A gear drilling tool for vertical machining center

Abstract

The present application relates to the technical field of gear drilling tooling, and in particular to a gear drilling tooling for a vertical machining center, comprising: a mounting plate having a plurality of positioning holes on the mounting plate; three mounting shafts, the mounting shafts being arranged perpendicular to the mounting plate, the mounting shafts being detachably and fixedly connected with clamping gears, the plurality of clamping gears forming a placement cavity for placing gears to be processed; a driving unit for driving the mounting shafts to move synchronously, the driving unit being connected to the mounting plate, and the driving unit being connected to the mounting shafts, and being used to drive the mounting shafts to approach or move away from the gears to be processed; the present application has the function of enabling meshing with the gears to be processed through the clamping gears, and being able to adapt to different types of gears to be processed by quickly replacing different types of clamping gears, thereby improving the adaptability of the gear drilling tooling to drilling of different types of gears, and the driving unit can drive the mounting shafts to move so as to enable the clamping gears to mesh with the gears to be processed.

Description

Technical Field

[0001] The present application relates to the technical field of gear drilling tools, and in particular to a gear drilling tool for a vertical machining center. Background Art

[0002] A vertical machining center is a high-efficiency, high-precision CNC machine tool, mainly used for processing various metal materials, such as milling, drilling, tapping, etc. Compared with traditional horizontal machining centers, the spindle of a vertical machining center is perpendicular to the work surface, so it is easier to remove chips and it is convenient for operators to observe and debug the machining process. In addition, vertical machining centers also have the advantages of small footprint and compact structure, and are widely used in mold manufacturing, automotive parts processing and other fields.

[0003] When drilling holes in gears through a vertical machining center, it is necessary to use a fixture to fix the semi-finished workpiece whose tooth shape has been processed. The prior art discloses a coolant circulation chip collection type cylinder clamping tooth protection gear drilling fixture, which includes a base box, a positioning ring fixedly connected to the base box, and a support leg. The base box is a hollow cylindrical structure, with a chip drop hole and a fixture support on the top, a chip collection net inside, and a conical bottom plate at the bottom; a cylinder clamping device and a fixing bolt are provided on the positioning ring; a clamp head is installed on the cylinder clamping device, a clamp head and a fixing nut group are installed on the fixing bolt, and a positioning tooth group that can be meshed and fixed with the positioned gear is provided on the clamp head.

[0004] With regard to the above-mentioned related technologies, the semi-finished workpiece with processed tooth shape is placed in the placement cavity formed by four positioning tooth groups, and then the positioning tooth group is driven close to the semi-finished workpiece by the cylinder clamping device, and the positioning tooth group is engaged with the tooth shape on the semi-finished workpiece to achieve fixation. When the specifications of the gear to be drilled change, its parameters such as tooth pitch and tooth height will change, which results in the positioning teeth on the positioning tooth group being unable to engage with the tooth shape of the gear to be processed, making the drilling tooling less adaptable to drilling processing of different types of gears. Summary of the invention

[0005] In order to improve the adaptability of a gear drilling tool to drilling holes in gears of different models, the present application provides a gear drilling tool for a vertical machining center.

[0006] The present application provides a gear drilling tool for a vertical machining center using the following technical solution:

[0007] A gear drilling tool for a vertical machining center, comprising:

[0008] A mounting plate, wherein the mounting plate has a plurality of positioning holes;

[0009] Three mounting shafts, the mounting shafts are arranged perpendicular to the mounting plate, the mounting shafts are detachably and fixedly connected with clamping gears, and a plurality of the clamping gears form a placement cavity for placing the gears to be processed;

[0010] A driving unit for driving the installation shaft to move synchronously, the driving unit is connected to the installation plate, and the driving unit is connected to the installation shaft, and is used to drive the installation shaft to approach or move away from the gear to be processed.

