High speed drill center

Abstract

This invention relates to the field of drilling and tapping center technology, and discloses a high-speed drilling and tapping center, including a machine tool, a tool magazine, a base, a spindle, a chamber disposed within the spindle, a tool changing module, a pull claw, and a cutting tool with a tapered tool holder. The spindle has multiple cavities, each containing a mounting sleeve. A steel shaft is mounted at one end of the mounting sleeve, and a square steel block is connected to the end of the steel shaft. A support shaft is rotatably connected to the square steel block, and a spherical friction element is movably mounted at the end of the support shaft. This high-speed drilling and tapping center uses the spherical friction element to fix the tapered tool holder. A sealing part controls the steel shaft to move the square steel block, thereby causing the spherical friction element to contact and apply force to the tapered tool holder under the action of the support shaft. This assists the movable pull claw in limiting the tapered tool holder, effectively preventing vibration of the tapered tool holder and avoiding any impact on the quality of the machined workpiece.

Description

Technical Field

[0001] This invention relates to the field of drilling and tapping center technology, specifically a high-speed drilling and tapping center. Background Technology

[0002] The high-speed drilling and tapping center is a modern CNC machine tool that integrates drilling, tapping, milling and other functions. It is designed to achieve high-efficiency and high-precision machining. Its core features are the use of ultra-high speed spindle, rapid traverse axis and intelligent control system to achieve rapid and precise machining of materials such as aluminum alloy, copper alloy and stainless steel. The high-speed drilling and tapping center eliminates micro vibration through ultra-high speed electric spindle, ensures thread accuracy through rigid tapping, and achieves seamless process connection through second-level tool change. With the help of intelligent temperature control and vibration suppression technology, it finally achieves efficient and precise integrated "drilling-tapping-milling" machining on lightweight materials such as aluminum alloy and copper alloy.

[0003] During machine tool processing, high-speed drilling and tapping centers can achieve rapid tool changes. Specifically, the CNC program executes instructions to pre-select the target tool. The spindle automatically returns to the tool change point, typically the Z-axis zero point Z0. During this process, the idle tool change position in the tool magazine contacts the tool. A hydraulically driven pull rod releases the jaws from their restraints on the tool, and the spindle rises. During this process, the tool magazine resets the tool and rotates the pre-selected target tool to the corresponding position at the tool change point. The spindle then descends, and the tool magazine carries the target tool into the spindle. The spindle uses the jaws to restrain the target tool, but... As usage time increases, the pulley inevitably experiences wear due to long-term mechanical fatigue. For example, the pulley is subjected to repeated compression by the disc spring during each tool change, which causes fatigue cracks in the metal after long-term operation. Furthermore, prolonged direct contact with the tapered surface of the tool holder can easily lead to scratches due to metal-to-metal friction, thus reducing contact accuracy and decreasing the pulley's clamping strength over the tool. During high-speed spindle rotation, worn pulleys can cause vibration within the spindle tapered hole, affecting the machining quality of the workpiece. Therefore, we propose a high-speed drilling and tapping center. Summary of the Invention

[0004] The purpose of this invention is to provide a high-speed drilling and tapping center to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-speed drilling and tapping center, comprising a machine tool, a tool magazine, a base, a spindle, a chamber disposed within the spindle, a tool changing module, a pull claw, and a cutting tool with a tapered tool holder, wherein the tapered tool holder of the cutting tool is placed within the pull claw, and multiple movable claw flaps on the pull claw contact and fix the tapered tool holder thereto.

[0006] The spindle has multiple cavities arranged in a ring at equal angles. Each cavity contains a fixed mounting sleeve, and one end of the mounting sleeve is fitted with a steel shaft that is slidably connected to it. The end of the steel shaft is threadedly connected to a square steel block. Support shafts are mounted on the top and bottom of the square steel block and are rotatably connected to it. A torsion spring mechanism connects the support shaft and the square steel block. A spherical friction element is movably mounted on the end of the support shaft. The mounting sleeve contains an oil drive module, which moves the steel shaft so that the support shaft on the square steel block drives the spherical friction element to contact the tapered tool holder. This also assists the multiple movable claws on the pull claw in fixing the tapered tool holder.

