A radial hole angle adjustable thin shaft drilling tool

Abstract

A drilling tool for a thin shaft rod with an adjustable radial hole angle belongs to the field of mechanical processing. The present invention includes a positioning device and an adjustable inclined hole limiting device. A second mounting hole is processed on the adjustable inclined hole limiting device, and the middle part of the thin shaft rod to be processed is installed in the second mounting hole. The left and right ends of the positioning device are respectively processed with a limiting fixing hole and a first mounting hole, and the two ends of the thin shaft rod to be processed are respectively installed in the first mounting holes. The shaft end set screws are tightened and fixed to the thin shaft rod to be processed through the limiting fixing holes, and the adjustable inclined hole limiting device is installed on the positioning device through an axial adjustment screw. The research and development purpose of the present invention is to solve the problem of effectively using ordinary bench drills to process such thin shaft rod radial angle holes and save repeated alignment time. The radial hole angle adjustable thin shaft rod drilling tool of the present invention has a simple structure, convenient adjustment, high positioning accuracy, reliable limiting, strong practicality, and low manufacturing cost. It can be put into use in series according to thin shaft rods of different specifications, and is suitable for popularization.

Description

Technical Field

[0001] The invention relates to a fine-shaft rod drilling tool with adjustable radial hole angle, belonging to the field of mechanical processing. Background Art

[0002] The existing processing technology for processing radial (clamp) angle holes of thin shafts is to fix the thin shafts with V-shaped irons on a CNC milling machine and process them under CNC program control. A torsion spring is installed on the cover shaft of the socket that falls off the equipment so that the cover automatically closes after the plug falls off. The preload force of the closed torsion spring is related to the installation angle of the fixed block that fixes one end of the torsion spring, and the installation angle of the fixed block is determined by the angle between the fixed block and the positioning pin hole of the torsion spring shaft and the fixed holes at both ends. The radial angles of the positioning pin hole and the fixed holes at both ends are different, and the preload force of the torsion spring after installation will be affected. Since the relative angles of the torsion arms at both ends of each batch of torsion springs are different, in order to make the preload force of the torsion spring after installation reach a certain size, it is necessary to adjust the angles of the torsion spring fixing block and the shaft positioning pin hole and the fixed holes at both ends according to the different angles of the torsion spring torsion arms. Therefore, the angular position of the pin hole for positioning the fixing block and the shaft needs to be adjusted by batch. Generally, the positioning holes on the shaft are clamped with V-shaped irons on a CNC milling machine, and the CNC program controls the drilling of each radial hole. The difference between the angle of the radial hole and the axial position requires adjustment of the processing program. Although the processing position accuracy is easy to ensure and the adjustment program is not complicated, it requires the use of CNC machine tools and the zero point needs to be found after each clamping, which reduces production efficiency.

[0003] Therefore, it is urgent to propose a fine-shaft drilling tool with adjustable radial hole angle to solve the above technical problems. Summary of the invention

[0004] The purpose of the present invention is to solve the problem of effectively using ordinary bench drills to process such thin shaft radial angle holes and save repeated alignment time. A brief overview of the present invention is given below to provide a basic understanding of certain aspects of the present invention. It should be understood that this overview is not an exhaustive overview of the present invention. It is not intended to determine the key or important parts of the present invention, nor is it intended to limit the scope of the present invention.

[0005] The technical solution of the present invention:

[0006] A radial hole angle adjustable thin shaft drilling tool, including a positioning device and an adjustable inclined hole limit device, the adjustable inclined hole limit device is processed with a second mounting hole, the middle part of the thin shaft to be processed is installed in the second mounting hole, the left and right ends of the positioning device are respectively processed with a limiting fixing hole and a first mounting hole, the two ends of the thin shaft to be processed are respectively installed in the first mounting holes, the shaft end fixing screw is tightened and fixed to the thin shaft to be processed through the limiting fixing hole, and the adjustable inclined hole limit device is installed on the positioning device through an axial adjustment screw.

[0007] Preferably, the left and right ends of the positioning device are symmetrically processed with end holes.

[0008] Preferably: a drill sleeve is provided in the end hole processing hole.

