Automatic calibrating device for straight steel ruler

Abstract

The utility model discloses an automatic calibrating device for a straight steel ruler, and relates to the technical field of straight steel ruler calibration, in particular to the automatic calibrating device for the straight steel ruler, which comprises a bottom plate and an L-shaped adjusting plate, a cavity base and a supporting plate are respectively mounted at the top of the bottom plate, and a transverse plate is mounted in front of the L-shaped adjusting plate. The top of the transverse plate is provided with an electric hydraulic push rod and a fixing rod. According to the automatic calibrating device for the straight steel ruler, through the arrangement of the transverse plate, the electric hydraulic push rod, the fixing rod, the lifting block, a positioning sliding block, a connecting rod, a supporting rod, a limiting pressing block and a standard ruler, the automatic calibrating device for the straight steel ruler has the effects that the position of the straight steel ruler is conveniently limited, and deviation of the position of the straight steel ruler is avoided; a detected straight steel ruler is placed on the L-shaped adjusting plate, and the positioning sliding block is matched with the connecting rod, so that the limiting clamping block conveniently presses the detected straight steel ruler downwards, the position of the straight steel ruler is conveniently limited, and the purpose of improving practicability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel ruler calibration, in particular to an automatic calibration device for a steel ruler. Background Art

[0002] A steel ruler is the simplest length measuring tool. After it is produced, it needs to be calibrated. The existing testing equipment does not effectively fix the steel ruler when in use, resulting in detection errors if it moves slightly during calibration. At the same time, manual detection is affected by factors such as the operator and the calibration environment, resulting in low measurement efficiency and poor accuracy. Therefore, an automatic calibration device for steel rulers is needed to solve the above problems.

[0003] The automatic calibration device for steel rulers in the prior art is not convenient for limiting the position of the steel ruler when calibrating the steel ruler, which affects the accuracy of the identification. In addition, the existing automatic calibration device for steel rulers is not convenient for adjusting the corresponding position of the zero scale of the steel ruler being tested and the standard ruler. An automatic calibration device for steel rulers is now invented to solve the above problems. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides an automatic calibration device for a steel ruler, which solves the problems raised in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] To achieve the above purpose, the utility model is implemented through the following technical solutions: an automatic calibration device for a steel ruler, comprising a bottom plate and an L-shaped adjustment plate, a cavity base and a support plate are respectively installed on the top of the bottom plate, a cross plate is installed in front of the L-shaped adjustment plate, an electric hydraulic push rod and a fixed rod are respectively installed on the top of the cross plate, a lifting block is installed on the movable end of the electric hydraulic push rod, positioning sliders are installed on both sides of the lifting block, connecting rods are rotatably connected on both sides of the fixed rod through shaft rods, a support rod is installed at the end of the connecting rod, a limited pressure block is installed at the end of the support rod away from the connecting rod, a standard ruler is installed on the top of the cavity base, and the inside of the cavity base A first servo motor is installed, and a gear with the same center as the axis of the output end of the first servo motor is installed at the output end of the first servo motor, the gear is meshed with a rack rod through teeth, a matching block is installed on the top of the rack rod, bar sliders are installed in front and back of the rack rod, a rectangular frame is installed on the inner top wall of the support plate, a second servo motor is installed on one side of the rectangular frame, a threaded rod with the same center as the axis of the output end of the second servo motor is installed at the output end of the second servo motor, a threaded ring block is transmission-connected on the outer surface of the threaded rod, rectangular sliders are installed in front and back of the threaded ring block, and a calibration camera is installed at the bottom of the threaded ring block.

[0008] Optionally, a positioning groove is formed on one side of the connecting rod with the left-right direction as the depth direction and the front-back direction as the length direction. The end of the positioning slider is located inside the positioning groove, and the positioning slider can slide along the length direction of the positioning groove.

[0009] Optionally, the bottom of the L-shaped adjustment plate is fixedly connected to the top of the matching block, and the position of the L-shaped adjustment plate is higher than the position of the cavity base.

