is greater than one unit length. To accurately characterize the length of each broken line of the contour line 800, adjacent measuring components 10 can be rotatably connected while also forming a sliding connection. For example... Figure 8 As shown, two adjacent measuring components 10 are slidably connected. The rotational connection position of the two adjacent measuring components 10 can be adjusted according to the length of the broken line of the contour line 800, so that the length between the axes 170 of the two adjacent rotational connection positions represents the length of the broken line. Thus, the length of the broken line can be obtained by directly measuring the length between the axes 170 of the two rotational connection positions by referring to the length scale line 13 on the measuring component 10.

[0057] To more conveniently and intuitively represent the length of the broken line, the length scale line 13 on the measuring element 10 can be made to start or end at the axis 170 of the rotational connection position of two adjacent measuring elements 10. Figure 8 For example, when two adjacent axes 170 are needed to represent the two endpoints A and B of a broken line, since point A is the starting point of the length scale line 13, the value of the length scale line 13 corresponding to point B is the specific length value, and no further conversion is needed. Accordingly, Figure 8 If the endpoint where point A is located is the starting point of the length scale line 13 on the measuring element 10, then the other endpoint of the measuring element 10 opposite to point A is the ending point of the length scale line 13.

[0058] like Figure 8As shown, the measuring element 10 has a slot 100 along its length. Two adjacent measuring elements 10 are connected by fasteners 17 passing through the slot 100 to form a relatively fixed or relatively sliding connection. The fastener 17 can be a stud and nut. For example, when it is necessary to fix the included angle and rotational connection position of two adjacent measuring elements 10, the stud can be passed through the slot 100 and locked with a nut, using clamping force to fix the two adjacent measuring elements 10. When it is necessary to adjust the relative position of the two adjacent measuring elements 10, the stud and nut can be loosened. The fastener 17 can also be other types of components such as a resilient pin. For example, a generally conical resilient pin passes through the slot 100, and its elastic compression deformation generates friction to fix the two adjacent measuring elements 10. When it is necessary to adjust the relative position of the two adjacent measuring elements 10, the resilient pin is pulled to release the compression deformation force, which can then cause the two adjacent measuring elements 10 to slide, rotate, or both simultaneously.

[0059] like Figure 8 As shown, in some embodiments, a level 19 is provided on the measuring component 10. The level 19 can be used to characterize the levelness of the measuring component 10. If the measuring component 10 is not placed on a horizontal plane, the contour line it characterizes may be offset in space, thus affecting the accuracy of the final contour line marking. When the workpiece surface is non-planar, the marking of the contour line is more complex. Setting a level 19 allows for real-time knowledge of the levelness of the measuring component 10 in space and enables adjustments to be made at any time, ensuring the accuracy of the marking results.

[0060] In some embodiments, the level 19 is a bubble level, which is convenient and intuitive to use and observe.

[0061] In some embodiments, the level 19 is disposed on a first surface 101 of the measuring element 10 facing away from the workpiece surface. Generally, the first surface 101 faces the operator, making it easier for the operator to observe. At the same time, the first surface 101 also has relatively large installation space, facilitating the placement of the level 19. It can be understood that in other embodiments, the level 19 may also be disposed on a side edge of the measuring element 10, or suspended on a second surface 102 of the measuring element 10 facing the workpiece surface (see...). Figure 11 )superior.

[0062] like Figure 8As shown, the measuring element 10 has at least two levels 19, which are arranged in parallel and respectively located on opposite sides of the first surface 101. In an embodiment with a slot 100, the levels 19 are positioned on opposite sides of the slot 100. The extension length of the levels 19 can cover most of the length of the measuring element 10, making the judgment of the levelness of the measuring element 10 more accurate. In other embodiments, two or more levels 19 may be provided along the length direction of the measuring element 10, spaced apart from each other. By observing multiple levels 10 along the length direction, the accuracy of the judgment of the levelness of the measuring element 10 can also be ensured.

[0063] The angle scale line 15 of the end 11 of the measuring element 10 is used to measure the included angle between two adjacent measuring elements 10. Making the included angle between two adjacent measuring elements 10 equal to the included angle between two corresponding adjacent broken lines on the workpiece drawing is one of the conditions to ensure that the outline of the machining area is accurately marked on the workpiece surface.

[0064] Also refer to Figure 9 and Figure 10 The reference line 150 of the angle scale line 15 at the end 11 of the measuring element 10 is parallel to the length direction of the measuring element 10 and passes through the axis 170 of the rotational connection position of two adjacent measuring elements 10.

