A drilling equipment for shaft parts production and processing

Abstract

The application relates to the technical field of drilling equipment, and particularly discloses a drilling equipment for shaft part production and machining, which comprises a base, and the side surface of the base is provided in a hollow-through mode. When the bellows is extruded, the internal air pressure of the bellows is delivered into a first telescopic rod, so that the internal air pressure of the first telescopic rod is increased, the output end of the first telescopic rod starts to extrude outward, the first plug-in plate and the second plug-in plate start to shrink circularly, the inner surface of the second plug-in plate is finally extruded and attached to the outer surfaces of the two ends of the shaft part to fix the shaft part, and the two ends of the shaft part are automatically fixed when the drilling machine is lowered and is ready to drill the shaft part. Compared with the current drilling equipment which needs manual operation to manually fix the shaft part, the automatic degree of the equipment is greatly improved, and the combination of the telescopic first plug-in plate and the second plug-in plate can match shaft parts with different diameters.

Description

Technical Field

[0001] This invention relates to the field of drilling equipment technology, specifically to a drilling equipment for the production and processing of shaft-type parts. Background Technology

[0002] In the field of shaft parts processing, drilling equipment is a key tool for achieving precise machining of parts. The shaft parts drilling equipment provided by this invention achieves automatic positioning, fixing, and drilling operations on shaft parts through the coordinated design of a drilling mechanism and a stabilizing mechanism. Its core lies in using the air pressure generated by bellows extrusion to drive the first and second telescopic rods, in conjunction with retractable first and second insertion plates and an elastic clamping structure, to achieve adaptive fixing and stable drilling of shaft parts of different diameters. This is suitable for high-precision machining scenarios involving large-scale shaft parts production.

[0003] Traditional drilling equipment for shaft parts has significant shortcomings. In terms of automation, traditional equipment relies on manual fixing of shaft parts, which is cumbersome, inefficient, and unsuitable for mass production. It also suffers from poor compatibility; the fixing fixtures are mostly rigid structures that cannot automatically adjust to the diameter of the shaft parts, requiring frequent fixture changes and increasing production costs and downtime. Furthermore, it lacks stability, as it lacks a secondary fixing mechanism for the parts, making it prone to hole position deviations due to part vibration during drilling, especially significantly affecting the machining accuracy of parts with large length-to-diameter ratios. In addition, traditional clamping methods have insufficient friction, and the small contact area of ​​the rubber plate is insufficient to resist vibrations during drilling, causing even slight displacements of the parts that affect machining accuracy. Moreover, it cannot provide targeted support for the drilling area, hindering improvements in the quality and efficiency of shaft part drilling. Summary of the Invention

[0004] This invention provides a drilling device for the production and processing of shaft parts, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a drilling device for manufacturing shaft parts, comprising a base, the side surface of which is hollow, and further comprising: a drilling mechanism fixedly mounted on the base; and a stabilizing mechanism fixedly mounted on the drilling mechanism; wherein the drilling mechanism includes a slide rod symmetrically and fixedly connected to the inner surfaces of both sides of the base, a slide seat slidably sleeved on the slide rod, a support rod fixedly connected to the upper surface of the slide seat on the side away from the base, the support rod symmetrically arranged on both sides of the base, a slider slidably sleeved on the support rod, a connecting frame fixedly connected to the side surface of the slider, and a drilling machine fixedly connected to the middle of the connecting frame, the drilling machine being in the same vertical plane as the central axis of the base.

[0006] According to one embodiment of the present invention, mounting rings are symmetrically fixedly connected to the upper surfaces of both sides of the base, wherein the two mounting rings are arranged on the same central axis, and the central axis of the two mounting rings is arranged on the same vertical plane as the central axis of the drilling machine.

[0007] According to one embodiment of the present invention, a connecting cover is fixedly connected to the outer surface of the mounting ring, and four connecting covers are arranged at fixed intervals along the central axis of the same mounting ring. A limiting rod is fixedly connected to the inner surface of the connecting cover, and the end of the limiting rod away from the connecting cover passes through the mounting ring.

[0008] According to one embodiment of the present invention, a first plug-in plate is slidably connected to the limiting rod by a spring, and a second plug-in plate is slidably inserted into both ends of the first plug-in plate. The first plug-in plate and the second plug-in plate are combined to form a ring shape, and the outer surface of the second plug-in plate is initially attached to the inner surface of the mounting ring.

