Linear guide rail measuring tool

Abstract

The utility model relates to the technical field of measuring equipment, in particular to a linear guide rail measuring tool which comprises a platform and a sliding supporting unit, a linear guide rail to be measured is installed on a horizontal installation face of the platform, the sliding supporting unit is located on the platform and can slide along the ridge of the platform, and a positioning unit is further installed on the sliding supporting unit. The positioning unit is connected with an inductance measuring head, and when the sliding supporting unit slides along the ridge of the platform, the inductance measuring head can make contact with the measuring face of the linear guide rail in a sliding mode. According to the detection tool, the precision of the working face and the side face of the double-zero-level platform is utilized, the degree of freedom of the inductive probe in all directions is limited through the positioning unit, the inductive probe is driven to make sliding contact with the measuring face of the linear guide rail in the process that the sliding supporting unit slides along the ridge of the platform, and therefore the straightness of the inductive probe is detected. Platform precision errors are not brought in, and the standard in the detection process can be highly unified.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring equipment, and specifically provides a linear guide rail measuring tool. Background Art

[0002] Linear guides are used in high-precision or high-speed linear reciprocating motion situations. They can bear a certain torque and achieve high-precision linear motion under high load. Ultra-high-precision guide installation and adjustment must be carried out with a unified measurement reference. The straightness of the linear guide working surface determines whether the accuracy of the linear guide meets the requirements. If there is a large deviation in the straightness, there will be a certain inclination when moving along the linear guide. Figure 1 As shown, the illustrated section of the linear guide rail is a cutaway section, and the shaded portion is the measuring surface 201 to be measured. The straightness accuracy detection of this portion requires special equipment for detection. In the prior art, the following patents involve linear guide rail measuring devices:

[0003] 1. The invention patent application with publication number "CN116222485A" and name "A linear guide precision detection device based on planar motor" includes a probe, a spherical universal joint, a table frame, a planar motor and a data processing device, etc., which can realize high-precision measurement of the straightness, parallelism and surface micromorphology of the linear guide.

[0004] 2. The invention patent application with publication number "CN116772780A" and name "A linear guide straightness detection device and detection method thereof" includes a connecting box, two first fixed plates, two detection device bodies, a clamping plate, two limit blocks, two second rotating rods, etc. This solution can reduce the subsequent cleaning process of the bottom of the linear guide and can fully detect the straightness of the linear guide.

[0005] Although the above-mentioned comparative documents all put forward corresponding technical solutions for the straightness or flatness of linear guide rails, their detection methods are based on visual detection or detection using displacement sensors, and there are technical problems such as large randomness in guide rail installation and adjustment, easy introduction of platform accuracy errors, and inability to achieve a high degree of uniformity in the benchmark. Therefore, how to propose a linear guide rail measurement tooling with a unified adjustment benchmark and high adjustment accuracy in this field is an urgent problem to be solved. Utility Model Content

[0006] In order to solve the above problems, the utility model provides a linear guide rail measuring tool, which can achieve a high degree of uniformity of the detection process benchmark, will not introduce platform accuracy error, and can make the installation and adjustment more accurate and easier.

[0007] The present invention provides a linear guide rail measuring tool, which includes a platform, a linear guide rail to be measured is installed on the horizontal installation surface of the platform, and also includes a sliding support unit, which is located on the platform and can slide along the edge of the platform; a positioning unit is also provided on the sliding support unit, and an inductive sensor head is connected to the positioning unit. When the sliding support unit slides along the edge of the platform, the inductive sensor head can slide and contact the measuring surface of the linear guide rail.

[0008] Preferably, the sliding support unit comprises a height gauge base located on the horizontal mounting surface of the platform, and a limit plate is connected to the side of the height gauge base, which can contact the side of the platform so that the height gauge base can slide close to the horizontal mounting surface of the platform.

[0009] Preferably, the positioning unit includes a height gauge vertically connected to the height gauge base and a gauge rod 1 vertically connected to the height gauge, and the inductive sensor head is connected to one end of the gauge rod 1.