[0007] Preferably, the hydraulic drive module includes an oil reservoir sleeve fixedly installed inside the mounting sleeve and storing hydraulic oil, a cylinder first located on one side of the oil reservoir sleeve and fixedly installed inside the mounting sleeve, and an electric three-way valve provided between the oil reservoir sleeve and the cylinder first. The feed end of the cylinder first and the discharge end of the oil reservoir sleeve are respectively connected to two ports of the electric three-way valve. A sealing part first is provided inside the cylinder first, and a spring first is connected between the sealing part first and the inner wall of the cylinder first. One end of the steel shaft is fixedly connected to the sealing part first.

[0008] Preferably, a sealing panel is installed inside the oil storage sleeve, and multiple oil filter holes are opened on the sealing panel. An electromagnetic drive mechanism is also installed at one end of the oil storage sleeve. The output end of the electromagnetic drive mechanism is located inside the oil storage sleeve and is fixedly connected to one side of the sealing panel. A transition sleeve is also installed on the sealing panel and rotatably connected to it. Multiple closed rods with silicone sleeves are fixedly installed on the transition sleeve. During the rotation of the transition sleeve, the oil filter holes are located on the movement trajectory of the closed rods, and the silicone sleeves seal the oil filter holes. A torsion spring mechanism is also connected between the transition sleeve and the sealing panel.

[0009] Preferably, a fixed sleeve is also fixedly installed inside the oil storage sleeve, and multiple limiting grooves are provided inside the fixed sleeve. A drive shaft is fixedly installed on the adapter sleeve, and the drive shaft is located inside the fixed sleeve. Multiple sliding shafts corresponding to the limiting grooves are installed at the ends of the drive shafts. The ends of the sliding shafts can slide within the limiting grooves. Each limiting groove includes a straight area, an arc area, and a limiting area.

[0010] Preferably, the main shaft has multiple cavities, and an embedded sleeve is fixedly installed in each cavity. A cylinder is fixedly installed inside the embedded sleeve, and the feed end of the cylinder is connected to the other port of the electric three-way valve through a hose. A sealing part is provided inside the cylinder, and a spring is connected between the sealing part and the inner wall of the cylinder.

[0011] Preferably, a limiting shaft is also fixedly installed on the sealing part two, and the end of the limiting shaft passes through the cylinder two and extends to the outside, and the limiting shaft is slidably connected to the end of the cylinder two. A plurality of insertion sleeves corresponding one-to-one with the limiting shaft are also fixedly installed on the tapered tool holder, and an annular groove is opened inside the insertion sleeve.

[0012] Preferably, an annular sleeve is provided on one side of the limiting shaft, the insert sleeve is located on the movement trajectory of the annular sleeve, and an action shaft is fixedly installed at the end of the limiting shaft. The action shaft is located inside the annular sleeve and is slidably connected to it. An annular panel is fixedly installed on the outer wall of the action shaft, and an annular cavity is opened inside the annular sleeve, with the annular panel located inside the annular cavity.

[0013] Preferably, the annular sleeve has multiple iron shafts that are slidably connected to its inner wall, and a plastic spring is connected between the iron shafts and the inner wall of the annular sleeve. The actuating shaft has a force-bearing shaft installed inside, and a spring mechanism is connected between the force-bearing shaft and the inner wall of the actuating shaft.

[0014] Preferably, the end of the force-bearing shaft passes through the end of the action shaft and the end of the annular sleeve in sequence and extends to the outside. A plurality of magnetic blocks corresponding one-to-one with the iron shaft are also fixedly installed on the force-bearing shaft. The iron shaft is located on the movement trajectory of the magnetic blocks, and the magnetic blocks generate a repulsive force on the iron shaft.

[0015] Preferably, the diameters of cylinder barrel one and cylinder barrel two are both smaller than the diameter of the oil reservoir sleeve.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. This invention utilizes a spherical friction element to fix a conical tool holder. When wear on the movable claw flap reduces the fixing strength of the conical tool holder, the sealing panel inside the oil reservoir sleeve uses oil as the driving force. This causes the sealing part to control the steel shaft to move the square steel block. Under the action of the supporting shaft, the spherical friction element contacts the conical tool holder and applies force to assist the movable claw flap in limiting the conical tool holder. This effectively prevents the conical tool holder from vibrating and avoids affecting the quality of the machined workpiece.

