A tooling for drilling and positioning of the alloy steel frog point rail

Abstract

The present invention relates to the technology of track production and processing, and particularly to a tooling for drilling and positioning of the alloy steel frog heart rail. A reference positioning component, two positioning and fastening components and a plurality of center punch sleeves are provided on a strip-shaped tooling body; the reference positioning component is fixed on the lower side of the tooling body; the punch sleeves are arranged on the same straight line along the length direction of the tooling body and are located on the lower side of the tooling body, and the central through holes thereof are communicated with the circular holes on the tooling body for inserting center punches. This product can use center punches for marking and positioning, greatly reducing the working time for drilling and positioning of the alloy steel frog heart rail. When in use, directly select the corresponding tooling according to the size of the heart rail, reducing the errors caused by human factors during hole distance positioning compared with manual scribing. It is simple to manufacture, with almost no wear during use, and has high use efficiency and low overall cost compared with traditional scribing tools.

Description

Technical Field

[0001] The invention relates to rail production and processing technology, in particular to a tool used for drilling and positioning of alloy steel frog rails. Background Art

[0002] In the design and development process of frogs, the types of frogs have gradually increased from single ones, from the previous large-scale use of high-manganese steel cast frogs to the current alloy steel heart rail combination frogs. In the production and manufacturing of alloy steel heart rail combination frogs, the production and manufacturing of alloy steel heart rails is a very important link. The alloy steel heart rail is made of special alloy steel materials through heat treatment and forging, so the overall shape is fixed when it is blank. The overall line of the heart rail is determined by the corresponding frog number, and the central symmetrical shape characteristics make the alloy steel heart rail much more difficult to drill and locate than other rail parts.

[0003] In the current frog production process, the method used to drill holes in alloy steel heart rails is still mainly manual marking. Workers use marking tools such as tape measures, long steel rulers, and styluses to mark holes on the heart rails according to the design drawings, and then use a drilling machine to drill holes. Because the heart rails are uneven, there are many more steps to place the heart rails on the marking platform than other rail parts, and it is necessary to manufacture tooling in advance and adjust the marking plane. In addition, the manual marking method will also cause errors, and this error will increase when the number of the heart rails decreases or the length becomes longer. Since the hole spacing and hole position tolerances on the heart rails are in mm, in actual production, manual marking will be repeated to avoid errors, which increases manpower consumption. If the drawings are not checked accurately or the marking is wrong and drilling is performed, the heart rail will be scrapped. In the process of drilling holes in the heart rail, the above production method not only increases the difficulty of work for workers, but also increases the probability of loss of raw materials for products, which in disguise increases the production cost of the enterprise.

[0004] Therefore, in order to meet the requirements of accurate and fast positioning of alloy steel center rail drilling, it is urgent to provide a new positioning tool. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art and provide a tool for drilling and positioning holes in alloy steel frog rails.

[0006] To solve the technical problem, the solution of the present invention is:

[0007] Provide a tooling for drilling and positioning of the alloy steel frog web, including a long strip-shaped tooling body, on which there is a reference positioning component, two positioning and fastening components, and several center punch sleeves; the reference positioning component is fixed on the lower side of the tooling body; among the two side edges of the reference positioning component perpendicular to the length direction of the tooling body, one side edge has a curved surface shape with a smooth transition; the positioning and fastening component includes two vertical side edges fixed on the tooling body, and the distance between the two vertical side edges is greater than the width of the tooling body; at least one of the vertical side edges is equipped with a nut, and a positioning and fastening bolt perpendicular to the tooling body is installed in the nut; the several center punch sleeves are arranged on the same straight line along the length direction of the tooling body; the center punch sleeves are fixed on the lower side of the tooling body, and its central through hole communicates with the round hole on the tooling body for inserting the center punch.

[0008] As an improved scheme, the center punch sleeve has a suitable length. When the tooling is placed on the frog web in the drilling state, the ends of each center punch sleeve are in contact with the surface of the frog web and keep the tooling body parallel to the central axis of the frog web.

