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 heads, and in particular to a power head with tool cooling. Background Art

[0002] The power head, also known as the power tool holder, refers to the tool holder installed on the power turret and driven by a servo motor. After the tool is installed on the power head, the tool is driven by power to process the workpiece. During the processing, the temperature of the contact surface between the tool and the workpiece will rise rapidly due to high-speed friction. High temperature can easily cause damage to the tool and even tool explosion. When processing workpieces, existing tools usually set a cooling nozzle to spray coolant on the tool and workpiece, thereby cooling the workpiece and tool and reducing the probability of tool damage. However, when processing the inside of the workpiece, the tool needs to go deep into the workpiece. After the coolant is sprayed, it needs to flow for a long time before it can enter the workpiece to cool the tool. Since the coolant takes a long time to enter, it is easy to cause damage to the tool. Summary of the invention

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

[0004] The present application provides a power head with tool cooling, which adopts the following technical solution: A power head with tool cooling comprises a body, an input shaft and an output shaft are rotatably arranged on the body, one end of the output shaft is provided with a mounting hole for mounting the tool, and one end of the output shaft away from the mounting hole is provided with a water injection hole, and the water injection hole is connected to the mounting hole.

[0005] By adopting the above technical solution, by injecting coolant into the water injection hole, the coolant can directly act on the tool to cool the tool after entering the mounting hole, without waiting for the coolant to flow and penetrate, thereby reducing the probability of tool damage when processing the inside of the workpiece.

[0006] Optionally, a cooling pipe is installed on the machine body, and a water outlet of the cooling pipe is arranged at one end of the mounting hole facing the output shaft.

[0007] By adopting the above technical solution, the cooling pipe is used for cooling the tool and the outside of the workpiece, and the cooling effect can be improved by simultaneous internal and external cooling.

[0008] Optionally, one end of the output shaft having a mounting hole is threadedly connected to a fixing sleeve, and the tightening direction of the fixing sleeve is opposite to the rotation direction of the output shaft.

[0009] By adopting the above technical solution, the fixing sleeve is used to fix the tool so that the tool can be installed and fixed on the output shaft. The tightening direction of the fixing sleeve is opposite to the rotation direction of the output shaft, which can reduce the probability of the fixing sleeve being loosened and falling when the output shaft rotates.

[0010] Optionally, a plurality of positioning columns are installed on the machine body.

[0011] By adopting the above technical solution, the setting of the positioning column enables the mounting platform to be positioned on the power turret.

[0012] Optionally, the input shaft and the output shaft are the same rotating shaft, the water injection hole is provided on the side wall of the input shaft, a through hole is provided on the machine body, and an annular groove is provided on the side wall of the input shaft.

[0013] By adopting the above technical solution, the input shaft and the output shaft use the same rotating shaft to reduce the power consumption during power transmission. The opening of the annular groove can ensure that the through hole is always connected to the water injection hole when the input shaft rotates, thereby ensuring that coolant can be continuously introduced into the water injection hole.

[0014] Optionally, the input shaft and the output shaft are perpendicular to each other, a driving bevel gear is installed at one end of the input shaft, a driven bevel gear is installed in the middle of the output shaft, and the driving bevel gear and the driven bevel gear are meshed with each other.

[0015] By adopting the above technical solution, the input shaft and the output shaft that are perpendicular to each other can change the direction of the force, so that the workpiece can be processed in different directions without adjusting the power turret.

[0016] Optionally, the output shaft is provided with a water injection hole and one end is sleeved with a wear-resistant sleeve, and a water injection pipe is installed on the machine body. The water injection pipe is rotatably arranged on the wear-resistant sleeve and connected to the water injection hole.

[0017] By adopting the above technical solution, there is rotational friction between the water injection pipe and the output shaft when the output shaft rotates. Long-term friction can easily lead to a decrease in sealing performance. The provision of the wear-resistant sleeve reduces the probability of damage to the connection due to friction and improves the sealing performance.

[0018] In summary, the present application includes at least one of the following beneficial technical effects: By injecting coolant into the water injection hole, the coolant can directly act on the tool to cool the tool after entering the installation hole, without waiting for the coolant to flow and penetrate, thereby reducing the probability of tool damage when processing the inside of the workpiece; The cooling channel is used to cool the tool and the outside of the workpiece. The cooling effect can be improved by cooling the inside and outside at the same time. The fixing sleeve is used to fix the tool so that the tool can be installed and fixed on the output shaft. The tightening direction of the fixing sleeve is opposite to the rotation direction of the output shaft, which can reduce the probability of the fixing sleeve being loosened and falling when the output shaft rotates; The input shaft and the output shaft use the same rotating shaft to reduce the power consumption during power transmission. The opening of the annular groove can make the through hole always connected to the water injection hole when the input shaft rotates, thereby ensuring that the coolant can be continuously introduced into the water injection hole. The mutually perpendicular input and output shafts can change the direction of the force, thereby eliminating the need to adjust the power turret to process the workpiece in different directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application.

