A positioning device for drilling and milling

Abstract

This utility model belongs to the field of machining fixture technology, and particularly relates to a positioning device for drilling and milling. It includes a base plate, a first motor mounted on top of the base plate via a shock-absorbing plate, a rotating seat on one side of the machine platform, inner bearings symmetrically arranged on the inner wall of the rotating seat, a rotating column rotatably mounted on the inner bearings, a drive shaft at one end of the rotating column, the drive shaft being connected to the output end of the first motor via a coupling, a locking assembly on the rotating column, linear guide rails symmetrically arranged above the shock-absorbing plate, a telescopic tube mounted above the linear guide rails via a slider, a clamping seat above the telescopic tube, and a lifting mechanism mounted above the linear guide rails via a movable seat. The locking assembly is slidably mounted on the lifting mechanism. This utility model allows for convenient observation and processing of rods, raising one end of the rod to a suitable position, providing excellent clamping and positioning, and enabling real-time correction of the workpiece angle during processing, resulting in more convenient and intuitive operation.

Description

Technical Field

[0001] This utility model belongs to the field of machining fixture technology, and in particular relates to a positioning device for drilling and milling. Background Technology

[0002] Drilling and milling is a metalworking technique that removes material through drilling and milling operations to achieve complex shapes. In the current field of drilling and milling, precise workpiece positioning and stable clamping are key to ensuring machining accuracy. Existing technologies generally use cylinder-driven positioning clamps to clamp the workpiece. Although this solution is simple in structure and convenient to operate, it has significant limitations in practical applications.

[0003] When dealing with small, lightweight workpieces, such as slender rods, the clamping force provided by the cylinder often appears too rigid and lacks adaptability. This causes the workpiece to easily experience slight oscillations or overall displacement under the action of a high-speed rotating drilling and milling tool. Such instability not only directly affects the geometric accuracy and surface quality of the machined holes or contours, but more seriously, the instantaneous instability during the machining process can easily lead to accidental collisions between the tool and the workpiece, chipping, or even workpiece scrap, thus reducing production efficiency and yield. Utility Model Content

[0004] The purpose of this invention is to provide a positioning device for drilling and milling to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the present invention adopts a positioning device for drilling and milling, comprising a base plate, a shock-absorbing plate above the base plate, a machine platform above the shock-absorbing plate, a first motor above the machine platform, a rotating seat on one side of the machine platform, the upper end of the rotating seat being U-shaped and the lower end being I-shaped, inner bearings symmetrically arranged on the inner sidewall of the rotating seat, a rotating column rotatably mounted on the inner bearing, a drive shaft at one end of the rotating column, the drive shaft being connected to the output end of the first motor via a coupling, a locking assembly on the rotating column, linear guide rails symmetrically arranged above the shock-absorbing plate, a slider above the linear guide rails, a telescopic tube above the slider, a retaining seat above the telescopic tube, a movable seat above the linear guide rails, a lifting mechanism above the movable seat, a locking assembly slidably mounted on the lifting mechanism, one end of a rod being fixedly connected to the locking assembly on the rotating column, the other end of the rod being connected to the locking assembly on the lifting mechanism, and the rod being stably supported below by the retaining seat.

[0006] Preferably, the locking assembly includes a sleeve, a tightening screw, a connecting plate, a reinforcing plate, a clamping tube, and a fastening screw. The sleeve is respectively mounted on the rotating column and the lifting mechanism. The tightening screw is installed on the sleeve. The connecting plate is symmetrically hinged above the sleeve. The reinforcing plate is fixedly mounted on the side of the connecting plate. The clamping tube is located below the reinforcing plate and is semi-cylindrical. The fastening screw is installed between the two reinforcing plates.

[0007] Preferably, four mounting nails are provided at the four corners of the base plate.

[0008] Preferably, the linear guide rail has multiple pin holes through both sides, and the slider and the movable seat are inserted into the pin holes by pins.

[0009] Preferably, the lifting mechanism includes a long chamber, a second motor, a bottom bearing, a threaded rod, a guide column, a movable plate, a connecting column, and a sliding gap. The long chamber is positioned above the movable seat. The second motor is positioned at the top of the long chamber, with its output end penetrating through the top of the long chamber. The bottom bearing is positioned on the inner bottom wall of the long chamber. One end of the threaded rod is positioned above the bottom bearing, and the other end of the threaded rod is connected to the output end of the second motor. The guide columns are symmetrically positioned on both sides of the threaded rod. The movable plate is slidably positioned on the threaded rod. The connecting column is positioned on the movable plate. A sliding gap is provided on the outer side of the long chamber, providing the connecting column with space for vertical sliding. The connecting column is connected to the locking assembly.

[0010] Preferably, a baffle is provided on the side of the linear guide rail adjacent to the lifting mechanism.

