A tool changing structure for a drilling and tapping machining center

Abstract

This invention discloses a tool-cutting structure for a drilling and tapping machining center, relating to the technical field of machining center equipment. It includes a spindle box mounted on the machine tool column and an offset tool-cutting mechanism offset from the spindle box. The offset tool-cutting mechanism includes: an offset tool-cutting arm; an upper roller; a lower roller; a limiting post and a return spring; a weight-reducing groove; and a dual-drive mechanism. By incorporating an offset tool-cutting mechanism into the drilling and tapping machining center, the versatility of standard and offset tool magazine layouts is increased. When the tool magazine is installed at a large offset angle, there is no interference with the tool magazine, resulting in good versatility. With a large offset tool magazine layout, the spindle box does not need to be enlarged due to the offset of the tool-cutting component, saving materials while increasing the spindle box's movement speed and improving efficiency. The dual-drive design of the offset tool-cutting mechanism acts as a "safety lock," ensuring uninterrupted production and avoiding order delays and cost losses due to equipment downtime. Overall, it offers excellent performance.

Description

Technical Field

[0001] This invention relates to the field of machining center equipment technology, and in particular to a tool-cutting structure for a drilling and tapping machining center. Background Technology

[0002] In the structural design and layout of drilling and tapping machining centers, a mechanical tool-cutting component device needs to be designed. Conventional drilling and tapping machine tools typically employ a vertical design for the tool-cutting component (i.e.,...). Figure 1 (where α is 0°).

[0003] However, in the design of a compact spindle box, the vertical tool-changing component design often presents two problems: 1. When the tool magazine is offset, the angle of the tool magazine is limited. When the tool magazine angle is large, the tool-changing component will interfere with the tool magazine; 2. When the tool magazine is offset, the tool-changing component device also needs to be offset, which increases the size of the spindle box, increases the weight of the spindle box components, increases costs, and affects the movement speed of the spindle box components.

[0004] In view of this, there is a need in the market for a tooling structure for drilling and tapping machining centers that can avoid the above problems. Summary of the Invention

[0005] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, embodiments of the present invention provide a tool-cutting structure for a drilling and tapping machining center, which can solve the problems in the prior art where, when the tool magazine angle offset is large, the tool-cutting component interferes with the tool magazine, and when the tool magazine offset design is used, the tool-cutting component device also needs to be offset, which increases the size of the spindle box, increases the weight of the spindle box component, increases costs, and affects the movement speed of the spindle box component.

[0006] According to an embodiment of the present invention, a tool-cutting structure for a drilling and tapping machining center includes a spindle box mounted on a machine tool column, and an offset tool-cutting mechanism offset on the spindle box. The offset tool-cutting mechanism includes:

[0007] Offset cutter arm: Rotatably connected to the positioning seat surface of the spindle box;

[0008] Upper roller: Rotatably connected to the inner wall of the U-shaped mounting part at the upper end of the offset cutting arm;

[0009] Lower roller: Symmetrically rotates and is connected to the inner wall of the semi-circular mounting part at the lower end of the offset cutting arm;

[0010] Limiting pins and return springs are respectively disposed on the upper surface of the offset cutting arm;

[0011] Weight reduction grooves: respectively formed on the upper and lower surfaces of the offset cutter arm;

[0012] Dual drive mechanism: It is installed on the spindle box and is connected to the upper roller, the positioning seat and the return spring respectively.

[0013] According to the embodiment of the present invention, the tool-cutting structure for a drilling and tapping machining center includes a dual-drive mechanism comprising a cylinder mounting base, a slide frame, a bracket, and a drive frame. The cylinder mounting base is fixedly connected to the surface of the spindle box. A first cylinder and a second cylinder are fixedly connected to the top and bottom of the cylinder mounting base, respectively. The slide frame is vertically slidably connected to the bottom of the cylinder mounting base and connected to the output end of the second cylinder. A positioning seat and a bracket are respectively disposed on the surface of the slide frame. A translation seat is horizontally slidably connected to the top of the bracket. The output end of the first cylinder passes through the interior of the translation seat and is symmetrically fixedly connected to a convex shaft. One end of the convex shaft is located inside a groove formed on the surface of the translation seat and is slidably connected to the inner wall of the groove. The drive frame is fixedly connected to one end surface of the translation seat and sleeved on the outer side of the connecting seat on the surface of the bracket. An upper roller is located inside the drive frame and is slidably connected to the conical extrusion part surface of the inner wall of the drive frame. One end of a return spring is fixedly connected to the surface of the connecting seat.

