Plate automatic drilling, tapping and counter bore machining center

Abstract

The invention relates to an automatic drilling, tapping and counter bore machining center for plates, which is provided with a lathe bed, a moving platform, a cross beam and a floating support mechanism, a workbench and a servo spindle head positioned above the workbench are arranged on the lathe bed, and the moving platform is mounted on the lathe bed and is supported by a sliding system led to the moving platform to move; the movable platform is connected with the workbench and transversely extends, and the movable platform can conduct longitudinal feeding relative to the workbench. The cross beam is mounted on the lathe bed and synchronously and longitudinally moves together with the movable platform; a straight row tool magazine is arranged on the cross beam; the floating supporting mechanism is installed on the lathe bed and located below the workbench, and the floating supporting mechanism supports the lower side of the plate so as to assist the servo spindle head to press the machined plate downwards. According to the combined machining device, plates of different sizes can be conveniently and rapidly clamped and positioned, and the combined machining of full-automatic drilling, tapping and countersinking of the plates is achieved; the labor intensity of workers is reduced, the machining efficiency is improved, and the problems of dislocation and leakage holes in secondary machining of sheet metal parts are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of sheet metal part processing equipment, especially the equipment for drilling, tapping and counterboring of sheets in the sheet metal industry. Background Art

[0002] At present, most sheet metal parts need secondary processing such as drilling, tapping and counterboring after being blanked by a CNC turret punch press or a laser cutting machine. Generally, equipment such as electric drills, bench drills and tapping machines are used for secondary processing. During processing, operators usually manually hold the workpieces for positioning and processing, which has low efficiency, high labor intensity, high labor costs and is prone to missing holes and processing misalignment. Especially when processing large-sized workpieces, it is difficult to position, which is likely to cause deformation and misalignment of the sheets and pose a high potential safety hazard to the operators. Summary of the Invention

[0003] The purpose of the present invention is to provide an automatic drilling, tapping and counterboring processing center for sheets, which can conveniently and quickly clamp and position sheets of different sizes, especially large-sized sheets, and realize the composite processing of automatic drilling, tapping and counterboring of sheets; reduce the labor intensity of workers, improve the processing efficiency, and eliminate the problems of misalignment and missing holes in the secondary processing of sheet metal parts.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions: An automatic drilling, tapping and counterboring processing center for sheets, which has: A bed body, on which a workbench and a servo spindle head located above the workbench are provided; the workbench is used to support the sheet to be processed, and the servo spindle head carries a processing tool to press down on the sheet for processing; and A moving platform, which is installed on the bed body and supported by a sliding system that guides the movement of the moving platform; the moving platform is arranged on the side of the workbench and extends horizontally in connection with the workbench, and the moving platform can feed longitudinally relative to the workbench; A cross beam, which is installed on the bed body and moves longitudinally synchronously with the moving platform. A linear tool magazine is provided on the cross beam, which extends horizontally relative to the workbench. The linear tool magazine is higher than the moving platform in the position height of the three-dimensional space. At the same time, the linear tool magazine can move horizontally relative to the cross beam, and the linear tool magazine provides processing tools for the servo spindle head; A floating support mechanism, which is installed on the bed body and located below the workbench. The floating support mechanism has a supporting die that can move up and down. The supporting die supports the lower side of the sheet upward through an avoidance hole preset at a corresponding position of the workbench to assist the servo spindle head in pressing down on the sheet for processing.

[0005] Further, the sliding system includes a slide base and a first motor screw structure. The slide base is installed on the bed body through linear slide rails, and the first motor screw structure is positioned on the bed body and pulls the slide base to move back and forth longitudinally.

[0006] Further, in the above solution, the bed body is composed of a main spindle bed body and a feeding bed body in a combined structure. The workbench straddles the main spindle bed body and the feeding bed body, while the servo main spindle head and the floating support mechanism are installed on the main spindle bed body, and the moving platform, the sliding system and the cross beam are installed on the feeding bed body.

[0007] Further, in the above solution, the cross beam is fixed on the slide base, and a cross slide is provided on the cross beam. The cross slide carries a linear tool magazine and moves horizontally relative to the cross beam.

