An inner cooling modular gantry milling machine spindle box

Abstract

The application relates to the technical field of machine tool equipment, in particular to an inner cooling modular gantry milling machine spindle box, which comprises a spindle box body, a spindle, a spindle motor, an accessory milling head, a power module, a spindle module, an accessory grabbing unit, an inner cooling module, a water outlet pipe, a control valve, an output pipe, a water inlet pipe, an input pipe and a cooling auxiliary control assembly; the spindle box is modularly arranged, that is, the spindle box body, the spindle, the spindle motor, the accessory milling head, the power module, the spindle module, the accessory grabbing unit, the inner cooling module, the water inlet hole, the water outlet hole and the cooling groove are arranged; the influence of the heating of the spindle motor, the spindle and the cutter on the spindle box is reduced and isolated, and the structure of the spindle box is simplified; the control valve and the cooling auxiliary control assembly are arranged to regulate and control the cooling work, improve the working flexibility and the cooling efficiency, and meet the actual use requirements.

Description

Technical Field

[0001] This invention relates to the field of machine tool equipment technology, specifically to an internally cooled modular gantry milling machine spindle box. Background Technology

[0002] As an important component of gantry milling machines, the structure and performance of the spindle box directly affect the machine tool's accuracy. During machining, the high-speed rotation of the spindle motor at the top of the spindle box, the high-speed rotation of the spindle at the bottom, and the heat generated by the cutting tool have a significant impact on accuracy.

[0003] To expand functionality, existing machine tools require the addition of various accessory milling heads. The corresponding milling head gripping and hydraulic circuits need to be integrated into the spindle box, making the spindle box structure complex, machining cumbersome, and difficult to guarantee precision. In particular, the misalignment between the spindle motor mounting holes and the spindle mounting holes at both ends of the spindle box increases the spindle load and exacerbates heat generation. Current heat dissipation solutions generally rely on cooling water circulation, but with excessively long circulation paths, the cooling water temperature rises, and the cooling effect on components further downstream is poor. Furthermore, the controllability of the cooling system is poor, requiring adjustments based on actual conditions to improve cooling efficiency.

[0004] To address these issues, this invention proposes an internally cooled modular spindle box for gantry milling machines. Summary of the Invention

[0005] The purpose of this invention is to provide an internally cooled modular spindle box for a gantry milling machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an internally cooled modular gantry milling machine spindle box, comprising a spindle box body, a spindle, a spindle motor, an accessory milling head, a power module, a spindle module, an accessory gripping unit, an internal cooling module, a water outlet pipe, a control valve, an output pipe, a water inlet pipe, an input pipe, and a cooling auxiliary control component; the spindle is connected to the spindle box body, the spindle motor is connected to one end of the spindle box body, the accessory milling head is connected to the other end of the spindle box body, and the power module is located in the spindle box body. In the body, the spindle module and the accessory gripping unit are located at one end of the spindle box body. The internal cooling module is provided with a cooling tank, and one end of the cooling tank is provided with a water inlet and the other end is provided with a water outlet. The water inlet is connected to the water inlet pipe, and the water outlet is connected to the water outlet pipe. Both the water outlet pipe and the water inlet pipe are connected to control valves. The control valve at the end of the water outlet pipe is connected to the output pipe, and the control valve at the end of the water inlet pipe is connected to the input pipe. A branch pipe is provided on the water inlet pipe, and the branch pipe is connected to the cooling auxiliary control component.

[0007] Preferably, the cooling auxiliary control assembly includes a connector, a connecting pipe, a connecting tube, a coolant storage cylinder, a cap, a placement cavity, a sealing column, a groove, a sealing cover plate, a connecting shaft, a rotating strip, a threaded groove, a positioning slot, a fastening screw, an arc-shaped cover, a mounting through groove, a flow through round opening, a filter plate, and a mounting screw. The connector is symmetrically fixed with connecting pipes at both ends, one connecting pipe being fixedly connected to a branch pipe, and the other connecting pipe being fixedly connected to the connecting tube. The connecting tube is located at the bottom end of the coolant storage cylinder, and a cap is threadedly connected to the top end of the coolant storage cylinder. The connector contains a placement cavity, and the sealing column... A groove is provided on one side of the body, and an arc-shaped cover is connected in the groove. One end of the sealing column is connected to the connecting shaft, and the connecting shaft is inserted through the sealing cover plate. The sealing cover plate is fixedly connected to the connecting body by screws. A rotating strip is fixedly provided on one side of the connecting shaft. The rotating strip has a threaded groove, and the threaded groove is threadedly connected to the fastening screw. The positioning slots are equidistantly provided on the sealing cover plate. An installation through groove is provided through the arc-shaped cover, and the arc-shaped cover is fixedly connected by an installation screw. Flow openings are equidistantly provided on the arc-shaped cover, and a filter plate is fixedly provided in the flow openings.