[0009] As an improved scheme, the overall structure of the positioning and fastening component is in a shape of a door, and its horizontal middle part is fixed on the surface of the tooling body, and the two vertical side edges are respectively located on both sides of the tooling body.

[0010] As an improved scheme, several round holes are provided on the tooling body, and the center punch sleeves are nested and installed in the round holes and fixed by welding.

[0011] As an improved scheme, the reference positioning component is located between the two positioning and fastening components, and the center punch sleeves are arranged on both sides of the reference positioning component.

[0012] As an improved scheme, the center punch sleeves on one side of the reference positioning component have the same length and the end surfaces are parallel to the tooling body; the center punch sleeves on the other side of the reference positioning component have gradually changing lengths and the ends have the same-direction inclination angles.

[0013] As an improved scheme, the tooling further includes center punches with the same number as the center punch sleeves. The ends of the center punches are in a sharp cone shape, and the diameter is slightly smaller than the inner diameter of the center punch sleeve.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. The tooling in the present invention can be directly placed on the frog web to be drilled. Just press the curved side edge of the reference positioning component against the arc transition position of the frog web, and tighten the positioning and fastening bolts in the positioning and fastening component; after confirming that the tooling will not shake, the center punch can be used for marking and positioning, greatly reducing the working time for drilling and positioning of the alloy steel frog web.

[0016] 2. The present invention can be processed according to different sizes of the standard switch rail. During use, the corresponding tooling can be directly selected according to the size of the switch rail, reducing the error caused by human factors during hole pitch positioning compared with manual scribing.

[0017] 3. The present invention is simple to manufacture and has almost no wear during use. Compared with traditional scribing tools, it has high use efficiency and low overall cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the drilling positioning tooling of the present invention;

[0019] Figure 2 is Figure 1 a top view of the drilling positioning tooling in

[0020] Figure 3 a schematic diagram of the switch rail;

[0021] Figure 4 is a schematic diagram of the actual use mode of the present invention;

[0022] Figure 5 is an enlarged schematic diagram of the punch sleeve (front view on the left, top view on the right);

[0023] Figure 6 is a schematic structural diagram of the reference positioning component (front view at the upper left, left view at the upper right, top view at the lower left);

[0024] Figure 7 is a schematic structural diagram of the positioning and fastening component (front view at the upper left, left view at the upper right, top view at the lower left).

[0025] Reference numerals in the drawings: 1 tooling main body; 2 punch sleeve; 3 positioning and fastening component; 4 reference positioning component; 5 punch; 6 switch rail. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] In this application, the serial numbers assigned to the components themselves, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. And the "connection" and "coupling" mentioned in this application, unless otherwise specified, both include direct and indirect connection (coupling). In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to this application.

[0027] In this application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature has a lower horizontal height than the second feature.

[0028] The following will describe in detail the specific embodiments of the present invention with reference to the accompanying drawings.

[0029] As shown in the figure, the tooling for drilling and positioning the alloy steel frog heart rail in the present invention includes a long strip-shaped tooling body 1, on which a reference positioning component 4, two positioning and fastening components 3, a plurality of punch sleeves 2 and matching punches 5 are provided. The punch sleeve 2 is in a hollow circular tubular shape and has a stepped diameter for nested installation on the outside (see Figure 5 ). The number of punches 5 is the same as that of the punch sleeves 2. The end of the punch 5 is in a tapered shape and the diameter is slightly smaller than the inner diameter of the punch sleeve 2.

[0030] As Figure 6 shown, the overall shape of the reference positioning component 4 is a block. Among the two side edges perpendicular to the length direction of the tooling body, at least one side edge has a smoothly transitioning curved surface shape, and the other side edge can be selected as a vertical plane or a curved surface shape. The reference positioning component 4 is fixed to the lower side of the tooling body 1 by welding, screwing or riveting. The curved surface shape of its side edge is adapted to the arc-shaped transition curved surface in the middle of the heart rail 6. When in use, it can be directly attached to the middle of the heart rail 6 to achieve good reference positioning. Selecting the other side edge as a vertical plane can facilitate the user to identify the placement orientation of the tooling and reduce the operation steps.