[0011] By adopting the above technical solution, bolts are passed through the positioning holes to fix the mounting plate on the machine table of the vertical machining center, and then a clamping gear sleeve that matches the tooth shape of the gear to be processed is connected to the mounting shaft. When the tooth shape of the gear to be processed changes, a suitable clamping gear can be selected for replacement. Since the clamping gears are all standard parts, clamping gears of different models can be easily obtained. At this time, a placement cavity for placing the gear to be processed is formed between the three clamping gears on the three mounting shafts, and then the gear to be processed is placed in the placement cavity, and force is applied to the mounting shaft through the driving unit, so that the three mounting shafts are synchronously approached to the gear to be processed, and the movement of the mounting shaft drives the clamping gear to move until the engaging gear The wheel meshes with the gear to be processed. At this time, the three clamping gears are evenly distributed on the circumference of the gear to be processed. Then the vertical machining center is operated to perform centering and drilling. The gear drilling tooling designed for the vertical machining center is convenient for connection with the placement table of the vertical machining center through the mounting plate. The mounting shaft can be used as the mounting basis for the clamping gear and provide a certain mounting height for the clamping gear. The clamping gear can be used to mesh with the gear to be processed. Different types of clamping gears can be quickly replaced to adapt to different types of gears to be processed, thereby improving the adaptability of the gear drilling tooling to drilling holes of different types of gears. The driving unit can drive the mounting shaft to move so that the clamping gear is meshed with the gear to be processed.

[0012] In a specific implementation scheme, the driving unit includes:

[0013] A disk body connected to the mounting disk;

[0014] A transmission bevel gear, the transmission bevel gear is coaxially rotatably connected with the disk body, and a plane thread is provided on the top wall of the transmission bevel gear;

[0015] A driving bevel gear, the driving bevel gear is rotatably connected to the disc body and meshes with the transmission bevel gear;

[0016] Three moving blocks are evenly distributed on the circumference, the bottom wall of the moving block has a thread adapted to the plane thread, the disk body is provided with a sliding groove for the moving block to slide, the moving block slides in the sliding groove, and the mounting shaft is connected to the moving block.

[0017] By adopting the above technical solution, the designed driving unit can facilitate the installation of the transmission bevel gear and the driving bevel gear through the disk body, and provide clearance and guidance for the movement of the moving block. The transmission bevel gear can be rotated by the driving bevel gear, and the rotation of the transmission bevel gear can make the three moving blocks synchronously approach or move away from the gear to be processed.

[0018] In a specific possible implementation manner, the installation shaft is rotationally connected to the moving block, and a damping member is connected to the moving block, and the damping member is connected to the installation shaft for applying rotational resistance to the installation shaft.

[0019] By adopting the above technical solution, after the clamping gear is meshed with the gear to be processed, the rotational resistance applied by the damping member to the mounting shaft is changed, and then during drilling, under the premise that the drill speed on the vertical machining center remains unchanged, the gear to be processed can be rotated under the action of the torque applied by the drill when drilling, thereby reducing the possibility of deformation and failure of the tooth shape of the gear to be processed due to large stress between the clamping gear and the gear to be processed during the drilling process, and effectively ensuring the product quality of the gear to be processed. Before drilling, the vertical machining center can be used to apply torque to the gear to be processed to observe whether the gear to be processed rotates, so as to determine whether the vertical machining center acts on the center point of the gear to be processed, that is, to determine whether the centering position is correct. Moreover, through this structure, when drilling a hole on the toothed disk of the gear to be processed, since the torque center applied to the gear to be processed by the drilling shaft on the vertical machining center and the rotation axis of the gear to be processed itself do not coincide, the gear to be processed will not rotate when drilling a hole on the processing toothed disk.

[0020] In a specific implementation scheme, three fixed vertical rods are evenly connected to the circumference of the installation plate, and the fixed vertical rods are connected to transverse support rods. The installation shaft passes through and is slidably connected to the transverse support rods.

[0021] By adopting the above technical solution, the designed fixed vertical rod and transverse support rod can provide lateral support for the side of the installation shaft away from the moving block, reducing the possibility of bending of the installation shaft due to lateral force during drilling.

[0022] In a specific embodiment, the lateral support rod comprises:

[0023] A fixed section connected to the fixed upright pole;

[0024] The sliding section is slidably connected to the fixed section, and the sliding section is provided with a strip groove for the installation shaft to pass through.

[0025] By adopting the above technical solution, the designed transverse support rod can improve the adaptability to different types of gears to be processed and clamping gears through the fixed section and the sliding section.

[0026] In a specific possible implementation manner, the top walls of the plurality of sliding segments are arranged coplanarly to form a supporting platform for supporting the gear to be processed.