[0009] Preferably: a slot is processed on the adjustable inclined hole limiting device, and the positioning device is arranged in the slot.

[0010] In order to solve the problem that the thin shaft to be processed can be fixedly installed horizontally and vertically and adjusted according to processing requirements, the technical solution of the present invention is as follows:

[0011] A radial hole angle adjustable thin shaft drilling tool, including a positioning device and an adjustable inclined hole limit device, the adjustable inclined hole limit device is processed with a second mounting hole, the middle part of the thin shaft to be processed is installed in the second mounting hole, the left and right ends of the positioning device are respectively processed with a limiting fixing hole and a first mounting hole, the two ends of the thin shaft to be processed are respectively installed in the first mounting holes, the shaft end fixing screw is tightened and fixed to the thin shaft to be processed through the limiting fixing hole, and the adjustable inclined hole limit device is installed on the positioning device through an axial adjustment screw.

[0012] Preferably: the adjustable inclined hole limit device includes a fixed block and an adjusting block, one end of the adjusting block is processed with a second mounting hole, the middle part of the thin shaft rod to be processed is slidably installed in the second mounting hole, the other end of the fixed block is processed with a screw through hole, and the other end of the adjusting block is processed with an arc-shaped slot hole, the fixed screw sleeve in the adjusting screw sleeve combination is installed in the arc-shaped slot hole of the adjusting block, the fixed block and the adjusting block are connected and installed through the adjusting screw sleeve combination, and the fixed block is installed on the positioning device through the axial adjustment screw.

[0013] Preferably, the adjusting block has an inclined hole.

[0014] Preferably: a drill sleeve is provided in the inclined hole processing hole.

[0015] Preferably: an angle scale is provided on the fixing block, and an arrow is provided on the adjusting block.

[0016] Preferably, a waist-shaped hole is processed on the fixing block, and the axial adjustment screw is arranged in the waist-shaped hole.

[0017] Preferably: it also includes an inclined pad block, and the adjustable inclined hole limiting device is arranged on the inclined pad block.

[0018] The present invention has the following beneficial effects:

[0019] 1. The radial hole angle adjustable thin-shaft rod drilling tool of the present invention can adjust the adjustable inclined hole limit device according to the axial position of the inclined hole to be drilled, making the adjustment more flexible and convenient, and the limit reliable;

[0020] 2. A radial hole angle adjustable thin-shaft rod drilling tool of the present invention has an angle scale engraved on the fixed block and a positioning arrow engraved on the corresponding arc surface of the adjustment block, which is convenient for reading the radial angle value of the inclined hole;

[0021] 3. The radial hole angle adjustable thin shaft drilling tool of the present invention has an arc-shaped slot on the adjustable inclined hole limit device, which is convenient for the adjustment block to rotate along the thin shaft to be processed, thereby realizing the adjustment of the radial hole angle. The combination of the arc-shaped slot and the adjusting screw sleeve makes the angular limit fixation of the adjustment block simple, convenient and reliable;

[0022] 4. The radial hole angle adjustable thin shaft rod drilling tool of the present invention has a unique and practical structure, accurate and reliable limit fixation, and is easy to adjust, replace and drill, and is suitable for popularization and use;

[0023] 5. The radial hole angle adjustable thin-shaft rod drilling tool of the present invention has low manufacturing cost. According to the different specifications of the thin-shaft rods to be processed, similar adjustable limit drilling tooling can be designed and manufactured in series, making the processing process more flexible and reliable. The tooling can be put into use in series according to the thin-shaft rods to be processed with different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional diagram of a fine-shaft drilling tool with an adjustable radial hole angle;

[0025] Figure 2 The schematic diagram of the structure of a fine-shaft drilling tool with adjustable radial hole angle;

[0026] Figure 3 is a stereogram of the regulating block;

[0027] Figure 4 The diagram is a diagram of the use status of a fine-shaft drilling tool with an adjustable radial hole angle;

[0028] Figure 5 It is a three-dimensional diagram of the inclined plane pad;

[0029] Figure 6 It is a three-dimensional picture of the thin shaft to be processed;

