Internal gear drilling tooling and its drilling method

Abstract

The present invention relates to an internal gear drilling tooling and a drilling method thereof. Drilling is achieved by using the internal gear drilling tooling and a drilling machine. The internal gear drilling tooling includes a drill die positioning device, two profiling devices, a sliding platform, and two lower die devices. Each of the lower die devices is installed on the sliding platform, each of the profiling devices is installed on the sliding platform, and each of the profiling devices cooperates with the corresponding lower die device to clamp the internal gear. The drilling method includes the following steps: S1: Use the drill die positioning device to position the hole positions of the profiling devices; S2: Place the internal gear on the lower die device under the drilling machine and clamp it with the profiling device; S3: Start the drilling machine to drill the internal gear; S4: The sliding platform moves to remove the machined internal gear; S5: Place the next internal gear to be machined on the lower die device under the drilling machine; S6: Repeat S2 to S5. During the drilling process, the processing speed is fast and the position of the processed hole is accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of drilling tooling, and in particular to an internal gear drilling tooling and a drilling method thereof. Background Art

[0002] A gear is a toothed mechanical part that can mesh with each other, and its application in mechanical transmission and the entire mechanical field is extremely extensive. In order to reduce the weight of the gear and facilitate the handling and use of the gear during use, multiple holes are usually drilled in the gear during gear processing. Existing drilling machines have a slow drilling speed, and there is a lack of a mechanism for quickly positioning empty holes during drilling. Summary of the Invention

[0003] To overcome the technical defects existing in the prior art, the present invention provides an internal gear drilling tooling and a drilling method thereof, which have a fast processing speed and accurate processing hole positions during drilling.

[0004] The technical solution adopted by the present invention is:

[0005] An internal gear drilling method, which realizes drilling by using an internal gear drilling tooling and a drilling machine. The internal gear drilling tooling includes a drill die positioning device, two profiling devices, a sliding platform, and two lower die devices. Each of the lower die devices is installed on the sliding platform, and each of the profiling devices is installed on the sliding platform. Each of the profiling devices and the corresponding lower die device cooperate to clamp the internal gear. The drilling method includes the following steps:

[0006] S1: Use the drill die positioning device to position the hole positions of the profiling devices;

[0007] S2: Place the internal gear on the lower die device under the drilling machine and clamp it with the profiling device;

[0008] S3: Start the drilling machine to drill the internal gear;

[0009] S4: The sliding platform moves, and the processed internal gear is removed;

[0010] S5: Place the next internal gear to be processed on the lower die device under the drilling machine;

[0011] S6: Repeat S2 to S5.

[0012] Internal gear drilling tooling. The drill jig positioning device includes a drill jig positioning bottom plate, a positioning pressing shaft, and a positioning block. The profiling device includes a spline profiling base and a drill template. A number of profiling holes are provided on the drill template. A chute is provided on the drill jig positioning bottom plate. The positioning block slides along the chute. The spline profiling base is provided with a tooth profile that matches the internal teeth of the internal gear. The positioning block is provided with a tooth profile that fits the spline profiling base. The positioning pressing shaft is fixedly installed on the drill jig positioning bottom plate. A number of long holes are provided on the drill template. The drill template and the spline profiling base are fixed through the long holes.

[0013] Preferably, the center line of the chute points to the axis of the positioning pressing shaft.

[0014] Preferably, the positioning block has a sliding rod that fits the chute.

[0015] Preferably, the positioning pressing shaft is provided with a threaded end.

[0016] Preferably, there are four long holes. The long holes are equidistantly arranged circumferentially around the center of the drill template. The central angle corresponding to each long hole on the drill template is 30 to 35 degrees.

[0017] Preferably, the distance from the chute to the axis of the positioning pressing shaft is 45 to 90 millimeters.

[0018] Preferably, the lower die device includes a tensioning cylinder and an upper pressing plate assembly. The tensioning cylinder is installed at the bottom of the sliding platform. The upper pressing plate assembly is detachably connected to the tensioning cylinder. The upper pressing plate assembly presses the internal gear.

[0019] Preferably, a vertical groove and a horizontal groove connected to the vertical groove are provided at the end of the tensioning cylinder. The upper pressing plate assembly is provided with a cross bar. When the cross bar slides into the horizontal groove, the tensioning cylinder can tension the upper pressing plate assembly.

[0020] Preferably, the drilling tooling further includes an air gun.

[0021] The beneficial effects of the present invention are:

[0022] Internal gear drilling method. Drilling is achieved by using the internal gear drilling tooling and a drilling machine. The internal gear drilling tooling includes a drill jig positioning device, two profiling devices, a sliding platform, and two lower die devices. Each of the lower die devices is installed on the sliding platform. Each of the profiling devices is installed on the sliding platform. Each of the profiling devices and the corresponding lower die device cooperate to clamp the internal gear. The drilling method includes the following steps:

[0023] S1: Use the drill jig positioning device to position the hole positions of the profiling device. Since there is a corresponding relationship between the hole positions of the internal gear and the tooth profile of the internal gear, it is necessary to first use the drill jig positioning device to position the hole positions of the profiling device. During drilling, the profiling device provides support for the drill bit.

