Portable inclined hole drilling tool

Abstract

The invention belongs to the field of drilling tools, and particularly relates to a portable inclined hole drilling tool which comprises a tool base, a tool inclined plate and magnetic blocks, the tool inclined plate is arranged at the top of the tool base, inclined fixing assemblies are arranged at the front ends of the two sides of the tool base and the tool inclined plate, and the magnetic blocks are fixed to the bottom of the tool base. The front end of the tool inclined plate is lifted to be matched with a hinge structure to achieve inclination, common adjusting angles cover 15 degrees, 30 degrees, 45 degrees, 60 degrees, 75 degrees and 90 degrees, a plurality of angle ranges can be flexibly set between 0 degree and 90 degrees according to actual requirements, the angle range can be adjusted, the angle range can be adjusted, the angle range can be adjusted, the angle range can be adjusted, and the angle range can be adjusted. For example, ten external grooves are arranged to realize angle adjustment at intervals of 10 degrees. In the adjusting process, due to the specific structures of the external groove, the sleeve, the reset spring, the clamping block and the clamping groove, the common angle can be directly adjusted, fine operation of tightening a pointer is not needed, and the adjusting convenience and the working efficiency are greatly improved.

Description

Technical Field

[0001] The present invention belongs to the field of drilling tooling, specifically a portable inclined hole drilling tooling. Background Art

[0002] In the field of machining, the operation of drilling inclined holes has long faced many challenges. Most traditional drilling equipment has a fixed angle or can only be adjusted at a limited angle, making it difficult to meet the complex and diverse processing requirements. When it is necessary to drill inclined holes with precise angles on workpieces of different materials and shapes, the disadvantage of poor flexibility of the existing tooling becomes prominent.

[0003] On the one hand, in some small machining workshops, workers often need to manually adjust the angle of the drilling equipment. This operation method not only consumes a large amount of manpower and time, but also the accuracy of angle adjustment depends on the experience of the workers, making it difficult to ensure consistency, resulting in uneven quality of the drilled inclined holes and a high rejection rate.

[0004] On the other hand, for large machining enterprises, although they have relatively advanced equipment, the equipment is large in volume and complex in structure, making it inconvenient to transfer between different work sites. When faced with some projects that require on-site operation and limited space, the large equipment is difficult to use, and the high equipment maintenance cost also increases the burden on the enterprise.

[0005] Therefore, the present invention provides a portable inclined hole drilling tooling. Summary of the Invention

[0006] In order to make up for the deficiencies of the existing technology and solve at least one of the technical problems proposed in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: The portable inclined hole drilling tooling of the present invention includes a tooling base, a tooling inclined plate and a magnetic block. The top of the tooling base is provided with a tooling inclined plate. Inclined fixing components are provided at the front ends on both sides of the tooling base and the tooling inclined plate. A magnetic block is fixed to the bottom of the tooling base. Connecting blocks one are fixed to both sides at the rear end of the tooling inclined plate. Connecting blocks two are fixed to both sides at the rear end of the tooling base. The connecting blocks two are located on one side of the connecting blocks one. A connecting component is provided on the side of the connecting blocks two facing the connecting blocks one.

[0008] Preferably, the inclined fixing component includes lead screws provided at the front ends on both sides of the tooling base and the tooling inclined plate. Nuts one are threadedly connected to the upper and lower ends of the lead screws. Connecting grooves are provided at the front ends on both sides of the inner parts of the tooling base and the tooling inclined plate. Connecting holes are provided at the front ends on both sides of the side walls of the tooling base and the tooling inclined plate. The connecting holes are connected to the inside of the connecting grooves. Two connecting sleeves are sleeved on the outside of each lead screw. The connecting sleeves are respectively located on one side of the connecting holes. A connecting pin is rotatably provided in the connecting holes. The connecting pin is fixed to one side of the connecting sleeve. A nut two is provided in the connecting grooves. The nut two is threadedly connected to the end of the connecting pin and abuts against the inner side wall of the connecting grooves.