[0014] According to the drilling and tapping machining center cutting tool structure provided in the embodiment of the present invention, the bottom end of the inclined groove is disposed on the side of the translation seat near the drive frame, and the top end of the inclined groove is disposed on the side of the translation seat away from the drive frame.

[0015] According to the drilling and tapping machining center cutting tool structure provided in the embodiment of the present invention, a limit rod and a limit groove are respectively provided at the position corresponding to the bottom of the cylinder mounting seat and the position corresponding to the bottom of the sliding seat and the top of the bracket. The limit rod is located in the limit groove and is slidably connected to the inner wall of the limit groove.

[0016] According to the drilling and tapping machining center cutting tool structure provided in the embodiment of the present invention, the bottom of both ends of the drive frame are integrally formed with a left stop and a right stop, and a flat part is provided at the end of the tapered extrusion part near the left stop.

[0017] According to the drilling and tapping machining center cutting tool structure provided in the embodiment of the present invention, a strip groove is provided on the surface of the right stop corresponding to the position of the connecting seat, the connecting seat is located in the strip groove and is connected to one end of the return spring.

[0018] According to the embodiment of the present invention, the tool-cutting structure for a drilling and tapping machining center has an installation angle of the offset tool-cutting mechanism set between 0° and 90°.

[0019] The tool-cutting structure for drilling and tapping machining centers provided in the embodiments of the present invention has at least the following beneficial effects:

[0020] By incorporating an offset tool-setting mechanism into the drilling and tapping machining center, the versatility of both standard and offset tool magazine layouts is increased. Even with a large-angle offset tool magazine installation, there is no interference with the tool magazine itself, demonstrating excellent versatility. Furthermore, with a large-angle offset tool magazine layout, the spindle box does not require increased dimensions due to the offset of the tool-setting component, saving materials while simultaneously increasing spindle box movement speed and improving efficiency. More importantly, the offset tool-setting mechanism features a dual-drive design that acts as a "safety lock." During normal operation, the two drives work together to ensure precise and efficient tool-setting actions. If one drive suddenly fails, the other can quickly take over, ensuring uninterrupted production and avoiding order delays and cost losses due to equipment downtime. This design significantly reduces waiting time for repairs, leading to a sharp increase in production efficiency and overall excellent performance.

[0021] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of the cutting tool for the drilling and tapping machining center provided in the embodiments of this application;

[0024] Figure 2 This is a schematic diagram of the spindle box structure in the tool-changing structure for a drilling and tapping machining center provided in the embodiments of this application;

[0025] Figure 3 This is a schematic diagram of the offset cutting mechanism in the cutting tool structure of the drilling and tapping machining center provided in the embodiments of this application;

[0026] Figure 4 This is a schematic diagram of the dual-drive mechanism in the tool-changing structure of the drilling and tapping machining center provided in the embodiments of this application;

[0027] Figure 5 This is a schematic diagram of the flat part structure in the tool-changing structure for a drilling and tapping machining center provided in the embodiments of this application;

[0028] Figure 6 This is a schematic diagram of the machine tool column structure in the tool-cutting structure of the drilling and tapping machining center provided in the embodiments of this application.

[0029] Figure Labels

[0030] 1. Machine tool column; 2. Spindle box; 21. Positioning seat; 3. Offset tool removal mechanism; 31. Offset tool removal arm; 32. Upper roller; 33. Lower roller; 34. Limiting post; 35. Return spring; 36. Weight reduction groove; 311. U-shaped mounting part; 312. Semi-arc mounting part; 4. Dual drive mechanism;

[0031] 41. Cylinder mounting seat; 42. First cylinder; 43. Second cylinder; 44. Lower slide; 45. Bracket; 46. Translation seat; 47. Protruding shaft; 48. Inclined groove; 49. Drive frame; 410. Connecting seat; 411. Conical extrusion section; 4101. Limiting rod; 491. Left stop; 492. Right stop; 4110. Horizontal section; 493. Strip groove;

[0032] 100. Base; 200. Tool magazine bracket; 300. Tool magazine. Detailed Implementation

[0033] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0034] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, left, right, front, back, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0035] In the description of this invention, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0036] In the description of this invention, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of these terms in this invention in conjunction with the specific content of the technical solution.

