A semi-automatic center hole drilling device

Abstract

The utility model relates to a kind of semi-automatic center drilling device, including box, pneumatic drive, electric drilling mechanism, self-centering three-jaw chuck and workpiece support assembly.Pneumatic drive and electric drilling mechanism are set in box, self-centering three-jaw chuck and workpiece support assembly are connected on the outer wall of box, and with self-centering three-jaw chuck same side setting.Electric drilling mechanism includes spline shaft sleeve, spline shaft, drill bit and motor, spline shaft sleeve rotation setting is in box, and with motor transmission connection, spline shaft sleeve is set in spline shaft sleeve, drill bit is connected in the end of spline shaft, motor drives spline shaft sleeve rotation to drive spline shaft rotation.Pneumatic drive is used to drive spline shaft movement to drive drill bit top into workpiece in self-centering three-jaw chuck.This device realizes the quick drilling operation of bar metal workpiece, greatly reduces labor intensity, improves production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of drilling device technology, specifically to a semi-automatic device for drilling center holes. Background Technology

[0002] In the production process, some steps require drilling holes on the end face of a bar-shaped metal workpiece. Traditional center hole drilling operations usually rely on manual operation on a lathe. Such lathes generally have the drill bit set up vertically. When drilling, the bar-shaped metal workpiece is clamped in vertical position, and then the drill bit is used to drill the end face of the workpiece. The problem is that the labor intensity is high, the efficiency is low, and it is not ideal for mass production. Especially in mass production, the traditional method is difficult to meet the requirements of high efficiency and high precision. Utility Model Content

[0003] The purpose of this invention is to provide a semi-automatic center hole drilling device to solve the aforementioned problems of current center hole drilling devices.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A semi-automatic center hole drilling device includes a housing, a pneumatic drive unit, an electric drilling mechanism, a self-centering three-jaw chuck, and a workpiece support assembly. The pneumatic drive unit and the electric drilling mechanism are disposed within the housing. The self-centering three-jaw chuck is disposed on the outer wall of the housing. The workpiece support assembly is connected to the outer wall of the housing and is disposed on the same side as the self-centering three-jaw chuck. The electric drilling mechanism includes a splined bushing, a splined shaft, a drill bit, and a motor. The splined bushing is rotatably disposed within the housing and is driven by the motor. The drill bit is connected to the end of the splined shaft. The motor drives the splined bushing to rotate, thereby driving the splined shaft to rotate. The pneumatic drive unit is used to drive the splined shaft to move, thereby driving the drill bit to push into the workpiece clamped in the self-centering three-jaw chuck.

[0006] Furthermore, an installation sleeve is provided on the inner wall of the housing, and the splined bushing is rotatably disposed in the installation sleeve via a bearing. A first pulley is provided at the end of the splined bushing, and a second pulley is provided on the motor. A belt is provided between the first pulley and the second pulley, and the motor is connected to the splined bushing for transmission via the belt.

[0007] Furthermore, a drill bit clamp is provided at the end of the spline shaft away from the pneumatic drive component, the drill bit clamp being used to clamp the drill bit.

[0008] Furthermore, the pneumatic drive component includes a cylinder and an air compressor. The air compressor is disposed in the housing and connected to the cylinder. The cylinder is disposed correspondingly to the spline shaft, and a thrust ball bearing is disposed at the end of the output shaft of the cylinder. The cylinder is used to drive the spline shaft to move.

[0009] Furthermore, the workpiece support assembly includes a support plate and a support base. The support plate is horizontally disposed on the outside of the housing, and the support base is slidably disposed on the support plate. The support base is used to support the workpiece to be drilled.

[0010] Furthermore, the support plate is provided with a guide rail, a slider is slidably disposed on the guide rail, and the support base is disposed on the slider.

[0011] Furthermore, the support base is U-shaped, and a stud is provided at the lower end of the support base. The slider is provided with a threaded hole, and the stud is threadedly connected in the threaded hole.

