Positioning mechanism and electric tapping machine thereof

Abstract

The utility model relates to the technical field of electric tapping machines, and discloses a positioning mechanism and an electric tapping machine comprising the same. The positioning assemblies are symmetrically arranged on the operation table, the positioning assemblies are used for positioning a workpiece, each positioning assembly comprises a fixed plate, a movable plate and a first abutting wheel, the fixed plates are symmetrically arranged on the operation table, the fixed plates are fixedly connected with the operation table, the movable plate is arranged on the fixed plates, and the movable plate is movably connected with the fixed plates; the first abutting wheels are arranged at the corners of the fixed plate and the movable plate, workpieces are conveyed while being positioned through mutual cooperation of components in the positioning assembly, and when the workpieces are driven by the positioning assembly to move and be positioned on the operation table, the next workpiece is placed on one side of the operation table and driven to move inwards, so that the next workpiece is conveyed to the operation table. And after the last workpiece is machined, continuous machining is carried out.

Description

Technical Field

[0001] This utility model belongs to the technical field of electric tapping machines, specifically, it relates to a positioning mechanism and its electric tapping machine. Background Technology

[0002] One of the processes in the manufacturing of automotive parts is tapping. An electric tapping machine is a machine tool that taps the internal threads of various types of threads. This type of machine tool belongs to the category of flexible tapping. Its significant feature is that it can be operated with a folding arm and is suitable for tapping threads below M42.

[0003] A document with publication number (CN218396313U) discloses a precision positioning mechanism for an electric tapping machine, which relates to the field of electric tapping machine technology. The mechanism includes a worktable, a tapping machine fixedly installed on one side of the top of the worktable, a discharge chute inside the worktable, a sliding groove on the top of the worktable, a horizontal plate fixedly installed on one side of the worktable, and a first linear drive motor fixedly installed on the top of the horizontal plate.

[0004] In the above-mentioned device, the operator first places the workpiece between the left clamping plate and the right clamping plate, starts the second linear drive motor, and the second telescopic rod moves to the left to fix the workpiece. Then, the operator turns off the second linear drive motor. Since the left clamping plate is connected to the telescopic spring, the workpiece can be compressed to the left. Then, the operator starts the first linear drive motor, which drives the first telescopic rod to extend and push the overall positioning mechanism to move.

[0005] The aforementioned device clamps the workpiece in the middle using left and right clamping plates, but the processing of the workpiece is difficult to perform continuously. The aforementioned device requires processing one workpiece, removing the workpiece, installing the next workpiece, and then processing it again, making continuous processing difficult.

[0006] In view of this, this utility model is hereby proposed. Utility Model Content

[0007] To solve the technical problem of continuous workpiece machining, the basic concept of the technical solution adopted by this utility model is as follows:

[0008] A positioning mechanism and its electric tapping machine include an operating table with symmetrically arranged installation positions; positioning components are symmetrically arranged on the operating table and are used to position the workpiece. The positioning components include a fixed plate, a movable plate, and a first abutting wheel. The fixed plate is symmetrically arranged on the operating table and is fixedly connected to the operating table. The movable plate is arranged on the fixed plate and is movably connected to the fixed plate. The first abutting wheel is arranged at the corner of the fixed plate and the movable plate.

[0009] In a preferred embodiment of this utility model, the positioning component further includes a drive motor, which is symmetrically arranged on the operating table and fixedly connected to the operating table. The movable plate is drivenly connected to the output end of the drive motor.

[0010] In a preferred embodiment of this utility model, the output shaft of the drive motor is fixedly connected to a lead screw, the lead screw is rotatably connected to the inner wall of the operating table, and a slider is threaded onto the lead screw.

[0011] In a preferred embodiment of this utility model, the movable plate is fixedly connected to the slider, and the movable plate is slidably connected to the fixed plate.

[0012] In a preferred embodiment of this utility model, the bottom end of the fixed plate is symmetrically provided with limiting blocks, which are fixedly connected to the fixed plate. The bottom end of the movable plate is provided with limiting rods, which are fixedly connected to the movable plate and slidably connected to the limiting blocks.