[0030] In the figure, 1-positioning device, 2-adjustable inclined hole limiting device, 3-thin shaft rod to be processed, 4-shaft end tightening screw, 5-axial adjustment screw, 6-inclined pad, 11-limiting fixing hole, 12-first mounting hole, 13-end hole processing hole, 14-drill sleeve, 21-fixing block, 22-adjusting block, 23-arc slot hole, 24-adjusting screw sleeve combination, 25-slot, 31-second mounting hole, 211-angle scale, 212-waist hole, 221-inclined hole processing hole, 222-arrow, 213-screw mounting hole, 241-fixing sleeve, 242-screw. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is described below by the specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0032] The connection mentioned in the present invention is divided into fixed connection and detachable connection. The fixed connection is a non-detachable connection including but not limited to conventional fixed connection methods such as folding connection, rivet connection, bonding connection and welding connection. The detachable connection includes but not limited to conventional detachable methods such as threaded connection, snap connection, pin connection and hinge connection. When the specific connection method is not clearly defined, it is assumed that at least one connection method can always be found in the existing connection methods to achieve the function. Those skilled in the art can choose according to their needs. For example: a fixed connection is selected as a welding connection, and a detachable connection is selected as a hinge connection.

[0033] Specific implementation method 1: Combination Figure 1-Figure 4 Describe this embodiment. This embodiment is a radial hole angle adjustable thin shaft rod drilling tool, including a positioning device 1 and an adjustable inclined hole limiting device 2. The adjustable inclined hole limiting device 2 is processed with a second mounting hole 31. The middle part of the thin shaft rod 3 to be processed is installed in the second mounting hole 31. The left and right ends of the positioning device 1 are respectively processed with a limited fixing hole 11 and a first mounting hole 12. The two ends of the thin shaft rod 3 to be processed are respectively installed in the first mounting hole 12. The shaft end tightening screw 4 is tightened and fixed to the thin shaft rod 3 to be processed through the limited fixing hole 11. The adjustable inclined hole limiting device 2 is adjusted by the axial adjustment screw The nail 5 is installed on the positioning device 1, and the positioning device 1 is used to fix the thin shaft rod 3 to be processed. The shaft end locking screw 4 is used to lock the thin shaft rod 3 to be processed to prevent the thin shaft rod 3 to be processed from being displaced or rotated during drilling, which causes processing errors. The adjustable inclined hole limit device 2 can adjust the axial position and radial angle of the radial hole of the thin shaft rod 3 to be processed, and ensure the position and angle of the drilled radial hole. By rotating the adjustment block 22 in the adjustable inclined hole limit device 2 along the thin shaft rod 3 to be processed to adjust the radial angle of the inclined hole, a multi-hole drilling method for the thin shaft rod 3 to be processed with an adjustable radial hole angle is realized.

[0034] Specific implementation method 2: Combination Figure 1-Figure 4The present embodiment is described based on the specific embodiment one. The present embodiment is a radial hole angle adjustable thin shaft rod drilling tool. The left and right ends of the positioning device 1 respectively symmetrically process the end hole processing holes 13. The end hole processing holes 13 are provided with drill sleeves 14. The end hole processing holes 13 are convenient for processing the end holes on both sides of the thin shaft rod, so that the end hole processing position is more accurate. The setting of the drill sleeve 14 prevents the drill bit from causing irreversible wear to the device when it is used for processing multiple times, thereby affecting the processing accuracy and service life.

[0035] Specific implementation method three: Combination Figure 1-Figure 4 The present embodiment is described based on the specific embodiment one. The present embodiment is a radial hole angle adjustable thin shaft rod drilling tool, the adjustable inclined hole limit device 2 is processed with a slot 25, and the positioning device 1 is arranged in the slot 25 to realize the installation of the relative position of the positioning device 1 and the adjustable inclined hole limit device 2.

