Multipurpose deep hole boring tool bit

Abstract

The invention belongs to the field of boring cutters, and particularly relates to a multipurpose deep hole boring cutter bit which comprises a cutter holder, a supporting block and a boring cutter bit body, a fixing groove is formed in the cutter holder, the supporting block is arranged in the fixing groove, the boring cutter bit body is arranged in the supporting block, and the side wall of the cutter holder is in threaded connection with an adjusting bolt. According to the boring tool bit, the problem of shaking caused by the size adaptation problem of the supporting block and the fixing groove in the prior art is solved through the hydraulic device, when the supporting block is installed, the supporting block is fixed through the hydraulic device, and the supporting block is fixed through the hydraulic device. The hydraulic oil suction pump is started, the limiting ejector rod is pushed through hydraulic oil, the stretching-out position can be flexibly adjusted according to the shape change of the supporting blocks, the limiting ejector rod is precisely matched with the supporting blocks of different shapes, stable limiting and fixing are achieved, multiple gaskets of different sizes do not need to be prepared, and special-shaped gaskets do not need to be specially customized.

Description

Technical Field

[0001] The invention belongs to the field of boring cutters, in particular to a multi-purpose deep hole boring cutter head. Background Art

[0002] In the field of mechanical processing, boring heads, as a key cutting tool, play an irreplaceable role in various hole processing tasks. Early boring heads had a relatively simple structure and single function, mainly targeting conventional hole diameters and processing scenarios with low precision requirements; With the continuous development of the manufacturing industry, higher requirements are placed on the precision, surface quality and processing efficiency of mechanical parts. Especially in the aerospace, automobile manufacturing, precision mold and other industries, the demand for deep hole processing is growing, and the requirements for processing accuracy and surface roughness are almost harsh. Traditional boring heads expose many problems when facing deep hole processing. For example, the rigidity of the tool is insufficient, and it is easy to vibrate during the deep hole boring process, which makes it difficult to ensure the cylindricity and straightness of the hole, seriously affecting the processing accuracy. Moreover, the heat dissipation and chip removal of the tool are difficult, the cutting heat cannot be dissipated in time, and the chips are difficult to be discharged smoothly, which will not only accelerate the wear of the tool and reduce the tool life, but may also cause defects such as burns and scratches on the processed surface, greatly affecting the product quality; In addition, the adjustment method of traditional boring heads is relatively cumbersome, and it is difficult to quickly and accurately adapt to the requirements of tool position and cutting parameters for different processing tasks. When faced with workpieces of various specifications and complex processing techniques, it is necessary to frequently change tools or perform complex adjustment operations, which not only consumes a lot of time and manpower, but also reduces production efficiency and increases production costs. These problems have seriously restricted the further development of the manufacturing industry and the improvement of product quality, prompting related fields to continuously explore and develop new boring head technologies to meet the urgent needs of modern manufacturing for high-precision, high-efficiency, and high-reliability processing.

[0003] To this end, the present invention provides a multi-purpose deep hole boring cutter head. Summary of the invention

[0004] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0005] The technical solution adopted by the present invention to solve its technical problem is: the multi-purpose deep hole boring head described in the present invention includes a tool holder, a support block and a boring head body, a fixing groove is opened inside the tool holder, a support block is arranged inside the fixing groove, the boring head body is arranged inside the support block, the side wall of the tool holder is threadedly connected with an adjusting bolt, one end of the adjusting bolt extends into the fixing groove and extends into the support block, and tightly contacts with the side wall of the tool rod of the boring head body, the top end of the tool holder is threadedly connected with a fixing bolt, the bottom end of the fixing bolt extends into the fixing groove and tightly contacts with the top wall of the support block, and a limiting component is arranged inside the tool holder.

[0006] Preferably, the limit assembly includes a built-in groove opened at the front and rear ends of the tool holder, the built-in groove is located at the outer periphery of the fixed groove, a hydraulic oil injection main pipe is arranged inside the built-in groove, both side walls and the inner top wall inside the built-in groove are provided with a support tube, a push piston is arranged inside the support tube, the size of the push piston matches the size of the inside of the support tube, and the push piston can move in the support tube, a limit push rod is fixed at one end of the push piston, the limit push rod extends from the inner wall of the built-in groove into the fixed groove, a return spring is wound around the outside of the limit push rod, the return spring is placed in the support tube, one end of the return spring is fixedly connected to the end of the push piston, and the other end of the return spring is fixedly connected to the front end of the inside of the support tube, a connecting pipe is arranged at the rear end of the support tube, and the connecting pipe is connected to the inside of the support tube.

