Lifting device for three-coordinate measuring instrument

Abstract

The utility model relates to the technical field of three-coordinate measuring instrument equipment, in particular to a lifting device for a three-coordinate measuring instrument, which comprises a cross beam mounting frame, a driving component and a lifting vertical frame, the lifting vertical frame is slidably arranged on the cross beam mounting frame in the vertical direction, and the driving component is arranged on the cross beam mounting frame. The driving assembly is in transmission connection to the lifting vertical frame; the lifting vertical frame is of a long-strip-shaped structure arranged in the vertical direction. An inner contact face, an outer contact face, a first side contact face and a second side contact face are arranged on the lifting vertical frame. A first sliding part, a second sliding part, a third sliding part and a fourth sliding part are arranged on the cross beam mounting frame, the first sliding part is in sliding fit with the inner contact surface, the second sliding part is in sliding fit with the outer contact surface, the third sliding part is in sliding fit with the first side contact surface, and the fourth sliding part is in sliding fit with the second side contact surface. And the fourth sliding piece is in sliding fit with the second side contact surface. According to the scheme, the lifting device capable of accurately moving can be provided.

Description

Technical Field

[0001] The utility model relates to the technical field of coordinate measuring instrument equipment, in particular to a lifting device for a coordinate measuring instrument. Background Art

[0002] A coordinate measuring instrument refers to an instrument that can exhibit measurement capabilities such as geometric shape, length, and circumferential indexing within a six-sided space range, also known as a coordinate measuring machine or a coordinate measuring bed. A coordinate measuring instrument can also be defined as "an instrument with a detector that can move in three directions, can move on three mutually perpendicular guide rails, and this detector transmits signals in contact or non-contact ways, and the displacement measurement systems of the three axes (such as grating scales) calculate the points (x, y, z) of the workpiece and various functional measurements through a data processor or a computer, etc.". The measurement functions of a coordinate measuring instrument should include dimensional accuracy, positioning accuracy, geometric accuracy, and profile accuracy, etc.

[0003] In the prior art, the lifting device of a coordinate measuring instrument has a complex structure, and the friction generated during operation is relatively large. Therefore, when used for a long time, the lifting accuracy of the coordinate measuring instrument will be reduced. Summary of the Utility Model

[0004] To solve the above technical problems, the utility model provides a lifting device for a coordinate measuring instrument, and the specific technical solution is as follows:

[0005] A lifting device for a coordinate measuring instrument includes a crossbeam mounting frame, a driving component, and a lifting vertical frame. The lifting vertical frame is slidably arranged in the vertical direction on the crossbeam mounting frame. The driving component is arranged on the crossbeam mounting frame, and the driving component is in transmission connection with the lifting vertical frame. The lifting vertical frame is a long strip-shaped structure arranged in the vertical direction, and the cross-section of the lifting vertical frame in the horizontal direction is square. The side of the lifting vertical frame close to the crossbeam mounting frame is the inner contact surface, and the side of the lifting vertical frame far from the crossbeam mounting frame is the outer contact surface. The two surfaces of the lifting vertical frame adjacent to the inner contact surface are respectively the first side contact surface and the second side contact surface. The crossbeam mounting frame is provided with a first sliding member, a second sliding member, a third sliding member, and a fourth sliding member. The first sliding member is in sliding fit with the inner contact surface, the second sliding member is in sliding fit with the outer contact surface, the third sliding member is in sliding fit with the first side contact surface, and the fourth sliding member is in sliding fit with the second side contact surface.

[0006] Furthermore, the structures of the first sliding member, the second sliding member, the third sliding member, and the fourth sliding member are the same. The first sliding member includes a sliding block and a sliding air inlet. A ventilation cavity is provided inside the sliding block. An air outlet is provided on one side of the sliding block close to the lifting vertical frame. The sliding air inlet is fixedly provided at the side end of the sliding block and communicates with the ventilation cavity inside the sliding block. The ventilation cavity communicates with the air outlet. High-pressure gas enters the ventilation cavity through the sliding air inlet, and the high-pressure gas in the ventilation cavity is discharged through the air outlet to form a high-pressure air film between the sliding block and the lifting vertical frame.

