Grating ruler calibration device

Abstract

The utility model relates to the technical field of grating rulers, in particular to a grating ruler calibration device which comprises a calibration table, the calibration table comprises a static equipment base and a dynamic installation base, the dynamic installation base is horizontally arranged on one side of the static equipment base, and the dynamic installation base and the static equipment base are integrally formed. And a moving table is mounted on the dynamic mounting seat and is horizontally and slidably connected with the dynamic mounting seat. The calibration table is designed to be of a structure in which the static equipment base and the dynamic mounting base are matched, so that a device required by calibration can be fixedly mounted through the static equipment base during use, the moving table is mounted through the dynamic mounting base, and meanwhile, a clamping assembly is mounted on the moving table, so that the device is convenient to use. The total reflection prism can be conveniently clamped and fixed through the clamping assembly during use.

Description

TECHNICAL FIELD

[0001] The utility model relates to grating ruler technical field, especially relate to a grating ruler calibration device. BACKGROUND

[0002] Grating ruler is a kind of sensor for accurately measuring displacement, is widely used in numerical control machine tool, measuring instrument and other equipment needing high-precision position feedback control, it works based on optical principle, determines position by reading the dense line on glass or metal ruler.Grating ruler is widely used in various precision machining and measuring equipment as a kind of high-precision measuring tool.In order to ensure the measurement accuracy of grating ruler, it needs to be calibrated regularly.

[0003] The existing Chinese patent with the publication number CN108801158B discloses a grating ruler calibration device, including motion platform and measuring device, motion platform is in closed microenvironment area, measuring device is set on motion platform;Measuring device includes bearing table;4 reading heads are arranged on bearing table, each reading head is at the vertex of a quadrilateral respectively;A plane grating is arranged above each reading head;Each of the outer side of the opposite two side faces of bearing table is provided with a second reflecting mirror, and the fourth reflecting mirror is formed by the second plane extension.

[0004] For the related technology in the above, it is found that laser interferometer measurement is needed in grating ruler calibration process, and different states in calibration process are controlled by moving prism, and the displacement speed and displacement amount of prism are calculated by cooperating with laser interferometer counting card, so the movement and installation stability of moving prism will directly affect the calibration effect.

[0005] The motion platform stability of existing grating ruler calibration device is poor, and it is easy to shake in the movement process, which affects the calibration accuracy, and the clamping of clamping assembly to total reflection prism is not stable enough, which may cause prism displacement in calibration process. UTILITY MODEL CONTENTS

[0006] The utility model solves the problems in the related art, and proposes a grating ruler calibration device.

[0007] To solve the above technical problems, the utility model is realized by the following technical schemes:

[0008] The utility model provides a grating ruler calibration device, including calibration platform, the calibration platform includes static equipment seat and dynamic mounting seat, the dynamic mounting seat is horizontally arranged in static equipment seat one side, and dynamic mounting seat is integrally formed with static equipment seat, motion platform is installed on the dynamic mounting seat, the motion platform is connected with dynamic mounting seat horizontal sliding, and the clamping assembly is installed on the motion platform, the clamping assembly is clamped and fixed with total reflection prism, the lower end surface of motion platform is fixedly installed with the stabilizing seat, the lower end surface of static equipment seat is installed with the drive part that drives stabilizing seat moves.

[0009] As a preferred scheme, the static equipment seat comprises a main seat plate and a positioning frame for mounting the drive part, the positioning frame is installed on the lower end surface of the main seat plate, and the positioning frame is fixedly connected with the main seat plate.

[0010] As a preferred scheme, the dynamic mounting seat comprises a secondary seat plate and a limiting plate, the secondary seat plate is provided with a guide sliding groove for mounting the motion platform, the limiting plate is fixedly installed on the outer side surface of the secondary seat plate, and the limiting plate is further provided with a bent inner plate matched with the guide sliding groove, and the inner side surface of the bent inner plate is further fixedly installed with a reinforcing sleeve.

[0011] As a preferred scheme, the motion platform comprises an equipment pedestal and a connecting vertical plate, the connecting vertical plate is installed on the lower end surface of the equipment pedestal, and the connecting vertical plate is integrally formed with the equipment pedestal, and a horizontal bubble instrument is further fixedly installed on the upper end surface of the equipment pedestal.

[0012] As a preferred scheme, the equipment pedestal comprises a triangular pressing block and a guide bent plate for mounting the clamping assembly, the guide bent plate is arranged on the upper end surface of the triangular pressing block, and the guide bent plate is integrally formed with the triangular pressing block.

[0013] As a preferred scheme, the clamping assembly comprises a double-headed screw rod, a clamping plate and a hand wheel, the middle part of the double-headed screw rod is rotatably installed on the guide bent plate, the clamping plate is threadedly connected at both ends of the double-headed screw rod, and the hand wheel is fixedly installed at the outer end of the double-headed screw rod.

