Mounting structure of grating reading head

Abstract

The utility model discloses an installation structure of a grating reading head. The installation structure comprises a support frame, an adjusting plate, a substrate and two adjusting bolts. A mounting plane is formed at the upper end of the supporting frame and used for mounting and fixing a grating reading head, the lower end of the supporting frame is fixedly connected with the adjusting plate, jackscrew holes are formed in the four corners of the adjusting plate respectively, jackscrews are arranged in the jackscrew holes, and the jackscrews are screwed into the jackscrew holes from the upper portion of the adjusting plate and abut against the base plate below the adjusting plate. Two long round holes which are arranged in parallel at intervals are formed in the middle of the adjusting plate, adjusting screw holes are correspondingly formed in the portions, below the long round holes, of the base plate, adjusting bolts penetrate through the long round holes to be screwed into the adjusting screw holes, and the width of the long round holes is larger than the diameter of the adjusting bolts by a preset size. The mounting structure can adjust the grating reading head in five dimensions, and has the advantages of high rigidity, simple and compact structure, small size and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of coordinate measurement, and particularly relates to an installation structure of a grating reading head. Background Art

[0002] The grating ruler, also known as the grating ruler displacement sensor or grating ruler sensor, is a measurement feedback device that works by utilizing the optical principle of the grating. It is often used in the closed-loop servo system of CNC machine tools and can be used to detect linear displacement or angular displacement. It is specifically composed of two parts: the scale grating and the grating reading head.

[0003] Since the measurement accuracy of the grating scale is generally at the nanometer and micron level, and the relative position between the grating scale reading head and the scale grating needs to be within a tiny range limited by displacement in two directions and angles in three directions to work properly, it is necessary to have extremely high assembly accuracy between the scale grating and the grating reading head; if it is only achieved by parts processing and assembly, the cost is high and the reliability is low, so the grating scale reading head needs to be able to adjust in multiple dimensions when installed and fixed to achieve precise assembly with the scale grating. In addition, the poor rigidity of the grating reading head mounting seat will make it sensitive to external disturbances, thereby affecting the measurement results of the grating scale, so the grating reading head mounting seat is not only required to be adjustable in five degrees of freedom, but also requires high structural rigidity. Utility Model Content

[0004] In view of the above problems, the utility model discloses a mounting structure of a grating reading head to overcome the above problems or at least partially solve the above problems.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model discloses a mounting structure of a grating reading head, comprising a supporting frame, an adjusting plate, a base plate and two adjusting bolts;

[0007] A mounting plane is formed at the upper end of the support frame for installing and fixing the grating reading head. The lower end of the support frame is fixedly connected to the adjustment plate. Top screw holes are respectively opened at the four corners of the adjustment plate. A top screw is provided in each of the top screw holes. The top screw is screwed into the top screw hole from the top of the adjustment plate and abuts against the base plate below the adjustment plate. Two oblong holes spaced apart and arranged in parallel are opened in the middle position of the adjustment plate. An adjusting screw hole is correspondingly opened on the base plate below each of the oblong holes. The adjusting bolt passes through the oblong hole and is screwed into the adjusting screw hole. The width of the oblong hole is larger than the diameter of the adjusting bolt by a preset size.

[0008] Furthermore, the preset size is 2 mm to 4 mm.

[0009] Furthermore, the support frame is in the shape of a square arch.

[0010] Furthermore, the support frame and the adjustment plate are an integrated structure.

[0011] Furthermore, a gasket is provided between the adjusting bolt and the adjusting plate, and the thickness of the gasket is 0.8 mm to 1.2 mm.

[0012] Furthermore, a positioning groove is formed on the installation plane of the support frame, and the positioning groove is used for positioning the grating reading head during installation.

[0013] Furthermore, a fixing screw hole, a fixing buckle or an adhesive sticker for fixing the grating reading head is provided on the mounting plane of the support frame.

[0014] Furthermore, the support frame is provided with weight-reducing holes.

[0015] Furthermore, the width of the support frame is consistent with the width of the grating reading head.

[0016] Furthermore, the support frame and the adjustment plate are made of stainless steel, and chamfers are formed at the corners of the support frame and the adjustment plate.

[0017] The advantages and beneficial effects of the utility model are:

[0018] In the installation structure of the utility model, by arranging a top screw, an oblong hole and an adjusting bolt on the adjusting plate, the support frame on the adjusting plate can drive the grating reading head to adjust in five dimensions, and the installation structure has the advantages of high rigidity, simple and compact structure and small size. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not considered to be limiting of the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0020] Figure 1 A three-dimensional structural diagram of the installation structure of the grating reading head in one embodiment of the utility model;

[0021] Figure 2 It is a front view of the installation structure of the grating reading head in one embodiment of the utility model;

[0022] Figure 3 for Figure 2 Sectional view at AA in the middle;

[0023] Figure 4 for Figure 2 Cross-section at the middle BB;

[0024] Figure 5 It is a top view of the installation structure of the grating reading head in one embodiment of the utility model.