[0020] Figure 2 It is a cross-sectional view of the overall structure of Example 1 of the present application.

[0021] Figure 3 It is a schematic diagram of the overall structure of the second embodiment of the present application.

[0022] Figure 4 It is a cross-sectional view of the overall structure of the second embodiment of the present application.

[0023] Explanation of the accompanying drawings: 1. body; 2. input shaft; 3. output shaft; 4. mounting hole; 5. water injection hole; 6. cooling pipe; 7. fixing sleeve; 8. positioning column; 9. through hole; 10. annular groove; 11. driving bevel gear; 12. driven bevel gear; 13. wear-resistant sleeve; 14. water injection pipe. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1-4 This application is described in further detail.

[0025] First of all, it should be noted that in the description of this application, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and other directional words appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of this application; in addition, if the terms "first", "second", "third" and other numerical quantifiers appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", and "connected" appear, they should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection, a limited connection such as an interference fit, a transition fit, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium; therefore, for ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. Example

[0026] The present application embodiment discloses a power head with tool cooling, referring to Figure 1 and Figure 2 , including a body 1, on which an input shaft 2 and an output shaft 3 are rotatably arranged, the input shaft 2 is used to connect the power turret, and rotates under the power drive of the power turret, the output shaft 3 is transmission connected with the input shaft 2, and the input shaft 2 rotates and drives the output shaft 3 to rotate through power transmission, a mounting hole 4 for mounting a tool is opened at one end of the output shaft 3, and the tool is mounted in the mounting hole 4, so that the output shaft 3 drives the tool to rotate, and a water injection hole 5 is opened at the end of the output shaft 3 away from the mounting hole 4, the water injection hole 5 is connected to a coolant source, and the water injection hole 5 is connected to the mounting hole 4, and the coolant is injected into the water injection hole 5, so that the coolant can directly pass into the mounting hole 4, thereby directly acting on the tool mounted in the mounting hole 4 to cool the tool, and when processing the inside of the workpiece, there is no need to wait for the coolant to flow and penetrate from the edge of the processing hole to cool the tool, which shortens the time for the tool to be cooled by the coolant, and reduces the probability of damage to the tool when processing the inside of the workpiece.

[0027] Reference Figure 1 and Figure 2 A cooling pipe 6 is installed on the machine body 1, and the cooling pipe 6 is connected to a coolant source. The water outlet of the cooling pipe 6 is arranged toward one end of the mounting hole 4 provided on the output shaft 3. The cooling pipe 6 is used for cooling the tool and the outside of the workpiece. The cooling effect can be improved by cooling the inside and the outside simultaneously.

[0028] Reference Figure 1 and Figure 2 The output shaft 3 has a mounting hole 4 at one end which is threadedly connected with a fixing sleeve 7. The tightening direction of the fixing sleeve 7 is opposite to the rotation direction of the output shaft 3. The fixing sleeve 7 is used to fix the tool so that the tool can be installed and fixed on the output shaft 3. The tightening direction of the fixing sleeve 7 is opposite to the rotation direction of the output shaft 3, which can reduce the probability of the fixing sleeve 7 being loosened and falling off when the output shaft 3 rotates.

[0029] Reference Figure 1 and Figure 2 A plurality of positioning columns 8 are installed on the machine body 1. A socket is usually provided at the mounting hole 4 for mounting the cutter head on the power turret. Only when the positioning column 8 on the cutter head is matched with the socket, the cutter head can be matched with the power turret and thus installed on the turret. The setting of the positioning column 8 can reduce the probability of mechanical failure caused by mismatched installation of the cutter head and the turret. At the same time, the position of the positioning column 8 can also determine whether the direction of the cutter head installation is correct.