[0010] Alternatively, the positioning unit includes a height gauge vertically connected to the height gauge base and a rod 1 vertically connected to the height gauge, and the positioning unit also includes a rod 2 vertically connected to the rod 1, and the inductive sensor head is connected to one end of the rod 2.

[0011] Preferably, the gauge rod 1 is connected to the height gauge via a height adjustment seat, and the height adjustment seat comprises a vertical sliding sleeve and a horizontal sliding sleeve, the vertical sliding sleeve is sleeved on the height gauge, and the horizontal sliding sleeve is sleeved on the gauge rod 1.

[0012] Preferably, the second meter rod is connected to the first meter rod via a meter rod clamp, the meter rod clamp is connected to one end of the first meter rod, and the second meter rod passes through the meter rod clamp and can slide relatively along the meter rod clamp.

[0013] Preferably, the vertical sliding sleeve, the horizontal sliding sleeve and the gauge rod clamp are all connected with locking screws, and the end surface of the locking screw can be in contact with the height gauge or the gauge rod one or the gauge rod two for locking.

[0014] Preferably, the interior of meter stem one and meter stem two is hollow, and the inductive head is clamped by a meter clamp, one end of the meter clamp clamps the inductive head, and the other end of the meter clamp can be inserted into meter stem one or meter stem two; one end of the meter clamp is divided into petals and the end of the meter clamp is an openable and closable wedge-shaped groove, and two mutually perpendicular end surfaces of the inductive head are provided with wedge-shaped blocks that cooperate with the wedge-shaped groove, and the side of the meter clamp is also provided with a locking bolt, which can close the wedge-shaped groove and clamp the wedge block on the inductive head.

[0015] Preferably, a fine-tuning sliding sleeve is sleeved above the vertical sliding sleeve and on the height gauge, and the fine-tuning sliding sleeve is connected to the vertical sliding sleeve via a fine-tuning bolt.

[0016] Preferably, a polyimide thermal insulation pad is connected below the base of the height gauge, and a molybdenum disulfide limiting pin is also connected to the limiting plate.

[0017] Compared with the prior art, the utility model can achieve the following beneficial effects: the detection tooling utilizes the accuracy of the working surface and side surfaces of the double zero-level platform, limits the degrees of freedom of the inductive probe in all directions through the positioning unit, and utilizes the sliding support unit to drive the inductive probe and the linear guide measuring surface to slide in contact during the sliding process along the platform edge, thereby detecting its straightness, which can achieve a high degree of unification of the detection process benchmark, unify the assembly benchmark to improve the assembly accuracy, and will not introduce platform accuracy errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the linear guide and the measuring surface;

[0019] Figure 2 The overall structure of the measuring tool provided according to the embodiment of the utility model is shown in FIG. Figure 1 (The inductive sensor head is installed on the second meter pole);

[0020] Figure 3 It is a schematic diagram of a meter clip and an inductive probe provided according to an embodiment of the utility model;

[0021] Figure 4 The overall structure of the measuring tool provided according to the embodiment of the utility model is shown in FIG. Figure 2 (The inductive probe is installed on the meter rod 1);

[0022] Figure 5 The overall structure of the measuring tool provided according to the embodiment of the utility model is shown in FIG. Figure 3 (The inductive sensor head is installed on the second meter pole);

[0023] Figure 6 According to the embodiment of the present utility model Figure 5 Local zoom Figure 1 ;

[0024] Figure 7 According to the embodiment of the present utility model Figure 5 Local zoom Figure 2 ;

[0025] Figure 8 It is a structural schematic diagram of a height gauge base and a limit plate provided according to an embodiment of the utility model.

