Milling machine spindle high and low speed fast adjusting mechanism

Abstract

The utility model discloses a milling machine main shaft high and low speed fast adjusting mechanism which comprises a driving component which is in belt transmission with a milling machine main shaft. The driving part is fixedly connected with the swing seat, one end of the swing seat is hinged with the milling machine frame, and the other end is fixedly connected with the milling machine frame; a swinging groove hole is formed in the swinging seat; and the same sides of the swinging seat and the milling machine frame are connected with each other through a locking mechanism. By arranging the locking mechanism, the influence of loosening of the fastener caused by resonance during operation can be guaranteed, locking or loosening can be achieved by screwing the locking threaded pipe, and operation is easy and convenient. The structures do not greatly transform original equipment, and continuous use of the original equipment is not affected. A plurality of belts can be placed in the annular groove at a time, a driving component and a milling machine main shaft do not need to be disassembled and assembled when each belt is replaced, after the original belt is cut off, a new belt below is pulled out and directly wound on the belt pulley, and inconvenience caused by repeated disassembly and assembly is reduced.

Description

Technical Field

[0001] This utility model relates to the field of material receiving equipment technology, and in particular to a high and low speed quick adjustment mechanism for a milling machine spindle. Background Technology

[0002] A milling machine is a machine tool that uses milling cutters to machine various surfaces of a workpiece. It can machine planes, grooves, as well as various curved surfaces, gears, etc. On a milling machine, the spindle is the key component that drives the rotation of the milling cutter, and it can perform milling, drilling, and boring on the workpiece.

[0003] In some models, the main shaft is connected to the drive shaft of the drive motor via a belt. In order to achieve high and low speed adjustment, the drive shaft is equipped with two drive pulleys of different diameters that are coaxially driven. The belt is connected to the different drive pulleys to achieve high and low speed adjustment.

[0004] Currently, adjusting high and low speeds requires manually removing the belt and placing it on a drive pulley of a different diameter. This process is extremely cumbersome and inconvenient because the spindle and drive motor are located inside the milling machine, where internal space is very limited. Given the precision requirements, the positions of the spindle and drive motor must be carefully checked when replacing the belt. If inaccurate positioning is detected during testing after replacement, multiple adjustments are necessary. This operation involves removing and installing multiple fastening bolts, and the drive motor is heavy. Combined with the confined space inside the milling machine, it's easy for the belt to slip and cause damage to parts or hand injuries. This requires multiple workers to coordinate and consumes a significant amount of time.

[0005] Therefore, it is necessary to make certain modifications to the existing equipment to design a mechanism that can quickly adjust the high and low speeds of the milling machine spindle, which will facilitate worker operation and improve work efficiency. Utility Model Content

[0006] This invention provides a high / low speed quick-adjustment mechanism for a milling machine spindle to solve the technical problems mentioned in the background section. It enables quick belt removal and installation without requiring complete disassembly of the drive motor, greatly facilitating manual operation by workers.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] A high / low speed quick-adjustment mechanism for a milling machine spindle includes a drive component, wherein the drive end of the drive component is belt-driven to the milling machine spindle.

[0009] The driving component is fixedly connected to the swing seat, one end of the swing seat is hinged to the milling machine frame, and the other end is fastened to the milling machine frame by a fastener; the swing seat is provided with a swing slot corresponding to the fastener;

[0010] The swing seat and the milling machine frame are connected to each other on the same side by a locking mechanism.

[0011] Preferably, the fastener has several pry holes on its circumferential surface at the screwing end.

[0012] Preferably, the locking mechanism includes a locking wire tube, with internal threads corresponding to each other in opposite directions at both axial ends of the locking wire tube, and a lead screw connected to each of the two lead screws, with elbows at the opposite ends of the two lead screws; the two elbows are respectively inserted into fastening holes one and two on the same side of the swing seat and the milling machine frame.

[0013] Preferably, the circumferential surface of the locking wire tube is provided with several pry holes.

[0014] Preferably, the end of the swing seat away from the hinge end is also provided with a pry hole three.

[0015] Preferably, the top end of the fastener is adapted to be inserted into the slot at the bottom end of the pry bar, and the top end of the pry bar is provided with a pry head end.

[0016] Preferably, the diameters of the first pry hole, the second pry hole, and the third pry hole are all the same as the diameter of the pry head end.