[0009] Preferably, the connecting component includes a hinge groove formed on one side of the second connecting block, the hinge groove faces the side of the first connecting block, outer sleeve rings are fixed on both sides inside the hinge groove, a hinge shaft is rotatably arranged inside the outer sleeve rings, the hinge shaft is fixed on one side of the first connecting block, rotating rings are fixed on both sides outside the hinge shaft, the rotating rings are rotatably arranged inside the outer sleeve rings, an extension shaft is fixed at the middle position on the other side of the hinge shaft, the extension shaft is rotatably arranged inside the second connecting block, the extension shaft protrudes from the other side of the second connecting block and is fixed with an external disk, a pointer is fixed on the top of the external disk, an arc-shaped scale is arranged above the pointer, the arc-shaped scale is fixed on the outer side wall of the second connecting block, and a pre-fixing component is arranged between the external disk and the second connecting block.

[0010] Preferably, the pre-fixing component includes external slots formed at equal intervals on the outer side wall of the second connecting block, the external slots are located below the pointer, a sleeve is fixed inside the external slots, a return spring is fixed inside the sleeve, a clamping block is fixed at the end of the return spring, the clamping block protrudes from the front end of the sleeve and is clamped into a clamping groove, and the clamping groove is formed on the outer side wall of the external disk facing the second connecting block.

[0011] Preferably, a pushing cavity is formed on the outer periphery at the middle position inside the hinge groove, a stress plate is arranged inside the pushing cavity, a resisting block is fixed at the end of the stress plate facing the hinge shaft, the resisting block is placed inside the hinge groove and abuts against the outer side wall of the hinge shaft, a retracting spring is fixed at the other end of the stress plate, a threaded groove is arranged on the outer periphery of the extension shaft, the threaded groove is formed inside the second connecting block, a threaded pin is threadedly connected inside the threaded groove, an internal slot is formed at the end of the threaded groove facing the pushing cavity, a pushing tube is embedded inside the internal slot, a piston is arranged inside the pushing tube, a connecting rod is fixed between the piston and the threaded pin, and an oil guiding groove is formed at the end of the internal slot facing the pushing cavity, and the oil guiding groove is communicated with the inside of the pushing cavity.

[0012] The beneficial effects of the present invention are as follows: 1. For the portable inclined hole drilling tooling of the present invention, it is tilted by lifting the front end of the tooling inclined plate in cooperation with the hinge structure. The commonly used adjustment angles cover 15°, 30°, 45°, 60°, 75° and 90°, and multiple angle ranges can be flexibly set between 0° and 90° according to actual needs, such as setting ten external slots to achieve angle adjustment at 10° intervals. During the adjustment process, with the specific external slots, sleeves, return springs, clamping blocks and clamping groove structures, the commonly used angles can be directly adjusted without closely watching the pointer for fine operation, greatly improving the adjustment convenience and work efficiency.

[0013] 2. For the portable inclined hole drilling tooling of the present invention, when the tooling inclined plate is tilted, the first connecting block drives the hinge shaft to rotate, and then the pointer rotates on the arc-shaped scale, accurately indicating the inclination angle and providing an intuitive and clear angle reference for the operator.

[0014] 3. For the portable inclined hole drilling tooling of the present invention, after adjusting the inclined plate of the tooling to the required inclined position, tightening the second nut can fix the position of the connecting sleeve and fix the inclined angle. At the same time, by rotating the threaded pin to push the hydraulic oil, the hydraulic oil acts to make the abutting block tightly abut against the outer wall of the hinge shaft, assisting in fixing the position of the hinge shaft, effectively preventing the inclination deviation caused by unstable angle fixation during the processing operation, and ensuring the processing quality and accuracy.

[0015] 4. For the portable inclined hole drilling tooling of the present invention, by using the magnetic blocks at the bottom of the tooling base, it can be quickly adsorbed on the upper platen of the tooling, realizing the simple installation of the tooling, and greatly saving the installation time and labor cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the drawings.