[0027] By adopting the above technical solution, the sliding section designed to form the support platform can provide vertical support for the gear to be processed, reduce the pressure required to radially press the gear to be processed along the installation shaft, and further reduce the possibility of deformation of the installation shaft.

[0028] In a specific possible implementation scheme, an adjusting bolt is rotatably connected to the fixed upright pole, and the adjusting bolt extends into the inner cavity of the fixed section and is threadedly connected to the sliding section.

[0029] By adopting the above technical solution and designing the adjusting bolt, the relative position adjustment of the sliding section and the fixed section can be achieved, and then when used with different models of gears to be processed and clamping gears, the sliding section can be guaranteed to exceed the clamping gear to the greatest extent possible to form a supporting platform.

[0030] In a specific possible implementation manner, the installation shaft is provided with an installation step, and a fixing nut is threadedly connected to the installation shaft, and the fixing nut causes the bottom wall of the clamping gear to abut against the installation step.

[0031] By adopting the above technical solution, the mounting shaft and the fixing nut with the mounting step are designed, so that the mounting shaft and the clamping gear can be quickly assembled and disassembled.

[0032] In summary, the present application includes at least one of the following beneficial technical effects:

[0033] 1. The gear drilling tool designed for the vertical machining center can be easily connected to the placement table of the vertical machining center through the mounting plate. The mounting shaft can be used as the mounting base of the clamping gear and provide a certain mounting height for the clamping gear. The clamping gear can be meshed with the gear to be processed, and different types of clamping gears can be quickly replaced to adapt to different types of gears to be processed, thereby improving the adaptability of the gear drilling tool to drilling different types of gears. The driving unit can drive the mounting shaft to move so that the clamping gear can be meshed with the gear to be processed.

[0034] 2. The gear drilling tool designed for the vertical machining center can change the rotational resistance applied by the damping member to the mounting shaft after the clamping gear is meshed with the gear to be processed, so that during the drilling process, under the premise that the drill speed on the vertical machining center remains unchanged, the gear to be processed can be rotated under the action of the torque applied by the drill when drilling, thereby reducing the possibility of deformation and failure of the tooth shape of the gear to be processed due to large stress between the clamping gear and the gear to be processed during the drilling process, and can effectively ensure the product quality of the gear to be processed. Before drilling, the vertical machining center can apply torque to the gear to be processed to observe whether the gear to be processed rotates, so as to judge whether the vertical machining center acts on the center point of the gear to be processed, that is, to judge whether the centering position is correct. Moreover, through this structure, when drilling a hole on the toothed disk of the gear to be processed, since the torque center applied by the drilling shaft on the vertical machining center to the gear to be processed and the rotation axis of the gear to be processed itself do not coincide, the gear to be processed will not rotate when drilling on the processing toothed disk.

[0035] 3. The gear drilling tool designed for the vertical machining center can provide vertical support for the gear to be processed by forming a sliding section of the support platform, reduce the pressure required for the installation shaft to press the gear to be processed along the radial direction of the gear to be processed, and further reduce the possibility of deformation of the installation shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the structure of a gear drilling tool for a vertical machining center according to an embodiment of the present application.

[0037] Figure 2 is Figure 1 Schematic diagram of the structure after adding a fixing nut to the foundation.

[0038] Figure 3 yes Figure 2 A cross-sectional view showing the internal structure of the drive unit.

[0039] Figure 4 is Figure 2 Schematic diagram of the structure after adding damping parts to the foundation.

[0040] Figure 5 is Figure 4 Schematic diagram of the structure after adding fixed vertical poles and transverse support poles to the foundation.

[0041] Figure 6 is Figure 5 On this basis, a three-dimensional structural schematic diagram of the specific structure of the transverse support rod is further disclosed.

[0042] Explanation of the accompanying drawings: 1. Mounting plate; 2. Mounting shaft; 3. Clamping gear; 4. Driving unit; 41. Plate body; 42. Transmission bevel gear; 43. Driving bevel gear; 44. Moving block; 5. Damping member; 6. Fixed vertical pole; 7. Transverse support rod; 71. Fixed section; 72. Sliding section; 8. Adjusting bolt; 9. Fixing nut. DETAILED DESCRIPTION

[0043] The following is combined with Figure 1-6 This application is described in further detail.

[0044] The embodiment of the present application discloses a gear drilling tool for a vertical machining center.