[0018] 2. This invention uses a limiting shaft to drive the actuating shaft into the insert sleeve, and under the action of the magnetic block on the force-bearing shaft, the iron shaft enters the annular groove. By utilizing the cooperation between the iron shaft and the annular groove, the iron shaft limits the insert sleeve, thereby limiting the conical tool holder. Furthermore, through the cooperation of the spherical friction element and the iron shaft, the movable claw can assist in temporarily fixing the conical tool holder. During the machining process, it effectively avoids tool vibration and improves the machining quality of the workpiece. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the base structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the internal structure of the base of the present invention;

[0022] Figure 4 This is a schematic diagram showing the separation of the spindle and tool structure of the present invention;

[0023] Figure 5 This is a schematic diagram of a partial internal structure of the spindle of the present invention;

[0024] Figure 6 This is a schematic diagram of the pull claw structure of the present invention;

[0025] Figure 7 This is a schematic diagram of the oil drive module and embedded sleeve structure of the present invention;

[0026] Figure 8 This is a schematic diagram of the square steel block and supporting shaft structure of the present invention;

[0027] Figure 9 This is a schematic diagram of the structure of the oil storage sleeve and cylinder of the present invention;

[0028] Figure 10 This is a schematic diagram of the sealing panel structure of the present invention;

[0029] Figure 11 This is a schematic diagram showing the positional relationship between the sealing panel, adapter sleeve, drive shaft, and fixed sleeve of the present invention.

[0030] Figure 12 This is a schematic diagram showing the separation of the adapter sleeve and drive shaft from the fixed sleeve structure of the present invention;

[0031] Figure 13 This is a schematic diagram of the internal structure of cylinder barrel two of the present invention;

[0032] Figure 14 For the present invention Figure 13 Enlarged schematic diagram of the structure of region A in the middle;

[0033] Figure 15 This is a schematic diagram of the fixing structure of the spherical friction element and the iron shaft to the tapered tool holder of the present invention.

