Numerical control plane drilling machine

Abstract

The utility model relates to the technical field of machine tools, in particular to a numerical control plane drilling machine which comprises a machine tool body and a working table, the working table comprises a mounting plate and a dovetail groove plate, four L-shaped sliding blocks are annularly arrayed on the mounting plate, and the four sliding blocks are driven by a driving device to synchronously move oppositely or oppositely; positioning plates are slidably mounted on the horizontal portions of the sliding blocks, ejector rods are arranged at the ends, opposite to each other, of the positioning plates, and the ejector rods are slidably connected with crow bars rotationally mounted on the vertical portions of the sliding blocks. During use, a workpiece is placed on the dovetail groove plate, the four sliding blocks are driven to get close to each other through the driving device, when the positioning plate abuts against the side wall of the workpiece, the positioning plate moves backwards to abut against the embedded frame to move in the straight groove so as to abut against the crow bar to deflect, and when the pressing end of the crow bar abuts against the surface of the workpiece, the crow bar and the positioning plate cannot continue to move to clamp the workpiece. Therefore, centering, positioning and clamping of the workpiece are completed, practicability is high, centering, positioning and clamping are conducted firstly, the preliminary positioning step of the drill bit is simplified, and operation is easier and more convenient.

Description

Technical Field

[0001] This utility model relates to the field of machine tool technology, and in particular to a CNC planar drilling machine. Background Technology

[0002] A drilling machine is a machine tool mainly used to machine holes in workpieces. A CNC drilling machine is a hole-making machine tool that is digitally controlled and mainly used for drilling. By inputting drilling data into the control system (computer control system), the machine tool can start automatically and operate according to the set requirements. Compared with the manual type, it has higher efficiency and machining accuracy.

[0003] When using a CNC machine tool, the first step in operation is to determine the starting point, i.e., positioning. In most cases, drilling machines are multi-axis linked, moving and calibrating synchronously through feed components, spindles, etc. This is positioning. Positioning adjusts the spindle and other drive components according to the set data, driving the worktable and drill bit to move until the corresponding drilling position. The overall operation and control is relatively complicated. Moreover, the workpiece is usually positioned and tightened on the worktable using fasteners such as bolts or clamps. If it is not secure, it will affect the overall correction and positioning function of the drilling machine, resulting in inaccurate positioning and affecting the stability of the drilling. If shaking occurs during drilling, accidents such as drill bit chipping (breakage and splashing) can easily occur.

[0004] Therefore, this utility model provides a CNC planar drilling machine to improve the workpiece positioning accuracy of the drilling machine's worktable. Utility Model Content

[0005] The purpose of this utility model is to solve the problems existing in the prior art by proposing a CNC planar drilling machine.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A CNC planar drilling machine includes a bed, on which are provided two columns and a feed assembly located between the two columns. The feed assembly drives a worktable. A drill spindle box is provided on the columns. The worktable includes a mounting plate driven by the feed assembly and a dovetail groove plate fastened to the mounting plate. Four L-shaped sliders are arranged in a circular array on the mounting plate. The sliders slide with the mounting plate. The four sliders are driven by a drive device to move synchronously relative to each other or in opposite directions.

[0008] Positioning plates are slidably mounted on the horizontal parts of three sliders, and springs are provided between the positioning plates and the sliders. Each of the four positioning plates has a push rod at one of its opposite ends, and the push rod is slidably connected to a pry bar. The pry bar is rotatably mounted on the upper part of the vertical part of the slider. A wedge block is vertically slidably mounted on the vertical part of the other slider, and a top spring is provided between the wedge block and the corresponding slider.

[0009] Preferably, the driving device includes a groove on the upper end of the mounting plate, in which a first gear and a second gear are rotatably mounted. The first gear is driven by a motor fixed on the bottom wall of the mounting plate. A vortex slide rail is provided on the end face of the second gear. The bottom wall of the horizontal part of the four sliders is provided with a slide groove that slides in cooperation with the vortex slide rail.

[0010] Preferably, the upper end of the dovetail groove plate has a ring array of notches that correspond one-to-one with the sliders.

[0011] Preferably, the gap between the upper end face of the first gear and the bottom wall of the corresponding side slider is set.

[0012] Preferably, the upper end face of the dovetail groove plate is located between the top and bottom ends of the wedge-shaped block.

[0013] Preferably, the top rod has a square-shaped frame at its end, and the pry bar has a straight groove, with the frame embedded in the straight groove.

[0014] Preferably, the upper end of the vertical part of the slider that cooperates with the wedge block is provided with an open vertical groove, and the wedge block is slidably installed in the vertical groove.

