Square pull rod hole center marking tool
By designing a center marking tool for square tie rod holes using right angle steel structure, using the center line positioning of the square tie rod, the problems of low marking efficiency and low accuracy in the existing technology are solved, and efficient and accurate hole positioning is achieved Line, improving the quality of finished products.
Patent Information
- Application Number
- CN202421029786.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2025-02-21
- Estimated Expiration
- 2034-05-13
AI Technical Summary
The prior art has a large workload, low efficiency when marking the center of the square pull rod hole, and is prone to cumulative errors, which affects the quality of the finished product.
A square tie rod hole center marking tooling is designed, using right angle steel structure, and quickly positioning is achieved through the square shape and length center line in the middle of the square tie rod, and the hole positioning edge is used to mark the hole positioning.
It greatly reduces the workload of the marking process, improves work efficiency, ensures the accuracy and consistency of the hole position, avoids cumulative errors, and improves the quality of the finished product of the square pull rod.
Smart Images
Figure CN222511791U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of marking tooling, in particular to a marking tooling for the center of a square tie rod hole. Background Art
[0002] The square tie rod is a common railway turnout accessory with a large demand. The square tie rod is provided with multiple machined holes (see Figure 3 ), and the hole position size accuracy requirement is high. It is necessary to adjust the marking ruler for marking multiple times to determine the hole center position, which is labor-intensive, inefficient, and not accurate. In addition, multiple adjustments of the marking ruler will also result in cumulative errors or even mistakes, causing the square tie rod hole position to shift, affecting the quality of the finished square tie rod. Utility Model Content
[0003] The utility model provides a center marking tool for a square tie rod hole, so as to overcome the shortcomings of the prior art.
[0004] The technical solution adopted by the utility model is: a center marking tool for a square pull rod hole, the tool having a first positioning surface and a second positioning surface which are perpendicular to each other, the first positioning surface having an alignment notch and a plurality of marking notches, the alignment notch being located in the middle of the first positioning surface, and the marking notches being distributed on both sides of the alignment notch; the alignment notch having a vertical reference edge perpendicular to the second positioning surface, the marking notch having a horizontal positioning edge parallel to the second positioning surface and a vertical positioning edge perpendicular to the second positioning surface; the spacing between the vertical reference edge and the vertical positioning edge is equal to the spacing between the center of the hole and the midline of the length direction of the square pull rod, and the height of the horizontal positioning edge relative to the second positioning surface is equal to the height of the center of the hole.
[0005] The tooling is a right-angle steel structure, and the two vertical surfaces inside the right-angle steel structure are finely processed to form the first positioning surface and the second positioning surface.
[0006] The vertical positioning edge extends to below the horizontal positioning edge, and a accommodating groove for a scribing needle is provided between the vertical positioning edge and the horizontal positioning edge.
[0007] An avoidance groove is provided at the inner side of the corner between the first positioning surface and the second positioning surface along the length direction.
[0008] Compared with the prior art, the utility model has the following beneficial effects:
[0009] 1. The utility model adopts a right-angle structure and uses the square shape in the middle of the square pull rod and the center line in the length direction to achieve rapid positioning. The hole marking is achieved through the marking notch positioning edge, which greatly reduces the workload of the original marking process and has high work efficiency.
[0010] 2. The utility model is easy to manufacture and low in cost; it is easy to operate, has accurate marking, high hole position size accuracy, and good consistency, avoiding the problem of cumulative errors or even mistakes caused by multiple adjustments of the marking ruler in the prior art, and ensuring the quality of the finished product of the square pull rod.
[0011] 3. The utility model is suitable for marking the hole positions of all square tie rod workpieces and has strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;
[0013] Figure 2 yes Figure 1 A partial enlarged schematic diagram in the middle;
[0014] Figure 3 It is a schematic diagram of the square tie rod structure;
[0015] Figure 4 It is a schematic diagram of the use state of the utility model. DETAILED DESCRIPTION
[0016] The following is combined with Figure 1-4 The utility model is described in detail with specific implementation modes.
