Positioning device for non-magnetic drill pipe machining

Abstract

The utility model relates to a kind of drill pipe processing frock, specifically a kind of positioning device for non-magnetic drill pipe processing, including frock main body fixedly installed on machine tool workstation, and the top center of frock main body is fixedly provided with extension block, and the bottom center of frock main body is fixedly provided with fixed block, and the center of the through hole of being penetrated through frock main body, extension block and fixed block is set, the through hole is used for inserting the end of non-magnetic drill pipe, and the through hole is screw-threaded and is installed with several connecting rings, diameter gradually decreases from bottom to top, it is helpful to provide better guiding and positioning effect when inserting non-magnetic drill pipe.

Description

Technical Field

[0001] This utility model relates to a tooling for drilling pipe processing, and more particularly to a positioning device for processing non-magnetic drill pipes. Background Technology

[0002] Non-magnetic drill rods, as a key non-magnetic tool, are widely used in engineering fields such as mine roadway support drilling, mine rock drilling, coal mine rock roadway and bridge tunnel excavation. Their characteristic of being unaffected by the geomagnetic field ensures the accuracy of the drilling trajectory and the reliability of the measurement data, which is of great significance for improving construction safety and efficiency.

[0003] However, in the machining of non-magnetic drill rods, especially in precision machining processes such as drilling and turning, clamping and positioning have always presented significant challenges. Due to the special material and high surface precision requirements of non-magnetic drill rods, traditional fixtures often struggle to achieve fast, accurate, and stable positioning, easily leading to machining deviations and affecting the final performance of the drill rod. Furthermore, frequent clamping and vibrations and friction during machining not only exacerbate tooling wear but may also affect the lifespan of the equipment and the maintenance of its non-magnetic properties due to metal shavings intruding into the positioning structure. Utility Model Content

[0004] The main objective of this invention is to provide a positioning device for machining non-magnetic drill rods, in order to solve the problems raised in related technologies.

[0005] To achieve the above objectives, according to one aspect of the present invention, a positioning device for machining non-magnetic drill rods is provided, comprising a tooling body fixedly mounted on a machine tool worktable, an extension block fixedly disposed at the top center of the tooling body, the surface of the extension block being flush with the surface of the tooling body, a fixing block fixedly disposed at the bottom center of the tooling body, the fixing block protruding from the bottom surface of the tooling body, a through hole being formed at the center of the tooling body, the extension block and the fixing block, the through hole being used to insert the end of a non-magnetic drill rod, a plurality of connecting rings being threaded into the through hole, and a plurality of positioning holes being formed in a circular array through the tooling body.

[0006] Furthermore, the through hole is shaped like a frustum, the diameter of the through hole gradually increases from top to bottom, and the angle formed by the top of the inclined side of the trapezoidal section and the axis of the through hole is an acute angle. The edges of the through holes in the tooling body, the extension block and the fixing block are all flush, and the three together form a complete frustum-shaped through hole.

[0007] Furthermore, the connecting ring includes a first connecting ring threadedly installed in the through hole of the extension block, a second connecting ring threadedly installed in the through hole of the tooling body, and a third connecting ring threadedly installed in the through hole of the fixing block, and the inner wall of each connecting ring is coated with a wear-resistant coating.

[0008] Furthermore, a first dustproof block is fixedly provided at the lower end of the third connecting ring, and a second dustproof block is fixedly provided at the upper end of the first connecting ring. Both the first dustproof block and the second dustproof block are provided with slots that are cross-shaped.

[0009] Furthermore, the thickness of the extension block is less than the thickness of the fixing block, and the thickness of the fixing block is less than the thickness of the tooling body.

[0010] Furthermore, the outer diameter of the extension block is larger than the outer diameter of the fixed block, and the outer diameter of the tooling body is larger than the outer diameter of the extension block.

[0011] Furthermore, the upper diameter of the positioning hole is smaller than the lower diameter, and a matching screw is installed in the internal thread of the positioning hole to fix the tool body on the machine tool worktable.

[0012] Furthermore, the distance between the center point of the positioning hole and the center point of the tooling body is greater than the radius of the extension block.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. In this positioning device for machining non-magnetic drill rods, the tooling as a whole has a through hole, and a connecting ring is installed in the thread of the through hole. The diameter gradually decreases from the bottom to the top, which helps to provide better guidance and positioning effect when inserting non-magnetic drill rods.