[0034] In the diagram: 1. Machine tool; 2. Tool magazine; 3. Base; 4. Spindle; 41. Chamber; 42. Hollow cavity; 43. Body; 5. Tool changer module; 6. Puller claw; 61. Movable claw flap; 7. Tool; 71. Tapered tool holder; 72. Insertion sleeve; 721. Annular groove; 8. Mounting sleeve; 81. Steel shaft; 82. Square steel block; 83. Support shaft; 84. Torsion spring mechanism one; 85. Spherical friction element; 9. Hydraulic drive module; 91. Oil reservoir sleeve; 911. Fixed sleeve; 912. Limiting groove; 913. Straight travel area; 914. Arc-shaped area; 915. Limiting area; 92. Cylinder one; 93. Electric three-way valve ; 94. Sealing part one; 95. Spring one; 96. Sealing panel; 961. Oil filter hole; 97. Electromagnetic drive mechanism; 98. Adapter sleeve; 981. Drive shaft; 982. Sliding shaft; 99. Enclosed rod frame; 991. Silicone sleeve; 90. Torsion spring mechanism two; 10. Embedded sleeve; 11. Cylinder two; 111. Sealing part two; 112. Spring two; 113. Limiting shaft; 114. Annular sleeve; 115. Actuating shaft; 116. Annular panel; 117. Annular cavity; 118. Iron shaft; 119. Plastic spring; 12. Hose; 13. Force-bearing shaft; 131. Magnetic block; 14. Spring mechanism. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figure 1-15 This invention provides a technical solution: a high-speed drilling and tapping center, combined with an attached... Figure 1 Appendix Figure 2 Appendix Figure 3 and appendix Figure 4 As shown, the system includes a machine tool 1, a tool magazine 2 mounted on the machine tool 1, a base 3 mounted on the machine tool 1 and capable of sliding at its upper limit on the machine tool 1, a spindle 4 fixedly mounted inside the base 3, a chamber 41 located within the spindle 4, a tool changing module 5, a pull claw 6, and cutting tools 7 with tapered tool holders 71. The tool magazine 2 is equipped with multiple cutting tools 7 of different specifications. The tapered tool holders 71 of the cutting tools 7 are placed within the pull claw 6. The pull claw 6 includes multiple movable jaw flaps 61, which contact and fix the tapered tool holders 71. Further explanation is provided in conjunction with the attached diagram. Figure 4As shown, chamber 41 mainly includes a trapezoidal cross-section chamber 41 and an annular cross-section chamber 41. When the movable claw flap 61 is located in the trapezoidal cross-section chamber 41, the movable claw flap 61 will open under the action of the spring on the pull claw 6 (the spring is a component of the pull claw 6 itself), so that the tool 7 is in a released state. When the movable claw flap 61 is located in the annular cross-section chamber 41, the multiple movable claw flaps 61 of the pull claw 6 will limit the conical handle 71 of the tool 7, thereby achieving the purpose of fixing the tool 7. Since the above components are all prior art components, the present invention has not described them in detail; combined with the appendix Figure 5 and attached Figure 6 As shown, multiple cavities 42 are formed inside the main shaft 4, each cavity 42 corresponding to the gap between the movable claw flaps 61. The multiple cavities 42 are distributed in a ring at equal angles inside the main shaft 4. An installation sleeve 8 is fixedly installed inside each cavity 42, and a steel shaft 81 is slidably connected to one end of the installation sleeve 8. A square steel block 82 is threadedly connected to the end of the steel shaft 81. A support shaft 83 is rotatably connected to the top and bottom of the square steel block 82. A torsion spring mechanism 84 is connected between the support shaft 83 and the square steel block 82, and a spherical friction element 85 is movably installed at the end of the support shaft 83. During the directional movement, the friction element 85 will contact the tapered handle 71 of the tool 7. The surface of the spherical friction element 85 has a flat plane, which is the contact point with the tapered handle 71. A torsion spring (not shown in the figure) is also provided between the spherical friction element 85 and the support shaft 83. An oil drive module 9 is provided inside the mounting sleeve 8. The oil drive module 9 is used to move the position of the steel shaft 81, so that the support shaft 83 on the square steel block 82 drives the spherical friction element 85 to contact the tapered handle 71 of the tool 7, thereby assisting the multiple movable claws 61 on the pull claw 6 to fix the tapered handle 71.

[0037] If the movable claw 61 of the pull claw 6 wears down, the fixing strength of the tapered tool holder 71 will decrease. During the high-speed rotation of the spindle 4, the tool 7 will vibrate. Therefore, this invention uses a spherical friction element 85 to assist multiple movable claw 61s in fixing the tapered tool holder 71. To effectively improve the fixing strength of the tool 7, this invention also incorporates the following design: the spherical friction element 85 provides secondary fixing of the tapered tool holder 71, preventing the tool 7 from shaking during the high-speed rotation of the spindle 4. The specific design is as follows:

[0038] Combined with appendix Figure 4 Appendix Figure 5 Appendix Figure 13 Appendix Figure 14 and attached Figure 15As shown, the main shaft 4 has multiple cavities 43, each cavity 43 has an embedded sleeve 10 fixedly installed, and a cylinder 11 is fixedly installed inside the embedded sleeve 10. A sealing part 111 is provided inside the cylinder 11, and a spring 112 is connected between the sealing part 111 and the inner wall of the cylinder 11. A limiting shaft 113 is fixedly installed on the sealing part 111, and the end of the limiting shaft 113 passes through the cylinder 11 and extends to the outside. The limiting shaft 113 is slidably connected to the end of the cylinder 11. An actuating shaft 115 is fixedly installed at the end of the limiting shaft 113, and an annular sleeve 114 is provided on one side of the limiting shaft 113. The actuating shaft 115 is located inside the annular sleeve 114 and is slidably connected to it. An annular panel 116 is fixedly installed on the outer wall of the actuating shaft 115, and an annular cavity 117 is provided inside the annular sleeve 114. The annular panel 116 is located inside the annular sleeve 114. Inside the annular cavity 117, the present invention further includes a plurality of insertion sleeves 72, each corresponding to a limiting shaft 113, fixedly installed on the conical tool holder 71. Each insertion sleeve 72 has an annular groove 721 inside. Inside the annular sleeve 114, a plurality of iron shafts 118 are slidably connected to their inner walls, and a plastic spring 119 connects the iron shafts 118 to the inner wall of the annular sleeve 114. A force-bearing shaft 115 is slidably connected to it. A shaft 13 is provided, and a spring mechanism 14 is connected between the inner wall of the force-bearing shaft 13 and the inner wall of the action shaft 115. The end of the force-bearing shaft 13 passes through the end of the action shaft 115 and the end of the annular sleeve 114 and extends to the outside. A plurality of magnetic blocks 131 corresponding one-to-one with the iron shaft 118 are also fixedly installed on the force-bearing shaft 13. The iron shaft 118 is located on the movement trajectory of the magnetic blocks 131, and the magnetic blocks 131 generate a repulsive force on the iron shaft 118.