[0017] A tool for marking the center of a square tie rod hole, the tool having a first positioning surface 1 and a second positioning surface 2 which are perpendicular to each other, the first positioning surface 1 having an alignment notch 3 and a plurality of marking notches 4, the alignment notch 3 being located in the middle of the first positioning surface 1, and the marking notches 4 being distributed on both sides of the alignment notch 3; the alignment notch 3 having a vertical reference edge 3-1 perpendicular to the second positioning surface 2, the marking notch 4 having a horizontal positioning edge 4-1 parallel to the second positioning surface 2 and a vertical positioning edge 4-2 perpendicular to the second positioning surface 2; the spacing between the vertical reference edge 3-1 and the vertical positioning edge 4-2 is equal to the spacing between the center of the hole and the midline 7 in the length direction of the square tie rod, and the height of the horizontal positioning edge 4-1 relative to the second positioning surface 2 is equal to the height of the center of the hole.
[0018] Preferably, the tooling is a right-angle steel structure, and the two vertical surfaces inside the right-angle steel structure are finely processed to form the first positioning surface 1 and the second positioning surface 2.
[0019] Furthermore, the vertical positioning edge 4-2 extends below the horizontal positioning edge 4-1, and a stylus receiving groove 5 is provided between the vertical positioning edge 4-2 and the horizontal positioning edge 4-1, so as to ensure that the stylus can move along the vertical positioning edge 4-2 to below the horizontal positioning edge 4-1.
[0020] Furthermore, the first positioning surface 1 and the second positioning surface 2 have an avoidance groove 6 along the length direction at the inner side of the corner to prevent the right angles of the square rod from interfering with each other at the corner, ensuring that the first positioning surface 1 and the second positioning surface 2 are completely in close contact with the bottom and side surfaces of the square rod and accurately positioned.
[0021] In one embodiment, four machined holes 11 are symmetrically provided on the square tie rod 10, and four marking notches 4 are provided on the first positioning surface 1 of the tooling, and the four marking notches 4 are symmetrically distributed on both sides of the alignment notch 3. It should be noted that the number of marking notches 4 is determined according to the number of holes on the square tie rod 10. Of course, the utility model can also be used for marking the center of the hole of the same square part.
[0022] When drawing a line, see Figure 4 First, place the square rod 10 to be marked on the marking platform, and mark the length direction center line 7 on the top surface of the square rod 10, then place the tool on the square rod 10, and make the first positioning surface 1 close to the top surface of the square rod 10, the second positioning surface 2 close to the side of the square rod 10, and make the center line 7 at the alignment gap 3; adjust the position of the tooling to align the center line 7 with the vertical reference edge 3-1, press the tooling, use the marking needle to mark the first positioning line 8 in the center of the hole along the vertical positioning edge 4-2, then slide the tooling to the right along the square rod 10 to make the horizontal positioning edge 4-1 pass over the first positioning line 8, then use the marking needle to mark the second positioning line 9 along the horizontal positioning edge 4-1, the cross intersection of the first positioning line 8 and the second positioning line 9 is the center position of the hole, and the marking is completed.
[0023] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, all equivalent changes made to the contents described in the claims of the present invention should be included in the scope of the claims of the present invention.
Claims
1. A tool for marking the center of a square tie rod hole, characterized in that: The tooling has a first positioning surface (1) and a second positioning surface (2) which are perpendicular to each other. The first positioning surface (1) has an alignment notch (3) and a plurality of scribing notches (4). The alignment notch (3) is located in the middle of the first positioning surface (1), and the scribing notches (4) are distributed on both sides of the alignment notch (3). The alignment notch (3) has a vertical reference edge (3-1) perpendicular to the second positioning surface (2), and the scribing notch (4) has a horizontal positioning edge (4-1) parallel to the second positioning surface (2) and a vertical positioning edge (4-2) perpendicular to the second positioning surface (2). The spacing between the vertical reference edge (3-1) and the vertical positioning edge (4-2) is equal to the spacing between the center of the hole and the midline (7) of the length direction of the square pull rod, and the height of the horizontal positioning edge (4-1) relative to the second positioning surface (2) is equal to the height of the center of the hole.
2. A square tie rod hole center marking tool according to claim 1, characterized in that: The tooling is a right-angle steel structure, and the two vertical surfaces on the inner side of the right-angle steel structure are finely processed to form the first positioning surface (1) and the second positioning surface (2).
3. A square tie rod hole center marking tool according to claim 1 or 2, characterized in that: The vertical positioning edge (4-2) extends below the horizontal positioning edge (4-1), and a accommodating groove (5) for a marking needle is provided between the vertical positioning edge (4-2) and the horizontal positioning edge (4-1).
4. A square tie rod hole center marking tool according to claim 3, characterized in that: An avoidance groove (6) is provided on the inner side of the corner between the first positioning surface (1) and the second positioning surface (2) along the length direction.