[0030] Reference Figure 1 and Figure 2The input shaft 2 and the output shaft 3 are the same rotating shaft. A number of bearings are arranged between the machine body 1 and the rotating shaft to support the installation of the rotating shaft, which can also reduce the friction between the rotating shaft and the machine body 1. The water injection hole 5 is opened on the side wall of the input shaft 2, a through hole 9 is opened on the machine body 1, and an annular groove 10 is opened on the side wall of the input shaft 2. The input shaft 2 and the output shaft 3 use the same rotating shaft to reduce the power consumption during power transmission, but the disadvantage is also obvious that the direction of the power cannot be changed. It can only be used when the processing direction is in the same direction and coaxial with the input shaft 2. The opening of the annular groove 10 can make the through hole 9 always connected to the water injection hole 5 when the input shaft 2 rotates, thereby ensuring that the coolant can be continuously introduced into the water injection hole 5.

[0031] The implementation principle of the embodiment of the present application is: the body 1 is installed on the power turret, the input shaft 2 is connected to the power source of the power turret, and then a water pipe is connected to the through hole 9 to connect to the coolant source. After the tool is installed in the mounting hole 4, the tool is fixed by installing the fixing sleeve 7, and the input shaft 2 is driven to rotate by the power source of the power turret. The input shaft 2 drives the tool to process the workpiece. At the same time, the coolant enters the annular groove 10 through the through hole 9, and is then injected into the tool through the water injection hole 5 to cool the tool, thereby reducing the probability of tool damage during processing. Example

[0032] The difference between this embodiment and the first embodiment is that the power transmission mode of the input shaft 2 and the output shaft 3 of this embodiment is different from that of the first embodiment.

[0033] Reference Figure 3 and Figure 4 The input shaft 2 and the output shaft 3 are perpendicular to each other, and a driving bevel gear 11 is installed at one end of the input shaft 2, and a driven bevel gear 12 is installed in the middle of the output shaft 3. The driving bevel gear 11 and the driven bevel gear 12 are meshed with each other. The input shaft 2 and the output shaft 3 that are perpendicular to each other can change the direction of the force, so that there is no need to adjust the power turret to process the workpiece in different directions. The driving bevel gear 11 and the driven bevel gear 12 with different angles can also be selected according to actual needs, so as to realize power transmission at different angles between the input shaft 2 and the output shaft 3; the output shaft 3 is provided with a water injection hole 5 and one end is provided with a wear-resistant sleeve 13, and a water injection pipe 14 is installed on the body 1. The water injection pipe 14 is rotatably arranged on the wear-resistant sleeve 13 and is connected to the water injection hole 5. When the output shaft 3 rotates, there is rotational friction between the water injection pipe 14 and the output shaft 3. Long-term friction is likely to cause a decrease in sealing performance. The setting of the wear-resistant sleeve 13 reduces the probability of damage to the connection due to friction and improves the sealing performance.

[0034] The implementation principle of the embodiment of the present application is as follows: the machine body 1 is installed on the power turret, so that the input shaft 2 is connected to the power source of the power turret, and then a water pipe is connected to the through hole 9 to connect to the coolant source. After the tool is installed in the installation hole 4, the tool is fixed by installing the fixing sleeve 7, and the input shaft 2 is driven to rotate by the power source of the power turret. The input shaft 2 drives the active bevel gear 11 to rotate, and the active bevel gear 11 drives the slave bevel gear to rotate through meshing, thereby driving the output shaft 3 to rotate, and the output shaft 3 drives the tool to process the workpiece. At the same time, the coolant 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, thereby reducing the probability of tool damage during processing.

[0035] It should be noted that the above embodiments are only used to illustrate the present application and are not intended to limit the technical solutions described in the present application. Although the present application has been described in detail in this specification with reference to the above embodiments, a person of ordinary skill in the art should understand that a person of ordinary skill in the art can still modify or make equivalent substitutions to the present application, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present application should be included in the scope of the claims of the present application.

Claims

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

2. A power head with tool cooling according to claim 1, characterized in that: A cooling pipe (6) is installed on the machine body (1), and a water outlet of the cooling pipe (6) is arranged toward one end of the output shaft (3) where a mounting hole (4) is opened.

3. A power head with tool cooling according to claim 2, characterized in that: The output shaft (3) is provided with a mounting hole (4) and one end thereof is threadedly connected with a fixing sleeve (7), and the tightening direction of the fixing 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: A plurality of positioning columns (8) are installed on the machine body (1).

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 provided on the side wall of the input shaft (2), a through hole (9) is provided on the machine body (1), and an annular groove (10) is provided on the side wall of the input shaft (2).

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; a driving bevel gear (11) is mounted on one end of the input shaft (2); a driven bevel gear (12) is mounted on the middle of the output shaft (3); the driving bevel gear (11) and the driven bevel gear (12) are meshed with each other.

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

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