[0031] As Figure 7 shown, the overall shape of the positioning and fastening component 3 is a portal structure. The middle part in the horizontal direction is fixed to the surface of the tooling body 1 by welding, screwing or riveting. The two vertical side edges are respectively located on both sides of the tooling body 1, and the distance between the two vertical side edges is greater than the width of the tooling body. Nuts are installed on one of the vertical side edges or on both vertical side edges, and positioning and fastening bolts perpendicular to the tooling body 1 are installed in the nuts. As an alternative replacement example, the positioning and fastening component 3 can be simplified to only have two vertical side edges and be fixed to the tooling body by welding, screwing or riveting.

[0032] The reference positioning component 4 is located between two positioning and fastening components 3, and several center punch sleeves 2 are provided on both sides of the reference positioning component 4. Each center punch sleeve 2 is arranged on the same straight line along the length direction of the tooling body 1. The center punch sleeves 2 are fixed to the lower side of the tooling body, and their central through holes are used for inserting center punches. As an example of the installation method of the center punch sleeve: several circular holes are provided on the tooling body, and the center punch sleeve 2 is nested and installed in the circular holes and fixed by welding. Alternatively, the center punch sleeve 2 is directly welded below the circular hole, and the central through hole of the center punch sleeve 2 has the same aperture as the circular hole.

[0033] Each center punch sleeve 2 has an appropriate length. When the tooling is placed on the switch rail 6 in the drilling state, the ends of each center punch sleeve 2 are in contact with the surface of the switch rail 6. Among them, each center punch sleeve 2 located on one side of the reference positioning component 4 has the same length and the end surface is parallel to the tooling body 1. The lengths of each center punch sleeve 2 located on the other side of the reference positioning component gradually change in sequence and the ends have an inclination angle in the same direction. By this method, the shape of the surface of the switch rail 6 is adapted, so that the tooling body remains parallel to the central axis of the switch rail 6.

[0034] Example of the product manufacturing method:

[0035] (1) Use a long strip of cold-rolled steel as the tooling body 1, and use a laser cutting machine to drill circular holes on the tooling body 1 according to the size of the switch rail 6 and the drilling position. Select a round tube with an outer diameter size matching the aperture and cut it into center punch sleeves 2 of appropriate length, and inlay them into the circular holes, and then weld and fix them. Finally, perform final cutting and grinding on the center punch sleeves 2 according to the shape of the surface of the switch rail 6, so that when the tooling body 1 is placed on the surface of the switch rail 6, it can be parallel to the central axis of the switch rail 6.

[0036] (2) The relative fixation of the tooling body 1 and the switch rail 6 is realized by the positioning and fastening components 3. Cut and process two iron blocks into vertical side walls according to the set dimensions, drill a hole with a diameter of 8 mm on one of the vertical side walls, and weld a nut with an inner diameter of 8 mm on the inner side of the hole. Weld the two vertical side walls correspondingly on both sides of the tooling body 1, and rotate and install the positioning fastening bolts into the nuts from the outside.

[0037] (3) During the drilling process of the switch rail 6, the positioning reference for drilling is also very important. Process a reference positioning component 4 from an iron block according to the set dimensions, connect it with the reference positioning holes cut by laser on the tooling body 1, and then weld and fix it, so that the entire tooling can determine the position of the entire tooling relative to the switch rail 6 through the reference positioning component 4.

[0038] Example of the product usage method:

[0039] 1. Because the hole positions on the alloy steel center rails of different drawings are different, the center rails 6 with different hole positions must be made with corresponding tooling in advance. Therefore, before drilling, you need to check whether the selected tooling is accurate (whether it matches the center rail 6 that needs to be drilled), and ensure that all parts of the tooling are complete and not loose.

