A drilling device for a cutting tool shaft

Abstract

This invention discloses a drilling device for a cutting tool shaft, belonging to the field of drilling technology. It includes a tilting frame and a drilling mechanism. Through the tilting function of the frame, the device achieves stable support and precise positioning of the shaft during machining, eliminating the need for secondary positioning, simplifying the operation process, and improving positioning accuracy. Simultaneously, the independent design of the positioning line and the shaft diameter enhances the applicability and flexibility of the device, easily handling the machining needs of shafts of different specifications and sizes. Compared to traditional methods, this invention employs a mechanized positioning and drilling process, significantly shortening the machining cycle, reducing manual labor intensity, and significantly improving machining quality.

Description

Technical Field

[0001] This invention relates to the field of drilling technology, and more specifically to a drilling device for a cutting tool shaft. Background Technology

[0002] In modern machining, precise drilling of pipes, especially angled holes, is a crucial step in improving product performance and meeting complex assembly requirements. Traditional drilling methods often rely on manual measurement and positioning, which is not only inefficient but also makes it difficult to guarantee drilling accuracy and consistency. Furthermore, drilling complex-shaped workpieces such as shafts presents even greater challenges to machining technology due to the structural limitations and positioning difficulties inherent in the workpiece itself.

[0003] To overcome these challenges and improve drilling accuracy and efficiency, this invention proposes a drilling device for a cutting tool shaft. Summary of the Invention

[0004] To address the aforementioned technical shortcomings, the purpose of this invention is to provide a drilling device for a cutting tool shaft, which has the function of precise positioning during inclined hole drilling.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention provides a drilling device for a cutting tool shaft, including a bracket, on which the following are mounted:

[0006] A tilting frame is rotatably mounted inside a bracket. The tilting frame is equipped with a positioning plate for fixing the shaft and a clamping device for fixing the shaft.

[0007] A drilling mechanism, comprising a drill bit rotatable on a support, wherein during rotation, the extension point of the drill bit always passes through a certain point;

[0008] The positioning plate has an arc surface. When the shaft is installed on the positioning plate, the outer surface of the shaft is attached to the arc surface and a connecting line is formed at the contact position. The flipping axis of the flipping frame coincides with the connecting line, and the connecting line passes through the positioning point.

[0009] Preferably, both ends of the flipping frame are provided with drive disks, the drive disks are rotatably mounted on both sides of the bracket, and fixed blocks are installed on both drive disks. The two ends of the positioning plate are respectively installed on the two fixed blocks.

[0010] Preferably, each of the two fixing blocks is provided with a sliding groove, and a symmetrically arranged positioning shaft is connected to the sliding groove at both ends, and the positioning shaft can slide inside the sliding groove.

[0011] Preferably, a side plate is connected between the two fixing blocks, and a positioning block is slidably installed on the side plate. When the shaft is installed on the positioning plate, one end of the shaft can abut against the positioning block.

[0012] Preferably, the clamping device includes a pressure column slidably mounted on the side plate, the pressure column being slidably mounted on the side plate, and the sliding direction of the pressure column being perpendicular to the sliding direction of the positioning block.

[0013] Preferably, a positioning hole is provided in the middle of the positioning plate, and the positioning point is set in the positioning hole.

[0014] Preferably, the bracket includes a rear baffle and two side baffles. The side baffles are equipped with a drive device for rotating the drive disk. This drive device can be a motor. The output shaft of the motor is fixed with a first gear. The outer wall of the drive disk is provided with teeth that mesh with the first gear. When the motor drives the first gear to rotate, the first gear will drive the drive disk to rotate.

[0015] Preferably, a second gear is rotatably mounted inside the rear baffle, the second gear is connected to the drilling mechanism via a fixing bracket, and a third gear that meshes with the second gear is rotatably mounted inside the rear baffle.

