Power head with tool cooling function

Abstract

The power head comprises a machine body, an input shaft and an output shaft are rotationally arranged on the machine body, a mounting hole used for mounting a cutter is formed in one end of the output shaft, a water injection hole is formed in the end, away from the mounting hole, of the output shaft, and the water injection hole communicates with the mounting hole. The method has the effect of reducing the damage probability of the cutter when the interior of the workpiece is machined.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of machine tool power head, in particular to a power head with tool cooling. BACKGROUND

[0002] The power head is also called power tool holder, which refers to the tool holder installed on the power tool tower and driven by the servo motor. After installing the tool on the power head, the tool is driven by power to process the workpiece. In the processing process, the contact surface of the tool and the workpiece will quickly rise in temperature due to high-speed friction. High temperature is easy to cause damage to the tool, and even the tool may explode. When the existing tool processes the workpiece, a cooling nozzle is usually arranged to spray cooling liquid on the tool and the workpiece, so as to cool the workpiece and the tool and reduce the probability of tool damage. However, when processing the inside of the workpiece, the tool needs to be deeply inserted into the inside of the workpiece. After the cooling liquid is sprayed, it needs to flow for a long time to enter the inside of the workpiece to cool the tool. Because the cooling liquid takes a long time to enter, it is easy to cause damage to the tool. CONTENT OF THE UTILITY MODEL

[0003] In order to reduce the probability of damage to the tool when processing the inside of the workpiece, the present application provides a power head with tool cooling.

[0004] The power head with tool cooling provided by the present application adopts the following technical scheme:

[0005] A power head with tool cooling, comprising a machine body, an input shaft and an output shaft are rotatably arranged on the machine body, an installation hole for installing a tool is formed at one end of the output shaft, a water injection hole is formed at the end of the output shaft away from the installation hole, and the water injection hole is communicated with the installation hole.

[0006] By injecting cooling liquid into the water injection hole, the cooling liquid can directly act on the tool to cool the tool after entering the installation hole, without waiting for the flow of the cooling liquid to penetrate, thereby reducing the probability of damage to the tool when processing the inside of the workpiece.

[0007] Optionally, a cooling pipeline is installed on the machine body, and the water outlet of the cooling pipeline is arranged towards the end of the installation hole of the output shaft.

[0008] By adopting the above technical scheme, the cooling pipeline is used for cooling the tool and the outside of the workpiece, and the simultaneous cooling of the inside and the outside can improve the cooling effect.

[0009] Optionally, a fixing sleeve is threadedly connected to the end of the installation hole of the output shaft, and the tightening direction of the fixing sleeve is opposite to the rotating direction of the output shaft.

[0010] By adopting the technical scheme, the fixing sleeve is used for fixing the cutter, the cutter can be fixed on the output shaft, and the tightening direction of the fixing sleeve is opposite to the rotating direction of the output shaft, so that the probability of the fixing sleeve being loosened and falling off when the output shaft rotates can be reduced.

[0011] Optionally, the machine body is provided with a plurality of positioning columns.

[0012] By adopting the technical scheme, the positioning column is arranged to enable the mounting table to be positioned on the power cutter tower.

[0013] Optionally, the input shaft and the output shaft are the same rotating shaft, the water injection hole is arranged on the side wall of the input shaft, a through hole is arranged on the machine body, and a ring groove is arranged on the side wall of the input shaft.

[0014] By adopting the technical scheme, the input shaft and the output shaft are the same rotating shaft, so that the consumption of power during power transmission can be reduced, and the ring groove is arranged to enable the through hole to be always connected with the water injection hole when the input shaft rotates, so that the cooling liquid can be continuously supplied to the water injection hole.

[0015] Optionally, the input shaft and the output shaft are perpendicular to each other, the input shaft is provided with a driving bevel gear at one end, the output shaft is provided with a driven bevel gear at the middle, and the driving bevel gear and the driven bevel gear are engaged with each other.

[0016] By adopting the technical scheme, the input shaft and the output shaft are perpendicular to each other, so that the direction of the force can be changed, and the power cutter tower does not need to be adjusted to process the workpiece in different directions.

