Micro-motion measurement hand wheel

Abstract

The utility model discloses a micro-motion measurement hand wheel, which relates to optical experiment auxiliary equipment and comprises a base, a hand wheel assembly and a sliding table assembly, a hand wheel of the hand wheel assembly is rotatably arranged on the base, and a sliding table of the sliding table assembly is movably arranged on the base; the micro-motion measurement hand wheel further comprises a wedge block assembly. The wedge block assembly is arranged in the axial direction of a hand wheel of the hand wheel assembly, and a wedge block of the wedge block assembly is provided with a wedge surface; a sliding table of the sliding table assembly is in sliding contact with the wedge surface, so that when the hand wheel assembly drives the wedge block assembly to move in the axial direction of the hand wheel, the sliding table can slide in the radial direction of the hand wheel. The device has the advantages of being small in size and high in adjusting precision.

Description

Technical Field

[0001] The utility model relates to optical experiment auxiliary equipment, in particular to a micro-motion measuring hand wheel. Background Art

[0002] In some optical experiments, such as experiments using a Michelson interferometer, it is usually necessary to mount the optical device on a high-precision mobile platform, and to adjust the mobile platform to achieve precise fine-tuning of the optical device. The existing micro-motion measurement handwheel consists of a base and a slide, and the optical device is mounted on the slide via an adjustable angle bracket. The base and the slide are connected by a handwheel, which is rotatably connected to the base through a bearing, and a nut is provided on the handwheel, which is connected to the slide. A circle of evenly distributed scale lines is engraved on the handwheel, and the gap between the scale lines is usually 0.5mm to 1mm. The adjustment accuracy is positively correlated with the number of scale lines on the handwheel. However, although increasing the handwheel diameter can increase the number of scale lines, thereby improving the adjustment accuracy, this will also cause the overall size of the micro-motion measurement handwheel to increase accordingly.

[0003] Therefore, it is urgent to develop a micro-motion measurement handwheel with small size and high adjustment accuracy to meet the needs of precision optical experiments. Utility Model Content

[0004] The utility model aims to solve one of the technical problems in the related art to a certain extent. To this end, the utility model provides a micro-motion measuring hand wheel, which has the advantages of small size and high adjustment accuracy.

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

[0006] A micro-motion measuring handwheel comprises a base, a handwheel assembly and a slide assembly arranged on the base; the handwheel of the handwheel assembly is rotatably arranged on the base, and the slide of the slide assembly is movably arranged on the base; the micro-motion measuring handwheel also comprises a wedge assembly; the wedge assembly is arranged in the axial direction of the handwheel of the handwheel assembly, and the wedge of the wedge assembly has a wedge surface; the slide of the slide assembly is in sliding contact with the wedge surface, so that when the handwheel assembly drives the wedge assembly to move in the axial direction of the handwheel, the slide can slide in the radial direction of the handwheel.

[0007] Optionally, the wedge block assembly includes a base plate and a wedge block arranged on the base plate; the base plate is slidably arranged on the base, and the sliding direction is the same as the axial direction of the handwheel; in the axial direction of the handwheel, the distances between the two sides of the wedge surface on the wedge block and the handwheel axis are not equal.

[0008] Optionally, the wedge block assembly also includes a support plate; the support plate is detachably mounted on the base plate; a positioning groove is provided on the support plate, the wedge block is arranged in the positioning groove, and the side surface of the wedge block opposite to the wedge surface is in contact with the groove wall of the positioning groove.

[0009] Optionally, it also includes a first guiding mechanism; the first guiding mechanism includes a first slide rail arranged on the base and a first slider arranged on the first slide rail; the first slide rail is arranged along the axial direction of the handwheel of the handwheel assembly, and the wedge block assembly is arranged on the first slider.

[0010] Optionally, the angle formed between the wedge surface and the moving direction of the wedge block assembly is 1°-4°.