[0036] Specific implementation method four: Combination Figure 1-Figure 4 The present embodiment is described. The present embodiment is a radial hole angle adjustable thin shaft rod drilling tool. The adjustable inclined hole limiting device 2 comprises a fixed block 21 and an adjusting block 22. A second mounting hole 31 is processed at one end of the adjusting block 22. The middle part of the thin shaft rod 3 to be processed is slidably installed in the second mounting hole 31. A screw mounting hole (213) is processed at the other end of the fixed block 21. An arc-shaped slot hole 23 is processed at the other end of the adjusting block 22. A fixed screw sleeve (241) in an adjusting screw sleeve assembly 24 is installed in the arc-shaped slot hole (23) of the adjusting block (22). The fixed block 21 and the adjusting block 22 are connected and installed through the adjusting screw sleeve assembly 24. The fixed block 21 The adjusting block 22 is installed on the positioning device 1 through the axial adjustment screw 5. The adjusting block 22 can be slidably adjusted in the arc direction relative to the fixed block 21 with the thin shaft 3 to be processed as the center of the circle, so as to process the radial holes of the thin shaft 3 to be processed at various angles. The adjusting block 22 is provided with an arc-shaped slot 23. When the adjusting block 22 is rotated along the thin shaft 3 to be processed to adjust the angle with the radial holes at both ends of the shaft, the fixed screw sleeve (241) in the adjusting screw sleeve assembly 24 slides relatively in the arc-shaped slot 23. When the adjusting block 22 is adjusted to the required angle, the screw (242) in the adjusting screw sleeve assembly 24 is tightened to realize the adjustment method of the angle of the radial inclined hole of the thin shaft 3 to be processed.

[0037] Specific implementation method five: Combination Figure 1-Figure 4 The present embodiment is described as a radial hole angle adjustable thin-shaft rod drilling tool. The adjusting block 22 has an inclined hole processing hole 221. A drill sleeve 14 is arranged in the inclined hole processing hole 221. The inclined hole processing hole 221 facilitates the processing of radial holes.

[0038] Specific implementation method six: Combination Figure 1-Figure 4The present embodiment is described as a fine-shaft drilling tool with an adjustable radial hole angle. The fixed block 21 is provided with an angle scale 211, and the adjusting block 22 is provided with an arrow 222, for easy reading of the angle value of the radial angle of the inclined hole. An angle line and an initial angle value α are engraved on the outer arc surface of the fixed block 21, and a "▲" positioning symbol is engraved on the corresponding arc surface of the adjusting block 22, for easy reading of the angle value when adjusting the angle of the inclined hole drilling template.

[0039] Specific implementation method seven: Combination Figure 1-Figure 4 The present embodiment is described. The present embodiment is a tool for drilling a thin shaft rod with an adjustable radial hole angle. A waist-shaped hole 212 is processed on the fixed block 21. The axial adjustment screw 5 is arranged in the waist-shaped hole 212. The waist-shaped hole 212 facilitates the axial adjustment of the adjustable inclined hole limiting device 2 relative to the thin shaft rod 3 to be processed. According to the different axial positions of the inclined hole on the thin shaft rod 3 to be processed, the axial position of the fixed block 21 is adjusted to realize the adjustment method of the axial position of the inclined hole.

[0040] Specific implementation method eight: Combination Figure 1-Figure 4 The present embodiment is described. The present embodiment is a radial hole angle adjustable thin shaft rod drilling tool, which also includes an inclined pad 6. The adjustable inclined hole limit device 2 is arranged on the inclined pad 6, which is convenient for the adjustable inclined hole limit device 2 to be installed on the processing machine tool. The inclined pad 6 is customized according to different models of bench drill workbenches. Figure 6 A schematic diagram of the structure of the inclined pad 6 in one embodiment is given.

[0041] Specific implementation method nine: Combination Figure 1-Figure 6 The present embodiment is described as follows. The present embodiment is a radial hole angle adjustable thin shaft rod drilling tool. The specific use method is as follows:

[0042] like Figure 1-Figure 3 As shown, before use, the fixing block 21 is adjusted into position according to the axial position requirement of the inclined hole and fixed to the positioning device 1 with the adjusting screw 5 .

[0043] When in use, the thin shaft rod 3 to be processed is passed through the first mounting hole 12 from one end of the positioning device 1, and then through the second mounting hole 31 on the adjusting block 22. After the two ends of the processed thin shaft rod 3 are flush with the left and right sides of the positioning device 1, the shaft end fixing screws 4 are tightened.