[0007] Preferably, external holes are provided on the two side walls and the top of the tool holder, the external holes are connected with the interior of the built-in groove, a threaded sleeve is fixed inside the external hole, a push column is connected to the internal thread of the threaded sleeve, a through plug is fixed at the end of the push column, oil grooves are provided at the top and bottom of the through plug, an oil hole is provided at the front end of the through plug, the oil hole is connected with the oil groove, a plurality of oil filling pipes are provided on the inner side wall of the hydraulic oil injection main pipe, the oil filling pipes are connected with the interior of the hydraulic oil injection main pipe, and the number of the oil filling pipes is the same as and corresponds to the connecting pipe, the front end of the oil filling pipe is connected to the connecting pipe, and the through plug is placed at the rear end of the oil filling pipe.

[0008] Preferably, bottom grooves are opened on both sides of the bottom of the built-in groove, a hydraulic oil storage tank is arranged at the bottom end of the bottom groove, a hydraulic oil suction pump is arranged on the top of the hydraulic oil storage tank, an injection port on one side of the hydraulic oil suction pump is provided with oil pipe 1, one end of the oil pipe 1 is connected to the hydraulic oil injection main pipe, and an extraction port on the other side of the hydraulic oil suction pump is provided with oil pipe 2, which is inserted from the top of the hydraulic oil storage tank into the interior thereof and is placed at the bottom end of the hydraulic oil storage tank.

[0009] The beneficial effects of the present invention are as follows: 1. The multi-purpose deep hole boring head described in the present invention solves the shaking problem caused by the size matching problem of the support block and the fixing groove in the traditional way through the hydraulic device. When installing the support block, the hydraulic oil suction pump is started, and the hydraulic oil is used to push the limit push rod, so that it can flexibly adjust the extension position according to the change of the shape of the support block, accurately adapt to support blocks of different shapes, and realize stable limit fixation. There is no need to prepare multiple gaskets of different sizes, nor is there any need to specially customize special-shaped gaskets.

[0010] 2. The multi-purpose deep hole boring head described in the present invention stops the injection of hydraulic oil by blocking the corresponding limit push rod and the rear end connecting pipe of the support tube, ensuring that the limit push rod that does not need to work will not be driven by the hydraulic oil to move at will. The operation is simple and the blocking can be completed by rotating the push column in the threaded sleeve to push the plug into the oil filling pipe.

[0011] 3. The multi-purpose deep hole boring head described in the present invention, when the boring head body is installed, the rod can be flexibly moved in the support block to accurately adjust the head position. When adjusting again later, the boring head body is moved to a suitable point, and the operation can be completed by rotating the adjusting bolt against the side wall of the rod. The turning tool can be directly installed, and the fine-tuning boring tool can also be installed after installing specific accessories. The structure is simple and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below in conjunction with the accompanying drawings.

[0013] Figure 1 The overall structure of the present invention Figure 1 ; Figure 2 The overall structure of the present invention Figure 2 ; Figure 3 It is a disassembled diagram of the overall structure in the present invention; Figure 4 It is a local structure cutaway view of the present invention. Figure 1 ; Figure 5 It is a local structure section view of the present invention Figure 2 ; Figure 6 The present invention Figure 5 The structure diagram at A is enlarged; Figure 7 It is a partial front view of the structure cross-section of the present invention; Figure 8 It is the local structure splitting in the present invention Figure 1 ; Fig. 9 It is the local structure splitting in the present invention Figure 2 .