[0015] Compared with the prior art, this utility model provides a CNC planar drilling machine, which has the following beneficial effects:

[0016] 1. In use, place the workpiece on the dovetail groove plate, start the motor, the motor drives the first gear to rotate, the first gear drives the second gear to rotate, and through the scroll rail, the four sliders move closer together. When the positioning plate abuts against the side wall of the workpiece, the positioning plate moves towards the vertical part of the slider, the spring is compressed, and the positioning plate moves backward, which will move against the insert frame in the straight groove through the push rod, thereby resisting the pry bar to deflect. When the pressing end of the pry bar abuts against the surface of the workpiece, the pry bar no longer deflects, and the positioning plate also cannot move. At this time, the centering, positioning and clamping of the workpiece is completed. It is convenient and quick. It is not only highly practical, but also simplifies the initial positioning steps of the drill bit by centering, positioning and clamping first, making the operation more convenient.

[0017] 2. One of the sliders is vertically mounted with a wedge block. When placing a workpiece, the workpiece is placed on the dovetail groove plate, and the wedge block can retract without interfering with the pushing of the workpiece. When the workpiece is separated from the wedge block, the wedge block returns to its original position. When the four sliders move relative to each other, the positioning plates on the other three sliders and the vertical surface of the wedge block move against the workpiece towards the center, without affecting the positioning and clamping function, and making it more convenient to place the workpiece.

[0018] Other advantages, objectives and features of this invention will be set forth in part in the description which follows; and in part will be apparent to those skilled in the art upon examination of the following description; or may be taught from practice of this invention. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the CNC drilling machine of this utility model.

[0020] Figure 2 This is a three-dimensional schematic diagram of the workbench of this utility model.

[0021] Figure 3 This is a three-dimensional schematic diagram of the mounting plate of this utility model.

[0022] Figure 4 For the present utility model Figure 3 A partial schematic diagram of point A.

[0023] Figure 5 For the present utility model Figure 3 A plan view.

[0024] Figure 6 For the present utility model Figure 3 Top view.

[0025] In the diagram: 1. Bed; 2. Worktable; 3. First gear; 4. Second gear; 5. Scroll slide rail; 6. Slider; 7. Positioning plate; 8. Embedded frame; 9. Pry bar; 10. Straight groove; 11. Wedge block; 12. Notch; 201. Mounting plate; 202. Dovetail groove plate. Detailed Implementation

[0026] The following will refer to the appendix in the embodiments of this utility model. Figure 1-6 The technical solutions in the embodiments of this utility model will be clearly and completely described. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0027] Example 1: To address the problems existing in the prior art, this example provides a CNC planar drilling machine, including a bed 1. The bed 1 is provided with two columns and a feed assembly located between the two columns. The columns are provided with a horizontally movable drill spindle box, and the spindle box is provided with a vertically movable drill bit and corresponding accessories. The feed assembly includes a lead screw mounted on the bed 1 and a support block threaded with the lead screw. The support block is slidably connected to the bed 1, and a worktable 2 is fastened to the upper end of the support block by fasteners, so that the worktable 2 can move back and forth on the bed 1.

[0028] The workbench 2 includes a mounting plate 201 and a dovetail groove plate 202 fastened to the mounting plate 201. The mounting plate 201 and the dovetail groove plate 202 are also fastened together by fasteners. The upper end face of the mounting plate 201 is provided with a groove, in which a first gear 3 and a second gear 4 are rotatably mounted. The first gear 3 and the second gear 4 mesh with each other. The first gear 3 is driven by a motor fixed to the bottom wall of the mounting plate 201. The end face of the second gear 4 is provided with a scroll rail 5. The upper end face of the mounting plate 201 has four L-shaped sliders 6 arranged in a ring. The sliders 6 slide with the mounting plate 201. The upper end of the dovetail groove plate 202 has notches 12 arranged in a ring, corresponding one-to-one with the sliders 6. The bottom wall of the horizontal part of the slider 6 is provided with a groove that cooperates with the scroll rail 5, so that the slider 6 and the scroll rail 5 slide together. Positioning plates 7 are slidably installed on the horizontal parts of the four sliders 6, and springs are provided between the positioning plates 7 and the sliders 6. A pry bar 9 is rotatably installed on the upper part of the vertical part of the slider 6. One end of the pry bar 9 facing the center of the mounting plate 201 is a pressing end, and the other end is provided with a straight groove 10. A U-shaped frame 8 is embedded in the straight groove 10. A top rod is fixed on the frame 8, and the top rod is fixedly connected to the positioning plate 7 on the corresponding slider 6.