[0008] Preferably, the number of placement cavities and connecting bodies is the same, and the placement cavities are connected in communication with the connecting pipe.

[0009] Preferably, the positioning slots are equidistantly arranged in an arc shape on the sealing cover plate, and the positioning slots are circular slots. The positioning slots correspond to the positions of the fastening screws, and the ends of the fastening screws are adapted to engage with the positioning slots.

[0010] Preferably, the arc-shaped cover is positioned corresponding to the groove.

[0011] Preferably, the filter plate and the flow-through circular opening are positioned correspondingly and have the same number of sets.

[0012] Preferably, the end cross-sectional shape of the arc-shaped cover is set to semi-circular, and the arc-shaped cover corresponds to the position of the pipe opening of the connecting pipe.

[0013] Compared with the prior art, the beneficial effects of the present invention are: The internally cooled modular gantry milling machine spindle box designed in this invention features a modular design, comprising a spindle box body, spindle motor accessories, milling head power module, spindle module accessories, gripping unit, internal cooling module, water inlet and outlet holes, and cooling tank. This reduces and isolates the impact of heat generated by the spindle motor, spindle, and cutting tools on the spindle box and simplifies its structure. Furthermore, the cooling process is regulated by control valves and cooling auxiliary control components, improving operational flexibility and cooling efficiency to meet practical application requirements. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the internally cooled modular gantry milling machine spindle box structure connection of the present invention; Figure 2 This is a sectional view of the internally cooled modular gantry milling machine spindle box structure connection of the present invention; Figure 3 For the present invention Figure 2 Enlarged schematic diagram of the structural connection at point P; Figure 4 For the present invention Figure 2 Enlarged schematic diagram of the structural connection at point Q; Figure 5 This is a schematic diagram of the internal cooling module structure connection of the present invention; Figure 6 This is a schematic diagram of the water outlet pipe structure connected to the water outlet of the cooling tank in this invention. Figure 7 This is a schematic diagram of the left side of the water inlet pipe structure connected to the water inlet of the cooling tank in this invention; Figure 8 This is a schematic diagram of the left side of the water inlet pipe structure connected to the water inlet of the cooling tank in this invention; Figure 9 For the present invention Figure 8 Enlarged schematic diagram of the partial structural connections of the intermediate cooling auxiliary control component; Figure 10 This is a schematic diagram of the front connection of the cooling auxiliary control component structure of the present invention; Figure 11 For the present invention Figure 10 Enlarged schematic diagram of the connection of the central sealing cover plate structure; Figure 12 For the present invention Figure 10 Enlarged schematic diagram of the connection of the arc-shaped cover structure; Figure 13 This is a schematic diagram of the rear connection of the cooling auxiliary control component structure of the present invention.

[0015] In the diagram: 1. Spindle box body; 2. Spindle; 3. Spindle motor; 4. Attachment milling head; 5. Power module; 6. Spindle module; 7. Attachment gripping unit; 8. Internal cooling module; 9. Water inlet; 10. Water outlet; 11. Cooling tank; 12. Water outlet pipe; 13. Control valve; 14. Output pipe; 15. Water inlet pipe; 16. Input pipe; 17. Branch pipe; 18. Cooling auxiliary control component; 18. Connector; 1801. Connecting pipe; 1802. Connecting pipe; 1803. Coolant storage cylinder; 1804. Cover; 1805. Placement cavity; 1806. Sealing column; 1807. Groove; 1808. Sealing cover plate; 1809. Connecting shaft; 1810. Rotating bar; 1811. Threaded groove; 1812. Positioning slot; 1813. Fastening screw; 1814. Arc-shaped cover; 1815. Mounting through groove; 1816. Flow through round opening; 1817. Filter plate; 1818. Mounting screw; 1819. Detailed Implementation

[0016] The technical solutions in the embodiments of the present invention will be clearly and completely described below. All other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present invention.

