Main shaft structure of high-precision machining center

Abstract

The utility model relates to the technical field of numerical control machining, and discloses a main shaft structure of a high-precision machining center, which comprises a main shaft body, one side of the main shaft body is fixedly connected with a cutter joint, two sides of the surface of the cutter joint are fixedly connected with extension blocks, and the surfaces of the extension blocks are fixedly connected with protection mechanisms. According to the main shaft structure of the high-precision machining center, through the arrangement of the refrigeration mechanism, when the interior of the main shaft body is cooled, a power source is switched on, a semiconductor refrigeration piece in the refrigeration chamber emits cold air, the cold air enters the interior of the main shaft body through four air pipes, and the interior of the main shaft body is rapidly cooled; heat on the hot face of the semiconductor chilling plate is dissipated, the refrigeration effect of the semiconductor chilling plate can be improved, and the situation that the internal cutter body transmits part of heat to the main shaft body, the temperature of the main shaft body rises, and the service life of the main shaft body is affected is avoided.

Description

Technical Field

[0001] This utility model relates to the field of CNC machining technology, and in particular to a spindle structure for a high-precision machining center. Background Technology

[0002] A gantry machining center is a machining center in which the spindle Z-axis is set perpendicular to the worktable. The overall structure is a large machining center with a portal frame consisting of double columns and a top beam. There is also a crossbeam in the middle of the double columns. It is especially suitable for machining large workpieces and workpieces with complex shapes. The spindle is a component of the machining center.

[0003] The existing spindle structure of high-precision CNC gantry machining centers has the problem that the internal tools transfer some heat to the spindle during use, causing the spindle temperature to rise and affecting its service life. This cannot meet the needs of users. Therefore, a new spindle structure for high-precision machining centers is proposed.

[0004] A high-precision CNC gantry machining center spindle structure disclosed in publication number CN212264552U includes a spindle body and a limiting ring. The left end of the spindle body has a mounting groove, and a cutting tool is placed inside the mounting groove. A rubber pad is placed inside the cutting tool, and a pull rod is attached to the side of the rubber pad away from the tool's centerline. The limiting ring is located in the middle of the pull rod. A vent hole is provided at the outer end of the spindle body, and a partition is provided inside the spindle body. A flange is fixed to the right end of the spindle body, and a connector is fixed to the right side of the flange. Compared with existing ordinary spindle structures, this high-precision CNC gantry machining center spindle structure, through an anti-wear layer, avoids direct contact between the spindle body and other objects, preventing wear and affecting the spindle's lifespan. It facilitates the installation and removal of cutting tools, increases the bonding force between the spindle and the cutting tool, prevents tool slippage, and the fan accelerates the airflow within the spindle for rapid heat dissipation.

[0005] While the aforementioned patent achieves the goal of preventing the spindle body from directly contacting other objects and causing wear, thus affecting the spindle's lifespan, through the anti-wear layer, facilitating the installation and removal of cutting tools, increasing the bonding force with the cutting tools, preventing tool slippage, and accelerating the airflow within the spindle for rapid heat dissipation, this device does not easily protect against metal shavings generated during tool processing. The flying metal shavings can easily cause injury to surrounding workers.

[0006] Therefore, it is necessary to invent a spindle structure for a high-precision machining center to solve the above problems. Utility Model Content

[0007] (a) Technical problems to be solved

[0008] The purpose of this invention is to provide a spindle structure for a high-precision machining center, which solves the problem mentioned in the background art that the internal cutting tools transfer some heat to the spindle, causing the spindle temperature to rise and affecting the spindle's service life.

[0009] (II) Technical Solution

[0010] To achieve the above objectives, this utility model provides the following technical solution: a spindle structure for a high-precision machining center, comprising a spindle body, a tool connector fixedly connected to one side of the spindle body, extension blocks fixedly connected to both sides of the surface of the tool connector, a protective mechanism fixedly connected to the surface of the extension blocks, and cooling chambers connected to both sides of the surface of the spindle body via air pipes. A cooling mechanism is installed inside the cooling chambers. The protective mechanism includes an electric push rod fixedly connected to the surface of the extension blocks, a protective cover fixedly connected to the end of the electric push rod, and a battery electrically connected to one side of the electric push rod via a power line. The cooling mechanism includes a semiconductor refrigeration chip installed inside the cooling chamber, and a battery pack electrically connected to one side of the semiconductor refrigeration chip via a power line.

[0011] As a further embodiment of this utility model, a heat dissipation chamber is fixedly connected to one side of the cooling chamber, and a heat dissipation mechanism is fixedly connected to the surface of the heat dissipation chamber. The heat dissipation mechanism is used to dissipate heat from the hot surface of the semiconductor cooling chip.