[0008] Further, in the above solution, a clamp is also assembled on the cross slide. The clamp is used to clamp the plate for relative horizontal movement or longitudinal movement following the moving platform.

[0009] Further, in the above solution, the floating support mechanism further includes a mounting bracket and a servo electric cylinder. The mounting bracket is fixedly connected to the main spindle bed body. The servo electric cylinder is installed on the mounting bracket and has a first supporting rod that can protrude from the upper end of the mounting bracket. Two supporting molds are arranged at intervals on the upper end of the mounting bracket. The two supporting molds match the first supporting rod by automatically switching positions, so that the servo electric cylinder drives the first supporting rod to extend upward, and then the first supporting rod jacks up the corresponding supporting mold, enabling the supporting mold to establish a posture of supporting and bearing, and realizing the support of the lower side of the plate.

[0010] Further, in the above solution, the cross section of the cross slide is L-shaped. The cross slide abuts against the upper side and the front side of the cross beam, and the cross slide is connected to the cross beam through linear guide rails. A second motor screw rod structure is also provided on the upper side of the cross beam. The second motor screw rod structure drives the cross slide to move back and forth horizontally; the linear tool magazine is arranged on the front side of the cross slide.

[0011] Further, in the above solution, the floating support mechanism is arranged at one end of the main spindle bed body close to the feeding bed body, and the floating support mechanism and the servo main spindle head are in a vertically opposite relationship; the two supporting molds are installed together on a switching pallet. The switching pallet is installed on the mounting bracket and is supported by linear guide rails guiding the movement of the switching pallet. The switching pallet is driven by a cylinder to drive the two supporting molds to switch positions.

[0012] Further, in the above solution, the supporting mold is in the form of a shaft rod. The supporting mold includes a main body section, a mold head and a second supporting rod respectively distributed at the upper and lower ends of the main body section. The mold head is used to contact and support the plate, and the second supporting rod is embedded in an oil-free bushing. The oil-free bushing is installed on the switching pallet, and the second supporting rod is used for axial butt joint connection with the first supporting rod.

[0013] Further, in the above solution, the moving platform extends symmetrically on the left and right sides of the workbench, and positioning members are provided on the moving platform. The positioning members position the plate by abutting against the plate.

[0014] The present invention has the following advantages compared with the prior art: 1. A mobile platform is designed to increase the bearing surface and enable mobile feeding, realizing automatic positioning and conveying of large plate workpieces, and reducing the labor intensity of workers.

[0015] 2. A linear tool magazine is designed and effectively integrated into the motion system of the mobile platform, automatically providing various machining tools, and enabling machining such as drilling, tapping, and counterboring of plates on the same machine tool, improving work efficiency.

[0016] 3. A floating support mechanism is designed to support plates of different thicknesses, keeping the distance between the plate and the machining tool stable during plate machining, ensuring that the depths of drilling, tapping, and counterboring are consistent with the set values; completely solving the problems of plate deformation and uncontrollable machining depth during drilling and tapping, especially during counterboring machining, where the counterboring machining depth can be accurately controlled to meet the high-precision machining requirements of a drilling and tapping machining center.

[0017] 4. The structure is simple and practical, with low investment cost, realizing precise secondary positioning of the plate, and eliminating problems such as misalignment and missing holes in secondary machining of the plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Attached Figure 1 is a schematic structural diagram of a preferred embodiment of the present invention; Attached Figure 2 is Figure 1 an enlarged schematic diagram of a partial structure of the embodiment; Attached Figure 3 is Figure 1 a schematic diagram of the installation structure of the mobile platform of the embodiment; Attached Figure 4 is Figure 3 an enlarged schematic diagram of a partial structure of the embodiment; Attached Figure 5 is Figure 1 a schematic diagram of the crossbeam structure of the embodiment; Attached Figure 6 is Figure 5 an enlarged schematic diagram of a partial structure of the embodiment; Attached Figure 7 is Figure 1 a schematic diagram of the bed structure of the embodiment; Attached Figure 8 is Figure 1 a schematic diagram of the floating support mechanism of the embodiment; Attached Figure 9 is Figure 8 a side view structural diagram of the floating support mechanism. DETAILED DESCRIPTION OF THE INVENTION

[0019] The following will further illustrate the concept, specific structure and technical effects of the invention in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of the present invention.