[0016] Preferably, two toothed rods are slidably mounted inside the fixing block via springs, and the two toothed rods are respectively connected to two positioning shafts, with a fourth gear meshing between the two toothed rods.

[0017] The beneficial effects of this invention are as follows:

[0018] The flipping function of the tilting frame ensures that the positioning plate faces upwards during initial positioning, providing stable support and a foundation for precise alignment of the shaft components. Crucially, when the tilting frame rotates 180 degrees around an axis that perfectly coincides with the positioning line, the originally set positioning point remains unchanged, completely eliminating the need for secondary positioning. This feature not only simplifies the operation process but also greatly improves positioning accuracy.

[0019] Furthermore, another major highlight of this design is the independence of the positioning line from the shaft diameter. This means that regardless of changes in the shaft diameter, as long as the fit between the positioning plate and the positioning shaft remains precise, the position of the positioning line will not shift, thus ensuring the applicability of the positioning. This feature allows the device to easily handle the machining needs of shafts of different specifications and sizes.

[0020] Compared to traditional drilling methods, this invention achieves a leap from multiple manual measurements and adjustments to automated, precise control through mechanized positioning and drilling processes. This transformation not only significantly shortens the processing cycle and reduces manual labor intensity, but also effectively reduces errors and mistakes caused by human factors, thus significantly improving processing quality. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the structure of the flipping frame after it has been reversed according to the present invention.

[0023] Figure 3 This is an internal cross-sectional view of the flipping frame after it has been reversed in this invention.

[0024] Figure 4 This is a partial sectional view from the side of the present invention.

[0025] Figure 5 For the present invention Figure 4 A in the enlarged view.

[0026] Figure 6 This is a partial connection diagram of the side plate, positioning block, and pressure column of the present invention.

[0027] Figure 7 This is an internal cross-sectional view of the fixing block of the present invention.

[0028] Figure 8 This is an internal cross-sectional view of the side baffle of the bracket of the present invention.

[0029] Figure 9 This is a schematic diagram of the structure of the rear baffle of the bracket of the present invention.

[0030] In the diagram: 1. Bracket, 2. Tilting frame, 3. Positioning plate, 301. Positioning hole, 4. Drilling mechanism, 5. Drive disc, 6. Fixing block, 601. Slide groove, 7. Positioning shaft, 8. Side plate, 9. Positioning block, 10. Pressure column, 11. First gear, 12. Second gear, 13. Third gear, 14. Gear rack, 15. Fourth gear, 16. Spring. Detailed Implementation

[0031] The present invention is illustrated below with specific embodiments, but these are not intended to limit the invention.

[0032] Example 1

[0033] like Figure 1-Figure 5 As shown in this embodiment, a drilling device for a cutting tool shaft is provided, including a bracket 1, on which a flipping frame 2 and a drilling mechanism 4 are mounted.

[0034] The tilting frame 2 is rotatably mounted inside the support frame 1. The support frame 1 has a drilling chamber inside, within which the tilting frame 2 is rotatably mounted. An opening is provided on one side of the drilling chamber, serving as the designated position for installation and operation by the operator. This design allows the operator to easily access the drilling area and perform related tasks. A positioning plate 3 is installed on the tilting frame 2 to secure the shaft, allowing the tilting frame 2 to drive the shaft to complete a full 180-degree tilt. This design ensures that the shaft can flexibly and stably change position during the tilting process. A clamping device is also installed on the tilting frame 2 to firmly fix the shaft to the tilting frame 2, ensuring that the shaft remains stable and does not slip or fall during the tilting action.

[0035] The drilling mechanism 4 includes a drill bit that can rotate on the support 1. During the rotation of the drill bit, the extension point of the drill bit always passes through a certain point. Figure 2 Point a in the diagram ensures that, throughout the entire rotation of the drill bit, its extended line (i.e., the virtual straight line the drill bit points to) always passes through a fixed positioning point. This design allows the drill bit to adjust its angle with the shaft as needed through simple rotation, providing flexibility for drilling angled holes in pipes. When drilling an angled hole, the operator can first position the shaft in the drilling mechanism 4, and then precisely control the angle between the drill bit and the shaft by rotating the drill bit and utilizing the characteristic that the drill bit's extended line passes through the positioning point. This adjustment method is not only fast but also accurate, ensuring that the angled hole can be precisely drilled in the predetermined direction and angle.