[0026] The reference numerals include: platform 1, linear guide 2, measuring surface 201, pressure plate 3, long bolt 4, inductive probe 5, wedge block 501, table clamp 6, wedge groove 601, locking bolt 7, height adjustment seat 9, vertical sleeve 901, horizontal sleeve 902, height gauge 11, height gauge base 12, counterweight 13, polyimide thermal insulation pad 14, limit plate 15, molybdenum disulfide limit pin 16, table rod one 18, table rod clamp 19, locking screw 20, table rod two 21, fine-tuning sleeve 22, fine-tuning bolt 23. DETAILED DESCRIPTION

[0027] In the following, reference will be made to the Figure 1-Figure 8 Describe the embodiment of the utility model. In the following description, the same modules are represented by the same reference numerals. In the case of the same reference numerals, their names and functions are also the same. Therefore, the detailed description thereof will not be repeated.

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clear, the following Figure 1-Figure 8 It should be understood that the specific embodiments described herein are only used to explain the present invention and do not constitute a limitation on the present invention.

[0029] like Figure 1-Figure 8 As shown, a linear guide measuring tool comprises a platform 1, a linear guide 2 to be measured is mounted on the horizontal mounting surface of the platform 1 through a pressure plate 3 and a long bolt 4, and the linear guide measuring tool also comprises a sliding support unit, the sliding support unit is located on the platform 1 and can slide along the ridge of the platform 1, a positioning unit is also provided on the sliding support unit, an inductive probe 5 is connected to the positioning unit, and when the sliding support unit slides along the ridge of the platform 1, the inductive probe 5 can slide in contact with the measuring surface 201 of the linear guide 2. The detection tool utilizes the accuracy of the working surface and side surface of the double zero-level platform 1, limits the degree of freedom of the inductive probe 5 in all directions through the positioning unit, and utilizes the sliding support unit to drive the inductive probe 5 to slide in contact with the linear guide measuring surface 201 during the sliding process along the ridge of the platform 1, thereby detecting its straightness. Since the positioning unit limits the degrees of freedom of the inductive sensor head 5 in all directions, after the position of the inductive sensor head 5 is determined, the sliding support unit drives it to move in a straight line. At this time, the detection end of the inductive sensor head 5 slides in contact with the measuring surface 201. If the straightness of the measuring surface 201 meets the requirements, the data changes collected by the inductive sensor head 5 will meet the expected tolerance range.

[0030] The sliding support unit includes a height gauge base 12 located on the horizontal mounting surface of the platform 1, and a limit plate 15 is connected to the side of the height gauge base 12. The limit plate 15 can contact the side of the platform 1 so that the height gauge base 12 can slide close to the horizontal mounting surface of the platform 1. The height gauge base 12 and the limit plate 15 are respectively in contact with the horizontal mounting surface and the side of the platform 1, that is, the two can slide along the ridge of the platform 1 after being vertically connected.

[0031] The positioning unit includes a height gauge 11 vertically connected to a height gauge base 12 and a rod 18 vertically connected to the height gauge 11. The inductive head 5 is connected to one end of the rod 18. A groove matching the height gauge 11 is provided on the height gauge base 12. The height gauge 11 is inserted into the groove and fixed by screws. The position of the height gauge 11 is thus determined, and the position of the inductive head 5 is further determined. During the sliding process of the height gauge base 12 and the limit plate 15, the inductive head 5 will make a linear motion.

[0032] A polyimide insulation pad 14 is connected to the bottom of the height gauge base 12, and a molybdenum disulfide limit pin 16 is also connected to the limit plate 15. The polyimide insulation pad 14 and the molybdenum disulfide limit pin 16 are wear-resistant materials, which can avoid the measurement accuracy being affected by friction damage during the sliding process. Correspondingly, rolling bearings or ball bearings can be used instead. A counterweight 13 is installed on the upper surface of the height gauge base 12 to provide a counterweight during the sliding process, so that the center of gravity of the entire tooling is reasonably distributed.

[0033] The table rod 18 and the height gauge 11 are connected through the height adjustment seat 9, which includes a vertical sleeve 901 and a horizontal sleeve 902. The vertical sleeve 901 is sleeved on the height gauge 11, and the horizontal sleeve 902 is sleeved on the table rod 18. The vertical sleeve 901 can slide along the height gauge 11 to adjust the overall height of the table rod 18, and the horizontal sleeve 902 can slide along the table rod 18 to adjust the horizontal position of the inductive head 5. Figure 1 and Figure 4 As shown, during measurement, the inductive probe 5 at one end of the meter rod 18 can approach the linear guide 2 through the meter rod 18 and contact the measuring surface 201, while in this manner, the measuring surface on the other side of the linear guide 2 will need to be re-clamped.