[0014] As a preferred scheme, the stabilizing seat comprises an inverted triangular seat and a threaded pipe, the inverted triangular seat is clamped and fixed at the lower end of the connecting vertical plate, and the threaded pipe is integrally formed on the middle part of the lower end surface of the inverted triangular seat.

[0015] As a preferred scheme, the drive part comprises a motor and a threaded rod matched with the threaded pipe, the motor is fixedly installed in the positioning frame, one end of the threaded rod is connected to the output end of the motor, and the other end of the threaded rod is inserted into the reinforcing sleeve through the threaded pipe.

[0016] Compared with the prior art, the application has the beneficial effects that: the calibration table is designed as a structure matched with a static equipment seat and a dynamic mounting seat, so that the device required for calibration can be fixed by the static equipment seat during use, and the motion table can be installed by the dynamic mounting seat, and the total reflection prism can be clamped and fixed by the clamping assembly during use, so that the total reflection prism of different sizes can be fixed, the stable clamping of the total reflection prism is ensured, and the motion table cooperates with the stability seat to ensure stable movement during calibration. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the overall structure schematic diagram of the application;

[0018] Figure 2 is Figure 1 the front view of the device shown in the figure;

[0019] Figure 3 is the three-dimensional view of the motion table, clamping assembly and stability seat matched in the embodiment of the application;

[0020] Figure 4 is the front view of the device shown in the figure; Figure 3

[0021] Figure 5 is the side view of the device shown in the figure; Figure 3

[0022] Figure 6 is the three-dimensional view of the limiting plate in the embodiment of the application.

[0023] In the figure: 1, calibration table; 11, static equipment seat; 111, main seat plate; 112, positioning frame; 12, dynamic mounting seat; 121, auxiliary seat plate; 122, limiting plate; 123, guide sliding groove; 124, bent inner plate; 125, reinforcing sleeve; 2, motion table; 21, equipment table; 211, triangular pressing block; 212, guide bent plate; 22, connecting vertical plate; 23, horizontal bubble instrument; 3, clamping assembly; 31, double-head screw; 32, clamping plate; 33, hand wheel; 4, total reflection prism; 5, stability seat; 51, inverted triangular seat; 52, threaded pipe; 6, driving piece; 61, motor; 62, threaded rod. DETAILED DESCRIPTION

[0024] ​​The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is merely illustrative in nature and is in no way limiting on the application and its applications or uses. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of the present application.

[0025] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0026] The relative arrangement of components and steps, numerical expressions, and numerical values set forth in the embodiments are not intended to limit the scope of the present application unless specifically stated otherwise. At the same time, it should be understood that the sizes of the various parts shown in the drawings are not drawn in proportion to the actual proportions. The techniques, methods and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but under appropriate circumstances, the techniques, methods and devices should be considered as part of the authorized description. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of the example embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0027] In the description of the present application, it should be understood that the orientation words such as "front, rear, upper, lower, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and in the absence of contrary statements, these orientation words do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component.

[0028] For the purposes of this description, spatially relative terms, such as "above", "below", "up", "down", "between", "within", "left", "right", "front", "back", "upper", "lower", "horizontal", "vertical", "above", "below", "up", "down", "top", "bottom", "side", "end", etc., are intended to describe the orientation of one device or feature relative to another device or feature as illustrated in the figures. The spatially relative terms are intended to encompass different orientations of the devices in use or operation in addition to the orientations depicted in the figures. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. For example, if a device in the figures is turned over, so that the device that is described as being on the "top" side of other devices or features would now be oriented upside down and the

[0029] In addition, it should be noted that the use of "first", "second", and the like words of distinction do not have a special meaning, and are only used to distinguish corresponding parts, and therefore cannot be understood as limiting the scope of protection of the utility model.

[0030] Referring to Figure 1 , Figure 2 and Figure 3 , a grating ruler calibration device, comprising a calibration table 1, the calibration table 1 includes static equipment seat 11 and dynamic mounting seat 12, dynamic mounting seat 12 is horizontally arranged at one side of static equipment seat 11, and dynamic mounting seat 12 is integrally formed with static equipment seat 11, and the motion table 2 is installed on the dynamic mounting seat 12, the motion table 2 is horizontally slidably connected with the dynamic mounting seat 12, and the clamping assembly 3 is installed on the motion table 2, the total reflection prism 4 is clamped and fixed in the clamping assembly 3, the lower end surface of the motion table 2 is fixedly installed with a stability seat 5, and the lower end surface of the static equipment seat 11 is installed with a driving part 6 for driving the stability seat 5 to move. The calibration table 1 is integrally formed with static equipment seat 11 and dynamic mounting seat 12, which enhances the overall structural strength and stability. The static equipment seat 11 is arranged to fixedly install laser heads, fixed prisms, beam splitters, photoelectric detection devices and counting cards and the like, and the motion table 2 is horizontally slidably connected with the dynamic mounting seat 12, so that the total reflection prism 4 can be accurately moved in the horizontal direction, which provides a basis for grating ruler calibration. The stability seat 5 and the driving part 6 are arranged to ensure the stability of the motion table 2 and the power source, and improve the reliability of the calibration process.