[0013] In a preferred embodiment of the present invention, the first abutting wheel is rotatably connected to the fixed plate and the movable plate respectively, the first abutting wheel is provided with an annular groove, and the operating table is provided with a discharge groove in the middle.

[0014] In a preferred embodiment of the present invention, a first support rod is provided on the first abutting wheel, the first support rod is rotatably connected to the fixed plate and the movable plate respectively, the first abutting wheel is slidably connected to the first support rod, a symmetrical inclined groove is provided in the middle of the first abutting wheel, a first spring is symmetrically provided on the first support rod, one end of the first spring is fixedly connected to the first abutting wheel, and the other end of the first spring is fixedly connected to the first support rod.

[0015] In a preferred embodiment of this utility model, the fixed plate and the movable plate are rotatably connected to a second support rod. A fixed block is symmetrically arranged on the second support rod, and the fixed block is slidably connected to the second support rod. A second spring is symmetrically arranged on the second support rod, with one end of the second spring fixedly connected to the fixed block and the other end of the second spring fixedly connected to the second support rod. Symmetrical threaded grooves are symmetrically opened on the second support rod. A second abutting wheel is fixedly connected between the fixed blocks. A ball head is symmetrically arranged inside the second abutting wheel, and the ball head is connected to the second abutting wheel through a ball-and-socket structure. The ball head is slidably connected to the threaded groove.

[0016] An electric tapping machine includes an electric tapping machine body and a support, characterized in that the electric tapping machine body is mounted on the support, the support is provided with all the above-mentioned positioning mechanisms, and the support is fixedly connected to the operating table.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. The positioning mechanism and its electric tapping machine, through the mutual cooperation between the components in the positioning assembly, position and transport the workpiece at the same time. When the workpiece is positioned by being moved by the positioning assembly on the operating table, the next workpiece is placed on one side of the operating table and moved inward, waiting for the previous workpiece to be processed before continuous processing.

[0019] 2. In this positioning mechanism and its electric tapping machine, a symmetrical inclined groove is provided in the middle of the first abutting wheel. When the thickness of the two sides of the automotive parts is different, the two sides of the automotive parts are staggered and clamped onto the inclined grooves on the first abutting wheel. At the same time, the automotive parts exert a downward force on the first abutting wheel by their own weight. The first abutting wheel presses down on the first spring at the bottom end and pulls down on the first spring at the top end. The first spring is deformed and generates a force in the opposite direction to the first abutting wheel, which supports the end of the automotive parts. Due to the different thicknesses and weights of the two sides of the automotive parts, the forces applied to the first abutting wheel are different, the forces on the first spring are different, and the supporting force of the first spring on the first abutting wheel is different, thus keeping the two sides of the automotive parts horizontal.

[0020] 3. This positioning mechanism and its electric tapping machine, due to the different thicknesses on both sides of the automotive parts and the different weights at both ends of the automotive parts, apply different forces to the second abutting wheel, resulting in different forces on the second spring and different supporting forces of the second spring on the second abutting wheel. This keeps both sides of the automotive parts horizontally placed. At the same time, the second abutting wheel is slidably connected to the threaded groove on the second support rod. Under the influence of the weight of the automotive parts and the second spring, a force is applied to the second abutting wheel. At this time, the second abutting wheel slides and rotates on the second support rod, giving the second spring a torque, increasing the supporting force of the second spring, and making the support of the automotive parts more stable.

[0021] 4. The positioning mechanism and its electric tapping machine, wherein the output shaft of the drive motor drives the lead screw to rotate, the slider and the lead screw are threadedly driven, the slider drives the movable plate to move, the movable plate and the fixed plate move towards each other, and the distance between the movable plate and the fixed plate is changed to adapt to workpieces of different sizes. The first abutting wheel is driven by the fixed plate and the movable plate to make close contact with the workpiece and limit the workpiece.

[0022] 5. In this positioning mechanism and its electric tapping machine, the servo motor drives the first abutting wheel to rotate. When the first abutting wheel rotates, it drives the workpiece to move to the other side. When the workpiece moves to the appropriate position, the main body of the electric tapping machine processes the workpiece. When the workpiece moves on the operating table, it changes the position to be processed and expands the processing range.