[0020] It should be noted that in the description of the present invention, the terms indicating directions or positional relationships such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the accompanying drawings. This is only for convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0021] Referring to Figures 1 - 9 As shown, it is a schematic diagram of a preferred embodiment of the present invention. The present invention relates to an automatic drilling, tapping and counterboring processing center for plates, belonging to the field of numerically controlled equipment for sheet metal automatic processing. It is used for fully automatic drilling, tapping and counterboring composite processing of plates, reducing labor intensity, improving efficiency, and eliminating problems such as missing holes and processing misalignment in sheet metal part processing. The automatic drilling, tapping and counterboring processing equipment for plates includes: a bed body 1, a moving platform 2, a cross beam 3, a floating support mechanism 5 and a corresponding control system. A workbench 11 and a servo spindle head 12 located above the workbench are provided on the bed body 1. The bed body 1 of this embodiment is composed of a spindle bed body 13 and a feeding bed body 14 combined longitudinally before and after. The spindle bed body 13 is a C-shaped structure with a longitudinal concave part. The C-shaped opening of the spindle bed body 13 faces the feeding bed body 14. The workbench 11 is in the form of a flat plate. One end of the workbench 11 extends into the longitudinal concave part of the spindle bed body 13, and the other end is erected on the feeding bed body 14, realizing that the workbench 11 straddles the spindle bed body 13 and the feeding bed body 14 to form a relatively fixed whole. At the same time, there is a clearance between the lower side of the workbench 11 and the feeding bed body 14 to facilitate the installation and implementation of other subsequent components. The bed body 1 is divided into two parts, the spindle bed body 13 and the feeding bed body 14, which is convenient for processing, with smaller processing deformation, higher precision, lower processing cost, and perfectly solves the equipment transportation problem. When in use, the spindle bed body 13 and the feeding bed body 14 can be assembled together to improve the flexibility of the equipment. The workbench 11 is used to support the plate to be processed. The servo spindle head 12 is installed on the spindle bed body 13 and is vertically arranged at the C-shaped opening of the spindle bed body 13. The servo spindle head 12 carries the processing tool and presses down to process the plate.

[0022] The mobile platform 2 is installed on the bed body 1 and supported by a sliding system that guides the movement of the mobile platform. The sliding system of this embodiment includes a sliding seat 61 and a first motor screw structure 62. The sliding seat 61 is installed on the feeding bed body 14 through linear slide rails. The first motor screw structure 62 is positioned on the bed body 1 and pulls the sliding seat 61 to reciprocate longitudinally. The mobile platform 2 lies flat on the sliding seat 61, and the mobile platform 2 is arranged on the side of the workbench 11 and connects with the workbench for lateral extension. The mobile platform 2 can feed longitudinally relative to the workbench; by increasing the bearing surface of the mobile platform 2 and being able to move for feeding, automatic positioning and conveying of large sheet metal workpieces are realized, reducing the labor intensity of workers. In this embodiment, the sliding seat 61 is in a horizontal U shape and is installed on the feeding bed body 14 through symmetric linear slide rails, and the sliding seat 61 moves under the workbench 11. The first motor screw structure 62 is also exactly hidden under the workbench 11 and installed on the feeding bed body 14. The first motor screw structure 62 drives the sliding seat 61 to reciprocate by a pushing and pulling method. The mobile platform 2 extends symmetrically on the left and right sides of the workbench 11, increasing the bearing area, and the structure is stable and reliable; a positioning member 21 is provided on the mobile platform 2, and the positioning member positions the sheet metal by abutting against it. Figure 4 As shown in Figure 4 , the positioning member 21 includes a mounting seat and a positioning cylinder. The mounting seat is installed on the mobile platform 2, and the positioning cylinder is installed on the mounting seat. By the rising of the piston rod of the positioning cylinder and protruding onto the mobile platform 2, it is used for abutting against the sheet metal, so as to realize the rapid positioning of the sheet metal. There can be one or more positioning members 21, which can be distributed according to actual needs to match the positioning work of sheet metals of different sizes. Steps can also be appropriately provided on the corresponding edges of the mobile platform 2 for cooperating with positioning and other work.