[0007] Furthermore, the first sliding member further includes a ball head mounting rod. A ball head mounting groove that fits the ball head mounting rod is provided on the sliding block. A limiting cover is provided at the ball head mounting groove to limit the ball head mounting rod.

[0008] Furthermore, an installation notch is provided on the limiting cover, and the ball head mounting rod is inserted into the ball head mounting groove through the installation notch.

[0009] Furthermore, multiple first sliding members are provided, and the multiple first sliding members are respectively arranged on the upper and lower sides of the lifting vertical frame. The second sliding member is located between the multiple first sliding members arranged vertically.

[0010] Furthermore, two third sliding members and two fourth sliding members are respectively provided. The two third sliding members are respectively arranged on the upper and lower sides of the lifting vertical frame. The two fourth sliding members are respectively arranged on the upper and lower sides of the lifting vertical frame. The third sliding member and the fourth sliding member are symmetrically arranged.

[0011] Furthermore, the driving assembly includes a power motor, a first runner, a second runner, and a transmission belt. A frame is vertically provided at the upper end of the crossbeam mounting frame. The first runner is rotatably provided on the crossbeam mounting frame. The second runner is rotatably provided on the frame. The transmission belt is sleeved on the first runner and the second runner. The transmission belt is fixedly connected to the lifting vertical frame. The power motor is drivingly connected to the first runner, and the transmission belt drives the lifting vertical frame to move in the vertical direction.

[0012] Furthermore, bending portions are provided on both sides of the frame, and the driving assembly is located inside the bending portions, the frame, and the lifting vertical frame.

[0013] Compared with the prior art, the present utility model has the following beneficial effects:

[0014] First, in this solution, the first sliding member is in sliding fit with the inner contact surface, the second sliding member is in sliding fit with the outer contact surface, the third sliding member is in sliding fit with the first side contact surface, and the fourth sliding member is in sliding fit with the second side contact surface. By providing the first sliding member, the second sliding member, the third sliding member, and the fourth sliding member, the four sides of the lifting vertical frame can be respectively limited, thereby ensuring that the lifting vertical frame can move stably in the vertical direction.

[0015] Second, in this solution, a filling medium is formed between the crossbeam mounting frame and the lifting vertical frame through a high-pressure air film, which can reduce the friction between the crossbeam mounting frame and the lifting vertical frame, thereby improving the lifting accuracy of the coordinate measuring machine.

[0016] Third, the drive assembly is located inside the bent portion, the frame, and the lifting vertical frame, which can cover the drive assembly to prevent external debris during operation from being embedded in the drive assembly, resulting in the jamming and damage of the conveyor belt and affecting the moving accuracy of the coordinate measuring machine. Brief Description of the Drawings

[0017] Figure 1 is a three-dimensional structural schematic diagram of the lifting device;

[0018] Figure 2 is a structural schematic diagram of the crossbeam mounting frame part;

[0019] Figure 3 is a matching structural schematic diagram of the crossbeam mounting frame and the lifting vertical frame in the lifting device;

[0020] Figure 4 is a bottom view of the lifting vertical frame in the lifting device;

[0021] Figure 5 is a three-dimensional structural schematic diagram of the first sliding member in the lifting device;

[0022] Figure 6 is a matching structural schematic diagram of the lifting vertical frame and the drive assembly in the lifting device.