[0039] As a further limitation of this invention, the oil-driven module 9 includes an oil storage sleeve 91 fixedly installed inside the mounting sleeve 8 and storing oil, and a cylinder 92 located on one side of the oil storage sleeve 91 and fixedly installed inside the mounting sleeve 8. Further, the diameters of both cylinder 92 and cylinder 92 are smaller than the diameter of the oil storage sleeve 91, and an electric three-way valve 93 is provided between the oil storage sleeve 91 and cylinder 92. The inlet end of cylinder 92 and the outlet end of the oil storage sleeve 91 are respectively connected to two ports of the electric three-way valve 93, and the inlet end of cylinder 92 is connected to the electric three-way valve 93. The other port of the three-way valve 93 is connected by a hose 12, and a sealing part 94 is provided inside the cylinder 92. A spring 95 is connected between the sealing part 94 and the inner wall of the cylinder 92. One end of the steel shaft 81 is fixedly connected to the sealing part 94. A sealing panel 96 is installed inside the oil storage sleeve 91, and multiple oil filter holes 961 are opened on the sealing panel 96. An electromagnetic actuation mechanism 97 is also installed at one end of the oil storage sleeve 91. The output end of the electromagnetic actuation mechanism 97 is located inside the oil storage sleeve 91 and is fixedly connected to one side of the sealing panel 96.

[0040] A transition sleeve 98 is also installed on the sealing panel 96 and rotatably connected thereto. Multiple sealing rods 99, each fitted with a silicone sleeve 991, are fixedly installed on the transition sleeve 98. During rotation of the transition sleeve 98, the oil filter hole 961 is located on the movement trajectory of the sealing rod 99, and the silicone sleeve 991 seals the oil filter hole 961. A torsion spring mechanism 90 is also connected between the transition sleeve 98 and the sealing panel 96. A fixing sleeve 911 is also fixedly installed inside the oil storage sleeve 91. Multiple limiting grooves 912 are provided inside the fixed sleeve 911, and a drive shaft 981 is fixedly installed on the adapter sleeve 98. The drive shaft 981 is located inside the fixed sleeve 911. Multiple sliding shafts 982 corresponding to the limiting grooves 912 are installed at the ends of the drive shaft 981. The ends of the sliding shafts 982 can slide within the limiting grooves 912. Each limiting groove 912 includes a straight area 913, an arc-shaped area 914, and a limiting area 915.

[0041] It should be noted that, under normal circumstances, when the movable claw 61 is not worn, the spherical friction element 85 and the annular sleeve 114 are located in the cavity 42 and cavity 43, respectively. When the movable claw 61 is worn, the tool 7 vibrates during operation. The sensing element on the machine tool 1 that monitors the vibration of the tool 7 controls the movement of the hydraulic drive module 9 to fix the tapered tool holder 71 and prevent the tool 7 from vibrating. Further, since the sensing element that monitors the vibration of the tool 7 is an existing component on the machine tool 1, this invention does not describe it in detail. When the movable claw 61 is not worn, the spindle 4... During high-speed rotation, the oil in the oil reservoir sleeve 91, cylinder 1 92, and cylinder 2 11 is in a state of mutual circulation. The oil in the oil reservoir sleeve 91 is not completely filled, which makes the oil in the oil reservoir sleeve 91, cylinder 1 92, and cylinder 2 11 flowable during the rotation of the main shaft 4. The oil flows freely through the oil filter hole 961, which can automatically balance the pressure gradient caused by centrifugal force and avoid local vacuum or high pressure areas. When the pull claw 6 wears, the oil filter hole 961 is sealed by the action of the silicone sleeve 991, so that the sealing panel 96 can drive the sealing part 1 94 and sealing part 2 111 to move through the oil.

