Adjusting mechanism of nose end of main shaft of numerical control machine tool

Abstract

The utility model discloses a kind of adjusting mechanism of nose end of numerical control machine tool spindle, belong to numerical control machine tool technical field, including main shaft and the nose end movably connected below main shaft, the mobile groove is opened in the main shaft, and mobile groove movably connects with the connecting rod fixedly connected with nose end, the outer wall of the nose end is fixed with positioning ring, the outer wall of the main shaft is fixed with protective cover, the outer wall of the protective cover is fixed with fixed ring, adjusting mechanism is provided in the fixed ring, the inner wall of the protective cover is fixed with locating block, adjusting screw is rotatably connected in the locating block, the outer wall of the adjusting screw is threadedly connected with the adjusting sleeve fixedly connected with positioning ring. The adjusting mechanism of nose end of numerical control machine tool spindle, can be flexibly adjusted according to actual processing requirement, the position of nose end, meet different processing requirement.

Description

Technical Field

[0001] This utility model belongs to the field of CNC machine tool technology, specifically relating to an adjustment mechanism for the nose end of a CNC machine tool spindle. Background Technology

[0002] In the field of CNC machine tool machining, the spindle nose, as the core component connecting the spindle and the cutting tool (or workpiece fixture), directly affects machining efficiency, workpiece accuracy, and equipment adaptability due to its positional accuracy and adjustment flexibility. Traditional CNC machine tool spindle noses often employ fixed connection structures (such as welding, integrated casting, or rigid bolt locking), resulting in poor machining adaptability. When faced with workpieces of different thicknesses and machining depths, or when changing cutting tools of different lengths, the fixed nose cannot adjust its extension distance, requiring frequent replacement of spindle assemblies, tool adapters, or adjustments to the workpiece clamping position. This leads to extended machining preparation time and reduced production efficiency. Utility Model Content

[0003] The purpose of this utility model is to provide an adjustment mechanism for the spindle nose of a CNC machine tool, so as to solve the problem mentioned in the background art that the spindle nose of traditional CNC machine tools mostly adopts a fixed connection structure, which has poor processing adaptability.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an adjustment mechanism for the nose end of a CNC machine tool spindle, comprising a spindle and a nose end movably connected below the spindle. A movable groove is provided inside the spindle, and a connecting rod fixedly connected to the nose end is movably connected within the movable groove. A positioning ring is fixed to the outer wall of the nose end. A protective cover is fixed to the outer wall of the spindle. A fixing ring is fixed to the outer wall of the protective cover. An adjustment mechanism is provided within the fixing ring. A positioning block is fixed to the inner wall of the protective cover. An adjusting screw is rotatably connected within the positioning block. An adjusting sleeve fixedly connected to the positioning ring is threaded to the outer wall of the adjusting screw.

[0005] In a further embodiment, the adjustment mechanism consists of a handle and a connecting column. The handle is rotatably connected to the positioning ring, and the connecting column is rotatably connected to the protective cover via a bearing. An active bevel gear is fixed to the outer wall of the connecting column.

[0006] In a further embodiment, the upper half of the outer wall of the adjusting screw is fixed with a driven bevel gear that meshes with the driving bevel gear, and the upper half of the outer wall of the adjusting sleeve is fixed with a limit ring.

[0007] In a further embodiment, a limiting block is fixed to the lower half of the inner wall of the protective cover, and the limiting block has a through hole for the adjustment sleeve to move.

[0008] In a further embodiment, the surface of the positioning ring is provided with a threaded hole, and a fixing bolt is threaded into the threaded hole.

[0009] The technical effects and advantages of this utility model are as follows:

[0010] The adjustment mechanism at the nose of the CNC machine tool spindle, through the setting of components such as the adjustment mechanism, adjustment screw, adjustment sleeve and driven bevel gear, can achieve precise micro-adjustment in the vertical direction of the nose, adapting to the machining depth requirements of workpieces of different thicknesses and the installation and adaptation of tools of different lengths, without the need to replace the core components of the spindle, greatly improving the processing range and versatility of the equipment;

[0011] The rectangular connecting rod cooperates with the spindle moving groove to effectively limit the radial wobble of the nose end and avoid deviation during adjustment. The limiting ring on the adjusting sleeve and the limiting block inside the protective cover work together to precisely control the maximum travel of the nose end, prevent the connecting rod from disengaging from the spindle, and ensure operational safety. The fixing bolt on the positioning ring can lock the handle position after adjustment to prevent the transmission components from loosening due to processing vibration, ensure the long-term stability of the nose end position, and improve the consistency of processing accuracy.