[0017] Figure 1 is the overall structure in the present invention Figure 1 ; Figure 2 is the overall structure in the present invention Figure 2 ; Figure 3 is the expanded structure diagram of the tooling in the present invention; Figure 4 is the partial structure splitting diagram in the present invention; Figure 5 is the partial structure of the hinge assembly in the present invention Figure 1 ; Figure 6 is the cross-sectional view of the partial structure of the hinge assembly in the present invention; Figure 7 is in the present invention Figure 6 The enlarged structure diagram at position A; Figure 8 is the cross-sectional view of the side structure of the hinge assembly in the present invention; Figure 9 is the partial structure of the hinge assembly in the present invention Figure 2 ; Figure 10 is the partial structure splitting diagram of the hinge assembly in the present invention; Figure 11 is in the present invention Figure 10 The enlarged structure diagram at position B; Figure 12 is the structure diagram of the pointer and the card slot in the present invention; Figure 13 is the cross-sectional view of the partial structure of the external disk in the present invention.

[0018] In the figure: 1, tooling base; 2, tooling inclined plate; 3, connecting groove; 31, lead screw; 32, connecting sleeve; 33, connecting hole; 34, first nut; 35, connecting pin; 36, second nut; 4, magnetic block; 5, first connecting block; 51, hinge groove; 52, hinge shaft; 53, outer sleeve ring; 54, rotating ring; 55, extension shaft; 56, external disc; 57, pointer; 58, arc scale; 59, external groove; 591, sleeve; 592, return spring; 593, clamping block; 594, clamping groove; 6, second connecting block; 61, threaded groove; 62, threaded pin; 63, internal groove; 64, injection tube; 65, connecting rod; 66, piston; 67, oil guide groove; 68, pressing cavity; 69, stress plate; 610, retraction spring; 611, abutting block. Detailed implementation manners

[0019] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0020] As Figures 1 to 13 shown, the portable inclined hole drilling tooling of the embodiment of the present invention includes a tooling base 1, a tooling inclined plate 2 and a magnetic block 4. A tooling inclined plate 2 is arranged on the top of the tooling base 1. Inclined fixing components are arranged at the front ends on both sides of the tooling base 1 and the tooling inclined plate 2. A magnetic block 4 is fixed to the bottom of the tooling base 1. First connecting blocks 5 are fixed to both sides of the rear end of the tooling inclined plate 2. Second connecting blocks 6 are fixed to both sides of the rear end of the tooling base 1. The second connecting blocks 6 are located on one side of the first connecting blocks 5. A connecting component is arranged on the side of the second connecting blocks 6 facing the first connecting blocks 5.

[0021] The inclined fixing component includes lead screws 31 arranged at the front ends on both sides of the tooling base 1 and the tooling inclined plate 2. First nuts 34 are threadedly connected to the upper and lower ends of the lead screws 31. Connecting grooves 3 are opened at the front ends of both sides inside the tooling base 1 and the tooling inclined plate 2. Connecting holes 33 are opened at the front ends of both side walls of the tooling base 1 and the tooling inclined plate 2. The connecting holes 33 are communicated with the inside of the connecting grooves 3. Two connecting sleeves 32 are sleeved on the outside of each lead screw 31. The connecting sleeves 32 are respectively located on one side of the connecting holes 33. A connecting pin 35 is rotatably arranged inside the connecting holes 33. The connecting pin 35 is fixed to one side of the connecting sleeve 32. Second nuts 36 are arranged inside the connecting grooves 3. The second nuts 36 are threadedly connected to the ends of the connecting pins 35 and are in contact with the inner side walls of the connecting grooves 3.