[0036] The positioning plate 3 has an arc surface. When the shaft is installed on the positioning plate 3, the outer surface of the shaft adheres to the arc surface, forming a connecting line at the contact point. In this drilling mechanism 4, the arc surface design on the positioning plate 3 is particularly crucial, as its radius is larger than that of the shaft to ensure that the shaft can achieve tangential contact with the arc surface when installed on the positioning plate 3. This tangential state not only ensures that the shaft can be firmly attached to the arc surface but also avoids unnecessary gaps or misalignments. As the shaft adheres to the arc surface, its outer surface forms a continuous connecting line. This connecting line closely fits the outer surface of the shaft, and the rotation axis of the tilting frame 2 coincides with the connecting line. The rotation axis of the tilting frame 2 is designed to be on the extension line of this connecting line and coincide with it. This means that when the tilting frame 2 rotates, its rotation center will always remain at the positioning point traversed by the extension line of the drill bit. This design simplifies the process of adjusting the angle between the drill bit and the shaft, allowing the operator to easily control the direction of the drill bit to achieve the goal of accurately drilling inclined holes in the pipe. The connecting line passes through the positioning point, and no matter how the drill bit rotates, the extension line of the drill bit always passes through the positioning point. However, this positioning point is set on the connecting line, and this connecting line is set on the outer surface of the shaft. Therefore, when it is necessary to adjust the position of the inclined hole on the shaft, it is only necessary to adjust the position of the pipe on the positioning plate 3 to find the initial point of the inclined hole drilled on the pipe, without the need for manual measurement.

[0037] Example 2

[0038] like Figures 1-6 As shown, based on Embodiment 1, this embodiment provides a flipping method for the flipping frame 2, as detailed below:

[0039] Both ends of the tilting frame 2 are equipped with drive discs 5, which are rotatably mounted on both sides of the bracket 1. Inside the bracket 1, the drive discs 5 can rotate freely. The rotation axis of the drive disc 5 is precisely set so that it fits against an arc surface on the outer surface of the shaft, forming a fixed connecting line at this fit. This connecting line is crucial because it ensures that it remains constant regardless of how the tilting mechanism rotates and adjusts its position. Furthermore, the extension line of the drill bit always crosses this connecting line, and the intersection point falls precisely on a preset positioning point. Each of the two drive discs 5 is equipped with a fixing block 6, and both ends of the positioning plate 3 are respectively mounted on the two fixing blocks 6. The positioning plate 3, as a key intermediary structure, connects the fixing blocks 6 at both ends to the drive discs 5. Its design ensures that when one drive disc 5 is driven to rotate, the other drive disc 5 can be effectively driven to rotate synchronously through a linkage mechanism. In this way, the positioning plate 3 not only stabilizes the overall structure but also enables the coordinated work between the drive discs 5.

[0040] Both sides of the fixing block 6 are provided with sliding grooves 601, and symmetrically arranged positioning shafts 7 are connected to the sliding grooves 601 at both ends. The positioning shafts 7 can slide inside the sliding grooves 601. During the installation of the shaft, the shaft itself will exert a thrust on both sides, causing the two symmetrically arranged positioning shafts 7 to move outward simultaneously and in a coordinated manner. This synchronous and consistent movement mechanism effectively realizes the positioning function of the shaft, ensuring that the shaft can accurately and tightly fit the corresponding arc surface on the positioning plate 3, thereby achieving a more suitable installation effect.

