Search

CN-120252503-B - Ultra-high straightness high-precision guide rail of grating length measuring machine

CN120252503BCN 120252503 BCN120252503 BCN 120252503BCN-120252503-B

Abstract

The invention discloses an ultrahigh straightness high-precision guide rail of a grating length measuring machine, which comprises a marble base, a linear guide rail structure, a tailstock, a measuring head seat, side rods and a display screen, wherein the guide rail is arranged on the marble base, the tailstock is fixed at one end of the marble base, the measuring head seat is slidably arranged on the guide rail and matched with the tailstock for use, the side rods are respectively provided with two groups and are respectively arranged on the tailstock and the measuring head seat, the display screen is arranged on one side of the marble base, a workbench is also arranged on the guide rail in an erected mode, the linear guide rail structure comprises a guide rail body, a grating measuring assembly, a straightness monitoring mechanism and a scale grating surface cleaner, one side of the guide rail body is connected with the grating measuring assembly, and the grating measuring assembly comprises a grating reading head arranged on the measuring head seat and a scale grating body matched with the grating reading head for use. The high-precision guide rail structure designed by the invention can realize real-time monitoring of the guide rail and high-precision maintenance processing of the grating component, and improves the guide effect of the guide rail on the measuring head seat.

Inventors

  • WANG PINGJUN
  • WANG MEIQIN
  • YU SHISONG

Assignees

  • 淮安市计量测试中心

Dates

Publication Date
20260505
Application Date
20250401

Claims (6)

  1. 1. The ultra-high straightness high-precision guide rail of the grating length measuring machine comprises a marble Dan Ji (1), a linear guide rail structure (2), a tailstock (3), a measuring head seat (4), a side rod (5) and a display screen (6), wherein the linear guide rail structure (2) is erected on a marble Dan Ji (1), the tailstock (3) is fixed at one end of the marble Dan Ji (1), the measuring head seat (4) is slidably mounted on the linear guide rail structure (2) and is matched with the tailstock (3) for use, the side rod (5) is provided with two groups and is respectively mounted on the tailstock (3) and the measuring head seat (4), the display screen (6) is erected on one side of the marble Dan Ji (1), and a workbench (7) is erected on the guide rail, and is characterized in that the linear guide rail structure (2) comprises a guide rail body (8), a grating measuring assembly (9), a straightness monitoring mechanism (10) and a scale grating surface cleaner (11), one side of the guide rail body (8) is connected with the grating measuring assembly (9), the grating assembly (9) comprises a reading body (12) and a reading body (13) which is mounted on the grating head seat (4) in a position matched with the grating body (13), the straightness monitoring mechanism (10) is arranged at the edge of the grating reading head (12) and is opposite to the edge of the guide rail body (8), and the scale grating surface cleaners (11) are respectively provided with two groups and are symmetrically arranged at two ends of the grating reading head (12); The straightness monitoring mechanism (10) comprises a mounting plate (14), a conducting strip (15), a first contact strip (16), a second contact strip (17), an insulating connecting plate (18) and an indicator lamp (19), wherein the mounting plate (14) is fixed on the side face of a guide rail body (8), the conducting strips (15) are divided into a plurality of groups and are uniformly arranged on the mounting plate (14), the first contact strip (16) and the second contact strip (17) are symmetrically distributed above and below the conducting strip (15), the second contact strip (17) is externally connected with a power supply, the insulating connecting plate (18) is fixed on the first contact strip (16) and the outer end of the second contact strip (17) and is fixed on a grating reading head (12), the first contact strip (16) is connected with the indicator lamp (19) through a circuit, and the indicator lamp (19) is arranged on the grating reading head (12); The scale grating surface cleaner (11) comprises a shell (20), a motor (21), a rotating rod (22), a cleaning sleeve (23), a suction pipe (24), a suction hood (25), a dirt guiding pipe (26), an exhaust fan (27) and a blow-down pipe (28), wherein the shell (20) is fixed at the end part of a grating reading head (12) and is internally provided with a cleaning inner cavity (29), the motor (21) is installed on one side of the shell (20) and a power output end is connected with the rotating rod (22), the rotating rod (22) is rotatably installed in the dirt cleaning inner cavity, the cleaning sleeve (23) is sleeved on the rotating rod (22), the suction pipe (24) is arranged in the cleaning inner cavity (29) and is positioned on one side of the rotating rod (22), the lower part of the suction pipe (24) is connected with the plurality of groups of suction hoods (25), the tail end of the suction pipe (24) is connected with the dirt guiding pipe (26), and the exhaust fan (27) is installed at the tail end of the dirt guiding pipe (26) and the air outlet end is connected with the blow-down pipe (28).
  2. 2. The ultra-high straightness high-precision guide rail of the grating length measuring machine according to claim 1, wherein the first contact piece (16) and the second contact piece (17) are arranged in parallel up and down, and are made of conductive materials, and the inner ends of the first contact piece (16) and the second contact piece (17) are in contact with the conductive piece (15).
  3. 3. The ultra-high straightness high-precision guide rail of the grating length measuring machine according to claim 1, wherein a sealing gasket (30) is arranged at the bottom edge of the shell (20), and the sealing gasket (30) is in contact with the scale grating body (13).
  4. 4. The ultra-high straightness high-precision guide rail of the grating length measuring machine according to claim 1, wherein the cleaning sleeve (23) comprises a sponge sleeve (31) and a plurality of groups of cleaning strips (32) formed on the surface of the sponge sleeve (31), the cleaning strips (32) are in a convex structure, and the cleaning strips (32) positioned below are in contact with the surface of the scale grating body (13).
  5. 5. The ultra-high straightness high-precision guide rail of the grating length measuring machine according to claim 3, wherein the suction covers (25) are of horn-shaped structures, the diameter of the lower end is larger than that of the upper end, two adjacent groups of the suction covers (25) are distributed at equal intervals, and the suction covers (25) are positioned right above the scale grating body (13) and have a gap of 0.5cm-1cm between the suction covers.
  6. 6. The ultra-high straightness high-precision guide rail of the grating length measuring machine, as set forth in claim 1, characterized in that the drain pipe (28) is of an L-shaped structure as a whole, a lead-out opening (33) is formed at the outer end of the drain pipe, and the lead-out opening (33) is opened downwards.

