Z-axis counterweight pulley block device of three-coordinate measuring machine

Abstract

The utility model discloses a Z-axis counterweight pulley block device of a three-coordinate measuring machine, which comprises a Z axis, the Z axis is arranged on the three-coordinate measuring machine opposite to a counterweight block through a steel wire rope and a pulley block mechanism, and the steel wire rope is sequentially wound on a first fixed pulley, a movable pulley and a second fixed pulley from a first fixed end to a second fixed end. The second fixed end is installed on a balancing weight, and the balancing weight is installed on the sliding rail mechanism in a sliding mode. According to the utility model, by optimizing the design of the pulley block mechanism and the counterweight block, the counterweight stroke is shortened and the height of the counterweight block is reduced, so that the structure of the three-coordinate measuring machine is optimized, the vibration of the Z axis is further reduced through the auxiliary balancing effect of the air cylinder, the stability and the precision of the movement of the Z axis are improved, and the working efficiency is improved. The balance effect and the stability are further improved through the two pulley block mechanisms and the air cylinders which are symmetrically arranged.

Description

Technical Field

[0001] The utility model relates to the technical field of three-coordinate measuring machines, in particular to a Z-axis counterweight pulley block device for a three-coordinate measuring machine. Background Art

[0002] In a three-dimensional coordinate measuring machine, the Z-axis is the main moving part in the vertical direction, and its stability and accuracy are crucial to the overall measurement effect. However, due to the heavy weight of the Z-axis, it is easy to vibrate during movement, affecting the measurement accuracy. In order to balance the weight of the Z-axis, a counterweight block is usually used. The traditional counterweight block design often leads to a long counterweight stroke and a high height, which increases the overall structural complexity of the three-dimensional coordinate measuring machine and is not conducive to optimizing the measurement accuracy and stability.

[0003] The utility model aims to provide a Z-axis counterweight pulley block device for a three-dimensional coordinate measuring machine, which optimizes the structure of the three-dimensional coordinate measuring machine and improves the measurement accuracy and stability by optimizing the design of the pulley block mechanism and the counterweight block, shortening the stroke of the counterweight and reducing its height. Utility Model Content

[0004] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical scheme: a Z-axis counterweight pulley block device of a three-dimensional coordinate measuring machine, comprising: a Z-axis vertically installed on the three-dimensional coordinate measuring machine, the Z-axis is installed on the three-dimensional coordinate measuring machine relative to the counterweight block through a wire rope and a pulley block mechanism, the pulley block mechanism comprises a first fixed pulley, a second fixed pulley and a movable pulley, the first fixed pulley and the second fixed pulley are installed on the upper support part of the three-dimensional coordinate measuring machine, the second fixed pulley is arranged below the first fixed pulley, and the movable pulley is installed on the counterweight block, the wire rope comprises a first fixed end and a second fixed end, the first fixed end is installed on the side of the Z-axis, the wire rope is sequentially wound around the first fixed pulley, the movable pulley, and the second fixed pulley from the first fixed end to the second fixed end, the second fixed end is installed on the counterweight block, and the counterweight block is slidably installed on the slide rail mechanism.

[0005] As a preferred solution of the utility model, the slide rail mechanism includes a guide rail and an assembly set, the guide rail is vertically installed on the lower support part of the three-dimensional coordinate measuring machine, the assembly set is fixedly installed on the side of the counterweight block, and the assembly set is slidably connected to the guide rail through a guide shoe fixedly installed on the side.

[0006] As a preferred solution of the utility model, a cylinder is also fixedly installed on the lower support part. The cylinder is vertically arranged on the inner side of the assembly set. The protruding end of the cylinder is fixedly connected to the top surface of the assembly set. The cylinder provides a downward pulling force to balance the weight of the Z-axis, reduce the vibration of the Z-axis, and improve the stability and accuracy of the Z-axis movement.

[0007] As a preferred solution of the utility model, the steel wire rope, pulley block mechanism, cylinder, guide rail and assembly set are symmetrically arranged in two groups and installed on both sides of the Z axis to improve the balance effect and stability.

[0008] As a preferred solution of the utility model, the first fixed pulleys are horizontally arranged in two groups, which are used to open up the space between the Z-axis and the counterweight block, thereby further shortening the stroke of the counterweight and reducing its height.

[0009] As a preferred solution of the utility model, the second fixed end is installed on the counterweight block through a connecting pin and a nut, and the connecting pin and the nut can conveniently adjust the tightness of the wire rope.

