High-rotating-speed and high-pressure-intensity center water outlet electric spindle

Abstract

The utility model discloses a high-rotating-speed high-pressure center water outlet electric spindle, which relates to the technical field of electric spindles, and comprises an electric spindle, the top of the electric spindle is fixedly connected with a fixed block, and the lower end of the electric spindle is provided with a drill bit. An injection pipe protruding out of the surface of the fixing block is fixedly connected into the fixing block, a first sleeve is fixedly connected to the top of the motorized spindle and rotationally connected with the interior of the fixing block, the upper end of the first sleeve is rotationally connected with the lower end of the injection pipe, a flow guide pipe is fixedly connected into the motorized spindle, and the upper end of the flow guide pipe is fixedly connected with the first sleeve. According to the high-rotating-speed high-pressure-intensity center water outlet electric spindle, the water outlet groove is obliquely arranged, cooling liquid can be guided to a drill bit, the drill bit can be guided, and therefore the drill bit is directly cooled, and the situations that the drill bit is cooled from the side face, the contact amount of the cooling liquid and the drill bit is reduced, and too much cooling liquid is wasted are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of electric spindles, in particular to a high-speed, high-pressure, and strong central water-discharge electric spindle. Background Art

[0002] The electric spindle is a precision rotating component that integrates a motor and a spindle. It is widely used in CNC machine tools, machining centers and other high-precision processing equipment. Its performance directly affects the efficiency and stability of the entire production system.

[0003] However, the cooling of the existing electric spindle mainly involves spraying cooling water through an external water pipe to irrigate the electric spindle to cool it down. During use, the contact amount of cooling water with the electric spindle is small, resulting in excessive cooling water spraying to one side and not contacting the electric spindle, thereby causing waste of coolant. Therefore, a high-speed and high-pressure center-water-discharge electric spindle is proposed. Utility Model Content

[0004] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art and to provide a high-speed, high-pressure, and strong central water-discharge electric spindle, which can solve the problems of the background technology.

[0005] To achieve the above-mentioned object, the utility model provides the following technical solution: a high-speed, high-pressure, and strong central water-discharging electric spindle, comprising an electric spindle, a fixed block fixedly connected to the top of the electric spindle, a drill bit provided at the lower end of the electric spindle, an injection pipe protruding from the surface of the fixed block fixedly connected to the inside of the fixed block, a first sleeve fixedly connected to the top of the electric spindle, the first sleeve rotatably connected to the inside of the fixed block, the upper end of the first sleeve rotatably connected to the lower end of the injection pipe, a guide pipe fixedly connected to the inside of the electric spindle, the upper end of the guide pipe fixedly connected to the first sleeve, a second sleeve fixedly connected to the inside of the electric spindle, the second sleeve connected to the rotor of the electric spindle, the drill bit and the inner wall of the second sleeve slide with each other, a first sliding groove is provided inside the second sleeve, a Y-shaped shunt pipe is fixedly connected to the lower end of the shunt pipe, circular holes are provided on both sides of the surface of the second sleeve and are connected to the first sliding groove, the two circular holes are fixedly connected to the two lower ends of the shunt pipe respectively, and two water outlet grooves connected to the first sliding groove are provided at the bottom of the second sleeve.

[0006] Preferably, a mounting groove is provided inside the second sleeve, and a mounting plate is fixedly connected to the surface of the drill bit, and the mounting plate is adapted to the mounting groove.

[0007] Preferably, a second sliding groove is provided on the inner wall of the mounting groove, and a sliding block with a trapezoidal cross-section is slidably connected to the inside of the mounting plate. The surface of the sliding block slides with the inner wall of the second sliding groove. A second spring is fixedly connected to the surface of the sliding block, and the end of the second spring away from the sliding block is fixedly connected to the inside of the mounting plate.

[0008] Preferably, an extrusion rod protruding from the surface of the second sleeve is slidably connected to the interior of the second sleeve, and the extrusion rod corresponds to the second sliding groove.

[0009] Preferably, two diverter plates are fixedly connected to the inner wall of the first sliding groove, and the two diverter plates are respectively opposite to the two circular holes.

[0010] Preferably, the inner wall of the first sliding groove is slidably connected to two sliding plates, the opposite sides of the two sliding plates are fixedly connected to first springs, and the ends of the two first springs away from the sliding plates are fixedly connected to the surfaces of the two diverter plates respectively.