[0011] Preferably, the card holder is made of polyurethane material that is narrower at the top and wider at the bottom, and a semi-cylindrical slot is provided at the upper end of the card holder to fit the shape of the rod.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] This invention utilizes a first motor to rotate a rotating column, which in turn allows the locking assembly to adjust the angle of the rod, enabling machining operations at any angle. The locking assembly provides quick and secure installation of the rod. The rod is dynamically supported by a mounting bracket and telescopic tube, further preventing resonance and offset. The U-shaped rotating seat and inner bearing allow the workpiece to self-adjust its angle. This allows for machining of one end of the rod while maintaining its stability, or for the other end to be fixed to the lifting mechanism via the locking assembly, enabling machining of the adjacent end of the rod. This design facilitates easy observation and machining of the rod, raising one end to a suitable position. It not only provides excellent clamping and positioning but also allows for real-time correction of the workpiece angle during machining, resulting in more convenient and intuitive operation. Compared to cylinder clamps, this structure effectively reduces the machining offset of slender rods. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 A rear-view perspective view of a positioning device for drilling and milling;

[0016] Figure 2 A front-view perspective view of a positioning device for drilling and milling;

[0017] Figure 3 This is a schematic diagram of the lifting mechanism;

[0018] Figure 4 This is a structural diagram of the locking assembly;

[0019] Figure 5 This is a schematic diagram of the mounting structure of the card slot.

[0020] In the above figures, 1. Base plate, 2. Mounting pin, 3. Shock absorber plate, 4. Slider, 5. Pin hole, 6. Pin shaft, 7. Card seat, 8. Linear guide rail, 9. Rod, 10. Carrier platform, 11. First motor, 12. Rotating seat, 13. Rotating column, 14. Inner bearing, 15. Drive shaft, 16. Coupling, 17. Lifting mechanism, 1701. Long compartment, 1702. Second motor, 1703. Threaded rod, 1704. Bottom bearing, 1705. Guide column, 1706. Moving plate, 1707. Connecting column, 1708. Sliding gap, 18. Locking assembly, 1801. Sleeve, 1802. Tightening screw, 1803. Connecting plate, 1804. Reinforcing plate, 1805. Card, 1806. Fastening screw, 19. Baffle, 20. Telescopic tube, 21. Moving seat. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Example 1, such as Figure 1-5As shown, the specific design of the above-mentioned key components is described below: A positioning device for drilling and milling includes a base plate 1, a shock-absorbing plate 3 is arranged above the base plate 1, a machine platform 10 is arranged above the shock-absorbing plate 3, a first motor 11 is arranged above the machine platform 10, a rotating seat 12 is arranged on one side of the machine platform 10, the upper end of the rotating seat 12 is U-shaped and the lower end is I-shaped, inner bearings 14 are symmetrically arranged on the inner side wall of the rotating seat 12, a rotating column 13 is rotatably arranged on the inner bearing 14, a drive shaft 15 is arranged at one end of the rotating column 13, and the drive shaft 15 is connected to the output of the first motor 11 through a coupling 16. The rotating column 13 is connected to the end of the shaft. A locking assembly 18 is provided on the rotating column 13. A linear guide rail 8 is symmetrically arranged above the damping plate 3. A slider 4 is arranged above the linear guide rail 8. A telescopic tube 20 is arranged above the slider 4. A card seat 7 is arranged above the telescopic tube 20. A movable seat 21 is arranged above the linear guide rail 8. A lifting mechanism 17 is arranged above the movable seat 21. A locking assembly 18 is slidably arranged on the lifting mechanism 17. One end of the rod 9 is fixedly connected to the locking assembly 18 on the rotating column 13. The other end of the rod 9 is connected to the locking assembly 18 on the lifting mechanism 17. The rod 9 is stably supported by the card seat 7 below.