[0040] 2. Place the center rail 6 in a horizontal position, and try to ensure that the center line of the center rail 6 is parallel to the horizontal plane, and ensure that the center rail 6 does not shake. Then place the tooling directly on the center rail 6, and place the reference positioning component 4 against the arc-shaped transition surface in the middle of the center rail 6 to ensure that it fits stably.

[0041] 3. Make sure that the center line of the tooling is parallel to the center line of the center rail 6, make one vertical side close to the side of the center rail 6, and rotate the positioning and fastening bolt on the other vertical side so that the positioning and fastening component 3 clamps the two sides of the center rail 6 to ensure that the tooling is tightly combined with the center rail 6 and will not shake back and forth or left and right.

[0042] 4. Finally, check that the relative position of the tooling and the center rail 6 is fixed. From the middle to both sides, put the sample punches corresponding to the tooling into the sample punch sleeve 2 and knock the sample punches 5 to leave punching marks on the surface of the center rail 6. During this period, observe and ensure that the tooling and the center rail 6 do not move relative to each other, and try to ensure that the tip of the sample punch is perpendicular to the center line of the center rail 6. After the proofing is completed, after the tooling is evacuated, to ensure the accuracy of the work, check the drawings and the size of the center rail 6 to ensure that they are correct.

Claims

1. A tooling for drilling and positioning of the alloy steel frog web, characterized in that, it includes a long strip-shaped tooling body, on which there is a reference positioning component, two positioning and fastening components and several center punch sleeves; The reference positioning component is fixed on the lower side of the tooling body; among the two side edges perpendicular to the length direction of the tooling body of the reference positioning component, one side edge has a curved surface shape with a smooth transition; The positioning and fastening component includes two vertical side edges fixed on the tooling body, and the distance between the two vertical side edges is greater than the width of the tooling body; at least one of the vertical side edges is equipped with a nut, and a positioning and fastening bolt perpendicular to the tooling body is installed in the nut; the two side surfaces of the frog web are clamped by the positioning and fastening component to ensure a tight fit, and the tooling is parallel to the central axis of the frog web; The several center punch sleeves are arranged on the same straight line along the length direction of the tooling body; the center punch sleeves are fixed on the lower side of the tooling body, and the central through holes thereof are communicated with the round holes on the tooling body for inserting center punches; The center punch sleeves on one side of the reference positioning component have the same length and the end surfaces are parallel to the tooling body; the lengths of the center punch sleeves on the other side of the reference positioning component gradually change in sequence and the ends have the same-direction inclination angles; in this way, it adapts to the shape of the frog web surface; when the tooling is placed on the frog web in the drilling state, the ends of all the center punch sleeves are in contact with the frog web surface and the tooling body is kept parallel to the central axis of the frog web.

2. The tooling for drilling and positioning of the alloy steel frog web according to claim 1, characterized in that, the overall structure of the positioning and fastening component is in a shape of a door, and the middle part in the horizontal direction is fixed on the surface of the tooling body, and the two vertical side edges are respectively located on both sides of the tooling body.

3. The tooling for drilling and positioning of the alloy steel frog web according to claim 1, characterized in that, several round holes are provided on the tooling body, and the center punch sleeves are nested and installed in the round holes and fixed by welding.

4. The tooling for drilling and positioning of the alloy steel frog web according to claim 1, characterized in that, the reference positioning component is located between the two positioning and fastening components, and the center punch sleeves are arranged on both sides of the reference positioning component.

5. The tooling for drilling and positioning of the alloy steel frog web according to any one of claims 1 to 4, characterized in that, the tooling further includes center punches with the same quantity as the center punch sleeves, the ends of the center punches are in a sharp cone shape, and the diameter is slightly smaller than the inner diameter of the center punch sleeves.

Images