A front magazine type drilling and tapping machine

Abstract

The application discloses a front tool magazine type drilling and tapping machine, which comprises a bed body, a workbench movement system, a five-axis rotary table, a column body, a tool magazine support, a main shaft movement system and a front tool magazine. The workbench movement system is arranged on the bed body and comprises a saddle, a workbench and two groups of guide driving assemblies, and can drive a workpiece to move along two intersecting horizontal directions; the five-axis rotary table is arranged on the workbench and is used for clamping and swinging the workpiece. The column body is connected to the bed body and located at the rear side of the workbench movement system, the front side of the column body is provided with a vertical main shaft guide area, and the two sides of the column body are provided with tool magazine mounting parts. The tool magazine support adopts a portal structure formed by two cantilever arms and a front connecting beam, the rear ends of the two cantilever arms are connected with the tool magazine mounting parts, the front ends are connected through the front connecting beam, the avoiding space formed by the two cantilever arms is opposite to the main shaft guide area to form a main shaft avoiding area, and the front tool magazine is connected to the front connecting beam. The application has the advantages of compact layout, short tool changing stroke, high rigidity of the support, effective avoidance of movement interference, improved tool changing efficiency and running stability of the whole machine.

Description

Technical Field

[0001] This invention specifically relates to a front-mounted tool magazine type drilling and tapping machine. Background Technology

[0002] Drilling and tapping machines are high-speed CNC machine tools designed for drilling and tapping processes, widely used in the processing of small parts in fields such as electronics, precision hardware, and automotive parts. With the increasing demand for complex curved surfaces and multi-face integrated machining, five-axis drilling and tapping machines equipped with five-axis rotary tables have become the industry's development direction. Through the linkage of the worktable translation and the rotary table swing, they can realize the completion of multi-face machining of workpieces in one clamping, greatly reducing clamping errors and auxiliary time.

[0003] As a core functional component of automatic tool changers, the layout of the tool magazine directly affects the overall size of the machine tool, tool changing efficiency, and operational rigidity. Existing drilling and tapping machines mostly use side-mounted or top-mounted tool magazines: side-mounted tool magazines, installed on the side of the column or bed, significantly increase the machine tool's lateral width, which is not conducive to dense equipment arrangement in the workshop, and the spindle needs to move laterally to the tool magazine station during tool changing, resulting in a long tool changing stroke and low efficiency; top-mounted tool magazines, installed on top of the spindle box or column, raise the machine tool's center of gravity, weakening the overall dynamic rigidity, and making high-altitude maintenance inconvenient.

[0004] To shorten the tool change stroke, some models have attempted to adopt a front-mounted tool magazine layout. However, the existing solutions generally have the following drawbacks: First, they mostly use a single cantilever bracket fixed to the front of the column, which has weak load-bearing capacity and poor torsional rigidity. The tool magazine is prone to vibration during operation, affecting tool change accuracy and tool life. Second, the bracket structure is prone to encroaching on the vertical movement space of the spindle. To avoid interference, the front-to-back distance between the column and the worktable needs to be increased, resulting in an increase in the overall length of the machine tool and a larger footprint. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the technical problem to be solved by the present invention is to provide a front-mounted tool magazine type drilling and tapping machine.

[0006] A front-mounted tool magazine type drilling and tapping machine, comprising:

[0007] Bed frame;

[0008] A worktable motion system is mounted on a bed and includes a saddle, a worktable, a first guide drive assembly, and a second guide drive assembly. The saddle is slidably mounted on the bed via the first guide drive assembly and is capable of moving along a first horizontal direction. The worktable is slidably mounted on the saddle via the second guide drive assembly and is capable of moving along a second horizontal direction intersecting the first horizontal direction.

[0009] A five-axis rotary table is set on a worktable to hold the workpiece and drive it to swing.

[0010] The column body is connected to the bed and is located at the rear of the worktable motion system. A spindle guide area extending vertically is provided on its front side and above the worktable motion system. Tool magazine mounting parts are provided on both sides of the spindle guide area.