[0022] The connecting component includes a hinge groove 51 formed on one side of the second connecting block 6, the hinge groove 51 faces the side of the first connecting block 5, both sides inside the hinge groove 51 are fixed with outer sleeve rings 53, a hinge shaft 52 is rotatably arranged inside the outer sleeve rings 53, the hinge shaft 52 is fixed to one side of the first connecting block 5, both sides outside the hinge shaft 52 are fixed with rotating rings 54, the rotating rings 54 are rotatably arranged inside the outer sleeve rings 53, an extension shaft 55 is fixed at the middle position on the other side of the hinge shaft 52, the extension shaft 55 is rotatably arranged inside the second connecting block 6, the extension shaft 55 protrudes from the other side of the second connecting block 6 and is fixed with an external disk 56, a pointer 57 is fixed on the top of the external disk 56, an arc scale 58 is arranged above the pointer 57, the arc scale 58 is fixed on the outer side wall of the second connecting block 6, and a pre-fixing component is arranged between the external disk 56 and the second connecting block 6.

[0023] The pre-fixing component includes external slots 59 formed at equal intervals on the outer side wall of the second connecting block 6, the external slots 59 are located below the pointer 57, a sleeve 591 is fixed inside the external slots 59, a return spring 592 is fixed inside the sleeve 591, a clamping block 593 is fixed at the end of the return spring 592, the clamping block 593 protrudes from the front end of the sleeve 591 and is clamped into a clamping groove 594, and the clamping groove 594 is formed on the outer side wall of the external disk 56 facing the second connecting block 6.

[0024] A pushing cavity 68 is formed on the outer periphery at the middle position inside the hinge groove 51, a stress plate 69 is arranged inside the pushing cavity 68, a resisting block 611 is fixed at the end of the stress plate 69 facing the hinge shaft 52, the resisting block 611 is placed inside the hinge groove 51 and is in tight contact with the outer side wall of the hinge shaft 52, a retracting spring 610 is fixed at the other end of the stress plate 69, a threaded groove 61 is arranged on the outer periphery of the extension shaft 55, the threaded groove 61 is formed inside the second connecting block 6, a threaded pin 62 is in threaded connection inside the threaded groove 61, an internal slot 63 is formed at the end of the threaded groove 61 facing the pushing cavity 68, a pushing injection pipe 64 is embedded inside the internal slot 63, a piston 66 is arranged inside the pushing injection pipe 64, a connecting rod 65 is fixed between the piston 66 and the threaded pin 62, and an oil guiding groove 67 is formed at the end of the internal slot 63 facing the pushing cavity 68, and the oil guiding groove 67 is communicated with the inside of the pushing cavity 68.

[0025] Specifically, a hinge structure is realized between the back end of the tooling base 1 and the tooling inclined plate 2 by means of the connecting component. A magnetic block 4 is arranged at the bottom of the tooling base 1. When actually installing the tooling, the tooling base 1 is placed on the surface of the tooling upper platen, and by using the strong magnetic force of the magnetic block 4, it is tightly adsorbed on the tooling upper platen, quickly and conveniently completing the installation of the entire tooling and laying a solid foundation for the subsequent operation links.

[0026] Figure 1It clearly shows the intuitive appearance of the tooling inclined plate 2 in a horizontal state. In actual operation, the staff only needs to manually lift the front end of the tooling inclined plate 2. At this time, since the tooling base 1 and the rear end of the tooling inclined plate 2 are hinged through a connecting component, the tooling inclined plate 2 will be slowly lifted up with the hinge point as the axis under the drive of the lifting action, thereby making it appear in an inclined state. This inclined state is Figure 3 The drilling equipment is installed on the tooling inclined plate 2. Once the tooling inclined plate 2 is tilted, the drilling equipment installed on it will also tilt synchronously. In this way, with the help of the tilted drilling equipment, the staff can easily and efficiently perform the inclined hole drilling operation, which greatly meets the needs of various complex processing scenarios for inclined hole processing.

