A new type of vertical drilling head

Abstract

The application discloses a novel vertical drilling head and belongs to the technical field of machining equipment. The vertical drilling head comprises a spindle box, a feeding driving element, a first servo motor, a spindle and a supporting structure. The feeding driving element and the spindle are arranged at the two ends of the spindle box respectively, and the first servo motor drives the spindle to rotate through a transmission structure. The innovation point lies in the optimized design of the supporting structure. The second servo motor is lifted to be higher than the mounting block of the spindle and the first servo motor through two high supporting arms, so that the staggered layout with the spindle and the first servo motor is formed. The screw rod mechanism is arranged horizontally between the spindle and the first servo motor, the screw rod is driven by the second servo motor to drive the nut sleeve and the supporting frame to move, and the drill sleeve extended at the bottom end of the supporting frame is provided with a guide through hole. The structure effectively shortens the length of the spindle box through the three-dimensional space staggered layout, so that the overall structure of the head is compact, the machining stability is enhanced, and the installation space is saved.

Description

Technical Field

[0001] This application relates to the technical field of machining equipment, and more specifically, to a novel vertical drilling head. Background Technology

[0002] The vertical drilling head is the core component of a vertical drilling machine, primarily responsible for driving the drill bit to perform drilling operations. In related technologies, a vertical drilling head typically includes a spindle system, a feed system, and a drill bit support structure. The spindle system includes a spindle box and servo motors and a spindle mounted on it. The servo motors drive the spindle to rotate via a transmission structure. A clamping structure is located at the bottom of the spindle to hold the drill bit. The drill bit is rotated by the spindle to perform workpiece machining. The feed system and drill bit support are also mounted on the spindle box and arranged in the same direction as the servo motors and spindle. The feed system controls the vertical feed (downward / backward) of the drill bit, while the drill bit support structure helps prevent the drill bit from wobbling.

[0003] Using the aforementioned technologies, the servo motors, spindles, drill bit support structures, and feed systems arranged in the same direction result in a longer lateral length of the vertical drilling head, which occupies more installation space. Furthermore, the longer vertical drilling head has a longer lever arm and a more dispersed mass distribution, which can easily cause shaking during processing and affect the processing effect. Utility Model Content

[0004] To address the issues of excessive lateral length in vertical drilling rig heads, which occupy considerable installation space and are prone to wobbling, this application provides a novel column drilling rig head.

[0005] A novel vertical drilling rig head includes a spindle box, a feed drive, a first servo motor, a spindle, and a support structure. The feed drive is located at one end of the spindle box, and the spindle is rotatably located at the other end of the spindle box. The first servo motor is mounted on the spindle box and positioned between the spindle and the feed drive. A transmission structure is provided between the first servo motor and the spindle, through which the first servo motor drives the spindle to rotate. The support structure includes a second servo motor, a lead screw, a support frame, a nut sleeve, and a motor frame. The motor frame includes two support arms fixed to the spindle box and located on opposite sides of the first servo motor. A mounting block is connected to the top of the boom near the main shaft, and the mounting block is higher than the first servo motor and the main shaft. The second servo motor is fixed to the top of the mounting block and has overlapping parts with both the main shaft and the first servo motor. The lead screw and the support frame are both located between the main shaft and the first servo motor. One end of the lead screw is connected to the drive shaft of the second servo motor, and the other end of the lead screw is rotatably connected to the main shaft box. The nut sleeve is fitted on the outer wall of the lead screw and threadedly connected to the lead screw. The support frame is connected and fixed to the nut sleeve, and a drill sleeve is provided at the bottom end of the support frame extending towards the bottom end of the main shaft. The drill sleeve has a through hole.

[0006] Preferably, both of the support arms are connected to the main spindle box by bolts.

[0007] Preferably, the support frame includes two connecting arms, which are located on opposite sides of the spindle box, and a crossbeam is provided at the top of the two connecting arms. The nut sleeve is connected to the middle of the crossbeam, and the drill sleeve is extended by the two connecting arms.

[0008] Preferably, both connecting arms are provided with vertical slide rails, and sliders are provided on opposite sides of the spindle box. One slide rail is slidably connected to one slider, and the other slide rail is slidably connected to the other slider.

[0009] Preferably, the feed drive is a vertically arranged hydraulic cylinder.

[0010] The beneficial technical effects of this application are as follows: by raising the second servo motor with two support arms, the second servo motor is made higher than the spindle and the first servo motor, so that the installation of the second servo motor avoids the spindle and the first servo motor. This makes it easier to shorten the distance between the spindle and the first servo motor, thus shortening the length of the spindle box. By setting the second servo motor to have an intersecting part with the spindle and the first servo motor, the length of the spindle box is shortened, thereby achieving a shorter overall length of the vertical drilling head. This makes the vertical drilling head more stable and less prone to shaking during processing, and saves installation space. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of a novel vertical drilling head according to this embodiment.

