Three-beam four-column type high-speed drilling machine tool

Abstract

The utility model relates to the technical field of drilling machine tools, and discloses a three-beam four-column type high-speed drilling machine tool which comprises a bottom beam, and a guide assembly is arranged on the top of the bottom beam. The transmission block is driven to rotate, then the transmission block drives the other movable seat to synchronously move towards the fixed seat through the second rotating rod connected with the transmission block, the two sets of connecting blocks drive the two positioning blocks connected with the two sets of connecting blocks to tighten towards the center point while moving along with the two sets of connecting blocks, and therefore positioning of a workpiece is completed. The positioning of a workpiece is realized by using a single air cylinder; the position of the workbench is continuously lifted through the lifting machine, the sliding sleeves slide along the outer sides of the guide columns, the drilling depth of a workpiece is controlled, then needed holes are gradually formed, machining is completed, a simpler three-beam four-column machine body structure is adopted, the main shaft is arranged in the centers of the four sets of guide columns, the unbalance loading problem of a drilling power shaft box is solved, and the machining efficiency is improved. And meanwhile, the lifting machine is used for transmission, so that the drilling depth is adjusted.

Description

Technical Field

[0001] This utility model relates to the field of drilling machine tool technology, specifically a three-beam four-column high-speed drilling machine tool. Background Technology

[0002] High-speed drilling machines are advanced manufacturing equipment designed for efficient and high-precision hole machining. Their core functionality lies in achieving precision drilling, reaming, and tapping of complex workpieces through ultra-high spindle speeds and optimized motion control. They are widely used in drilling components for engineering machinery supports, automotive universal joints, forks, levers, gears, lugs, leaf spring supports, thrust rod heads, ball joints, cylinder blocks, servo motor shafts, and sleeve-type parts.

[0003] Most existing three-beam four-column high-speed drilling machines use a dovetail slide type spindle box offset structure with a support base and column. Another type is the vertical multi-axis drilling machine, also known as a group drill. These drilling machines have a wide range of applications, but the traditional control mode using relay control results in a low degree of automation. The hole depth is uncontrollable, and it is difficult to achieve hole processing at different speeds. In addition, the drilling power spindle box is prone to uneven load, which reduces the stability of use. During drilling, the workpiece needs to be positioned to ensure the drilling accuracy. The positioning mechanism usually has two cylinders on each side of the worktable to drive the positioning block to fix the workpiece in the middle. As a mechanical component, the cylinder is subject to failure risks such as wear and leakage. The use of multiple cylinders means more failure points, and the use of multiple cylinders also increases the operating cost of the equipment. Utility Model Content

[0004] The purpose of this utility model is to provide a three-beam four-column high-speed drilling machine tool to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a three-beam, four-column high-speed drilling machine tool, comprising:

[0006] A bottom beam, the top of which is provided with a guide assembly, and a top beam and a worktable are provided on the outside of the guide assembly;

[0007] A protective component is provided on the outside of the bottom beam and the top beam. A servo motor is provided on the outside of the protective component, and a transmission component is provided at the output end of the servo motor.

[0008] The main spindle is located inside the transmission assembly. A rotary joint is provided at one top end of the main spindle, and a drill bit for drilling holes in the workpiece is installed at one bottom end of the main spindle. A lift for adjusting the height of the worktable is provided at the top of the bottom beam.

[0009] A connecting component is disposed at the bottom of the workbench, and a fixing seat is disposed on the outside of the connecting component, and a cylinder is disposed on the outside of the fixing seat;

[0010] The transmission block rotates on the top of the fixed base. A rotating component is provided on the outer side of the transmission block. Two sets of limiting components are symmetrically arranged on the inner side of the worktable. A positioning block for fixing the workpiece is provided on the outer side of each of the two sets of limiting components.

[0011] Preferably, the guide assembly includes four guide columns fixed to the top of the bottom beam, with sliding sleeves slidably connected to the outer sides of each of the four guide columns. The outer sides of the sliding sleeves are fixedly connected to the inner side of the worktable, and the other ends of the four guide columns are fixedly connected to the bottom of the top beam.

[0012] Preferably, the protective assembly includes a support base fixed to the bottom of the bottom beam, a protective cover is installed on the top of the top beam, and a servo motor is installed on the top of the protective cover.

[0013] Preferably, the transmission assembly includes a transmission wheel disposed at the output end of the servo motor, and a synchronous belt is rotatably connected to both the inner side of the transmission wheel and the outer side of the main shaft.

[0014] Preferably, the connecting assembly includes a fixed rod fixed to the bottom of the workbench, two movable seats are slidably connected to the outer side of the fixed rod, and a cylinder is fixedly connected to one side of one of the movable seats, and the outer side of the fixed rod is fixedly connected to the inner side of the fixed seat.

