Large-torque and high-rigidity axial power tool apron

Abstract

The utility model provides a large-torque and high-rigidity axial power tool apron, which relates to the field of machining tools and comprises a tool apron body, a power transmission shaft, an intermediate shaft and an output shaft are arranged in the tool apron body through bearings, a first bevel gear is sleeved at one end of the intermediate shaft, a first cylindrical gear is sleeved at the other end of the intermediate shaft, and a second bevel gear is sleeved at one end of the power transmission shaft. One end of the output shaft is sleeved with a second cylindrical gear, the number of teeth of the first cylindrical gear is smaller than that of teeth of the second cylindrical gear, the first cylindrical gear and the second cylindrical gear are in meshed transmission, and the power transmission shaft drives the output shaft to rotate through the middle shaft; compared with an existing transmission mode that a power transmission shaft is directly connected with an output shaft, low-rotating-speed output is achieved through the difference of the tooth number, the rotating speed of the output shaft can be reduced, the torque of the output shaft is increased, and the situation that when large-size threads are machined, the threads are stuck is avoided.

Description

Technical Field

[0001] The utility model relates to the field of machining tools, in particular to an axial power tool holder with large torque and high rigidity. Background Art

[0002] Usually, when a lathe processes a workpiece, the processing is achieved through a power tool holder installed on the lathe turret. When processing the workpiece, the power tool holder will achieve rapid processing of the workpiece by increasing the rotation speed. For example, the existing power tool holder patent number is: CN214979244U, a new type of turning and milling power tool holder, which processes the workpiece by directly driving the rotation of the power spindle through the bevel teeth of the transmission spindle. However, when processing large-sized screw threads, the power spindle needs to have a large torque. According to the formula: power (N·m / s) = torque (N·m) × speed (r / min) / 60, the power spindle torque is increased by reducing the speed of the power spindle while the power remains unchanged. The speed reduction of the existing power tool holder is mainly achieved through the turret, but the lowest speed of the turret can only be reduced to 5000r / min. Obviously, the method of increasing the torque of the power transmission shaft by reducing the speed of the turret is limited, which causes the power tool holder to get stuck when processing large-sized screw threads. Utility Model Content

[0003] The utility model provides a large-torque, high-rigidity axial power tool holder, aiming to improve the problem that the existing power tool holder cannot reduce the rotation speed to increase the torque.

[0004] The utility model is implemented as follows: a large torque, high rigidity axial power tool holder, comprising: a tool holder body, a power transmission shaft, an intermediate shaft and an output shaft are arranged in the tool holder body through bearings, one end of the intermediate shaft is sleeved with a first bevel gear, and the other end is sleeved with a first cylindrical gear, one end of the power transmission shaft is sleeved with a second bevel gear, the first bevel gear and the second bevel gear are meshed for transmission, one end of the output shaft is sleeved with a second cylindrical gear, the number of teeth of the first cylindrical gear is less than the number of teeth of the second cylindrical gear, and the first cylindrical gear and the second cylindrical gear are meshed for transmission.

[0005] Furthermore, the output shaft is mounted in the tool holder body via a pair of tapered roller bearings.

[0006] Furthermore, a tapered roller bearing is installed on a side of the intermediate shaft close to the first cylindrical gear, and a deep groove ball bearing is installed on a side of the intermediate shaft close to the first bevel gear.

[0007] Furthermore, both ends of the power transmission shaft are vertically mounted in the tool holder body through angular contact bearings.

[0008] Furthermore, a tool holder is provided at one end of the output shaft away from the second cylindrical gear.

[0009] Furthermore, a cooling nozzle is further arranged on the side of the tool holder body.

[0010] The beneficial effects of the utility model are:

[0011] The utility model comprises a tool holder body, a power transmission shaft, an intermediate shaft and an output shaft arranged in the tool holder body through bearings, a first bevel gear is sleeved on one end of the intermediate shaft, a first cylindrical gear is sleeved on the other end, a second bevel gear is sleeved on one end of the power transmission shaft, the first bevel gear and the second bevel gear are meshed for transmission, a second cylindrical gear is sleeved on one end of the output shaft, the number of teeth of the first cylindrical gear is less than the number of teeth of the second cylindrical gear, the first cylindrical gear and the second cylindrical gear are meshed for transmission, the power transmission shaft drives the output shaft to rotate through the intermediate shaft, and low-speed output is achieved through the difference in the number of teeth. Compared with the existing transmission method in which the power transmission shaft is directly connected to the output shaft, the speed of the output shaft can be reduced, the torque of the output shaft can be increased, and the jamming situation when processing large-size screw threads can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] 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.

[0013] Figure 1 It is a cross-sectional view of the large torque and high rigidity axial power tool holder described in the embodiment of the utility model.