[0009] According to one embodiment of the present invention, a first telescopic rod is fixedly connected through the outer surface of the mounting ring. Four first telescopic rods are arranged at fixed intervals along the central axis on the same mounting ring, wherein the first telescopic rods are arranged between two adjacent connecting covers. The output end of the first telescopic rod is fixedly connected to the outer surface of the second plug plate. The end of the first telescopic rod away from the mounting ring is fixedly connected to a connecting ring. The four first telescopic rods on the same mounting ring are interconnected through the connecting ring.

[0010] According to one embodiment of the present invention, a bottom ring is fixedly sleeved on the bottom outer surface of the support rod, a corrugated tube is fixedly connected to the upper surface of the bottom ring, the corrugated tube is sleeved on the outside of the support rod, a top ring is fixedly connected to the top of the corrugated tube, the top ring is slidably sleeved on the top outer surface of the support rod, wherein the top ring is located below the slider, and the bottom of the corrugated tube communicates with the internal cavity of the connecting ring through a flexible tube.

[0011] According to one embodiment of the present invention, the stabilizing mechanism includes a second telescopic rod, which is fixedly connected to the bottom outer surface of the support rod. The second telescopic rod is located below the bottom ring, and the second telescopic rods on the two support rods are arranged opposite to each other. A collar is fixedly sleeved on the outer surface of the end of the second telescopic rod away from the support rod. The bottom of the collar is fixedly connected to the upper surface of the slide block through the upper surface of the base via a connecting rod.

[0012] According to one embodiment of the present invention, an installation rod is fixedly connected to the end of the second telescopic rod away from the support rod, and installation plates are symmetrically fixedly connected to both ends of the installation rod. The installation plates are arc-shaped, and sliding plates are symmetrically slidably connected through the outer surface of the installation plates. A clamping plate is fixedly connected to the end of the sliding plate away from the installation plate. The clamping plate is arc-shaped, and a rubber plate is fixedly embedded on the inner surface of the clamping plate.

[0013] According to one embodiment of the present invention, elastic telescopic plates are symmetrically fixedly connected to the outer surfaces of the upper and lower ends of the mounting plate. The elastic telescopic plates are arc-shaped, and the output ends of the elastic telescopic plates are fixedly connected to the outer surfaces of the upper and lower ends of the clamping plate. A compression bladder is fixedly connected to the inner surface of the mounting plate. The outer surface of the compression bladder away from the mounting plate is fixedly connected to the surface of the clamping plate close to the mounting plate. The internal cavity of the compression bladder communicates with the internal cavity of the elastic telescopic plate. The shaft part is placed through the mounting ring and the drilling machine is started. Then, the driving connecting frame drives the drilling machine to move down along the support rod through the slider and approach the shaft part until the drilling machine contacts the shaft part and drills a hole to complete the drilling requirement of the shaft part. The shaft part passing through the two mounting rings means that the shaft part is inside the first and second plug-in plates. At this time, as the connecting frame and the slider move down, the top ring is squeezed by the slider, causing the top ring to slide down along the support rod, and then the bellows is squeezed.

[0014] This invention provides a drilling device for manufacturing shaft-type parts. It has the following advantages:

[0015] (I) The drilling equipment for manufacturing shaft parts, when the bellows is squeezed, will send its internal air pressure to the No. 1 telescopic rod, thus increasing the internal air pressure of the No. 1 telescopic rod. This causes the output end of the No. 1 telescopic rod to start squeezing outward, that is, to start pushing the No. 1 and No. 2 plug-in plates to begin circular contraction. Finally, the inner surface of the No. 2 plug-in plate is squeezed and adhered to the outer surfaces of both ends of the shaft part to fix it. This achieves automatic fixation of both ends of the shaft part when the drilling machine moves down to prepare for drilling. Compared with the current drilling equipment, which requires manual operation to fix the shaft part, this method is much more efficient. The fixed design significantly improves the automation level of this equipment. The retractable combination of the No. 1 and No. 2 connectors allows the equipment to accommodate shaft parts of different diameters, greatly enhancing its applicability and enabling drilling of shaft parts of various sizes. Furthermore, by automatically balancing the internal air pressure of the No. 1 telescopic rod on the two mounting rings, the equipment can achieve good fixing even when drilling shaft parts with different diameters at both ends, avoiding the frequent fixture changes required by existing drilling equipment and further improving its applicability.