[0012] As a further embodiment of this utility model, the heat dissipation mechanism includes heat dissipation fins fixedly connected to the surface of the heat dissipation chamber. A plurality of heat-conducting pillars are fixedly connected to one side of the heat dissipation fins. The heat-conducting pillars are used to absorb the heat generated by the hot surface of the semiconductor cooling chip.

[0013] As a further embodiment of this invention, the cold side of the semiconductor refrigeration chip is located inside the refrigeration chamber, and the hot side of the semiconductor refrigeration chip is located inside the heat dissipation chamber. The heat dissipation chamber serves to dissipate heat from the semiconductor refrigeration chip.

[0014] As a further embodiment of this utility model, the hot side of the semiconductor cooling chip overlaps the end of the heat-conducting column, and a flange connector is fixedly connected to the back of the main spindle body. The flange connector serves to install and disassemble the main spindle body.

[0015] As a further embodiment of this utility model, two cooling fans are installed on the surface of the heat dissipation chamber, and a ventilation opening is provided on the back of the heat dissipation chamber. A dustproof net is installed inside the ventilation opening, which serves to prevent dust.

[0016] As a further embodiment of this utility model, a tool body is installed inside the tool connector, and several through holes are opened on the surface of the tool connector. The through holes facilitate gas flow.

[0017] (III) Beneficial Effects

[0018] This utility model provides a spindle structure for a high-precision machining center, which has the following advantages:

[0019] 1. The spindle structure of this high-precision machining center, through the setting of the cooling mechanism, when the power is turned on to dissipate heat inside the spindle body, causes the semiconductor cooling chip inside the cooling chamber to emit cool air. The cool air enters the spindle body through four air pipes, rapidly dissipating heat inside the spindle body. In conjunction with the heat dissipation mechanism on one side, the heat from the hot surface of the semiconductor cooling chip is dissipated, which can improve the cooling effect of the semiconductor cooling chip and prevent the internal tool body from transferring some heat to the spindle body, causing the spindle body temperature to rise and affecting the service life of the spindle body.

[0020] 2. The spindle structure of this high-precision machining center, through the setting of the protective mechanism, when the power is turned on during the machining of the workpiece, the electric push rod on one side is activated. The electric push rod drives the protective cover at the end to move to the appropriate position and then wraps around the tool body. This can effectively block the flying debris generated by the tool body during the machining process, improve the safety of the equipment processing, and avoid the flying debris from causing injury to the surrounding personnel. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the protective mechanism structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the refrigeration mechanism of this utility model;

[0024] Figure 4 This is a schematic diagram of the main structure of the spindle of this utility model.

[0025] In the diagram: 1. Spindle body; 2. Tool joint; 3. Extension block; 4. Protective mechanism; 401. Electric push rod; 402. Protective cover; 403. Battery; 5. Cooling chamber; 6. Cooling mechanism; 601. Semiconductor cooling chip; 602. Battery pack; 7. Heat dissipation chamber; 8. Heat dissipation mechanism; 801. Heat dissipation fins; 802. Heat conduction column; 9. Flange connector; 10. Cooling fan; 11. Dustproof screen; 12. Tool body. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0027] Please see Figures 1 to 4 This utility model provides a technical solution: a spindle structure for a high-precision machining center, including a spindle body 1. A tool connector 2 is fixedly connected to one side of the spindle body 1. Extension blocks 3 are fixedly connected to both sides of the surface of the tool connector 2. A protective mechanism 4 is fixedly connected to the surface of the extension blocks 3. The protective mechanism 4 improves the safety of the machining process and prevents debris from flying and causing injury to surrounding workers. Both sides of the surface of the spindle body 1 are connected to a cooling chamber 5 through air pipes. A cooling mechanism 6 is installed inside the cooling chamber 5. The cooling mechanism 6 can improve the efficiency of semiconductor machining. The cooling effect of the body cooling chip 601 prevents the internal tool body 12 from transferring some heat to the spindle body 1, which would cause the temperature of the spindle body 1 to rise and affect the service life of the spindle body 1. The protective mechanism 4 includes an electric push rod 401 fixedly connected to the surface of the extension block 3. A protective cover 402 is fixedly connected to the end of the electric push rod 401. A battery 403 is electrically connected to one side of the electric push rod 401 through a power line. The cooling mechanism 6 includes a semiconductor cooling chip 601 installed inside the cooling chamber 5. A battery pack 602 is electrically connected to one side of the semiconductor cooling chip 601 through a power line.