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

[0013] This utility model's semi-automatic center hole drilling device, through the cooperation of an electric drilling mechanism and a pneumatic drive, realizes automatic drilling of rod-shaped metal workpieces, greatly reducing the labor intensity of manual operation and improving production efficiency. Because it uses a self-centering three-jaw chuck to hold the workpiece, it ensures the stability of the workpiece during the drilling process, thereby improving drilling accuracy and consistency. By adjusting the position of the workpiece support components, this device can be applied to workpieces of different lengths, enhancing its versatility and flexibility. Compared with the traditional manual operation of lathes, this device can significantly improve production efficiency in mass production environments, meeting the demands of high-efficiency and high-precision production. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the semi-automatic center hole drilling device of this utility model;

[0015] Figure 2 yes Figure 1 A structural diagram from another angle;

[0016] Figure 3 This is a schematic diagram of the electric drilling mechanism in the semi-automatic center hole drilling device of this utility model;

[0017] Figure 4 This is a schematic diagram of the cylinder and spline shaft in the semi-automatic center hole drilling device of this utility model.

[0018] The names corresponding to each mark in the diagram:

[0019] 1. Housing; 11. Mounting sleeve; 2. Pneumatic drive component; 21. Cylinder; 22. Air compressor; 23. Thrust ball bearing; 3. Electric drilling mechanism; 31. Splined bushing; 32. Splined shaft; 34. Motor; 35. First pulley; 36. Second pulley; 37. Belt; 38. Drill bit chuck; 4. Self-centering three-jaw chuck; 5. Workpiece support assembly; 51. Support plate; 52. Support base; 53. Guide rail; 54. Slider; 55. Stud. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] This specific embodiment provides a semi-automatic device for drilling center holes, such as... Figures 1-4 As shown, it mainly includes a housing 1, a pneumatic drive component 2, an electric drilling mechanism 3, a self-centering three-jaw chuck 4, and a workpiece support assembly 5.

[0022] Figure 1 As shown, the housing 1 serves as the main structure of the entire device, and its interior is provided with space for installing and fixing other components. The outer wall of the housing 1 is provided with mounting positions for fixing the self-centering three-jaw chuck 4 and the workpiece support assembly 5.

[0023] Figures 2-4 As shown, the pneumatic drive unit 2 includes a cylinder 21 and an air compressor 22. The air compressor 22 is located inside the housing 1 and connected to the cylinder 21, providing an air source for the cylinder 21. A thrust ball bearing 23 is provided at the end of the output shaft of the cylinder 21 for driving the spline shaft 32 to move. The cylinder 21 and the spline shaft 32 are correspondingly arranged to ensure that the cylinder 21 can accurately drive the spline shaft 32 to move.

[0024] Figure 3 and Figure 4 As shown, the electric drilling mechanism 3 includes a splined bushing 31, a splined shaft 32, a drill bit, and a motor 34. The splined bushing 31 is rotatably disposed inside the housing 1 and is rotatably mounted in the mounting sleeve 11 via bearings. The mounting sleeve 11 is disposed on the inner wall of the housing 1. A first pulley 35 is provided at the end of the splined bushing 31, and a second pulley 36 is provided on the motor 34. The first pulley 35 and the second pulley 36 are connected by a belt 37 to realize the transmission connection between the motor 34 and the splined bushing 31. The splined shaft 32 is sleeved inside the splined bushing 31 and can slide along the splined bushing 31. The drill bit is connected to the end of the splined shaft 32. The motor 34 drives the splined bushing 31 to rotate, thereby driving the splined shaft 32 and the drill bit to rotate. A drill bit clamp 38 is provided at the end of the splined shaft 32 away from the pneumatic drive component 2 to clamp the drill bit and ensure the stability of the drill bit during the drilling process.

[0025] A self-centering three-jaw chuck 4 is mounted on the outer wall of the housing 1 and is used to clamp the rod-shaped metal workpiece to be drilled. When the workpiece is clamped in the self-centering three-jaw chuck 4, the central axis of the workpiece is aligned with the axis of the drill bit, ensuring the accuracy of drilling.