[0029] The specific usage process of this embodiment is as follows:

[0030] In use, the workpiece is placed on the dovetail groove plate 202, the motor is started, the motor drives the first gear 3 to rotate, the first gear 3 drives the second gear 4 to rotate, and through the scroll rail 5, the four sliders 6 move closer together. When the positioning plate 7 is against the side wall of the workpiece, the positioning plate 7 moves closer to the vertical part of the slider 6, the spring is compressed, and the positioning plate 7 moves backward and moves in the straight groove 10 against the insert frame 8 through the push rod, thereby resisting the pry bar 9 to deflect. When the pressing end of the pry bar 9 is against the surface of the workpiece, the pry bar 9 no longer deflects, and the positioning plate 7 also cannot move. At this time, the centering and positioning of the workpiece is completed, which is convenient and quick.

[0031] In this embodiment, the bottom wall of the horizontal part of the slider 6 is provided with a notch, so that there is a gap between the upper end face of the first gear 3 and the bottom wall of the corresponding side slider 6, which avoids interference between the movement of the slider 6 and the rotation of the first gear 3 and ensures the stability of the transmission.

[0032] In Example 2, since each of the four sliders 6 is equipped with a top rod, the workpiece can only be lifted and suspended in mid-air to avoid the four pry bars 9 when placing it, which makes workpiece placement inconvenient. Therefore, in this example, one of the sliders 6 does not have a positioning plate 7 or pry bars 9, etc. Instead, the upper part of the vertical section of this slider 6 has an open vertical groove, in which a wedge block 11 is vertically slidably installed. The wedge-shaped surface of the wedge block 11 faces away from the center of the dovetail groove plate 202, and a top spring is provided between the wedge block 11 and the vertical groove. Thus, when placing a workpiece, the workpiece is placed on the dovetail groove plate 202, and the workpiece presses against the wedge block 11, causing the wedge block 11 to retract into the vertical groove, pushing the workpiece. The workpiece separates from the wedge block 11, and the wedge block 11 returns to its original position under the action of the top spring. When the four sliders 6 move relative to each other, the positioning plates 7 on the other three sliders 6 and the vertical surfaces of the wedge blocks 11 move towards the center against the workpiece, making workpiece placement more convenient.

[0033] In this embodiment, the top of the vertical part of the slider 6 corresponding to the wedge block 11 is located below the upper surface of the dovetail groove plate 202 to avoid interference with the pushing of the workpiece. The upper surface of the dovetail groove plate 202 is located between the top and bottom of the wedge surface of the wedge block 11, so that the wedge block 11 will not cause interference when pushing the workpiece, and the wedge block 11 can contact the side wall of the workpiece after resetting.

[0034] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0035] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0036] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A CNC planar drilling machine, comprising a bed (1), a double column and a feed assembly located between the double column on the bed (1), the feed assembly driving a worktable (2), and a drill spindle box on the column, characterized in that, The worktable (2) includes a mounting plate (201) driven by a feed assembly and a dovetail groove plate (202) fastened to the mounting plate (201). The mounting plate (201) has four L-shaped sliders (6) arranged in a ring. The sliders (6) slide with the mounting plate (201). The four sliders (6) are driven by a drive device to move synchronously relative to each other or in opposite directions. Positioning plates (7) are slidably installed on the horizontal parts of three sliders (6). A spring is provided between the positioning plate (7) and the slider (6). A top rod is provided at the opposite end of each of the four positioning plates (7). A pry bar (9) is slidably connected to the top rod. The pry bar (9) is rotatably installed on the upper end of the vertical part of the slider (6). A wedge block (11) is slidably installed on the vertical part of another slider (6). A top spring is provided between the wedge block (11) and the corresponding slider (6).

2. The CNC planar drilling machine according to claim 1, characterized in that, The driving device includes a groove on the upper end of the mounting plate (201), in which a first gear (3) and a second gear (4) are rotatably mounted. The first gear (3) is driven by a motor fixed on the bottom wall of the mounting plate (201). The end face of the second gear (4) is provided with a vortex slide rail (5). The bottom wall of the horizontal part of the four sliders (6) is provided with a slide groove that slides in cooperation with the vortex slide rail (5).

3. The CNC planar drilling machine according to claim 1, characterized in that, The upper end of the dovetail groove plate (202) has a ring array of notches (12) that correspond one-to-one with the slider (6).

4. The CNC planar drilling machine according to claim 2, characterized in that, The gap between the upper end face of the first gear (3) and the bottom wall of the corresponding side slider (6) is set.

5. The CNC planar drilling machine according to claim 1, characterized in that, The upper end face of the dovetail groove plate (202) is located between the top and bottom ends of the wedge surface of the wedge block (11).

6. The CNC planar drilling machine according to claim 1, characterized in that, The top rod has a square-shaped inset frame (8) at its end, and the pry bar (9) has a straight groove (10) on its side, with the inset frame (8) embedded in the straight groove (10).

7. The CNC planar drilling machine according to claim 4, characterized in that, The upper end of the vertical part of the slider (6) that cooperates with the wedge block (11) is provided with an open vertical groove, and the wedge block (11) is slidably installed in the vertical groove.

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