[0045] Reference Figure 1 A gear drilling tool for a vertical machining center includes a mounting plate 1, a mounting shaft 2 and a clamping gear 3. A plurality of positioning holes are opened on the mounting plate 1. The mounting plate 1 is fixed to the placement table of the vertical machining center by passing bolts through the positioning holes, and at this time, the plane where the top wall of the mounting plate 1 is located is horizontally arranged. In the present application, the mounting plate 1 can be rectangular, circular, or other shapes. In the present embodiment, the mounting plate 1 is circular; the number of mounting shafts 2 is three, the mounting shafts 2 are arranged perpendicular to the mounting plate 1, and the three mounting shafts 2 are distributed circumferentially around the central axis of the mounting plate 1 and are on the same pitch circle, the number of clamping gears 3 is consistent with the number of mounting shafts 2, the clamping gears 3 are detachably fixedly connected to the mounting shaft 2, and the three clamping gears 3 form a placement cavity for placing the gear to be processed.

[0046] Reference Figure 2 In order to realize the rapid assembly and disassembly of the mounting shaft 2 and the clamping gear 3, the mounting shaft 2 is provided with an mounting step, and a fixing nut 9 is threadedly connected to the mounting shaft 2. After the fixing nut 9 is rotated, the bottom wall of the clamping gear 3 can be pressed and fixed on the mounting step; the mounting shaft 2 can be used as the mounting base of the clamping gear 3, and a certain mounting height can be provided for the clamping gear 3. The clamping gear 3 can be meshed with the gear to be processed, and different types of clamping gears 3 can be quickly replaced to adapt to different types of gears to be processed, thereby improving the adaptability of the gear drilling tooling to drilling holes of different types of gears.

[0047] Reference Figure 2 and Figure 3In order to achieve adaptability to different types of gears to be processed, the gear drilling tool for the vertical machining center also includes a driving unit 4, which is connected to the mounting disk 1 and connected to the mounting shaft 2, and is used to drive the mounting shaft 2 to synchronously approach or move away from the central axis of the mounting disk 1; the driving unit 4 applies force to the mounting shaft 2, so that the three mounting shafts 2 synchronously approach the gear to be processed, and the movement of the mounting shaft 2 drives the clamping gear 3 to move until the clamping gear is meshed with the gear to be processed. At this time, the three clamping gears 3 are evenly distributed on the circumference of the gear to be processed.

[0048] Reference Figure 2 and Figure 3 The driving unit 4 includes a disk body 41, a transmission bevel gear 42, a driving bevel gear 43 and three moving blocks 44. The disk body 41 is connected to the mounting disk 1 by countersunk bolts, and the disk body 41 is coaxially arranged with the mounting disk 1. The transmission bevel gear 42 is coaxially rotatably connected to the inside of the disk body 41, and the top wall of the transmission bevel gear 42 has a flat thread. The driving bevel gear 43 is rotatably connected to the disk body 41, and the driving bevel gear 43 is meshed with the thread on the bottom wall of the transmission bevel gear 42. The transmission bevel gear 42 can be driven to rotate by rotating the driving bevel gear 43.

[0049] Reference Figure 2 and Figure 3 The three moving blocks 44 are evenly distributed along the circumference of the central axis of the mounting disk 1, and the bottom wall of the moving block 44 has a thread that matches the plane thread on the transmission bevel gear 42. The disk body 41 is provided with three sliding grooves for the moving block 44 to slide. The moving block 44 slides in the sliding groove, and the mounting shaft 2 is connected to the moving block 44. The driving bevel gear 43 drives the transmission bevel gear 42 to rotate. The transmission bevel gear 42 makes the three moving blocks 44 approach or move away from the central axis of the mounting disk 1 synchronously through the plane thread, thereby driving the mounting shaft 2 to approach or move away from the central axis of the mounting disk 1 synchronously; the disk body 41 is convenient for installing the transmission bevel gear 42 and the driving bevel gear 43, and provides clearance and guidance for the movement of the moving block 44. The driving bevel gear 43 can make the transmission bevel gear 42 rotate, and the three moving blocks 44 can be synchronously approached or moved away from the gear to be processed through the rotation of the transmission bevel gear 42.

