Gantry machining center with Z-axis detection function

Abstract

The utility model relates to the technical field of gantry machining centers, in particular to a gantry machining center with a Z-axis detection function, which comprises a base, a frame, a worktable, X-axis power mechanisms, Y-axis power mechanisms, Z-axis power mechanisms, a gantry, a workpiece clamping mechanism and a Z-axis detection mechanism. A portal frame is arranged above the X-axis power mechanism, a workbench is arranged below the portal frame, the workbench is located in the frame body, a workpiece clamping mechanism and a Z-axis detection mechanism are arranged on the workbench, a Y-axis power mechanism and a Z-axis power mechanism are assembled on the portal frame, a milling cutter is assembled at the bottom of the Z-axis power mechanism, and a milling cutter is assembled at the bottom of the Y-axis power mechanism. A detector of the Z-axis detection mechanism senses and judges the mechanical coordinates of the current position of the milling cutter, if the deviation value is within the set range, the mechanical part of the machining center is normal, and otherwise, the equipment stops and gives an alarm. The quality problem of batch workpieces caused by mechanical faults of the machining center can be effectively avoided, and property loss caused by quality accidents is avoided for enterprises.

Description

Technical Field

[0001] This utility model relates to the technical field of gantry machining centers, and in particular to a gantry machining center with Z-axis detection function. Background Technology

[0002] Gantry machining centers are milling machines with a gantry frame and a horizontal long bed. The Z-axis of the spindle is set perpendicular to the worktable. They are suitable for machining large workpieces on planes and inclined surfaces in batch and mass production. They have high machining accuracy and production efficiency. However, existing gantry machining centers do not have Z-axis mechanical fault detection functions. Once the machine tool coordinate axis is damaged (for example, the coupling is loose or the lead screw is worn too much), it will cause the products to be out of tolerance and scrapped. In automated production lines, batch quality accidents will occur, causing serious losses to enterprises. Utility Model Content

[0003] To address the problems existing in the prior art, this utility model provides a gantry machining center with Z-axis detection function. By pre-detecting the Z-axis mechanical coordinates, quality problems caused by mechanical failures in the machining center can be effectively avoided.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A gantry machining center with Z-axis detection function includes a base, a frame, a worktable, an X-axis power mechanism, a Y-axis power mechanism, a Z-axis power mechanism, a gantry frame, a workpiece clamping mechanism, and a Z-axis detection mechanism. The base has a frame in the middle, with X-axis power mechanisms mounted on both sides. A gantry frame is mounted above the X-axis power mechanisms, and a worktable is mounted below the gantry frame. The worktable is located within the frame and has the workpiece clamping mechanism and Z-axis detection mechanism mounted on it. The Y-axis and Z-axis power mechanisms are mounted on the gantry frame. A milling cutter is mounted at the bottom of the Z-axis power mechanism, and the Z-axis detection mechanism measures the mechanical coordinates of the milling cutter. The Z-axis detection mechanism includes a detection base, a support column, reinforcing ribs, a connecting block, and a detector. The detection base is fixedly connected to the worktable, and its upper end is connected to the support column. The reinforcing ribs are located around the support column and connected to the detection base. The connecting block is located at the top of the support column and has a detector mounted on it.

[0006] The detector in the aforementioned gantry machining center with Z-axis detection function is a contact sensor.

[0007] The aforementioned gantry machining center with Z-axis detection function further includes an exhaust fan, an air collection pipe, and an exhaust pipe. The air collection pipe is connected end to end and arranged around the detector. The exhaust fan is fixed on the worktable, and its air outlet is connected to the air collection pipe through a pipeline. The upper end of the air collection pipe has multiple exhaust holes, and the exhaust holes are connected to the exhaust pipe by threads.

[0008] The aforementioned gantry machining center with Z-axis detection function includes a workpiece clamping mechanism comprising a clamping base, a first clamping plate, a clamping motor, and a second clamping plate. One end of the clamping base is fixedly connected to the worktable, and the other end is connected to the first clamping plate. A clamping motor is mounted on one side of the first clamping plate, and the output end of the clamping motor is connected to the second clamping plate, thereby driving the second clamping plate to rotate.