[0015] Preferably, the rotating assembly includes a first rotating rod that rotates on the top of the movable seat, the other end of the first rotating rod being rotatably connected to a transmission block, and the other end of the transmission block being rotatably connected to a second rotating rod.

[0016] Preferably, the limiting component includes a connecting block fixed to the top of the movable seat, a limiting groove is formed on the inner side of the worktable, the top of the connecting block is fixedly connected to the bottom of the positioning block, and the outer side of the connecting block is slidably connected to the inner side of the limiting groove.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This invention utilizes a cylinder for activation. The piston rod, fixed to one side of the fixed base, retracts, simultaneously moving the connected movable base towards the fixed base. One end of the first rotating rod follows the movement of the movable base, while the other end, changing position, drives the transmission block to rotate. The transmission block, via a connected second rotating rod, drives another movable base to move synchronously towards the fixed base. As the two sets of connecting blocks move, they simultaneously tighten their respective connected positioning blocks towards the center point, thus completing the workpiece positioning. By using a single cylinder, workpiece positioning is achieved, reducing machine tool operating costs. Furthermore, the spindle's drive... Under the influence of the rotating shaft, the drill bit contacts the workpiece at high speed and cuts the workpiece material through its cutting edge. Water is sprayed from the inner cavity of the drill bit through the rotary joint to wash away the chips and reduce the temperature of the drill bit. At the same time, the lift continuously raises the position of the worktable, causing the sliding sleeve to slide along the outside of the guide column to control the drilling depth of the workpiece. The required hole is gradually formed, and the machining is completed. By adopting a simpler three-beam four-column body structure, the spindle is set in the center of the four sets of guide columns, solving the problem of uneven load on the drilling power shaft box. At the same time, the lifting machine is used for transmission, which realizes the adjustment of drilling depth. Attached Figure Description

[0019] Figure 1 A schematic diagram of a preferred embodiment of the three-beam four-column high-speed drilling machine tool provided by this utility model;

[0020] Figure 2 A schematic diagram of the transmission component structure provided by this utility model;

[0021] Figure 3 A schematic diagram of the guide component structure provided by this utility model;

[0022] Figure 4 A schematic diagram of the rotating component structure provided by this utility model.

[0023] In the diagram: 1. Bottom beam; 2. Guide assembly; 21. Guide column; 22. Sliding sleeve; 3. Top beam; 4. Worktable; 5. Protective assembly; 51. Support base; 52. Protective cover; 6. Servo motor; 7. Transmission assembly; 71. Transmission wheel; 72. Synchronous belt; 8. Spindle; 9. Drill bit; 10. Rotary joint; 11. Lift; 12. Connecting assembly; 121. Fixed rod; 122. Moving seat; 13. Fixed seat; 14. Cylinder; 15. Rotating assembly; 151. First rotating rod; 152. Second rotating rod; 16. Limiting assembly; 161. Connecting block; 162. Limiting groove; 17. Positioning block; 18. Transmission block. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-4 As shown, a three-beam four-column high-speed drilling machine tool includes a bottom beam 1, which serves as the basic structure of the machine tool, providing stable support for the entire machine tool and ensuring its stability and reliability during operation. A guide assembly 2 is provided on the top of the bottom beam 1, and a top beam 3 and a worktable 4 are provided on the outer side of the guide assembly 2. The top beam 3 is located on the top of the machine tool and corresponds to the bottom beam 1, providing support for the top structure of the machine tool. The worktable 4 is the main working area of ​​the machine tool, used to support and fix the workpiece to be processed.

[0026] The protective component 5 is located on the outer side of the bottom beam 1 and the top beam 3. A servo motor 6 is installed on the outer side of the protective component 5. This servo motor has a higher drilling torque, and its speed can be adjusted by the control system to meet different processing requirements. A transmission component 7 is installed at the output end of the servo motor 6. The spindle 8 is located inside the transmission component 7 and rotates at high speed with the servo motor 6 via the transmission component 7. A bearing seat is installed on the inner side of the top beam 3, which is rotatably connected to the outer side of the spindle 8 to improve the stability of the spindle 8 under high-speed rotation. Its inner side is a cavity for conveying water. A rotary joint 10 is installed at one end of the top side of the spindle 8. This is a sealed rotary connector capable of rotating 360 degrees to convey media. Its main function is to convey water from the connected water supply pipe to the rotating drill bit 9. A drill bit 9 is installed at one end of the bottom side of the spindle 8 for drilling holes in the workpiece. By rotating at high speed with the spindle 8, the drill bit 9 uses its cutting edge to cut the workpiece material, removing excess material and forming a hole. The center of the hole is a cavity for spraying water.