[0011] Optionally, it further includes a first elastic reset component; the first elastic reset component is arranged between the wedge block component and the base to drive the wedge block component to abut against the telescopic shaft of the handwheel assembly.

[0012] Optionally, it also includes a second elastic reset component; the second elastic reset component is arranged between the slide assembly and the base to drive the slide assembly to abut against the wedge surface.

[0013] Optionally, it also includes a second guiding mechanism; the second guiding mechanism includes a second slide rail arranged on the base and a second slider arranged on the second slide rail; the second slide rail extends radially along the hand wheel, and the slide assembly is arranged on the second slider.

[0014] Optionally, the slide assembly is provided with a sliding end head on a side facing the wedge surface, and the slide assembly is in sliding contact with the wedge surface via the sliding end head.

[0015] Optionally, the wedge block assembly is provided with a wear-resistant part on a side facing the handwheel assembly, and the telescopic shaft of the handwheel assembly abuts against the wear-resistant part.

[0016] Optionally, the wedge is made of quartz.

[0017] These features and advantages of the utility model will be disclosed in detail in the following specific embodiments and drawings. The best implementation or means of the utility model will be fully presented in conjunction with the drawings, but it is not a limitation of the technical solution of the utility model. In addition, these features, elements and components appearing in each of the following texts and drawings are multiple, and are marked with different symbols or numbers for convenience, but all represent components with the same or similar structure or function. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings:

[0019] Figure 1 Schematic diagram of the structure of the micro-motion measurement handwheel (without a protective shell) described in some embodiments.

[0020] Figure 2 Schematic diagram of the structure of the micro-motion measurement handwheel (with a protective shell) described in some embodiments.

[0021] Figure 3 1 is a top view of the micro-motion measurement handwheel (with a protective shell) described in some embodiments.

[0022] Figure 4 for Figure 3 A cross-sectional view of the micro-motion measurement handwheel described in the figure along the A-A direction.

[0023] Figure 5 1 is a top view of the micro-motion measurement handwheel (without a protective shell) described in some embodiments.

[0024] Among them, 100, base; 200, handwheel assembly; 210, telescopic shaft; 300, slide assembly; 310, slide; 320, sliding end; 400, wedge block assembly; 410, bottom plate; 411, wear-resistant part; 420, support plate; 421, positioning groove; 430, wedge block; 431, wedge surface; 500, first guide mechanism; 510, first slide rail; 520, first slider; 600, second guide mechanism; 610, second slide rail; 620, second slider; 700, first elastic reset assembly; 800, second elastic reset assembly. DETAILED DESCRIPTION

[0025] The following is a detailed description of embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments in the implementation manner are intended to be used to explain the present invention and should not be construed as limiting the present invention.

[0026] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the description of the present invention, unless otherwise specified, "plurality" means two or more, and "several" means one or more.

[0029] References to "one embodiment" or "an example" or "an example" in this specification mean that a particular feature, structure, or characteristic described in conjunction with the embodiment itself may be included in at least one embodiment disclosed in the present utility model. The appearance of the phrase "in one embodiment" in various places in the specification does not necessarily refer to the same embodiment.

[0030] Example:

[0031] like Figure 1-5 As shown, a micro-motion measuring handwheel is shown, comprising a base 100, a handwheel assembly 200 and a slide assembly 300 arranged on the base 100, and a wedge assembly 400. The handwheel of the handwheel assembly 200 is rotatably arranged on the base 100. By rotating the handwheel, the telescopic shaft 210 of the handwheel assembly 200 can be extended and retracted by a corresponding length in the axial direction. The wedge assembly 400 is arranged in the axial direction of the handwheel of the handwheel assembly 200 and is located at the end of the telescopic shaft 210. When the telescopic shaft 210 is extended and retracted, the wedge assembly 400 can be driven to move in the axial direction. The slide 310 of the slide assembly 300 is movably arranged on the base 100. The wedge 430 of the wedge assembly 400 has a wedge surface 431, and the wedge surface 431 faces away from the telescopic shaft 210 of the handwheel and faces the slide assembly 300 located on one side of the base 100. One side of the slide 310 of the slide assembly 300 is in sliding contact with the wedge surface 431, so that when the handwheel assembly 200 drives the wedge block assembly 400 to move along the axial direction of the handwheel, the slide 310 can slide along the radial direction of the handwheel.