[0065] The reference line 150 refers to the zero-degree line of the angle scale 15. Starting from the reference line 150, each unit scale line passed clockwise or counterclockwise represents an increase of the corresponding unit angle. In some embodiments, each unit scale line can represent 5 degrees, that is, the unit angle is 5 degrees. It can be understood that the unit angle is not limited to this in other embodiments.

[0066] like Figure 9 As shown, the included angle between two adjacent measuring elements 10 (referred to as 10a and 10b for ease of description) is the included angle between the two baselines 150. Based on geometric reasoning, find the angle line 151 in measuring element 10b that is collinear with the baseline 150 on measuring element 10a. Then calculate the included angle between the baseline 150 and the angle line 151 in measuring element 10b; this is the included angle between the two adjacent measuring elements 10a and 10b.

[0067] The method described above for determining the included angle between two adjacent measuring components 10a and 10b is problematic if the axis 170 of the rotational connection between measuring components 10a and 10b is far from the end 11 of measuring component 10a. Finding the angle line 151 then becomes difficult, making it hard to ensure the accuracy of the observation. Therefore, in some embodiments, such as... Figure 10As shown, based on geometric reasoning, find the coincident line 152 on the measuring component 10b that coincides with a certain length scale line 13 on the measuring component 10a. This coincident line 152 is also perpendicular to the length direction of the measuring component 10a. Calculate the angle between the baseline 150 in the measuring component 10b and the coincident line 152, and add 90 degrees to get the angle between the two adjacent measuring components 10a and 10b.

[0068] Also refer to Figure 2 ,as well as Figures 5 to 7 In some embodiments, the support member 20 has a telescopic structure. When the workpiece surface is a three-dimensional curved surface or an irregular surface, the marking of the contour lines of the processing area is more complex. To ensure marking accuracy, while ensuring the levelness of the measuring member 10, the support member 20 can also be made telescopic. In this way, the support member 20 can adapt to the specific shape of the workpiece surface and expand and contract, so that the measuring member 10 can be better attached to the workpiece surface by the support member 20.

[0069] The telescopic structure of the support member 20 can take many forms. For example, the support member 20 includes at least two sub-support members, with adjacent sub-support members nested together in sequence. Figure 2 and Figure 5 The structure shown has three sub-supports 20a, 20b, and 20c. The bottom of sub-support 20a is fitted onto the outer periphery of the top of sub-support 20b, and the bottom of sub-support 20b is fitted onto the outer periphery of the top of sub-support 20c. Each sub-support 20a, 20b, and 20c can be stretched or contracted. The telescopic structure of support 20 can also be an elastically stretchable and shape-retaining structure, such as a corrugated pipe-like structure, which can stably maintain a predetermined length and a certain rigidity whether stretched or contracted to meet the requirements of firmly attaching the measuring component 10 to the surface of the workpiece.

[0070] In some embodiments, the bottom 202 of the support member 20 is provided with an adsorption structure 21. The adsorption structure 21 allows the support member 20 to adhere better to the surface of the workpiece. The adsorption structure 21 can be magnetic adsorption, adhesive adsorption, or vacuum adsorption. Figure 2 The adsorption structure 21 shown is a vacuum disk. By pressing the adsorption structure 21 toward the workpiece surface along the extension direction of the support member 20, the air inside the adsorption structure 21 can be expelled. The vacuum adsorption force formed thereby can make the support member 20 firmly attached to the workpiece surface.

[0071] In some embodiments, a fastener 17 may be provided on the top 201 of the support member 20, thereby connecting the fastener 17 to the measuring member 10. In embodiments where the measuring member 10 has a slot 100, the fastener 17 passes through the slots 100 of two adjacent measuring members 10 to connect the two adjacent measuring members 10. In other embodiments, such as Figure 5 As shown, the fastener 17 passing through the slots 100 of two adjacent measuring members 10 allows for a direct connection between the two adjacent measuring members 10. In other words, the fastener 17 does not need to be located on the top 201 of the support member 20. Alternatively, the number of support members 20 can be set according to actual needs and does not need to be the same as the number of measuring members 10.

[0072] In some embodiments, such as Figure 5 and Figure 7 As shown, the marking pen 30 can be fixed to the second surface 102 of the measuring member 10. Depending on the length of the measuring member 10, more than one marking pen 30 can be provided on the measuring member 10, thus facilitating the application of markings by the marking pen 30 at different positions, thereby providing more position points for marking the contour of the processing area.