[0017] Preferably, the milling machine frame is provided with an annular groove for placing the belt, and the annular groove surrounds the drive end of the drive component and the milling machine spindle.

[0018] Preferably, one side of the annular groove is provided with a flared portion.

[0019] Preferably, the contact area between the swing seat and the milling machine frame is provided with a scale line near the swing slot hole.

[0020] Due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows:

[0021] This structure can be modified based on existing equipment and is easy to manufacture. The swing seat can swing horizontally on the milling machine stand. When the fasteners are loosened, the drive component can approach the milling machine spindle, and the belt can be released for easy disassembly and assembly.

[0022] The locking mechanism effectively prevents fasteners from loosening due to resonance during operation. Both locking holes 1 and 2 are fitted with elbows, which are then connected by locking threads to move closer together or further apart. Tightening or loosening is achieved by simply turning the locking threads, making operation simple. Most importantly, these structures require minimal modification to the existing equipment and do not affect its continued use.

[0023] The annular groove can hold multiple belts at once, and the belts are wrapped around the outside of the milling machine spindle and the drive end of the drive component. There is no need to disassemble and reassemble the drive component and the milling machine spindle when replacing each belt. After the original belt is cut, the new belt below can be pulled out and directly wound around the pulley, reducing the inconvenience of repeated disassembly and reassembly. Attached Figure Description

[0024] Figure 1 This is a schematic front view of the structure of this utility model;

[0025] Figure 2 Top view of the structure of this utility model Figure 1 ;

[0026] Figure 3 Top view of the structure of this utility model Figure 2 ;

[0027] Figure 4 for Figure 3 A schematic diagram of the changing state structure;

[0028] Figure 5 This is a three-dimensional schematic diagram of the fastener structure in this utility model;

[0029] Figure 6 This is a schematic front view of the locking mechanism in this utility model;

[0030] Figure 7 This is a three-dimensional schematic diagram of the pry bar structure in this utility model;

[0031] Figure 8 This is a top view illustrating the structure of the milling machine frame in this utility model.

[0032] In the picture:

[0033] 100. Milling machine frame; 101. Annular groove; 1012. Flared opening; 102. Fastening hole 2;

[0034] 200, drive component; 201, swing seat; 2011, fastening hole one; 202, pry hole three; 203, scale line; 204, swing groove hole; 205, hinge end; 206, drive pulley.

[0035] 300. Milling machine spindle; 301. Driven pulley;

[0036] 4. Belt;

[0037] 500, Locking mechanism; 501, Locking screw tube; 502, Pry hole two; 503, Screw; 5031, Elbow end;

[0038] 600, Fastener 601, Pry Hole 1;

[0039] 701, pry bar; 702, pry head end; 703, slot. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this utility model clearer, the following is a summary description. Figure 1 To be continued Figure 8 The present invention will be further described in detail with reference to embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the scope of the present invention. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the present invention.

[0041] This embodiment discloses a high / low speed quick-adjustment mechanism for a milling machine spindle, including a drive component 200 (in practice, the drive component 200 is preferably a drive motor), which is mostly arranged vertically, that is, the drive end faces downward. The drive end of the drive component 200 is connected to the milling machine spindle 300 by a belt 4 for mutual transmission.

[0042] The drive unit and the milling machine spindle are respectively equipped with two coaxial transmission wheels of different diameters; the transmission wheel with a larger diameter on the drive end of the drive unit and the transmission wheel with a smaller diameter on the milling machine spindle are mutually belt driven to achieve high-speed operation (e.g., Figure 3 (As shown).

[0043] Alternatively, the drive wheel with a smaller diameter at the drive end of the drive component can be belt-driven with the drive wheel with a larger diameter on the milling machine spindle to achieve low-speed operation (e.g., Figure 2 As shown in the figure, this structure is consistent with the existing equipment structure.

[0044] refer to Figures 2 to 4 The drive component 200 is fixedly connected to the swing seat 201. One end of the swing seat 201 is hinged to the milling machine frame 100, and the other end is fastened to the milling machine frame 100 via a fastener 600 (in practice, a screw with external threads is used). When the fastener 600 is loosened, the swing seat 201 can swing with the hinged end 205 as the center, thereby tightening and loosening the belt 4. The swing seat 201 is provided with a swing slot 204 corresponding to the fastener 600, and the curvature of the swing slot 204 matches the swing trajectory of the swing seat 201. When the swing seat 201 swings, the fastener 600 can be fixed in the corresponding position on the swing slot 204, and after tightening, the tension of the belt 4 can be adjusted (e.g., ...). Figure 1 (In the direction indicated by the arrow). In the past, the structure only had fastening holes. When belt 4 became loose to a certain extent, the equipment had to be disassembled and the belt replaced. The tightness of belt 4 could not be adjusted accordingly.

