A main shaft for numerical control boring and milling machine with convenient attachment mounting and dismounting

Abstract

The application discloses a main shaft of a numerical control boring and milling machine convenient for accessory mounting and dismounting, and relates to the technical field of boring and milling machine main shafts.The main shaft comprises a main shaft, a cylinder, a rotating part and an extension part; one end of the main shaft is fixedly connected with the piston output end of the cylinder, the other end of the main shaft is slidably connected with the extension part, and the outer wall of the main shaft is slidably connected with the rotating part. The rotating part comprises a limiting sleeve ring installed on the outer wall of the main shaft, a rotating part installed on one side of the limiting sleeve ring, a driven wheel installed on the outer wall of the rotating part, a toothed belt installed on the outer wall of the driven wheel, a rotating wheel installed on the other end of the toothed belt, and a motor installed on the rotating wheel. The main shaft is extended in multiple stages by the cooperation of the cylinder and the extension part, and the main shaft is synchronously rotated when being extended by the rotating part. The main shaft processing range is greatly widened, multi-directional processing is realized, heavy parts are prevented from being frequently adjusted due to inconvenient movement, and efficiency loss is reduced.

Description

Technical Field

[0001] This invention relates to the technical field of boring and milling machine spindles, and more particularly to a CNC boring and milling machine spindle that facilitates the loading and unloading of accessories. Background Technology

[0002] A boring and milling machine is a high-precision metal cutting machine tool, mainly used for boring, milling, drilling and other machining operations on workpieces. In the machining process of a CNC boring and milling machine, a motor is used to drive the spindle to rotate, which in turn drives the cutting or grinding device at the spindle end to rotate, thereby machining the parts below.

[0003] In the existing technology, when the spindle is machining workpieces with different requirements, it is necessary to change the machining accessories. The replacement of accessories for large spindles still relies on manual positioning, installation and fixation of the tools. However, multiple docking and adjustment are required during positioning, which not only results in low installation efficiency and complicated operation, but also affects the machining process. Furthermore, the position of the parts or devices to be machined needs to be adjusted frequently when machining different parts. Some parts and devices are inconvenient to move due to their large weight, which further affects the spindle assembly efficiency. Summary of the Invention

[0004] In view of the problems existing with the CNC boring and milling machine spindles that are easy to load and unload accessories, the present invention is proposed.

[0005] Therefore, the present invention provides a spindle for CNC boring and milling machines that facilitates the loading and unloading of accessories. Its purpose is to solve the problems of low efficiency and complicated operation when the spindle is used to process workpieces with different requirements. On the one hand, it requires multiple manual positioning and adjustment when changing accessories of large spindles, and on the other hand, it requires frequent adjustment of the position of heavy parts when processing different parts, which is inconvenient to move. These problems have a double impact on the spindle's processing efficiency.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: It includes a main shaft, a cylinder, a rotating part, a mounting part, and an extension part; one end of the main shaft is fixedly connected to the piston output end of the cylinder, and the other end of the main shaft is slidably connected to the extension part; the mounting part is fixedly installed inside the extension part and is connected to the main shaft; the outer wall of the main shaft is slidably connected to the rotating part; the mounting part includes a disassembly component fixedly installed at the output end of the main shaft, a guide component fixedly installed inside the disassembly component, a connector fixedly installed on the outer wall of the disassembly component, a return spring fixedly installed on the outer wall of the connector, and a moving ring fixedly installed on the other end of the return spring.

[0007] As a preferred embodiment of the CNC boring and milling machine spindle described in this invention, which facilitates the loading and unloading of accessories, the spindle's output end is provided with a mounting groove, and the mounting groove is fixedly connected to the mounting part.

[0008] As a preferred embodiment of the CNC boring and milling machine spindle described in this invention, which facilitates the loading and unloading of accessories, a push plate is fixedly installed at the other end of the moving ring, and the push plate is slidably connected to the disassembly component.

[0009] As a preferred embodiment of the CNC boring and milling machine spindle described in this invention, which facilitates the loading and unloading of accessories, a compression ring is slidably disposed inside the spindle, and the compression ring is slidably connected to an L-shaped push rod.

[0010] As a preferred embodiment of the CNC boring and milling machine spindle that facilitates the loading and unloading of accessories as described in this invention, wherein: a fixing component is fixedly installed on the inner wall of the disassembly component, a second return spring is fixedly installed inside the fixing component, a locking block is fixedly installed at the other end of the second return spring, a rolling ball is slidably installed inside the fixing component, a movable fixing ring is slidably installed on the outer wall of the rolling ball, and the movable fixing ring is slidably connected to the locking block.