[0034] Therefore, another preferred embodiment is as follows Figure 2 and Figure 7 As shown, the positioning unit also includes a second table rod 21 vertically connected to the first table rod 18, and the inductive probe 5 is connected to one end of the second table rod 21. This method does not require repeated clamping of the linear guide rail 2. When measuring the measuring surface on the other side of the linear guide rail 2, the second table rod 21 is installed on the first table rod 18, and the inductive probe 5 can be brought close to the opposite measuring surface. When in use, the inductive probe 5 can be connected to one end of the first table rod 18 or one end of the second table rod 21 according to the situation, and the vertical sliding sleeve 901 can also adjust the overall height of the second table rod 21.

[0035] The second meter rod 21 and the first meter rod 18 are connected by the meter rod clamp 19, and the meter rod clamp 19 is connected to one end of the meter rod 18. The second meter rod 21 passes through the meter rod clamp 19 and can slide relatively along it. The vertical height of the inductive head 5 can be adjusted separately through the meter rod clamp 19. The vertical sliding sleeve 901, the horizontal sliding sleeve 902 and the meter rod clamp 19 are all connected with a locking screw 20. The end surface of the locking screw 20 can be contacted and locked with the height gauge 11 or the meter rod 18 or the second meter rod 21. When adjusting, the corresponding positions of the vertical sliding sleeve 901, the horizontal sliding sleeve 902 and the meter rod clamp 19 can be limited or adjusted by the locking screw 20.

[0036] The interior of the meter rod 18 and the meter rod 21 is hollow, and the inductive probe 5 is clamped by the meter clamp 6. One end of the meter clamp 6 clamps the inductive probe 5, and the other end can be inserted into the meter rod 18 or the meter rod 2 18. One end of the meter clamp 6 is divided into petals, and the end of the meter clamp 6 is a wedge-shaped groove 601 that can be opened and closed. The two mutually perpendicular end faces of the inductive probe 5 are provided with a wedge block 501 that matches the wedge groove 601. The side of the meter clamp 6 is also provided with a locking bolt 7, and the locking bolt 7 can make the wedge groove 601 close and clamp the wedge block 501 on the inductive probe 5. A fine-tuning sleeve 22 is also sleeved on the vertical sleeve 901 and the height gauge 11. The fine-tuning sleeve 22 and the vertical sleeve 901 are connected by a fine-tuning bolt 23. When the height of the meter rod 18 needs to be fine-tuned, it can be adjusted by the fine-tuning bolt 23.

[0037] When in use, the specific working process of the detection is as follows: after clamping the inductive probe 5 with the meter clamp 6, use its connecting column to insert one end of the meter rod 18, and adjust the vertical sliding sleeve 901 and the horizontal sliding sleeve 902 to make the inductive probe 5 contact with the measuring surface 201. At this time, the sliding height gauge base 12 and the limit plate 15 can complete the measurement of the measuring surface 201.

[0038] If it is necessary to measure the opposite measuring surface 201, first remove the inductive probe 5 and the meter clamp 6, rotate the inductive probe 5 ninety degrees, clamp it on the meter clamp 6 and lock it, insert the meter stem clamp 19 into one end of meter stem one 18 using its connecting column, insert meter stem two 21 into the meter stem clamp 19, and then insert the meter clamp 6 into one end of meter stem two 21. By adjusting the meter stem clamp 19, the vertical sliding sleeve 901, and the horizontal sliding sleeve 902, the inductive probe 5 and the opposite measuring surface 201 are in contact, and then each locking screw 20 can be locked, thereby completing the reversal of the inductive probe 5, and then measuring the opposite measuring surface 201.