[0027] When the front end of the tooling inclined plate 2 is lifted upward and gradually tilted, a series of coordinated actions will occur in the connecting sleeves 32 hinged by the connecting pins 35 on both sides of the tooling inclined plate 2. The connecting sleeve 32 will slide upward along the axial direction of the screw rod 31 outside the screw rod 31, and at the same time, the connecting sleeve 32 will also rotate with the connecting pin 35 as the axis. In this process, the rotation of the connecting sleeve 32 will generate a driving force, causing the screw rod 31 to tilt with the connecting pins 35 of the connecting sleeves 32 on both sides of the tooling base 1 as the axis. When the staff adjusts the tooling inclined plate 2 to the desired tilting position, they only need to tighten the nut 36, and the nut 36 will apply pressure to the connecting sleeve 32, thereby firmly pressing the position of the connecting sleeve 32. At this point, the adjustment operation of the tilt angle of the tooling inclined plate 2 is successfully completed.

[0028] Further, when the tooling inclined plate 2 is lifted to adjust its inclination angle, the first connecting block 5 drives the hinge shaft 52 closely connected thereto to rotate synchronously. At the same time, outside the hinge shaft 52, a rotating ring 54 is fixed, and the rotating ring 54 is located inside the outer sleeve ring 53. When the hinge shaft 52 rotates, the rotating ring 54 will rotate smoothly inside the outer sleeve ring 53. This rotation method can not only ensure the stability of the rotation of the hinge shaft 52, but also effectively reduce the friction during the rotation. The rotation of the hinge shaft 52 will also drive the extension shaft 55 and the external disk 56 connected to the extension shaft 55 to rotate together through mechanical transmission. The rotation of the external disk 56 will further drive the pointer 57 to rotate around the fixed axis. Among them, the position pointed by the pointer 57 is of great significance. It points to the scale on the arc-shaped scale 58. When the tooling inclined plate 2 is in the initial horizontal state, the pointer 57 exactly and accurately points to the 0° position on the arc-shaped scale 58. Subsequently, when the operator manually lifts the tooling inclined plate 2 to make it gradually inclined, the external disk 56 will drive the pointer 57 to rotate together. The pointer 57 will start from the original 0° position pointing to the arc-shaped scale 58 and gradually rotate to point to other scales. For example, when the tooling inclined plate 2 is inclined to 45°, the external disk 56 drives the pointer 57 to rotate synchronously by 45°. At this time, the pointer 57 will accurately point to the 45° position on the arc-shaped scale 58.

[0029] In actual production operations, the commonly used adjustment angles for the inclination of the tooling inclined plate 2 are 15°, 30°, 45°, 60°, 75° and 90°. This is Figure 9 intuitively reflected in Figure 9 As shown in the figure, six external slots 59 are provided in the figure. The positions of these six external slots 59 correspond to the six common angles of 15°, 30°, 45°, 60°, 75° and 90° respectively. It should be noted that the angular intervals between adjacent external slots 59 are all 15°. Inside each external slot 59, a set of mechanical structures are provided, including a sleeve 591, a return spring 592 and a clamping block 593. On the side wall of the external disk 56, twelve clamping slots 594 are evenly provided. During the adjustment process of the inclination angle of the tooling inclined plate 2, the six clamping blocks 593 will sequentially be clamped in six of the clamping slots 594 on one side.

[0030] The specific working process is as follows: When the staff member lifts the tooling inclined plate 2 and rotates the external disk 56 by 15°, the side wall of the external disk 56 will first squeeze the six clamping blocks 593. Under the squeezing force, the clamping blocks 593 retract into the sleeve 591. At the same time, during the process of the clamping blocks 593 retracting into the sleeve 591, they will squeeze the return spring 592, causing the return spring 592 to contract and store elastic potential energy. When the rotation of the external disk 56 by 15° is completed, the six clamping blocks 593 will sequentially move to the positions of the adjacent card slots 594. At this time, the return spring 592 begins to release the previously stored elastic potential energy, and uses its strong elastic force to push the clamping blocks 593 to quickly snap into the card slots 594. Thus, the adjustment work of the tooling inclined plate 2 tilting by 15° is completed. If it is necessary to adjust the tooling inclined plate 2 to tilt by 30°, the staff member only needs to lift the tooling inclined plate 2 again, and the six clamping blocks 593 will rotate by 15° again and snap into the adjacent card slots 594, so that the tooling inclined plate 2 can be smoothly tilted to 30°. In this way, the staff can conveniently perform direct adjustment of the six common angles of 15°, 30°, 45°, 60°, 75°, and 90°, without the staff constantly staring at the pointing angle of the pointer 57 and then performing cumbersome and precise corresponding adjustment operations, greatly improving the convenience and working efficiency of the angle adjustment of the tooling inclined plate 2.