[0017] Example 1: Please refer to Figures 1-8 A modular gantry milling machine spindle box with internal cooling includes a spindle box body 1, a spindle 2, a spindle motor 3, an accessory milling head 4, a power module 5, a spindle module 6, an accessory gripping unit 7, an internal cooling module 8, a water outlet pipe 12, a control valve 13, an output pipe 14, a water inlet pipe 15, an input pipe 16, and a cooling auxiliary control component 18. The spindle 2 is connected to the spindle box body 1, the spindle motor 3 is connected to one end of the spindle box body 1, and the accessory milling head 4 is connected to the other end of the spindle box body 1. At one end, the power module 5 is installed in the spindle box body 1, the spindle module 6 and the accessory gripping unit 7 are installed at one end of the spindle box body 1, and the internal cooling module 8 is provided with a cooling tank 11, with a water inlet 9 at one end and a water outlet 10 at the other end. The water inlet 9 is connected to the water inlet pipe 15, and the water outlet 10 is connected to the water outlet pipe 12. Both the water outlet pipe 12 and the water inlet pipe 15 are connected to the control valve 13, and the control valve 13 at the end of the water outlet pipe 12 is connected to the output pipe 1. 4. Connection Setup: The control valve 13 at the end of the water inlet pipe 15 is connected to the input pipe 16. A branch pipe 17 is provided on the water inlet pipe 15, and the branch pipe 17 is connected to the cooling auxiliary control component 18. Here, the cooling water completes the cooling circulation from the water inlet hole 9 through the cooling tank 11 and the water outlet hole 10. The cooling auxiliary circulation is controlled by the cooling auxiliary control component 18. It removes the heat dissipated by the spindle motor 3, spindle 2, and cutting tool, and provides thermal insulation for the spindle box body 1. The spindle module 6 integrates the milling head gripper and its hydraulic oil circuit. The accessory gripper unit 7 and its corresponding oil circuit are installed on it, and the spindle 2 is positioned on this module. The power module 5 is used to install and position the spindle motor 3. The spindle module 6 and the power module 5 achieve a high coaxiality between the mounting holes of the spindle motor 3 and the spindle 2 through alignment. The spindle module 6 and the power module 5 are small in size, easy to process, and can achieve high precision. The structural functions of the spindle box are decomposed into modules, simplifying the structure and reducing the processing difficulty.

[0018] Example 2: Based on Example 1, please refer to... Figures 6-13The cooling auxiliary control component 18 here includes a connector 1801, a connecting pipe 1802, a connecting pipe 1803, a coolant storage cylinder 1804, a cap 1805, a placement cavity 1806, a sealing column 1807, a groove 1808, a sealing cover plate 1809, a connecting shaft 1810, a rotating bar 1811, a threaded groove 1812, a positioning slot 1813, a fastening screw 1814, an arc-shaped cover 1815, a mounting through groove 1816, a flow through round opening 1817, a filter plate 1818, and a mounting screw 1819. Connecting pipes 1802 are symmetrically fixed at both ends of the connector 1801, one of which is connected to a branch pipe. 17. A fixed connection is made, with another connecting pipe 1802 fixedly connected to the connecting pipe 1803. The connecting pipe 1803 is located at the bottom end of the coolant storage cylinder 1804, and a cap 1805 is threadedly connected to the top end of the coolant storage cylinder 1804. A placement cavity 1806 is provided in the connecting body 1801, and the number of placement cavities 1806 is the same as that of the connecting body 1801. The placement cavity 1806 is connected to the connecting pipe 1802. A groove 1808 is provided on one side of the sealing column 1807, and an arc-shaped cover 1815 is connected in the groove 1808. One end of the sealing column 1807 is connected to the connecting shaft 1810. A rotating shaft 1810 is inserted through and inserted into a sealing cover plate 1809. The sealing cover plate 1809 is fixedly connected to a connector 1801 by screws. A rotating bar 1811 is fixedly installed on one side of the rotating shaft 1810. A threaded groove 1812 is provided in the rotating bar 1811, and the threaded groove 1812 is threadedly connected to a fastening screw 1814. Positioning slots 1813 are equidistantly arranged on the sealing cover plate 1809. An installation through groove 1816 is provided through the arc-shaped cover 1815, and the arc-shaped cover 1815 is fixedly connected by an installation screw 1819. Flow passage round openings 1817 are equidistantly arranged on the arc-shaped cover 1815, and a fixed... A filter plate 1818 is provided; the positioning slots 1813 are equidistantly arranged in an arc shape on the sealing cover plate 1809, and the positioning slots 1813 are circular grooves. The positioning slots 1813 and the fastening screws 1814 are positioned corresponding to each other, and the ends of the fastening screws 1814 are adapted to engage with the positioning slots 1813; the arc-shaped cover 1815 is positioned corresponding to the groove 1808; the filter plate 1818 and the flow-through circular opening 1817 are positioned corresponding to each other and have the same number of sets; the end cross-sectional shape of the arc-shaped cover 1815 is set as semi-circular, and the arc-shaped cover 1815 is positioned corresponding to the opening of the connecting pipe 1802.