[0014] In the figure: 1. tool holder; 2. fixing groove; 3. fixing bolt; 4. support block; 5. boring head body; 6. adjusting bolt; 7. built-in groove; 71. hydraulic oil injection main pipe; 711. oil injection pipe; 712. outer hole; 713. threaded sleeve; 714. push column; 715. plug; 716. oil groove; 717. oil hole; 72. support cylinder; 73. push piston; 74. limit push rod; 75. reset spring; 76. connecting pipe; 8. bottom groove; 81. hydraulic oil storage tank; 82. hydraulic oil suction pump; 83. oil pipe 1; 84. oil pipe 2. DETAILED DESCRIPTION

[0015] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0016] like Figures 1 to 9 As shown, the multi-purpose deep hole boring head of the embodiment of the present invention comprises a tool holder 1, a support block 4 and a boring head body 5. A fixing groove 2 is opened inside the tool holder 1, a support block 4 is arranged inside the fixing groove 2, and the boring head body 5 is arranged inside the support block 4. An adjusting bolt 6 is threadedly connected to the side wall of the tool holder 1, one end of the adjusting bolt 6 extends into the fixing groove 2 and extends into the support block 4, and tightly contacts the side wall of the tool rod of the boring head body 5. A fixing bolt 3 is threadedly connected to the top end of the tool holder 1, and the bottom end of the fixing bolt 3 extends into the fixing groove 2 and tightly contacts the top wall of the support block 4. A limiting component is arranged inside the tool holder 1.

[0017] The limiting assembly includes a built-in groove 7 opened at the front and rear ends of the tool holder 1, the built-in groove 7 is located at the outer periphery of the fixed groove 2, a hydraulic oil injection main pipe 71 is arranged inside the built-in groove 7, both side walls and the inner top wall inside the built-in groove 7 are provided with a support cylinder 72, a push piston 73 is arranged inside the support cylinder 72, the size of the push piston 73 matches the size inside the support cylinder 72, and the push piston 73 can move inside the support cylinder 72, one end of the push piston 73 is fixed with a limiting push rod 74, the limiting push rod 74 extends from the inner wall of the built-in groove 7 into the fixed groove 2, a return spring 75 is wound around the outside of the limiting push rod 74, the return spring 75 is placed in the support cylinder 72, one end of the return spring 75 is fixedly connected to the end of the push piston 73, the other end of the return spring 75 is fixedly connected to the front end of the support cylinder 72, and a connecting pipe 76 is arranged at the rear end of the support cylinder 72, and the connecting pipe 76 is connected to the inside of the support cylinder 72.

[0018] External holes 712 are provided on the two side walls and the top of the tool holder 1, and the external holes 712 are connected to the interior of the built-in groove 7. A threaded sleeve 713 is fixed to the interior of the external hole 712, and a push column 714 is connected to the internal thread of the threaded sleeve 713. A through plug 715 is fixed to the end of the push column 714. An oil groove 716 is provided on the top and bottom of the through plug 715, and an oil hole 717 is provided at the front end of the through plug 715. The oil hole 717 is connected to the oil groove 716. A plurality of oil injection pipes 711 are provided on the inner side wall of the hydraulic oil injection main pipe 71. The oil injection pipes 711 are connected to the interior of the hydraulic oil injection main pipe 71, and the number of the oil injection pipes 711 is the same as that of the connecting pipe 76 and corresponds one to one. The front end of the oil injection pipe 711 is connected to the connecting pipe 76, and the through plug 715 is placed at the rear end of the oil injection pipe 711.

[0019] Bottom grooves 8 are provided on both sides of the bottom of the built-in groove 7, a hydraulic oil storage tank 81 is provided at the bottom end inside the bottom groove 8, a hydraulic oil suction pump 82 is provided on the top of the hydraulic oil storage tank 81, an oil pipe 1 83 is provided at the injection port on one side of the hydraulic oil suction pump 82, one end of the oil pipe 1 83 is connected to the hydraulic oil injection main pipe 71, and an oil pipe 2 84 is provided at the extraction port on the other side of the hydraulic oil suction pump 82, and the oil pipe 2 84 is inserted from the top of the hydraulic oil storage tank 81 into the interior thereof and placed at the bottom of the hydraulic oil storage tank 81.