[0032] By arranging the handwheel assembly 200, the wedge assembly 400 and the slide assembly 300 on the plane of the base 100, and utilizing the wedge surface 431 of the wedge 430 in the wedge assembly 400, the axial displacement of the handwheel assembly 200 is amplified through the wedge surface 431 and converted into the radial displacement of the slide assembly 300. Thus, a handwheel with a smaller diameter is used to increase the adjustment accuracy, and all three are arranged on the plane of the base 100. When the angle-adjustable bracket is erected on the slide assembly 300, the force in the vertical direction will not interfere with the displacement in the horizontal direction.

[0033] In some embodiments, the handwheel assembly 200 includes a sleeve, a handwheel and a telescopic shaft 210. A vertical plate is provided on the base 100, and one end of the sleeve is aligned and fixed with a through hole on the vertical plate, and the through hole faces the base 100. The handwheel is sleeved outside the sleeve and can rotate freely on the sleeve. The telescopic shaft 210 is arranged at the center of the sleeve and is threadedly connected to the sleeve. There is only a circumferential limit between the tail end of the telescopic shaft 210 and the handwheel. A circle of scale lines is provided at the boundary between the handwheel and the sleeve, and an alignment mark line is provided on the sleeve. When the handwheel rotates in one direction (clockwise or counterclockwise), since the handwheel only has a circumferential limit, the telescopic shaft 210 can be driven to rotate, and since the middle part of the telescopic shaft 210 is threadedly connected to the sleeve, it will move axially during the rotation, so that the head end of the telescopic shaft 210, or the length of the through hole deep in the free end will increase accordingly, thereby supporting the wedge block assembly 400 to move axially. The hand wheel assembly 200 is a prior art. In addition to the above structure, other alternatives can be used to control the extension length of the telescopic shaft 210 by rotating the hand wheel. It should be noted that the diameter of the hand wheel should be set to a suitable size so that the outer ring of the hand wheel is large enough to accommodate 100-300 scale lines with a spacing of 0.5mm-1mm.

[0034] In some embodiments, the wedge block assembly 400 includes a base plate 410 and a wedge block 430 disposed on the base plate 410. The base plate 410 is slidably disposed on the base 100, and the sliding direction is the same as the axial direction of the hand wheel. In the axial direction of the hand wheel, the distances between the two sides of the wedge surface 431 on the wedge block 430 and the hand wheel axis are not equal. Specifically, as Figure 5As shown, the y-axis direction in the figure is the same as the axial direction of the handwheel, and the x-axis direction is the radial direction of the handwheel on the plane where the base 100 is located. In the y-axis direction, as the wedge surface 431 moves away from the handwheel assembly 200, the distance from the wedge surface 431 to the axis of the telescopic shaft 210 becomes smaller and smaller, that is, in the axial direction of the handwheel, the distances between the two sides of the wedge surface 431 on the wedge block 430 and the axis of the handwheel have a certain difference, thereby forming an angle C in the figure, and the size of angle C is 1°-4°, preferably 2.290°±2″. By setting the angle of the wedge surface 431, that is, angle C, in this range, the displacement of the wedge block 430 on the y-axis driven by the telescopic shaft 210 can be finally converted into the displacement of the slide 310 on the x-axis through the translation of the wedge surface 431. On the y-axis, the wedge block has a certain length, so that after the wedge block rotates 360 degrees with the handwheel and translates a corresponding displacement, the wedge surface of the wedge block can still be in sliding contact with the slide.