[0017] Optionally, the output shaft is provided with a water injection hole, a wear-resistant sleeve is arranged at one end of the water injection hole, a water injection pipe is arranged on the machine body, and the water injection pipe is rotatably arranged on the wear-resistant sleeve and connected with the water injection hole.

[0018] By adopting the technical scheme, there is rotating friction between the water injection pipe and the output shaft when the output shaft rotates, and long-time friction can easily cause the sealing performance to be reduced, and the wear-resistant sleeve reduces the probability of damage to the connection due to friction and improves the sealing performance.

[0019] In summary, the present application has at least one of the following beneficial technical effects:

[0020] By injecting the cooling liquid into the water injection hole, the cooling liquid can directly act on the cutter after entering the mounting hole to cool the cutter, without waiting for the cooling liquid to flow and penetrate, so that the probability of damage to the cutter when processing the internal part of the workpiece is reduced.

[0021] The cooling pipeline is used for cooling the cutter and the external part of the workpiece, and the cooling effect can be improved by simultaneous cooling of the inside and the outside.

[0022] The fixed sleeve is used for fixing the cutter, so that the cutter can be fixed on the output shaft, the tightening direction of the fixed sleeve is opposite to the rotating direction of the output shaft, so as to reduce the probability that the fixed sleeve is loosened and falls off when the output shaft rotates;

[0023] The input shaft and the output shaft are selected from the same rotating shaft, so as to reduce the power consumption when the power is transmitted, and the ring groove is arranged, so that the through hole is always communicated with the water injection hole when the input shaft rotates, so as to ensure that the cooling liquid can be continuously injected into the water injection hole;

[0024] The input shaft and the output shaft are perpendicular to each other, so that the direction of force can be changed, so that the workpiece can be machined in different directions without adjusting the power cutter tower. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is the overall structure schematic diagram of the embodiment one of the application.

[0026] Figure 2 is the overall structure sectional view of the embodiment one of the application.

[0027] Figure 3 is the overall structure schematic diagram of the embodiment two of the application.

[0028] Figure 4 is the overall structure sectional view of the embodiment two of the application.

[0029] Explanation of reference signs: 1, machine body; 2, input shaft; 3, output shaft; 4, mounting hole; 5, water injection hole; 6, cooling pipeline; 7, fixed sleeve; 8, positioning column; 9, through hole; 10, ring groove; 11, driving bevel gear; 12, driven bevel gear; 13, wear-resistant sleeve; 14, water injection pipe. DETAILED DESCRIPTION

[0030] The following will be described in detail in combination with the accompanying drawings. Figures 1-4 The application will be further described in detail.

[0031] First of all, it needs to be explained here: in the description of the present application, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and other orientation words appear, the orientation or position relationship indicated thereby is based on the orientation or position relationship shown in the drawings, and is only for the convenience of description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application; in addition, if the terms "first", "second", "third" and the like appear, they are only for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, in the present application, unless otherwise explicitly specified and limited, if the terms "mounting", "connecting", "connecting" appear, they should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, interference fit, transition fit and other limit connection, or integral connection; it can be directly connected, or indirectly connected through an intermediate medium; therefore, for those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. Embodiments

[0032] The embodiments of the present application disclose a power head with tool cooling, referring to Figure 1 and Figure 2 , comprising a body 1, an input shaft 2 and an output shaft 3 are rotatably arranged on the body 1, the input shaft 2 is used to connect the power tool tower, which rotates under the power drive of the power tool tower, the output shaft 3 is in transmission connection with the input shaft 2, the input shaft 2 rotates to drive the output shaft 3 to rotate through power transmission, one end of the output shaft 3 is provided with a mounting hole 4 for mounting the tool, by mounting the tool in the mounting hole 4, the rotation of the output shaft 3 driving the tool is realized, the end of the output shaft 3 away from the mounting hole 4 is provided with a water injection hole 5, the water injection hole 5 is connected with a cooling liquid source, the water injection hole 5 is communicated with the mounting hole 4, by injecting cooling liquid in the water injection hole 5, the cooling liquid can directly enter the mounting hole 4, so as to directly act on the tool mounted in the mounting hole 4 to cool the tool, when machining the inside of the workpiece, there is no need to wait for the cooling liquid to seep in from the edge of the machining hole to cool and cool the tool, the time for the tool to be cooled by the cooling liquid is shortened, and the probability of damage to the tool when machining the inside of the workpiece is reduced.