[0025] In the figure: 1. Support frame; 2. Adjustment plate; 3. Base plate; 4. Adjustment bolt; 5. Grating reading head; 6. Top screw; 7. Long round hole; 8. Adjustment screw hole; 9. Gasket; 10. Fixing bolt. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in combination with the specific embodiments of the utility model and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] The technical solutions provided by various embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0028] In one embodiment of the present invention, a mounting structure of a grating reading head is provided, such as Figures 1 to 5 As shown, the installation structure includes a support frame 1, an adjustment plate 2, a base plate 3 and two adjustment bolts 4. The base plate can be a housing of the instrument.

[0029] Specifically, a mounting plane is formed at the upper end of the support frame 1 for mounting and fixing the grating reading head 5, and the lower end of the support frame 1 is fixedly connected to the adjustment plate 2. Top screw holes are respectively opened at the four corners of the adjustment plate 2, and top screws 6 are arranged in each top screw hole. The top screw 6 is screwed into the top screw hole from the top of the adjustment plate 2 and abuts against the substrate 3 below the adjustment plate 2. Two oblong holes 7 are opened in the middle of the adjustment plate 2 and arranged in parallel. The two oblong holes 7 are arranged side by side, and the length direction of the oblong holes 7 is perpendicular to the length direction of the grating reading head 5. Adjustment screw holes 8 are correspondingly opened on the substrate 3 below each oblong hole 7. The adjustment bolt 4 passes through the oblong hole 7 and is screwed into the adjustment screw hole 8. The width of the oblong hole 7 is larger than the diameter of the adjustment bolt 4 by a preset size. When the adjustment bolt 4 is not completely pressed and fixed on the adjustment plate 2, the adjustment plate 2 can be rotated within a certain range on the horizontal plane. Among them, the preset size is 2 mm ~ 4 mm, preferably 3 mm.

[0030] After the installation structure is assembled, the head end of the top screw 6 will press the base plate 3, forming a pushing force for the adjustment plate 2 to move away from the base plate 3, and the end of the adjusting bolt 4 will press the adjustment plate 2 tightly, forming a pulling force for the adjustment plate 2 to move close to the base plate 3, thereby achieving the fixation of the adjustment plate 2 relative to the base plate 3.

[0031] It should be noted that, when the grating reading head 5 is installed, the scale grating is located on one side of the length direction of the grating reading head 5 and is arranged opposite to the grating reading head 5 .

[0032] In this way, by adjusting the depth of the four top screws 6 screwed into the top screw holes, and the depth of the adjusting bolt 4 screwed into the adjusting screw hole 8, the adjustment of the adjustment plate 2 in two rotational directions and the adjustment of the displacement in one height direction can be realized, and then the adjustment of the grating reading head 5 in three dimensions can be realized through the support frame 1; wherein, the adjustment in two rotational directions and the adjustment of the displacement in one height direction are specifically: rotation adjustment along the length direction of the grating reading head 5 on the vertical plane, rotation adjustment along the width direction of the grating reading head 5 on the vertical plane, and displacement adjustment on the vertical plane. By cooperating with the adjusting bolt 4 and the oblong hole 7, the adjustment of the adjustment plate 2 in one rotational direction and the adjustment of the displacement in the horizontal direction can be realized, and then the adjustment of the grating reading head 5 in two dimensions can be realized through the support frame 1; wherein, the adjustment in one rotational direction and the adjustment of the displacement in the horizontal direction are specifically: rotation adjustment on the horizontal plane, translation adjustment along the width direction of the grating reading head 5, that is, the adjustment of the gap between the grating reading head 5 and the scale grating is realized. This installation structure can not only be adjusted in five dimensions, but also has high rigidity due to its structural setting, which can effectively reduce the interference of the external environment on the grating reading head 5 and ensure the accuracy of the grating scale measurement.

[0033] In summary, in the installation structure of the utility model, by arranging the top screw, the oblong hole and the adjusting bolt on the adjusting plate, the support frame on the adjusting plate can drive the grating reading head to adjust in five dimensions, and the installation structure has the advantages of high rigidity, simple and compact structure and small size.

[0034] In this embodiment, if Figure 1 and Figure 2 As shown, the support frame 1 is in the shape of a square arch, thereby improving the rigidity of the installation structure.

[0035] Furthermore, the support frame and the adjustment plate are an integrated structure, which can not only simplify the structural components of the installation structure, making it easier to produce and reducing the manufacturing cost, but also can further improve the structural rigidity of the installation structure.