[0035] In some embodiments, the wedge assembly 400 further includes a support plate 420. The support plate 420 is detachably mounted on the base plate 410. A positioning groove 421 is provided on the support plate 420, and the wedge 430 is disposed in the positioning groove 421, and the side surface of the wedge 430 opposite to the wedge surface 431 is in contact with the groove wall of the positioning groove 421. The wedge 430 stands sideways in the positioning groove 421, and the wedge surface 431 extends upward in the vertical direction, and the bottom of the wedge surface 431 is bonded to the groove bottom of the positioning groove 421. The positioning groove 421 is shallow, and the height of the wedge 430 is much greater than the groove depth of the positioning groove 421, so that most of the wedge surface 431 is exposed from the positioning groove 421 and faces away from the telescopic shaft 210 and faces the slide assembly 300.

[0036] In some embodiments, in order to make the movement (sliding) of the wedge assembly 400 on the base 100 more stable and accurate. The micro-motion measurement handwheel also includes a first guide mechanism 500. The first guide mechanism 500 includes a first slide rail 510 provided on the base 100 and a first slider 520 provided on the first slide rail 510. The first slide rail 510 is provided along the axial direction of the handwheel of the handwheel assembly 200, and the wedge assembly 400 is provided on the first slider 520. Specifically, the first slide rail 510 has a certain width, so that the first slider 520 adapted thereto on the first slide rail 510 can provide sufficient installation area for the bottom plate 410, so that the bottom plate 410 can be stably fixed.

[0037] In some embodiments, the micro-motion measurement handwheel also includes a first elastic reset assembly 700. The first elastic reset assembly 700 is arranged between the wedge assembly 400 and the base 100 to drive the wedge assembly 400 to abut against the telescopic shaft 210 of the handwheel assembly 200. For example, the first elastic reset assembly 700 uses a pair of tension springs, which are arranged in parallel, with a certain distance between the two, and the telescopic shaft 210 is located in the middle of the two. One end of the tension spring is fixed to the column at the top of the base plate 410, and the other end of the tension spring is fixed to the vertical plate on one side of the base 100. The extension direction of the tension spring is the same as the axial direction of the telescopic shaft 210. Through a pair of tension springs, the wedge assembly 400 can be kept close to and abut against the end of the telescopic shaft 210 from beginning to end.

[0038] In some embodiments, the micro-motion measuring handwheel further includes a second elastic reset component 800. The second elastic reset member is disposed between the slide assembly 300 and the base 100 to drive the slide assembly 300 to abut against the wedge surface 431. For example, the second elastic reset component 800 uses a spring pin, a fixing frame is provided on the base 100, the housing of the spring pin is fixed on the fixing frame, and the telescopic end abuts against the slide 310. The spring pin and the wedge block 430 are respectively located at two opposite ends of the slide 310, so that the slide 310 and the wedge block 430 can always be in contact with each other through the spring pin.

[0039] In some embodiments, the micro-motion measuring hand wheel further includes a second guide mechanism 600. The second guide mechanism 600 includes a second slide rail 610 disposed on the base 100 and a second slider 620 disposed on the second slide rail 610. The second slide rail 610 extends in the radial direction of the hand wheel, and the slide assembly 300 is disposed on the second slider 620. The slide assembly 300 is guided to move smoothly by the second guide mechanism.

[0040] In some embodiments, the slide assembly 300 is provided with a sliding end 320 on the side facing the wedge surface 431, and the slide assembly 300 is in sliding contact with the wedge surface 431 through the sliding end 320. In addition, in order to improve durability, the wedge block 430 is made of quartz. The sliding end 320 and the wedge block 430 made of quartz material improve wear resistance and increase service life.

[0041] In some embodiments, the wedge assembly 400 is provided with a wear-resistant part 411 on the side facing the handwheel assembly 200, and the telescopic shaft 210 of the handwheel assembly 200 abuts against the wear-resistant part 411. Specifically, a chamfered wear-resistant part 411 is provided on the side of the bottom plate 410 facing the telescopic shaft 210. The wear-resistant part 411 increases the practical life while reducing the influence of wear on the precision.