[0023] Reference Numerals: Crossbeam Mounting Frame 1, Frame 11, Drive Assembly 2, Power Motor 21, First Runner 22, Second Runner 23, Transmission Belt 24, Lifting Vertical Frame 3, Inner Contact Surface 31, Outer Contact Surface 32, First Side Contact Surface 33, Second Side Contact Surface 34, First Sliding Member 4, Sliding Block 41, Ball Head Mounting Groove 411, Limit Cover 412, Sliding Air Inlet 42, Ball Head Mounting Rod 43, Second Sliding Member 5, Third Sliding Member 6, Fourth Sliding Member 7. Detailed Description of the Embodiment

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] As Figures 1 to 6As shown in the figure, a lifting device for a three-coordinate measuring instrument includes a crossbeam mounting bracket 1, a driving assembly 2, and a lifting vertical bracket 3. The lifting vertical bracket 3 is slidably arranged in the vertical direction on the crossbeam mounting bracket 1. The driving assembly 2 is arranged on the crossbeam mounting bracket 1, and the driving assembly 2 is in transmission connection with the lifting vertical bracket 3. During the assembly of the device, the crossbeam mounting bracket 1 is mounted on the crossbeam of the device, and the measuring instrument is mounted at the lower end of the lifting vertical bracket 3. Among them, the lifting vertical bracket 3 is slidably arranged on the crossbeam mounting bracket 1, and the driving assembly 2 is used to control the lifting vertical bracket 3 to move in the vertical direction on the crossbeam mounting bracket 1.

[0026] In some embodiments, the lifting vertical bracket 3 is a long strip structure arranged in the vertical direction. The cross-section of the lifting vertical bracket 3 in the horizontal direction is square. One side of the lifting vertical bracket 3 close to the crossbeam mounting bracket 1 is the inner contact surface 31, and the side of the lifting vertical bracket 3 far from the crossbeam mounting bracket 1 is the outer contact surface 32. The two surfaces of the lifting vertical bracket 3 adjacent to the inner contact surface 31 are the first side contact surface 33 and the second side contact surface 34 respectively. The crossbeam mounting bracket 1 is provided with a first sliding member 4, a second sliding member 5, a third sliding member 6, and a fourth sliding member 7. The first sliding member 4 is in sliding fit with the inner contact surface 31, the second sliding member 5 is in sliding fit with the outer contact surface 32, the third sliding member 6 is in sliding fit with the first side contact surface 33, and the fourth sliding member 7 is in sliding fit with the second side contact surface 34. By setting the first sliding member 4, the second sliding member 5, the third sliding member 6, and the fourth sliding member 7, the four sides of the lifting vertical bracket 3 can be limited respectively, so as to ensure that the lifting vertical bracket 3 can move stably in the vertical direction.

[0027] In some embodiments, the structures of the first sliding member 4, the second sliding member 5, the third sliding member 6, and the fourth sliding member 7 are the same. The first sliding member 4 includes a sliding block 41 and a sliding air inlet 42. A ventilation cavity is arranged inside the sliding block 41. An air outlet is arranged on the side of the sliding block 41 close to the lifting vertical bracket 3. The sliding air inlet 42 is fixedly arranged at the side end of the sliding block 41, and the sliding air inlet 42 communicates with the ventilation cavity inside the sliding block 41. The ventilation cavity communicates with the air outlet. High-pressure gas enters the ventilation cavity through the sliding air inlet 42, and the high-pressure gas in the ventilation cavity is discharged through the air outlet to form a high-pressure air film between the sliding block 41 and the lifting vertical bracket 3. In this solution, the high-pressure air film forms a filling medium between the crossbeam mounting bracket 1 and the lifting vertical bracket 3, so as to reduce the friction between the crossbeam mounting bracket 1 and the lifting vertical bracket 3, thereby improving the lifting accuracy of the three-coordinate measuring instrument.

[0028] In some embodiments, the first sliding member 4 further includes a ball head mounting rod 43. One end of the ball head mounting rod 43 is provided with a ball head. The ball head mounting rod 43 is fixedly mounted on the cross beam mounting bracket 1, and the side where the ball head is provided faces the side of the lifting vertical frame 3. A ball head mounting groove 411 that fits the ball head mounting rod 43 is provided on the sliding block 41. The sliding block 41 is limited by the cooperation of the ball head mounting groove 411 and the ball head on the ball head mounting rod 43. A limiting cover 412 is provided at the ball head mounting groove 411. The limiting cover 412 limits the ball head mounting rod 43, so as to ensure that the sliding block 41 can rotate at a certain angle on the ball head mounting rod 43, so as to ensure that the sliding block 41 forms a relatively parallel angle with the outer surface of the lifting vertical frame 3, thereby improving the sliding stability of the lifting vertical frame 3 on the cross beam mounting bracket 1.