[0027] The top of the bottom beam 1 is equipped with a lifting mechanism 11 for adjusting the height of the worktable 4. It consists of a servo motor, a belt drive structure and a push rod. The output shaft of the servo motor drives the pulley connected to it to rotate. The pulley transmits power to the pulley connected to the push rod through the belt. While the pulley rotates, it drives the push rod to rise and fall through the pulley and other connecting mechanisms. This is used to drive the worktable 4 to rise and fall along the guide column 21, adjust the height of the worktable 4, and thus control the drilling depth of the drill bit 9 on the workpiece. This is existing technology and will not be described in detail here.

[0028] The connecting component 12 is located at the bottom of the worktable 4. A fixed seat 13 is located on the outside of the connecting component 12. A cylinder 14 is located on the outside of the fixed seat 13. The piston rod of the cylinder 14 is fixedly connected to the outside of the fixed seat 13. The transmission block 18 rotates on the top of the fixed seat 13. A rotating component 15 is located on the outside of the transmission block 18. Two sets of limiting components 16 are symmetrically arranged on the inner side of the worktable 4. A positioning block 17 for fixing the workpiece is provided on the outside of both sets of limiting components 16. When the two positioning blocks 17 are tightly attached to the outside of the workpiece, they can form a positioning clamp for the workpiece.

[0029] The guide assembly 2 includes four guide columns 21 fixed to the top of the bottom beam 1 to support the top beam 3. Since the main shaft 8 is set on the four guide columns 21, it can effectively solve the problem of uneven load on the drilling power shaft box. Sliding sleeves 22 are slidably connected to the outer side of each of the four guide columns 21. The outer side of the sliding sleeves 22 is fixedly connected to the inner side of the worktable 4, and the other end of the four guide columns 21 is fixedly connected to the bottom of the top beam 3. When the lift 11 is started, the worktable 4 slides along the outer side of the guide columns 21 through the sliding sleeves 22. The guide columns 21 guide the movement path of the worktable 4 and ensure stability when adjusting the drilling depth.

[0030] The protective assembly 5 includes a support base 51 fixed to the bottom of the bottom beam 1 to improve the stability of the bottom beam 1 and provide support for the entire machine tool; a protective cover 52 is installed on the top of the top beam 3, which is fixedly connected to the top of the top beam 3 through a connector to protect the transmission assembly 7 and prevent the operator from contacting components such as the high-speed rotating spindle 8; and a servo motor 6 is installed on the top of the protective cover 52.

[0031] The transmission assembly 7 includes a transmission wheel 71 located at the output end of the servo motor 6. When the servo motor 6 starts, it drives the transmission wheel 71 to rotate at high speed. The inner side of the transmission wheel 71 and the outer side of the main shaft 8 are rotatably connected to a synchronous belt 72. The transmission wheel 71 and the outer side of the main shaft 8 are provided with toothed structures to tightly mesh with the synchronous belt 72, ensuring efficient and stable transmission.

[0032] The connecting assembly 12 includes a fixed rod 121 fixed to the bottom of the workbench 4, with connecting seats fixed at both ends, and is fixedly installed on the bottom of the workbench 4 via the connecting seats; two movable seats 122 are slidably connected to the outer side of the fixed rod 121, and a cylinder 14 is fixedly connected to one side of one of the movable seats 122. The bottom of the cylinder 14 is fixedly installed on one side of one of the movable seats 122, and the piston rod of the cylinder 14 is fixedly connected to the outer side of the fixed seat 13. When the cylinder 14 moves, it drives the movable seat 122 connected to it to move accordingly; and the outer side of the fixed rod 121 is fixedly connected to the inner side of the fixed seat 13; the rotating assembly 15 includes a first rotating rod 151 rotating on the top of the movable seat 122, and a transmission block 18 is rotatably connected to the other end of the first rotating rod 151, and the other end of the transmission block 18 is rotatably connected to... A second rotating rod 152 is connected. While one end of the first rotating rod 151 moves with the moving seat 122, the other end drives the transmission block 18 to rotate as the position changes. At the same time, the transmission block 18 carries the second rotating rod 152 to complete the corresponding movement, so that the two moving seats 122 move in opposite directions. The limiting component 16 includes a connecting block 161 fixed to the top of the moving seat 122. A limiting groove 162 is opened on the inner side of the worktable 4. The top of the connecting block 161 is fixedly connected to the bottom of the positioning block 17, and the outer side of the connecting block 161 is slidably connected to the inner side of the limiting groove 162. When the moving seat 122 moves, it drives the connecting block 161 to slide along the inner side of the limiting groove 162. The limiting groove 162 restricts the movement path of the moving seat 122. At the same time, the connecting block 161 drives the positioning block 17 to move along a predetermined route.