[0011] Preferably, the water outlet trough is arranged at an angle.

[0012] Preferably, a limiting ring with a triangular cross-section is fixedly connected to the bottom of the second sleeve.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] (1) The high-speed, high-pressure, and strong center-outlet water-discharging electric spindle has an inclined water outlet trough, which can guide the coolant to the drill bit, thereby guiding the drill bit and directly cooling the drill bit, thereby avoiding cooling the drill bit from the side, resulting in a reduced amount of contact between the coolant and the drill bit and excessive waste of coolant, reducing the waste of coolant and allowing the coolant to fully cool the drill bit.

[0015] (2) The high-speed, high-pressure, and strong center-outlet water-discharging electric spindle can divert the coolant entering the first sliding groove through the circular hole by setting a diverter plate, thereby avoiding the coolant directly impacting the second sleeve and the drill bit, thereby preventing the drill bit from being loosened, thereby ensuring the stability of the drill bit fixation and improving the stability of the device during use.

[0016] (3) The high-speed, high-pressure, and strong center-water electric spindle can guide the coolant discharged from the water outlet trough through the setting of the limiting ring, avoiding the coolant from being away from the drill bit due to centrifugal force during rotation, thereby ensuring that the coolant can smoothly cool the drill bit and ensure the cooling effect of the drill bit. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the electric spindle of the utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the second sleeve of the utility model;

[0021] Figure 4 For this utility model Figure 3 A in the middle is an enlarged schematic diagram;

[0022] Figure 5 This is a schematic diagram of the internal structure of the second sleeve of the utility model.

[0023] Figure numerals: 1. electric spindle; 2. fixed block; 3. drill bit; 4. injection pipe; 5. rotating shaft; 6. first sleeve; 7. guide pipe; 8. diverter pipe; 9. second sleeve; 10. circular hole; 11. diverter plate; 12. sliding plate; 13. first spring; 14. first sliding groove; 15. water outlet groove; 16. limiting ring; 17. mounting groove; 18. mounting plate; 19. second sliding groove; 20. sliding block; 21. second spring; 22. extrusion rod. DETAILED DESCRIPTION

[0024] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0025] See also Figure 1-5 The utility model provides a technical solution: a high-speed, high-pressure, and strong central water-discharge electric spindle, comprising an electric spindle 1, a fixed block 2 fixedly connected to the top of the electric spindle 1 for connecting to external equipment, a drill bit 3 provided at the lower end of the electric spindle 1 for drilling holes in a workpiece, an injection pipe 4 protruding from the surface of the fixed block 2 fixedly connected to the inside of the fixed block 2 for connecting to an injection pipe of external coolant, thereby injecting coolant into the device.

[0026] The top of the electric spindle 1 is fixedly connected with a first sleeve 6, and the first sleeve 6 is rotatably connected to the inside of the fixed block 2. The upper end of the first sleeve 6 is rotatably connected to the lower end of the injection pipe 4. The inside of the electric spindle 1 is fixedly connected with a guide tube 7, and the upper end of the guide tube 7 is fixedly connected to the first sleeve 6. The guide tube 7 is arranged in the rotor inside the electric spindle 1, that is, the rotor is set to a hollow state, so that the guide tube 7 is installed in the rotor, which will not affect the normal operation of the electric spindle 1. At the same time, the setting of the guide tube 7 can make the coolant stay in the rotor of the electric spindle 1 for a long time, so that the coolant can fully cool the drill. The inside of the electric spindle 1 is fixedly connected with a second sleeve 9, and the second sleeve 9 is rotatably connected to the rotor of the electric spindle 1. The drill bit 3 and the inner wall of the second sleeve 9 are connected, and the drill bit 3 and the inner wall of the second sleeve 9 slide with each other. A first sliding groove 14 is provided inside the second sleeve 9 to provide a temporary storage space for the coolant. The lower end of the guide tube 7 is fixedly connected with a Y-shaped shunt pipe 8. Circular holes 10 are provided on both sides of the surface of the second sleeve 9 and are connected to the first sliding groove 14. The two circular holes 10 are respectively fixedly connected to the two lower ends of the shunt pipe 8, so that the coolant can be injected into the first sliding groove 14. A mounting groove 17 is provided inside the second sleeve 9. A mounting plate 18 is fixedly connected to the surface of the drill bit 3, and the mounting plate 18 is adapted to the mounting groove 17, so that the installation of the drill bit 3 is positioned by the setting of the mounting groove 17 and the mounting plate 18.