[0050] Reference Figure 4The mounting shaft 2 is rotationally connected to the moving block 44, and the moving block 44 is connected to a damping member 5, which is connected to the mounting shaft 2 and is used to apply rotational resistance to the mounting shaft 2. In the present application, the damping member 5 can be a friction resistance device, such as a friction plate or a brake plate, which realizes rotational resistance adjustment by adjusting the radial contact pressure. It can also be a magnetic resistance system, in which an electromagnet is arranged on the mounting shaft 2, similar to the principle of a stepping motor. It can also be a liquid damper, in which a part of the mounting shaft 2 is immersed in liquid, and rotational resistance control is realized by changing the liquid pressure or liquid viscosity. It can also be other structures that can apply rotational resistance to the mounting shaft 2. In the present embodiment, the damping member 5 is configured as a friction resistance device.

[0051] Reference Figure 4 After the clamping gear 3 is meshed with the gear to be processed, the rotational resistance applied by the damping member 5 to the mounting shaft 2 is changed, and then during the drilling process, under the premise that the drill speed on the vertical machining center remains unchanged, the gear to be processed can be rotated under the torque applied by the drill when drilling, thereby reducing the possibility of deformation and failure of the tooth shape of the gear to be processed due to large stress between the clamping gear 3 and the gear to be processed during the drilling process, and can effectively ensure the product quality of the gear to be processed. In addition, through this structure, the gear to be processed can be processed on the toothed disk of the gear to be processed. When drilling, since the torque center applied to the gear to be processed by the drilling shaft on the vertical machining center and the rotation axis of the gear to be processed itself do not coincide with each other, the gear to be processed will not rotate when drilling on the processing toothed disc; further, a sensor is connected to the mounting shaft 2, and the sensor can be a torque sensor or a speed sensor, which is used to measure the real-time torque or real-time speed of the mounting shaft 2, and then before drilling, torque is applied to the gear to be processed by the vertical machining center to observe whether the gear to be processed rotates or observe the reading of the torque sensor or the speed sensor on the mounting shaft 2, so as to determine whether the vertical machining center acts on the center point of the gear to be processed and quickly determine whether the centering position is correct.

[0052] Reference Figure 5 In order to provide lateral support for the side of the installation shaft 2 away from the moving block 44 and reduce the possibility of bending of the installation shaft 2 due to lateral force during the drilling process, three fixed vertical rods 6 are welded and fixed on the installation disk 1. The three fixed vertical rods 6 are evenly distributed around the circumference of the central axis of the installation disk 1. The fixed vertical rods 6 are connected to the transverse support rods 7. The installation shaft 2 passes through the transverse support rods 7, and the installation shaft 2 is slidably connected to the transverse support rods 7.

[0053] Reference Figure 6Furthermore, the transverse support rod 7 includes a fixed section 71 and a sliding section 72. The fixed section 71 is welded and fixed to the fixed vertical rod 6. The sliding section 72 is slidably connected to the fixed section 71. A strip groove for the installation shaft 2 to pass through is opened on the sliding section 72. The strip groove is opened on the sliding section 72 along the radial direction of the installation disk 1. The fixed section 71 and the sliding section 72 can improve the adaptability to different models of gears to be processed and the clamping gear 3.

[0054] Reference Figure 6 An adjusting bolt 8 is rotatably connected to the fixed upright 6, and the screw section of the adjusting bolt 8 passes through the through hole and extends into the inner cavity of the fixed section 71, and the adjusting bolt 8 is threadedly connected to the sliding section 72. By screwing the adjusting bolt 8, the relative position of the sliding section 72 and the fixed section 71 can be adjusted, and then when used with different models of gears to be processed and clamping gears 3, it can be ensured that the sliding section 72 exceeds the clamping gear 3 to the greatest extent possible to form a supporting platform.

[0055] Reference Figure 6 In order to provide vertical support for the gear to be processed, reduce the pressure required for the installation shaft 2 to press the gear to be processed along the radial direction of the gear to be processed, and further reduce the possibility of deformation of the installation shaft 2, the top walls of multiple sliding sections 72 are coplanarly arranged to form a supporting platform for supporting the bottom wall of the gear to be processed.