[0009] In the aforementioned gantry machining center with Z-axis detection function, the first clamping plate and the second clamping plate are both equipped with T-shaped clamping heads at the ends away from the clamping motor. The horizontal support arm of the T-shaped clamping head is used to clamp the workpiece, and the vertical support arm is connected to the first clamping plate or the second clamping plate by bolts.

[0010] The aforementioned gantry machining center with Z-axis detection function includes an X-axis power mechanism comprising X-axis guide rails and an X-axis lead screw arranged parallel to each other on both sides of the base. A gantry frame is mounted on the X-axis guide rails, and the gantry frame is connected to the X-axis lead screw via a slider. An X-axis motor is mounted on one end of the X-axis lead screw, and the X-axis motor drives the gantry frame and its components to move along the X-axis guide rails.

[0011] The aforementioned gantry machining center with Z-axis detection function includes a Y-axis power mechanism comprising two horizontal Y-axis guide rails mounted on the gantry beam. Y-axis slides are mounted on the two Y-axis guide rails, and the Y-axis slides are threadedly connected to a Y-axis lead screw. The Y-axis lead screw is positioned between the two Y-axis guide rails, with a Y-axis motor mounted at one end. The Y-axis motor drives the Y-axis slides and its components to move horizontally along the Y-axis guide rails.

[0012] The aforementioned gantry machining center with Z-axis detection function includes a Z-axis power mechanism comprising two vertical Z-axis guide rails mounted on a Y-axis slide. Z-axis slides are mounted on the two Z-axis guide rails and are threadedly connected to a Z-axis lead screw. The Z-axis lead screw is positioned between the two Z-axis guide rails, with a Z-axis motor mounted at one end. The Z-axis motor drives the Z-axis slide and its components to move up and down along the Z-axis guide rails. A milling cutter is mounted at the bottom of the Z-axis slide.

[0013] The beneficial effects of adopting the above technical solution are as follows:

[0014] This invention uses an X-axis motor to move the gantry and its components along the X-axis guide rail, and a Y-axis motor to move the Y-axis slide and its components horizontally along the Y-axis guide rail. Then, a Z-axis motor moves the milling cutter downwards above the detector. The detector of the Z-axis detection mechanism senses and determines the mechanical coordinate deviation value of the current position. If the deviation value is within a set range, it indicates that the machining center's mechanical components are normal, and the equipment will then perform the milling operation. The Z-axis detection mechanism also includes an exhaust fan and an exhaust duct. The exhaust fan, connected to the exhaust duct, provides positive pressure airflow around the detector, which can prevent milling operations from being interrupted. Debris generated during workpiece milling falls onto the detector, affecting the detection results. Furthermore, the workpiece clamping mechanism of this invention not only fixes the workpiece, preventing displacement during milling, but also positions the workpiece to avoid milling misalignment due to inconsistent workpiece positions. T-shaped clamping heads are provided on the first and second clamping plates, with the vertical support arms of the T-shaped clamping heads bolted to either the first or second clamping plate. Adjusting the bolts changes the distance between the two T-shaped clamping heads, thus enabling the workpiece clamping mechanism to accommodate workpieces of varying thicknesses.

[0015] This invention, by probing the Z-axis before milling the workpiece, can effectively prevent batch workpieces from having quality problems due to mechanical failures in machining centers, thus avoiding property losses for enterprises caused by quality accidents. Attached Figure Description

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model (not drawn to scale);

[0018] Figure 2 This is a schematic diagram of the workpiece clamping mechanism of this utility model (not drawn to scale);

[0019] Figure 3 This is a partial cross-sectional schematic diagram of the Z-axis detection mechanism of this utility model (not drawn to scale).

