A high-speed spindle connection structure for CNC engraving and milling machines

Abstract

This utility model discloses a high-speed spindle connection structure for a CNC engraving and milling machine, including a fixed base. A connecting base is rotatably connected to the fixed base via bearings. A spindle is inserted into the connecting base. The structure also includes a fixing component. The fixing component includes a sliding base, pressing plates, locking blocks, and locking slots. The sliding base is slidably connected to the left side of the connecting base. Evenly distributed pressing plates are rotatably connected to the left end of the sliding base. Evenly distributed locking blocks are fixedly connected to the side of the pressing plates near the center of the sliding base. Evenly distributed locking slots are formed on the outer surface of the spindle, and the locking blocks are fitted into the locking slots. The fixing component also includes bolts, which are rotatably connected to the inside of the connecting base. The left end of the bolt is threadedly connected to the sliding base. This utility model allows for spindle assembly and disassembly simply by rotating the bolts, simplifying the spindle assembly and disassembly process and improving the efficiency of spindle maintenance.

Description

Technical Field

[0001] This utility model relates to the field of CNC engraving and milling machine technology, specifically to a high-speed spindle connection structure for a CNC engraving and milling machine. Background Technology

[0002] CNC engraving and milling machines are high-precision CNC machine tools, mainly used for fine engraving and milling of materials such as metal, wood, and plastic. They are widely used in mold manufacturing, handicraft processing and other fields. In order to ensure the normal use of the spindle, a connecting structure is needed to reliably fix the spindle.

[0003] In the prior art, patent publication number CN211840159U discloses a spindle box for a gantry milling machine, including a spindle box slidably connected to the gantry of the milling machine. The spindle box includes a hollowed-out motor chamber and a spindle chamber, and a guide rail mounting surface disposed on the back of the spindle box. The outer wall of the spindle chamber is symmetrically provided with a plurality of first reinforcing ribs, and the inner wall of the spindle chamber and the guide rail mounting surface are provided with second reinforcing ribs. The two sides of the motor chamber are symmetrically provided with reinforcing frames. A spindle servo motor is fixedly mounted in the motor chamber by a spindle adapter plate and screws. The output end of the spindle servo motor is drivenly connected to a spindle. The spindle is rotatably connected to the spindle chamber by a spindle mounting flange and screws.

[0004] The existing spindle housing of the gantry milling machine has the following disadvantages: it is installed and fixed by mounting flanges and screws, and when replacing the spindle, multiple sets of screws need to be disassembled and reassembled, making the operation cumbersome. Therefore, a high-speed spindle connection structure for CNC milling machines is proposed. Utility Model Content

[0005] The technical problem this invention aims to solve is to overcome existing defects and provide a high-speed spindle connection structure for CNC engraving and milling machines. Through a fixing component, bolts drive the sliding seat to move, which in turn drives the extrusion plate to move. The extrusion block, in conjunction with the spindle, provides axial positioning of the spindle. Furthermore, the positioning block and positioning groove lock the spindle securely, ensuring a rigid and stable connection of the spindle. The spindle can be disassembled and assembled simply by rotating the bolts, simplifying the disassembly and assembly process and improving the efficiency of spindle maintenance. This effectively solves the problems in the background technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-speed spindle connection structure for a CNC engraving and milling machine, including a fixed base, a connecting base rotatably connected inside the fixed base via a bearing, a spindle being inserted into the connecting base, and a fixing component; The fixing component includes a sliding seat, an extrusion plate, a locking block, and a locking groove. The sliding seat is slidably connected to the inside left side of the connecting seat. The left end of the sliding seat is rotatably connected to an evenly distributed extrusion plate. The side of the extrusion plate near the middle of the sliding seat is fixedly connected to an evenly distributed locking block. The outer surface of the main shaft is provided with an evenly distributed locking groove. The locking block and the locking groove are fitted together for installation.

[0007] Furthermore, the fixing component also includes a bolt, which is rotatably connected to the inside of the connecting seat. The left end of the bolt is threadedly connected to the sliding seat, driving the sliding seat to move.