[0037] refer to Figures 1 to 6 This invention provides a tool-cutting structure for a drilling and tapping machining center, including a spindle box 2 mounted on a machine tool column 1, and an offset tool-cutting mechanism 3 offsetly mounted on the spindle box 2. The offset tool-cutting mechanism 3 includes:

[0038] Offset tool arm 31: Rotatably connected to the surface of the positioning seat 21 of the spindle box 2;

[0039] Upper roller 32: Rotatably connected to the inner wall of the U-shaped mounting part 311 at the upper end of the offset cutting arm 31;

[0040] Lower roller 33: Symmetrically rotates and is connected to the inner wall of the semi-circular mounting part 312 at the lower end of the offset cutting arm 31;

[0041] Limiting post 34 and return spring 35: respectively set on the upper surface of the offset cutting arm 31;

[0042] Weight reduction grooves 36 are respectively formed on the upper and lower surfaces of the offset cutter arm 31;

[0043] Dual drive mechanism 4: It is set on the spindle box 2 and is connected to the upper roller 32, the positioning seat 21 and the return spring 35 respectively.

[0044] It should be noted that the upper roller 32 described in this embodiment is located in the mounting groove (not shown in the figure) on the piston surface in the spindle. The downward movement of the upper roller 32 can synchronously drive the piston downward, so that the tool can be installed or removed.

[0045] It should be understood that by setting the offset tool-setting mechanism 3 at an offset angle in the drilling and tapping machining center, the versatility of the standard tool magazine and the offset tool magazine layout is increased. When the tool magazine is installed at a large offset angle, there will be no interference with the tool magazine, resulting in good versatility. When the tool magazine is installed at a large offset angle, the spindle box 2 does not need to be increased in size due to the offset of the tool-setting component, saving materials and increasing the moving speed of the spindle box 2, thus improving efficiency. More importantly, the dual-drive design of the offset tool-setting mechanism 3 can be called a "safety lock". During normal operation, the two drives work together to ensure accurate and efficient tool-setting action. If one drive suddenly fails, the other can quickly "take over", ensuring uninterrupted production and avoiding order delays and cost losses caused by equipment downtime. This design greatly shortens the waiting time for maintenance, allowing production efficiency to rise sharply, and the overall use effect is good.

[0046] In use, the machine tool column 1 is mounted on the base 100, the tool magazine bracket 200 is mounted on the machine tool column 1, the tool magazine 300 is mounted on the tool magazine bracket 200, and the spindle box 2 is mounted on the tool magazine bracket 200. During equipment operation, the first cylinder 42 and the second cylinder 43 of the dual drive mechanism 4 respectively undertake the key drive tasks, ensuring smooth tool installation and removal operations, and have redundancy protection functions. When the operator needs to perform a tool change operation, the first cylinder 42 is activated first. When the first cylinder 42 is in operation, its air circulation generates driving force, pushing the cam shaft 47 to slide upward along the inner wall of the inclined groove 48. During this process, the translation seat 46 is squeezed by the cam shaft 47 and moves synchronously to the left, thereby driving the drive frame 49 and the conical extrusion part 411 to move in linkage. The conical extrusion part 411 squeezes the upper roller 32 downward, causing the offset cutting arm 31 to rotate counterclockwise around the positioning seat 21, synchronously stretching the return spring 35 and driving the lower roller 33 to move downward. The lower roller 33 pushes the spindle piston downward, allowing the tool to be installed. The tool is either installed or removed, and then the tool magazine completes the tool retrieval action. When the cam 47 reaches the end of the inclined groove 48, the limiting post 34 abuts against the inner wall of the spindle box 2 to achieve precise positioning. When the first cylinder 42 resets, all components reset under the action of mechanical linkage and the elastic force of the reset spring 35, and the tool is fixed accordingly. If the second cylinder 43 is activated, it directly drives the slide frame 44 to move down, driving the positioning seat 21, the offset tool arm 31, the bracket 45, the translation seat 46, the drive frame 49, and the conical extrusion part 411 to move down as a whole. When the offset cutting arm 31 moves down, it pushes the spindle piston down through the lower roller 33, which can also allow the tool to be installed or removed. This, together with the tool magazine, completes the entire tool changing action. After the second cylinder 43 is reset, all components return to their positions synchronously, and the tool is then fixed. The design highlight of the dual drive mechanism 4 is that when either the first cylinder 42 or the second cylinder 43 is damaged, the other cylinder can still independently drive the tool changing process, avoiding equipment downtime for maintenance, significantly improving production efficiency and equipment stability, and demonstrating excellent performance.