[0029] On this basis, an installation notch is provided on the limiting cover 412, and the ball head mounting rod 43 is inserted into the ball head mounting groove 411 through the installation notch.

[0030] In some embodiments, a plurality of the first sliding members 4 are provided, and the plurality of first sliding members 4 are respectively arranged on the upper and lower sides of the lifting vertical frame 3. The second sliding member 5 is located between the plurality of first sliding members 4 arranged up and down;

[0031] Optionally, two first sliding members 4 are provided. The two first sliding members 4 are arranged up and down on the lifting vertical frame 3. The second sliding member 5 is arranged between the two first sliding members 4, thereby forming a relatively stable three-point limiting structure to ensure the setting stability of the lifting vertical frame 3 on the cross beam mounting bracket 1.

[0032] On this basis, four first sliding members 4 or six first sliding members 4 can also be provided. An even number of first sliding members 4 are symmetrically distributed up and down on the first sliding member 4 to ensure the setting stability of the lifting vertical frame 3 on the cross beam mounting bracket 1.

[0033] Optionally, three first sliding members 4 are provided. One of the three first sliding members 4 is arranged on the upper side of the lifting vertical frame 3, and two of the first sliding members 4 are arranged on the lower side of the lifting vertical frame 3. The second sliding member 5 is arranged between the upper and lower first sliding members 4, thereby forming a stable limiting structure to ensure the setting stability of the lifting vertical frame 3 on the cross beam mounting bracket 1.

[0034] In some embodiments, two third sliding members 6 and two fourth sliding members 7 are respectively provided. The two third sliding members 6 are respectively arranged on the upper and lower sides of the lifting vertical frame 3. The two fourth sliding members 7 are respectively arranged on the upper and lower sides of the lifting vertical frame 3. The third sliding member 6 and the fourth sliding member 7 are symmetrically arranged to ensure the setting stability of the lifting vertical frame 3 on the cross beam mounting bracket 1.

[0035] In some embodiments, the driving assembly 2 includes a power motor 21, a first rotating wheel 22, a second rotating wheel 23 and a transmission belt 24. A frame 11 is vertically arranged on the upper end of the beam mounting frame 1. The first rotating wheel 22 is rotatably arranged on the beam mounting frame 1, and the second rotating wheel 23 is rotatably arranged on the frame 11. The transmission belt 24 is sleeved on the first rotating wheel 22 and the second rotating wheel 23. The transmission belt 24 is fixedly connected to the lifting vertical frame 3. The power motor 21 is transmission-connected to the first rotating wheel 22, and the transmission belt 24 drives the lifting vertical frame 3 to move in the vertical direction.

[0036] In some embodiments, bending portions are provided on both sides of the frame 11, and the drive assembly 2 is located on the inner side of the bending portion, the frame 11 and the lifting vertical frame 3, so that the drive assembly 2 can be covered to prevent external debris from being embedded in the drive assembly 2 during operation, causing the conveyor belt to be stuck and damaged, thereby affecting the movement accuracy of the three-dimensional coordinate measuring instrument.

[0037] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the claims of the present invention.