[0024] The damping plate 3 forms a basic buffer layer to absorb drilling and milling impact vibrations. The linear guide rail 8, slider 4, and moving seat 21 form a sliding movable combination. The telescopic tube 20, in conjunction with the clamping seat 7, dynamically supports the middle of the rod 9. The moving slider 4 accurately locates the load-bearing point of the rod 9, eliminating cantilever vibration. The U-shaped rotating seat 12 and the inner bearing 14 allow the workpiece to adjust its angle slightly. The first motor 11 drives the transmission shaft 15 and the rotating column 13 to rotate. The rotating column 13 then drives the locking assembly 18 to adjust the vertical angle. The rod 9 adjusts its vertical angle under the drive of the locking assembly 18. The sliding moving seat 21 connects the lifting mechanism 17 to the rod 9. The lifting mechanism 17 moves up and down, allowing one end of the rod 9 to also move vertically. The end of the rod 9 near the rotating seat 12 is responsible for controlling the angle and assisting rotation, in conjunction with the lifting mechanism. The inclined shape of the vertical lifting stroke of the mechanism 17 facilitates the processing of the higher end of the adjacent lifting mechanism 17. Then, the bracket 7 supports the rod 9 from below, forming a firm, stable and easy-to-operate state. The two ends of the rod 9 are respectively fixed to the locking assembly of the rotating column 13 and the locking assembly 18 of the lowering mechanism, and the middle is supported by the bracket 7. The first motor 11 is started to drive the rotating column 13 to rotate, adjusting the rod 9 to the processing angle. Then the lifting mechanism 17 also adjusts its angle upwards and moves in conjunction with the moving seat 21 to locate the rod 9. Alternatively, it can be unfixed to the locking assembly 18 of the lifting mechanism 17. When directly processing the end of the rod 9, it is only necessary to ensure that the rod 9 at the end of the rotating column 13 is firmly locked on the locking assembly 18. The bracket 7, through the telescopic tube 20 and the slider 4, locates the force point of the rod 9, so that the bracket 7 supports the rod 9 from below, and processes the end of the rod 9.

[0025] The locking assembly 18 includes a sleeve 1801, a tightening screw 1802, a connecting plate 1803, a reinforcing plate 1804, a clamping tube 1805, and a fastening screw 1806. The sleeve 1801 is respectively mounted on the rotating column 13 and the lifting mechanism 17. The sleeve 1801 can fit over one end of the rod 9. The tightening screw 1802 is mounted on the sleeve 1801. The connecting plate 1803 is symmetrically hinged above the sleeve 1801. The reinforcing plate 1804 is fixedly mounted on the side of the connecting plate 1803. The clamping tube 1805 is located below the reinforcing plate 1804 and is semi-cylindrical. The fastening screw 1806 is mounted between the two reinforcing plates 1804. The rod 9 is placed into the symmetrical semi-cylindrical clamp tube 1805. By rotating the fastening screw 1806, the two reinforcing plates 1804 on both sides are closed to form a ring clamp structure to avoid point pressure deformation. Tightening the top screw 1802 makes the top screw 1802 radially lock the rod 9 at one end. The hinged connecting plate 1803 allows the reinforcing plate 1804 to be reversed to both sides, which makes it easy for the reinforcing plate 1804 to drive the clamp tube 1805 to open and close. In this way, the rod 9 has double protection. It can not only form a ring clamp of the clamp tube 1805, but also lock one end of the rod 9 by the top screw 1802, which can enhance the stability and firmness of the rod 9.

[0026] Multiple pin holes 5 are provided on both sides of the linear guide rail 8. The slider 4 and the moving seat 21 are inserted into the pin holes 5 through the pin shaft 6. Four mounting nails 2 are provided at the four corners of the base plate 1. The equidistant pin holes 5 on both sides of the linear guide rail 8 allow the slider 4 and the moving seat 21 to achieve multi-position precise positioning through the pin shaft 6. The pin-type fixing provides a zero-clearance rigid connection to ensure the support stability of the slider 4 and the moving seat 21. The mounting nails 2 at the four corners of the base plate 1 have the dual functions of positioning pins and locking bolts. The lower end can be inserted into the machine tool T-slot for positioning, realizing quick docking of the equipment and ensuring the overall operational stability of the equipment.

[0027] The lifting mechanism 17 includes a long chamber 1701, a second motor 1702, a bottom bearing 1704, a threaded rod 1703, a guide column 1705, a moving plate 1706, a connecting column 1707, and a sliding gap 1708. The long chamber 1701 is positioned above the moving seat 21. The second motor 1702 is positioned at the top of the long chamber 1701, with its output end penetrating through the top of the long chamber 1701. The bottom bearing 1704 is positioned on the inner bottom wall of the long chamber 1701. One end of the threaded rod 1703 is positioned above the bottom bearing 1704, and the other end of the threaded rod 1703 is connected to the output end of the second motor 1702. The guide columns 1705 are symmetrically arranged on both sides of the threaded rod 1703. The moving plate 1706... The 706 is slidably mounted on the threaded rod 1703, and the connecting post 1707 is mounted on the moving plate 1706. The outer side of the long chamber 1701 has a sliding gap 1708, which provides the connecting post 1707 with room to slide up and down. The connecting post 1707 is connected to the locking assembly 18. The second motor 1702 is started to drive the threaded rod 1703 to rotate, which drives the moving plate 1706 to rise and fall vertically along the guide post 1705. The connecting post 1707 passes through the sliding gap 1708 and is linked with the locking assembly 18 to transmit the lifting displacement to the end of the rod 9, so as to raise or lower one end of the rod 9, so as to facilitate the processing of the rod 9 with the processing tool and avoid the problems of inconvenient operation and limited angle of the rod 9. A baffle 19 is provided on the side of the linear guide rail 8 near the lifting mechanism 17. The baffle 19 can effectively prevent the moving seat 21 from derailing. The card holder 7 is made of polyurethane material that is narrow at the top and wide at the bottom. The upper end of the card holder 7 has a semi-cylindrical slot. The slot fits the shape of the rod 9 and can disperse local pressure. The wide base at the bottom enhances the support stability. The narrow neck at the bottom avoids the processing area and avoids interference with the tool path. The polyurethane material provides elastic damping, absorbs high-frequency vibration, suppresses amplitude, and further enhances the processing stability of the rod 9.