[0010] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0011] The utility model achieves a shortened counterweight stroke and a lowered counterweight height by optimizing the design of the pulley block mechanism and the counterweight block, thereby optimizing the structure of the three-dimensional coordinate measuring machine. At the same time, through the auxiliary balancing effect of the cylinder, the vibration of the Z-axis is further reduced, and the stability and accuracy of the Z-axis movement are improved. In addition, the two groups of pulley block mechanisms and cylinders arranged symmetrically further improve the balancing effect and stability. The utility model has the advantages of simple structure, convenient operation and precise adjustment, and is suitable for various high-precision three-dimensional coordinate measuring machines. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is an enlarged view of the local structure of the utility model;

[0014] Figure 3 The utility model is a schematic diagram of the connection between the steel wire rope and the pulley block.

[0015] In the figure: 1. Z axis; 2. cylinder; 3. wire rope; 4. first fixed end; 5. first fixed pulley; 6. upper support part; 7. lower support part; 8. counterweight; 9. guide rail; 10. second fixed pulley; 11. movable pulley; 12. second fixed end; 13. assembly set. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0017] Example 1

[0018] like Figures 1 to 3As shown, a specific embodiment of a Z-axis counterweight pulley block device for a three-dimensional coordinate measuring machine described in the utility model comprises: a Z-axis 1 vertically mounted on the three-dimensional coordinate measuring machine, characterized in that: the Z-axis 1 is mounted on the three-dimensional coordinate measuring machine relative to a counterweight block 8 through a wire rope 3 and a pulley block mechanism, the pulley block mechanism comprises a first fixed pulley 5, a second fixed pulley 10 and a movable pulley 11, the first fixed pulley 5 and the second fixed pulley 10 are mounted on an upper support portion 6 of the three-dimensional coordinate measuring machine, the second fixed pulley 10 is arranged below the first fixed pulley 5, the movable pulley 11 is mounted on the counterweight block 8, the wire rope 3 and the pulley block mechanism are arranged on the upper support portion 6 of the three-dimensional coordinate measuring machine, the second fixed pulley 10 is arranged below the first fixed pulley 5, the movable pulley 11 is mounted on the counterweight block 8, and ... and the movable pulley 11 are mounted on the counterweight block 8, and the wire rope 3 and the pulley block mechanism are arranged on the upper support portion 6 of the three-dimensional coordinate measuring machine, the second fixed pulley 10 and the movable pulley 11 are mounted on the counterweight block 8, and the wire rope 3 and the pulley The rope 3 includes a first fixed end 4 and a second fixed end 12, the first fixed end 4 is installed on the side of the Z-axis 1, the wire rope 3 is wound around the first fixed pulley 5, the movable pulley 11, and the second fixed pulley 10 in sequence from the first fixed end 4 to the second fixed end 12, the second fixed end 12 is installed on the counterweight block 8, and the counterweight block 8 is slidably installed on the slide rail mechanism, the slide rail mechanism includes a guide rail 9 and an assembly set 13, the guide rail 9 is vertically installed on the lower support part 7 of the three-dimensional coordinate measuring machine, the assembly set 13 is fixedly installed on the side of the counterweight block 8, and the assembly set 13 is slidably connected to the guide rail 9 through a guide shoe fixedly installed on the side.

[0019] A cylinder 2 is also fixedly mounted on the lower support portion 7. The cylinder 2 is vertically arranged on the inner side of the assembly sleeve 13. The protruding end of the cylinder 2 is fixedly connected to the top surface of the assembly sleeve 13. The cylinder 2 provides a downward pulling force to balance the weight of the Z-axis 1, reduce the vibration of the Z-axis 1, and improve the stability and accuracy of the movement of the Z-axis 1.

[0020] The steel wire rope 3 , the pulley block mechanism, the air cylinder 2 , the guide rail 9 and the assembly set 13 are all symmetrically arranged in two groups and installed on both sides of the Z axis 1 .

[0021] The first fixed pulleys 5 are horizontally arranged in two groups to expand the space between the Z-axis 1 and the counterweight, thereby further shortening the travel of the counterweight and reducing its height.

[0022] The second fixed end 12 is mounted on the counterweight 8 via a connecting pin and a nut. The connecting pin and the nut can conveniently adjust the tightness of the steel wire rope 3 .