[0033] Referring to Figure 1 and Figure 2 , a cooling pipeline 6 is mounted on the body 1, the cooling pipeline 6 is connected with a cooling liquid source, the water outlet of the cooling pipeline 6 is arranged at the end of the mounting hole 4 of the output shaft 3, the cooling pipeline 6 is used for cooling the tool and the outside of the workpiece, and the cooling effect can be improved by simultaneous cooling inside and outside.

[0034] Referring to Figure 1 and Figure 2, the output shaft 3 is provided with a mounting hole 4, one end of the mounting hole 4 is threadedly connected with a fixing sleeve 7, the tightening direction of the fixing sleeve 7 is opposite to the rotating direction of the output shaft 3, the fixing sleeve 7 is used for fixing the cutter, so that the cutter can be fixed on the output shaft 3, and the tightening direction of the fixing sleeve 7 is opposite to the rotating direction of the output shaft 3, so that the probability that the fixing sleeve 7 is loosened and falls off when the output shaft 3 rotates can be reduced.

[0035] Referring to Figure 1 and Figure 2 , the body 1 is provided with a plurality of positioning columns 8, the mounting hole 4 of the power cutter tower is usually provided with a plug hole, only when the positioning column 8 on the cutter head matches the plug hole, the cutter head can match the power cutter tower, so as to be installed on the cutter tower, the setting of the positioning column 8 can reduce the probability of mechanical failure caused by the mismatching installation of the cutter head and the cutter tower, and the position of the positioning column 8 can also determine whether the installation direction of the cutter head is correct.

[0036] Referring to Figure 1 and Figure 2 , the input shaft 2 and the output shaft 3 are the same rotating shaft, a plurality of bearings are arranged between the body 1 and the rotating shaft to support the installation of the rotating shaft, so that the friction between the rotating shaft and the body 1 can be reduced, the water injection hole 5 is arranged on the side wall of the input shaft 2, the body 1 is provided with a through hole 9, the side wall of the input shaft 2 is provided with an annular groove 10, and the input shaft 2 and the output shaft 3 select the same rotating shaft, so that the power consumption during power transmission can be reduced, but the disadvantage is also obvious, that is, the direction of the power cannot be changed, and the power can only be used when the machining direction is coaxial with the direction of the input shaft 2, and the annular groove 10 is arranged, so that the through hole 9 is always connected with the water injection hole 5 when the input shaft 2 rotates, so that the cooling liquid can be continuously supplied to the water injection hole 5.

[0037] The implementation principle of the embodiment is that the body 1 is installed on the power cutter tower, the input shaft 2 is connected with the power source of the power cutter tower, then the water pipe is connected with the through hole 9 to connect the cooling liquid source, after the cutter is installed in the mounting hole 4, the cutter is fixed by the fixing sleeve 7, the input shaft 2 is driven to rotate by the power source of the power cutter tower, the input shaft 2 drives the cutter to machine the workpiece, at the same time, the cooling liquid enters the annular groove 10 through the through hole 9, and then enters the cutter through the water injection hole 5 to cool the cutter, so that the probability of cutter damage during machining can be reduced. Embodiment

[0038] The difference between the embodiment and the first embodiment is that the power transmission mode of the input shaft 2 and the output shaft 3 of the embodiment is different from that of the first embodiment.