[0028] The design utilizes the shock-absorbing plate 3 and the polyurethane mounting base 7 to form an elastic buffer layer, effectively absorbing drilling and milling impact energy. The locking assembly 18 uses a double locking mechanism of annular clamp and radial tightening screw 1802 to further eliminate the movement of the rod 9. The bearing 14 inside the U-shaped rotating seat 12, combined with the adaptive adjustment capability of the lifting mechanism 17, and the pin hole 5 of the linear guide rail 8 to ensure the fixation of the moving seat 21 and the slider 4, are all effective. The telescopic tube 20 dynamically lifts the rod 9 and combines it with the curved surface fit design of the mounting base 7 to accurately distribute the load in the middle of the rod 9, enabling multi-angle machining of the rod 9. The oil-resistant and hydrolysis-resistant properties of the urethane material extend the life of key components. The narrow-at-the-top and wide-at-the-bottom shape of the mounting base 7 balances stable support and tool avoidance. The overall structure improves machining stability while significantly reducing maintenance frequency and operational complexity.

[0029] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A positioning device for drilling and milling, characterized in that, The system includes a base plate, a shock-absorbing plate on top of the base plate, a platform on top of the shock-absorbing plate, a first motor on top of the platform, a rotating seat on one side of the platform, the upper end of the rotating seat being U-shaped and the lower end I-shaped, inner bearings symmetrically arranged on the inner sidewall of the rotating seat, a rotating column rotatably mounted on the inner bearing, a drive shaft at one end of the rotating column, the drive shaft being connected to the output end of the first motor via a coupling, a locking assembly on the rotating column, linear guide rails symmetrically arranged above the shock-absorbing plate, a slider on top of the linear guide rails, a telescopic tube on top of the slider, a retaining seat on top of the telescopic tube, a movable seat on top of the linear guide rails, a lifting mechanism on top of the movable seat, a locking assembly slidably mounted on the lifting mechanism, one end of a rod being fixedly connected to the locking assembly on the rotating column, the other end of the rod being connected to the locking assembly on the lifting mechanism, and the rod being stably supported below by the retaining seat.

2. The positioning device for drilling and milling according to claim 1, characterized in that, The locking assembly includes a sleeve, a tightening screw, a connecting plate, a reinforcing plate, a clamping tube, and a fastening screw. The sleeve is respectively mounted on the rotating column and the lifting mechanism. The tightening screw is installed on the sleeve. The connecting plate is symmetrically hinged above the sleeve. The reinforcing plate is fixedly mounted on the side of the connecting plate. The clamping tube is located below the reinforcing plate and is semi-cylindrical. The fastening screw is installed between the two reinforcing plates.

3. The positioning device for drilling and milling according to claim 1, characterized in that, The base plate has four mounting nails at its four corners.

4. A positioning device for drilling and milling according to claim 1, characterized in that, The linear guide rail has multiple pin holes through both sides, and the slider and the moving seat are inserted into the pin holes by pin shafts.

5. A positioning device for drilling and milling according to claim 2, characterized in that, The lifting mechanism includes a long chamber, a second motor, a bottom bearing, a threaded rod, a guide column, a moving plate, a connecting column, and a sliding gap. The long chamber is positioned above the moving base. The second motor is positioned at the top of the long chamber, with its output end penetrating through the top of the long chamber. The bottom bearing is positioned on the inner bottom wall of the long chamber. One end of the threaded rod is positioned above the bottom bearing, and the other end of the threaded rod is connected to the output end of the second motor. The guide columns are symmetrically positioned on both sides of the threaded rod. The moving plate is slidably mounted on the threaded rod. The connecting column is mounted on the moving plate. A sliding gap is provided on the outer side of the long chamber, allowing the connecting column to slide vertically. The connecting column is connected to the locking assembly.

6. A positioning device for drilling and milling according to claim 5, characterized in that, A baffle is provided on the side of the linear guide rail near the lifting mechanism.

7. A positioning device for drilling and milling according to any one of claims 1-6, characterized in that, The card holder is made of polyurethane material that is narrower at the top and wider at the bottom, and a semi-cylindrical slot is opened at the upper end of the card holder to fit the shape of the rod.

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