阅读说明：本技术 防脱扣型密封性钻杆外螺纹生产用刀具 (Tool for producing thread of thread-off-preventing type sealing drill rod ) 是由 方坤 顾光辉 于 2020-06-08 设计创作，主要内容包括：本发明是防脱扣型密封性钻杆外螺纹生产用刀具,其结构包括整体呈正三角形、顶面和底面都平行于水平面的刀片本体,刀片本体中心设刀片定位孔,刀片本体三个角上为以刀片定位孔为中心对称的三个刀刃部,刀刃部从刀片本体的底面到顶面依次设有相互连接的螺纹防脱扣面、锥度密封面、光滑修整面和导向面,螺纹防脱扣面呈“倒V”形,导向面和光滑修整面组成的整体呈“V”形。本发明的优点：设计合理,在刀具上设计有螺纹防脱扣面,可有效提高密封性钻杆外螺纹的防脱性能,增加了导向面,可更容易快速连接,提高与内螺纹连接稳定性,增加了固定安装面,防止使用过程中发生错误,提高密封性钻杆整体稳定性,改善使用效果。(The invention relates to a tool for producing an anti-tripping type sealing drill rod external thread, which structurally comprises a blade body, wherein the blade body is in a regular triangle shape as a whole, the top surface and the bottom surface of the blade body are parallel to a horizontal plane, a blade positioning hole is arranged at the center of the blade body, three blade parts which are symmetrical by taking the blade positioning hole as the center are arranged on three corners of the blade body, a thread anti-tripping surface, a taper sealing surface, a smooth finishing surface and a guide surface which are connected with each other are sequentially arranged on the blade parts from the bottom surface to the top surface of the blade body, the thread anti-tripping surface is in an inverted V shape, and the guide surface and the. The invention has the advantages that: reasonable in design has screw thread anticreep face in the design on the cutter, can effectively improve the anticreep performance of leakproofness drilling rod external screw thread, has increased the spigot surface, can be more easy high-speed joint, improves and interior threaded connection stability, has increased fixed mounting face, prevents to take place the mistake in the use, improves leakproofness drilling rod overall stability, improves the result of use.)

1. Cutter is used in production of anticreep type leakproofness drilling rod external screw thread, its characteristic is regular triangle including whole, top surface and bottom surface all are on a parallel with the blade body (1) of horizontal plane, blade locating hole (11) are established at blade body (1) center, be three cutting edge portion (2) for using blade locating hole (11) as centrosymmetric on three angles of blade body (1), cutting edge portion (2) are equipped with interconnect's screw thread anticreep face (21) from the bottom surface of blade body (1) to the top surface in proper order, tapering sealing surface (22), smooth finishing surface (23) and spigot surface (231), screw thread anticreep face (21) are "V" shape, the whole that spigot surface (231) and smooth finishing surface (23) are constituteed is "V" shape.

2. The tool for producing the external thread of the thread anti-tripping type sealing drill rod as claimed in claim 1, wherein the diameter of the inscribed circle of the regular triangle of the blade body (1) is 12.7mm, the height of the inscribed circle of the regular triangle of the blade body (1) is 6.35 ± 0.02mm, the supplementary angle of the included angle between the connecting part of the thread anti-tripping surface (21) and the bottom surface of the blade body (1), namely the included angle A (31), the width A (32) of the connecting part of the thread anti-tripping surface (21) and the tapered sealing surface (22) is 1.0 ± 0.05mm, the height difference (33) of the two end points of the thread anti-tripping surface is 1.0 ± 0.05mm, the included angle B (34) between the connecting part of the thread anti-tripping surface (21) and the tapered sealing surface (22) is 101.5 ± 0.05mm, the included angle C (35) between the tapered sealing surface (22) and the horizontal plane is 88.5 ± 0.05 °, the overall width (36) is 4.0, the E included angle (371) between the smooth finishing surface (23) and the vertical plane is 45 degrees, and the distance (38) between the middle break point of the smooth finishing surface and the taper sealing surface in the horizontal direction is 0.8 +/-0.05 mm.

3. The tool for producing the external thread of the thread-off preventing type sealing drill rod as claimed in claim 2, wherein the center of the thread-off preventing surface (21), the joint of the thread-off preventing surface (21) and the tapered sealing surface (22) are rounded corners of R0.15 +/-0.05 mm, and the joint of the smooth finishing surface (23) and the tapered sealing surface (22) is rounded corners of R0.80-1.0 mm.