[0020] Working principle: When installing the boring head body 5, first put its rod into the support block 4, and pull the boring head body 5 to make the rod move flexibly in the support block 4, so as to accurately adjust the position of the head of the boring head body 5. After the position is adjusted to the right position, install the support block 4 into the fixing groove 2, and then rotate the fixing bolt 3 so that its bottom fits tightly and firmly against the top of the support block 4. At this point, the fixed installation of the boring head body 5 is completed. If it is necessary to adjust it again later, move the boring head body 5 so that its rod slides to a suitable point in the support block 4, and then rotate the adjusting bolt 6 so that its end is tightly against the side wall of the boring head body 5 rod, and the entire adjustment operation is completed; The multi-purpose deep hole boring cutter head composed of the above-mentioned multiple components has various functions. It can be directly installed with a turning tool, and can also be installed with a fine-tuning boring tool after installing specific accessories.

[0021] Among them, there is a tricky problem when installing the support block 4. If the support block 4 is small in size and cannot perfectly fit the fixed groove 2, the support block 4 will shake, which will inevitably affect the normal use of the boring head body 5. The traditional solution in the past is to place a gasket in the fixed groove 2 to fill the gap between the fixed groove 2 and the support block 4. However, the support blocks 4 are of different sizes, and the gaps between them and the fixed groove 2 are also different. This means that not only do you have to prepare multiple gaskets of different sizes, but it is also difficult to ensure that the gaskets can fill all gaps tightly. If the shape of the support block 4 is special-shaped or cylindrical, the shape of the required gasket must also be specially customized. In the production and processing links, it is difficult to find matching special-shaped or arc-shaped gaskets; To solve the above problem, first, sufficient hydraulic oil should be injected into the hydraulic oil tank 81, the oil pipe 83, and the hydraulic oil injection pipe 71. When installing the support block 4, first put the support block 4 into the fixing groove 2 steadily, and ensure that the bottom of the support block 4 is completely in contact with the inner bottom wall of the fixing groove 2; Subsequently, the hydraulic oil suction pump 82 in the bottom groove 8 is started, and the hydraulic oil suction pump 82 extracts the hydraulic oil in the hydraulic oil storage tank 81 through the oil pipe 2 84, and injects the hydraulic oil into the hydraulic oil injection pipe 71 along the oil pipe 1 83. The hydraulic oil in the hydraulic oil injection pipe 71 will flow into the oil hole 717 along the oil groove 716, and then be injected into the support cylinder 72 through the oil hole 717 and the connecting pipe 76. The hydraulic oil entering the support cylinder 72 will push the push piston 73 to move forward, and the push piston 73 will push the limit push rod 74 to slowly move into the fixed groove 2, while squeezing the return spring 75 to shrink the return spring 75. When the moving limit push rod 74 contacts the two side walls and top wall of the support block 4 in the fixed groove 2, the limit push rod 74 stops moving forward due to the resistance of these parts, and firmly presses against the two side walls and top wall of the support block 4. When the extended position of the limit push rod 74 is completely pressed against the two side walls and the top wall of the support block 4, the injection of hydraulic oil is stopped immediately. At this time, the hydraulic oil will be filled in the hydraulic oil injection main pipe 71, the connecting pipe 76 and the rear end of the support cylinder 72. Relying on the pressure of the hydraulic oil, the limit push rod 74 is always kept in the extended position when the support block 4 is fixed, and will not change. It should be noted here that the extension positions of the multiple limiting push rods 74 located on both sides and the top of the fixing groove 2 can be flexibly adjusted. No matter how the shape of the support block 4 changes, they can be accurately adapted to achieve stable limiting fixation.

[0022] In addition, since the rod of the boring head body 5 can move freely inside the support block 4, the adjusting bolt 6 is screwed into the groove on the right side of the support block 4, and then presses the side wall of the rod of the boring head body 5 to achieve fixation. In order to prevent the limiting push rod 74 located on the right side of the fixing groove 2 from entering along the groove on the right side of the support block 4 and mistakenly pressing the rod of the boring head body 5, thereby interfering with the adjustment of the boring head body 5, the corresponding limiting push rod 74 and the connecting pipe 76 at the rear end of the support cylinder 72 are blocked, and the injection of hydraulic oil is stopped at the same time. In this way, the limiting push rod 74 at the corresponding position will no longer be affected by the hydraulic oil and move at will; The specific plugging operation is also very simple, just rotate the push rod 714 in the threaded sleeve 713 at the position corresponding to the limit push rod 74, and the push rod 714 will push the plug 715 to screw it into the oil filling pipe 711. At this time, the oil groove 716 will be blocked by the inner wall of the oil filling pipe 711, and the hydraulic oil injected into the main pipe 71 will not be able to pass through the plug 715 after plugging and enter the corresponding support cylinder 72, thereby ensuring that the limit push rod 74 that does not need to work will not be driven by the hydraulic oil and move.