[0011] As a preferred embodiment of the CNC boring and milling machine spindle described in this invention, which facilitates the loading and unloading of accessories, the rotating part includes a limiting collar slidably mounted on the outer wall of the spindle, a rotating component fixedly mounted on one side of the limiting collar, a driven wheel fixedly mounted on the outer wall of the rotating component, a toothed belt meshing on the outer wall of the driven wheel, a rotating wheel meshing on the other end of the toothed belt, and a motor fixedly mounted on the rotating wheel.

[0012] As a preferred embodiment of the CNC boring and milling machine spindle described in this invention, which facilitates the loading and unloading of accessories, a rotating sleeve is slidably installed inside the rotating component, and a retaining strip is fixedly connected to the outer wall of the rotating sleeve.

[0013] As a preferred embodiment of the spindle for a CNC boring and milling machine that facilitates the loading and unloading of accessories as described in this invention, the inner diameter of the rotating part is provided with a rotating groove, and the rotating groove is slidably connected to the retaining strip.

[0014] As a preferred embodiment of the CNC boring and milling machine spindle described in this invention, which facilitates the loading and unloading of accessories, the extension includes an extension member slidably mounted on the outer wall of the spindle output end, a retaining ring fixedly mounted on the outer wall of the extension member, and an L-shaped push rod fixedly mounted inside the extension member, wherein the L-shaped push rod is slidably connected to the spindle.

[0015] As a preferred embodiment of the CNC boring and milling machine spindle described in this invention, which facilitates the loading and unloading of accessories, the extension has a connecting housing slidably disposed on its outer wall, and a retaining ring two is fixedly disposed on the inner wall of the connecting housing, and the retaining ring two cooperates with the retaining ring one.

[0016] The beneficial effects of the present invention are as follows: The present invention enables the spindle to extend in multiple stages by means of a cylinder and an extension part, and the rotating part enables the boring and milling machine spindle to rotate synchronously during the extension. This not only greatly expands the machining range of the boring and milling machine spindle and enables multi-directional machining, but also avoids the need for frequent adjustments of heavy parts due to inconvenience of movement, thus reducing efficiency loss.

[0017] Simultaneously, a snap-on quick-release structure was designed. When changing the accessory tools installed on the boring and milling machine spindle, the drive component retracts, causing the telescopic component to squeeze the installation component, which in turn causes the snap-on component to automatically release its fixation, enabling quick tool removal. After the newly installed tool is inserted into the installation component under the guidance of the telescopic component, the drive component extends to release the squeeze, allowing the snap-on component to automatically reset and complete its fixation. This achieves automatic positioning, guidance, and fixation of the tool with a single insertion, eliminating the need for multiple manual adjustments, improving the efficiency and accuracy of accessory replacement. Overall, it solves the problems of low efficiency, complex operation, and inconvenience in machining heavy workpieces when changing accessories on the spindle, and improves the automation level of boring and milling machines equipped with this spindle and the overall efficiency of the boring and milling machine. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a cross-sectional structural diagram of the spindle for a CNC boring and milling machine, which facilitates the loading and unloading of accessories according to the present invention.

[0020] Figure 2 This is a schematic diagram of the cylinder structure of the spindle for a CNC boring and milling machine, which facilitates the loading and unloading of accessories according to the present invention.

[0021] Figure 3 This is a schematic diagram of the rotating part of the spindle for a CNC boring and milling machine, which facilitates the loading and unloading of accessories according to the present invention.

[0022] Figure 4 This is a cross-sectional schematic diagram of the rotating part of the spindle of a CNC boring and milling machine, which facilitates the loading and unloading of accessories according to the present invention.

[0023] Figure 5 This is a schematic diagram of the extension structure of the spindle for a CNC boring and milling machine, which facilitates the loading and unloading of accessories according to the present invention.

[0024] Figure 6 This is a diagram showing the internal structure of the extension of the spindle for a CNC boring and milling machine, which facilitates the loading and unloading of accessories according to the present invention.

[0025] Figure 7 This is a cross-sectional view of the extension of the spindle for a CNC boring and milling machine, which facilitates the loading and unloading of accessories according to the present invention.

[0026] Figure 8 The present invention provides a spindle for a CNC boring and milling machine that facilitates the loading and unloading of accessories. Figure 7 Enlarged diagram of point A.

[0027] Figure 9 This is a schematic diagram of the internal structure of the spindle for a CNC boring and milling machine, which facilitates the loading and unloading of accessories according to the present invention.