[0023] 6. In this positioning mechanism and its electric tapping machine, the waste generated during the processing of the workpiece is discharged downward through the unloading chute in the middle of the operating table, so as to avoid the accumulation of waste generated during the processing of the workpiece on the operating table.

[0024] 7. The positioning mechanism and its electric tapping machine, wherein the annular groove opened in the middle of the first abutting wheel is used to clamp the edge of the workpiece in the middle of the first abutting wheel, thereby restricting and fixing the workpiece by making close contact between the first abutting wheel and the workpiece.

[0025] 8. In this positioning mechanism and its electric tapping machine, when the movable plate moves, the limiting rod slides on the limiting block. The limiting rod is symmetrically arranged on the movable plate and restricts the movement direction of the movable plate to ensure the stable operation of the device.

[0026] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0027] In the attached diagram:

[0028] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0029] Figure 2 This is a three-dimensional schematic diagram of the positioning mechanism of this utility model;

[0030] Figure 3 This is a schematic diagram of the bottom structure of the fixed plate and the movable plate of this utility model;

[0031] Figure 4 This is a schematic diagram of the first abutting wheel structure of this utility model;

[0032] Figure 5 This is a schematic diagram of the second abutting wheel structure of this utility model.

[0033] In the diagram: 1. Main body of the electric tapping machine; 2. Operating table; 21. Unloading chute; 3. Fixed plate; 31. Movable plate; 4. First abutting wheel; 41. First support rod; 42. Second abutting wheel; 43. Fixed block; 44. Second support rod; 5. Drive motor; 51. Lead screw; 52. Slider; 6. Limiting block; 61. Limiting rod. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0035] Please see Figure 1-5A positioning mechanism and its electric tapping machine are disclosed, comprising an operating table 2 with symmetrically arranged installation positions; a positioning assembly symmetrically arranged on the operating table 2, used for positioning workpieces, the positioning assembly including a fixed plate 3, a movable plate 31 and a first abutting wheel 4, the fixed plate 3 being symmetrically arranged on the operating table 2 and fixedly connected to the operating table 2, the movable plate 31 being arranged on the fixed plate 3 and movably connected to the fixed plate 3, and the first abutting wheel 4 being arranged at the corners of the fixed plate 3 and the movable plate 31. The positioning assembly positions and transports the workpieces simultaneously through the cooperation of the components within the positioning assembly. When a workpiece is positioned on the operating table 2 by being moved by the positioning assembly, the next workpiece is placed on one side of the operating table 2 and moved inward, waiting for the previous workpiece to be processed before continuous processing.

[0036] The positioning component includes a drive motor 5, which is symmetrically arranged on the operating table 2 and fixedly connected to it. A movable plate 31 is connected to the output end of the drive motor 5. A lead screw 51 is fixedly connected to the output shaft of the drive motor 5, and the lead screw 51 is rotatably connected to the inner wall of the operating table 2. A slider 52 is threaded onto the lead screw 51. The movable plate 31 is fixedly connected to the slider 52 and slidably connected to the fixed plate 3. A first abutting wheel 4 is rotatably connected to both the fixed plate 3 and the movable plate 31. A servo motor is connected to the bottom end of the first abutting wheel 4, and the servo motor is fixedly connected to both the fixed plate 3 and the movable plate 31. An annular groove is provided on the first abutting wheel 4. A discharge chute 21 is provided in the middle of the operating table 2. When a workpiece is manually placed on one side of the operating table 2, the output shaft of the drive motor 5 drives the lead screw 51 to rotate. The slider 52 is threadedly connected to the lead screw 51, and the slider 52 drives... The movable plate 31 moves, and the movable plate 31 moves towards the fixed plate 3, changing the distance between the movable plate 31 and the fixed plate 3 to adapt to workpieces of different sizes. The first abutting wheel 4 is driven by the fixed plate 3 and the movable plate 31 to make close contact with the workpiece and limit the workpiece. At this time, the servo motor drives the first abutting wheel 4 to rotate. When the first abutting wheel 4 rotates, it drives the workpiece to move to the other side. When the workpiece moves to the appropriate position, the electric tapping machine body 1 processes the workpiece. The waste generated during the processing of the workpiece is discharged downward through the unloading groove 21 in the middle of the operating table 2 to avoid the accumulation of waste generated during the processing of the workpiece on the operating table 2. When the workpiece moves on the operating table 2, it changes the position of being processed and expands the processing range. The annular groove opened in the middle of the first abutting wheel 4 is used to lock the edge of the workpiece in the middle of the first abutting wheel 4, thereby restricting and fixing the workpiece through the close contact between the first abutting wheel 4 and the workpiece.