[0023] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A multi-purpose deep hole boring head, comprising a tool holder (1), a support block (4) and a boring head body (5), characterized in that: A fixing groove (2) is provided inside the tool holder (1), a support block (4) is provided inside the fixing groove (2), a boring head body (5) is provided inside the support block (4), an adjusting bolt (6) is threadedly connected to the side wall of the tool holder (1), one end of the adjusting bolt (6) extends into the fixing groove (2) and extends into the support block (4), and is in close contact with the side wall of the tool rod of the boring head body (5), a fixing bolt (3) is threadedly connected to the top end of the tool holder (1), a bottom end of the fixing bolt (3) extends into the fixing groove (2) and is in close contact with the top wall of the support block (4), and a limit position component is provided inside the tool holder (1).

2. The multi-purpose deep hole boring head according to claim 1, characterized in that: The limit assembly comprises a built-in groove (7) formed at the front and rear ends of the tool holder (1), the built-in groove (7) being located on the outer periphery of the fixed groove (2), a hydraulic oil injection pipe (71) being arranged inside the built-in groove (7), both side walls and the inner top wall of the built-in groove (7) being arranged with a support cylinder (72), a push piston (73) being arranged inside the support cylinder (72), the size of the push piston (73) matching the size of the inside of the support cylinder (72), and the push piston (73) being able to move inside the support cylinder (72), and one end of the push piston (73) being fixed A limit push rod (74) is provided, the limit push rod (74) extending from the inner wall of the built-in groove (7) into the fixed groove (2), a return spring (75) is wound around the outside of the limit push rod (74), the return spring (75) is placed in the support tube (72), one end of the return spring (75) is fixedly connected to the end of the push piston (73), the other end of the return spring (75) is fixedly connected to the front end inside the support tube (72), and a connecting pipe (76) is provided at the rear end of the support tube (72), and the connecting pipe (76) is connected to the inside of the support tube (72).

3. The multi-purpose deep hole boring head according to claim 2, characterized in that: The two side walls and the top of the knife seat (1) are provided with external holes (712), the external holes (712) are connected with the inside of the built-in groove (7), a threaded sleeve (713) is fixed inside the external hole (712), a push column (714) is connected to the internal thread of the threaded sleeve (713), a plug (715) is fixed at the end of the push column (714), an oil groove (716) is provided at the top and bottom of the plug (715), and a front end of the plug (715) is provided. An oil hole (717) is provided, the oil hole (717) is connected to the oil groove (716), a plurality of oil injection pipes (711) are provided on the inner wall of the hydraulic oil injection main pipe (71), the oil injection pipes (711) are connected to the inside of the hydraulic oil injection main pipe (71), and the number of the oil injection pipes (711) is the same as that of the connecting pipes (76) and corresponds one to one, the front end of the oil injection pipe (711) is connected to the connecting pipe (76), and the plug (715) is disposed at the rear end of the oil injection pipe (711).

4. The multi-purpose deep hole boring head according to claim 3, characterized in that: Bottom grooves (8) are provided on both sides of the bottom of the built-in groove (7); a hydraulic oil storage tank (81) is provided at the bottom end of the bottom groove (8); a hydraulic oil suction pump (82) is provided at the top of the hydraulic oil storage tank (81); an oil pipe (83) is provided at a liquid injection port on one side of the hydraulic oil suction pump (82); one end of the oil pipe (83) is connected to the hydraulic oil injection main pipe (71); and an oil pipe (84) is provided at the liquid extraction port on the other side of the hydraulic oil suction pump (82); the oil pipe (84) is inserted from the top of the hydraulic oil storage tank (81) into the interior thereof and is placed at the bottom end of the hydraulic oil storage tank (81).

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