[0012] Figure 2 This is a schematic diagram of the spindle box structure in this embodiment.

[0013] Figure 3 This is a schematic diagram of the support structure in this embodiment.

[0014] Reference numerals: 1. Spindle box; 11. First receiving groove; 12. Protrusion; 13. Opening; 14. Second receiving groove; 15. Connecting channel; 16. Side plate; 161. Slider; 17. Connecting bridge; 2. Feed drive component; 3. First servo motor; 4. Spindle; 41. Clamping device; 42. Drill bit; 5. Support structure; 51. Second servo motor; 52. Lead screw; 53. Support frame; 531. Connecting arm; 5311. Slide rail; 532. Crossbeam; 533. Drill sleeve; 5331. Through hole; 54. Nut sleeve; 55. Motor frame; 551. Support arm; 552. Mounting block; 6. Transmission structure. Detailed Implementation

[0015] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0016] Reference Figure 1 A novel vertical drilling head includes a spindle box 1, a feed drive component 2, a first servo motor 3, a spindle 4, and a support structure 5. The spindle box 1 is rectangular in shape, and a first receiving groove 11 is recessed at one end of the top surface of the spindle box 1. Two protrusions 12 are protruding on opposite sides of the first receiving groove 11 on the top surface of the spindle box 1. The feed drive component 2 is a hydraulic cylinder, which is vertically arranged and its tail end is inserted into the first receiving groove 11 for receiving. A connecting block is provided on the outer wall of the hydraulic cylinder. The connecting block abuts against the top surface of the two protrusions 12 and is connected and fixed to the protrusions 12 by bolts.

[0017] Reference Figure 1 and Figure 2 The top surface of the spindle box 1 has an opening 13 at the end away from the feed drive 2. A bearing is built into the opening 13. The spindle 4 passes through the bearing and is connected to the bearing, so that the spindle 4 is rotatably mounted on the spindle box 1. A clamping device 41 is provided at the bottom end of the spindle 4. The clamping device 41 clamps the drill bit 42. The clamping device 41 is prior art and will not be described in detail in this application.

[0018] Reference Figure 1 and Figure 2 A second receiving groove 14 is provided on the top surface of the spindle box 1 between the opening 13 and the first receiving groove 11. The drive shaft of the first servo motor 3 passes through the second receiving groove 14 and is received. The first servo motor 3 is connected to a fixing plate, and the fixing plate is fixed to the spindle box 1 by bolts to achieve the connection and fixation of the first servo motor 3 and the spindle box 1. A connecting channel 15 is provided between the second receiving groove 14 and the opening 13 to achieve communication between the second receiving groove 14 and the opening 13. Furthermore, a connection is provided between the first servo motor 3 and the spindle 4. The transmission structure 6 (not shown in the figure) includes a first pulley mounted on the drive shaft of the first servo motor 3, a second pulley mounted on the spindle 4, and a transmission belt sleeved on the first pulley and the second pulley. The transmission structure 6 is bypassed by a connecting channel 15, and for ease of installation, the connecting channel 15 passes through the top surface of the spindle box 1. The first servo motor 3 drives the first pulley to rotate, which in turn drives the transmission belt to rotate the second pulley and the spindle 4. The rotation of the spindle 4 causes the drill bit 42 to rotate.

[0019] Reference Figure 1 and Figure 2 The spindle box 1 also has two side plates 16 formed on opposite sides. The width of the two side plates 16 covers the oil cylinder and the first servo motor 3, and the length of the two side plates 16 extends upward to the top of the spindle box 1. The support structure 5 includes a second servo motor 51, a lead screw 52, ​​a support frame 53, a nut sleeve 54, and a motor frame 55. The motor frame 55 includes two support arms 551. One support arm 551 is bolted to the top of one side plate 16 and positioned to align with the first servo motor 3. The other support arm 551 is bolted to the top of the other side plate 16 and positioned to align with the first servo motor 3. The top end of the support arm 551, near the main shaft 4, is connected to a mounting block 552. The mounting block 552 is higher than the first servo motor 3 and the main shaft 4. The second servo motor 51 is fixed to the top of the mounting block 552 and has overlapping parts with both the main shaft 4 and the first servo motor 3. The lead screw 52 and the support frame 53 are both located between the main shaft 4 and the first servo motor 3. One end of the lead screw 52 is connected to the drive shaft of the second servo motor 51. A connecting bridge 17 spanning the connecting channel 15 is provided on the top surface of the main shaft box 1. The other end of the lead screw 52 is rotatably connected to the connecting bridge 17. The nut sleeve 54 is sleeved on the outer wall of the lead screw 52 and threadedly connected to the lead screw 52.