[0042] Specifically, in practical applications, if one or more movable claw flaps 61 on the pull claw 6 are worn and fail, the tool 7 may vibrate during the rotation of the spindle 4. This can trigger the activation of the electromagnetic drive mechanism 97, whose output drives the sealing panel 96. During this movement, the sealing panel 96 drives the drive shaft 981 within the fixed sleeve 911 via the adapter sleeve 98. During this movement, the sliding shaft 982 at the end of the drive shaft 981 enters the arc-shaped area 914 along the trajectory of the straight area 913. As the sealing panel 96 moves, the sliding shaft 982 at the end of the drive shaft 981 eventually enters the limiting area 915. During this process, the drive shaft 981 adjusts its angle within the fixed sleeve 911, thereby causing the sealing rod 99 to block the oil filter hole 961 under the action of the adapter sleeve 98. At this time, the torsion spring mechanism 90 is in a deformed state. Subsequently, as the sealing panel 96 continues to move, the oil will enter the cylinder 11 connected to cylinder 1 92 and hose 12 through the electric three-way valve 93, causing the sealing part 1 94 and sealing part 2 111 to move in a directional manner. During the movement, the sealing part 1 94 will compress the spring 1 95, causing the steel shaft 81 to move towards the tapered tool holder 71 of the tool 7. The square steel block 82 will drive the supporting shaft 83 and the spherical friction element 85 to move synchronously. When the square steel block 82 moves a distance greater than the conical tool holder 71, the support shaft 83 will adjust the angle of the square steel block 82, thereby changing the position of the spherical friction element 85 on the conical tool holder 71. During this process, the spherical friction element 85 will roll at the end of the support shaft 83 until the area of ​​the spherical friction element with a flat surface contacts the surface of the conical tool holder 71, at which point the square steel block 82 stops moving, and the spherical friction element is used to temporarily limit the conical tool holder 71.

[0043] Combined with appendix Figure 13 Appendix Figure 14 and attached Figure 15 As shown, when the sealing part 2 111 moves inside the cylinder 2 11, the sealing part 2 111 will cause the actuating shaft 115 to drive the annular sleeve 114 into the insertion sleeve 72 on the conical tool holder 71 via the limiting shaft 113. Since the actuating shaft 115 is located inside the annular sleeve 114 and is slidably connected to it, when the actuating shaft 115 moves, it will use friction to make the annular sleeve 114 move synchronously with it, combined with the attached... Figure 13As shown, during this process, the annular panel 116 on the outer wall of the actuating shaft 115 will be located on one side of the annular cavity 117 inside the annular sleeve 114 (the side closer to the limiting shaft 113). When the annular sleeve 114 enters the insertion sleeve 72, the actuating shaft 115 continues to move under the action of the inner wall of the insertion sleeve 72, while the annular sleeve 114 is fixed by the action of the inner wall of the insertion sleeve 72. Then, the annular panel 116 on the actuating shaft 115 will move to the other side of the annular cavity 117 inside the annular sleeve 114. At the same time, the force-bearing shaft 13 will also be forced into the annular sleeve 114 by the force of the inner wall of the insertion sleeve 72. It should be noted that when the annular sleeve 114 enters the insertion sleeve 72 and contacts the inner wall of the insertion sleeve 72, the iron shaft 118 corresponds to the annular groove 721 on the insertion sleeve 72. Then, when the force-bearing shaft 13 is forced into the annular sleeve 114 by the inner wall of the insertion sleeve 72, the magnetic block 131 on the force-bearing shaft 13 will move to the bottom of the iron shaft 118 to generate a repulsive force on the iron shaft 118, thereby causing the iron shaft 118 to enter the annular groove 721. That is, the plastic spring 119 is in a compressed state. The iron shaft 118 limits the insertion sleeve 72 to achieve the purpose of limiting the tapered tool holder 71.

