Self-calibration device for flatness of a worktable of a numerical control machine tool

Abstract

The utility model discloses a numerical control machine tool workstation's flatness self -aligning device, including base, the top of base is installed machine tool main part, its characterized in that: the workstation is installed between base and machine tool main part, utilize the setting of workstation, inductive displacement sensor carries out monitoring to the flatness of placing plate, when the flatness of placing plate appears the inclination, corresponding inductive displacement sensor will data transmission in the inside of controller, and utilize controller to open servo motor and carry out normal rotation or reverse rotation, when servo motor normal rotation, a driven bevel gear work drives reciprocating screw rod and rotates, and another driven bevel gear carries out idling through the setting of one way bearing, conversely, when servo motor reverses, a driven bevel gear idles through the setting of one way bearing, and reciprocating screw rod rotates simultaneously, and movable wedge block moves on the surface of reciprocating screw rod, and cooperates with fixed wedge block, and the one side of placing plate is jacked up.

Description

Technical Field

[0001] This utility model relates to the field of CNC machine tool technology, specifically to a flatness self-calibration device for a CNC machine tool worktable. Background Technology

[0002] CNC machine tools occupy a crucial position in modern manufacturing, and their machining accuracy directly affects the quality and performance of products. As one of the key components of a CNC machine tool, the flatness of the worktable has a significant impact on the machining accuracy of the workpiece. During long-term use, due to the influence of various factors such as machining force, temperature changes, and wear, the flatness of the worktable is prone to change, leading to increased machining errors and affecting product quality.

[0003] However, existing technologies still have significant shortcomings, such as:

[0004] In the existing technology, the flatness calibration of CNC machine tool worktable is mostly done manually. This calibration process is cumbersome, requiring multiple manual measurements and adjustments, which is inefficient. At the same time, due to human factors, the calibration accuracy is difficult to guarantee, which is not conducive to the stable improvement of CNC machine tool processing quality. Utility Model Content

[0005] The purpose of this invention is to provide a flatness self-calibration device for a CNC machine tool worktable to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a flatness self-calibration device for a CNC machine tool worktable, comprising a base, wherein a machine tool body is mounted on the top of the base, characterized in that: a worktable is mounted between the base and the machine tool body;

[0007] The workbench includes a mounting housing mounted on the top of the base. A placement plate is provided on the top of the mounting housing. Inductive displacement sensors for detecting the flatness of the placement plate are installed around the bottom of the placement plate. A controller is installed inside the mounting housing. The output terminal of the controller is connected to the output terminal of the inductive displacement sensor to monitor the flatness of the placement plate.

[0008] An adjustment element is installed between the mounting housing and the placement plate to calibrate the flatness of the placement plate.

[0009] Preferably, the adjusting component includes two reciprocating lead screws rotatably mounted inside one side of the mounting housing. The surfaces of the two reciprocating lead screws are provided with movable wedge blocks. Fixed wedge blocks are fixedly mounted on both sides of the bottom of the placement plate, and the two fixed wedge blocks are slidably connected to the movable wedge blocks.

[0010] Two support plates are fixedly installed inside the mounting housing. One-way bearings are installed through the interior of the two support plates. The adjacent ends of the two reciprocating lead screws are connected to the two one-way bearings. A driven bevel gear is installed between the two one-way bearings. A servo motor is installed inside the mounting housing. A driving bevel gear is fixedly installed at the output end of the servo motor. The driving bevel gear meshes with the two driven bevel gears.

[0011] The output of the controller is connected to the input of the servo motor.

[0012] Preferably, the two one-way bearings are installed in opposite directions, and the two driven bevel gears are connected to the reciprocating lead screw through the two one-way bearings.

[0013] Preferably, electric push rods are hinged to both the front and rear sides inside the mounting housing, and hinge seats are installed on both the front and rear sides of the bottom of the placement plate. The telescopic ends of the electric push rods are connected to the bottom of the placement plate through the hinge seats.

[0014] The output of the controller is connected to the input of the electric actuator.

[0015] Preferably, a slide rod is fixedly installed on one side inside the mounting housing, and one end of the slide rod passes through two movable wedge blocks and is slidably connected to the two movable wedge blocks.

[0016] Preferably, both the driven bevel gear and the driving bevel gear are fitted with protective shells to protect them.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. Using the worktable setup, an inductive displacement sensor monitors the flatness of the placement plate. When the flatness of the placement plate tilts, the corresponding inductive displacement sensor transmits data to the controller. The controller then activates the servo motor to rotate forward or backward. When the servo motor rotates forward, one driven bevel gear drives the reciprocating screw to rotate, while the other driven bevel gear idles through a one-way bearing. Conversely, when the servo motor rotates backward, one driven bevel gear idles through a one-way bearing. Simultaneously with the rotation of the reciprocating screw, a movable wedge moves on the surface of the reciprocating screw and cooperates with a fixed wedge to lift one side of the placement plate. This achieves automated calibration of the placement plate's levelness, further improving calibration accuracy.