[0039] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

[0040] The above specific implementation methods of the utility model do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A linear guide rail measuring tool, comprising a platform (1), a linear guide rail (2) to be measured is mounted on a horizontal mounting surface of the platform (1), and is characterized in that: The invention also comprises a sliding support unit, which is located on the platform (1) and can slide along the ridge of the platform (1); a positioning unit is also provided on the sliding support unit, and an inductive sensor head (5) is connected to the positioning unit. When the sliding support unit slides along the ridge of the platform (1), the inductive sensor head (5) can slide and contact the measuring surface (201) of the linear guide rail (2).

2. The linear guide rail measuring tool according to claim 1, characterized in that: The sliding support unit comprises a height gauge base (12) located on a horizontal mounting surface of the platform (1); a side surface of the height gauge base (12) is connected to a limit plate (15); the limit plate (15) can contact the side surface of the platform (1) so that the height gauge base (12) can slide closely against the horizontal mounting surface of the platform (1).

3. The linear guide rail measuring tool according to claim 2, characterized in that: The positioning unit comprises a height gauge (11) vertically connected to a height gauge base (12) and a gauge rod (18) vertically connected to the height gauge (11), and an inductive sensor head (5) is connected to one end of the gauge rod (18).

4. The linear guide rail measuring tool according to claim 2, characterized in that: The positioning unit comprises a height gauge (11) vertically connected to a height gauge base (12) and a first gauge rod (18) vertically connected to the height gauge (11). The positioning unit also comprises a second gauge rod (21) vertically connected to the first gauge rod (18). The inductive sensor head (5) is connected to one end of the second gauge rod (21).

5. The linear guide rail measuring tool according to claim 3 or 4, characterized in that: The gauge rod 1 (18) is connected to the height gauge (11) via a height adjustment seat (9); the height adjustment seat (9) comprises a vertical sliding sleeve (901) and a horizontal sliding sleeve (902); the vertical sliding sleeve (901) is sleeved on the height gauge (11), and the horizontal sliding sleeve (902) is sleeved on the gauge rod 1 (18).

6. The linear guide rail measuring tool according to claim 4, characterized in that: The second meter rod (21) is connected to the first meter rod (18) via a meter rod clamp (19), the meter rod clamp (19) is connected to one end of the first meter rod (18), and the second meter rod (21) passes through the meter rod clamp (19) and can slide relatively along the meter rod clamp (19).

7. The linear guide rail measuring tool according to claim 6, characterized in that: The vertical sliding sleeve (901), the horizontal sliding sleeve (902) and the gauge rod clamp (19) are all connected with locking screws (20), and the end surface of the locking screws (20) can be in contact with the height gauge (11) or the gauge rod 1 (18) or the gauge rod 2 (21) for locking.

8. The linear guide rail measuring tool according to claim 7, characterized in that: The interiors of the meter rod 1 (18) and the meter rod 2 (21) are hollow, and the inductive probe (5) is clamped by a meter clamp (6), one end of the meter clamp (6) clamps the inductive probe (5), and the other end of the meter clamp (6) can be inserted into the meter rod 1 (18) or the meter rod 2 (21); one end of the meter clamp (6) is divided into petals, and the end of the meter clamp (6) is a wedge-shaped groove (601) that can be opened and closed, and two mutually perpendicular end surfaces of the inductive probe (5) are provided with wedge-shaped blocks (501) that cooperate with the wedge-shaped groove (601), and the side of the meter clamp (6) is also provided with a locking bolt (7), and the locking bolt (7) can close the wedge-shaped groove (601) to clamp the wedge-shaped block (501) on the inductive probe (5).

9. The linear guide rail measuring tool according to claim 8, characterized in that: A fine-tuning sleeve (22) is sleeved on the vertical sleeve (901) and on the height gauge (11), and the fine-tuning sleeve (22) is connected to the vertical sleeve (901) via a fine-tuning bolt (23).

10. The linear guide rail measuring tool according to claim 2, characterized in that: A polyimide heat insulation pad (14) is connected below the height gauge base (12), and a molybdenum disulfide limiting pin (16) is also connected to the limiting plate (15).

Images