[0028] Figure 10 This is a schematic diagram of the overall structure of the spindle for a CNC boring and milling machine, which facilitates the loading and unloading of accessories according to the present invention.

[0029] Explanation of reference numerals in the attached drawings: 1. Main shaft; 11. Mounting groove; 2. Cylinder; 3. Rotating part; 31. Limiting collar; 32. Rotating component; 33. Driven wheel; 34. Toothed belt; 35. Rotating wheel; 36. Motor; 37. Rotating groove; 38. Clamping strip; 39. Rotating sleeve rod; 4. Mounting part; 41. Disassembly component; 412. Guide component; 413. Connecting component; 414. Return spring one; 415. Moving ring; 416. Push plate; 417. Pressing ring; 42. Fixing component; 421. Return spring two; 422. Clamping block; 423. Rolling ball; 424. Moving and fixing ring; 5. Extension part; 51. Extension component; 52. L-shaped push rod; 53. Retaining ring one; 54. Connecting housing; 55. Retaining ring two. Detailed Implementation

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0031] Example 1, referring to Figure 1 - Figure 7 The first embodiment of the present invention provides a spindle for a CNC boring and milling machine that facilitates the loading and unloading of accessories. This device includes a spindle 1, a cylinder 2, a rotating part 3, and an extension part 5. One end of the spindle 1 is fixedly connected to the piston output end of the cylinder 2, which drives the spindle 1. The other end of the spindle 1 is slidably connected to the extension part 5, which extends the length of the spindle 1 when it moves. The outer wall of the spindle 1 is slidably connected to the rotating part 3, which enables the spindle 1 to rotate.

[0032] The mounting part 4 includes a disassembly part 41 fixedly mounted on the output end of the spindle 1 for support, a guide part 412 fixedly mounted inside the disassembly part 41 for top guidance when installing accessories, a connector 413 fixedly mounted on the outer wall of the disassembly part 41, a return spring 414 fixedly mounted on the outer wall of the connector 413 for buffering when squeezed, and a moving ring 415 fixedly mounted on the other end of the return spring 414 for squeezing the return spring 414.

[0033] Compared to Embodiment 2, the other end of the movable ring 415 is further fixedly installed with a push plate 416, and the push plate 416 is slidably connected with the disassembly part 41, which plays a role in connecting and pushing with the movable fixed ring 424.

[0034] Furthermore, a compression ring 417 is slidably disposed inside the main shaft 1, and the compression ring 417 is slidably connected to the L-shaped push rod 52, which serves to compress the push plate 416.

[0035] Furthermore, a fixing member 42 is fixedly installed on the inner wall of the disassembly part 41 to limit the movement. A second return spring 421 is fixedly installed inside the fixing member 42 to provide a compression buffer. A locking block 422 is fixedly installed at the other end of the second return spring 421 to clamp the accessory. A rolling ball 423 is slidably installed inside the fixing member 42 to roll, transport, and fix the accessory. A movable fixing ring 424 is slidably installed on the outer wall of the rolling ball 423, and the movable fixing ring 424 is slidably connected to the locking block 422 to fix and disassemble the accessory.

[0036] Meanwhile, the second return spring 421 is embedded and strictly confined inside the fixing member 42. The fixing member 42 is fixedly connected to the inner wall of the disassembly member 41, forming a double-closed constraint space. This directly counteracts the radial pull of centrifugal force on the spring, preventing spring displacement or dislodgement. Secondly, the force direction of the second return spring 421 is mainly axial extension and contraction along the center line of the main shaft 1, used to push the clamping block 422 to clamp the tool. The centrifugal force generated by the rotation of the tool is radially perpendicular to the center line of the main shaft 1 and outward. Since the force directions of the two are perpendicular, the centrifugal force will not directly act on the extension and contraction direction of the spring, but only slightly affects the fixing member 42. Radial pressure, and the rigid connection between the fixing part 42 and the disassembly part 41 can fully withstand this pressure, and it will not be transmitted to the spring. Finally, the two ends of the return spring 421 are fixedly connected to the inner wall of the fixing part 42 and the locking block 422 respectively. It is a two-end fixed structure, which further restricts the degree of freedom of the spring. Even if there is slight vibration or centrifugal force interference, the external force can be offset by the two fixed points to ensure that the spring is always in the preset installation position. In summary, through structural constraints, avoidance of force direction and optimization of fixing method, the risk of loosening of the return spring 421 when the tool rotates rapidly is fully avoided, ensuring its function of stably assisting in clamping the tool.