[0008] Furthermore, the fixing assembly also includes pressing blocks, which are all fixedly connected to the left side of the sliding seat. By pressing the pressing plates, the pressing plates are locked to the main shaft.

[0009] Furthermore, the connector is internally fixed with evenly distributed magnets to prevent the extrusion plate from obstructing the insertion position of the spindle after the spindle is disassembled.

[0010] Furthermore, the connecting seat has uniformly distributed positioning blocks fixedly connected to the inner left side, and the outer surface of the spindle has uniformly distributed positioning grooves on the right side. The positioning blocks are all slidably connected in the laterally adjacent positioning grooves to limit the spindle.

[0011] Furthermore, a flange is fixedly connected to the right end of the connector to facilitate connection with an external drive device.

[0012] Furthermore, the lower surface of the fixing base is provided with evenly distributed connecting holes to facilitate the fixing and installation of the fixing base.

[0013] Compared with the prior art, the beneficial effects of this utility model are: By using a fixed assembly, the bolts drive the sliding seat to move, which in turn drives the extrusion plate to move. This, in conjunction with the extrusion block, axially limits the spindle. Then, with the help of the positioning block and positioning groove, the spindle is locked tightly. This ensures a rigid and stable connection of the spindle, while allowing the spindle to be disassembled and assembled simply by rotating the bolts. This simplifies the disassembly and assembly process of the spindle and improves the efficiency of spindle maintenance. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is an enlarged structural diagram of point A in this utility model; Figure 4 This is a schematic diagram of the exploded structure of the fixing component of this utility model.

[0015] In the diagram: 1. Fixed seat, 2. Bearing, 3. Connecting seat, 4. Main shaft, 5. Fixed assembly, 51. Sliding seat, 52. Extrusion plate, 53. Clamping block, 54. Clamping slot, 55. Bolt, 56. Extrusion block, 6. Magnet, 7. Positioning block, 8. Positioning groove, 9. Flange. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-4 This embodiment provides a technical solution: a high-speed spindle connection structure for a CNC engraving and milling machine, including a fixed base 1. A connecting base 3 is rotatably connected inside the fixed base 1 via a bearing 2. A spindle 4 is inserted into the connecting base 3. Evenly distributed positioning blocks 7 are fixedly connected to the left side of the connecting base 3. Evenly distributed positioning grooves 8 are opened on the right side of the outer surface of the spindle 4. The positioning blocks 7 are all slidably connected in the laterally adjacent positioning grooves 8. The positioning grooves 8 are laterally aligned with the positioning blocks 7, and the spindle 4 is pushed to the right so that the right end of the spindle 4 is inserted into the connecting base 3. A flange 9 is fixedly connected to the right end of the connecting base 3, and the flange 9 is used to fix and connect to an external driving device. Evenly distributed connection holes are opened on the lower surface of the fixed base 1 to facilitate the fixed installation of the fixed base and the external device.

[0018] The system also includes a fixing component 5; the fixing component 5 includes a sliding seat 51, an extrusion plate 52, a locking block 53, and a locking groove 54. The sliding seat 51 is slidably connected to the inside left side of the connecting seat 3 (the sliding seat 51 has evenly distributed clearance grooves inside, and the positioning block 7 is slidably connected to the clearance grooves). The left end of the sliding seat 51 is rotatably connected to an evenly distributed extrusion plate 52 (the extrusion plate 52 is made of iron). The inside of the connecting seat 3 is fixedly connected to an evenly distributed magnet 6. When the main shaft 4 is moved out of the inside of the connecting seat 3, it attracts the extrusion plate 52, causing the extrusion plate 52 to move away from the middle of the connecting seat 3, preventing the extrusion plate 52 from being blocked when the main shaft 4 is subsequently inserted. The side of the extrusion plate 52 near the middle of the sliding seat 51 is fixedly connected to an evenly distributed locking block 53. The outer surface of the main shaft 4 has an evenly distributed locking groove 54, and the locking block 53 and the locking groove 54 are fitted together.