Description

Ultra-high straightness high-precision guide rail of grating length measuring machine Technical Field The invention relates to the technical field of length measuring machines, in particular to an ultrahigh straightness high-precision guide rail of a grating length measuring machine. Background The length measuring machine takes the scale of a linear ruler or the wavelength of light waves as a known length, and utilizes a mechanical measuring head to carry out optical length measuring tools for contact measurement, the length measuring machine is provided with an adjustable workbench capable of moving in 3 coordinates and rotating in 2 coordinates, and is also provided with different measuring heads and accessories, and is commonly used for verifying a large-size gauge block and measuring the inner and outer sizes of various workpieces. The grating ruler is often applied to a closed-loop servo system of a numerical control machine tool and can be used for detecting linear displacement or angular displacement. The signal output by the measuring device is digital pulse, and has the characteristics of large detection range, high detection precision and high response speed. For example, in a numerical control machine tool, it is commonly used to detect the coordinates of a tool and a workpiece to observe and track a feed error, so as to play a role of compensating a motion error of the tool, and a grating scale is divided into a transmission grating and a reflection grating according to the manufacturing method and the optical principle. However, the existing grating length measuring machine has the following problems that the straightness and accuracy of a guide rail for guiding a measuring head seat directly influence the measuring accuracy in the process of measuring a workpiece, vibration generated by a length measuring machine body in the process of guiding along the guide rail possibly causes the accuracy of the guide rail to the measuring head to be reduced, a corresponding monitoring means is lacked, in addition, a grating ruler matched with the guide rail achieves the function of measuring distance, and when scale gratings of the grating ruler have dirt on the surface in the operation process of the machine body, the accuracy of measuring distance can be influenced. For this purpose, a corresponding technical solution is required to be designed to solve the existing technical problems. Disclosure of Invention The invention aims to provide an ultrahigh straightness high-precision guide rail of a grating length measuring machine, which solves the technical problems that the straightness and precision of the guide rail for guiding a measuring head seat directly influence the measuring precision, vibration generated by a length measuring machine body in the operation process along the guide rail possibly causes the accuracy of the guide rail to the measuring head to be reduced, a corresponding monitoring means is lacked, and in addition, a grating ruler matched with the guide rail achieves the function of measuring distance, and when scale gratings of the grating ruler have dirt on the surface in the operation process of the machine body, the accuracy of measuring distance can be influenced. The invention provides a high-precision guide rail with ultrahigh straightness of a grating length measuring machine, which comprises a marble base, a linear guide rail structure, a tailstock, a measuring head seat, a side rod and a display screen, wherein the guide rail is arranged on the marble base, the tailstock is fixed at one end of the marble base, the measuring head seat is slidably arranged on the linear guide rail structure and matched with the tailstock for use, the side rod is respectively provided with two groups and is respectively arranged on the tailstock and the measuring head seat, the display screen is arranged on one side of the marble base, a workbench is also arranged on the guide rail, the linear guide rail structure comprises a guide rail body, a grating measuring assembly, a straightness monitoring mechanism and a scale grating surface cleaner, one side of the guide rail body is connected with the grating measuring assembly, the grating measuring assembly comprises a grating reading head arranged on the measuring head seat and a grating body matched with the grating reading head for use, the scale body is arranged on one side of the guide rail body, the straightness monitoring mechanism is arranged on the edge of the grating reading head and is opposite to the edge of the guide rail body, and the linear guide rail structure is symmetrically provided with two ends of the grating surface cleaner; The straightness monitoring mechanism comprises a mounting plate, a conducting strip, a first contact strip, a second contact strip, an insulating connecting plate and an indicator lamp, wherein the mounting plate is fixed on the side face of the guide rail body, the conducting strips are divided into a