[0010] Optionally, a strip slide groove is provided inside the cavity base with the front-to-rear direction as the depth direction and the left-to-right direction as the length direction. The end of the strip slide block is located inside the strip slide groove, and the strip slide block can slide along the length direction of the strip slide groove.

[0011] Optionally, the threaded rod is rotatably connected to the inner wall of the rectangular frame via a bearing, and the electric hydraulic push rod, the first servo motor, the second servo motor and the calibration camera are all electrically connected to an external power source via wires.

[0012] Optionally, the inner front wall and the inner rear wall of the rectangular frame are both provided with a rectangular slide groove with the front-to-back direction as the depth direction and the left-to-right direction as the length direction. The end of the rectangular slider is located inside the rectangular slide groove, and the rectangular slider can slide along the length direction of the rectangular slide groove.

[0013] Optionally, the position of the calibration camera corresponds to the positions of the standard ruler and the L-shaped adjustment plate, respectively, and the L-shaped adjustment plate is parallel to the standard ruler.

[0014] Optionally, the position of the limiting pressure block corresponds to the position of the L-shaped adjustment plate, through holes are provided on both side surfaces of the cavity base, and the position of the rack rod corresponds to the position of the through holes.

[0015] The utility model provides a steel ruler automatic calibration device, which has the following beneficial effects:

[0016] 1. The steel ruler automatic calibration device, through the arrangement of a horizontal plate, an electric hydraulic push rod, a fixed rod, a lifting block, a positioning slide block, a connecting rod, a supporting rod, a limit clamp and a standard ruler, enables the steel ruler automatic calibration device to conveniently limit the position of the steel ruler and avoid the position of the steel ruler from being offset. By placing the steel ruler to be tested on the L-shaped adjustment plate, through the cooperation of the positioning slide block and the connecting rod, it is convenient for the limit clamp block to press down the steel ruler to be tested, so as to conveniently limit the position of the steel ruler, thereby achieving the purpose of improving practicality.

[0017] 2. The steel ruler automatic calibration device, through the arrangement of the first servo motor, the gear, the rack rod, the matching block and the bar slider, enables the steel ruler automatic calibration device to conveniently adjust the position of the zero scale line of the steel ruler to be tested, ensuring the effect of aligning with the zero scale line of the standard ruler. Through the cooperation of the gear and the rack rod, the position of the zero scale line of the steel ruler to be tested placed on the L-shaped adjustment plate is conveniently adjusted to align it with the zero scale line of the standard ruler, thereby achieving the purpose of improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0020] Figure 3 It is a structural schematic diagram of the utility model in front view section;

[0021] Figure 4 It is a schematic diagram of the structure of the utility model in a top view;

[0022] Figure 5 It is a schematic structural diagram of the side cross-section of the utility model.

[0023] In the figure: 1. bottom plate; 2. L-shaped adjustment plate; 3. cavity base; 4. support plate; 5. cross plate; 6. electric hydraulic push rod; 7. fixing rod; 8. lifting block; 9. positioning slider; 10. connecting rod; 11. support rod; 12. limit pressure block; 13. standard ruler; 14. first servo motor; 15. gear; 16. rack rod; 17. matching block; 18. strip slider; 19. rectangular frame; 20. second servo motor; 21. threaded rod; 22. threaded ring block; 23. rectangular slider; 24. calibration camera. DETAILED DESCRIPTION

[0024] 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.