[0047] According to the embodiment of the present invention, the tool-cutting structure for a drilling and tapping machining center includes a dual-drive mechanism 4 comprising a cylinder mounting base 41, a slide frame 44, a bracket 45, and a drive frame 49. The cylinder mounting base 41 is fixedly connected to the surface of the spindle box 2. A first cylinder 42 and a second cylinder 43 are fixedly connected to the top and bottom of the cylinder mounting base 41, respectively. The slide frame 44 is vertically slidably connected to the bottom of the cylinder mounting base 41 and connected to the output end of the second cylinder 43. The positioning seat 21 and the bracket 45 are respectively disposed on the surface of the slide frame 44. The top of the bracket 45 slides horizontally. The translation seat 46 is dynamically connected. The output end of the first cylinder 42 passes through the interior of the translation seat 46 and is symmetrically fixedly connected to the convex shaft 47. One end of the convex shaft 47 is located inside the inclined groove 48 opened on the surface of the translation seat 46 and is slidably connected to the inner wall of the inclined groove 48. The drive frame 49 is fixedly connected to one end surface of the translation seat 46 and sleeved on the outside of the connecting seat 410 on the surface of the bracket 45. The upper roller 32 is located inside the drive frame 49 and is slidably connected to the surface of the conical extrusion part 411 on the inner wall of the drive frame 49. One end of the return spring 35 is fixedly connected to the surface of the connecting seat 410.

[0048] It should be noted that the cylinder mounting base 41 described in this embodiment is provided with an air inlet end. One end of the air inlet end is connected to an external air pipe, and the other end of the air inlet end is connected to the first cylinder 42 and the second cylinder 43 respectively. A solenoid valve is provided on the air inlet end. The solenoid valve is connected to the PLC controller through a bus system to realize data transmission and control command reception.

[0049] It should be understood that when the first cylinder 42 is activated, its air circulation generates driving force, pushing the cam shaft 47 to slide upward along the inner wall of the inclined groove 48. During this process, the translation seat 46 is squeezed by the cam shaft 47 and moves to the left in sync, thereby driving the drive frame 49 and the conical extrusion part 411 to move in linkage. The conical extrusion part 411 squeezes the upper roller 32 downward, causing the offset cutting arm 31 to rotate counterclockwise around the positioning seat 21, simultaneously stretching the return spring 35 and driving the lower roller 33 to move downward. The lower roller 33 pushes the spindle piston downward, allowing the tool to be installed or removed. When the cam shaft 47 reaches the end of the inclined groove 48, the limiting post... 34 is pressed against the inner wall of the spindle box 2 to achieve precise positioning. When the first cylinder 42 is reset, all components are reset under the action of mechanical linkage and the elastic force of the reset spring 35, and the tool is fixed accordingly. If the second cylinder 43 is activated, it directly drives the slide frame 44 to move down, driving the positioning seat 21, the offset cutting arm 31, the bracket 45, the translation seat 46, the drive frame 49 and the conical extrusion part 411 to move down as a whole. When the offset cutting arm 31 moves down, it pushes the spindle piston down through the lower roller 33, which can also allow the tool to be installed or removed. After the second cylinder 43 is reset, all components return to their positions synchronously, and the tool is fixed accordingly.

[0050] According to the embodiment of the present invention, the bottom end of the inclined groove 48 is disposed on the side of the translation seat 46 near the drive frame 49, and the top end of the inclined groove 48 is disposed on the side of the translation seat 46 away from the drive frame 49.

[0051] It should be understood that further limiting the installation direction of the inclined groove 48 allows the first cylinder 42 to operate so that the cam shaft and the inclined groove 48 work together to make the translation seat 46 move only to the side of the upper roller 32, thereby squeezing the upper roller 32 to move downward, resulting in a better performance.

[0052] According to the drilling and tapping machining center cutting tool structure provided in the embodiment of the present invention, a limiting rod 4101 and a limiting groove are respectively provided at the bottom of the cylinder mounting seat 41 corresponding to the surface of the slide frame 44 and at the bottom of the sliding seat 46 corresponding to the top of the bracket 45. The limiting rod 4101 is located in the limiting groove and is slidably connected to the inner wall of the limiting groove.

[0053] In this embodiment, both the limiting rod 4101 and the limiting groove have trapezoidal cross-sections.

[0054] It should be understood that by setting the limiting rod 4101 and the limiting groove, the sliding frame 44 can be moved vertically in a stable manner and the translation seat 46 can be moved horizontally in a stable manner, which significantly improves the positional accuracy and structural stability, and has a good effect in use.

[0055] According to the embodiment of the present invention, the bottom of the two ends of the drive frame 49 are integrally formed with a left stop 491 and a right stop 492, and the tapered extrusion part 411 is provided with a flat part 4110 at one end near the left stop 491.