[0020] In the diagram: 1. Base; 2. Frame; 3. Worktable; 4. X-axis power mechanism; 41. X-axis guide rail; 42. X-axis lead screw; 43. X-axis motor; 5. Y-axis power mechanism; 51. Y-axis guide rail; 52. Y-axis slide; 53. Y-axis lead screw; 54. Y-axis motor; 6. Z-axis power mechanism; 61. Z-axis guide rail; 62. Z-axis slide; 63. Z-axis lead screw; 64. Z-axis motor; 65. Milling cutter; 7. Gantry frame; 8. Workpiece clamping mechanism; 81. Clamping base; 82. First clamping plate; 83. Clamping motor; 84. Second clamping plate; 85. T-shaped clamping head; 9. Z-axis detection mechanism; 91. Detection base; 92. Support column; 93. Reinforcing rib plate; 94. Connecting block; 95. Detector; 96. Exhaust fan; 97. Air collection duct; 98. Exhaust duct. Detailed Implementation

[0021] like Figure 1-3 As shown, this utility model includes a base 1, a frame 2, a worktable 3, an X-axis power mechanism 4, a Y-axis power mechanism 5, a Z-axis power mechanism 6, a gantry frame 7, a workpiece clamping mechanism 8, and a Z-axis detection mechanism 9. The base 1 has a frame 2 in the middle, with X-axis power mechanisms 4 mounted on both sides. A gantry frame 7 is located above the X-axis power mechanisms 4, and a worktable 3 is located below the gantry frame 7. The worktable 3 is located inside the frame 2 and has the workpiece clamping mechanism 8 and the Z-axis detection mechanism 9 mounted on it. The X-axis power mechanism 4 drives the gantry frame 7 to move above the workpiece clamping mechanism 8 and the Z-axis detection mechanism 9. The gantry frame 7 is equipped with a Y-axis power mechanism 5 and a Z-axis power mechanism 6. A milling cutter 65 is mounted at the bottom of the Z-axis power mechanism 6. The mechanical coordinates of the milling cutter 65 are measured by a Z-axis detection mechanism 9. The Z-axis detection mechanism 9 includes a detection base 91, a support column 92, a reinforcing rib 93, a connecting block 94, and a detector 95. The detection base 91 is fixedly connected to the worktable 3, and its upper end is connected to the support column 92. The reinforcing rib 93 is located around the support column 92 and is connected to the detection base 91. The connecting block 94 is located at the top of the support column 92, and the detector 95 is mounted on it.

[0022] like Figure 3 As shown, the detector 95 is a contact sensor. The milling cutter 65 is driven to move downward above the contact sensor by the X-axis power mechanism 4, Y-axis power mechanism 5 and Z-axis power mechanism 6. After the contact sensor senses the movement, the milling cutter 65 stops descending and determines the mechanical coordinate deviation value of the current position. By setting upper and lower limits, if the deviation value exceeds the upper and lower limits, it indicates that there is a problem with the mechanical parts of the machining center. The equipment will stop and alarm, prompting the staff to check.

[0023] The Z-axis detection mechanism 9 of this utility model also includes an exhaust fan 96, an air collection pipe 97, and an exhaust pipe 98. The air collection pipe 97 is connected end to end, surrounds the detector 95, and is located inside the connecting block 94. The exhaust fan 96 is fixed on the worktable 3, and its air outlet is connected to the air collection pipe 97 through a pipe. The upper end of the air collection pipe 97 has multiple exhaust holes, which are connected to the exhaust pipe 98 by threads. The opening of the exhaust pipe 98 is located outside the connecting block 94. By connecting the exhaust fan 96 to the exhaust pipe 98, positive pressure air is supplied to the area around the detector 95, which can prevent debris generated during milling of the workpiece from falling on the detector 95 and thus affecting the detection results.

[0024] like Figure 2 As shown, the workpiece clamping mechanism 8 includes a clamping base 81, a first clamping plate 82, a clamping motor 83, and a second clamping plate 84. One end of the clamping base 81 is fixedly connected to the worktable 3, and the other end is connected to the first clamping plate 82. A clamping motor 83 is mounted on one side of the first clamping plate 82. The output end of the clamping motor 83 is connected to the second clamping plate 84. The clamping motor 83 drives the second clamping plate 84 to rotate. When the second clamping plate 84 rotates to a horizontal position, it cooperates with the first clamping plate 82 to fix the workpiece. There are multiple workpiece clamping mechanisms 8, which are arranged around the workpiece. They can not only fix the workpiece and prevent it from shifting during milling, but also position the workpiece to avoid milling misalignment due to different positions of the workpiece at the front and rear.