[0016] (II) The drilling equipment used for manufacturing and processing this type of shaft part, as the bellows is squeezed, simultaneously delivers its internal air pressure to the interior of the second telescopic rod, causing the output ends of the two second telescopic rods to move closer together, thereby driving the two mounting rods to move closer together. Ultimately, this causes the two mounting plates to press and adhere to both sides of the shaft part. This allows for initial fixation of the shaft part through the first and second insertion plates during drilling, and secondary fixation of the shaft part through the squeezing of the mounting plates. It automatically clamps and fixes both sides of the drilling area, preventing drilling accuracy issues caused by vibration due to the length of the shaft part during drilling. After drilling is completed, the drilling machine moves upward, at which point the mounting plates and the first and second insertion plates gradually detach from the squeezing of the shaft part, facilitating rapid position adjustment of the shaft part and making it convenient for rotating and adjusting the drilling position of the shaft part.

[0017] (III) The drilling equipment for manufacturing and processing shaft parts has a clamping plate on the outer side of the mounting plate. As the two mounting rods approach each other, the clamping plate and the rubber plate are pressed and adhered to the outer surface of the shaft part. The rubber plate greatly enhances the friction between the clamping plate and the shaft part, avoiding drilling accuracy problems caused by slight overturning of the shaft part due to vibration during drilling. At the same time, when the clamping plate begins to press and fix the shaft part, it will move closer to the mounting plate through the sliding plate, so that the compression bladder between the mounting plate and the clamping plate is compressed and deformed, and the internal air pressure is transmitted to the elastic telescopic plates at both ends of the mounting plate, causing the elastic telescopic plates to expand outward, that is, to begin to compress the two ends of the clamping plate to move closer and contract. When the clamping plate presses against both sides of the shaft part, it automatically contracts at both ends, greatly increasing the contact area between the rubber plate and the shaft part, that is, increasing the friction between the clamping plate and the shaft part, further ensuring the stability of drilling, and avoiding the problem that the contact area between the rubber plate on the clamping plate and the outer surface of the shaft part is too small when the diameter of the shaft part is small, so that it cannot achieve a good fixing effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the slide bar and its connection structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the mounting ring and its connection structure of the present invention;

[0021] Figure 4 This is a schematic diagram of the connecting loop and its connection structure of the present invention;

[0022] Figure 5 This is a schematic diagram of the bellows and its connection structure of the present invention;

[0023] Figure 6 This is a schematic diagram of the installation structure of the No. 2 telescopic rod of the present invention;

[0024] Figure 7 This is a schematic diagram of the mounting plate and its connection structure of the present invention;

[0025] Figure 8 This is a schematic diagram of the installation position of the compression bladder of the present invention.

[0026] In the diagram: 1. Base; 2. Drilling mechanism; 21. Slide rod; 22. Slide seat; 23. Support rod; 24. Slider; 25. Connecting frame; 26. Drilling machine; 27. Mounting ring; 28. Connecting cover; 29. ​​Limiting rod; 210. No. 1 plug-in plate; 211. No. 2 plug-in plate; 212. No. 1 telescopic rod; 213. Connecting ring; 214. Bottom ring; 215. Corrugated pipe; 216. Top ring; 3. Stabilizing mechanism; 31. No. 2 telescopic rod; 32. Collar; 33. Mounting rod; 34. Mounting plate; 35. Sliding plate; 36. Clamping plate; 37. Rubber plate; 38. Elastic telescopic plate; 39. Compression bladder. Detailed Implementation

[0027] 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.

[0028] First embodiment: as follows Figures 1 to 8 As shown, the present invention provides a technical solution: a drilling device for manufacturing shaft-type parts, comprising a base 1, wherein the side surface of the base 1 is configured as a through-hole shape, and further comprising:

[0029] Drilling mechanism 2 is fixedly installed on base 1;

[0030] Stabilizing mechanism 3 is fixedly installed on drilling mechanism 2;

[0031] The drilling mechanism 2 includes a slide rod 21, which is symmetrically fixedly connected to the inner surfaces of both sides of the base 1. A slide seat 22 is slidably sleeved on the slide rod 21. A support rod 23 is fixedly connected to the upper surface of the slide seat 22 on the side away from the base 1. The support rod 23 is symmetrically arranged on both sides of the base 1. A slider 24 is slidably sleeved on the support rod 23. A connecting frame 25 is fixedly connected to the side surface of the slider 24. A drilling machine 26 is fixedly connected to the middle of the connecting frame 25. The drilling machine 26 and the central axis of the base 1 are in the same vertical plane.