[0037] The fixed plate 3 has symmetrically arranged limit blocks 6 at its bottom end, which are fixedly connected to the fixed plate 3. The movable plate 31 has a limit rod 61 at its bottom end, which is fixedly connected to the movable plate 31 and slidably connected to the limit block 6. When the movable plate 31 moves, the limit rod 61 slides on the limit block 6. The limit rod 61 is symmetrically arranged on the movable plate 31 and restricts the movement direction of the movable plate 31 to ensure the stable operation of the device.

[0038] The first abutting wheel 4 is equipped with a first support rod 41, which is rotatably connected to both the fixed plate 3 and the movable plate 31. The first abutting wheel 4 is slidably connected to the first support rod 41. A symmetrical inclined groove is formed in the middle of the first abutting wheel 4. A first spring is symmetrically arranged on the first support rod 41, with one end of the first spring fixedly connected to the first abutting wheel 4 and the other end fixedly connected to the first support rod 41. Since automotive parts have varying shapes, they need to be placed horizontally before tapping. The symmetrical inclined groove in the middle of the first abutting wheel 4 allows for easier tapping when the thickness of the two sides of the automotive part is uneven. The two sides of the component are staggered and engaged with the inclined grooves on the first abutment wheel 4. At the same time, the automotive component exerts a downward force on the first abutment wheel 4 by its own weight. The first abutment wheel 4 presses down on the first spring at the bottom end and pulls down on the first spring at the top end. The first spring is deformed and generates a force in the opposite direction to the first abutment wheel 4, which supports the end of the automotive component. Due to the different thicknesses on both sides of the automotive component and the different weights at both ends of the automotive component, the forces applied to the first abutment wheel 4 are different, the forces on the first spring are different, and the supporting force of the first spring on the first abutment wheel 4 is different, keeping the two sides of the automotive component horizontal.

[0039] The fixed plate 3 and the movable plate 31 are rotatably connected to a second support rod 44. A fixed block 43 is symmetrically arranged on the second support rod 44, and the fixed block 43 is slidably connected to the second support rod 44. A second spring is symmetrically arranged on the second support rod 44, with one end of the second spring fixedly connected to the fixed block 43 and the other end fixedly connected to the second support rod 44. Symmetrical threaded grooves are symmetrically opened on the second support rod 44, with the threaded grooves facing opposite directions. A second abutting wheel 42 is fixedly connected between the fixed blocks 43. A ball head is symmetrically arranged inside the second abutting wheel 42, and the ball head is connected to the second abutting wheel 42 through a ball-and-socket structure. The ball head is slidably connected to the corresponding threaded groove. A symmetrical inclined groove is opened in the middle of the second abutting wheel 42. When the thickness of the two sides of the automotive parts is different, the two sides of the automotive parts are staggered and engaged with the inclined grooves on the second abutting wheel 42. At the same time, the automotive parts exert their own weight on the second abutting wheel. A downward force is applied by the second abutment wheel 42, which presses down on the bottom of the second spring and pulls down on the top of the second spring. The second spring is deformed and generates a force opposite to that of the second abutment wheel 42, supporting the end of the automotive component. Due to the different thicknesses and weights on both sides of the automotive component, the forces applied to the second abutment wheel 42 are different, the forces on the second spring are different, and the supporting force of the second spring on the second abutment wheel 42 is different, keeping both sides of the automotive component horizontal. At the same time, the second abutment wheel 42 is slidably connected to the threaded groove on the second support rod 44. Under the influence of the weight of the automotive component and the second spring, a force is applied to the second abutment wheel 42. At this time, the second abutment wheel 42 slides and rotates on the second support rod 44, giving the second spring a torque, increasing the supporting force of the second spring, and making the support of the automotive component more stable.