[0020] Reference Figure 1 and Figure 3The support frame 53 includes two connecting arms 531, which are located on opposite sides of the spindle box 1. A crossbeam 532 is provided at the top of the two connecting arms 531. The nut sleeve 54 is connected to the middle of the crossbeam 532. The bottom ends of the two connecting arms 531 extend towards the bottom end of the spindle 4 and are provided with drill sleeves 533. The drill sleeves 533 are provided with through holes 5331. The drill bit 42 is inserted into the through hole 5331 and is supported by the support frame 53 so that it is not easy to shake. The second servo motor 51 drives the lead screw 52 to rotate. The rotation of the lead screw 52 drives the nut sleeve 54 to rise and fall. The rise and fall of the nut sleeve 54 drives the support frame 53 to rise and fall, so that the support frame 53 supports drill bits 42 of different lengths. The rise and fall of the support frame 53 also presses against the workpiece, so that the workpiece is not easy to move or deviate during processing.

[0021] Reference Figure 1 and Figure 3 Both connecting arms 531 are provided with slide rails 5311 on the side away from the main shaft 4, and the two side plates 16 are provided with sliders 161 on the side closer to the main shaft 4. One slide rail 5311 is slidably connected to one slider 161 on the same side, and the other slide rail 5311 is slidably connected to another slider 161 on the same side, so that the support frame 53 can be raised and lowered stably.

[0022] The implementation principle of this novel vertical drill bit is as follows: The end of the spindle box 1 furthest from the spindle 4 is slidably connected to the machine tool column. The telescopic shaft of the hydraulic cylinder is connected to the column. A first servo motor 3 drives the first pulley to rotate, which in turn drives the second pulley and the spindle 4 via a transmission belt, causing the spindle 4 to rotate and thus rotating the drill bit 42. The rotation of the drill bit 42 enables the machining of the workpiece. The telescopic shaft of the hydraulic cylinder extends and retracts to control the vertical feed of the drill bit 42. A second servo motor 51 drives the lead screw 52 to rotate, which in turn causes the nut sleeve 54 to rise and fall. The rising and falling of the nut sleeve 54 causes the support frame 53 to rise and fall, enabling the support frame 53 to support drill bits 42 of different lengths and provide support. The lifting mechanism of the support frame 53 also presses against the workpiece, making it less likely for the workpiece to move or deviate during processing. In the support structure 5, the second servo motor 51 is raised by two support arms 551, making the second servo motor 51 higher than the spindle 4 and the first servo motor 3. This allows the second servo motor 51 to be installed to avoid the spindle 4 and the first servo motor 3, which facilitates shortening the distance between the spindle 4 and the first servo motor 3 and thus shortening the length of the spindle box 1. By setting the second servo motor 51 to have an intersecting part with the spindle 4 and the first servo motor 3, the length of the spindle box 1 is shortened, thereby achieving a shorter overall length of the vertical drill head. This makes the vertical drill head more stable during processing, less prone to shaking, and saves installation space.

[0023] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A new type of stand-alone drilling head, characterized in that: The system includes a spindle box, a feed drive, a first servo motor, a spindle, and a support structure. The feed drive is located at one end of the spindle box, and the spindle is rotatably located at the other end of the spindle box. The first servo motor is mounted on the spindle box and positioned between the spindle and the feed drive. A transmission structure is provided between the first servo motor and the spindle, through which the first servo motor drives the spindle to rotate. The support structure includes a second servo motor, a lead screw, a support frame, a nut sleeve, and a motor frame. The motor frame includes two support arms fixed to the spindle box and located on opposite sides of the first servo motor. The tops of the two support arms are positioned near... A mounting block is connected to one side of the main spindle, and the mounting block is higher than the first servo motor and the main spindle. The second servo motor is fixed to the top of the mounting block and has overlapping parts with both the main spindle and the first servo motor. The lead screw and the support frame are both located between the main spindle and the first servo motor. One end of the lead screw is connected to the drive shaft of the second servo motor, and the other end of the lead screw is rotatably connected to the spindle box. The nut sleeve is sleeved on the outer wall of the lead screw and threadedly connected to the lead screw. The support frame is connected and fixed to the nut sleeve, and a drill sleeve is provided at the bottom end of the support frame extending towards the bottom end of the main spindle. The drill sleeve has a through hole.

2. A new type of stand-by-the-drill head according to claim 1, characterized in that: Both of the support arms are connected to the main spindle box by bolts.

3. The novel vertical drilling head according to claim 1, characterized in that: The support frame includes two connecting arms, which are located on opposite sides of the spindle box. A crossbeam is provided at the top of both connecting arms. The nut sleeve is connected to the middle of the crossbeam. The drill sleeve is extended by both connecting arms.

4. A novel vertical drilling head according to claim 3, characterized in that: Both connecting arms are equipped with vertical slide rails, and sliders are provided on opposite sides of the spindle box. One slide rail is slidably connected to one slider, and the other slide rail is slidably connected to the other slider.

5. A novel vertical drilling head according to claim 1, characterized in that: The feed drive component is a vertically arranged hydraulic cylinder.

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