High-speed high-pressure center water outlet axial power tool apron

Abstract

The utility model provides a high-speed high-pressure center water outlet axial power tool apron which comprises a body, a vertical input shaft vertically arranged in the body and a horizontally arranged main shaft, a flow channel penetrating through the two ends is formed in the main shaft, a chuck is arranged at one end of the main shaft, a cover body is installed at the end, away from the chuck, of the body, and an installation groove is formed in the cover body and faces the body. A movable sealing shaft sleeve is installed on the side, facing the cover body, of the main shaft, extends into the cover body and abuts against the friction shaft sleeve, an inflow channel with the two ends communicated with the outside is formed in the cover body, the inflow channel is communicated with the installation groove, and the cover body is provided with an overflow channel communicated with the outside. On one hand, the friction shaft sleeve is pushed to be tightly pressed on the dynamic sealing shaft sleeve through the pressure of cooling liquid flowing into the channel, and the high-speed and high-pressure cooling liquid is better in sealing performance; on the other hand, when the central water outlet hole of the front-end cutter is blocked, the cooling liquid can flow out of the overflow channel, and the situation that the cooling liquid flows into the power cutter holder to damage a bearing and a gear is prevented.

Description

Technical Field

[0001] The utility model relates to the field of processing equipment, in particular to a high-speed and high-pressure central water-outlet axial power tool holder. Background Art

[0002] The power tool holder is a power milling head on a CNC turning and milling machine. It is installed on a power tool turret and powered by a drive motor inside the power tool turret. It can meet the requirements of milling, drilling, tapping and other processing techniques. Traditional power tool holders are generally cooled by spraying cutting fluid externally. When deep hole processing is encountered, the coolant can only be sprayed externally on the drill bit and the tool for cooling, but it does not actually cool the tool blade. When processing deep holes, it cannot cool the head of the drill bit, so the drill bit is damaged due to insufficient cooling when processing deep holes, which reduces the service life of the drill bit and affects the processing accuracy of the workpiece. Existing Chinese patent: an internally cooled power tool holder, announcement number: CN219170317U. During processing, the coolant of the utility model can enter the flow channel of the spindle from the channel of the base through the static ring body, and then enter the center of the internally cooled special tool or drill through the spindle flow channel to be sprayed out, and the coolant is output from the central axis of the power tool holder to achieve a better cooling effect. However, once the central water outlet hole of the front end tool of the power tool holder is blocked, the water pressure will change direction to generate pressure at the contact surface seal of the dynamic sealing ring and the static sealing ring. When the pressure is greater than the preload spring pressure, the static sealing ring is directly pushed away to cause water leakage, and the leaked water can only flow to the inside of the power tool holder, thereby damaging the bearings and gears. Utility Model Content

[0003] The utility model provides a high-speed and high-pressure center-water-outlet axial power tool holder, aiming to improve the technical problems mentioned in the above technical background.

[0004] The utility model is achieved in this way:

[0005] A high-speed, high-pressure, center-water-outlet axial power tool holder comprises a main body, a vertical input shaft and a horizontally arranged main shaft are vertically arranged inside the main shaft, a flow channel penetrating through both ends is opened inside the main shaft along the length direction, a chuck is arranged at one end of the main shaft, a cover body is installed at the end of the main body away from the chuck, a mounting groove is opened on the cover body facing the main body, a friction sleeve is installed in the mounting groove, a dynamic sealing sleeve is installed on the side of the main shaft facing the cover body, the dynamic sealing sleeve extends into the cover body and conflicts with the friction sleeve, an inflow channel connected to the outside at both ends is arranged in the cover body, the inflow channel is connected to the mounting groove, the cover body is provided with an overflow channel connected to the outside, and the overflow channel is placed at a position where the dynamic sealing sleeve and the friction sleeve conflict with each other.

[0006] Furthermore, the dynamic seal sleeve extends into one side of the cover body to install a rotating seal ring.

[0007] Furthermore, an O-ring is sleeved on the friction sleeve.

[0008] Furthermore, a plug is installed at one end of the inflow channel.

[0009] Furthermore, the body is provided with a liquid inlet pipe, and the other end of the inflow channel is connected to the liquid inlet pipe.

[0010] Furthermore, the friction sleeve is fixed to the cover body via a stop pin.