[0012] The protective cover on the outer wall of the spindle can effectively prevent metal chips and cutting fluid from entering the core transmission components such as the adjusting screw and bevel gear, reducing the risk of component corrosion and jamming. The adjustment mechanism at the nose end of the CNC machine tool spindle can flexibly adjust the position of the nose end according to actual processing needs to meet different processing requirements. Attached Figure Description

[0013] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the connecting rod and nose end of this utility model;

[0016] Figure 3 This is a schematic diagram of the adjustment mechanism of this utility model;

[0017] Figure 4 This is a schematic diagram of the adjusting screw and adjusting sleeve of this utility model.

[0018] In the diagram: 1. Main shaft; 2. Connecting rod; 3. Nose end; 4. Positioning ring; 5. Protective cover; 6. Fixing ring; 7. Handle; 8. Connecting column; 9. Driving bevel gear; 10. Fixing bolt; 11. Positioning block; 12. Adjusting screw; 13. Adjusting sleeve; 14. Driven bevel gear; 15. Limiting ring; 16. Limiting block. Detailed Implementation

[0019] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0020] Unless otherwise defined, the directions mentioned herein, such as up, down, left, right, front, back, inside, and outside, are based on the directions shown in the figures of this utility model, and are explained here together.

[0021] This utility model provides, for example Figure 1-4 The adjustment mechanism of the nose end of a CNC machine tool spindle shown includes a spindle 1 and a nose end 3 movably connected to the lower part of the spindle 1. A moving groove is provided in the spindle 1, and a connecting rod 2 fixedly connected to the nose end 3 is movably connected in the moving groove. The connecting rod 2 has a cuboid structure, which can prevent the connecting rod 2 from shaking in the spindle 1 and causing the nose end 3 to shift. A positioning ring 4 is fixed to the outer wall of the nose end 3. A protective cover 5 is fixed to the outer wall of the spindle 1. A through groove for the connecting rod 2 to move is provided at the bottom of the protective cover 5. A fixing ring 6 is fixed to the outer wall of the protective cover 5, and an adjustment mechanism is provided in the fixing ring 6.

[0022] The adjustment mechanism consists of a handle 7 and a connecting column 8. The handle 7 is rotatably connected to the positioning ring 4. The connecting column 8 is rotatably connected to the protective cover 5 through a bearing. The outer wall of the connecting column 8 is fixed with a drive bevel gear 9. The surface of the positioning ring 4 is provided with a threaded hole. A fixing bolt 10 is threaded into the threaded hole. By tightening the fixing bolt 10, the fixing bolt 10 is made to fit tightly against the surface of the handle 7, which can fix the position of the handle 7 and prevent the handle 7 from rotating accidentally.

[0023] A positioning block 11 is fixed to the inner wall of the protective cover 5. An adjusting screw 12 is rotatably connected to the positioning block 11 via a bearing to ensure the stability of the adjusting screw 12. An adjusting sleeve 13, which is fixedly connected to the positioning ring 4, is threaded to the outer wall of the adjusting screw 12. A guide hole for the adjusting sleeve 13 to move is provided at the bottom of the protective cover 5. A driven bevel gear 14 that meshes with the driving bevel gear 9 is fixed to the upper half of the outer wall of the adjusting screw 12. The connecting column 8 and the driving bevel gear 9 are rotated by the handle 7. The driving bevel gear 9 drives the adjusting screw 12 to rotate through the driven bevel gear 14, thereby driving the adjusting sleeve 13. The position of the positioning ring 4 and the nose end 3 is adjusted by moving the connecting rod 2, which is a cuboid structure, thus restricting the movement path of the adjusting sleeve 13 and ensuring that the nose end 3 can only move vertically. The upper half of the outer wall of the adjusting sleeve 13 is fixed with a limit ring 15, and the lower half of the inner wall of the protective cover 5 is fixed with a limit block 16. The limit block 16 has a through hole for the adjusting sleeve 13 to move. The setting of the limit block 16 can block the limit ring 15 in the upper half of the adjusting sleeve 13, thereby restricting the movement distance of the adjusting sleeve 13 and the connecting rod 2 and preventing the connecting rod 2 from separating from the main shaft 1.