[0027] Furthermore, a second sliding groove 19 is opened on the inner wall of the mounting groove 17, and a sliding block 20 with a trapezoidal cross-section is slidably connected to the inside of the mounting plate 18. The surface of the sliding block 20 and the inner wall of the second sliding groove 19 slide with each other. A second spring 21 is fixedly connected to the surface of the sliding block 20, and the end of the second spring 21 away from the sliding block 20 is fixedly connected to the inside of the mounting plate 18 for resetting the sliding block 20.

[0028] The interior of the second sleeve 9 is slidably connected to an extrusion rod 22 protruding from the surface of the second sleeve 9. The extrusion rod 22 corresponds to the second sliding groove 19, so that the staff can press the extrusion rod 22 to retract the sliding block 20 into the mounting plate 18, so that the mounting plate 18 is separated from the second sliding groove 19, so that the drill bit 3 can be separated from the second sleeve 9, thereby facilitating the staff to remove the drill bit 3, thereby improving the use effect of the device, and worthy of promotion.

[0029] Furthermore, two diverter plates 11 are fixedly connected to the inner wall of the first sliding groove 14, and the two diverter plates 11 are respectively opposite to the two circular holes 10. Therefore, through the setting of the diverter plates 11, the coolant entering the first sliding groove 14 through the circular holes 10 can be diverted, thereby avoiding the coolant directly impacting the second sleeve 9 and the drill bit 3, thereby causing the drill bit 3 to loosen, thereby ensuring the stability of the drill bit 3 fixation and improving the stability of the device during use.

[0030] The inner wall of the first sliding groove 14 is slidably connected to two sliding plates 12, and the opposite sides of the two sliding plates 12 are fixedly connected with first springs 13, and the ends of the two first springs 13 away from the sliding plates 12 are fixedly connected to the surfaces of the two diverter plates 11 respectively. Therefore, through the arrangement of the sliding plates 12, the impact force of the coolant on the sliding plates 12 can be utilized to make the sliding plates 12 fit with the surface of the drill bit 3, hold the drill bit 3, and clamp it, thereby further improving the fixing effect of the drill bit 3, avoiding the drill bit 3 from tilting during drilling, further improving the use effect of the device, and worthy of promotion.

[0031] Furthermore, two water outlet grooves 15 connected to the first sliding groove 14 are provided at the bottom of the second sleeve 9. The water outlet grooves 15 are arranged at an angle, so that the setting of the water outlet grooves 15 provides a channel for the discharge of the coolant in the first sliding groove 14. At the same time, the inclined setting of the water outlet grooves 15 can guide the coolant to the drill bit 3, so that the drill bit 3 can be guided, thereby directly cooling the drill bit 3, thereby avoiding cooling the drill bit 3 from the side, resulting in a reduced contact amount between the coolant and the drill bit 3, and causing excessive waste of coolant, thereby reducing the waste of coolant and allowing the coolant to fully cool the drill bit 3.

[0032] A limiting ring 16 with a triangular cross-section is fixedly connected to the bottom of the second sleeve 9. The limiting ring 16 can guide the coolant discharged from the water outlet trough 15, thereby preventing the coolant from moving away from the drill bit 3 due to centrifugal force during rotation, thereby ensuring that the coolant can smoothly cool the drill bit 3 and ensure the cooling effect of the drill bit 3.

[0033] Specifically, when in use, the coolant is transported to the injection pipe 4 through an external water pump, so that the coolant enters the guide pipe 7 to cool the rotor of the electric spindle 1. As the coolant flows, the coolant enters the second sleeve 9 through the two diversion pipes 8, and impacts the sliding plate 12 through the diversion of the diversion plate 11, so that the sliding plate 12 slides in the first sliding groove 14, and then stretches the first spring 13, so that the sliding plate 12 fits the surface of the drill bit 3 and holds the drill bit 3. Then the coolant flows out through the water outlet groove 15, and impacts the surface of the drill bit 3 through the guidance of the limiting ring 16, directly cooling the drill bit 3, thereby achieving the purpose of cooling the electric spindle 1 and the drill bit 3 by the central water outlet, improving the cooling effect of the electric spindle 1 and the drill bit 3, while reducing the waste of coolant, improving the use effect of the device, and worthy of promotion.