[0014] 2. In this positioning device for machining non-magnetic drill rods, the inner wall of the connecting ring is coated with a wear-resistant coating, which significantly improves the wear resistance of the inner wall of the connecting ring, reduces the performance degradation caused by friction and wear, and extends the service life of the tooling; the tungsten carbide and ceramic composite material itself is not magnetic, and the coating process does not introduce additional magnetic components, ensuring that the entire tooling maintains its original non-magnetic characteristics and improves the machining quality of non-magnetic drill rods. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the positioning device for machining non-magnetic drill rods in a preferred embodiment of this utility model; Figure 2 This is a cross-sectional view of the positioning device for machining non-magnetic drill rods in a preferred embodiment of this utility model.

[0016] Figure label: 1. Fixture body; 2. Extension block; 3. Fixing block; 4. Through hole; 5. Positioning hole; 21. First connecting ring; 11. Second connecting ring; 31. Third connecting ring; 6. First dustproof block; 61. Grooving; 7. Second dustproof block. Detailed Implementation

[0017] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0018] This embodiment provides a positioning device for machining non-magnetic drill rods, including a fixture body 1 fixedly installed on a machine tool worktable. An extension block 2 is fixedly installed at the top center of the fixture body 1. The surface of the extension block 2 is flush with the surface of the fixture body 1 and does not affect the normal installation of the fixture body 1 on the machine tool worktable. A fixing block 3 is fixedly installed at the bottom center of the fixture body 1. The fixing block 3 protrudes from the bottom surface of the fixture body 1. A through hole 4 is opened at the center of the fixture body 1, the extension block 2 and the fixing block 3. The edges of the through hole 4 in the fixture body 1, the extension block 2 and the fixing block 3 are all flush, and the three together form a complete frustum-shaped through hole. The through hole 4 is used to insert the end of the non-magnetic drill rod. Several connecting rings are installed in the thread of the through hole 4. With the center point of the fixture body 1 as the axis, several positioning holes 5 are opened in a ring array through the fixture body 1.

[0019] like Figure 2 As shown, the through hole 4 is frustum-shaped, which means that the diameter of the through hole 4 gradually increases from top to bottom. This shape matches the end shape of the non-magnetic drill rod, which helps to provide better guidance and fixation when inserting the non-magnetic drill rod. The cross-section of the through hole 4 is trapezoidal, and the angle formed by the top of the hypotenuse of the trapezoidal cross-section and the axis of the through hole 4 is an acute angle of 60 degrees.

[0020] like Figure 2 As shown, the connecting ring includes a first connecting ring 21 threadedly installed in the through hole 4 of the extension block 2, a second connecting ring 11 threadedly installed in the through hole 4 of the tooling body 1, and a third connecting ring 31 threadedly installed in the through hole 4 of the fixing block 3. The diameter of the connecting rings gradually decreases from bottom to top, and the hole diameter of the connecting rings also gradually decreases from bottom to top. The openings of each connecting ring maintain a high degree of consistency in the axial direction, that is, their center lines coincide, and the hole diameter changes smoothly, avoiding jamming or deflection when the non-magnetic drill rod passes through the connecting rings. Since the connecting ring adopts a threaded installation design, it can be flexibly replaced according to the specific shape and size of the non-magnetic drill rod. When it is necessary to process non-magnetic drill rods of different specifications, it is only necessary to disassemble the connecting ring and replace it with a suitable model, without modifying the entire tooling body 1.

[0021] like Figure 2As shown, the inner walls of the connecting rings are coated with a wear-resistant coating, which is either tungsten carbide or a ceramic composite material. Tungsten carbide is a material with extremely high hardness and wear resistance, and is widely used in applications requiring high loads and friction. Its excellent physical and chemical properties, such as high melting point, high hardness, and good corrosion resistance, make it a superior choice for coating the inner walls of the connecting rings. Ceramic composite materials combine the high hardness of ceramics with the toughness of metals, exhibiting excellent wear resistance, thermal shock resistance, and chemical stability. This material can maintain stable performance even under extreme working environments, making it suitable for high-precision and high-requirement machining applications.