[0031] Here, it is particularly necessary to note that in the actual tooling application scenario, multiple angle ranges between 0° and 90° can be flexibly set according to different actual usage requirements. For example, if ten external slots 59 are set between 0° and 90°, and the angle interval between each external slot 59 is 10°, then when the staff member adjusts the tilting angle of the tooling inclined plate 2, they can easily achieve precise adjustment of these angles of 10°, 20°, 30°, 40°, 50°, 60°, 70°, 80°, and 90°, fully demonstrating the high flexibility and wide applicability of this tooling in terms of angle adjustment.

[0032] Further, in order to further improve the stability of the tooling inclined plate 2 after the inclination angle is fixed, during the tooling design, an appropriate amount of hydraulic oil is pre-filled in the injection pipe 64, the oil guide groove 67 and the pressing cavity 68. When the tooling inclined plate 2 is inclined to the required position and its position is locked and fixed with the nut two 36, the staff rotates the threaded pin 62. During the rotation of the threaded pin 62, the connecting rod 65 and the piston 66 connected to the connecting rod 65 will be pushed to move. The movement of the piston 66 will push the hydraulic oil in the injection pipe 64 into the pressing cavity 68 through the oil guide groove 67. Under the strong pressure of the hydraulic oil, the hydraulic oil in the pressing cavity 68 will drive the abutting block 611 to move through the pressing force receiving plate 69 until the abutting block 611 tightly abuts against the outer wall of the hinge shaft 52. Through such an operation, the auxiliary fixing operation of the position of the hinge shaft 52 can be successfully completed. Among them, when the force receiving plate 69 moves under the strong pressure of the hydraulic oil, a pulling force will be generated on the retraction spring 610, causing the retraction spring 610 to elongate and store elastic potential energy. When the staff needs to adjust the inclination angle of the tooling inclined plate 2 again, first, the auxiliary fixing operation of the hinge shaft 52 needs to be stopped. At this time, the staff only needs to reverse the threaded pin 62. The reverse rotation of the threaded pin 62 will drive the connecting rod 65 and the piston 66 to rotate synchronously. Under the rotation action of the piston 66, in cooperation with the oil guide groove 67, the hydraulic oil in the pressing cavity 68 is pumped into the injection pipe 64. As the hydraulic oil in the pressing cavity 68 decreases, the force receiving plate 69 that loses the action of the hydraulic oil pressure will be affected by the elastic force of the elastic potential energy stored in the retraction spring 610 before, so it will move in the reverse direction and drive the abutting block 611 away from the hinge shaft 52. Thus, the auxiliary fixing operation of the hinge shaft 52 is successfully stopped. Performing an auxiliary fixing treatment on the hinge shaft 52 can significantly improve the stability of the inclination angle position of the tooling inclined plate 2, effectively ensuring that during various processing operations, it will not cause deviations in the inclination due to problems such as insecure angle fixing, thereby affecting the quality and accuracy of the processed products.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A portable inclined hole drilling tool, comprising a tool base (1), a tool inclined plate (2) and a magnetic block (4), characterized in that: A tooling inclined plate (2) is arranged on the top of the tooling base (1), and tilting fixing components are arranged at the front ends of both sides of the tooling base (1) and the tooling inclined plate (2). A magnetic block (4) is fixed to the bottom of the tooling base (1), and connecting blocks 1 (5) are fixed to both sides of the rear end of the tooling inclined plate (2). Connecting blocks 2 (6) are fixed to both sides of the rear end of the tooling base (1), and connecting blocks 2 (6) are located on one side of connecting block 1 (5). A connecting component is arranged on the side of connecting block 2 (6) facing connecting block 1 (5).