[0034] Working principle: When in use, the coolant is transported to the injection pipe 4 through an external water pump, and then the coolant enters the guide pipe 7 to cool the rotor of the electric spindle 1. As the coolant flows, the coolant enters the second sleeve 9 through the two diversion pipes 8, and impacts the sliding plate 12 through the diversion of the diversion plate 11, so that the sliding plate 12 slides in the first sliding groove 14, and then stretches the first spring 13, so that the sliding plate 12 fits the surface of the drill bit 3 and holds the drill bit 3. Then the coolant flows out through the water outlet trough 15, and impacts the surface of the drill bit 3 through the guidance of the limiting ring 16, directly cooling the drill bit 3.

[0035] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A high-speed, high-pressure, central water-discharging electric spindle, comprising an electric spindle (1), characterized in that: The top of the electric spindle (1) is fixedly connected to a fixed block (2), the lower end of the electric spindle (1) is provided with a drill bit (3), the interior of the fixed block (2) is fixedly connected to an injection pipe (4) protruding from the surface of the fixed block (2), the top of the electric spindle (1) is fixedly connected to a first sleeve (6), the first sleeve (6) is rotatably connected to the interior of the fixed block (2), the upper end of the first sleeve (6) is rotatably connected to the lower end of the injection pipe (4), the interior of the electric spindle (1) is fixedly connected to a guide pipe (7), the upper end of the guide pipe (7) is fixedly connected to the first sleeve (6), the interior of the electric spindle (1) is fixedly connected to the first sleeve (6), The second sleeve (9) is connected to the rotor of the electric spindle (1), the drill bit (3) and the inner wall of the second sleeve (9) slide with each other, the interior of the second sleeve (9) is provided with a first sliding groove (14), the lower end of the guide tube (7) is fixedly connected with a Y-shaped shunt tube (8), circular holes (10) are provided on both sides of the surface of the second sleeve (9), and are connected with the first sliding groove (14), the two circular holes (10) are fixedly connected with the two lower ends of the shunt tube (8), and the bottom of the second sleeve (9) is provided with two water outlet grooves (15) connected with the first sliding groove (14).

2. The high-speed, high-pressure, central-water-discharge electric spindle according to claim 1, characterized in that: A mounting groove (17) is provided inside the second sleeve (9), and a mounting plate (18) is fixedly connected to the surface of the drill bit (3), and the mounting plate (18) is adapted to the mounting groove (17).

3. The high-speed, high-pressure, central-water-discharge electric spindle according to claim 2, characterized in that: A second sliding groove (19) is formed on the inner wall of the mounting groove (17), and a sliding block (20) having a trapezoidal cross section is slidably connected to the interior of the mounting plate (18). The surface of the sliding block (20) and the inner wall of the second sliding groove (19) slide relative to each other. A second spring (21) is fixedly connected to the surface of the sliding block (20), and one end of the second spring (21) away from the sliding block (20) is fixedly connected to the interior of the mounting plate (18).

4. The high-speed, high-pressure, central-water-discharge electric spindle according to claim 3, characterized in that: The second sleeve (9) is internally slidably connected to an extrusion rod (22) protruding from the surface of the second sleeve (9), and the extrusion rod (22) corresponds to the second sliding groove (19).

5. The high-speed, high-pressure, central-water-discharge electric spindle according to claim 4, characterized in that: Two diverter plates (11) are fixedly connected to the inner wall of the first sliding groove (14), and the two diverter plates (11) are respectively opposite to the two circular holes (10).

6. The high-speed, high-pressure, central-water-discharge electric spindle according to claim 5, characterized in that: Two sliding plates (12) are slidably connected to the inner wall of the first sliding groove (14), and first springs (13) are fixedly connected to opposite sides of the two sliding plates (12), and ends of the two first springs (13) away from the sliding plates (12) are fixedly connected to the surfaces of the two diverter plates (11).

7. The high-speed, high-pressure, central-water-discharge electric spindle according to claim 6, characterized in that: The water outlet trough (15) is arranged in an inclined manner.

8. The high-speed, high-pressure, central-water-discharge electric spindle according to claim 7, characterized in that: A limiting ring (16) with a triangular cross-section is fixedly connected to the bottom of the second sleeve (9).

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