[0041] Inside the fixed block 6, two racks 14 are slidably mounted via springs 16. Each rack 14 is connected to one of the two positioning shafts 7, and a fourth gear 15 meshes between them. Both racks 14 are engaged with the same fourth gear 15. This configuration ensures that when the fourth gear 15 rotates, the two racks 14 work together to slide synchronously outwards. Simultaneously, each rack 14 is subjected to the force of the springs 16, giving it a potential energy to move inwards; that is, in the absence of external force, they tend to return to their central position. Furthermore, to maintain the synchronicity of the movement of the two racks 14, the positioning shafts 7 connected to them are designed to be symmetrically arranged.

[0042] A side plate 8 connects the two fixed blocks 6. A positioning block 9 is slidably mounted on the side plate 8. When the shaft is installed on the positioning plate 3, one end of the shaft can abut against the positioning block 9. During the installation of the shaft, the positioning block 9 functions to slide and position along the axis, thus positioning the end of the shaft. To achieve the sliding function of the positioning block 9, a drive device is specially installed on the side plate 8. This device can be a cylinder that is firmly fixed to the side plate 8, and its design cleverly connects the output shaft of the cylinder to the positioning block 9. When the cylinder is activated, its output shaft can smoothly push the positioning block 9 to move linearly on the side plate 8, thereby achieving flexible adjustment and precise positioning of the shaft.

[0043] The clamping device includes a pressure column 10 slidably mounted on the side plate 8. The sliding direction of the pressure column 10 is perpendicular to the sliding direction of the positioning block 9. Before the shaft is installed, the pressure column 10 first slides along a predetermined trajectory away from the positioning plate 3. This action is designed to leave enough space for the smooth installation of the shaft. Subsequently, when the shaft begins to be installed and initially contacts the positioning shaft 7, the pressure column 10 continues its downward sliding action. During this process, the pressure column 10 not only provides a pushing force for the shaft to move closer to the positioning shaft 7, but also pushes the positioning shafts 7 on both sides outward. This design ensures that the shaft can be stably supported and accurately positioned during installation, while the positioning shafts 7 on both sides also apply the necessary positioning force to the shaft simultaneously. A cylinder for driving the pressure column 10 to slide is fixed on the side plate 8. The pressure column 10 is rotatably mounted on a support plate, which is slidably mounted inside the side plate 8. The output end of the cylinder is connected to the support plate.

[0044] Example 3

[0045] like Figures 1-9 As shown, based on Embodiment 1 and Embodiment 2, this embodiment provides the internal structure of the support 1, as detailed below:

[0046] A positioning hole 301 is provided in the middle of the positioning plate 3. The positioning point is set in the positioning hole 301. After the shaft is installed, the flipping frame 2 will drive the positioning plate 3 to rotate 180 degrees, so that the positioning hole 301 faces the drill bit. The diameter of the positioning hole 301 is larger than the diameter of the drill bit, so that the drill bit can pass through the positioning hole 301 after the rotation angle.

[0047] The bracket 1 includes a rear baffle and two side baffles. The side baffles are equipped with a drive device for rotating the drive disk 5. This drive device can be a motor. The output shaft of the motor is fixed with a first gear 11. The outer wall of the drive disk 5 is provided with teeth that mesh with the first gear 11. When the motor drives the first gear 11 to rotate, the first gear 11 will drive the drive disk 5 to rotate.

[0048] The rear baffle has a second gear 12 rotatably mounted inside. The second gear 12 is connected to the drilling mechanism 4 through a fixing frame. The rear baffle also has a third gear 13 rotatably mounted inside, meshing with the second gear 12. A motor for driving the third gear 13 to rotate is mounted on the fixing frame. The number of teeth of the third gear 13 is less than the number of teeth of the second gear 12.