[0042] In some embodiments, to protect the wedge assembly, the wedge assembly further includes a protective shell covering the bottom plate 410, the wedge 430, the support plate 420 and the first guide mechanism, the protective shell accommodates the bottom plate 410, the wedge 430, the support plate 420 and the first guide mechanism, and the protective shell is fixed to the bottom plate and can move synchronously with the bottom plate. In addition, a plurality of avoidance holes are provided on the protective shell for the telescopic shaft, the tension spring and the sliding end to pass through.

[0043] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present invention shall be included in the scope of the claims.

Claims

1. A micro-motion measuring handwheel, comprising a base, a handwheel assembly and a slide assembly arranged on the base; the handwheel of the handwheel assembly is rotatably arranged on the base, and the slide of the slide assembly is movably arranged on the base; characterized in that: The micro-motion measurement handwheel also includes a wedge assembly; the wedge assembly is arranged in the axial direction of the handwheel of the handwheel assembly, and the wedge of the wedge assembly has a wedge surface; the slide of the slide assembly is in sliding contact with the wedge surface, so that when the handwheel assembly drives the wedge assembly to move in the axial direction of the handwheel, the slide can slide in the radial direction of the handwheel.

2. The micro-motion measuring hand wheel according to claim 1, characterized in that: The wedge block assembly includes a base plate and a wedge block arranged on the base plate; the base plate is slidably arranged on the base, and the sliding direction is the same as the axial direction of the handwheel; in the axial direction of the handwheel, the distances between the two sides of the wedge surface on the wedge block and the handwheel axis are unequal.

3. The micro-motion measuring hand wheel according to claim 2, characterized in that: The wedge block assembly also includes a supporting plate; the supporting plate is detachably mounted on the base plate; a positioning groove is provided on the supporting plate, the wedge block is arranged in the positioning groove, and the side surface of the wedge block opposite to the wedge surface is in contact with the groove wall of the positioning groove.

4. The micro-motion measuring hand wheel according to claim 1, characterized in that: It also includes a first guiding mechanism; the first guiding mechanism includes a first slide rail arranged on the base and a first slider arranged on the first slide rail; the first slide rail is arranged along the axial direction of the handwheel of the handwheel assembly, and the wedge block assembly is arranged on the first slider.

5. The micro-motion measuring hand wheel according to claim 1, characterized in that: The angle formed between the wedge surface and the moving direction of the wedge block assembly is 1°-4°.

6. The micro-motion measuring hand wheel according to claim 1, characterized in that: It also includes a first elastic reset component; the first elastic reset component is arranged between the wedge block component and the base to drive the wedge block component to abut against the telescopic shaft of the hand wheel assembly.

7. The micro-motion measuring hand wheel according to claim 1, characterized in that: It also includes a second elastic reset component; the second elastic reset component is arranged between the slide assembly and the base to drive the slide assembly to abut against the wedge surface.

8. The micro-motion measuring hand wheel according to claim 1, characterized in that: It also includes a second guide mechanism; the second guide mechanism includes a second slide rail arranged on the base and a second slider arranged on the second slide rail; the second slide rail extends radially along the hand wheel, and the slide assembly is arranged on the second slider.

9. The micro-motion measuring handwheel according to any one of claims 1 to 8, characterized in that: The slide assembly is provided with a sliding end head on the side facing the wedge surface, and the slide assembly is in sliding contact with the wedge surface through the sliding end head; or, The wedge block assembly is provided with a wear-resistant part on a side facing the handwheel assembly, and the telescopic shaft of the handwheel assembly abuts against the wear-resistant part.

10. The micro-motion measuring handwheel according to any one of claims 1 to 8, characterized in that: The wedge is made of quartz material.

Images