[0039] Referring to Figure 1 and Figure 2 Figure 3 Figure 4The input shaft 2 and the output shaft 3 are perpendicular to each other, the input shaft 2 is provided with a driving bevel gear 11 at one end, the output shaft 3 is provided with a driven bevel gear 12 in the middle, the driving bevel gear 11 and the driven bevel gear 12 are engaged with each other, the input shaft 2 and the output shaft 3 which are perpendicular to each other can change the direction of force, so that the workpiece can be processed in different directions without adjusting the power tool turret, and different angles of the driving bevel gear 11 and the driven bevel gear 12 can be selected according to actual needs, so that power transmission between the input shaft 2 and the output shaft 3 with different angles is realized; the output shaft 3 is provided with a water injection hole 5, one end of which is provided with a wear-resistant sleeve 13, and the machine body 1 is provided with a water injection pipe 14 which is rotatably arranged on the wear-resistant sleeve 13 and communicates with the water injection hole 5, and there is rotational friction between the water injection pipe 14 and the output shaft 3 when the output shaft 3 rotates, and long-time friction can easily lead to a decrease in sealing performance, and the wear-resistant sleeve 13 reduces the probability of damage to the connection due to friction and improves the sealing performance.

[0040] The implementation principle of the embodiment of the application is that the machine body 1 is installed with the power tool turret, the input shaft 2 is connected with the power source of the power tool turret, then the water pipe is connected to the through hole 9 to communicate with the cooling liquid source, after the tool is installed in the mounting hole 4, the tool is fixed by the mounting fixing sleeve 7, the input shaft 2 is driven to rotate by the power source of the power tool turret, the input shaft 2 drives the driving bevel gear 11 to rotate, the driving bevel gear 11 drives the driven bevel gear to rotate through engagement so as to drive the output shaft 3 to rotate, the output shaft 3 drives the tool to process the workpiece, at the same time, the cooling liquid enters the water injection hole 5 through the water injection pipe 14, and then is injected into the tool through the water injection hole 5 to cool the tool and reduce the probability of tool damage during processing.

[0041] It should be noted that the above embodiments are only used to illustrate the application and not to limit the technical solutions described in the application, although the application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the skilled in the art can still modify or equivalently replace the application, and all technical solutions and improvements which do not deviate from the spirit and scope of the application should be covered in the scope of the claims of the application.

Claims

1. A power head with tool cooling, comprising a body (1), wherein an input shaft (2) and an output shaft (3) are rotatably disposed on the body (1), and one end of the output shaft (3) is provided with a mounting hole (4) for mounting a tool, characterized in that: The output shaft (3) has a water injection hole (5) at the end away from the mounting hole (4), and the water injection hole (5) is connected to the mounting hole (4).

2. The power head with tool cooling according to claim 1, characterized in that: The machine body (1) is equipped with a cooling pipe (6), and the outlet of the cooling pipe (6) is set with a mounting hole (4) facing the output shaft (3).

3. A power head with tool cooling according to claim 2, characterized in that: The output shaft (3) has a mounting hole (4) and a fixed sleeve (7) is threaded to one end. The tightening direction of the fixed sleeve (7) is opposite to the rotation direction of the output shaft (3).

4. A power head with tool cooling according to claim 3, characterized in that: The body (1) is equipped with several positioning posts (8).

5. A power head with tool cooling according to claim 4, characterized in that: The input shaft (2) and the output shaft (3) are the same rotating shaft. The water injection hole (5) is opened on the side wall of the input shaft (2). The body (1) is provided with a through hole (9). The side wall of the input shaft (2) is provided with an annular groove (10).

6. A power head with tool cooling according to claim 4, characterized in that: The input shaft (2) and the output shaft (3) are perpendicular to each other. One end of the input shaft (2) is equipped with a driving bevel gear (11), and the middle of the output shaft (3) is equipped with a driven bevel gear (12). The driving bevel gear (11) and the driven bevel gear (12) mesh with each other.

7. A power head with tool cooling according to claim 6, characterized in that: The output shaft (3) has a water injection hole (5) and a wear-resistant sleeve (13) is fitted at one end. A water injection pipe (14) is installed on the body (1). The water injection pipe (14) is rotatably mounted on the wear-resistant sleeve (13) and connected to the water injection hole (5).

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