[0011] The tool magazine support includes a first cantilever and a second cantilever extending in the front-rear direction and arranged opposite to each other. The rear ends of the first cantilever and the second cantilever are respectively connected to the two tool magazine mounting parts. The front ends of the first cantilever and the second cantilever are connected by a front connecting beam. The first cantilever, the second cantilever and the front connecting beam form a first clearance space. The first clearance space and the spindle guide area are arranged opposite to each other in the front-rear direction so that the two together form a clearance area for the installation and movement of the machine tool spindle.

[0012] The spindle motion system can be positioned within the clearance zone;

[0013] A front-mounted tool magazine, which is connected to the front connecting beam.

[0014] In one embodiment, the first guide drive assembly includes two parallel first linear guide rails and a first feed assembly located between the two first linear guide rails; wherein, the first feed assembly includes a first drive motor, a first lead screw and a first nut, the first drive motor drives the first lead screw to rotate, and the first nut is threadedly fitted onto the first lead screw and connected to the saddle, so as to drive the saddle to reciprocate along the Y direction.

[0015] In one embodiment, the second guide drive assembly includes two parallel second linear guide rails and a second feed assembly located between the two second linear guide rails; wherein, the second feed assembly includes a second drive motor, a second lead screw and a second nut, the second drive motor drives the second lead screw to rotate, and the second nut is threadedly fitted onto the second lead screw and connected to the worktable, so as to drive the worktable to reciprocate along the X direction.

[0016] In one embodiment, the tool magazine mounting part has a mounting surface that extends longitudinally and is perpendicular to the horizontal plane. A plurality of first mounting holes are arranged at intervals on the mounting surface. The inner surfaces of the first cantilever and the second cantilever are respectively parallel to each other and abut against the mounting surface. A transverse elongated hole is provided on the first cantilever and the second cantilever, respectively, corresponding to the position of the first mounting hole. A bolt that can be threaded and fastened to the first mounting hole is inserted into the transverse elongated hole. A stabilizing groove is recessed in the mounting surface along the front-back direction. The inner surfaces of the first cantilever and the second cantilever are provided with flanges that can fit into the stabilizing groove.

[0017] In one embodiment, a calibration component is further included. Two calibration components are provided, each corresponding to a first linear guide rail and a second linear guide rail. Each calibration component includes a first reference block and a second reference block that are parallel to each other. A guide rail mounting area is formed between the first and second reference blocks. The first or second linear guide rail is mounted within the guide rail mounting area. The second reference block has a cavity. A plurality of pin assemblies are evenly distributed within the cavity along the length of the second reference block. Each pin assembly is movably inserted into the cavity and can movably protrude outwards from the side of the second reference block facing the first reference block. A movable seat that can move along the length of the second reference block is movably disposed within the cavity. A plurality of driving components are distributed along the length of the movable seat. Each driving component corresponds to a pin assembly. The driving component can drive the pin assembly to move as the movable seat moves, causing the pin assembly to move and protrude outwards to press against one side of the first or second linear guide rail. A driving member that can drive the movable seat to move is provided on the second reference block.

[0018] In one embodiment, the driving assembly includes a fixed plate, a guide plate, a movable plate, and an adjustment structure. The fixed plate is fixedly mounted on the movable seat, the movable plate is mounted on the movable seat and can move relatively closer to or away from the pin assembly, the guide plate is inclined and hinged between the fixed plate and the movable plate, and the guide plate can press against one end of the pin assembly one by one as the movable seat moves, and the adjustment structure is mounted on the movable seat to power and drive the movable plate to move.

[0019] In one embodiment, the adjustment structure includes an adjustment screw that is threadedly inserted into the movable seat, one end of the adjustment screw being fixed to a fixing block, and the fixing block being rotatably connected to the movable plate via a bearing.

[0020] In one embodiment, the pin assembly includes a top pin and a spring. A plurality of guide holes are arranged through the cavity along its length on the side facing the first reference block. The top pin is movably inserted into the guide holes one by one. A limiting flange is provided on the top pin inside the cavity. The spring is sleeved on the top pin and abuts against the limiting flange and the side wall of the cavity. The spring keeps the top pin in a movable tendency to be accommodated in the cavity.