[0033] Working Principle: During operation, when drilling a workpiece, the workpiece is first placed on top of the worktable 4. Then, the cylinder 14 is activated, and its piston rod, fixed to one side of the fixed seat 13, retracts. Simultaneously, it drives the connected movable seat 122 to move towards the fixed seat 13. One end of the first rotating rod 151 follows the movable seat 122, while the other end, with its changing position, drives the transmission block 18 to rotate. The transmission block 18, through the connected second rotating rod 152, drives another movable seat 122 to move synchronously towards the fixed seat 13. As the two sets of connecting blocks 161 move, they simultaneously drive their respective connected positioning blocks 17 to tighten towards the center point, thus completing the drilling process. The workpiece is positioned, and then the servo motor 6 drives the transmission wheel 71 to rotate at high speed. The synchronous belt 72 drives the spindle 8 to rotate synchronously. As the spindle 8 rotates, the drill bit 9 installed at the end of the spindle 8 also rotates. Driven by the spindle 8, the drill bit 9 contacts the workpiece in a high-speed rotating manner and cuts the workpiece material through its cutting edge. Water is sprayed out from the inner cavity of the drill bit 9 through the rotary joint 10 to wash away the chips and reduce the temperature of the drill bit 9. At the same time, the lift 11 continuously raises the position of the worktable 4, so that the sliding sleeve 22 slides along the outside of the guide post 21 to control the drilling depth of the workpiece. Then, the required hole is gradually formed, and the processing is completed.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A three-beam four-column high-speed drilling machine tool, characterized by, Include: The bottom beam (1), the top of the bottom beam (1) is provided with a guide assembly (2), the outer side of the guide assembly (2) is provided with a roof beam (3) and a workbench (4); The protective assembly (5) is arranged on the outer side of the bottom beam (1) and the roof beam (3), the outer side of the protective assembly (5) is provided with a servo motor (6), the output end of the servo motor (6) is provided with a transmission assembly (7); The main shaft (8) is arranged on the inner side of the transmission assembly (7), the top side of the main shaft (8) is provided with a rotary joint (10), the bottom side of the main shaft (8) is provided with a drill bit (9) for drilling holes in the workpiece, the top of the bottom beam (1) is provided with a lifting machine (11) for adjusting the height of the workbench (4); The connecting assembly (12) is arranged on the bottom of the workbench (4), the outer side of the connecting assembly (12) is provided with a fixed seat (13), the outer side of the fixed seat (13) is provided with a pneumatic cylinder (14); The transmission block (18) is rotated on the top of the fixed seat (13), the outer side of the transmission block (18) is provided with a rotating assembly (15), the inner side of the workbench (4) is symmetrically provided with two sets of limiting assemblies (16), and the outer side of the two sets of limiting assemblies (16) is provided with a positioning block (17) for fixing the workpiece.

2. A three-column high-speed drilling machine according to claim 1, characterized in that: The guide assembly (2) includes four guide columns (21) fixed to the top of the bottom beam (1), the outer side of the four guide columns (21) is slidably connected with a sliding sleeve (22), the outer side of the sliding sleeve (22) is fixedly connected with the inner side of the workbench (4), and the other end of the four guide columns (21) is fixedly connected with the bottom of the roof beam (3).

3. The three-beam four-column high-speed drilling machine according to claim 1, characterized in that: The protective assembly (5) includes a support seat (51) fixed to the bottom of the bottom beam (1), the top of the roof beam (3) is provided with a protective cover (52), and the top of the protective cover (52) is provided with a servo motor (6).

4. The three-beam four-column high-speed drilling machine according to claim 1, characterized in that: The transmission assembly (7) includes a transmission wheel (71) arranged on the output end of the servo motor (6), and the inner side of the transmission wheel (71) and the outer side of the main shaft (8) are rotatably connected with a synchronous belt (72).

5. The three-beam four-column high-speed drilling machine according to claim 1, characterized in that: The connecting assembly (12) includes a fixed rod (121) fixed to the bottom of the workbench (4), the outer side of the fixed rod (121) is slidably connected with two moving seats (122), and one side of one of the moving seats (122) is fixedly connected with the pneumatic cylinder (14), and the outer side of the fixed rod (121) is fixedly connected with the inner side of the fixed seat (13).

6. A three-column high-speed drilling machine according to claim 5, characterized in that: The rotating assembly (15) includes a first rotating rod (151) rotating on the top of the moving seat (122), the other end of the first rotating rod (151) is rotatably connected with the transmission block (18), and the other end of the transmission block (18) is rotatably connected with a second rotating rod (152).

7. A three-column high-speed drilling machine according to claim 5, characterized in that: The limiting assembly (16) includes a connecting block (161) fixed to the top of the moving seat (122), the inner side of the workbench (4) is provided with a limiting groove (162), the top of the connecting block (161) is fixedly connected with the bottom of the positioning block (17), and the outer side of the connecting block (161) is slidably connected with the inner side of the limiting groove (162).

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