[0026] Figure 1 As shown, the workpiece support assembly 5 includes a support plate 51 and a support base 52. The support plate 51 is horizontally disposed on the outside of the housing 1 and on the same side as the self-centering three-jaw chuck 4. The support base 52 is slidably disposed on the support plate 51 to support the workpiece to be drilled. A guide rail 53 is provided on the support plate 51, and a slider 54 is slidably disposed on the guide rail 53. The support base 52 is disposed on the slider 54, and the position of the support base 52 is adjusted by sliding the slider 54 on the guide rail 53. The support base 52 is U-shaped, and a stud 55 is provided at its lower end. A threaded hole is provided on the slider 54, and the stud 55 is threaded into the threaded hole. By rotating the stud 55, the support base 52 can be fixed on the support plate 51 and its position adjusted.

[0027] Workflow:

[0028] In operation, the rod-shaped metal workpiece to be drilled is first clamped in the self-centering three-jaw chuck 4 and supported by the workpiece support assembly 5. Then, the motor 34 is started, driving the splined bushing 31 to rotate via the belt 37, which in turn drives the splined shaft 32 and the drill bit to rotate. Simultaneously, the pneumatic drive 2 is activated, and the output shaft of the cylinder 21 extends under the action of the air compressor, pushing the splined shaft 32 towards the workpiece via the thrust ball bearing, causing the drill bit to penetrate the workpiece for drilling. After drilling is completed, the output shaft of the cylinder 21 retracts. By adjusting the position of the workpiece support assembly 5, drilling operations can be performed on workpieces of different lengths.

[0029] The semi-automatic center hole drilling device provided in this specific embodiment realizes automatic drilling of rod-shaped metal workpieces through the cooperation of electric drilling mechanism and pneumatic drive component, reducing labor intensity, improving work efficiency and drilling accuracy, and is suitable for the needs of mass production.

[0030] Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model are within the protection scope of this utility model.

Claims

1. A semi-automatic device for drilling center holes, characterized in that: The device includes a housing, a pneumatic drive unit, an electric drilling mechanism, a self-centering three-jaw chuck, and a workpiece support assembly. The pneumatic drive unit and the electric drilling mechanism are disposed inside the housing. The self-centering three-jaw chuck is disposed on the outer wall of the housing. The workpiece support assembly is connected to the outer wall of the housing and is disposed on the same side as the self-centering three-jaw chuck. The electric drilling mechanism includes a splined bushing, a splined shaft, a drill bit, and a motor. The splined bushing is rotatably disposed in the housing and is driven by the motor. The splined shaft is disposed in the splined bushing. The drill bit is connected to the end of the splined shaft. The motor drives the splined bushing to rotate, thereby driving the splined shaft to rotate. The pneumatic drive unit is used to drive the splined shaft to move, thereby driving the drill bit to push into the workpiece clamped in the self-centering three-jaw chuck.

2. The semi-automatic center hole drilling device according to claim 1, characterized in that: An installation sleeve is provided on the inner wall of the housing. The splined bushing is rotatably mounted in the installation sleeve via a bearing. A first pulley is provided at the end of the splined bushing. A second pulley is provided on the motor. A belt is provided between the first pulley and the second pulley. The motor is connected to the splined bushing via the belt.

3. The semi-automatic center hole drilling device according to claim 1, characterized in that: The spline shaft is provided with a drill bit clamp at the end away from the pneumatic drive component, and the drill bit clamp is used to clamp the drill bit.

4. The semi-automatic center hole drilling device according to claim 1, characterized in that: The pneumatic drive unit includes a cylinder and an air compressor. The air compressor is disposed in the housing and connected to the cylinder. The cylinder is disposed corresponding to the spline shaft, and a thrust ball bearing is disposed at the end of the output shaft of the cylinder. The cylinder is used to drive the spline shaft to move.

5. The semi-automatic center hole drilling device according to claim 1, characterized in that: The workpiece support assembly includes a support plate and a support base. The support plate is horizontally disposed on the outside of the housing, and the support base is slidably disposed on the support plate. The support base is used to support the workpiece to be drilled.

6. The semi-automatic center hole drilling device according to claim 5, characterized in that: The support plate is provided with a guide rail, and a slider is slidably mounted on the guide rail. The support base is mounted on the slider.

7. The semi-automatic center hole drilling device according to claim 6, characterized in that: The support base is U-shaped, and a stud is provided at the lower end of the support base. The slider is provided with a threaded hole, and the stud is threaded into the threaded hole.

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