[0056] The implementation principle of a gear drilling tool for a vertical machining center in the embodiment of the present application is as follows: bolts are passed through the positioning holes to fix the mounting plate 1 on the machine table of the vertical machining center, and then a clamping gear 3 that matches the tooth shape of the gear to be processed is sleeved and connected to the mounting shaft 2. When the tooth shape of the gear to be processed changes, a suitable clamping gear 3 can be selected for replacement. Since the clamping gears 3 are all standard parts, clamping gears 3 of different models can be easily obtained. At this time, a placement cavity for placing the gear to be processed is surrounded by the three clamping gears 3 on the three mounting shafts 2, and then the gear to be processed is placed in the placement cavity, and the gear to be processed is driven The driving unit 4 applies force to the installation shaft 2, so that the three installation shafts 2 are synchronously approached to the gear to be processed. When the installation shaft 2 moves, the clamping gear 3 is driven to move until the clamping gear is meshed with the gear to be processed. At this time, the three clamping gears 3 are evenly distributed on the circumference of the gear to be processed. Then the vertical machining center is operated to perform centering and drilling. In addition, during the drilling process, according to the aperture size of the center hole of the gear to be processed, the damping member 5 can be controlled to apply different sizes of rotational resistance to the installation shaft 2, so that the rotation speed of the gear to be processed changes during drilling, and the possibility of deformation of the tooth shape of the gear to be processed due to the torque generated during drilling can be reduced.

[0057] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A gear drilling tool for a vertical machining center, characterized in that: include: A mounting plate (1), wherein the mounting plate (1) has a plurality of positioning holes; Three installation shafts (2), the installation shafts (2) are arranged perpendicular to the installation plate (1), a clamping gear (3) is detachably fixedly connected to the installation shaft (2), and a plurality of the clamping gears (3) form a placement cavity for placing the gear to be processed; A driving unit (4) for driving the installation shaft (2) to move synchronously, the driving unit (4) being connected to the installation plate (1) and the driving unit (4) being connected to the installation shaft (2) and being used to drive the installation shaft (2) to move closer to or farther from the gear to be processed; The driving unit (4) comprises: A disk body (41), the disk body (41) being connected to the mounting disk (1); A transmission bevel gear (42), the transmission bevel gear (42) is coaxially rotatably connected to the disk body (41), and a top wall of the transmission bevel gear (42) is provided with a planar thread; A driving bevel gear (43), wherein the driving bevel gear (43) is rotatably connected to the disk body (41), and the driving bevel gear (43) is meshed with the transmission bevel gear (42); Three moving blocks (44) are evenly distributed around the circumference, the bottom wall of each moving block (44) has a thread matched with the plane thread, the disk body (41) is provided with a sliding groove for the moving block (44) to slide, the moving block (44) slides in the sliding groove, and the mounting shaft (2) is connected to the moving block (44); The installation shaft (2) is rotationally connected to the moving block (44), and a damping member (5) is connected to the moving block (44). The damping member (5) is connected to the installation shaft (2) and is used to apply rotational resistance to the installation shaft (2).

2. The gear drilling tool for a vertical machining center according to claim 1, characterized in that: Three fixed vertical rods (6) are evenly connected to the circumference of the installation plate (1), and the fixed vertical rods (6) are connected to transverse support rods (7). The installation shaft (2) passes through and is slidably connected to the transverse support rods (7).

3. The gear drilling tool for a vertical machining center according to claim 2, characterized in that: The transverse support rod (7) comprises: A fixed section (71), the fixed section (71) being connected to the fixed upright pole (6); A sliding section (72), the sliding section (72) is slidably connected to the fixed section (71), and the sliding section (72) is provided with a strip groove for allowing the installation shaft (2) to pass through.

4. The gear drilling tool for a vertical machining center according to claim 3, characterized in that: The top walls of the plurality of sliding sections (72) are coplanarly arranged to form a supporting platform for supporting the gear to be processed.

5. The gear drilling tool for a vertical machining center according to claim 4, characterized in that: An adjusting bolt (8) is rotatably connected to the fixed upright pole (6), and the adjusting bolt (8) extends into the inner cavity of the fixed section (71) and is threadedly connected to the sliding section (72).

6. The gear drilling tool for a vertical machining center according to claim 1, characterized in that: The installation shaft (2) is provided with an installation step, and a fixing nut (9) is threadedly connected to the installation shaft (2), and the fixing nut (9) causes the bottom wall of the clamping gear (3) to abut against the installation step.

Images