[0032] Mounting rings 27 are symmetrically fixedly connected to the upper surfaces of both sides of the base 1. The two mounting rings 27 are located on the same central axis, and the central axis of the two mounting rings 27 is located on the same vertical plane as the central axis of the drilling machine 26.

[0033] A connecting cover 28 is fixedly connected to the outer surface of the mounting ring 27. Four connecting covers 28 are fixedly spaced along the central axis of the same mounting ring 27. A limit rod 29 is fixedly connected to the inner surface of the connecting cover 28. The end of the limit rod 29 away from the connecting cover 28 passes through the mounting ring 27.

[0034] A first plug plate 210 is slidably connected to the limiting rod 29 via a spring. A second plug plate 211 is slidably plugged into both ends of the first plug plate 210. The first plug plate 210 and the second plug plate 211 are combined to form a ring. The outer surface of the second plug plate 211 is initially attached to the inner surface of the mounting ring 27.

[0035] A telescopic rod 212 is fixedly connected through the outer surface of the mounting ring 27. Four telescopic rods 212 are fixedly spaced along the central axis of the same mounting ring 27. The first telescopic rod 212 is located between two adjacent connecting covers 28. The output end of the first telescopic rod 212 is fixedly connected to the outer surface of the second plug plate 211. The end of the first telescopic rod 212 away from the mounting ring 27 is fixedly connected through a connecting ring 213. The four first telescopic rods 212 on the same mounting ring 27 are interconnected through the connecting ring 213.

[0036] A bottom ring 214 is fixedly sleeved on the bottom outer surface of the support rod 23. A bellows 215 is fixedly connected to the upper surface of the bottom ring 214. The bellows 215 is sleeved on the outside of the support rod 23. A top ring 216 is fixedly connected to the top of the bellows 215. The top ring 216 is slidably sleeved on the top outer surface of the support rod 23. The top ring 216 is located below the slider 24. The bottom of the bellows 215 is connected to the internal cavity of the connecting ring 213 through a flexible tube.

[0037] Second embodiment: as follows Figures 1 to 8 As shown, the stabilizing mechanism 3 includes a second telescopic rod 31, which is fixedly connected to the bottom outer surface of the support rod 23. The second telescopic rod 31 is located below the bottom ring 214, and the second telescopic rods 31 on the two support rods 23 are arranged opposite to each other. A collar 32 is fixedly sleeved on the outer surface of the end of the second telescopic rod 31 away from the support rod 23. The bottom of the collar 32 is fixedly connected to the upper surface of the slide block 22 through the upper surface of the base 1 via a connecting rod.

[0038] The second telescopic rod 31 is fixedly connected to an installation rod 33 at one end away from the support rod 23. The two ends of the installation rod 33 are symmetrically fixedly connected to installation plates 34. The installation plates 34 are arc-shaped. The outer surface of the installation plates 34 is symmetrically slidably connected to sliding plates 35. The end of the sliding plate 35 away from the installation plate 34 is fixedly connected to a clamping plate 36. The clamping plate 36 is arc-shaped. The inner surface of the clamping plate 36 is fixedly inlaid with a rubber plate 37.

[0039] Elastic telescopic plates 38 are symmetrically fixedly connected to the outer surfaces of the upper and lower ends of the mounting plate 34. The elastic telescopic plates 38 are arc-shaped. The output ends of the elastic telescopic plates 38 are fixedly connected to the outer surfaces of the upper and lower ends of the clamping plate 36. A compression bladder 39 is fixedly connected to the inner surface of the mounting plate 34. The outer surface of the compression bladder 39 away from the mounting plate 34 is fixedly connected to the surface of the clamping plate 36 near the mounting plate 34. The internal cavity of the compression bladder 39 communicates with the internal cavity of the elastic telescopic plates 38.