[0049] Working principle:

[0050] During installation, the pressure column 10 is first operated to slide away from the positioning plate 3, creating necessary space for the installation of the shaft. Then, the shaft is precisely placed on the positioning plate 3, and the pressure column 10 applies downward pressure to secure it firmly. With the pressure column 10 pressed down, it indirectly exerts an outward thrust on the positioning shafts 7 on both sides through the shaft. This thrust, under the action of the positioning shafts 7, ensures the precise positioning of the shaft on the positioning plate 3.

[0051] Once the shaft is accurately fixed, its outer surface will adhere tightly to the specific arc surface on the positioning plate 3, forming a clear connection line at the contact point. It is worth noting that this connection line coincides precisely with the rotation axis of the tilting frame 2, which means that any rotational movement of the tilting frame 2 will revolve around this axis.

[0052] Subsequently, as the tilting frame 2 rotates in the predetermined direction, the drill bit mounted on the tilting frame 2 moves accordingly and precisely aligns with the target position on the shaft. Finally, the drill bit drills the required angled hole in the shaft, completing the entire machining process.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate and not limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the present invention without departing from the spirit and scope of the present invention. Any modifications or partial substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A drilling device for a cutting tool shaft, comprising a support (1), characterized in that, The bracket (1) is equipped with: A flipping frame (2) is rotatably mounted inside a bracket (1). A positioning plate (3) for fixing shafts is mounted on the flipping frame (2). A clamping device for fixing shafts is also mounted on the flipping frame (2). The drilling mechanism (4) includes a drill bit that can rotate on the support (1), wherein the extension point of the drill bit always passes through a certain point during the rotation process; The positioning plate (3) has an arc surface. When the shaft is installed on the positioning plate (3), the outer surface of the shaft is attached to the arc surface and a connecting line is formed at the contact position. The flipping axis of the flipping frame (2) coincides with the connecting line, and the connecting line passes through the positioning point.

2. The drilling device for a cutting tool shaft according to claim 1, characterized in that, The flipping frame (2) is provided with drive disks (5) at both ends. The drive disks (5) are rotatably mounted on both sides of the bracket (1). Fixing blocks (6) are installed on both drive disks (5). The two ends of the positioning plate (3) are respectively mounted on the two fixing blocks (6).

3. The drilling device for a cutting tool shaft according to claim 2, characterized in that, Both sides of the fixed block (6) are provided with a sliding groove (601), and the two end sliding grooves (601) are connected with symmetrically arranged positioning shafts (7), which can slide inside the sliding groove (601).

4. The drilling device for a cutting tool shaft according to claim 3, characterized in that, A side plate (8) is connected between the two fixed blocks (6), and a positioning block (9) is slidably installed on the side plate (8). When the shaft is installed on the positioning plate (3), one end of the shaft can abut against the positioning block (9).

5. A drilling device for a cutting tool shaft according to claim 4, characterized in that, The clamping device includes a pressure column (10) that is slidably mounted on the side plate (8). The pressure column (10) is slidably mounted on the side plate (8), and the sliding direction of the pressure column (10) is perpendicular to the sliding direction of the positioning block (9).

6. The drilling device for a cutting tool shaft according to claim 1, characterized in that, A positioning hole (301) is provided in the middle of the positioning plate (3), and the positioning point is set in the positioning hole (301).

7. The drilling device for a cutting tool shaft according to claim 1, characterized in that, The bracket (1) includes a rear baffle and two side baffles, and a drive device for driving the drive disc (5) to rotate is installed inside the side baffle.

8. A drilling device for a cutting tool shaft according to claim 7, characterized in that, The rear baffle is rotatably mounted with a second gear (12), which is connected to the drilling mechanism (4) via a fixing frame. The rear baffle is also rotatably mounted with a third gear (13) that meshes with the second gear (12).

9. A drilling device for a cutting tool shaft according to claim 3, characterized in that, The fixed block (6) has two toothed rods (14) slidably mounted inside by springs (16). The two toothed rods (14) are respectively connected to two positioning shafts (7), and a fourth gear (15) meshes between the two toothed rods (14).

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