[0044] When it is necessary to release this fixation, the electromagnetic drive mechanism 97 drives the sealing panel 96 to reset. At this time, under the action of the adapter sleeve 98, the drive shaft 981 moves within the fixed sleeve 911. During the movement, the sliding shaft 982 at the end of the drive shaft 981 enters the arc-shaped area 914 along the limit area 915 and finally returns to the initial position of the straight area 913. During this process, the drive shaft 981 drives the adapter sleeve 98 to rotate in the opposite direction, that is, to reset. The silicone sleeve 991 on the sealing rod 99 no longer closes to the oil filter hole 9. 61 is blocked, and then under the action of spring 95 and spring 112, the steel shaft 81 and the limiting shaft 113 drive the connected parts to perform a reset movement. The steel shaft 81 drives the supporting shaft 83 to perform a reset movement through the square steel block 82, so that the ball-shaped friction element 85 at the end of the supporting shaft 83 leaves the surface of the tapered tool holder 71, and the supporting shaft 83 is reset under the action of torsion spring mechanism 84, while the ball-shaped friction element 85 will be reset under the action of the torsion spring (not shown in the figure), thereby releasing the restriction on the tapered tool holder 71;

[0045] The limiting shaft 113 drives the actuating shaft 115 to move in a direction away from the interior of the sleeve 72. At this time, the annular panel 116 on the actuating shaft 115 moves towards the annular cavity 117 inside the annular sleeve 114 (the side closer to the limiting shaft 113). The end of the force-bearing shaft 13 moves synchronously with it, and under the action of the spring mechanism 14, the force-bearing shaft 13 performs a reset movement, and the magnetic block 131 on it moves synchronously with it. When the annular panel 116 on the actuating shaft 115 and the annular cavity 117 move towards the annular cavity 72, the force-bearing shaft 115 moves towards the annular cavity 117 inside the annular sleeve 72. When the 17th side (the side closest to the limiting shaft 113) contacts, the force-bearing shaft 13 is completely reset, the magnetic block 131 is no longer located below the iron shaft 118, and the iron shaft 118 is no longer subjected to repulsive force. Under the action of the plastic spring 119, it is reset, the iron shaft 118 leaves the annular groove 721 and returns to the inside of the annular sleeve 114, thereby releasing the restriction on the insertion sleeve 72. The annular sleeve 114 moves with the action shaft 115 to reset, thereby releasing the restriction on the tapered tool holder 71.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0047] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-speed drilling and tapping center, characterized in that, The machine tool includes a machine tool (1), a tool magazine (2), a base (3), a spindle (4), a chamber (41) located in the spindle (4), a tool changing module (5), a pull claw (6), and a cutting tool (7) with a tapered tool holder (71). The tapered tool holder (71) of the cutting tool (7) is placed in the pull claw (6), and multiple movable claws (61) on the pull claw (6) contact and fix the tapered tool holder (71). Multiple cavities (42) are provided inside the main shaft (4), and the multiple cavities (42) are distributed in a ring at equal angles inside the main shaft (4). Each cavity (42) is fixedly installed with an installation sleeve (8), and a steel shaft (81) is slidably connected to one end of the installation sleeve (8). A square steel block (82) is threadedly connected to the end of the steel shaft (81). A support shaft (83) is rotatably connected to the top and bottom of the square steel block (82). The support shaft (83) and the square steel block (82) are connected to each other. A torsion spring mechanism (84) is connected between the two parts, and a ball-shaped friction element (85) is movably installed at the end of the support shaft (83). An oil drive module (9) is provided inside the mounting sleeve (8). The oil drive module (9) is used to move the steel shaft (81) so that the support shaft (83) on the square steel block (82) drives the ball-shaped friction element (85) to contact the tapered tool holder (71) of the tool (7), and assists the multiple movable claws (61) on the pull claw (6) to fix the tapered tool holder (71). The oil-driven module (9) includes an oil storage sleeve (91) fixedly installed inside the mounting sleeve (8) and storing oil, a cylinder (92) located on one side of the oil storage sleeve (91) and fixedly installed inside the mounting sleeve (8), and an electric three-way valve (93) is provided between the oil storage sleeve (91) and the cylinder (92). The feed end of the cylinder (92) and the discharge end of the oil storage sleeve (91) are respectively connected to two ports of the electric three-way valve (93). A sealing part (94) is provided inside the cylinder (92). A spring (95) is connected between the sealing part (94) and the inner wall of the cylinder (92). One end of the steel shaft (81) is fixedly connected to the sealing part (94). A sealing panel (96) is installed inside the oil storage sleeve (91). The sealing panel (96) has multiple oil filter holes (961), and an electromagnetic drive mechanism (97) is installed at one end of the oil storage sleeve (91). The output end of the electromagnetic drive mechanism (97) is located inside the oil storage sleeve (91) and is fixedly connected to one side of the sealing panel (96). The sealing panel (96) is also equipped with a transition sleeve (98) that is rotatably connected to it. Multiple closed rods (99) with silicone sleeves (991) are fixedly installed on the transition sleeve (98). During the rotation of the transition sleeve (98), the oil filter hole (961) is located on the movement trajectory of the closed rod (99), and the silicone sleeve (991) can block the oil filter hole (961). A torsion spring mechanism (90) is also connected between the transition sleeve (98) and the sealing panel (96). The oil storage sleeve (91) is also fixedly installed inside the fixed sleeve (911), and multiple limiting grooves (912) are provided inside the fixed sleeve (911). The adapter sleeve (98) is fixedly installed with a drive shaft (981), and the drive shaft (981) is located inside the fixed sleeve (911). Multiple sliding shafts (982) corresponding to the limiting grooves (912) are installed at the end of the drive shaft (981). The end of the sliding shaft (982) can slide within the limiting groove (912). Each limiting groove (912) includes a straight area (913), an arc area (914), and a limiting area (915).