[0040] During operation, the shaft-like part is placed through the mounting ring 27 and the drilling machine 26 is started. Then, the drive connecting frame 25 moves the drilling machine 26 down along the support rod 23 via the slider 24, approaching the shaft-like part. Drilling is completed when the drilling machine 26 contacts the shaft-like part. The shaft-like part passing through the two mounting rings 27 means it is inside the first insertion plate 210 and the second insertion plate 211. At this point, as the connecting frame 25 and the slider 24 move down, the top ring 216 is compressed by the slider 24, causing it to slide down along the support rod 23 and begin to compress the bellows 215. When the bellows 215 is compressed, its internal air pressure is transmitted to the first telescopic rod 212, thus... The internal air pressure of the first telescopic rod 212 increases, causing its output end to push outwards. This pushes the first connector plate 210 and the second connector plate 211 to begin circular retraction. Ultimately, the inner surface of the second connector plate 211 is pressed against the outer surfaces of both ends of the shaft part, fixing it in place. This achieves automatic fixation of both ends of the shaft part when the drilling machine 26 moves down to prepare for drilling. Compared to current drilling equipment that requires manual fixation of shaft parts, this significantly improves the automation level of the equipment. Furthermore, the retractable combination of the first and second connector plates 210 allows the equipment to accommodate shaft parts of different diameters, greatly expanding its applicability. This device is designed to match and complete the drilling of shaft parts of various sizes. Simultaneously, it automatically balances the internal air pressure of the first telescopic rod 212 on the two mounting rings 27, achieving a good fixing effect even when drilling shaft parts with different diameters at both ends. This avoids the problem of frequent fixture changes required by existing drilling equipment, further improving the applicability of this device. As the bellows 215 is compressed, its internal air pressure is simultaneously delivered to the interior of the second telescopic rod 31, causing the output ends of the two second telescopic rods 31 to move closer together, thereby driving the two mounting rods 33 to move closer together. Ultimately, this causes the two mounting plates 34 to press and adhere to both sides of the shaft part, thus achieving a good fixing effect when drilling shaft parts. The first and second connector plates 210 and 211 provide initial fixation, and the mounting plate 34 then provides secondary fixation of the shaft part by pressing it. This automatically clamps and fixes both sides of the drilling area, preventing vibrations caused by the shaft part's length during drilling and ensuring drilling accuracy. After drilling is complete, the drilling machine 26 moves upward, and the mounting plate 34 and the first and second connector plates 210 and 211 gradually release their pressure on the shaft part. This facilitates quick position adjustment of the shaft part and allows for rotational adjustments to the drilling position. The mounting plate 34 has a clamping plate 36 on its outer side; as the two mounting rods 33 approach each other, the clamping plate 36 and the rubber plate 37 are pressed and adhered to the outer surface of the shaft part.The rubber plate 37 significantly enhances the friction between the clamping plate 36 and the shaft-like parts, preventing drilling accuracy issues caused by slight rotation of the shaft-like parts due to vibration during drilling. Simultaneously, when the clamping plate 36 begins to compress and fix the shaft-like parts, it moves closer to the mounting plate 34 via the sliding plate 35. This causes the compression bladder 39 between the mounting plate 34 and the clamping plate 36 to deform, transmitting its internal air pressure to the elastic telescopic plates 38 at both ends of the mounting plate 34. This causes the elastic telescopic plates 38 to expand outwards, thus compressing the ends of the clamping plate 36 closer together. This allows the clamping plate 36 to automatically contract at both ends when pressing against the shaft-like parts, significantly increasing the contact area between the rubber plate 37 and the shaft-like parts, thereby increasing the friction between them and further ensuring drilling stability. This avoids the problem of insufficient contact area between the rubber plate 37 and the outer surface of the shaft-like parts when the diameter of the shaft-like parts is small, resulting in inadequate fixing.