[0024] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0025] In the description of this utility model, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] Working principle:

[0027] When using the adjustment mechanism of the spindle nose end of this CNC machine tool, first loosen the fixing bolt 10 on the positioning ring 4 to release the lock on the adjustment mechanism handle 7, turn the handle 7, and drive the connecting column 8 fixedly connected to it to rotate synchronously. The active bevel gear 9 on the outer wall of the connecting column 8 rotates accordingly, and drives the driven bevel gear 14 on the adjustment screw 12 to rotate through gear meshing. Since the adjustment screw 12 is rotatably connected to the protective cover 5 through the positioning block 11 (position fixed), its rotational motion is converted into the vertical movement of the adjustment sleeve 13 through thread transmission. The adjustment sleeve 13 is fixedly connected to the positioning ring 4 on the outer wall of the nose end 3, so it can drive the nose end 3 and the connecting rod 2 connected to it to move up and down synchronously along the moving groove in the spindle 1 to realize the adjustment of the position of the nose end 3. During the adjustment process, the cuboid connecting rod 2 can limit the radial displacement of the nose end 3 to ensure the adjustment accuracy. When the limiting ring 15 on the adjustment sleeve 13 contacts the limiting block 16 in the protective cover 5, the nose end 3 reaches the maximum movement stroke to prevent the connecting rod 2 from disengaging from the spindle 1.

[0028] After adjustment, tighten the fixing bolt 10 so that the end of the bolt is close to the surface of the handle 7, locking the position of the handle 7 and the entire transmission mechanism to prevent the nose 3 from shifting due to processing vibration. The protective cover 5 always protects the internal transmission components and prevents impurities from entering and affecting the operation of the mechanism.

[0029] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustment mechanism for the nose end of a CNC machine tool spindle, comprising a spindle (1) and a nose end (3) movably connected below the spindle (1), characterized in that: The main shaft (1) has a movable groove, and a connecting rod (2) fixedly connected to the nose end (3) is movably connected in the movable groove. A positioning ring (4) is fixed on the outer wall of the nose end (3). A protective cover (5) is fixed on the outer wall of the main shaft (1). A fixing ring (6) is fixed on the outer wall of the protective cover (5). An adjustment mechanism is provided in the fixing ring (6). A positioning block (11) is fixed on the inner wall of the protective cover (5). An adjusting screw (12) is rotatably connected in the positioning block (11). An adjusting sleeve (13) fixedly connected to the positioning ring (4) is threaded on the outer wall of the adjusting screw (12).

2. The adjustment mechanism for the nose end of a CNC machine tool spindle according to claim 1, characterized in that: The adjustment mechanism consists of a handle (7) and a connecting column (8). The handle (7) is rotatably connected to the positioning ring (4). The connecting column (8) is rotatably connected to the protective cover (5) through a bearing. The outer wall of the connecting column (8) is fixed with an active bevel gear (9).

3. The adjustment mechanism for the nose end of a CNC machine tool spindle according to claim 2, characterized in that: The upper half of the adjusting screw (12) is fixed with a driven bevel gear (14) that meshes with the driving bevel gear (9), and the upper half of the adjusting sleeve (13) is fixed with a limit ring (15).

4. The adjustment mechanism for the nose end of a CNC machine tool spindle according to claim 1, characterized in that: The lower half of the protective cover (5) is fixed with a limiting block (16), and the limiting block (16) has a through hole for the adjustment sleeve (13) to move.

5. The adjustment mechanism for the nose end of a CNC machine tool spindle according to claim 1, characterized in that: The surface of the positioning ring (4) is provided with a threaded hole, and a fixing bolt (10) is threadedly connected inside the threaded hole.

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