4. The tool for producing the external thread of the thread-off preventing type sealing drill rod as claimed in claim 3, wherein the width of the cutting edge part (2) is 2.5mm, the chip removal groove angle (4) between the cutting edge part (2) and the blade body (1) is 30 °, the negative edge chamfer (5) of the cutting edge part (2) is 0.20 ± 0.06mm, the thread rake angle (6) is 5 to 6 °, the thread relief angle (7) is 5 to 6 °, and the horizontal distance (39) between the outermost end point of the cutting edge part and the center of the tangent circle of the positive triangle of the blade body is 10.54 to 10.56 mm.

5. The tool for producing the external thread of the anti-tripping sealing drill rod as claimed in any one of claims 1 to 4, wherein the top of the blade positioning hole (11) is further provided with a blade fixing and mounting surface (111) in an inverted truncated cone shape.

Technical Field

The invention relates to a tool for producing an external thread of an anti-tripping type sealing drill rod.

Background

The sealing drill rod is used as an important drilling tool component and is used for geological exploration, and the method mainly comprises the steps of surveying and detecting geology, determining a proper bearing stratum, determining a foundation type according to the foundation bearing capacity of the bearing stratum, and calculating foundation parameters. The method can find the mineral deposit with industrial significance in mineral product general survey, provides mineral reserve and geological data required by mine construction design for finding out the quality and quantity of the mineral product and the technical conditions of mining and utilization, and carries out investigation and research work on geological conditions such as rocks, strata, structures, mineral products, hydrology, landforms and the like in a certain area.

The external screw thread of leakproofness drilling rod is its important structure, adopts the cooperation of numerical control lathe to correspond the cutter and realizes its production and processing, and the cutter is used in the production of the leakproofness drilling rod external screw thread among the prior art because its design is unreasonable, leads to the leakproofness drilling rod external screw thread of its production to exist when using easy emergence and internal thread connection unstability and the condition that takes place to drop, influences the result of use.

Disclosure of Invention

The invention provides a tool for producing an anti-tripping type sealing drill rod external thread, aiming at overcoming the defects in the prior art and improving the anti-tripping performance of the produced sealing drill rod external thread on the premise of ensuring the sealing performance.

The technical solution of the invention is as follows: the cutter is used in production of thread-off preventing type leakproofness drilling rod, its structure includes that whole is regular triangle, top surface and bottom surface all are on a parallel with the blade body of horizontal plane, the blade locating hole is established at blade body center, be three cutting edge portion for using the blade locating hole as centrosymmetric on three angles of blade body, cutting edge portion is equipped with interconnect's screw thread-off preventing surface from the bottom surface to the top surface of blade body in proper order, the tapering is sealed the face, smooth finishing surface and guide surface, screw thread-off preventing and releasing personally submits "V" shape, the whole that guide surface and smooth finishing surface are constituteed is "V" shape.

Preferably, the diameter of an inscribed circle of the regular triangle of the blade body is 12.7mm, the height of the inscribed circle is 6.35 +/-0.02 mm, the supplementary angle of an included angle between a connecting part of the thread anti-tripping surface and the bottom surface of the blade body, namely an included angle A, is 60 degrees, the width of the A of the connecting part of the thread anti-tripping surface and the taper sealing surface is 1.0 +/-0.05 mm, the height difference of two end points of the thread anti-tripping surface is 1.0 +/-0.05 mm, the included angle B between the connecting part of the thread anti-tripping surface and the taper sealing surface is 101.5 +/-0.05 degrees, the included angle C between the taper sealing surface and the horizontal plane is 88.5 +/-0.05 degrees, the overall width of the taper sealing surface is 4.0 +/-0.05 mm, the included angle D between the guide surface and the vertical plane is 25 degrees, the included angle E between the smooth trimming surface and the vertical plane is 45 degrees.

Preferably, the center of the thread anti-tripping surface, the joint of the thread anti-tripping surface and the taper sealing surface are R0.15 +/-0.05 mm round corners, and the joint of the smooth finishing surface and the taper sealing surface is R0.80-1.0 mm round corners.

Preferably, the width of the blade part is 2.5mm, the chip removal groove angle between the blade part and the blade body is 30 degrees, the negative chamfering edge of the blade part is 0.20 +/-0.06 mm, the thread front angle is 5-6 degrees, the thread rear angle is 5-6 degrees, and the horizontal distance between the outermost end point of the blade part and the center of the regular triangle inscribed circle of the blade body is 10.54-10.56 mm.

Preferably, the top of the blade positioning hole is also provided with an inverted frustum-shaped blade fixing and mounting surface.