[0023] The cross beam 3 is installed on the bed body 1 and moves longitudinally synchronously with the mobile platform 2. The cross beam 3 of this embodiment is also installed on the feeding bed body 14 and is located behind the mobile platform 2. A linear tool magazine 4 is provided on the cross beam 3. The linear tool magazine 4 extends laterally relative to the workbench, and the position height of the linear tool magazine 4 in three-dimensional space is higher than that of the mobile platform 2. At the same time, the linear tool magazine 4 can move laterally relative to the cross beam 3, so that the linear tool magazine 4 can provide processing tools for the servo spindle head 12, meeting different processing needs and realizing the composite processing of automatic drilling, tapping, and counterboring of sheet metals.

[0024] The floating support mechanism 5 is installed on the machine bed 1 and is located below the workbench. The floating support mechanism 5 has a supporting die 51 that can move up and down. The supporting die 51 supports the lower side of the plate upward through an avoidance hole 111 preset at a corresponding position of the workbench, so as to assist the servo spindle head 12 to press down and process the plate, thereby ensuring that the plate does not deform. The floating support mechanism 5 is suitable for supporting plates of different thicknesses, making the distance between the plate and the processing tool stable during plate processing, ensuring that the depths of drilling, tapping, and counterboring are consistent with the set values; completely solving the problems of plate deformation during drilling and tapping and uncontrollable processing depth, especially during counterboring processing, the depth of counterboring processing can be accurately controlled to meet the high-precision processing of the drilling and tapping machining center.

[0025] Figure 1 , 5 As shown in FIGS. 5 and 6, the cross beam 3 of this embodiment is fixed on the slide base 61, and a cross slide 31 is provided on the cross beam 3. The cross slide 31 carries the linear tool magazine 4 and moves horizontally relative to the cross beam 3. A clamp 32 is also assembled on the cross slide 31. The clamp 32 is used to clamp the plate for relative horizontal movement or longitudinal movement following the moving platform 2. The clamp 32 includes an upper clamp body, a lower clamp body, a clamping cylinder, and a pin shaft. The clamping cylinder is fixedly installed on the upper clamp body. The lower clamp body is connected to the upper clamp body through a pin shaft, and the piston of the clamping cylinder is connected to the lower clamp body. The clamping and loosening of the clamp are realized by the expansion and contraction of the clamping cylinder. The clamp is installed on the cross slide, and the horizontal movement of the plate clamped by the clamp is realized through the movement of the cross slide. The cross section of the cross slide 31 is L-shaped. The cross slide 31 abuts against the upper side and the front side of the cross beam 3, and the cross slide 31 is connected to the cross beam 3 through a linear guide rail. A second motor screw structure 33 is also provided on the upper side of the cross beam 3. The second motor screw structure 33 drives the cross slide 31 to move horizontally back and forth. The linear tool magazine 4 is arranged on the front side surface of the cross slide 31. There are two clamps 32, which are respectively distributed at both ends of the linear tool magazine 4, with a compact structure and a small size.

[0026] Figure 2 , 8 As shown in FIGS. 8 and 9, the floating support mechanism 5 further includes a mounting bracket 52 and a servo electric cylinder 53. The mounting bracket 52 is fixedly connected to the main spindle bed 13. The servo electric cylinder 53 is installed on the mounting bracket 52 and has a first supporting rod 531 that can protrude from the upper end of the mounting bracket; two supporting dies 51 are arranged at intervals on the upper end of the mounting bracket. The two supporting dies 51 automatically switch positions to match the first supporting rod 531, so that the servo electric cylinder 53 drives the first supporting rod 531 to protrude upward. Then, the first supporting rod 531 jacks up the corresponding supporting die 51, enabling the supporting die 51 to establish a supporting and bearing posture to support the lower side of the plate. The switching support of the two supporting dies 51 is to meet the drilling and tapping hole diameters of different sizes.