[0021] In one embodiment, the driving member includes a screw rotatably disposed within a cavity, one end of which extends to the outside of the second reference block and is provided with a knob.

[0022] In summary, the advantages of this invention over the prior art are:

[0023] This invention adopts a front-mounted tool magazine layout, with the tool magazine bracket extending forward from both sides of the column. The tool magazine is located in front of the spindle, without occupying the side space of the machine tool. The overall width of the machine is small, making it suitable for dense layout in the workshop. The first clearance space enclosed by the gantry bracket aligns with the spindle guide area to form a clearance zone, providing ample space for the spindle to move. There is no need to increase the front-to-back distance between the column and the worktable, effectively controlling the overall length of the machine tool and reducing the floor space.

[0024] Furthermore, the tool magazine bracket adopts a portal frame structure with double cantilever and front connecting beam. The two cantilever arms are connected to the tool magazine mounting parts on both sides of the column respectively. The stress points are distributed symmetrically, the column is subjected to balanced force, and it is not easy to deform during long-term operation. The torsional and bending resistance of the portal structure is significantly better than that of the single cantilever scheme. It can stably support the weight of the front tool magazine, suppress the vibration of the tool magazine operation, and improve the tool changing accuracy and equipment reliability.

[0025] Furthermore, the front tool magazine is positioned directly in front of the spindle, so the spindle only needs to move vertically to the tool change height to complete the tool change, without the need for additional horizontal or vertical translation. The tool change stroke is short and the action is simple, greatly improving the tool change efficiency and making it suitable for the high-speed machining cycle of drilling and tapping machines.

[0026] Furthermore, the guide rail calibration assembly provides an installation reference through the reference block, and multiple sets of pin assemblies can simultaneously tighten the side of the guide rail without adjusting the side screws one by one, which greatly improves the installation and calibration efficiency of the linear guide rail; the evenly distributed tightening points can ensure that the force is consistent along the entire length of the guide rail, avoid local deformation, and improve the parallelism of the guide rail installation and the long-term accuracy retention. Attached Figure Description

[0027] Figure 1 This is a perspective view of a front-mounted tool magazine type drilling and tapping machine according to one embodiment of the present invention;

[0028] Figure 2 This is one of the partial exploded views of a front-mounted tool magazine type drilling and tapping machine according to one embodiment of the present invention;

[0029] Figure 3 This is a second partially exploded view of a front-mounted tool magazine type drilling and tapping machine according to one embodiment of the present invention;

[0030] Figure 4 This is a partial exploded view (3) of a front-mounted tool magazine type drilling and tapping machine according to one embodiment of the present invention;

[0031] Figure 5 This is a partial exploded view (4) of a front-mounted tool magazine type drilling and tapping machine according to one embodiment of the present invention. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0033] like Figures 1 to 5The embodiment of the present invention preferably provides a front-mounted tool magazine type drilling and tapping machine, including: a bed 1; a worktable motion system 2, which is disposed on the bed 1, including a saddle 3, a worktable 4, a first guide drive assembly 5 and a second guide drive assembly 6, wherein the saddle 3 is slidably disposed on the bed 1 via the first guide drive assembly 5 and is capable of moving along a first horizontal direction, and the worktable 4 is slidably disposed on the saddle 3 via the second guide drive assembly 6 and is capable of moving along a second horizontal direction intersecting the first horizontal direction; a five-axis rotary table 7, which is disposed on the worktable 4 for clamping workpieces and driving workpieces to swing; a column body 8, which is connected to the bed 1 and located on the rear side of the worktable motion system 2, and has a main column extending vertically on its front side and above the worktable motion system 2. The spindle guide area 9 has tool magazine mounting parts 10 on both sides; a tool magazine bracket 11 includes a first cantilever 12 and a second cantilever 13 extending in the front-rear direction and arranged opposite to each other. The rear ends of the first cantilever 12 and the second cantilever 13 are respectively connected to the two tool magazine mounting parts 10. The front ends of the first cantilever 12 and the second cantilever 13 are connected by a front connecting beam 14. The first cantilever 12, the second cantilever 13 and the front connecting beam 14 form a first clearance space 16. The first clearance space 16 and the spindle guide area 9 are arranged opposite to each other in the front-rear direction so that the two can be combined to form a clearance area for the installation and movement of the machine tool spindle; a spindle motion system 17, which can be set in the clearance area; and a front tool magazine 18 connected to the front connecting beam 14.