[0044] When the tool is used for the first time, the axial position and radial angle of the drilled inclined hole are adjusted as required. First, the fixing block 21 is adjusted to the required position, and the fixing block 21 is fastened to the positioning device 1 through the waist-shaped hole 212 on the fixing block 21 with the adjusting screw 5.

[0045] Then, the adjusting block 22 is rotated with the thin shaft 3 to be processed as the rotation axis, and the positioning symbol "▲" on the adjusting block 22 is adjusted to the angle value corresponding to the angle scale on the outer arc surface of the fixing block 21. The screw (242) in the adjusting screw sleeve assembly 24 is passed through the screw mounting hole (213) on the fixing block 21 to connect and tighten it with the fixing sleeve (241) in the arc slot hole 23 on the adjusting block 22, so that the adjusting block 22 is adjusted in place. Depending on the batch, the radial hole angle adjustment needs to be performed while keeping the screw (242) and the fixing sleeve (241) connected. Loosen the screw (242) in the adjusting screw-screw sleeve assembly 24, and rotate the adjusting block 22 with the thin shaft 3 to be processed as the axis. At this time, the fixed screw sleeve (241) can slide relatively in the arc-shaped slot hole 23 of the adjusting block 22. After the adjusting block 22 is adjusted to the required angle, tighten the screw (242) connected to the fixed screw sleeve (241), and fix the adjusting block 22 on the fixed block 21 through the adjusting screw-screw sleeve assembly 24, so that it is completely fixed to the positioning device 1 as a whole, so as to be used for processing inclined holes with different angles in the same radial direction, such as Figure 6 shown.

[0046] When drilling, the drilling jig that has been clamped and adjusted into place for the thin shaft rod 3 to be processed is placed on the workbench of the bench drill twice, and the drill bit is aligned with the drill sleeve 14 on the end hole processing hole 13 and the inclined hole processing hole 221 to complete the drilling of the two end holes and the middle inclined hole of the thin shaft rod 3 to be processed.

[0047] like Figure 4 As shown, the tooling is then turned over so that the upper inclined surface of the adjustment block 22 faces downward and is placed as a reference bottom surface on the customized inclined pad 6 of the bench drill workbench, and the drill bit is aligned with the drill sleeve 14 on the inclined hole processing hole 221 to complete the inclined hole processing on the thin shaft rod 3 to be processed.

[0048] After the drilling process is completed, the two shaft end fixing screws 4 of the shaft end are loosened, and the thin shaft rod 3 to be processed is taken out along the direction of the first mounting hole 12 .