[0027] The floating support mechanism 5 is arranged at one end of the main spindle bed 13 close to the feeding bed 14, and the floating support mechanism 5 and the servo spindle head 12 are in a vertically opposite relationship; the two supporting dies 51 are installed on the switching pallet 54 together, and the switching pallet 54 is installed on the mounting bracket 52 and supported by a linear guide rail 57 for guiding the movement of the switching pallet. The switching pallet is driven by a switching cylinder 55 to drive the switching pallet 54 to drive the two supporting dies 51 to switch positions. The supporting die 51 is in the form of a shaft rod. The supporting die 51 includes a main body section 511, a die head 512 and a second supporting rod 513 respectively distributed at the upper and lower ends of the main body section. The die head 512 is used to contact and support the sheet material. While satisfying the support, the die head 512 can also meet the processing requirements of drilling and tapping; the second supporting rod 513 is embedded in an oil-free bushing 56, and the oil-free bushing 56 is installed on the switching pallet. The second supporting rod 513 is used for axially butt-joint connection with the first supporting rod 531, so that the first supporting rod 531 jacks up the second supporting rod 513 in the oil-free bushing 56, so as to correspondingly lift the supporting die 51 to support the sheet material.

[0028] The structure of the present invention is simple and practical, with a small size and low investment cost. The moving platform increases the bearing surface and can move the material, realizing the automatic positioning and conveying of large sheet metal workpieces, and reducing the labor intensity of workers. The linear tool magazine is effectively integrated into the motion system of the moving platform, and various processing tools are provided adaptively, and it can realize processing such as drilling, tapping and counterboring of the sheet material on the same machine, improving work efficiency. The introduction of the floating support mechanism realizes the matching support of sheets with different thicknesses, makes the distance between the sheet material and the processing tool stable during processing, and ensures that the depths of drilling, tapping and counterboring are consistent with the set values; it completely solves the problems of sheet material deformation and uncontrollable processing depth during drilling and tapping. Especially during counterboring processing, the depth of counterboring processing can be accurately controlled, meeting the high-precision processing requirements of the drilling and tapping machining center. Multiple processes on one machine improve processing efficiency and eliminate the problems of misalignment and missing holes in the secondary processing of sheet metal parts.

[0029] Although the preferred specific embodiments of the present invention have been described above in conjunction with the drawings, the present invention should not be limited to the structure and operation exactly the same as the above description and drawings. For those skilled in the art of this technology, many equivalent improvements and changes can be made to the above embodiments through logical analysis, reasoning or limited experiments without exceeding the concept and scope of the present invention. However, these improvements and changes should all belong to the scope protected by the present invention.

Claims

1. Automatic drilling, tapping and counterboring machining center for sheet materials, characterized in that, Comprising: A bed body (1) provided with a workbench (11) and a servo spindle head (12) above the workbench; the workbench (11) is used to support the plate to be processed, and the servo spindle head (12) carries a processing tool to press down on the plate for processing; and A moving platform (2), which is installed on the bed body (1) and supported by a sliding system guiding the movement of the moving platform; the moving platform (2) is arranged on the side of the workbench (11) and is connected to the workbench for lateral extension, and the moving platform (2) can feed longitudinally relative to the workbench; A cross beam (3), which is installed on the bed body (1) and moves longitudinally synchronously with the moving platform (2), and a linear tool magazine (4) is provided on the cross beam (3), the linear tool magazine (4) extends laterally relative to the workbench, and the position height of the linear tool magazine (4) in the three-dimensional space is higher than that of the moving platform (2), and at the same time, the linear tool magazine (4) can move laterally relative to the cross beam (3), and the linear tool magazine (4) provides processing tools for the servo spindle head (12); A floating support mechanism (5), which is installed on the bed body (1) and located below the workbench, and the floating support mechanism (5) has a supporting die (51) that can move up and down, and the supporting die (51) supports the lower side of the plate upward through an avoidance hole (111) preset at the corresponding position of the workbench to assist the servo spindle head (12) in pressing down on the plate for processing.

