A spindle structure with a central water outlet function

Abstract

The utility model relates to machine tool technical field discloses a main shaft structure with central water outlet function, including main shaft box, the inside of main shaft box is provided with the support frame of integrated mould, the bottom rotation of main shaft box is installed with BT50 - central water outlet main shaft, the top of BT50 - central water outlet main shaft is provided with central water outlet swivel joint, the top of support frame is fixed with integral type knock cylinder support for improving knock cylinder installation stability, integral type knock cylinder support is provided with the fixing mechanism for improving the fixed stability of central water outlet swivel joint outside connecting pipeline, this main shaft structure with central water outlet function, integral type knock cylinder support adopts integrated welding square box structure, and the rigidity is strong, and will not bend deformation, can effectively prevent the difficult problem of main shaft loose sword that the sword stroke of knock is caused by deformation after long time use, the insufficient problem of knock sword force happens.

Description

Technical Field

[0001] This utility model relates to the field of machine tool technology, specifically to a spindle structure with a central water outlet function. Background Technology

[0002] Center-outlet cooling typically refers to the direct delivery of coolant or cooling water to the machining area via the spindle or a specific channel in mechanical equipment (such as machine tools and CNC machining centers) to cool, lubricate, and clean the cutting tools and workpiece. This technology, by delivering coolant directly to the machining point through internal channels, offers higher cooling efficiency and better lubrication compared to traditional external spraying methods, significantly improving machining efficiency and quality. Center-outlet cooling plays an irreplaceable role in modern industrial manufacturing, especially in high-precision, high-efficiency machining, and is a crucial means of improving machining quality and production efficiency.

[0003] Currently, most manufacturers on the market use four support pillars to install the cutter cylinder, which will fatigue and deform over time. The current market also uses M16*1.5 reverse thread for stress, which will also fatigue and deform over time, reducing the cutter stroke.

[0004] Other manufacturers on the market directly connect the pipes without considering the bias load on the rotary joint caused by the weight of the pipes. Over time, the rotary joint will be subjected to bias force for a long time, which will reduce its lifespan and increase the risk of damage. Failure will cause a chain reaction of spindle cooling problems.

[0005] To address the aforementioned issues, an innovative design is urgently needed based on the existing spindle structure. Utility Model Content

[0006] The purpose of this invention is to provide a spindle structure with a central water outlet function to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a spindle structure with a center water outlet function, including a spindle housing, an integrally formed support frame inside the spindle housing, a BT50-center water outlet spindle rotatably mounted on the bottom of the spindle housing, a center water outlet rotary joint on the top of the BT50-center water outlet spindle, and an integral knife-cutting cylinder bracket for improving the installation stability of the knife-cutting cylinder fixed on the top of the support frame;

[0008] The integrated blade cylinder bracket is equipped with a fixing mechanism for improving the stability of the external connection pipeline of the central water outlet rotary joint.

[0009] Preferably, the tool-removing cylinder is located inside the spindle housing, and the top of the integrated tool-removing cylinder bracket is fixedly connected to the bottom of the tool-removing cylinder.

[0010] Preferably, the integrated knife-cutting cylinder bracket adopts an integrated welded square box structure.

[0011] Preferably, the output end of the cutting cylinder is provided with a cutting cylinder extension sleeve, the cutting cylinder extension sleeve is located inside the integrated cutting cylinder bracket, and an adaptive adjustment pad is provided between the top of the cutting cylinder extension sleeve and the output end of the cutting cylinder.

[0012] Preferably, the fixing mechanism includes a pipe fixing plate, one side of the integrated knife-cutting cylinder bracket is fixed with the pipe fixing plate, a shuttle valve connecting pipe is fixedly fixed inside the pipe fixing plate, the lower end of the shuttle valve connecting pipe is fixedly connected to the top of one side of the central water outlet rotary joint, the upper end of the shuttle valve connecting pipe is connected to the bottom water outlet of the shuttle valve, and one side of the shuttle valve is fixedly connected to the top of one side of the integrated knife-cutting cylinder bracket through the shuttle valve bracket.

[0013] Preferably, a return water pipe is fixedly connected to one side of the central water outlet rotary joint.

[0014] Preferably, a spindle motor is fixed to one side of the spindle housing via a bracket, and a belt gear is fixed to the bottom output end of the spindle motor. The belt gear is connected to another belt gear via a belt, and the other belt gear is nested and fixedly connected to the outer wall of the BT50-center water outlet spindle.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the spindle structure with center water outlet function and the integrated cutter cylinder bracket adopt an integrated welded square box structure, which is rigid and will not bend or deform. It can effectively prevent the problem of spindle tool release caused by insufficient cutting stroke and cutting force due to deformation after long-term use.

[0016] The connection point of the extension sleeve of the cutter cylinder adopts a direct contact method, which is more rigid and the sleeve is not easily deformed. This solution uses an adaptive adjustment shim at the contact surface to achieve a tight contact and more uniform transmission of rigid force.