[0019] 2. When the flatness of the placement plate is tilted, the corresponding inductive displacement sensor transmits the data to the controller, and the controller opens the electric push rod on the corresponding side to extend and retract, lifting the front and rear sides of the placement plate. This allows for fine adjustment of the front and rear flatness of the placement plate, further improving the flatness of the placement plate. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the workbench structure of this utility model;

[0022] Figure 3 This is a top view of the mounting housing of this utility model;

[0023] Figure 4 This is a partial structural schematic diagram of the adjusting component of this utility model;

[0024] Figure 5 This utility model Figure 4 A magnified structural diagram of point A in the middle.

[0025] In the diagram: 1. Base; 2. Machine tool body; 3. Worktable; 31. Mounting housing; 32. Placement plate; 33. Inductive displacement sensor; 34. Controller; 35. Adjusting component; 351. Reciprocating lead screw; 352. Movable wedge block; 353. Fixed wedge block; 354. Support plate; 355. One-way bearing; 356. Driven bevel gear; 357. Servo motor; 358. Driving bevel gear; 359. Electric push rod; 3501. Hinge seat; 3502. Slide rod; 3503. Protective shell. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-5 This utility model provides a technical solution: a flatness self-calibration device for a CNC machine tool worktable, including a base 1, a machine tool body 2 installed on the top of the base 1, and a worktable 3 installed between the base 1 and the machine tool body 2;

[0028] The workbench 3 includes a mounting housing 31 mounted on the top of the base 1. A placement plate 32 is provided on the top of the mounting housing 31. Inductive displacement sensors 33 for detecting the flatness of the placement plate 32 are installed around the bottom of the placement plate 32. A controller 34 is installed inside the mounting housing 31. The output terminal of the controller 34 is connected to the output terminal of the inductive displacement sensor 33 for monitoring the flatness of the placement plate 32.

[0029] An adjusting element 35 is installed between the mounting housing 31 and the placement plate 32 to calibrate the flatness of the placement plate 32.

[0030] Reference Figure 2 , Figure 3 , Figure 4 as well as Figure 5 As shown, the adjusting component 35 includes two reciprocating screws 351 rotatably mounted inside one side of the mounting housing 31. The surfaces of the two reciprocating screws 351 are provided with movable wedge blocks 352. Fixed wedge blocks 353 are fixedly mounted on both sides of the bottom of the placement plate 32, and the two fixed wedge blocks 353 are slidably connected to the movable wedge blocks 352.

[0031] Two support plates 354 are fixedly installed inside the mounting housing 31. One-way bearings 355 are installed through the two support plates 354. The adjacent ends of the two reciprocating screws 351 are connected to the two one-way bearings 355. A driven bevel gear 356 is installed between the two one-way bearings 355. A servo motor 357 is installed inside the mounting housing 31. A driving bevel gear 358 is fixedly installed at the output end of the servo motor 357. The driving bevel gear 358 meshes with the two driven bevel gears 356.

[0032] The output of controller 34 is connected to the input of servo motor 357;

[0033] In this embodiment, an inductive displacement sensor 33 is used to monitor the flatness of the placement plate 32. When the flatness of the placement plate 32 is tilted, the corresponding inductive displacement sensor 33 transmits data to the controller 34, and the controller 34 activates the servo motor 357 to rotate forward or backward. When the servo motor 357 rotates forward, one driven bevel gear 356 drives the reciprocating screw 351 to rotate, while the other driven bevel gear 356 idles through the one-way bearing 355. Conversely, when the servo motor 357 rotates backward, one driven bevel gear 356 idles through the one-way bearing 355. While the reciprocating screw 351 rotates, the movable wedge block 352 moves on the surface of the reciprocating screw 351 and cooperates with the fixed wedge block 353 to lift one side of the placement plate 32. This achieves automated calibration of the levelness of the placement plate 32, further improving the calibration accuracy.

[0034] Reference Figure 4 As shown, the two one-way bearings 355 are installed in opposite directions, and the two driven bevel gears 356 are connected to the reciprocating screw 351 through the two one-way bearings 355.

[0035] In this embodiment, different driven bevel gears 356 can be driven to work according to the forward and reverse rotation of the servo motor 357, so as to avoid the synchronous operation of the two affecting the flatness calibration of the placement plate 32.

[0036] Reference Figure 3 As shown, electric push rods 359 are hinged to both the front and rear sides inside the mounting housing 31, and hinge seats 3501 are installed on both the front and rear sides of the bottom of the placement plate 32. The telescopic end of the electric push rod 359 is connected to the bottom of the placement plate 32 through the hinge seat 3501; the output end of the controller 34 is connected to the input end of the electric push rod 359.

[0037] In this embodiment, when the flatness of the placement plate 32 is tilted, the corresponding inductive displacement sensor 33 transmits data to the inside of the controller 34, and the controller 34 opens the electric push rod 359 on the corresponding side to extend and retract, lifting the front and rear sides of the placement plate 32, thereby enabling fine adjustment of the front and rear flatness of the placement plate 32, so as to further improve the flatness of the placement plate 32.