2. The automatic drilling, tapping and counterboring machining center for sheet materials according to claim 1, wherein, The sliding system includes a sliding seat (61) and a first motor screw structure (62), the sliding seat (61) is installed on the bed body (1) through a linear slide rail, and the first motor screw structure (62) is positioned on the bed body (1) and pulls the sliding seat (61) to move back and forth longitudinally.

3. The automatic drilling, tapping and counterboring machining center for sheet materials according to claim 1 or 2, characterized in that, The bed body (1) is composed of a spindle bed body (13) and a feeding bed body (14) in combination, the workbench (11) straddles the spindle bed body (13) and the feeding bed body (14), the servo spindle head (12) and the floating support mechanism (5) are installed on the spindle bed body (13), and the moving platform (2), the sliding system and the cross beam (3) are installed on the feeding bed body (14).

4. The automatic drilling, tapping and counterboring machining center for sheet materials according to claim 3, wherein The cross beam (3) is fixed on the sliding seat (61), and a carriage (31) is provided on the cross beam (3), and the carriage (31) carries the linear tool magazine (4) to move laterally relative to the cross beam (3).

5. The automatic drilling, tapping and counterboring machining center for sheet materials according to claim 4, characterized in that A clamp (32) is also assembled on the carriage (31), and the clamp (32) is used to clamp the plate for relative lateral movement or longitudinal movement following the moving platform (2).

6. The automatic drilling, tapping and counterboring machining center for sheet materials according to claim 3, wherein The floating support mechanism (5) further includes a mounting bracket (52) and a servo electric cylinder (53). The mounting bracket (52) is fixedly connected to the main spindle bed (13). The servo electric cylinder (53) is mounted on the mounting bracket (52) and has a first jacking rod (531) that can protrude from the upper end of the mounting bracket. Two jacking dies (51) are arranged at intervals on the upper end of the mounting bracket. The two jacking dies (51) match the first jacking rod (531) by automatically switching positions, so that the servo electric cylinder (53) drives the first jacking rod (531) to extend upward. Then, the first jacking rod (531) jacks up the corresponding jacking die (51), enabling the jacking die (51) to establish a support and bearing posture to support the lower side of the sheet material.

7. The automatic drilling, tapping and counterboring machining center for sheet materials according to claim 4, wherein The cross-section of the carriage (31) is L-shaped. The carriage (31) abuts against the upper side and the front side of the cross beam (3), and the carriage (31) is connected to the cross beam (3) through linear guides. A second motor screw structure (33) is also provided on the upper side of the cross beam (3), and the second motor screw structure (33) drives the carriage (31) to move horizontally back and forth. The linear tool magazine (4) is arranged on the front side surface of the carriage (31).

8. The automatic drilling, tapping and counterboring machining center for sheet materials according to claim 6, wherein, The floating support mechanism (5) is arranged at one end of the main spindle bed (13) close to the feeding bed (14), and the floating support mechanism (5) is in an up-and-down relative relationship with the servo spindle head (12). The two jacking dies (51) are jointly mounted on a switching pallet (54). The switching pallet (54) is mounted on the mounting bracket (52) and supported by linear guides that guide the movement of the switching pallet. The switching pallet is driven by a cylinder (55) to drive the two jacking dies (51) to switch positions.

9. The automatic drilling, tapping and counterboring machining center for sheet materials according to claim 8, wherein, The jacking die (51) is in the form of a shaft rod. The jacking die (51) includes a main body section (511), a die head (512) and a second jacking rod (513) respectively distributed at the upper and lower ends of the main body section. The die head (512) is used to contact and jack the sheet material, while the second jacking rod (513) is fitted in an oil-free bushing (56). The oil-free bushing (56) is mounted on the switching pallet, and the second jacking rod (513) is used for axially docking and connecting with the first jacking rod (531).

10. The automatic drilling, tapping and counterboring machining center for sheet materials according to claim 3, wherein The moving platform (2) symmetrically extends on the left and right sides of the workbench (11), and positioning members (21) are provided on the moving platform (2). The positioning members position the sheet material by abutting against it.

Images