[0028] A heat dissipation chamber 7 is fixedly connected to one side of the cooling chamber 5, and a heat dissipation mechanism 8 is fixedly connected to the surface of the heat dissipation chamber 7. The heat dissipation mechanism 8 is used to dissipate heat from the hot surface of the semiconductor cooling chip 601.

[0029] The heat dissipation mechanism 8 includes heat dissipation fins 801 fixedly connected to the surface of the heat dissipation chamber 7. Several heat conduction pillars 802 are fixedly connected to one side of the heat dissipation fins 801. The heat conduction pillars 802 are used to absorb the heat generated by the hot surface of the semiconductor cooling chip 601.

[0030] The cold side of the thermoelectric cooler 601 is located inside the cooling chamber 5, and the hot side of the thermoelectric cooler 601 is located inside the heat dissipation chamber 7. The heat dissipation chamber 7 is used to dissipate heat from the thermoelectric cooler 601.

[0031] The hot side of the semiconductor cooling chip 601 overlaps the end of the heat-conducting column 802. A flange connector 9 is fixedly connected to the back of the spindle body 1. The flange connector 9 serves to install and disassemble the spindle body 1.

[0032] Two cooling fans 10 are installed on the surface of the heat dissipation chamber 7. A ventilation opening is provided on the back of the heat dissipation chamber 7. A dustproof net 11 is installed inside the ventilation opening. The dustproof net 11 serves to prevent dust.

[0033] The tool connector 2 has a tool body 12 installed inside. The surface of the tool connector 2 has several through holes, which facilitate the flow of gas.

[0034] In this invention, the working steps of the device are as follows:

[0035] First step: When cooling the inside of the spindle body 1, turn on the power so that the semiconductor cooling chip 601 inside the cooling chamber 5 emits cool air. The cool air enters the inside of the spindle body 1 through four air pipes to quickly cool the inside of the spindle body 1. In conjunction with the heat dissipation mechanism 8 on one side, the heat on the hot surface of the semiconductor cooling chip 601 is dissipated.

[0036] The second step: When processing the workpiece, turn on the power and start the electric push rod 401 on one side. The electric push rod 401 drives the protective cover 402 at the end to move. After it moves to a suitable position, it covers the tool body 12, which can effectively block the flying debris generated by the tool body 12 during processing.

[0037] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0038] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0039] 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. A spindle structure for a high-precision machining center, comprising a spindle body (1), characterized in that: A tool connector (2) is fixedly connected to one side of the main spindle body (1). An extension block (3) is fixedly connected to both sides of the surface of the tool connector (2). A protective mechanism (4) is fixedly connected to the surface of the extension block (3). A cooling chamber (5) is connected to both sides of the surface of the main spindle body (1) through an air pipe. A cooling mechanism (6) is installed inside the cooling chamber (5). The protective mechanism (4) includes an electric push rod (401) fixedly connected to the surface of the extension block (3), a protective cover (402) fixedly connected to the end of the electric push rod (401), and a battery (403) electrically connected to one side of the electric push rod (401) via a power line. The refrigeration mechanism (6) includes a semiconductor refrigeration chip (601) installed inside the refrigeration chamber (5), and a battery pack (602) is electrically connected to one side of the semiconductor refrigeration chip (601) via a power line.

2. The spindle structure of a high-precision machining center according to claim 1, characterized in that: A heat dissipation chamber (7) is fixedly connected to one side of the cooling chamber (5), and a heat dissipation mechanism (8) is fixedly connected to the surface of the heat dissipation chamber (7).

3. The spindle structure of a high-precision machining center according to claim 2, characterized in that: The heat dissipation mechanism (8) includes heat dissipation fins (801) fixedly connected to the surface of the heat dissipation chamber (7), and a plurality of heat-conducting columns (802) are fixedly connected to one side of the heat dissipation fins (801).

4. The spindle structure of a high-precision machining center according to claim 1, characterized in that: The cold side of the semiconductor cooling chip (601) is located inside the cooling chamber (5), and the hot side of the semiconductor cooling chip (601) is located inside the heat dissipation chamber (7).

5. The spindle structure of a high-precision machining center according to claim 1, characterized in that: The hot side of the semiconductor cooling chip (601) overlaps the end of the heat-conducting column (802), and a flange connector (9) is fixedly connected to the back of the main shaft body (1).

6. The spindle structure of a high-precision machining center according to claim 2, characterized in that: Two cooling fans (10) are installed on the surface of the heat dissipation chamber (7), and a ventilation opening is provided on the back of the heat dissipation chamber (7). A dustproof net (11) is installed inside the ventilation opening.

7. The spindle structure of a high-precision machining center according to claim 1, characterized in that: The tool connector (2) has a tool body (12) installed inside, and the surface of the tool connector (2) has several through holes.

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