[0019] The fixing component 5 also includes a bolt 55, which is rotatably connected to the inside of the connecting seat 3. The left end of the bolt 55 is threadedly connected to the sliding seat 51. The fixing component 5 also includes a pressing block 56, which is fixedly connected to the left side of the sliding seat 51, so that the right end of the main shaft 4 is in close contact with the left surface of the sliding seat 51.

[0020] The working principle of this utility model is as follows: When using the high-speed spindle connection structure of the CNC engraving and milling machine to install the spindle 4, align the positioning groove 8 with the positioning block 7 laterally, push the spindle 4 to the right so that the right end of the spindle 4 is inserted into the connecting seat 3, and the right end of the spindle 4 is in close contact with the left surface of the sliding seat 51. At this time, rotating bolt 55 causes sliding seat 51 to move to the right, which in turn causes extrusion plate 52 to move to the right. When the side of extrusion plate 52 away from the middle of connecting seat 3 comes into contact with the adjacent extrusion block 56, extrusion block 56 extrudes extrusion plate 52, causing extrusion plate 52 to move closer to the middle of connecting seat 3, which in turn causes locking block 53 to move and engage with slot 54, thereby limiting the axis of spindle 4. At this time, continue rotating bolt 55, and bolt 55 moves to the left relative to sliding seat 51 until the left end of bolt 55 presses against the right surface of spindle 4, causing spindle 4 to tend to move to the left, so that the right surface of locking block 53 is in close contact with the inner left surface of slot 54, further locking spindle 4. When it is necessary to disassemble the spindle 4, flip the bolt 55 to move the sliding seat 51 to the left, which in turn moves the extrusion plate 52 to the left. When the extrusion plate 52 separates from the extrusion block 56, the extrusion plate 52 is subjected to the magnetic force of the magnet 6, which causes the extrusion plate 52 to move away from the middle of the connecting seat 3, thereby causing the locking block 53 to separate from the locking groove 54, and thus pulling the spindle 4 out to the left to complete the disassembly of the spindle 4.

[0021] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A high-speed spindle connection structure for a CNC engraving and milling machine, comprising a fixed base (1), wherein a connecting base (3) is rotatably connected to the interior of the fixed base (1) via a bearing (2), and a spindle (4) is inserted into the interior of the connecting base (3), characterized in that: It also includes a fixing component (5); The fixing component (5) includes a sliding seat (51), an extrusion plate (52), a locking block (53), and a locking groove (54). The sliding seat (51) is slidably connected to the inside left side of the connecting seat (3). The left end of the sliding seat (51) is rotatably connected to an evenly distributed extrusion plate (52). The side of the extrusion plate (52) near the middle of the sliding seat (51) is fixedly connected to an evenly distributed locking block (53). The outer surface of the main shaft (4) is provided with an evenly distributed locking groove (54). The locking block (53) and the locking groove (54) are fitted together.

2. The high-speed spindle connection structure of a CNC engraving and milling machine according to claim 1, characterized in that: The fixing component (5) also includes a bolt (55), which is rotatably connected to the inside of the connecting seat (3), and the left end of the bolt (55) is threadedly connected to the sliding seat (51).

3. The high-speed spindle connection structure of a CNC engraving and milling machine according to claim 1, characterized in that: The fixing component (5) also includes a pressing block (56), which is fixedly connected to the left side of the sliding seat (51).

4. The high-speed spindle connection structure of a CNC engraving and milling machine according to claim 1, characterized in that: The connector (3) is internally fixed with evenly distributed magnets (6).

5. The high-speed spindle connection structure of a CNC engraving and milling machine according to claim 1, characterized in that: The connecting seat (3) has a fixedly connected, uniformly distributed positioning blocks (7) on the left side inside, and a uniformly distributed positioning groove (8) is opened on the right side of the outer surface of the main shaft (4). The positioning blocks (7) are all slidably connected in the horizontally adjacent positioning grooves (8).

6. The high-speed spindle connection structure of a CNC engraving and milling machine according to claim 1, characterized in that: A flange (9) is fixedly connected to the right end of the connecting seat (3).

7. The high-speed spindle connection structure of a CNC engraving and milling machine according to claim 1, characterized in that: The lower surface of the fixing base (1) is provided with evenly distributed connecting holes.

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