[0022] like Figure 2 As shown, by applying a wear-resistant coating, the wear resistance of the inner wall of the connecting ring can be significantly improved, reducing performance degradation caused by friction and wear, thereby extending the service life of the tooling and ensuring accuracy and stability during the machining of high-hardness non-magnetic drill rods. Since the selected tungsten carbide or ceramic composite material itself is non-magnetic, and the above coating process does not introduce additional magnetic components, it can be ensured that the entire tooling, including the treated inner wall of the connecting ring, retains its original non-magnetic characteristics, which helps to improve the machining quality of non-magnetic drill rods and meet the application requirements of high precision and high requirements.

[0023] like Figure 2 As shown, metal dust, chips, and other particles generated during processing may enter the through hole 4 and rub against the wear-resistant coating of the connecting ring, causing the coating to wear or fall off, reducing the tooling life. The adhesion of impurities may change the magnetic permeability of the inner wall of the connecting ring, affecting the processing accuracy of the non-magnetic drill rod. The lower end of the third connecting ring 31 is fixedly provided with a first dustproof block 6, and the upper end of the first connecting ring 21 is fixedly provided with a second dustproof block 7. Both the first dustproof block 6 and the second dustproof block 7 are provided with slots 61. The slots 61 are cross-shaped. The part of the dustproof block near the slot 61 is made of silicone. The non-magnetic drill rod extends out of the through hole 4 through the slot 61. The dustproof block is located in the slot 61 and fits tightly against the outer wall of the non-magnetic drill rod, effectively preventing metal dust, chips, and other particles generated during processing from entering the connecting ring, thereby protecting the wear-resistant coating from wear or fall off.

[0024] like Figure 1 and Figure 2 As shown, the thickness of the extension block 2 is less than the thickness of the fixing block 3, and the thickness of the fixing block 3 is less than the thickness of the tooling body 1.

[0025] like Figure 1 and Figure 2 As shown, the outer diameter of the extension block 2 is larger than the outer diameter of the fixed block 3, and the outer diameter of the tooling body 1 is larger than the outer diameter of the extension block 2.

[0026] like Figure 1 and Figure 2 As shown, the diameter of the fixture body 1 is 249mm, which ensures that the fixture has sufficient stability and support area on the machine tool workbench. The thickness is 20mm, which ensures that the fixture body 1 maintains sufficient strength without being too bulky. It takes into account both the load-bearing capacity of the fixture and the convenience of processing and installation. The appropriate thickness helps the fixture body 1 maintain its shape stability when subjected to processing forces, and it is not easy to bend or deform.

[0027] like Figure 1 and Figure 2 As shown, the extension block 2 has a diameter of 110mm, which helps to reduce interference between the extension block 2 and surrounding equipment and improve the overall compactness of the equipment. The thickness is 5mm, which makes the extension block 2 lighter and more flexible while maintaining sufficient strength.

[0028] like Figure 1 and Figure 2 As shown, the diameter of the fixing block 3 is 90mm and the thickness is 15mm. The appropriate thickness helps the fixing block 3 maintain its shape stability when subjected to fixing force, and it is not easy to break or deform. The dimensions of the tooling body 1, the extension block 2 and the fixing block 3 are coordinated with each other, and together they constitute the core part of the positioning device for non-magnetic drill rod processing.

[0029] like Figure 2 As shown, the positioning hole 5 is a cylindrical hole. The upper diameter of the positioning hole 5 is smaller than the lower diameter. The upper diameter of the positioning hole 5 is 11mm and the lower diameter is 17mm. The positioning hole 5 is threaded with a matching screw to fix the tooling body 1 on the machine tool worktable.

[0030] like Figure 1 As shown, the distance between the center point of the positioning hole 5 and the center point of the fixture body 1 is greater than the radius of the extension block 2. The distance between the center point of the positioning hole 5 and the center point of the fixture body 1 is 65mm, and there are 4 positioning holes 5. This ensures that the distribution of the positioning holes 5 on the fixture body 1 is neither too concentrated, causing stress concentration, nor too dispersed, affecting the fixing effect. This provides strong support for the stable installation of the fixture body 1 on the machine tool workbench. The 4 positioning holes 5 can form a stable four-point support structure, effectively resisting various forces and vibrations generated during processing, ensuring that the position of the fixture body 1 on the machine tool workbench remains stable. The machine tool workbench also has several screw holes arranged in a ring array. By installing screws into the positioning holes 5 and screwing them into the screw holes, the fixture body 1 is fixedly installed on the machine tool workbench.