[0025] In addition, the first clamping plate 82 and the second clamping plate 84 of this utility model are both provided with T-shaped clamping heads 85 at the ends away from the clamping motor 83. The horizontal support arm of the T-shaped clamping head 85 is used to clamp the workpiece, and the vertical support arm is connected to the first clamping plate 82 or the second clamping plate 84 by bolts. The distance between the two T-shaped clamping heads 85 can be changed by adjusting the bolts, so that the workpiece clamping mechanism 8 can be used for workpieces of different thicknesses.

[0026] like Figure 1 As shown, the X-axis power mechanism 4 includes an X-axis guide rail 41 and an X-axis lead screw 42 arranged parallel to each other on both sides of the base 1. A gantry frame 7 is provided on the X-axis guide rail 41. The gantry frame 7 is connected to the X-axis lead screw 42 through a slider. An X-axis motor 43 is mounted on one end of the X-axis lead screw 42. The X-axis motor 43 drives the gantry frame 7 and its components to move along the X-axis guide rail 41.

[0027] The Y-axis power mechanism 5 includes two horizontal Y-axis guide rails 51 mounted on the crossbeam of the gantry frame 7. Y-axis slides 52 are provided on the two Y-axis guide rails 51. The Y-axis slides 52 are threadedly connected to the Y-axis lead screw 53. The Y-axis lead screw 53 is located between the two Y-axis guide rails 51, and a Y-axis motor 54 is mounted on one end of it. The Y-axis motor 54 drives the Y-axis slides 52 and its components to move horizontally along the Y-axis guide rails 51.

[0028] The Z-axis power mechanism 6 includes two vertical Z-axis guide rails 61 mounted on the Y-axis slide 52. Z-axis slides 62 are mounted on the two Z-axis guide rails 61. The Z-axis slides 62 are threadedly connected to the Z-axis lead screw 63. The Z-axis lead screw 63 is located between the two Z-axis guide rails 61, and a Z-axis motor 64 is mounted on one end of the lead screw 63. The Z-axis motor 64 drives the Z-axis slides 62 and its components to move up and down along the Z-axis guide rails 61. A milling cutter 65 is mounted on the bottom end of the Z-axis slides 62.

[0029] Work process:

[0030] 1. First, the X-axis motor 43 drives the gantry 7 to move to the side of the Z-axis detection mechanism 9. Then, the Y-axis motor 54 drives the Y-axis slide 52 and its components to move above the detector 95. Subsequently, the Z-axis motor 64 drives the milling cutter 65 to descend. After the detector 95 senses the position, the milling cutter 65 stops descending. The coordinate deviation of the current position is determined by the actual coordinate value of the detector 95 and the coordinate value of the system at this time. If the deviation is within the set range, the gantry 7 returns to the predetermined position and is ready to mill the workpiece.

[0031] 2. The workpiece is placed on the T-shaped clamping head of the first clamping plate 82 by a mechanical gripper. Then the clamping motor 83 drives the second clamping plate 84 to rotate. When the second clamping plate 84 rotates to the horizontal position, the two T-shaped clamping heads 85 respectively abut against the upper and lower ends of the workpiece, and the workpiece is fixed at this time.

[0032] 3. The X-axis motor 43 drives the gantry 7 to move to one side of the workpiece clamping mechanism 8. The workpiece surface is milled according to the system settings. The frame 2 set around the base 1 can prevent the workpiece milling chips from flying everywhere. The exhaust fan 96 and exhaust pipe 98 can also blow away the chips near the detector 95. After the milling is completed, the gantry 7 returns to the predetermined position. The clamping motor 83 drives the second clamping plate 84 to rotate, the workpiece is released from the fixation, and the mechanical gripper removes the workpiece to prepare for the processing of the next workpiece.

[0033] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this invention.