2. The portable inclined hole drilling tool according to claim 1 is characterized in that: The tilting and fixing assembly comprises screw rods (31) arranged at the front ends of both sides of the tooling base (1) and the tooling inclined plate (2), the upper and lower ends of the screw rods (31) being threadedly connected to nuts (34), the front ends of both sides of the tooling base (1) and the tooling inclined plate (2) being provided with connecting grooves (3), the front ends of both side walls of the tooling base (1) and the tooling inclined plate (2) being provided with connecting holes (33), the connecting holes (33) being connected to the inside of the connecting grooves (3), the outer sleeve of each screw rod (31) being provided with two connecting sleeves (32), the connecting sleeves (32) being respectively located on one side of the connecting holes (33), the inner sleeves of the connecting holes (33) being rotatably provided with connecting pins (35), the connecting pins (35) being fixed to one side of the connecting sleeves (32), the inner sleeves of the connecting grooves (3) being provided with nuts (36), the nuts (36) being threadedly connected to the ends of the connecting pins (35) and being tightly pressed against the inner side wall of the connecting grooves (3).

3. The portable inclined hole drilling tool according to claim 2 is characterized in that: The connection assembly comprises a hinge groove (51) formed on one side of the second connection block (6), the hinge groove (51) facing one side of the first connection block (5), outer rings (53) fixed on both sides of the hinge groove (51), a hinge shaft (52) rotatably arranged in the outer ring (53), the hinge shaft (52) fixed on one side of the first connection block (5), swivels (54) fixed on both sides of the hinge shaft (52), the swivels (54) rotatably arranged in the outer ring (53), and the hinge shaft (52) rotatably arranged in the outer ring (53). An extension shaft (55) is fixed at the middle position of one side, the extension shaft (55) is rotatably arranged inside the second connecting block (6), the extension shaft (55) protrudes from the other side of the second connecting block (6) and is fixed with an external disk (56), a pointer (57) is fixed on the top of the external disk (56), an arc scale (58) is arranged above the pointer (57), and the arc scale (58) is fixed on the outer side wall of the second connecting block (6), and a pre-fixed component is arranged between the external disk (56) and the second connecting block (6).

4. The portable inclined hole drilling tool according to claim 3 is characterized in that: The pre-fixing component comprises external grooves (59) which are arranged at equal intervals on the outer wall of the second connecting block (6); the external grooves (59) are located below the pointer (57); a sleeve (591) is fixed inside the external groove (59); a return spring (592) is fixed inside the sleeve (591); a clamping block (593) is fixed at the end of the return spring (592); the clamping block (593) protrudes from the front end of the sleeve (591) and is clamped into the clamping groove (594); and the clamping groove (594) is arranged on the outer wall of the external disk (56) facing the second connecting block (6).

5. The portable inclined hole drilling tool according to claim 4 is characterized in that: A pushing cavity (68) is provided on the outer periphery of the middle position of the hinge groove (51), a force plate (69) is provided inside the pushing cavity (68), a stop block (611) is fixed to the end of the force plate (69) facing the hinge shaft (52), the stop block (611) is placed in the hinge groove (51) and is tightly pressed against the outer wall of the hinge shaft (52), a retraction spring (610) is fixed to the other end of the force plate (69), a thread groove (61) is provided on the outer periphery of the extension shaft (55), and the thread groove (61) is provided on the second connecting block (6). Inside, the threaded groove (61) is connected to a threaded pin (62) through an internal thread, an internal groove (63) is provided at the end of the threaded groove (61) facing the pushing chamber (68), an injection tube (64) is embedded in the internal groove (63), a piston (66) is provided inside the injection tube (64), a connecting rod (65) is fixed between the piston (66) and the threaded pin (62), an oil guide groove (67) is provided at the end of the internal groove (63) facing the pushing chamber (68), and the oil guide groove (67) is connected to the inside of the pushing chamber (68).

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