[0037] During use, when loading and unloading accessories, cylinder 2 drives spindle 1 to retract, moving the disassembly piece 41 towards the L-shaped push rod 52 until the compression ring 417 contacts the L-shaped push rod 52. This causes the L-shaped push rod 52 to compress the compression ring 417, which in turn compresses the push plate 416 and the moving ring 415, causing them to slide on the outer wall of the disassembly piece 41. Simultaneously, the push plate 416, carrying the moving fixing ring 424, moves inside the fixing piece 42 towards the guide piece 412. This causes the locking block 422 to compress the reset spring 421, causing it to retract inside the fixing piece 42. The rolling ball 423 also rolls and falls inside the fixing piece 42 along with the movement of the moving fixing ring 424, completing the disassembly of the accessory.

[0038] Simultaneously, the new accessory is directly inserted into the guide 412, the main shaft 1 moves in the opposite direction, the compression ring 417 disengages from the L-shaped push rod 52, the return spring 414 releases the compression, and the reaction force of the return spring 414 pushes the moving ring 415 back to its original position. At the same time, the push plate 416 also moves back into the fixing part 42 along with the moving fixing ring 424. The rolling ball 423 contacts the accessory, rolls again, and rubs against the accessory, causing the accessory to move into the mounting groove 11 inside the main shaft 1. At the same time, the locking block 422 is also clamped onto the surface of the accessory again under the reaction force of the return spring 421. The accessory is fixed once by the rolling ball 423, and the locking block 422 further strengthens the fixation. At the same time, the insertion of the accessory into the mounting groove 11 further enhances the fixing effect of the accessory, thereby realizing the initial loading and unloading operation of the accessory.

[0039] Example 2, refer to Figure 1 - Figure 9 This is the second embodiment of the present invention, which differs from the first embodiment in that: the rotating part 3 includes a limiting collar 31 slidably mounted on the outer wall of the main shaft 1, a rotating member 32 fixedly mounted on one side of the limiting collar 31, a driven wheel 33 fixedly mounted on the outer wall of the rotating member 32, a toothed belt 34 meshing on the outer wall of the driven wheel 33, a rotating wheel 35 meshing on the other end of the toothed belt 34, and a motor 36 fixedly mounted on the rotating wheel 35. The motor 36 drives the rotating wheel 35 to rotate, and the rotating wheel 35 drives the toothed belt 34 and the driven wheel 33 to rotate synchronously. At the same time as the driven wheel 33 rotates, the rotating member 32 also rotates together. The toothed belt 34, the driven wheel 33 and the rotating wheel 35 can also be configured as a chain plus gear drive structure or a belt pulley plus timing belt structure for driving rotation.

[0040] Furthermore, a rotating sleeve 39 is slidably installed inside the rotating component 32, and a retaining strip 38 is fixedly connected to the outer wall of the rotating sleeve 39. A rotating groove 37 is provided in the inner diameter of the rotating component 32, and the rotating groove 37 is slidably connected to the retaining strip 38. During the rotation of the rotating component 32, the rotating groove 37 restricts the retaining strip 38, so that the retaining strip 38 rotates with the rotating component 32, causing the rotating sleeve 39 to rotate together, thereby driving the main shaft 1 to rotate and adjust.

[0041] During use, while the main shaft 1 is being rotated and adjusted, the motor 36 drives the rotating wheel 35 to rotate. The rotating wheel 35 meshes with the toothed belt 34 on the outer wall and the driven wheel 33 to rotate. At the same time, the rotating component 32 rotates together with the driven wheel 33, and the rotating groove 37 restricts the retaining strip 38, so that the rotating sleeve 39 rotates with the rotating component 32, thereby rotating and adjusting the main shaft 1. The retaining strip 38 can slide inside the rotating groove 37, so that the rotating sleeve 39 can slide and rotate at the same time, enhancing the adjustability of the main shaft 1.

[0042] The remaining structure is the same as that in Example 1.

[0043] Example 3, referring to Figure 1 - Figure 10 This is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that the extension part 5 includes an extension member 51 slidably mounted on the outer wall of the output end of the main shaft 1, a retaining ring 53 fixedly mounted on the outer wall of the extension member 51, and an L-shaped push rod 52 fixedly mounted inside the extension member 51. The L-shaped push rod 52 is slidably connected to the main shaft 1. When the main shaft 1 is extended by the cylinder 2, the L-shaped push rod 52 moves inside the main shaft 1 until the L-shaped push rod 52 contacts the main shaft 1, thereby completing the first stage of extension. Then the extension member 51 begins to extend. When the retaining ring 53 inside the extension member 51 touches the retaining ring 55, the second stage of extension is completed.