[0011] Furthermore, bearings are installed on both sides of the main shaft, an input bevel gear is installed on the side of the input shaft close to the main shaft, and an output bevel gear is sleeved on the main shaft.

[0012] The beneficial effects of the utility model are:

[0013] The utility model discloses a high-speed and high-pressure center-water-outlet axial power tool holder with a simple structure and a reasonable and ingenious design. The utility model comprises a main body, a vertical input shaft and a horizontally arranged main shaft are vertically arranged inside the main shaft, a flow channel penetrating through two ends is opened inside the main shaft along the length direction, a chuck is arranged at one end of the main shaft, a cover body is installed at the end of the main body away from the chuck, a mounting groove is opened on the cover body toward the main body, a friction sleeve is installed in the mounting groove, a dynamic sealing sleeve is installed on the side of the main shaft toward the cover body, the dynamic sealing sleeve extends into the cover body and conflicts with the friction sleeve, inflow channels connected to the outside at both ends are arranged inside the cover body, the inflow channel is connected to the mounting groove, the cover body is provided with an overflow channel connected to the outside, and the overflow channel is placed at a position where the dynamic sealing sleeve and the friction sleeve conflict with each other. During processing, the utility model can allow the coolant to flow from the inflow channel of the cover body through the friction sleeve and the dynamic sealing sleeve into the flow channel of the main shaft, and then enter the center of the internally cooled special tool or drill bit through the main shaft flow channel to be sprayed out, so as to achieve the effect of cooling the blade and the drill bit. Compared with the existing technology, on the one hand, the pressure of the coolant in the inflow channel is used to push the friction sleeve to be pressed against the dynamic sealing sleeve, and the high-pressure coolant has better sealing performance; on the other hand, if the central water outlet hole of the front end tool is blocked, the high-pressure coolant will flow out from the overflow channel between the dynamic sealing sleeve and the friction sleeve, preventing the coolant from flowing to the inside of the power tool holder and damaging the bearings and gears. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1It is a cross-sectional schematic diagram of the high-speed and high-pressure center-water-outlet axial power tool holder described in the utility model;

[0016] Figure 2 It is a partial cross-sectional view of the cover body of the high-speed and high-pressure central water outlet axial power tool holder described in the utility model.

[0017] Reference numerals:

[0018] 10. Main body; 101. Input shaft; 1011. Input bevel gear; 102. Main shaft; 1021. Flow channel; 1022. Bearing; 1023. Output bevel gear; 1024. Chuck; 1025. Dynamic seal sleeve; 103. Rotating seal ring; 104. Liquid inlet pipe;

[0019] 20. Cover body; 201. Friction sleeve; 2011. Stop pin; 202. Inflow channel; 203. O-ring; 204. Plug; 205. Overflow channel. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0021] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0023] Please refer to Figure 1 As shown, this embodiment provides a high-speed and high-pressure center-outlet axial power tool holder, including a body 10, in which a vertical input shaft 101 and a horizontally arranged main shaft 102 are vertically arranged. Specifically, bearings 1022 are installed on both sides of the main shaft 102, and an input bevel gear 1011 is installed on the side of the input shaft 101 close to the main shaft 102, and an output bevel gear 1023 is sleeved on the main shaft 102. The input shaft 101 is used as an input of external power, and the main shaft 102 is driven to rotate through the meshing transmission of the input bevel gear 1011 and the output bevel gear 1023. A chuck 1024 is arranged at one end of the main shaft 102, and the chuck 1024 clamps the tool, and the main shaft 102 drives the tool to rotate.

[0024] Please refer to Figure 1-2 As shown, a flow channel 1021 is opened inside the main shaft 102 along the length direction and runs through both ends. The cover body 20 is installed at the end of the main body 10 away from the chuck 1024. The cover body 20 is opened with a mounting groove facing the main body 10, and a friction sleeve 201 is installed in the mounting groove. A dynamic sealing sleeve 1025 is installed on the side of the main shaft 102 facing the cover body 20. The dynamic sealing sleeve 1025 extends into the cover body 20 and conflicts with the friction sleeve 201. Specifically, the dynamic sealing sleeve 1025 is embedded and fixed in the main shaft 102, and the friction sleeve 201 is installed in the mounting groove and fixed to the cover body 20 by a stop pin 2011. The main shaft 102 drives the dynamic sealing sleeve 1025 to rotate, and the stop pin 2011 can prevent the friction sleeve 201 from following the rotation of the dynamic sealing sleeve 1025. An O-shaped sealing ring 203 is sleeved on the friction sleeve 201 to prevent the coolant from entering the interior of the power tool holder through the gap between the friction sleeve 201 and the wall of the mounting groove.