Claims

1. A lifting device for a three-coordinate measuring instrument, characterized in that: The invention comprises a cross-beam mounting frame (1), a driving assembly (2) and a lifting frame (3); the lifting frame (3) is slidably arranged on the cross-beam mounting frame (1) in a vertical direction; the driving assembly (2) is arranged on the cross-beam mounting frame (1); and the driving assembly (2) is connected to the lifting frame (3) in a transmission manner; the lifting frame (3) is a long strip structure arranged in a vertical direction; the horizontal cross-section of the lifting frame (3) is square; the side of the lifting frame (3) close to the cross-beam mounting frame (1) is an inner contact surface (31); and the side of the lifting frame (3) away from the cross-beam mounting frame (1) is an outer contact surface (32). 2), two surfaces adjacent to the inner contact surface (31) on the lifting frame (3) are respectively a first side contact surface (33) and a second side contact surface (34); a first sliding member (4), a second sliding member (5), a third sliding member (6) and a fourth sliding member (7) are provided on the crossbeam mounting frame (1), the first sliding member (4) is slidably matched with the inner contact surface (31), the second sliding member (5) is slidably matched with the outer contact surface (32), the third sliding member (6) is slidably matched with the first side contact surface (33), and the fourth sliding member (7) is slidably matched with the second side contact surface (34).

2. The lifting device for a three-dimensional coordinate measuring machine according to claim 1, characterized in that: The first sliding member (4), the second sliding member (5), the third sliding member (6) and the fourth sliding member (7) have the same structure. The first sliding member (4) comprises a sliding block (41) and a sliding air inlet (42). A ventilation cavity is arranged on the inner side of the sliding block (41). A side of the sliding block (41) close to the lifting frame (3) is provided with an air outlet. The sliding air inlet (42) is fixedly arranged at a side end of the sliding block (41), and the sliding air inlet (42) is connected to the ventilation cavity on the inner side of the sliding block (41). The ventilation cavity is connected to the air outlet. High-pressure gas enters the ventilation cavity through the sliding air inlet (42), and the high-pressure gas in the ventilation cavity is discharged through the air outlet to form a high-pressure gas film between the sliding block (41) and the lifting frame (3).

3. The lifting device for a three-dimensional coordinate measuring machine according to claim 2, characterized in that: The first sliding member (4) also includes a ball head mounting rod (43), the sliding block (41) is provided with a ball head mounting groove (411) that matches the ball head mounting rod (43), and a limiting cover (412) is provided at the ball head mounting groove (411), and the limiting cover (412) limits the ball head mounting rod (43).

4. The lifting device for a three-dimensional coordinate measuring machine according to claim 3, characterized in that: The limiting cover (412) is provided with a mounting notch, and the ball head mounting rod (43) is embedded in the ball head mounting groove (411) through the mounting notch.

5. The lifting device for a three-dimensional coordinate measuring machine according to claim 1, characterized in that: A plurality of the first sliding members (4) are provided, and the plurality of first sliding members (4) are respectively arranged on the upper and lower sides of the lifting vertical frame (3), and the second sliding member (5) is located between the plurality of first sliding members (4) arranged upper and lower.

6. The lifting device for a three-dimensional coordinate measuring machine according to claim 1, characterized in that: Two third sliding members (6) and two fourth sliding members (7) are respectively provided, the two third sliding members (6) are respectively arranged on the upper and lower sides of the lifting vertical frame (3), the two fourth sliding members (7) are respectively arranged on the upper and lower sides of the lifting vertical frame (3), and the third sliding members (6) and the fourth sliding members (7) are respectively arranged symmetrically.

7. The lifting device for a three-dimensional coordinate measuring machine according to claim 1, characterized in that: The driving assembly (2) comprises a power motor (21), a first rotating wheel (22), a second rotating wheel (23) and a transmission belt (24); a frame (11) is vertically arranged on the upper end of the crossbeam mounting frame (1); the first rotating wheel (22) is rotatably arranged on the crossbeam mounting frame (1); the second rotating wheel (23) is rotatably arranged on the frame (11); the transmission belt (24) is sleeved on the first rotating wheel (22) and the second rotating wheel (23); the transmission belt (24) is fixedly connected to the lifting frame (3); the power motor (21) is transmission-connected to the first rotating wheel (22); and the transmission belt (24) drives the lifting frame (3) to move in a vertical direction.

8. The lifting device for a three-dimensional coordinate measuring machine according to claim 7, characterized in that: Bending portions are provided on both sides of the frame (11), and the driving assembly (2) is located inside the bending portions, the frame (11) and the lifting vertical frame (3).

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