[0056] In this embodiment, the bottom of the left stop 491 is higher than the bottom of the right stop 492.

[0057] It should be understood that the left stop 491 and the right stop 492 are set to limit the stroke of the upper roller 32 to ensure its stable operation, and the flat part 4110 is set to limit the initial position of the upper roller 32 to improve the position accuracy and achieve good results.

[0058] According to the drilling and tapping machining center cutting tool structure provided in the embodiment of the present invention, a strip groove 493 is provided on the surface of the right stop 492 corresponding to the position of the connecting seat 410. The connecting seat 410 is located in the strip groove 493 and is connected to one end of the return spring 35.

[0059] It should be understood that by opening the strip groove 493, it is easy to quickly connect one end of the return spring 35 to the surface of the connecting seat 410, thereby improving installation efficiency and ease of operation, and resulting in good performance.

[0060] According to the embodiment of the present invention, the tool-cutting structure for a drilling and tapping machining center has an installation angle of the offset tool-cutting mechanism set between 0° and 90°.

[0061] Reference Figure 1 The offset cutting mechanism 3 of this device can be installed vertically or offset. The specific installation angle of the offset cutting mechanism 3 is set between 0° and 90°, that is, the angle in Figure α is -90° to +90°.

[0062] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A tool-changing structure for a drilling and tapping machining center, comprising a spindle box mounted on a machine tool column, characterized in that, It also includes an offset tool-cutting mechanism offset on the spindle box, the offset tool-cutting mechanism comprising: Offset cutter arm: Rotatably connected to the positioning seat surface of the spindle box; Upper roller: Rotatably connected to the inner wall of the U-shaped mounting part at the upper end of the offset cutting arm; Lower roller: Symmetrically rotates and is connected to the inner wall of the semi-circular mounting part at the lower end of the offset cutting arm; Limiting pins and return springs are respectively disposed on the upper surface of the offset cutting arm; Weight reduction grooves: respectively formed on the upper and lower surfaces of the offset cutter arm; Dual drive mechanism: It is installed on the spindle box and is connected to the upper roller, the positioning seat and the return spring respectively.

2. The tool-cutting structure for a drilling and tapping machining center according to claim 1, characterized in that, The dual-drive mechanism includes a cylinder mounting base, a slide frame, a bracket, and a drive frame. The cylinder mounting base is fixedly connected to the surface of the spindle box. A first cylinder and a second cylinder are fixedly connected to the top and bottom of the cylinder mounting base, respectively. The slide frame is vertically slidably connected to the bottom of the cylinder mounting base and connected to the output end of the second cylinder. A positioning seat and a bracket are respectively set on the surface of the slide frame. A translation seat is horizontally slidably connected to the top of the bracket. The output end of the first cylinder passes through the interior of the translation seat and is symmetrically fixedly connected to a convex shaft. One end of the convex shaft is located inside a groove on the surface of the translation seat and is slidably connected to the inner wall of the groove. The drive frame is fixedly connected to one end of the surface of the translation seat and is sleeved on the outside of the connecting seat on the surface of the bracket. The upper roller is located inside the drive frame and is slidably connected to the conical extrusion part surface of the inner wall of the drive frame. One end of the return spring is fixedly connected to the surface of the connecting seat.

3. The tool-cutting structure for a drilling and tapping machining center according to claim 2, characterized in that, The bottom end of the inclined groove is located on the side of the translation seat near the drive frame, and the top end of the inclined groove is located on the side of the translation seat away from the drive frame.

4. The tool-cutting structure for a drilling and tapping machining center according to claim 2, characterized in that, Limiting rods and limiting grooves are respectively provided at the bottom of the cylinder mounting seat corresponding to the position on the surface of the slide frame and at the bottom of the sliding seat corresponding to the position on the top of the bracket. The limiting rods are located in the limiting grooves and are slidably connected to the inner wall of the limiting grooves.

5. The tool-cutting structure for a drilling and tapping machining center according to claim 2, characterized in that, The bottom of both ends of the drive frame are integrally formed with a left stop and a right stop, and the tapered extrusion part is provided with a flat part at the end near the left stop.

6. The tool-cutting structure for a drilling and tapping machining center according to claim 5, characterized in that, A strip groove is provided on the surface of the right stop corresponding to the position of the connecting seat. The connecting seat is located in the strip groove and is connected to one end of the return spring.

7. The tool-cutting structure for a drilling and tapping machining center according to claim 1, characterized in that, The installation angle of the offset cutting mechanism is set between 0° and 90°.

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