[0040] An electric tapping machine includes an electric tapping machine body 1 and a support. The electric tapping machine body 1 is mounted on the support, which is equipped with all the aforementioned positioning mechanisms. The support is fixedly connected to the operating table 2. When a workpiece is positioned on the operating table 2 by being moved by the positioning components, the next workpiece is placed on one side of the operating table 2 and moved inward, waiting for the previous workpiece to be processed before continuous processing can begin.

[0041] It is worth noting that the main body 1 of the electric tapping machine includes a processing table, a support fixedly connected to the processing table, an electric telescopic rod fixedly connected to the top of the processing table, a tapping motor fixedly connected to the piston end of the electric telescopic rod, a tapping head fixedly connected to the output shaft of the tapping motor, a fixed motor fixedly connected to the top of the processing table, and a fixed placement seat fixedly connected to the output shaft of the fixed motor passing through the processing table. The main body 1 of the electric tapping machine has been disclosed in the prior art of an electric tapping machine for a wind turbine locking disc, CN222059058U, and will not be described in detail here.

[0042] Working principle: The workpiece is manually placed on one side of the operating table 2. The output shaft of the drive motor 5 drives the lead screw 51 to rotate. The slider 52 is threadedly driven by the lead screw 51, and the slider 52 drives the movable plate 31 to move. The movable plate 31 moves towards the fixed plate 3, changing the distance between the movable plate 31 and the fixed plate 3 to adapt to workpieces of different sizes. The first abutting wheel 4 is driven by the fixed plate 3 and the movable plate 31 to make close contact with the workpiece, limiting the workpiece. At this time, the servo motor drives the first abutting wheel 4 to rotate. When the first abutting wheel 4 rotates, it drives the workpiece to move to the other side. When the workpiece moves to the appropriate position, the main body 1 of the electric tapping machine processes the workpiece. The waste generated during the processing is discharged downward through the unloading chute 21 in the middle of the operating table 2 to avoid the waste from being processed. Waste chips generated during part processing accumulate on the operating table 2. As the workpiece moves on the operating table 2, its processing position changes, expanding the processing range. Simultaneously, when the workpiece is positioned by the positioning component on the operating table 2, the next workpiece is placed on one side of the operating table 2 and moved inwards, waiting for the previous workpiece to finish processing before continuous processing begins. When the movable plate 31 moves, the limiting rod 61 slides on the limiting block 6. The limiting rod 61 is symmetrically arranged on the movable plate 31 and restricts the direction of movement of the movable plate 31, ensuring stable operation of the device. The annular groove in the middle of the first abutting wheel 4 is used to clamp the edge of the workpiece in the middle of the first abutting wheel 4, thereby restricting the workpiece through close contact between the first abutting wheel 4 and the workpiece. When the electric tapping machine body 1 is working, both the servo motor and drive motor 5 stop working. Since automotive parts have varying shapes, they need to be placed horizontally before tapping. The first abutment wheel 4 has symmetrical oblique grooves in its center. When the thickness of the two sides of the automotive part is different, the two sides of the automotive part are staggered and engaged with the oblique grooves on the first abutment wheel 4. Simultaneously, the automotive part exerts a downward force on the first abutment wheel 4 due to its own weight. The first abutment wheel 4 presses down on the first spring at its bottom end and pulls down on the first spring at its upper end. The first spring is deformed and generates a force opposite to that of the first abutment wheel 4, supporting the end of the automotive part. Due to the different thicknesses on both sides of the automotive part... The different weights at both ends of the automotive component result in different forces applied to the first abutment wheel 4, different forces on the first spring, and different supporting forces from the first spring on the first abutment wheel 4. When the automotive component is placed horizontally with unequal thicknesses on both sides, the two sides are staggered and engaged with the inclined grooves on the second abutment wheel 42. Simultaneously, the automotive component exerts a downward force on the second abutment wheel 42 due to its own weight. The second abutment wheel 42 presses down on the second spring at its bottom and pulls down on the second spring at its top. The second spring deforms and generates a force opposite to that of the second abutment wheel 42, supporting the end of the automotive component. Due to the different thicknesses and weights at both ends of the automotive component...Different forces applied to the second abutment wheel 42 result in different forces on the second spring, and thus different supporting forces from the second spring on the second abutment wheel 42. By keeping both sides of the automotive component horizontal, and with the second abutment wheel 42 slidably connected to the threaded groove on the second support rod 44, a force is applied to the second abutment wheel 42 under the influence of the component's weight and the second spring. At this time, the second abutment wheel 42 slides and rotates on the second support rod 44, providing a torque to the second spring, increasing its supporting force, and thus providing more stable support for the automotive component.