[0014] Reference numerals:

[0015] 10. Tool holder body; 101. Power transmission shaft; 1011. Second bevel gear; 102. Intermediate shaft; 1021. First bevel gear; 1022. First cylindrical gear; 103. Output shaft; 1031. Second cylindrical gear; 1032. Tapered roller bearing; 1033. Tool holder; 104. Cooling nozzle. DETAILED DESCRIPTION

[0016] 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.

[0017] 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.

[0018] 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.

[0019] Example

[0020] Please refer to Figure 1As shown, this embodiment provides a large torque, high rigidity axial power tool holder, including a tool holder body 10, in which a power transmission shaft 101, an intermediate shaft 102 and an output shaft 103 are arranged through bearings. Specifically, both ends of the power transmission shaft 101 are vertically installed in the tool holder body 10 through angular contact bearings as the power input connecting the power tool holder, and the output shaft 103 is horizontally installed in the tool holder body 10 through a pair of tapered roller bearings 1032. The output shaft 103 directly outputs the aligned workpiece, and the tapered roller bearings 1032 at both ends can withstand the axial thrust of the output shaft 103, so that the output shaft 103 has sufficient rigidity; the tapered roller bearing 1032 is installed on the side of the intermediate shaft 102 close to the first cylindrical gear 1022, and the deep groove ball bearing is installed on the side close to the first bevel gear 1021. One end of the intermediate shaft 102 is meshed with the output shaft 103 for transmission, and the tapered roller bearing 1032 is installed on the meshed transmission end to withstand the pressure of the output shaft 103 on the intermediate shaft 102. Furthermore, a tool holder 1033 is provided at one end of the output shaft 103 away from the second cylindrical gear 1031 . The tool holder 1033 is used to quickly install a milling cutter. The output shaft 103 drives the milling cutter to perform milling processing on a workpiece.

[0021] Please refer to Figure 1 As shown, a first bevel gear 1021 is sleeved on one end of the intermediate shaft 102, and a first cylindrical gear 1022 is sleeved on the other end; a second bevel gear 1011 is sleeved on one end of the power transmission shaft 101, and the first bevel gear 1021 and the second bevel gear 1011 are meshed for transmission; a second cylindrical gear 1031 is sleeved on one end of the output shaft 103, and the number of teeth of the first cylindrical gear 1022 is less than the number of teeth of the second cylindrical gear 1031, and the first cylindrical gear 1022 and the second cylindrical gear 1031 are meshed for transmission. Specifically, the power transmission shaft 101 rotates to drive the intermediate shaft 102 to rotate through the meshing of the second bevel gear 1011 and the first bevel gear 1021. The intermediate shaft 102 drives the output shaft 103 to rotate through the meshing of the first cylindrical gear 1022 and the second cylindrical gear 1031. In this embodiment, the number of teeth of the second cylindrical gear 1031 is twice the number of teeth of the first cylindrical gear 1022. According to the transmission ratio formula: transmission ratio = number of teeth of the driving wheel / number of teeth of the driven wheel, the transmission ratio is 1 / 2, that is, the rotation speed of the output shaft 103 is half of the rotation speed of the intermediate shaft 102, thereby achieving the effect of reducing speed and increasing torque.

[0022] In addition, a cooling nozzle 104 is further provided on the side of the tool holder body 10. During the process of machining the workpiece, a cooling liquid is sprayed on the workpiece, which is beneficial to chip removal of the workpiece and prevents the workpiece from getting stuck during the machining of the thread.

[0023] 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 torque, high rigidity axial power tool holder, characterized in that: include: A tool holder body, wherein a power transmission shaft, an intermediate shaft and an output shaft are arranged in the tool holder body through bearings, a first bevel gear is sleeved on one end of the intermediate shaft, and a first cylindrical gear is sleeved on the other end, a second bevel gear is sleeved on one end of the power transmission shaft, the first bevel gear and the second bevel gear are meshed for transmission, a second cylindrical gear is sleeved on one end of the output shaft, the number of teeth of the first cylindrical gear is less than the number of teeth of the second cylindrical gear, and the first cylindrical gear and the second cylindrical gear are meshed for transmission.

2. The high torque, high rigidity axial power tool holder according to claim 1, characterized in that: The output shaft is mounted in the tool holder body via a pair of tapered roller bearings.

3. The high torque, high rigidity axial dynamic tool holder according to claim 1, characterized in that: A tapered roller bearing is installed on a side of the intermediate shaft close to the first cylindrical gear, and a deep groove ball bearing is installed on a side of the intermediate shaft close to the first bevel gear.

4. The high torque, high rigidity axial power tool holder according to claim 1, characterized in that: The two ends of the power transmission shaft are vertically installed in the tool holder body through angular contact bearings.

5. The high torque, high rigidity axial power tool holder according to claim 1, characterized in that: A tool holder is disposed at one end of the output shaft away from the second cylindrical gear.

6. The high torque, high rigidity axial power tool holder according to claim 1, characterized in that: A cooling nozzle is further arranged on the side of the tool holder body.

Images