[0034] Five-axis rotary tables are a relatively mature existing technology. They are equivalent to a direct-drive motor five-axis rotary table and direct-drive motor structure disclosed in Chinese Patent Publication No. CN122077416B. Their structural principles will not be described in detail here.

[0035] The spindle motion system is a relatively mature existing technology, which is equivalent to the gantry machine tool structure with the tool magazine mounted on the spindle frame disclosed in Chinese Patent Publication No. CN105750970B. Its structural principle will not be described in detail here. It is sufficient to meet the vertical displacement of the spindle and cooperate with the tool magazine for tool changing.

[0036] The front-mounted tool magazine is a relatively mature existing technology. It is equivalent to the front-mounted tool replacement structure for drilling and tapping machine disclosed in Chinese Patent Publication No. CN 223406543 U. Its structural principle will not be described in detail here. When changing tools, the front-mounted tool magazine rotates the next required tool to be directly below the clearance area where the machine tool spindle is installed. The spindle assembly installed in the clearance area moves downward to perform the tool changing operation.

[0037] Specifically, the machine is based on the bed, with the worktable motion system located at the front of the bed and the column body fixed at the rear of the bed, forming the main machine tool structure distributed front to back.

[0038] In the machining state: the first guide drive assembly drives the saddle to reciprocate along the first horizontal direction (front and back Y direction), and the second guide drive assembly drives the worktable to reciprocate along the second horizontal direction (left and right X direction). Together with the five-axis rotary table, they drive the workpiece to achieve swing indexing and complete the multi-degree-of-freedom position adjustment of the workpiece. The spindle motion system moves up and down in the vertical direction in the spindle guide area on the front side of the column, driving the spindle to perform machining actions such as drilling and tapping.

[0039] In tool-changing mode: The spindle motion system moves vertically to the tool-changing height and enters the clearance area enclosed by the tool magazine bracket; the front tool magazine is fixed on the front connecting beam at the front end of the tool magazine bracket, facing the front of the spindle. The tool magazine rotates to switch the target tool to the tool-changing position, and the spindle can complete the tool loading and unloading through vertical feed. The tool magazine bracket adopts a double cantilever symmetrical layout. The first and second cantilever extend forward from the tool magazine mounting parts on both sides of the column and are connected by the front connecting beam to form a portal frame. The first clearance space in the middle aligns with the spindle guide area, providing complete movement space for the spindle's lifting and tool-changing actions, and completely avoiding movement interference between the bracket and the spindle and tool holder.

[0040] Furthermore, the first guide drive assembly 5 includes two parallel first linear guide rails 19 and a first feed assembly located between the two first linear guide rails 19; wherein, the first feed assembly includes a first drive motor 20, a first lead screw 21 and a first nut 22, the first drive motor 20 drives the first lead screw 21 to rotate, and the first nut 22 is threadedly fitted onto the first lead screw 21 and connected to the saddle 3, so as to drive the saddle 3 to reciprocate along the Y direction.

[0041] Specifically, the first guide drive assembly adopts a structure with symmetrical support of dual guide rails and a central lead screw drive: two first linear guide rails are laid parallel on the bed, providing high-precision sliding guidance for the saddle; the first feed assembly is centrally located between the two guide rails, and the output torque of the first drive motor drives the first lead screw to rotate. Through the helical transmission pair between the lead screw and the first nut, the rotational motion is converted into linear motion, which drives the saddle to reciprocate along the first linear guide rail in the Y direction. The symmetrical layout ensures balanced force on the saddle, effectively suppressing off-center loading and vibration, and ensuring stable operation and positioning accuracy.