[0017] The external connection pipeline of the rotary joint with central water outlet adopts a pipeline fixing structure with a fixing plate and shuttle valve bracket, which can effectively prevent the connection from loosening and effectively extend the service life of the rotary joint. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the blade part of this utility model;

[0019] Figure 2 This utility model Figure 1 A partially enlarged structural schematic diagram of the mid-side cross-section;

[0020] Figure 3This is a front view structural diagram of the present utility model.

[0021] In the diagram: 1. Spindle housing; 2. Tool-changing cylinder; 3. Integrated tool-changing cylinder bracket; 4. Tool-changing cylinder extension sleeve; 5. Adaptive adjustment pad; 6. Pipe fixing plate; 7. Shuttle valve bracket; 8. Shuttle valve connecting pipe; 9. Shuttle valve; 10. Center water outlet rotary joint; 11. Return water pipe; 12. BT50-center water outlet spindle; 13. Spindle motor. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-3 This utility model provides a technical solution: a spindle structure with a center water outlet function, including a spindle housing 1. The spindle housing 1 adopts a fully enclosed support structure design with high-rigidity side walls and internal support structures to withstand large cutting forces and heavy loads during the machining process, ensuring machining accuracy and stability. An integrally formed support frame is set inside the spindle housing 1. The bottom of the spindle housing 1 is rotatably mounted with a BT50-center water outlet spindle 12. The top of the BT50-center water outlet spindle 12 is provided with a center water outlet rotary joint 10. An integral cutter cylinder bracket 3 is fixed on the top of the support frame to improve the installation stability of the cutter cylinder 2.

[0024] The integrated knife-cutting cylinder bracket 3 is equipped with a fixing mechanism to improve the stability of the external connection pipeline of the central water outlet rotary joint 10.

[0025] The tool changer 2 is located inside the spindle housing 1. The top of the integrated tool changer bracket 3 is fixedly connected to the bottom of the tool changer 2. The tool changer 2 is the core actuator of the automatic tool changer system in the gantry machining center, responsible for clamping and releasing the tool during the tool change process. Its core value lies in: force transmission hub: converting pneumatic / hydraulic energy into mechanical thrust, which directly acts on the spindle drawbar mechanism; efficiency guarantee: achieving millisecond-level response through pneumatic-hydraulic pressurization technology, significantly shortening the tool change time (typical tool change action is completed within 0.5 seconds); accuracy maintenance: ensuring the rigid fixation of the tool during high-speed cutting, avoiding accuracy loss caused by machining vibration.

[0026] The integrated tool-cutting cylinder bracket 3 adopts an integrated welded square box structure, which is rigid and will not bend or deform. It can effectively prevent the problem of insufficient tool-cutting stroke and tool-cutting force caused by deformation after long-term use, which leads to difficulties in spindle tool release.

[0027] The output end of the tool-changing cylinder 2 is equipped with a tool-changing cylinder extension sleeve 4. The tool-changing cylinder extension sleeve 4 is a key component for upgrading the efficiency and flexibility of CNC machine tools. Through a professional adjustable distance structure design, it solves the problems of space limitation and power transmission. The tool-changing cylinder extension sleeve 4 is located inside the integrated tool-changing cylinder bracket 3. An adaptive adjustment pad 5 is set between the top of the tool-changing cylinder extension sleeve 4 and the output end of the tool-changing cylinder 2. The adaptive adjustment pad 5 is a multi-functional industrial product. Its core function is to achieve uniform pressure distribution and automatic adaptation of support shape through mechanical structure cooperation, so as to meet the needs of precise support and adjustment in such scenarios.

[0028] The fixing mechanism includes a pipe fixing plate 6. The pipe fixing plate 6 is fixed to one side of the integrated cutter cylinder bracket 3. The shuttle valve connecting pipe 8 is fixed through the inside of the pipe fixing plate 6. The lower end of the shuttle valve connecting pipe 8 is fixedly connected to the top of one side of the central water outlet rotary joint 10. The upper end of the shuttle valve connecting pipe 8 is connected to the bottom water outlet of the shuttle valve 9. One side of the shuttle valve 9 is fixedly connected to the top of one side of the integrated cutter cylinder bracket 3 through the shuttle valve bracket 7. The pipe fixing plate 6 is made of iron plate, which has high rigidity and good stability. It fixes the shuttle valve connecting pipe 8. During processing, the shuttle valve connecting pipe 8 will not swing. The shuttle valve connecting pipe 8 and its accessories have a long service life and good economy.

[0029] The shuttle valve bracket 7 is made of iron plate, which is rigid and stable. It fixes the shuttle valve 9. During processing, the shuttle valve 9 will not swing. The shuttle valve 9 and its accessories have a long service life and are economical.