[0025] Example 1

[0026] See also Figures 1 to 5The utility model provides a technical solution: an automatic calibration device for a steel ruler, comprising a bottom plate 1 and an L-shaped adjustment plate 2, the bottom of the L-shaped adjustment plate 2 is fixedly connected to the top of the matching block 17, and the position of the L-shaped adjustment plate 2 is higher than the position of the cavity base 3, the top of the bottom plate 1 is respectively installed with a cavity base 3 and a support plate 4, the interior of the cavity base 3 is provided with a strip slide groove with the front-to-back direction as the depth direction and the left-to-right direction as the length direction, the end of the strip slide block 18 is located inside the strip slide groove, and the strip slide block 18 can slide along the length direction of the strip slide groove, a transverse plate 5 is installed in front of the L-shaped adjustment plate 2, and an electric hydraulic push rod 6 and a fixed rod 7 are respectively installed on the top of the transverse plate 5, and the movable end of the electric hydraulic push rod 6 is installed There is a lifting block 8, and positioning sliders 9 are installed on both sides of the lifting block 8. Both sides of the fixed rod 7 are rotatably connected with connecting rods 10 through shaft rods. One side of the connecting rod 10 is provided with a positioning slide groove with the left and right direction as the depth direction and the front and back direction as the length direction. The end of the positioning slider 9 is located inside the positioning slide groove, and the positioning slider 9 can slide along the length direction of the positioning slide groove. A support rod 11 is installed at the end of the connecting rod 10, and a limiting pressure block 12 is installed at the end of the support rod 11 away from the connecting rod 10. The position of the limiting pressure block 12 corresponds to the position of the L-shaped adjustment plate 2. Through holes are opened on both sides of the cavity base 3, and the position of the rack rod 16 corresponds to the position of the through holes. A standard ruler 13 is installed on the top of the cavity base 3.

[0027] When in use, the steel ruler to be calibrated and tested is placed on the L-shaped adjustment plate 2, and the standard ruler 13 is parallel to the L-shaped adjustment plate 2, so that the steel ruler to be calibrated and tested is in contact with the inner wall of the L-shaped adjustment plate 2, and the steel ruler to be calibrated and tested is parallel to the standard ruler 13. When limiting the position of the steel ruler to be calibrated and tested, the movable end of the electric hydraulic push rod 6 extends out, so that the lifting block 8 drives the positioning slider 9 to move, and the end of the positioning slider 9 is located inside the positioning slide groove. The movement of the positioning slider 9 drives the connecting rod 10 to rotate, and the support rod 11 drives the limit pressure block 12 to move in an arc trajectory, so that the limit pressure block 12 presses down to limit the position of the steel ruler to be calibrated and tested, thereby avoiding the position of the steel ruler to be calibrated and tested from being offset, avoiding affecting the accuracy of the calibration, and improving practicality.

[0028] Example 2

[0029] See also Figures 1 to 5The utility model provides a technical solution: an automatic calibration device for a steel ruler, a first servo motor 14 is installed inside the cavity base 3, a gear 15 with the same center as the axis of the output end of the first servo motor 14 is installed at the output end of the first servo motor 14, the gear 15 is meshed with a rack rod 16 through teeth, a matching block 17 is installed on the top of the rack rod 16, a strip slider 18 is installed in front and back of the rack rod 16, a rectangular frame 19 is installed on the inner top wall of the support plate 4, the inner front wall and the inner rear wall of the rectangular frame 19 are both provided with a rectangular slide groove with the front-to-back direction as the depth direction and the left-to-right direction as the length direction, the end of the rectangular slide groove 23 is located inside the rectangular slide groove, the rectangular slide groove 23 can slide along the length direction of the rectangular slide groove, the rectangular frame A second servo motor 20 is installed on one side of 19, and a threaded rod 21 with the same center as the axis of the output end of the second servo motor 20 is installed at the output end of the second servo motor 20. The threaded rod 21 is rotatably connected to the inner wall of the rectangular frame 19 through a bearing. The electric hydraulic push rod 6, the first servo motor 14, the second servo motor 20 and the calibration camera 24 are all electrically connected to the external power supply through wires. The outer surface of the threaded rod 21 is transmission-connected with a threaded ring block 22, and rectangular sliders 23 are installed in front and back of the threaded ring block 22. A calibration camera 24 is installed at the bottom of the threaded ring block 22, and the position of the calibration camera 24 corresponds to the position of the standard ruler 13 and the L-shaped adjustment plate 2, respectively, and the L-shaped adjustment plate 2 is parallel to the standard ruler 13.