[0023] Working principle of the utility model: the utility model connects the Z-axis 1 and the counterweight 8 through a steel wire rope 3, and the steel wire rope 3 passes around the first fixed pulley 5, the movable pulley 11 and the second fixed pulley 10 in turn to form a stable pulley block system. When the Z-axis 1 moves upward, the steel wire rope 3 is guided by the pulley block to make the counterweight 8 slide downward, generating a force opposite to the movement of the Z-axis 1, thereby effectively balancing the weight of the Z-axis 1 and reducing vibration. The counterweight 8 is installed on the slide rail mechanism, and the sliding connection between the assembly set 13 and the guide rail 9 ensures the smoothness and accuracy of the movement of the counterweight 8. The cylinder 2 serves as an auxiliary balancing device to provide downward pulling force, further enhancing the counterweight effect and improving the smoothness and accuracy of the movement of the Z-axis 1; the pulley block mechanism and the cylinder 2 are symmetrically arranged on both sides of the Z-axis 1, and the symmetrical arrangement is adopted to improve the stability of the device.

[0024] The components in this article are all universal standard parts or components known to those skilled in the art. Their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods, so they will not be described in detail here.

[0025] Although the specific embodiments of the present invention are described in detail above, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the field without departing from the purpose of the present invention, and modifications or deformations without creative labor are still within the scope of protection of the present invention.

Claims

1. A Z-axis counterweight pulley assembly device for a three-dimensional coordinate measuring machine, comprising: A Z axis (1) vertically mounted on a three-dimensional coordinate measuring machine, characterized in that: the Z axis (1) is mounted on the three-dimensional coordinate measuring machine relative to a counterweight (8) via a steel wire rope (3) and a pulley block mechanism, the pulley block mechanism comprising a first fixed pulley (5), a second fixed pulley (10) and a movable pulley (11), the first fixed pulley (5) and the second fixed pulley (10) being mounted on an upper support portion (6) of the three-dimensional coordinate measuring machine, the second fixed pulley (10) being arranged on the first fixed pulley (5) and the second fixed pulley (10) being arranged on the first fixed pulley (5) and the second fixed pulley (10) being arranged on the first fixed pulley (5) and the second fixed pulley (10) being arranged on the first fixed pulley (5) and the second fixed pulley (10) being arranged on the second fixed pulley (10) and the first fixed pulley (10) being arranged on the first fixed pulley (5) and the second ... Below the pulley (5), the movable pulley (11) is installed on the counterweight (8), the steel wire rope (3) includes a first fixed end (4) and a second fixed end (12), the first fixed end (4) of the steel wire rope (3) is fixed to the side of the Z axis (1), and then passes around the first fixed pulley (5), the movable pulley (11) and the second fixed pulley (10) in sequence, and finally the second fixed end (12) is connected to the counterweight (8), and the counterweight (8) is slidably installed on the slide rail mechanism.

2. A coordinate measuring machine Z-axis counterweight pulley assembly according to claim 1, characterized in that: The slide rail mechanism comprises a guide rail (9) and an assembly sleeve (13); the guide rail (9) is vertically mounted on a lower support portion (7) of a three-dimensional coordinate measuring machine; the assembly sleeve (13) is fixedly mounted on a side of a counterweight (8); and the assembly sleeve (13) is slidably connected to the guide rail (9) via a guide shoe fixedly mounted on the side.

3. The Z-axis counterweight pulley assembly of a three-dimensional coordinate measuring machine according to claim 2, characterized in that: A cylinder (2) is also fixedly mounted on the lower support portion (7). The cylinder (2) is vertically arranged on the inner side of the assembly sleeve (13). The protruding end of the cylinder (2) is fixedly connected to the top surface of the assembly sleeve (13). The cylinder (2) provides a downward pulling force for balancing the weight of the Z axis (1), reducing the vibration of the Z axis (1), and improving the stability and precision of the movement of the Z axis (1).

4. The Z-axis counterweight pulley assembly of a three-dimensional coordinate measuring machine according to claim 3, characterized in that: The steel wire rope (3), the pulley block mechanism, the air cylinder (2), the guide rail (9) and the assembly set (13) are all symmetrically arranged in two groups and installed on both sides of the Z axis (1).

5. The Z-axis counterweight pulley assembly of a three-dimensional coordinate measuring machine according to claim 1, characterized in that: The first fixed pulleys (5) are arranged horizontally in two groups, and are used to open up the space between the Z axis (1) and the counterweight.

6. The Z-axis counterweight pulley assembly of a three-dimensional coordinate measuring machine according to claim 1, characterized in that: The second fixed end (12) is mounted on the counterweight (8) via a connecting pin and a nut, and the connecting pin and the nut can conveniently adjust the tightness of the steel wire rope (3).

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