[0073] In other embodiments, such as Figure 2 and Figure 11 As shown, the marker pen 30 is movably connected to the measuring element 10. When the marker pen 30 needs to be used in different positions, it can be moved relative to the measuring element 10 to the desired position, thus eliminating the need to set up multiple marker pens 30.

[0074] like Figure 11 As shown, in one embodiment, the marker pen 30 is slidably or detachably connected to the measuring member 10 via a snap-fit ​​member 31. The snap-fit ​​member 31 includes a first snap-fit ​​portion 311 for snapping onto opposing first surfaces 101 and second surfaces 102 on the measuring member 10. Further, the snap-fit ​​member 31 includes a second snap-fit ​​portion 312 for snapping onto at least a portion of the outer peripheral surface 301 of the marker pen 30.

[0075] The marking pen 30 can apply light, solid, or liquid markings to the surface of the workpiece. For example, the marking pen 30 can be a laser pointer, projecting a laser beam onto the workpiece surface. The operator can then use other tools, such as a scribing pen or a cutting tool, to connect the light spots on the workpiece surface to mark and draw the outline of the processing area. Alternatively, the marking pen 30 can be an inkjet pen, directly projecting ink or pigment onto the workpiece surface to form a mark. The marking pen 30 can also project powder particles onto the workpiece surface; the marks left by the powder particles impacting the workpiece surface can also serve as markings. Connecting the points where the markings are located completes the marking and drawing of the outline of the processing area.

[0076] In some embodiments, to ensure marking accuracy, during the marking operation, the marking pen 30 should always be located on the same side of the contour of the processing area, such as the inside or outside of the contour. When there is one marking pen 30, the marking pen 30 is movably connected to the measuring element 10, and when the marking pen 30 moves relative to the measuring element 10, it is always on the same side of the measuring element 10. When there are two or more marking pens 30, all the marking pens 30 are located on the same side of the measuring element 10, such as the inside or outside of the contour of the corresponding processing area.

[0077] Regardless of which side of the contour the marking pen 30 is on, the influence of the distance between the center of the marking pen 30 and the width centerline of the measuring part 30 on the deviation of the marking in the machining area should be considered.

[0078] In some embodiments, the marker pen 30 has a retractable structure. The retractability of the marker pen 30 allows it to be positioned closer to the workpiece surface as needed, improving the positional accuracy of the markings applied to the workpiece surface. The retractable structure of the marker pen 30 may include a movable pull rod, a telescopic pull cable, or an elastic tension rod.

[0079] The operation method for forming marks for determining the processing area on the surface of a workpiece using the apparatus provided in any of the above embodiments is described in detail below.

[0080] The method includes: determining anchor points on the surface of the workpiece according to the machining drawings; aligning one of the support members with the anchor points; determining the relative positional relationships of each measuring member according to the machining drawings; fixing each measuring member to the surface of the workpiece using the support members; and marking position points on the surface of the workpiece using a marker pen, the position points being used to determine the outline of the machining area.

[0081] Specifically, the anchor point can be an existing hole on the surface of the workpiece, or a pre-machined location. (See reference...) Figure 3As shown, anchor points 802 formed by the intersection of two lines can be drawn on the workpiece drawing. The number of anchor points 802 can be one or more, depending on the specific shape and specifications of the workpiece. After aligning one of the support members 20 with the anchor point 802, the relative positions of each measuring member 10 can be locked according to the machining drawing. Then, the measuring members 10 are attached to the workpiece surface using the support member 20, and finally, markings are applied to the workpiece surface using a marking pen 30. For example, Figure 3 The lengths of each broken line of the outline 800 in the machining drawing are shown by B1, B2, B3, B4, and B5, and the included angles of each adjacent broken line are shown by α1, α2, α3, α4, and α5.

[0082] As mentioned above, when determining the relative positional relationship of each measuring component 10, it can be determined by rotating any two adjacent measuring components 10 and adjusting the included angle between them, or by adjusting the position of the axis 170 connecting any two adjacent measuring components 10. When the length of a measuring component 10 is greater than the unit length of the length scale line 13, the position of the axis 170 connecting two adjacent measuring components 10 can be adjusted to represent the length of each broken line of the contour line 800 on the machining drawing. Then, by adjusting the included angle of the rotating connection between two adjacent measuring components 10, the included angle of two adjacent broken lines of the contour line 800 on the machining drawing can be represented. The relative positional relationship of each measuring component 10 is determined in this way.