[0045] Among them, the fastener 600 is not a conventional screw. Its screw-in end has several pry holes 601 on its circumferential surface, instead of the common external hexagonal or internal hexagonal screws.

[0046] The swing seat 201 and the milling machine frame 100 are connected to each other on the same side by a locking mechanism 500. It is best to choose the side away from the hinge end 205 so as to effectively achieve the positioning connection between the two.

[0047] Reference Figure 1 and Figure 6 Specifically, the locking mechanism 500 includes a locking thread tube 501. The locking thread tube 501 has internal threads at both axial ends that are opposite to each other. Each axial end of the locking thread tube 501 is connected to a lead screw 503. When the locking thread tube 501 is rotated axially, the lead screws 503 at both ends can move axially closer together and axially further apart in opposite directions. The opposite ends of the two lead screws 503 are respectively provided with elbows 5031, which are respectively inserted into fastening holes 1 2011 and 2 102 on the same side of the swing seat 201 and the milling machine frame 100. When the locking thread tube 501 is rotated axially, the insertion of the elbows 5031 into the fastening holes achieves locking and positioning between the swing seat 201 and the milling machine frame 100. Even if resonance during long-term operation causes the fastener 600 to loosen, it will not cause the swing seat 201 to loosen, providing greater security.

[0048] Furthermore, the circumferential surface of the locking wire tube 501 is provided with several pry holes 502, and the locking wire tube 501 can be rotated axially using the pry head end 702 of the pry bar 701 or other rod-shaped tools.

[0049] To facilitate the application of force to the swing seat for swinging, the end of the swing seat 201 away from the hinge end 205 is also provided with a pry hole 202, which can be used with a pry bar 701 or other rod-shaped tools to facilitate the movement of the swing seat 201 by lever principle.

[0050] Preferably, the top end of the fastener 600 is adapted to be inserted into the slot 703 at the bottom end of the pry bar 701. The top end of the pry bar 701 is provided with a pry head end 702. This is adopted to facilitate worker operation, as the pry bar 701 is always seated at the screwing end of the fastener 600 (e.g., Figure 1 As shown in the image, the lever 701 is always placed inside the equipment, eliminating the need for workers to carry any tools. They can simply open the outer cover and remove the lever 701 to operate it. After use, it is placed back on the fastener, making it very convenient. Traditional structures, on the other hand, require workers to find suitable wrenches and other tools before operation, and the limited internal space of the outer cover further complicates the process.

[0051] Corresponding to the above structure, the diameters of the first pry hole 601, the second pry hole 502, and the third pry hole 202 are all the same as the diameter of the pry head end 702. This method is adopted to facilitate worker operation; one pry bar 701 can be inserted into each of the three pry holes, and after the operation is completed, it is placed on the fastener 600. Workers do not need to carry any tools beforehand. Moreover, modifying these structures is very convenient; drilling the pry holes and milling the pry bar 701 are also convenient, and all can be modified independently. The modification to the existing equipment is minimal and does not affect the continued use of the original equipment.

[0052] Reference Figure 8 In this embodiment, to facilitate the disassembly and assembly of the belts 4, the milling machine frame 100 is provided with an annular groove 101 for placing the belts 4. Multiple belts 4 can be placed here simultaneously, and the annular groove 101 surrounds the drive end of the drive component 200 and the milling machine spindle 300. When replacing a belt 4, multiple belts 4 can be inserted at once, similar to loading ammunition. These temporarily stored belts 4 surround the drive component 200 and the milling machine spindle 300. After the first belt 4 is removed, only the lower belt 4 needs to be taken out and placed on the transmission wheel. The tensioning swing seat 201 alone is sufficient for quick belt replacement. Previously, each time a belt 4 was replaced, the drive component and the milling machine spindle needed to be disassembled to insert the belt, which was very inconvenient. This structure allows multiple belts 4 to be inserted at once, one of which can be installed for transmission connection, while the others are temporarily stored in the annular groove 101. This eliminates the need to disassemble and assemble the drive component and the milling machine spindle each time, making replacement very convenient and saving a significant amount of time.