[0042] Furthermore, the second guide drive assembly 6 includes two parallel second linear guide rails 23 and a second feed assembly located between the two second linear guide rails 23; wherein, the second feed assembly includes a second drive motor 24, a second lead screw 25 and a second nut 26, the second drive motor 24 drives the second lead screw 25 to rotate, and the second nut 26 is threadedly fitted onto the second lead screw 25 and connected to the worktable 4, so as to drive the worktable 4 to reciprocate along the X direction.

[0043] Specifically, the second guide drive assembly adopts a structure with symmetrical support of dual guide rails and a central lead screw drive: two second linear guide rails are laid parallel on the saddle, providing high-precision sliding guidance for the worktable; the second feed assembly is centrally located between the two guide rails, and the output torque of the second drive motor drives the second lead screw to rotate. Through the helical transmission pair between the lead screw and the second nut, the rotational motion is converted into linear motion, which drives the worktable to reciprocate along the second linear guide rails in the X direction. The symmetrical layout ensures balanced force on the worktable, effectively suppressing off-center loading and vibration, and ensuring stable operation and positioning accuracy.

[0044] Furthermore, the tool magazine mounting part 10 has a mounting surface 27 that extends longitudinally and is perpendicular to the horizontal plane. A plurality of first mounting holes are arranged at intervals on the mounting surface 27. The inner sides of the first cantilever 12 and the second cantilever 13 are respectively parallel to each other and abut against the mounting surface 27. A transverse elongated hole 29 is provided on the first cantilever 12 and the second cantilever 13 respectively corresponding to the position of the first mounting hole. A bolt that can be threaded and fastened to the first mounting hole is inserted into the transverse elongated hole 29. A stabilizing groove 30 is recessed in the mounting surface 27 along the front-back direction. The inner sides of the first cantilever 12 and the second cantilever 13 are provided with flanges that can be fitted into the stabilizing groove 30.

[0045] Specifically, the first and second cantilever arms of the tool magazine bracket are respectively assembled on the tool magazine mounting parts on both sides of the column. The inner side of the cantilever arm is closely fitted with the vertical mounting surface of the tool magazine mounting part, and the mounting surface is used as the positioning reference to achieve surface contact fit.

[0046] During assembly and adjustment: the fastening bolt passes through the transverse elongated hole on the cantilever and is screwed into the first mounting hole on the mounting surface to achieve locking; with the help of the travel margin of the transverse elongated hole, the mounting position of the cantilever can be adjusted along the length of the hole, thereby calibrating the relative position of the front tool magazine and the spindle to ensure the coaxiality of tool changing.

[0047] In terms of rigidity enhancement: the flange on the inner side of the cantilever is embedded in the stable groove of the mounting surface. The interlocking structure increases the contact area and shear resistance of the connection part, restricts the vertical sway and torsional deformation of the cantilever, and greatly improves the connection rigidity and vibration resistance of the cantilever bracket.

[0048] Furthermore, the system also includes calibration components. Two calibration components are provided, each corresponding to a first linear guide rail 19 and a second linear guide rail 23. Each component includes a first reference block 31 and a second reference block 32 that are parallel to each other. A guide rail mounting area is formed between the first reference block 31 and the second reference block 32. The first linear guide rail 19 or the second linear guide rail 23 is mounted within the guide rail mounting area. The second reference block 32 has a cavity 33. A plurality of pin assemblies 34 are evenly distributed within the cavity 33 along its length. Each pin assembly 34 is movably inserted into the cavity 33. Component 34 is movably protruding outward from the second reference block 32 towards the first reference block 31. A movable seat 35 that can move along the length direction of the second reference block 32 is movably disposed in the cavity 33. A plurality of driving components 36 are distributed on the movable seat 35 along its length direction. The driving components 36 are arranged one-to-one with the pin components 34. The driving components 36 can drive the pin components 34 to move as the movable seat 35 moves, causing the pin components 34 to move and protrude outward to press against one side of the first linear guide rail 19 or the second linear guide rail 23. A driving member 99 that can drive the movable seat 35 to move is provided on the second reference block 32.

[0049] Specifically, the calibration component is used for parallelism calibration and lateral pre-tightening during the linear guide installation process. The first reference block and the second reference block are fixed in parallel, forming a guide rail installation area between them. The linear guide rail is placed in this area, with the inner surface of the first reference block serving as the positioning reference surface.