[0038] Reference Figure 3 As shown, a slide rod 3502 is fixedly installed on one side inside the housing 31, and one end of the slide rod 3502 passes through two movable wedge blocks 352 and is slidably connected to the two movable wedge blocks 352.

[0039] In this embodiment, the movable wedge 352 can maintain its stability when it moves, so as to avoid the movable wedge 352 shifting during movement and affecting the flatness adjustment of the placement plate 32.

[0040] Reference Figure 3 As shown, both the driven bevel gear 356 and the driving bevel gear 358 are equipped with protective shells 3503 to protect them.

[0041] Working principle: During the operation of the CNC machine tool, the inductive displacement sensor 33 monitors the flatness of the placement plate 32. When the flatness of the placement plate 32 is tilted, the corresponding inductive displacement sensor 33 transmits the data to the controller 34. The controller 34 then turns on the servo motor 357 to rotate forward or backward. When the servo motor 357 rotates forward, one driven bevel gear 356 drives the reciprocating screw 351 to rotate, while the other driven bevel gear 356 idles through the one-way bearing 355. Conversely, when the servo motor 357 rotates backward, one driven bevel gear 356 idles through the one-way bearing 355. While the reciprocating screw 351 rotates, the movable wedge block 352 moves on the surface of the reciprocating screw 351 and cooperates with the fixed wedge block 353 to lift one side of the placement plate 32, thereby automatically calibrating the levelness of the placement plate 32.

[0042] Furthermore, when the flatness of the placement plate 32 tilts, the corresponding inductive displacement sensor 33 transmits the data to the inside of the controller 34, and the controller 34 opens the electric push rod 359 on the corresponding side to extend and retract, lifting the front and rear sides of the placement plate 32, thereby enabling fine adjustment of the front and rear flatness of the placement plate 32.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A self-calibration device for the flatness of a CNC machine tool worktable, comprising a base (1), wherein a machine tool body (2) is mounted on the top of the base (1), characterized in that: A worktable (3) is installed between the base (1) and the machine tool body (2); The workbench (3) includes a mounting housing (31) mounted on the top of the base (1). A placement plate (32) is provided on the top of the mounting housing (31). Inductive displacement sensors (33) for detecting the flatness of the placement plate (32) are installed around the bottom of the placement plate (32). A controller (34) is installed inside the mounting housing (31). The output end of the controller (34) is connected to the output end of the inductive displacement sensor (33) for monitoring the flatness of the placement plate (32). An adjusting element (35) is installed between the mounting housing (31) and the placement plate (32) to calibrate the flatness of the placement plate (32).

2. The flatness self-calibration device for a CNC machine tool worktable according to claim 1, characterized in that: The adjusting component (35) includes two reciprocating screws (351) rotatably mounted inside one side of the mounting housing (31). The surfaces of the two reciprocating screws (351) are provided with movable wedge blocks (352). Fixed wedge blocks (353) are fixedly mounted on both sides of the bottom of the placement plate (32), and the two fixed wedge blocks (353) are slidably connected to the movable wedge blocks (352). Two support plates (354) are fixedly installed inside the mounting housing (31). One-way bearings (355) are installed through the two support plates (354). The adjacent ends of the two reciprocating screws (351) are connected to the two one-way bearings (355). A driven bevel gear (356) is installed between the two one-way bearings (355). A servo motor (357) is installed inside the mounting housing (31). An active bevel gear (358) is fixedly installed at the output end of the servo motor (357). The active bevel gear (358) meshes with the two driven bevel gears (356). The output of the controller (34) is connected to the input of the servo motor (357).

3. The flatness self-calibration device for a CNC machine tool worktable according to claim 2, characterized in that: The two one-way bearings (355) are installed in opposite directions, and the two driven bevel gears (356) are connected to the reciprocating screw (351) via the two one-way bearings (355).

4. The flatness self-calibration device for a CNC machine tool worktable according to claim 2, characterized in that: Electric push rods (359) are hinged to both the front and rear sides inside the mounting housing (31), and hinge seats (3501) are installed on both the front and rear sides of the bottom of the placement plate (32). The telescopic end of the electric push rod (359) is connected to the bottom of the placement plate (32) through the hinge seat (3501). The output of the controller (34) is connected to the input of the electric push rod (359).

5. The flatness self-calibration device for a CNC machine tool worktable according to claim 1, characterized in that: A slide rod (3502) is fixedly installed on one side inside the mounting housing (31), and one end of the slide rod (3502) passes through two movable wedges (352) and is slidably connected to the two movable wedges (352).

6. The flatness self-calibration device for a CNC machine tool worktable according to claim 2, characterized in that: The driven bevel gear (356) and the driving bevel gear (358) are both equipped with protective shells (3503) to protect the driven bevel gear (356) and the driving bevel gear (358).

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