[0044] Compared to Embodiment 1, the outer wall of the extension member 51 is further provided with a connecting shell 54, and the inner wall of the connecting shell 54 is fixedly provided with a retaining ring 2 55, which cooperates with the retaining ring 1 53. The connecting shell 54 provides a stabilizing effect on the extension member 51 when it extends, and at the same time, when the rotating sleeve rod 39 rotates, it causes the extension member 51 to rotate together with the main shaft 1.

[0045] During use, when the spindle 1 extends, the cylinder 2 drives the spindle 1 to move inside the rotating part 3. At the same time, the L-shaped push rod 52 moves inside the spindle 1. When the L-shaped push rod 52 contacts the spindle 1, the L-shaped push rod 52 is pushed by the spindle 1, so that the extension part 51 begins to move inside the connecting housing 54 until the first retaining ring 53 contacts the second retaining ring 55, at which point the extension is completed. At the same time, the spindle 1 can rotate under the drive of the rotating part 3, and the connecting housing 54 is connected to the rotating part 3 to cooperate with the rotation adjustment of the spindle 1.

[0046] The remaining structure is the same as that in Example 2.

[0047] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A spindle for a CNC boring and milling machine that facilitates the loading and unloading of accessories, comprising a spindle (1), characterized in that: It also includes a cylinder (2), a rotating part (3), a mounting part (4), and an extension part (5); One end of the main shaft (1) is fixedly connected to the piston output end of the cylinder (2), and the other end of the main shaft (1) is slidably connected to the extension (5). The extension (5) is fixedly installed with the mounting part (4), and the mounting part (4) is connected to the main shaft (1). The outer wall of the main shaft (1) is slidably connected to the rotating part (3). The mounting part (4) includes a disassembly part (41) fixedly mounted on the output end of the spindle (1), a guide part (412) fixedly mounted inside the disassembly part (41), a connector (413) fixedly mounted on the outer wall of the disassembly part (41), a return spring (414) fixedly mounted on the outer wall of the connector (413), and a moving ring (415) fixedly mounted on the other end of the return spring (414). A push plate (416) is fixedly installed at the other end of the movable ring (415), and the push plate (416) is slidably connected to the disassembly part (41); The main shaft (1) is internally slidably equipped with a compression ring (417), and the compression ring (417) is slidably connected to the L-shaped push rod (52); A fixing component (42) is fixedly installed on the inner wall of the disassembly component (41). A second reset spring (421) is fixedly installed inside the fixing component (42). A locking block (422) is fixedly installed at the other end of the second reset spring (421). A rolling ball (423) is slidably installed inside the fixing component (42). A movable fixing ring (424) is slidably installed on the outer wall of the rolling ball (423), and the movable fixing ring (424) is slidably connected to the locking block (422). The extension (5) includes an extension (51) slidably mounted on the outer wall of the output end of the main spindle (1), a retaining ring (53) fixedly mounted on the outer wall of the extension (51), and an L-shaped push rod (52) fixedly mounted inside the extension (51), and the L-shaped push rod (52) is slidably connected to the main spindle (1). The outer wall of the extension (51) is slidably provided with a connecting shell (54), and the inner wall of the connecting shell (54) is fixedly provided with a retaining ring two (55), and the retaining ring two (55) cooperates with the retaining ring one (53).

2. The spindle for a CNC boring and milling machine as described in claim 1, which facilitates the loading and unloading of accessories, is characterized in that: The output end of the spindle (1) is provided with a mounting groove (11), and the mounting groove (11) is fixedly connected to the mounting part (4).

3. The spindle for a CNC boring and milling machine that facilitates the loading and unloading of accessories according to claim 2, characterized in that: The rotating part (3) includes a limiting collar (31) slidably mounted on the outer wall of the main shaft (1), a rotating part (32) fixedly mounted on one side of the limiting collar (31), a driven wheel (33) fixedly mounted on the outer wall of the rotating part (32), a toothed belt (34) meshing on the outer wall of the driven wheel (33), a rotating wheel (35) meshing on the other end of the toothed belt (34), and a motor (36) fixedly mounted on the rotating wheel (35).

4. The spindle for a CNC boring and milling machine that facilitates the loading and unloading of accessories according to claim 3, characterized in that: A rotating sleeve rod (39) is slidably installed inside the rotating part (32), and a retaining strip (38) is fixedly connected to the outer wall of the rotating sleeve rod (39).

5. The spindle for a CNC boring and milling machine according to claim 4, characterized in that: The inner wall of the rotating part (32) is provided with a rotating groove (37), and the rotating groove (37) is slidably connected to the retaining strip (38).

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