[0053] Based on the above structure, the annular groove 101 has a flared portion 1012 on the side near the driving end of the driving component 200, which not only facilitates the storage and placement of the belt 4, but also provides space for workers to access it. The flared portion 1012 can be arranged in a position that is easy to operate (e.g., Figure 8 (As shown).

[0054] Preferably, the contact area between the swing seat 201 and the milling machine frame 100 is provided with a scale line 203 near the swing slot 204, so that the worker can intuitively judge the relative position of the swing seat 201 and thus determine the tension of the belt 4.

[0055] Due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows:

[0056] This structure can be modified based on existing equipment and is easy to manufacture. The swing seat can swing horizontally on the milling machine stand. When the fasteners are loosened, the drive component can approach the milling machine spindle, and the belt can be released for easy disassembly and assembly.

[0057] The locking mechanism effectively prevents fasteners from loosening due to resonance during operation. Both locking holes 1 and 2 are fitted with elbows, which are then connected by locking threads to move closer together or further apart. Tightening or loosening is achieved by simply turning the locking threads, making operation simple. Most importantly, these structures require minimal modification to the existing equipment and do not affect its continued use.

[0058] The annular groove can hold multiple belts at once, and the belts are wrapped around the outside of the milling machine spindle and the drive end of the drive component. There is no need to disassemble and reassemble the drive component and the milling machine spindle when replacing each belt. After the original belt is cut, the new belt below can be pulled out and directly wound around the pulley, reducing the inconvenience of repeated disassembly and reassembly.

[0059] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A high and low speed quick adjustment mechanism for a milling machine spindle, comprising a drive component (200), wherein the drive end of the drive component (200) is driven by a belt (4) to the milling machine spindle (300); Its features are: The drive component (200) is fixedly connected to the swing seat (201). One end of the swing seat (201) is hinged to the milling machine frame (100), and the other end is fastened to the milling machine frame (100) via a fastener (600). The swing seat (201) is provided with a swing slot (204) corresponding to the fastener (600). The swing seat (201) and the milling machine frame (100) are connected to each other on the same side by a locking mechanism (500).

2. The milling machine spindle high / low speed rapid adjustment mechanism according to claim 1, characterized in that: The fastener (600) has several pry holes (601) on its circumferential surface at the screw end.

3. The milling machine spindle high / low speed rapid adjustment mechanism according to claim 2, characterized in that: The locking mechanism (500) includes a locking wire tube (501), with internal threads corresponding to each other in opposite directions at both axial ends of the locking wire tube (501). The locking wire tube (501) is connected to a lead screw (503) at both axial ends, and the two lead screws (503) are respectively provided with elbow ends (5031) at their opposite ends. The two elbow ends (5031) are respectively inserted into fastening holes one (2011) and fastening holes two (102) provided on the same side of the swing seat (201) and the milling machine frame (100).

4. The milling machine spindle high / low speed rapid adjustment mechanism according to claim 3, characterized in that: The locking wire tube (501) has several pry holes (502) on its circumference.

5. The milling machine spindle high / low speed rapid adjustment mechanism according to claim 4, characterized in that: The swing seat (201) is also provided with a pry hole three (202) at the end away from the hinge end (205).

6. The high / low speed rapid adjustment mechanism for milling machine spindles according to claim 5, characterized in that: The top end of the fastener (600) is adapted to be inserted into the slot (703) at the bottom end of the pry bar (701), and the top end of the pry bar (701) is provided with a pry head end (702).

7. The milling machine spindle high / low speed rapid adjustment mechanism according to claim 6, characterized in that: The diameters of the first pry hole (601), the second pry hole (502), and the third pry hole (202) are all the same as the diameter of the pry head end (702).

8. The milling machine spindle high / low speed rapid adjustment mechanism according to claim 1, characterized in that: The milling machine frame (100) is provided with an annular groove (101) for placing the belt (4), and the annular groove (101) surrounds the drive end of the drive component (200) and the milling machine spindle (300).

9. The milling machine spindle high / low speed rapid adjustment mechanism according to claim 8, characterized in that: The annular groove (101) has a flared section (1012) on one side.

10. The milling machine spindle high / low speed rapid adjustment mechanism according to claim 1, characterized in that: The oscillating seat (201) and the milling machine frame (100) are provided with a scale line (203) near the oscillating slot (204).

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