[0049] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0050] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0051] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0052] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0053] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0054] It should be noted that in the above embodiments, as long as the technical solutions are not contradictory, they can be arranged and combined, and those skilled in the art can exhaust all possibilities based on the mathematical knowledge of arrangement and combination. Therefore, the present invention will no longer describe the technical solutions after arrangement and combination one by one, but it should be understood that the technical solutions after arrangement and combination have been disclosed by the present invention.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A radial hole angle adjustable thin shaft rod drilling tool, characterized in that: The invention comprises a positioning device (1) and an adjustable inclined hole limiting device (2), wherein a second mounting hole (31) is machined on the adjustable inclined hole limiting device (2), and the middle part of the thin shaft rod (3) to be machined is mounted in the second mounting hole (31), and the left and right ends of the positioning device (1) are respectively machined with a limiting fixing hole (11) and a first mounting hole (12), and the two ends of the thin shaft rod (3) to be machined are respectively mounted in the first mounting hole (12), and the shaft end fixing screw (4) is tightened and fixed to the thin shaft rod (3) to be machined through the limiting fixing hole (11), and the adjustable inclined hole limiting device (2) is mounted on the positioning device (1) through an axial adjustment screw (5); The left and right ends of the positioning device (1) are symmetrically machined with end holes (13); The adjustable inclined hole limiting device (2) comprises a fixed block (21) and an adjusting block (22); a second mounting hole (31) is machined on one end of the adjusting block (22); the middle part of the thin shaft rod (3) to be machined is slidably mounted in the second mounting hole (31); a screw mounting hole (213) is machined on the other end of the fixed block (21); a screw (242) in the adjusting screw sleeve assembly (24) is mounted in the screw mounting hole (213); an arc-shaped slot hole (23) is machined on the other end of the adjusting block (22); a fixed screw sleeve (241) in the adjusting screw sleeve assembly (24) is mounted in the arc-shaped slot hole (23) of the adjusting block (22); the fixed block (21) and the adjusting block (22) are connected and mounted via the adjusting screw sleeve assembly (24); the fixed block (21) is mounted on the positioning device (1) via an axial adjustment screw (5); and the adjusting block (22) has an inclined hole machining hole (221); A drill sleeve (14) is arranged in the end hole processing hole (13), and a drill sleeve (14) is arranged in the inclined hole processing hole (221); The fixing block (21) is machined with a waist-shaped hole (212), and the axial adjustment screw (5) is arranged in the waist-shaped hole (212); It also includes an inclined pad block (6), and the adjustable inclined hole limiting device (2) is arranged on the inclined pad block (6); Before use, the fixing block (21) is adjusted to the axial position of the inclined hole and fixed to the positioning device (1) with the adjusting screw (5); When in use, the thin shaft rod (3) to be processed is passed through the first mounting hole (12) from one end of the positioning device (1), and then passes through the second mounting hole (31) on the adjustment block (22). After the two ends of the processed thin shaft rod (3) are flush with the left and right sides of the positioning device (1), the shaft end fixing screws (4) are tightened. When the tooling is used for the first time, the axial position and radial angle of the oblique hole to be drilled are adjusted as required. First, the fixing block (21) is adjusted to the required position, and the fixing block (21) is fastened to the positioning device (1) through the waist-shaped hole (212) on the fixing block (21) by using the adjusting screw (5); Then, the adjusting block (22) is rotated with the thin shaft (3) to be processed as the rotating axis, and the positioning mark on the adjusting block (22) is adjusted to the angle value corresponding to the angle scale on the outer arc surface of the fixed block (21), and the screw (242) in the adjusting screw sleeve assembly (24) is passed through the screw mounting hole (213) on the fixed block (21) so that it is connected and tightened with the fixed screw sleeve (241) in the arc slot hole (23) on the adjusting block (22), so that the adjusting block (22) is adjusted in place; depending on the batch, the radial hole angle adjustment needs to be performed while keeping the screw (242) and the fixed screw sleeve (241) connected. The process is performed under the state; the screw (242) in the adjusting screw sleeve assembly (24) is loosened, and the adjusting block (22) is rotated with the thin shaft (3) to be processed as the axis. At this time, the fixed screw sleeve (241) can slide relatively in the arc slot (23) of the adjusting block (22). After the adjusting block (22) is adjusted to the required angle, the screw (242) connected to the fixed screw sleeve (241) is tightened, and the adjusting block (22) is fixed to the fixed block (21) through the adjusting screw sleeve assembly (24), so that it is completely fixed to the positioning device (1) to form an integral body, so as to be used for processing inclined holes with different angles in the same radial direction; When drilling, the drilling jig that has been clamped and adjusted to the position of the thin shaft rod (3) to be processed is placed on the workbench of the bench drill in both directions, and the drill bit is aligned with the drill sleeve (14) on the end hole processing hole (13) and the inclined hole processing hole (221) to complete the processing of the two end holes and the middle inclined hole of the thin shaft rod (3) to be processed; Then, the tooling is turned over so that the upper inclined surface of the adjustment block (22) faces downward and is placed on the customized inclined pad (6) of the bench drill workbench as the reference bottom surface, and the drill bit is aligned with the drill sleeve (14) on the inclined hole processing hole (221) to complete the inclined hole processing on the thin shaft rod (3) to be processed; After the drilling process is completed, the two shaft end fixing screws (4) are loosened and the thin shaft rod (3) to be processed is taken out along the direction of the first mounting hole (12).

2. The radial hole angle adjustable thin shaft rod drilling tool according to claim 1, characterized in that: The adjustable inclined hole limiting device (2) is processed with a slot (25), and the positioning device (1) is arranged in the slot (25).

3. The radial hole angle adjustable thin shaft rod drilling tool according to claim 2, characterized in that: The fixed block (21) is provided with an angle scale (211), and the adjustment block (22) is provided with an arrow (222).

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