[0036] In addition, if Figure 1 and Figure 2 As shown, a gasket 9 is provided between the adjusting bolt 4 and the adjusting plate 2, and the thickness of the gasket 9 is 0.8 mm to 1.2 mm, so that the adjusting bolt 4 can firmly and stably press the adjusting plate 2; preferably, the thickness of the gasket 9 is 1 mm.

[0037] In this embodiment, if Figure 1 and Figure 3 As shown, the width of the support frame 1 is consistent with the width of the grating reading head 5, so that the support frame 1 can support the grating reading head 5 more stably and make the grating reading head 5 more beautiful after being installed on the support frame 1. Among them, the size of the support frame can be adjusted according to the specific model of the grating reading head.

[0038] In addition, the support frame and the adjustment plate are made of stainless steel, which makes the installation structure more rigid; Figure 1 As shown, chamfers are formed at the corners of the support frame 1 and the adjustment plate 2, which can prevent the product from being too sharp and cutting the user, and enhance the aesthetics of the installation structure.

[0039] Furthermore, if Figure 2 and Figure 3 As shown, a fixing screw hole for fixing the grating reading head 5 is provided on the mounting plane of the support frame 1, and a fixing bolt 10 is provided in the fixing screw hole, and the grating reading head 5 is fixed to the support frame 1 by the fixing bolt 10. The number of the fixing screw hole and the fixing bolt 10 is preferably two.

[0040] Of course, a fixing buckle or adhesive sticker can also be provided on the mounting plane of the support frame to enable the grating reading head to be clamped or bonded to the support frame. In this way, a support frame with a corresponding connection structure can be provided according to the specific model of the grating reading head, so that the mounting structure has a certain versatility and meets the fixing requirements of different models of grating reading heads.

[0041] In other embodiments, a positioning groove is formed on the mounting plane of the support frame, and the positioning groove is used for positioning the grating reading head during installation, so that the grating reading head can be more accurately installed and fixed on the support frame.

[0042] Furthermore, the support frame is provided with weight-reducing holes, so that the weight is lighter without affecting the structural strength of the installation structure. The position, number and shape of the weight-reducing holes can be set according to specific circumstances.

[0043] The above description is only a specific implementation of the present invention. Under the above teaching of the present invention, those skilled in the art can make other improvements or modifications based on the above embodiments. Those skilled in the art should understand that the above specific description is only to better explain the purpose of the present invention, and the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A mounting structure for a grating reading head, characterized in that: It includes a support frame, an adjustment plate, a base plate and two adjustment bolts; A mounting plane is formed at the upper end of the support frame for installing and fixing the grating reading head. The lower end of the support frame is fixedly connected to the adjustment plate. Top screw holes are respectively opened at the four corners of the adjustment plate. A top screw is provided in each of the top screw holes. The top screw is screwed into the top screw hole from the top of the adjustment plate and abuts against the base plate below the adjustment plate. Two oblong holes spaced apart and arranged in parallel are opened in the middle position of the adjustment plate. An adjusting screw hole is correspondingly opened on the base plate below each of the oblong holes. The adjusting bolt passes through the oblong hole and is screwed into the adjusting screw hole. The width of the oblong hole is larger than the diameter of the adjusting bolt by a preset size.

2. The mounting structure of the grating reading head according to claim 1 is characterized in that: The preset size is 2 mm to 4 mm.

3. The mounting structure of the grating reading head according to claim 1 is characterized in that: The support frame is in the shape of a square arch.

4. The mounting structure of the grating reading head according to claim 1 is characterized in that: The support frame and the adjustment plate are an integrated structure.

5. The mounting structure of the grating reading head according to claim 1 is characterized in that: A gasket is provided between the adjusting bolt and the adjusting plate, and the thickness of the gasket is 0.8 mm to 1.2 mm.

6. The mounting structure of the grating reading head according to claim 1 is characterized in that: A positioning groove is formed on the installation plane of the support frame, and the positioning groove is used for positioning the grating reading head during installation.

7. The mounting structure of the grating reading head according to claim 1 is characterized in that: The mounting plane of the support frame is provided with fixing screw holes, fixing buckles or adhesive stickers for fixing the grating reading head.

8. The mounting structure of the grating reading head according to claim 1 is characterized in that: The support frame is provided with weight-reducing holes.

9. The mounting structure of the grating reading head according to claim 1 is characterized in that: The width of the support frame is consistent with the width of the grating reading head.

10. The mounting structure of the grating reading head according to any one of claims 1 to 9, characterized in that: The support frame and the adjustment plate are made of stainless steel, and chamfers are formed at the corners of the support frame and the adjustment plate.

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