[0031] Referring to Figure 2 and Figure 6As shown, the static device seat 11 includes a main seat plate 111 and a positioning frame 112 for mounting the driving member 6, the positioning frame 112 is mounted on the lower end face of the main seat plate 111, and the positioning frame 112 is fixedly connected with the main seat plate 111. The positioning frame 112 of the static device seat 11 provides a stable mounting position for the driving member 6, ensuring that the driving member 6 does not shake or displace during operation, thereby ensuring the stability and accuracy of the driving. The dynamic mounting seat 12 includes a secondary seat plate 121 and a limiting plate 122, the secondary seat plate 121 is provided with a guide sliding groove 123 for mounting the motion table 2, the limiting plate 122 is fixedly installed on the outer side face of the secondary seat plate 121, and the limiting plate 122 is further provided with a bent inner plate 124 matched with the guide sliding groove 123, and the inner side face of the bent inner plate 124 is further fixedly installed with a reinforcing sleeve 125. The guide sliding groove 123 of the dynamic mounting seat 12 provides accurate guidance for the sliding of the motion table 2, and the limiting plate 122 and the bent inner plate 124 limit the movement range of the motion table 2 to prevent it from derailing. The reinforcing sleeve 125 enhances the stability of the structure, making the motion table 2 move more smoothly.

[0032] Referring to Figure 3 , Figure 4 and Figure 5 , the motion table 2 includes a device table seat 21 and a connecting vertical plate 22, the connecting vertical plate 22 is installed on the lower end face of the device table seat 21, and the connecting vertical plate 22 is integrally formed with the device table seat 21, and the upper end face of the device table seat 21 is further fixedly installed with a horizontal bubble instrument 23. The horizontal bubble instrument 23 of the motion table 2 can detect the levelness of the motion table 2 in real time, and the operator can adjust according to the display of the horizontal bubble instrument 23 to ensure that the motion table 2 is in a horizontal state, thereby improving the accuracy of the grating ruler calibration. The device table seat 21 includes a triangular pressing block 211 and a guide bent plate 212 for mounting the clamping assembly 3, the guide bent plate 212 is arranged on the upper end face of the triangular pressing block 211, and the guide bent plate 212 is integrally formed with the triangular pressing block 211. The triangular pressing block 211 of the device table seat 21 enhances the structural strength, and the guide bent plate 212 provides guidance for the installation and movement of the clamping assembly 3, so that the clamping assembly 3 can accurately clamp the total reflection prism 4, ensuring the stability of the prism installation.

[0033] Referring to Figure 3 and Figure 4As shown, the clamping assembly 3 includes a double-headed screw 31, clamping plates 32 and a hand wheel 33, the middle part of the double-headed screw 31 is rotatably installed on the guide bent plate 212, the clamping plates 32 are threadedly connected at the two ends of the double-headed screw 31, and the hand wheel 33 is fixedly installed at the outer end of the double-headed screw 31. The clamping assembly 3 drives the double-headed screw 31 to rotate by rotating the hand wheel 33, so that the clamping plates 32 move towards or away from each other, thereby achieving stable clamping of the total reflection prism 4. This clamping method is simple to operate, and can be adjusted according to the size of the prism, thereby improving the universality and stability of clamping.

[0034] Referring to Figure 3 , Figure 4 and Figure 5 As shown, the stability seat 5 includes an inverted triangular seat 51 and a threaded tube 52, the inverted triangular seat 51 is clamped and fixed at the lower end of the connecting vertical plate 22, and the threaded tube 52 is integrally formed at the middle part of the lower end surface of the inverted triangular seat 51. The design of the inverted triangular seat 51 of the stability seat 5 improves the stability, the threaded tube 52 cooperates with the threaded rod 62 of the driving member 6, thereby achieving smooth movement of the movement platform 2 and reducing shaking and deviation during movement.

[0035] Referring to Figure 2 As shown, the driving member 6 includes a motor 61 and a threaded rod 62 cooperating with the threaded tube 52, the motor 61 is fixedly installed in the positioning frame 112, one end of the threaded rod 62 is connected to the output end of the motor 61, and the other end of the threaded rod 62 penetrates through the threaded tube 52 and is inserted into the reinforced sleeve 125. The driving member 6 drives the threaded rod 62 to rotate by using the motor 61, thereby driving the stability seat 5 and the movement platform 2 to move through the threaded tube 52. This driving method is stable and reliable, can accurately control the movement distance and speed of the movement platform 2, and improves the accuracy of the grating ruler calibration.