[0043] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A positioning mechanism, characterized in that, include: The control panel (2) has symmetrical installation positions. The positioning components are symmetrically arranged on the operating table (2). The positioning components are used to position the workpiece. The positioning components include a fixed plate (3), a movable plate (31) and a first abutting wheel (4). The fixed plate (3) is symmetrically arranged on the operating table (2) and is fixedly connected to the operating table (2). The movable plate (31) is arranged on the fixed plate (3) and is movably connected to the fixed plate (3). The first abutting wheel (4) is arranged at the corner of the fixed plate (3) and the movable plate (31).

2. The positioning mechanism according to claim 1, characterized in that, The positioning component also includes a drive motor (5), which is symmetrically arranged on the operating table (2). The drive motor (5) is fixedly connected to the operating table (2), and the movable plate (31) is connected to the output end of the drive motor (5) via transmission.

3. The positioning mechanism according to claim 2, characterized in that, The output shaft of the drive motor (5) is fixedly connected to a lead screw (51), which is rotatably connected to the inner wall of the operating table (2). A slider (52) is threaded onto the lead screw (51).

4. The positioning mechanism according to claim 3, characterized in that, The movable plate (31) is fixedly connected to the slider (52), and the movable plate (31) is slidably connected to the fixed plate (3).

5. The positioning mechanism according to claim 1, characterized in that, The bottom end of the fixed plate (3) is symmetrically provided with limit blocks (6), and the limit blocks (6) are fixedly connected to the fixed plate (3). The bottom end of the movable plate (31) is provided with a limit rod (61), and the limit rod (61) is fixedly connected to the movable plate (31). The limit rod (61) is slidably connected to the limit block (6).

6. The positioning mechanism according to claim 1, characterized in that, The first abutting wheel (4) is rotatably connected to the fixed plate (3) and the movable plate (31) respectively. The fixed plate (3) and the movable plate (31) are equipped with servo motors. The servo motors are used to drive the abutting wheel (4) to rotate. The first abutting wheel (4) is provided with an annular groove. The operating table (2) is provided with a discharge groove (21) in the middle.

7. The positioning mechanism according to claim 6, characterized in that, The first abutting wheel (4) is provided with a first support rod (41), which is rotatably connected to the fixed plate (3) and the movable plate (31) respectively. The first abutting wheel (4) is slidably connected to the first support rod (41). A symmetrical inclined groove is opened in the middle of the first abutting wheel (4). A first spring is symmetrically provided on the first support rod (41). One end of the first spring is fixedly connected to the first abutting wheel (4), and the other end of the first spring is fixedly connected to the first support rod (41).

8. The positioning mechanism according to claim 1, characterized in that, The fixed plate (3) and the movable plate (31) are rotatably connected to a second support rod (44). Fixed blocks (43) are symmetrically arranged on the second support rod (44). The fixed blocks (43) are slidably connected to the second support rod (44). A second spring is symmetrically arranged on the second support rod (44). One end of the second spring is fixedly connected to the fixed block (43), and the other end of the second spring is fixedly connected to the second support rod (44). Symmetrical threaded grooves are symmetrically opened on the second support rod (44). A second abutting wheel (42) is fixedly connected between the fixed blocks (43). Ball heads are symmetrically arranged inside the second abutting wheel (42). The ball heads are connected to the second abutting wheel (42) through a ball-and-socket structure. The ball heads are slidably connected to the threaded grooves.

9. An electric tapping machine, comprising an electric tapping machine body (1) and a support, characterized in that, The main body (1) of the electric tapping machine is mounted on a support, which is provided with any of the positioning mechanisms described in claims 1-6, and the support is fixedly connected to the operating table (2).

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