[0030] The shuttle valve connecting pipe 8 is made of metal rigid pipe, and its two ends are connected to the inlet (X / Y port) of the shuttle valve 9 and the external pressure source (such as auxiliary oil pump, coolant pump) through threads or flanges; the function of the shuttle valve connecting pipe 8 is: pressure isolation: to prevent different pressure sources from interfering with each other and to ensure system stability; directional medium delivery: to automatically switch coolant / compressed air according to working conditions, adapting to different machining modes such as high-speed / heavy-load spindle.

[0031] The shuttle valve 9 uses mechanical pressure to drive the valve core displacement, achieving fluid path switching, high-pressure priority output, and bidirectional check with a simple structure. Its core value lies in improving the reliability, safety, and control flexibility of the system. In fields such as industrial automation, heavy machinery, and aerospace, it is both a basic component and a key carrier of complex control logic.

[0032] The center water outlet rotary joint 10 is fixedly connected to a return water pipe 11 on one side. The center water outlet rotary joint 10 is the core component of the gantry machining center to achieve efficient deep hole machining. It accurately delivers high-pressure coolant to the tool cutting area through the internal channel of the spindle, solving the problems of insufficient cooling and difficult chip removal in deep hole and high-speed cutting by traditional cooling methods.

[0033] The functions of return water pipe 11 are: heat recovery: high-temperature coolant returns to the heat exchanger for cooling through return water pipe 11, reducing energy consumption; system self-cleaning: return water pipe 11 is equipped with a filter to intercept cutting debris and oil, protecting pumps and valves; and realizes coolant regeneration and reuse, reducing maintenance costs.

[0034] A spindle motor 13 is fixed to one side of the spindle housing 1 by a bracket. A belt gear is fixed to the bottom output end of the spindle motor 13. The belt gear is connected to another belt gear through a belt. The other belt gear is nested and fixedly connected to the outer wall of the BT50-center water outlet spindle 12. The working principle of the BT50-center water outlet spindle 12 is to cool it through the internal cooling system. Cooling water enters the spindle through a water pipe and then sprays out through the central water outlet hole of the spindle to quickly remove the heat generated by the spindle and keep the spindle temperature within a reasonable range. The structural design of the center water outlet rotary joint 10 mainly involves its function of continuous fluid (such as coolant) transmission during rotation.

[0035] The spindle motor 13 is used to drive the spindle 12 of the BT50-center water outlet model to rotate.

[0036] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A spindle structure with a center water outlet function, comprising a spindle housing (1), wherein an integrally formed support frame is provided inside the spindle housing (1), a BT50-center water outlet spindle (12) is rotatably mounted on the bottom of the spindle housing (1), and a center water outlet rotary joint (10) is provided on the top of the BT50-center water outlet spindle (12), characterized in that: The top of the support frame is fixed with an integrated knife-removing cylinder bracket (3) for improving the installation stability of the knife-removing cylinder (2); The integrated knife-cutting cylinder bracket (3) is equipped with a fixing mechanism for improving the stability of the external connection pipeline of the central water outlet rotary joint (10).

2. The spindle structure with a central water outlet function according to claim 1, characterized in that: The cutting cylinder (2) is located inside the spindle housing (1), and the top of the integrated cutting cylinder bracket (3) is fixedly connected to the bottom of the cutting cylinder (2).

3. The spindle structure with a central water outlet function according to claim 1, characterized in that: The integrated knife-cutting cylinder bracket (3) adopts an integrated welded square box structure.

4. The spindle structure with a central water outlet function according to claim 1, characterized in that: The output end of the knife-cutting cylinder (2) is provided with a knife-cutting cylinder extension sleeve (4), which is located inside the integrated knife-cutting cylinder bracket (3). An adaptive adjustment pad (5) is provided between the top of the knife-cutting cylinder extension sleeve (4) and the output end of the knife-cutting cylinder (2).

5. A spindle structure with a central water outlet function according to claim 1, characterized in that: The fixing mechanism includes a pipe fixing plate (6), and the pipe fixing plate (6) is fixed on one side of the integrated knife-cutting cylinder bracket (3). The pipe fixing plate (6) is fixedly inserted through the inside of the pipe fixing plate (6). The lower end of the shuttle valve connecting pipe (8) is fixedly connected to the top of one side of the central water outlet rotary joint (10). The upper end of the shuttle valve connecting pipe (8) is connected to the bottom water outlet of the shuttle valve (9). One side of the shuttle valve (9) is fixedly connected to the top of one side of the integrated knife-cutting cylinder bracket (3) through the shuttle valve bracket (7).

6. The spindle structure with a central water outlet function according to claim 5, characterized in that: A return water pipe (11) is fixedly connected to one side of the central water outlet rotary joint (10).

7. A spindle structure with a central water outlet function according to claim 1, characterized in that: A spindle motor (13) is fixed to one side of the spindle housing (1) by a bracket. A belt gear is fixed to the bottom output end of the spindle motor (13). The belt gear is connected to another belt gear by a belt. The other belt gear is nested and fixedly connected to the outer wall of the BT50-center water outlet spindle (12).

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