2. The high-speed drilling and tapping center according to claim 1, characterized in that: The main shaft (4) has multiple cavities (43) and an embedded sleeve (10) is fixedly installed in each cavity (43). A cylinder (11) is fixedly installed inside the embedded sleeve (10). The feed end of the cylinder (11) is connected to the other port of the electric three-way valve (93) through a hose (12). A sealing part (111) is provided inside the cylinder (11). A spring (112) is connected between the sealing part (111) and the inner wall of the cylinder (11).

3. A high-speed drilling and tapping center according to claim 2, characterized in that: A limiting shaft (113) is also fixedly installed on the sealing part 2 (111), and the end of the limiting shaft (113) passes through the cylinder 2 (11) and extends to the outside. The limiting shaft (113) is slidably connected to the end of the cylinder 2 (11). A plurality of insertion sleeves (72) corresponding to the limiting shaft (113) are also fixedly installed on the tapered tool holder (71). An annular groove (721) is opened inside the insertion sleeve (72).

4. A high-speed drilling and tapping center according to claim 3, characterized in that: An annular sleeve (114) is provided on one side of the limiting shaft (113). The insert sleeve (72) is located on the movement trajectory of the annular sleeve (114). An action shaft (115) is fixedly installed at the end of the limiting shaft (113). The action shaft (115) is located inside the annular sleeve (114) and is slidably connected to it. An annular panel (116) is fixedly installed on the outer wall of the action shaft (115). An annular cavity (117) is opened inside the annular sleeve (114), and the annular panel (116) is located inside the annular cavity (117).

5. A high-speed drilling and tapping center according to claim 4, characterized in that: The annular sleeve (114) has multiple iron shafts (118) that are slidably connected to its inner wall, and a plastic spring (119) is connected between the iron shafts (118) and the inner wall of the annular sleeve (114). The actuating shaft (115) has a force-bearing shaft (13) installed inside, and a spring mechanism (14) is connected between the force-bearing shaft (13) and the inner wall of the actuating shaft (115).

6. A high-speed drilling and tapping center according to claim 5, characterized in that: The end of the force-bearing shaft (13) passes through the end of the action shaft (115) and the annular sleeve (114) and extends to the outside. Multiple magnetic blocks (131) corresponding one-to-one with the iron shaft (118) are also fixedly installed on the force-bearing shaft (13). The iron shaft (118) is located on the movement trajectory of the magnetic blocks (131), and the magnetic blocks (131) generate a repulsive force on the iron shaft (118).

7. A high-speed drilling and tapping center according to claim 1, characterized in that: The diameters of cylinder barrel 1 (92) and cylinder barrel 2 (11) are both smaller than the diameter of oil reservoir sleeve (91).

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