[0030] When in use, when adjusting the position of the zero scale line of the steel ruler to be calibrated and tested, the first servo motor 14 drives the gear 15 to rotate, the gear 15 is meshed with the rack rod 16, and the end of the strip slider 18 is located inside the strip slide groove, so that the rack rod 16 drives the strip slider 18, the matching block 17 and the L-shaped adjustment plate 2 to move, so as to facilitate the adjustment of the position of the steel ruler to be calibrated and tested, so that the zero scale line of the steel ruler to be calibrated and tested is aligned with the zero scale line of the standard ruler 13. During calibration and testing, the calibration camera 24 is used to photograph the scale calibration of the steel ruler to be calibrated and the standard ruler 13, and the second servo motor 20 drives the threaded rod 21 to rotate, the threaded rod 21 is transmission-connected to the threaded ring block 22, and the end of the rectangular slider 23 is located inside the rectangular slide groove, so that the threaded ring block 22 drives the rectangular slider 23 and the calibration camera 24 to move, thereby realizing the calibration of the steel ruler.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic calibration device for a steel ruler, comprising a base plate and an L-shaped adjustment plate, characterized in that: A cavity base and a support plate are respectively installed on the top of the bottom plate, a cross plate is installed in front of the L-shaped adjustment plate, an electric hydraulic push rod and a fixed rod are respectively installed on the top of the cross plate, a lifting block is installed on the movable end of the electric hydraulic push rod, positioning sliders are installed on both sides of the lifting block, connecting rods are rotatably connected on both sides of the fixed rod through shaft rods, a support rod is installed on the end of the connecting rod, and a limited pressure block is installed on the end of the support rod away from the connecting rod, a standard ruler is installed on the top of the cavity base, a first servo motor is installed inside the cavity base, and a servo motor connected to the first servo motor is installed on the output end. A gear with the same axis as the output end of a servo motor is provided, the gear is meshed with a rack rod through teeth, a matching block is installed on the top of the rack rod, bar sliders are installed in front and back of the rack rod, a rectangular frame is installed on the inner top wall of the support plate, a second servo motor is installed on one side of the rectangular frame, a threaded rod with the same axis as the output end of the second servo motor is installed on the output end of the second servo motor, a threaded ring block is transmission-connected on the outer surface of the threaded rod, rectangular sliders are installed in front and back of the threaded ring block, and a calibration camera is installed at the bottom of the threaded ring block.

2. The automatic calibration device for a steel ruler according to claim 1, characterized in that: A positioning slide groove is provided on one side of the connecting rod with the left-right direction as the depth direction and the front-back direction as the length direction. The end of the positioning slide block is located inside the positioning slide groove, and the positioning slide block can slide along the length direction of the positioning slide groove.

3. The automatic calibration device for a steel ruler according to claim 1, characterized in that: The bottom of the L-shaped adjustment plate is fixedly connected to the top of the matching block, and the position of the L-shaped adjustment plate is higher than the position of the cavity base.

4. The automatic calibration device for a steel ruler according to claim 1, characterized in that: A strip slide groove is provided inside the cavity base with the front-to-back direction as the depth direction and the left-to-right direction as the length direction. The end of the strip slide block is located inside the strip slide groove, and the strip slide block can slide along the length direction of the strip slide groove.

5. The automatic calibration device for a steel ruler according to claim 1, characterized in that: The threaded rod is rotatably connected to the inner wall of the rectangular frame through a bearing, and the electric hydraulic push rod, the first servo motor, the second servo motor and the verification camera are all electrically connected to an external power source through wires.

6. The automatic calibration device for a steel ruler according to claim 1, characterized in that: The inner front wall and the inner rear wall of the rectangular frame are both provided with rectangular slide grooves with the front-to-back direction as the depth direction and the left-to-right direction as the length direction. The end of the rectangular slider is located inside the rectangular slide groove, and the rectangular slider can slide along the length direction of the rectangular slide groove.

7. The automatic calibration device for a steel ruler according to claim 1, characterized in that: The position of the calibration camera corresponds to the position of the standard ruler and the L-shaped adjustment plate, and the L-shaped adjustment plate is parallel to the standard ruler.

8. The automatic calibration device for a steel ruler according to claim 1, characterized in that: The position of the limiting pressure block corresponds to the position of the L-shaped adjustment plate, through holes are provided on both sides of the cavity base, and the position of the rack rod corresponds to the position of the through holes.

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