[0083] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0084] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0085] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0086] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A workpiece surface machining area marking device, used to mark the machining area on the workpiece surface, characterized in that, The utility model relates to a length-measuring device for workpiece surface, comprising: a length-measuring element, two adjacent length-measuring elements are rotatably connected, a length scale is arranged on the length-measuring element, and an angle scale is arranged on the end of the length-measuring element; a support element for attaching the length-measuring element to the workpiece surface; and a marking pen connected to the length-measuring element. The length of the length-measuring element is one unit length.

2. The workpiece surface processing area marking device of claim 1, wherein The length of the length-measuring element is greater than one unit length, and two adjacent length-measuring elements are slidably connected.

3. The workpiece surface processing area marking device of claim 1, wherein, The length-measuring element is provided with a slot along the length direction, and a fastener is arranged through the slot of two adjacent length-measuring elements to form a relative fixed or relative sliding connection.

4. The workpiece surface processing area marking device of claim 3, wherein, The length scale on the length-measuring element starts or ends at the axis of the rotatable connection position of two adjacent length-measuring elements; and / or 5. The workpiece surface processing zone marking apparatus of claim 1, wherein, The reference line of the angle scale on the end of the length-measuring element is parallel to the length direction of the length-measuring element and passes through the axis of the rotatable connection position of two adjacent length-measuring elements. A level is arranged on the length-measuring element.

6. The workpiece surface processing zone marking device of claim 1, wherein The level is arranged on the first surface of the length-measuring element facing away from the workpiece surface.

7. The workpiece surface processing area marking device of claim 6, wherein There are at least two levels on the length-measuring element, and the two levels are arranged in parallel and on opposite sides of the first surface.

8. The workpiece surface processing area marking device of claim 7, wherein, The level is a bubble level.

9. The workpiece surface processing area marking device of claim 6, wherein, The support element has an extendable structure.

10. The workpiece surface processing area marking device of any one of claims 1 to 9, wherein The support element has a structure in which adjacent sub-support elements are sequentially sleeved, or the support element has an elastically stretchable and shaped structure.

11. The workpiece surface processing area marking device of claim 10, wherein, The bottom of the support element is provided with an adsorption structure.

12. The workpiece surface processing area marking device of any one of claims 1 to 9, wherein The adsorption structure is one of magnetic adsorption, adhesive adsorption, and vacuum adsorption.

13. The workpiece surface processing area marking device of claim 12, wherein, The length-measuring element is provided with a slot along the length direction, and the top of the support element is provided with a fastener arranged through the slot of two adjacent length-measuring elements to form a connection between the two adjacent length-measuring elements.

14. The workpiece surface processing area marking device of any one of claims 1 to 9, wherein The marking pen is movably connected to the length-measuring element.

15. The workpiece surface processing zone marking device of any one of claims 1 to 9, wherein, The marking pen is slidably connected or detachably connected to the length-measuring element through a clamping element.

16. The workpiece surface processing area marking apparatus of claim 15, wherein The clamping element includes a first clamping part for clamping opposite first and second surfaces of the length-measuring element.

17. The workpiece surface processing area marking device of claim 16, wherein, The clamping element includes a second clamping part for clamping at least part of the outer peripheral surface of the marking pen.

18. The workpiece surface processing area marking apparatus of claim 17, wherein, The marking pen can apply light, solid-state markers, or liquid markers to the workpiece surface.

19. The workpiece surface processing zone marking device of any one of claims 1 to 9, wherein, The length-measuring element and the marking pen are used together to determine the profile of the machining area of the workpiece surface, wherein:

20. The workpiece surface area marking device of any one of claims 1 to 9, wherein, There are at least two marking pens, and all the marking pens are located on the same side of the profile; or there is one marking pen, and the marking pen is always on the same side of the length-measuring element when the marking pen moves relative to the length-measuring element. The marking pen has an extendable structure.

21. The workpiece surface area marking device of any one of claims 1 to 9, wherein, The extendable structure of the marking pen is one of the following:

22. The workpiece surface processing area marking apparatus of claim 21, wherein, The extendable structure of the marking pen includes a movable pull rod; The extendable structure of the marking pen includes a telescopic pull wire; The extendable structure of the marking pen includes an elastically stretchable and shaped rod. ​

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