[0041] 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0042] 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 drilling device for producing and processing shaft parts, comprising a base (1), characterized in that: The side surface of the base (1) is provided as a through hollow shape, further comprising: The punching mechanism (2) is fixedly installed on the base (1); The stabilizing mechanism (3) is fixedly installed on the punching mechanism (2); The punching mechanism (2) comprises a sliding rod (21) fixedly connected to the inner surfaces of the two sides of the base (1), a sliding seat (22) slidably sleeved on the sliding rod (21), a support rod (23) fixedly connected to the upper surface of the side of the sliding seat (22) away from the base (1), the support rod (23) symmetrically arranged on the two sides of the base (1), a sliding block (24) slidably sleeved on the support rod (23), a connecting frame (25) fixedly connected to the side surface of the sliding block (24), and a drilling machine (26) fixedly connected to the middle part of the connecting frame (25), wherein the drilling machine (26) and the central axis of the base (1) are in the same vertical plane. The stabilizing mechanism (3) comprises a second telescopic rod (31) fixedly connected to the bottom outer surface of the support rod (23), wherein the second telescopic rod (31) is arranged below the bottom ring (214), and the second telescopic rods (31) on the two support rods (23) are oppositely arranged, the outer surface of one end of the second telescopic rod (31) away from the support rod (23) is fixedly sleeved with a sleeve ring (32), and the bottom of the sleeve ring (32) is fixedly connected with the upper surface of the sliding seat (22) through a connecting rod penetrating the upper surface of the base (1). The second telescopic rod (31) is fixedly connected with a mounting rod (33) at one end away from the support rod (23), the two ends of the mounting rod (33) are fixedly connected with mounting plates (34) symmetrically, the mounting plates (34) are arranged in an arc shape, the outer surfaces of the mounting plates (34) are symmetrically penetrated by sliding plates (35) slidably connected, one end of the sliding plate (35) away from the mounting plate (34) is fixedly connected with a clamping plate (36), the clamping plate (36) is arranged in an arc shape, and the inner side surface of the clamping plate (36) is fixedly embedded with a rubber plate (37). The outer side surfaces of the upper and lower ends of the mounting plate (34) are fixedly connected with elastic expansion plates (38) symmetrically, the elastic expansion plates (38) are arranged in an arc shape, the output ends of the elastic expansion plates (38) are fixedly connected to the outer side surfaces of the upper and lower ends of the clamping plate (36), the inner side surface of the mounting plate (34) is fixedly connected with a squeeze capsule (39), and the outer surface of one side of the squeeze capsule (39) away from the mounting plate (34) is fixedly connected to the surface of the clamping plate (36) close to the mounting plate (34), wherein the internal cavities of the squeeze capsule (39) and the elastic expansion plates (38) are in communication.

2. The drilling apparatus for producing and processing shaft parts according to claim 1, characterized in that: The upper surfaces of the two sides of the base (1) are fixedly connected with mounting rings (27) symmetrically, wherein the two mounting rings (27) are arranged on the same central axis, and the central axes of the two mounting rings (27) and the central axis of the drilling machine (26) are arranged in the same vertical plane.

3. The drilling apparatus for producing and processing shaft parts according to claim 2, characterized in that: The outer surface of the mounting ring (27) is fixedly connected with a connecting cover (28), four connecting covers (28) are fixedly arranged on the same mounting ring (27) along the central axis thereof at an interval, the inner surface of the connecting cover (28) is fixedly connected with a limiting rod (29), and one end of the limiting rod (29) away from the connecting cover (28) penetrates the mounting ring (27).

4. The drilling apparatus for producing and processing shaft parts according to claim 3, characterized in that: A first plug-in plate (210) is slidably connected to the limiting rod (29) through a spring, both ends of the first plug-in plate (210) are slidably plugged with a second plug-in plate (211), the first plug-in plate (210) and the second plug-in plate (211) are combined into a circular ring, and the outer surface of the second plug-in plate (211) is initially attached to the inner surface of the mounting ring (27).

5. The drilling apparatus for producing and processing shaft parts according to claim 4, characterized in that: The outer surface of the mounting ring (27) is fixedly connected with a first telescopic rod (212), four first telescopic rods (212) are fixedly arranged on the same mounting ring (27) along the central axis thereof at an interval, one of the first telescopic rods (212) is arranged between two adjacent connecting covers (28), the output end of the first telescopic rod (212) is fixedly connected to the outer surface of the second plug-in plate (211), and one end of the first telescopic rod (212) away from the mounting ring (27) penetrates a communication ring (213), and the four first telescopic rods (212) on the same mounting ring (27) are communicated with each other through the communication ring (213).

6. The drilling apparatus for producing and processing shaft parts according to claim 5, characterized in that: The bottom outer surface of the supporting rod (23) is fixedly sleeved with a bottom ring (214), the upper surface of the bottom ring (214) is fixedly connected with a bellows (215), the bellows (215) is sleeved on the outer side of the supporting rod (23), the top of the bellows (215) is fixedly connected with a top ring (216), the top ring (216) is slidably sleeved on the top outer surface of the supporting rod (23), and the top ring (216) is arranged below the sliding block (24), wherein the bottom of the bellows (215) is communicated with the inner cavity of the communication ring (213) through a hose.

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