[0024] S2: Place the internal gear on the lower die device at the lower side of the drilling machine and clamp it with the profiling device. The internal gear, as the workpiece, is clamped and positioned by the profiling device.

[0025] S3: Start the drilling machine to drill the internal gear. The drill bit extends into the hole position of the profiling device and then drills.

[0026] S4: The sliding platform moves to remove the machined internal gear.

[0027] S5: Place the next internal gear to be machined on the lower die device at the lower side of the drilling machine.

[0028] S6: Repeat S2 to S5. During the drilling process, the processing speed is fast and the position of the processed hole is accurate. Brief Description of the Drawings

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0030] Figure 2 is Figure 1 an enlarged schematic diagram at A in

[0031] Figure 3 It is a schematic diagram of the positional relationship between the jig positioning device and the profiling device.

[0032] Figure 4 It is a schematic diagram of the structure of the jig positioning bottom plate.

[0033] Figure 5 It is a schematic diagram of the structure of the positioning block.

[0034] Figure 6 It is a schematic diagram of the structure of the profiling device.

[0035] Description of the Reference Numerals:

[0036] 1. Jig positioning device; 11. Jig positioning bottom plate; 111. Slide groove; 12. Positioning pressing shaft; 13. Positioning block; 131. Slide bar;

[0037] 2. Profiling device; 21. Spline profiling base; 22. Drill template; 221. Profiling hole; 222. Long hole;

[0038] 3. Sliding platform;

[0039] 4. Lower die device; 41. Tightening cylinder;

[0040] 5. Upper pressing plate assembly; 51. Cross bar. Detailed Embodiment

[0041] The present invention will be further described below with reference to the drawings:

[0042] AsFigure 1-6 As shown in the figure, this embodiment provides a method for drilling an internal gear, which realizes drilling by using an internal gear drilling tooling and a drilling machine. The internal gear drilling tooling includes a drill jig positioning device 1, two profiling devices 2, a sliding platform 3 and two lower die devices 4. Each lower die device 4 is installed on the sliding platform 3, each profiling device 2 is installed on the sliding platform 3, and each profiling device 2 cooperates with the corresponding lower die device 4 to clamp the internal gear. The drilling method includes the following steps:

[0043] S1: Use the drill jig positioning device 1 to position the hole position of the profiling device 2. Since there is a corresponding relationship between the hole position of the internal gear and the tooth profile of the internal gear, it is necessary to first use the drill jig positioning device 1 to position the hole position of the profiling device 2. During drilling, the profiling device 2 provides support for the drill bit to prevent the drill bit from breaking;

[0044] S2: Place the internal gear on the lower die device 4 on the lower side of the drilling machine and clamp it with the profiling device 2. The internal gear, as a workpiece, is clamped and positioned by the profiling device 2;

[0045] S3: Start the drilling machine to drill the internal gear, and the drill bit extends into the hole position of the profiling device 2 to perform drilling;

[0046] S4: The sliding platform 3 moves to remove the machined internal gear;

[0047] S5: Place the next internal gear to be machined on the lower die device 4 on the lower side of the drilling machine;

[0048] S6: Repeat S2 to S5. During drilling, the processing speed is fast and the processed hole position is accurate.

[0049] The jig positioning device 1 includes a jig positioning bottom plate 11, a positioning pressing shaft 12 and a positioning block 13. The profiling device 2 includes a spline profiling base 21 and a drill template 22. A number of profiling holes 221 are provided on the drill template 22. A chute 111 is provided on the jig positioning bottom plate 11. The positioning block 13 slides along the chute 111. The spline profiling base 21 is provided with a tooth profile that mates with the internal teeth of the internal gear. The positioning block 13 is provided with a tooth profile that fits the spline profiling base 21. The positioning pressing shaft 12 is fixedly installed on the jig positioning bottom plate 11. A number of long holes 222 are provided on the drill template 22. The drill template 22 and the spline profiling base 21 are fixed through the long holes 222. Due to the existence of the long holes 222, the drill template 22 and the spline profiling base 21 can rotate relative to each other so that the positions of the profiling holes 221 correspond to the tooth profile of the internal gear. When adjusting the rotation angle between the drill template 22 and the spline profiling base 21, first press the positioning pressing shaft 12 into the central holes of the spline profiling base 21 and the drill template 22, and then lock the positioning pressing shaft 12 on the jig positioning bottom plate 11. Subsequently, slide the positioning block 13 along the chute 111 to match the tooth profile of the internal gear. Then rotate and adjust the angle of the drill template 22. When the position of the profiling hole 221 on the drill template 22 is adjusted to the appropriate position, bolts lock the spline profiling base 21 and the drill template 22 at the positions of the long holes 222, thereby achieving the adaptation between the profiling holes 221 on the jig positioning bottom plate 11 and the tooth profile of the internal gear workpiece.

[0050] The center line of the chute 111 points to the axis of the positioning pressing shaft 12. The positioning block 13 has a sliding rod 131 that fits the chute 111. When the positioning block 13 slides along the chute 111, it can fit the internal gear workpiece more accurately.