[0050] During calibration: The movable seat translates along the length of the second reference block, causing several sets of drive components on it to move synchronously. As the drive components move with the movable seat, they act sequentially on the corresponding pin components, causing the pin components to protrude outwards towards the first reference block and press evenly against the side of the linear guide rail, thus pressing the guide rail laterally against the first reference block and achieving lateral positioning calibration of the guide rail. Multiple sets of pin components are evenly distributed along the entire length of the guide rail, ensuring consistent lateral force on the guide rail, avoiding localized deformation, and guaranteeing the straightness and parallelism accuracy of the guide rail installation.

[0051] Furthermore, the drive assembly 36 includes a fixed plate 37, a guide plate 38, a movable plate 39, and an adjustment structure 40. The fixed plate 37 is fixedly mounted on the movable seat 35. The movable plate 39 is mounted on the movable seat 35 and can move relatively closer to or further away from the pin assembly 34. The guide plate 38 is inclined and hinged between the fixed plate 37 and the movable plate 39, and the guide plate 38 can press against one end of the pin assembly one by one as the movable seat 35 moves. The adjustment structure 40 is mounted on the movable seat 35 to power and drive the movable plate 39 to move.

[0052] Specifically, when the drive assembly moves synchronously with the moving seat, the inclined hinged guide plate moves towards the pin assembly along with the moving seat. The working surface of the guide plate gradually presses against the inner end of the pin assembly. Using the inclined plane transmission principle, the longitudinal translational displacement of the moving seat is converted into the lateral ejection displacement of the pin assembly, driving the pin assembly to eject outward.

[0053] When adjusting the clamping force: the movable plate is moved laterally on the moving seat by adjusting the structure, which changes the distance between the movable plate and the fixed plate, thereby adjusting the tilt angle of the guide plate; the larger the tilt angle of the guide plate, the greater the ejection stroke of the pin assembly and the stronger the clamping force under the same displacement, and vice versa, the clamping force is smaller, so as to achieve flexible adaptation of the clamping amount of the pin.

[0054] Furthermore, the adjustment structure 40 includes an adjustment screw 41 that is threadedly inserted into the movable seat 35. One end of the adjustment screw 41 is fixed with a fixing block, and the fixing block is rotatably connected to the movable plate 39 through a bearing.

[0055] Specifically, when adjusting the tightening force, rotating the adjusting screw converts the rotational motion into axial linear displacement of the adjusting screw through the threaded engagement between the adjusting screw and the movable seat. The end of the adjusting screw is rotatably connected to the movable plate through a bearing. Therefore, the axial movement of the adjusting screw can drive the movable plate to move synchronously. At the same time, the bearing structure can isolate the rotational motion, preventing the movable plate from rotating when the adjusting screw rotates, ensuring that the movable plate only makes linear displacement. This allows for stable and precise adjustment of the distance between the movable plate and the fixed plate, enabling fine-tuning of the guide plate angle and the tightening force of the pin.

[0056] Furthermore, the pin assembly includes a top pin 42 and a spring 43. A plurality of guide holes 44 are arranged through the cavity 33 along its length on the side facing the first reference block 31. The top pin 42 is movably inserted into the guide hole 44 in a corresponding manner. A limiting flange is provided on the top pin 42 within the cavity 33. The spring 43 is sleeved on the top pin 42 and abuts against the limiting flange and the side wall of the cavity 33. The spring 43 keeps the top pin 42 in a movable tendency to be accommodated within the cavity 33.

[0057] Specifically, under normal conditions, the spring abuts against the limiting flange of the top pin and the side wall of the cavity, applying an inward retraction force to the top pin, keeping the top pin contained within the cavity and guide hole, with its outer end face not protruding from the surface of the second reference block, thus avoiding interference when the guide rail is placed in the installation area.