Claims

1. A gantry machining center with Z-axis detection function, characterized in that: The system includes a base (1), a frame (2), a worktable (3), an X-axis power mechanism (4), a Y-axis power mechanism (5), a Z-axis power mechanism (6), a gantry (7), a workpiece clamping mechanism (8), and a Z-axis detection mechanism (9). The base (1) has a frame (2) in the middle and X-axis power mechanisms (4) on both sides. A gantry (7) is located above the X-axis power mechanism (4), and a worktable (3) is located below the gantry (7). The worktable (3) is located inside the frame (2) and has a workpiece clamping mechanism (8) and a Z-axis detection mechanism (9) on it. The gantry (7) is equipped with a Y-axis power mechanism (5) and a Z-axis detection mechanism (9). The power mechanism (6) has a milling cutter (65) mounted at the bottom of the Z-axis power mechanism (6), and the mechanical coordinates of the milling cutter (65) are measured by the Z-axis detection mechanism (9). The Z-axis detection mechanism (9) includes a detection base (91), a support column (92), a reinforcing rib (93), a connecting block (94), and a detector (95). The detection base (91) is fixedly connected to the worktable (3), and its upper end is connected to the support column (92). The reinforcing rib (93) is located around the support column (92) and is connected to the detection base (91). The connecting block (94) is located at the top of the support column (92), and the detector (95) is mounted on it.

2. The gantry machining center with Z-axis detection function according to claim 1, characterized in that: The detector (95) is a contact sensor.

3. The gantry machining center with Z-axis detection function according to claim 1 or 2, characterized in that: The Z-axis detection mechanism (9) also includes an exhaust fan (96), an air collection pipe (97), and an exhaust pipe (98). The air collection pipe (97) is connected end to end and arranged around the detector (95). The exhaust fan (96) is fixed on the workbench (3), and its air outlet is connected to the air collection pipe (97) through a pipe. The upper end of the air collection pipe (97) is provided with multiple exhaust holes, and the exhaust holes are connected to the exhaust pipe (98) by threads.

4. The gantry machining center with Z-axis detection function according to claim 3, characterized in that: The workpiece clamping mechanism (8) includes a clamping base (81), a first clamping plate (82), a clamping motor (83), and a second clamping plate (84). One end of the clamping base (81) is fixedly connected to the worktable (3), and the other end is connected to the first clamping plate (82). The clamping motor (83) is mounted on one side of the first clamping plate (82). The output end of the clamping motor (83) is connected to the second clamping plate (84), and the clamping motor (83) drives the second clamping plate (84) to rotate.

5. The gantry machining center with Z-axis detection function according to claim 4, characterized in that: The first clamping plate (82) and the second clamping plate (84) are each provided with a T-shaped clamping head (85) at the end away from the clamping motor (83). The horizontal support arm of the T-shaped clamping head (85) is used to clamp the workpiece, and the vertical support arm is connected to the first clamping plate (82) or the second clamping plate (84) by bolts.

6. The gantry machining center with Z-axis detection function according to claim 5, characterized in that: The X-axis power mechanism (4) includes an X-axis guide rail (41) and an X-axis lead screw (42) arranged parallel to each other on both sides of the base (1). A gantry frame (7) is provided on the X-axis guide rail (41). The gantry frame (7) is connected to the X-axis lead screw (42) through a slider. An X-axis motor (43) is installed at one end of the X-axis lead screw (42). The X-axis motor (43) drives the gantry frame (7) and its components to move along the X-axis guide rail (41).

7. The gantry machining center with Z-axis detection function according to claim 6, characterized in that: The Y-axis power mechanism (5) includes two horizontal Y-axis guide rails (51) installed on the crossbeam of the gantry frame (7). Y-axis slides (52) are provided on the two Y-axis guide rails (51). The Y-axis slides (52) are threadedly connected to the Y-axis lead screw (53). The Y-axis lead screw (53) is located between the two Y-axis guide rails (51). One end of the lead screw is equipped with a Y-axis motor (54). The Y-axis motor (54) drives the Y-axis slides (52) and its components to move horizontally along the Y-axis guide rails (51).

8. The gantry machining center with Z-axis detection function according to claim 7, characterized in that: The Z-axis power mechanism (6) includes two vertical Z-axis guide rails (61) set on the Y-axis slide (52). Z-axis slides (62) are provided on the two Z-axis guide rails (61). The Z-axis slides (62) are threadedly connected to the Z-axis lead screw (63). The Z-axis lead screw (63) is set between the two Z-axis guide rails (61). One end of the lead screw is equipped with a Z-axis motor (64). The Z-axis motor (64) drives the Z-axis slides (62) and its components to move up and down along the Z-axis guide rails (61). A milling cutter (65) is installed at the bottom of the Z-axis slides (62).

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