[0051] The positioning pressing shaft 12 is provided with a threaded end. When the bolts lock the spline profiling base 21 and the drill template 22 at the positions of the long holes 222, nuts can be installed on the threaded end first to press and lock the spline profiling base 21 and the drill template 22, avoiding the dislocation of the adjusted hole positions.

[0052] Four long holes 222 are provided. The long holes 222 are equidistantly arranged circumferentially around the center of the drill template 22. The central angle corresponding to each long hole 222 on the drill template 22 is 30 to 35 degrees. The distance from the chute 111 to the axis of the positioning pressing shaft 12 is 45 to 90 millimeters, which can adapt to workpieces of different sizes.

[0053] A sliding cylinder is also installed on the sliding platform 3. The sliding cylinder pushes the sliding platform 3 to slide, thereby realizing the switching of the positions of the two lower die devices 4 and achieving a double-station operation.

[0054] The lower die device 4 is fixedly installed on the sliding platform 3 and the lower die device 4 is provided with a tooth profile that mates with the internal teeth of the internal gear. The internal gear workpiece can be directly sleeved on the tooth profile of the lower die device 4.

[0055] The lower die device 4 includes a tensioning cylinder 41 and an upper pressing plate assembly 5. The tensioning cylinder 41 is installed at the bottom of the sliding platform 3, and the upper pressing plate assembly 5 is detachably connected to the tensioning cylinder 41. The upper pressing plate assembly 5 presses the internal gear, thereby realizing the clamping of the internal gear workpiece.

[0056] A vertical groove and a horizontal groove connected to the vertical groove are provided at the end of the tensioning cylinder 41. The upper pressing plate assembly 5 is provided with a cross bar 51. When the cross bar 51 slides into the horizontal groove, the tensioning cylinder 41 can tension the upper pressing plate assembly 5. When installing the upper pressing plate assembly 5, first insert the cross bar 51 into the vertical groove, and then rotate the upper pressing plate assembly 5 so that the cross bar 51 enters the horizontal groove.

[0057] The drilling tooling further includes an air gun for blowing away iron chips.

[0058] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A method for drilling an internal gear, which realizes drilling by using an internal gear drilling tooling and a drilling machine, is characterized in that The internal gear drilling tooling includes a drill jig positioning device, two profiling devices, a sliding platform, and two lower die devices. Each of the lower die devices is installed on the sliding platform. The lower die device includes a tensioning cylinder and an upper pressing plate assembly. The tensioning cylinder is installed at the bottom of the sliding platform. The upper pressing plate assembly is detachably connected to the tensioning cylinder. The upper pressing plate assembly presses the internal gear. A vertical groove and a horizontal groove connected to the vertical groove are provided at the end of the tensioning cylinder. A cross bar is provided on the upper pressing plate assembly. When the cross bar slides into the horizontal groove, the tensioning cylinder can tighten the upper pressing plate assembly. Each profiling device is installed on the sliding platform. Each profiling device and the corresponding lower die device cooperate to clamp the internal gear. The drilling method includes the following steps: S1: Use the drill jig positioning device to position the hole positions of the profiling devices; S2: Place the internal gear on the lower die device under the drilling machine and clamp it with the profiling devices; S3: Start the drilling machine to drill the internal gear; S4: The sliding platform moves to remove the machined internal gear; S5: Place the next internal gear to be machined on the lower die device under the drilling machine; S6: Repeat S2 to S5.

2. The internal gear drilling tooling used in the internal gear drilling method according to claim 1, characterized in that, The drill jig positioning device includes a drill jig positioning bottom plate, a positioning pressing shaft, and a positioning block. The profiling device includes a spline profiling seat and a drill template. A number of profiling holes are provided on the drill template. A sliding groove is provided on the drill jig positioning bottom plate. The positioning block slides along the sliding groove. The spline profiling seat is provided with a tooth shape adapted to the internal teeth of the internal gear. The positioning block is provided with a tooth shape adapted to the spline profiling seat. The positioning pressing shaft is fixedly installed on the drill jig positioning bottom plate. A number of long holes are provided on the drill template. The drill template and the spline profiling seat are fixed through the long holes.

3. The internal gear drilling tooling according to claim 2, wherein The center line of the sliding groove points to the axis of the positioning pressing shaft.

4. The internal gear drilling tooling according to claim 2, characterized in that, The positioning block has a sliding rod adapted to the sliding groove.

5. The internal gear drilling tooling according to claim 2, characterized in that, The positioning pressing shaft is provided with a threaded end.

6. The internal gear drilling tooling according to claim 2, characterized in that, There are four long holes. Each of the long holes is equidistantly arranged circumferentially around the center of the drill template. The central angle corresponding to each long hole on the drill template is 30 to 35 degrees.

7. The internal gear drilling tooling according to claim 2, characterized in that, The distance from the sliding groove to the axis of the positioning pressing shaft is 45 to 90 millimeters.

8. The internal gear drilling tooling according to claim 2, wherein, The drilling tooling further includes an air gun.

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