[0031] In practical use, the inner wall of the connecting ring is coated with a wear-resistant coating, and the connecting ring is threaded into the through holes 4 of the extension block 2, the tooling body 1, and the fixing block 3 respectively. The tooling body 1 is placed on the machine tool worktable, ensuring that the center of the tooling body 1 is aligned with the center of the machine tool worktable. The screw is inserted from one end of the positioning hole 5, and a wrench is used to screw the screw into the screw hole on the machine tool worktable. The screws in the four positioning holes 5 are tightened one by one to ensure that the tooling body 1 is firmly installed on the machine tool worktable. One end of the non-magnetic drill rod is aligned with the through hole 4 in the tooling body 1, and the non-magnetic drill rod is slowly inserted into the connecting ring through the slot 61 until the end of the non-magnetic drill rod is fully inserted into the through hole 4, thus completing the positioning and snap-fit ​​installation of the non-magnetic drill rod. During this process, the silicone material of the dustproof block will tightly adhere to the outer wall of the non-magnetic drill rod to prevent metal dust, chips, and other particles from entering the connecting ring. The non-magnetic drill rod is then further processed according to its material and processing requirements.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A positioning device for non-magnetic drill pipe machining, comprising a tool main body (1) fixedly installed on a machine tool worktable, characterized in that, An extension block (2) is fixedly installed at the top center of the tooling body (1). The surface of the extension block (2) is flush with the surface of the tooling body (1). A fixing block (3) is fixedly installed at the bottom center of the tooling body (1). The fixing block (3) protrudes from the bottom surface of the tooling body (1). A through hole (4) is opened at the center of the tooling body (1), the extension block (2) and the fixing block (3). The through hole (4) is used to insert the end of the non-magnetic drill rod. Several connecting rings are installed in the internal thread of the through hole (4). Several positioning holes (5) are opened in a ring array through the tooling body (1).

2. The non-magnetic drill pipe machining positioning device of claim 1, wherein, The through hole (4) is frustum-shaped. The diameter of the through hole (4) gradually increases from top to bottom. The angle formed by the hypotenuse of the trapezoidal section and the axis of the through hole (4) is acute. The edges of the through holes (4) in the tooling body (1), the extension block (2) and the fixing block (3) are all flush. Together, they form a complete frustum-shaped through hole.

3. The non-magnetic drill pipe machining positioning device of claim 1, wherein, The connecting ring includes a first connecting ring (21) threaded in the through hole (4) of the extension block (2), a second connecting ring (11) threaded in the through hole (4) of the tooling body (1), and a third connecting ring (31) threaded in the through hole (4) of the fixing block (3), and the inner wall of the connecting ring is coated with a wear-resistant coating.

4. The positioning device for non-magnetic drill pipe machining according to claim 3, characterized in that, The lower end of the third connecting ring (31) is fixedly provided with a first dustproof block (6), and the upper end of the first connecting ring (21) is fixedly provided with a second dustproof block (7). Both the first dustproof block (6) and the second dustproof block (7) are provided with slots (61) that are through-cut. The slots (61) are cross-shaped.

5. The non-magnetic drill pipe machining positioning device of claim 1, wherein, The thickness of the extension block (2) is less than the thickness of the fixing block (3), and the thickness of the fixing block (3) is less than the thickness of the tooling body (1).

6. The non-magnetic drill pipe machining positioning device of claim 1, wherein, The outer diameter of the extension block (2) is greater than that of the fixed block (3), and the outer diameter of the tooling body (1) is greater than that of the extension block (2).

7. The non-magnetic drill pipe machining positioning device of claim 1, wherein, The upper diameter of the positioning hole (5) is smaller than the lower diameter. The positioning hole (5) is threaded with a screw that is compatible with it, which is used to fix the tool body (1) on the machine tool workbench.

8. The positioning device for machining non-magnetic drill rods according to claim 1, characterized in that, The distance between the center point of the positioning hole (5) and the center point of the tooling body (1) is greater than the radius of the extension block (2).

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