[0036] In the actual calibration process, when the position of the total reflection prism 4 needs to be moved, the power supply of the motor 61 is first turned on, the motor 61 is started, and the motor 61 drives the threaded rod 62 to rotate. The threaded rod 62 rotates to drive the stability seat 5 and the movement platform 2 to move horizontally in the guide chute 123. During the movement, the display of the horizontal bubble instrument 23 is observed, and if the movement platform 2 is not horizontal, corresponding adjustment is made. The total reflection prism 4 moves with the movement platform 2, and the grating ruler is calibrated. After calibration is completed, the motor 61 is turned off, the hand wheel 33 is rotated, the clamping plates 32 are moved away from each other, and the total reflection prism 4 is removed.

[0037] The above is the preferred embodiment of the present application, and the person skilled in the art of the present application can also make changes and modifications to the above embodiment, therefore, the present application is not limited to the above specific embodiments, and any obvious improvement, replacement or modification made by the person skilled in the art on the basis of the present application shall fall within the protection scope of the present application.

Claims

1. A grating ruler calibration device comprising a calibration stage (1), characterized in that: The calibration platform (1) comprises a static device base (11) and a dynamic mounting base (12), the dynamic mounting base (12) is horizontally arranged on one side of the static device base (11), and the dynamic mounting base (12) is integrally formed with the static device base (11), a moving platform (2) is mounted on the dynamic mounting base (12), the moving platform (2) is horizontally and slidingly connected with the dynamic mounting base (12), a clamping assembly (3) is mounted on the moving platform (2), a total reflection prism (4) is clamped and fixed in the clamping assembly (3), a stability base (5) is fixedly mounted on the lower end surface of the moving platform (2), and a driving member (6) for driving the stability base (5) to move is mounted on the lower end surface of the static device base (11).

2. A grating ruler calibration device according to claim 1, characterized in that: The static device base (11) comprises a main base plate (111) and a positioning frame (112) for mounting the driving member (6), the positioning frame (112) is mounted on the lower end surface of the main base plate (111), and the positioning frame (112) is fixedly connected with the main base plate (111).

3. A grating ruler calibration device according to claim 2, wherein: The dynamic mounting base (12) comprises a secondary base plate (121) and a limiting plate (122), the secondary base plate (121) is provided with a guide sliding groove (123) for mounting the moving platform (2), the limiting plate (122) is fixedly mounted on the outer side surface of the secondary base plate (121), and the limiting plate (122) is further provided with a bent inner plate (124) matched with the guide sliding groove (123), and a reinforcing sleeve (125) is fixedly mounted on the inner side surface of the bent inner plate (124).

4. A grating ruler calibration device according to claim 3, wherein: The moving platform (2) comprises a device base (21) and a connecting vertical plate (22), the connecting vertical plate (22) is mounted on the lower end surface of the device base (21), and the connecting vertical plate (22) is integrally formed with the device base (21), and a horizontal bubble instrument (23) is fixedly mounted on the upper end surface of the device base (21).

5. A grating ruler calibration device according to claim 4, wherein: The device base (21) comprises a triangular pressing block (211) and a guide bent plate (212) for mounting the clamping assembly (3), the guide bent plate (212) is arranged on the upper end surface of the triangular pressing block (211), and the guide bent plate (212) is integrally formed with the triangular pressing block (211).

6. A grating ruler calibration device according to claim 5, wherein: The clamping assembly (3) comprises a double-head screw rod (31), a clamping plate (32) and a hand wheel (33), the middle part of the double-head screw rod (31) is rotatably mounted on the guide bent plate (212), the clamping plate (32) is threadedly connected at both ends of the double-head screw rod (31), and the hand wheel (33) is fixedly mounted on the outer end of the double-head screw rod (31).

7. A grating ruler calibration device according to claim 6, wherein: The stability base (5) comprises an inverted triangular base (51) and a threaded pipe (52), the inverted triangular base (51) is clamped and fixed on the lower end of the connecting vertical plate (22), and the threaded pipe (52) is integrally formed on the middle part of the lower end surface of the inverted triangular base (51).

8. A grating ruler calibration device according to claim 7, characterised in that: The driving member (6) comprises a motor (61) and a threaded rod (62) matched with the threaded tube (52), the motor (61) is fixedly installed in the positioning frame (112), one end of the threaded rod (62) is connected to the output end of the motor (61), and the other end of the threaded rod (62) is inserted into the reinforcing sleeve (125) through the threaded tube (52).

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