The invention has the advantages that: reasonable in design has screw thread anticreep face in the design on the cutter, can effectively improve the anticreep performance of leakproofness drilling rod external screw thread, has increased the spigot surface, can be more easy high-speed joint, improves and interior threaded connection stability, has increased fixed mounting face, prevents to take place the mistake in the use, improves leakproofness drilling rod overall stability, improves the result of use.

Drawings

FIG. 1 is a schematic structural diagram of a tool for producing internal threads of an anti-tripping type sealing drill rod.

Fig. 2 is an enlarged view of the blade portion in fig. 1.

Fig. 3 is a top view of fig. 1.

In the figure, 1 is a blade body, 11 is a blade positioning hole, 111 is a blade fixing and mounting surface, 2 is a blade part, 21 is a thread anti-tripping surface, 22 is a taper sealing surface, 23 is a smooth finishing surface, 231 is a guide surface, 31 is an included angle A, 32 is the width of a connecting part of the thread anti-tripping surface and the taper sealing surface, 33 is the height difference of two end points of the thread anti-tripping surface, 34 is an included angle B, 35 is an included angle C, 36 is the whole width of the taper sealing surface, 37 is an included angle D, 371 is an included angle E, 38 is the distance between a middle folded point of the smooth finishing surface and the taper sealing surface in the horizontal direction, 39 is the horizontal distance between the outermost end point of the blade part and the center of an inscribed circle of a positive triangle of the blade body, 4 is a chip discharging groove angle, 5 is a negative chamfered edge of a.

Detailed Description

The present invention will be described in further detail with reference to examples and specific embodiments.

As shown in fig. 1-2, the tool for producing the external thread of the thread-off preventing type sealing drill rod comprises a blade body 1 which is in a regular triangle shape as a whole, the top surface and the bottom surface of which are parallel to the horizontal plane, a blade positioning hole 11 is arranged at the center of the blade body 1, three blade parts 2 which are symmetrical by taking the blade positioning hole 11 as the center are arranged on three corners of the blade body 1, the blade parts 2 are sequentially provided with a thread-off preventing surface 21, a taper sealing surface 22, a smooth finishing surface 23 and a guide surface 231 which are connected with each other from the bottom surface to the top surface of the blade body 1, the thread-off preventing surface 21 is in an inverted V shape, and the guide surface 231 and the smooth finishing surface 23 form a V shape as.

The diameter of the inscribed circle of the regular triangle of the blade body 1 is 12.7mm, the height is 6.35 +/-0.02 mm, the supplementary angle of the included angle between the connecting part of the thread anti-tripping surface 21 and the bottom surface of the blade body 1, namely the included angle A31 is 60 degrees, the width A32 of the connecting part of the thread anti-tripping surface 21 and the taper sealing surface 22 is 1.0 +/-0.05 mm, the height difference 33 of two end points of the thread anti-tripping surface is 1.0 +/-0.05 mm, the included angle B34 of the connecting part of the thread anti-tripping surface 21 and the taper sealing surface 22 is 101.5 +/-0.05 degrees (thread anti-tripping included angle), the included angle C35 of the taper sealing surface 22 and the horizontal plane is 88.5 +/-0.05 degrees (blade edge included angle), the whole width 36 of the taper sealing surface is 4.0 +/-0.05 mm (width of a thread cutter), the included angle D37 of the guide surface 231 and the vertical plane is 25 degrees, the included angle E of the smooth trimming surface 23 and the vertical plane is 371 degrees, and the distance 38 between the middle folding point of.

The center of the thread anti-tripping surface 21 and the joint of the thread anti-tripping surface 21 and the taper sealing surface 22 are R0.15 +/-0.05 mm round corners (the sealing round corner of a tool nose), and the joint of the smooth trimming surface 23 and the taper sealing surface 22 is R0.80-1.0 mm round corners (the arc of the smooth trimming surface).

As shown in fig. 3, the width 40 of the cutting edge portion 2 is 2.5mm (thread edge length), the chip groove angle 4 between the cutting edge portion 2 and the blade body 1 is 30 °, the negative edge chamfer 5 of the cutting edge portion 2 is 0.20 ± 0.06mm, the thread rake angle 6 is 5-6 °, the thread relief angle 7 is 5-6 °, and the horizontal distance 39 between the outermost end point of the cutting edge portion (the connection point of the thread anti-tripping surface 21 and the taper sealing surface 22) and the center of the tangent circle of the regular triangle of the blade body is 10.54-10.56 mm.

The top of the blade positioning hole 11 is also provided with an inverted frustum-shaped blade fixing and mounting surface 111.

All the above components are prior art, and those skilled in the art can use any model and existing design that can implement their corresponding functions.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.