[0058] When the guide plate of the drive assembly presses against the inner end of the top pin, the top pin overcomes the spring force and slides outward along the guide hole. Its outer end protrudes and presses against the side of the guide rail, achieving lateral clamping and positioning of the guide rail. When the drive assembly retracts and releases the pressure on the top pin, the spring force pushes the top pin to automatically retract and reset, returning it to its initial position, releasing the clamping force on the guide rail and facilitating disassembly and position adjustment. The guide hole provides precise sliding guidance for the top pin, and the limiting flange restricts the maximum ejection stroke of the top pin, preventing it from dislodging from the guide hole.

[0059] The driving component 99 includes a screw 98 rotatably disposed in the cavity 33, one end of which extends to the outside of the second reference block 32 and is provided with a knob.

[0060] Specifically, when the guide rail needs to be calibrated, tightened, loosened, or disassembled, the operator rotates the knob on the outside of the second reference block. The knob drives the screw inside the cavity to rotate synchronously. The screw and the moving seat form a helical transmission, converting the rotational motion into linear displacement of the moving seat along the length of the second reference block, thereby driving all the drive components on the moving seat to move synchronously.

[0061] When the knob is rotated forward, the moving seat moves towards the pin assembly, and the drive component acts on the pin assembly in sequence, causing the pin to push outward synchronously, completing the lateral clamping and calibration of the guide rail; when the knob is rotated in the reverse direction, the moving seat retracts backward, the drive component releases the pressure on the pin assembly, and the pin assembly automatically retracts under the action of the spring, releasing the lateral constraint on the guide rail, which facilitates the adjustment or disassembly of the guide rail position.

[0062] The screw drive has a self-locking characteristic. After calibration, it can maintain the position of the moving seat by itself without the need for an additional locking structure, ensuring long-term stability of the tightened state.

[0063] The foregoing has shown and described the basic principles and main features of the present invention, as well as its advantages. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A front-mounted tool magazine type drilling and tapping machine, characterized in that, include: Bed frame (1); The workbench motion system (2) is mounted on the bed (1) and includes a saddle (3), a workbench (4), a first guide drive assembly (5), and a second guide drive assembly (6). The saddle (3) is slidably mounted on the bed (1) via the first guide drive assembly (5) and can move along a first horizontal direction. The workbench (4) is slidably mounted on the saddle (3) via the second guide drive assembly (6) and can move along a second horizontal direction intersecting the first horizontal direction. A five-axis rotary table (7) is set on the worktable (4) to clamp the workpiece and drive the workpiece to swing. The column body (8) is connected to the bed (1) and is located on the rear side of the worktable motion system (2). On its front side and above the worktable motion system (2), there is a spindle guide area (9) extending in the vertical direction. Tool magazine mounting parts (10) are provided on both sides of the spindle guide area (9). The tool magazine bracket (11) includes a first cantilever (12) and a second cantilever (13) extending in the front-back direction and arranged opposite to each other. The rear ends of the first cantilever (12) and the second cantilever (13) are respectively connected to the two tool magazine mounting parts (10). The front ends of the first cantilever (12) and the second cantilever (13) are connected by a front connecting beam (14). The first cantilever (12), the second cantilever (13) and the front connecting beam (14) form a first clearance space (16). The first clearance space (16) and the spindle guide area (9) are arranged opposite to each other in the front-back direction so that the two are combined to form a clearance area for the installation and movement of the machine tool spindle. The spindle motion system (17) can be set within the clearance area; A front-mounted tool magazine (18) is connected to the front connecting beam (14).

2. The front-mounted tool magazine type drilling and tapping machine according to claim 1, characterized in that: The first guide drive assembly (5) includes two parallel first linear guide rails (19) and a first feed assembly located between the two first linear guide rails (19); wherein, the first feed assembly includes a first drive motor (20), a first lead screw (21) and a first nut (22), the first drive motor (20) drives the first lead screw (21) to rotate, and the first nut (22) is threadedly fitted on the first lead screw (21) and connected to the saddle (3) to drive the saddle (3) to reciprocate along the Y direction.

3. The front-mounted tool magazine type drilling and tapping machine according to claim 1, characterized in that: The second guide drive assembly (6) includes two parallel second linear guide rails (23) and a second feed assembly located between the two second linear guide rails (23); wherein, the second feed assembly includes a second drive motor (24), a second lead screw (25) and a second nut (26), the second drive motor (24) drives the second lead screw (25) to rotate, and the second nut (26) is threadedly fitted on the second lead screw (25) and connected to the worktable (4) to drive the worktable (4) to reciprocate along the X direction.