[0025] Please refer to Figure 1-2As shown, the cover 20 is provided with an inflow channel 202 with both ends connected to the outside, and the body 10 is provided with a liquid inlet pipe 104. The other end of the inflow channel 202 is connected to the liquid inlet pipe 104, and the coolant enters the inflow channel 202 from the liquid inlet pipe 104 of the body 10, avoiding the need to set up an additional connecting pipe to connect the inflow channel 202. The coolant enters the center of the internal cooling type special tool or drill bit through the inflow channel 202, the friction sleeve 201, the dynamic seal sleeve 1025, and the flow channel 1021 of the main shaft 102, and is sprayed out to achieve the effect of cooling the blade and the drill bit. The inflow channel 202 is connected to the mounting groove. When the high-speed and high-pressure coolant enters the friction sleeve 201 of the mounting groove from the inflow channel 202, it will press the friction sleeve 201 against the dynamic seal sleeve 1025, avoiding the formation of a gap between the friction sleeve 201 and the dynamic seal sleeve 1025, which causes the coolant to leak out.

[0026] Please refer to Figure 1-2 As shown, the cover body 20 is provided with an overflow channel 205 connected to the outside, and the overflow channel 205 is placed at a position where the dynamic seal sleeve 1025 and the friction sleeve 201 conflict with each other. Once the central water outlet hole of the front end tool of the power tool holder is blocked, the high-pressure coolant will overflow from the position where the dynamic seal sleeve 1025 and the friction sleeve 201 conflict with each other to the overflow channel 205 and flow to the outside, preventing the blocked coolant from flowing to the inside of the power tool holder and damaging the bearing 1022 and the gear. Furthermore, the dynamic seal sleeve 1025 extends into one side of the cover body 20 to install the rotating seal ring 103, and the rotating seal ring 103 further prevents the coolant from entering the inside of the power tool holder.

[0027] In addition, a plug 204 is installed at one end of the inflow channel 202. When the central water outlet of the front end tool is blocked and the overflow channel 205 is blocked, the high-pressure coolant will push open the plug 204 to relieve pressure.

[0028] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A high-speed and high-pressure center-water axial power tool holder, characterized in that: include A main body, in which a vertical input shaft and a horizontally arranged main shaft are vertically arranged, a flow channel is opened inside the main shaft along the length direction and passes through both ends, a chuck is arranged at one end of the main shaft, a cover body is installed at the end of the main body away from the chuck, a mounting groove is opened on the cover body facing the main body, a friction sleeve is installed in the mounting groove, a dynamic sealing sleeve is installed on the side of the main shaft facing the cover body, the dynamic sealing sleeve extends into the cover body and conflicts with the friction sleeve, inflow channels are arranged at both ends of the cover body to connect to the outside, the inflow channel is connected to the mounting groove, the cover body is arranged with an overflow channel connected to the outside, and the overflow channel is placed at a position where the dynamic sealing sleeve and the friction sleeve conflict with each other.

2. The high-speed and high-pressure center-water outlet axial power tool holder according to claim 1 is characterized in that: The dynamic seal sleeve extends into one side of the cover body and a rotary seal ring is installed thereon.

3. The high-speed and high-pressure center-water outlet axial power tool holder according to claim 1 is characterized in that: An O-type sealing ring is sleeved on the friction shaft sleeve.

4. The high-speed and high-pressure center-water outlet axial power tool holder according to claim 1 is characterized in that: A plug is installed at one end of the inflow channel.

5. The high-speed and high-pressure center-water outlet axial power tool holder according to claim 4 is characterized in that: The body is provided with a liquid inlet pipe, and the other end of the inflow channel is connected to the liquid inlet pipe.

6. The high-speed and high-pressure center-water outlet axial power tool holder according to claim 1 is characterized by: The friction sleeve is fixed to the cover body via a locking pin.

7. The high-speed and high-pressure center-water outlet axial power tool holder according to claim 1 is characterized by: Bearings are installed on both sides of the main shaft, an input bevel gear is installed on the side of the input shaft close to the main shaft, and an output bevel gear is sleeved on the main shaft.

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