[0019] Here, the flow rate and velocity of the coolant in the cooling tank 11 are controlled by the control valve 13, which can be adjusted according to the actual cooling needs to ensure the cooling efficiency. Furthermore, if a high temperature occurs, the coolant entering the cooling tank 11 may be affected by the high temperature, thus affecting its cooling effect. Therefore, appropriate coolant is added for auxiliary cooling. The cooling auxiliary control component 18 controls the flow rate by cooperating with the sealing column 1807, connecting shaft 1810, rotating bar 1811, and arc-shaped cover 1815. Specifically, the connecting shaft 1810 drives the sealing column 1807 to rotate, and the flow rate is controlled by the size of the overlapping part of the arc-shaped cover 1815 and the connecting pipe 1802, ensuring the cooling effect without waste. Finally, the positioning is achieved by the fastening screw 1814 engaging with the positioning slot 1813.

[0020] The purpose of setting a flow-through circular opening 1817 on the arc-shaped cover 1815 and setting a filter plate 1818 in the flow-through circular opening 1817 is to filter impurities in the liquid and prevent them from entering the cooling tank 11. The arc-shaped cover 1815 also serves as a temporary storage chamber for temporarily storing impurities, and the flow-through circular opening 1817 also has a temporary storage function under the filtering action of the filter plate 1818.

[0021] 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 modular spindle box for an internally cooled gantry milling machine, characterized in that: The system includes a spindle box body, spindle, spindle motor, accessory milling head, power module, spindle module, accessory gripping unit, internal cooling module, water outlet pipe, control valve, output pipe, water inlet pipe, input pipe, and cooling auxiliary control components. The spindle is connected to the spindle box body; the spindle motor is connected to one end of the spindle box body; the accessory milling head is connected to the other end of the spindle box body; the power module is located within the spindle box body; the spindle module and accessory gripping unit are located at one end of the spindle box body; and the internal cooling module contains a cooling tank. The cooling tank has an inlet at one end and an outlet at the other. The inlet is connected to an inlet pipe, and the outlet is connected to an outlet pipe. Both the inlet and outlet pipes are connected to control valves. The control valve at the outlet pipe is connected to an output pipe, and the control valve at the inlet pipe is connected to an input pipe. A branch pipe is provided on the inlet pipe, which is connected to a cooling auxiliary control component. The cooling auxiliary control component includes a connector, a connecting pipe, a coolant storage cylinder, a cap, a placement cavity, a sealing column, and a groove. The components include: a sealing cover, a connecting shaft, a rotating strip, a threaded groove, a positioning slot, fastening screws, an arc-shaped cover, a mounting through groove, a flow-through round opening, a filter plate, and a mounting screw. Symmetrically fixed connecting pipes are installed at both ends of the connecting body; one connecting pipe is fixedly connected to a branch pipe, and the other connecting pipe is fixedly connected to a connecting pipe. The connecting pipe is located at the bottom of the coolant storage cylinder, and a sealing cap is threadedly connected to the top of the coolant storage cylinder. A placement cavity is provided within the connecting body, and a groove is provided on one side of the sealing column, with an arc-shaped [device] connected within the groove. The cover, with one end of the sealing column connected to the connecting shaft, is inserted through the sealing cover plate. The sealing cover plate is fixedly connected to the connecting body by screws. A rotating strip is fixedly installed on one side of the connecting shaft. The rotating strip has a threaded groove, which is threadedly connected to the fastening screw. Positioning slots are equidistantly installed on the sealing cover plate. An installation through groove is provided through the arc-shaped cover, and the arc-shaped cover is fixedly connected by an installation screw. Flow openings are equidistantly provided on the arc-shaped cover, and a filter plate is fixedly installed in each flow opening.

2. The internally cooled modular gantry milling machine spindle box according to claim 1, characterized in that: The placement cavity (1806) and the connector (1801) are provided with the same number of sets, and the placement cavity (1806) is connected to the connecting pipe (1802).

3. The internally cooled modular gantry milling machine spindle box according to claim 1, characterized in that: The positioning slots (1813) are equidistantly arranged in an arc shape on the sealing cover plate (1809), and the positioning slots (1813) are set as circular slots. The positioning slots (1813) and the fastening screws (1814) are positioned corresponding to each other, and the ends of the fastening screws (1814) are adapted to engage with the positioning slots (1813).

4. The internally cooled modular gantry milling machine spindle box according to claim 1, characterized in that: The arc-shaped cover (1815) is positioned corresponding to the groove (1808).

5. The internally cooled modular gantry milling machine spindle box according to claim 1, characterized in that: The filter plate (1818) and the flow-through circular port (1817) are positioned in the same way and have the same number of sets.

6. The internally cooled modular gantry milling machine spindle box according to claim 1, characterized in that: The end cross-sectional shape of the arc-shaped cover (1815) is set as semi-circular, and the arc-shaped cover (1815) corresponds to the port setting position of the connecting pipe (1802).

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