4. A front-mounted tool magazine type drilling and tapping machine according to claim 1, characterized in that: The tool magazine mounting part (10) has a mounting surface (27) that extends longitudinally and is perpendicular to the horizontal plane. A number of first mounting holes are arranged at intervals on the mounting surface (27). The inner sides of the first cantilever (12) and the second cantilever (13) are respectively parallel to each other and abut against the mounting surface (27). A transverse elongated hole (29) is provided on the first cantilever (12) and the second cantilever (13) respectively corresponding to the position of the first mounting hole. A bolt that can be threaded and fastened to the first mounting hole is inserted into the transverse elongated hole (29). A stabilizing groove (30) is recessed in the mounting surface (27) along the front-back direction. The inner sides of the first cantilever (12) and the second cantilever (13) are provided with flanges that can fit into the stabilizing groove (30).

5. A front-mounted tool magazine type drilling and tapping machine according to claim 2, characterized in that: It also includes calibration components, of which there are two, and each is respectively configured to correspond one-to-one with the first linear guide (19) and the second linear guide (23). Each calibration component includes a first reference block (31) and a second reference block (32) that are parallel to each other. A guide rail mounting area is formed between the first reference block (31) and the second reference block (32). The first linear guide (19) or the second linear guide (23) is mounted in the guide rail mounting area. The second reference block (32) has a cavity (33). A plurality of pin assemblies (34) are evenly distributed in the cavity (33) along the length direction of the second reference block (32). The plurality of pin assemblies (34) are movably inserted into the cavity (33). The cavity (33) is movably disposed on one side of the second reference block (32) facing the first reference block (31). A movable seat (35) is movably disposed in the cavity (33) along the length direction of the second reference block (32). A plurality of drive components (36) are distributed on the movable seat (35) along its length direction. The drive components (36) are correspondingly disposed with the pin components (34). The drive components (36) can drive the pin components (34) to move as the movable seat (35) moves, causing the pin components (34) to move and protrude outward to press against one side of the first linear guide (19) or the second linear guide (23). A drive member (99) is provided on the second reference block (32) to drive the movable seat (35) to move.

6. A front-mounted tool magazine type drilling and tapping machine according to claim 5, characterized in that: The drive assembly (36) includes a fixed plate (37), a guide plate (38), a movable plate (39), and an adjustment structure (40). The fixed plate (37) is fixedly mounted on the movable seat (35). The movable plate (39) is mounted on the movable seat (35) and can move relatively closer to or further away from the pin assembly (34). The guide plate (38) is inclined and hinged between the fixed plate (37) and the movable plate (39). The guide plate (38) can press against one end of the pin assembly one by one as the movable seat (35) moves. The adjustment structure (40) is mounted on the movable seat (35) to provide power to drive the movable plate (39) to move.

7. A front-mounted tool magazine type drilling and tapping machine according to claim 6, characterized in that: The adjustment structure (40) includes an adjustment screw (41) threaded into the movable seat (35), one end of which is fixed to a fixing block, which is rotatably connected to the movable plate (39) via a bearing.

8. A front-mounted tool magazine type drilling and tapping machine according to claim 5, characterized in that: The pin assembly includes a top pin (42) and a spring (43). Several guide holes (44) are arranged through the cavity (33) and on the side facing the first reference block (31) along its length. The top pin (42) is movably inserted into the guide hole (44) in a corresponding manner. A limiting flange is provided on the top pin (42) in the cavity (33). The spring (43) is sleeved on the top pin (42) and abuts against the limiting flange and the side wall of the cavity (33). The spring (43) keeps the top pin (42) in a movable tendency to be accommodated in the cavity (33).

9. A front-mounted tool magazine type drilling and tapping machine according to claim 5, characterized in that: The drive component (99) includes a screw (98) rotatably disposed in the cavity (33), one end of which extends to the outside of the second reference block (32) and is provided with a knob.

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