Translation shaft movement detection device

Abstract

The invention discloses a translation shaft movement detection device, which comprises a horizontal movement mechanism and a vertical movement mechanism which are arranged on a detection platform, and is characterized in that the horizontal movement mechanism can drive the vertical movement mechanism to move horizontally, or the vertical movement mechanism can drive the horizontal movement mechanism to move vertically; the translation shaft can be mounted on the horizontal moving mechanism or the vertical moving mechanism, so that the translation shaft can move horizontally and vertically; the device further comprises a signal transmitter and a signal receiver, the signal transmitter can be installed on the translation shaft, and the position where the signal receiver is located can receive signals transmitted by the signal transmitter. The signal emitter is an optical fiber module, the signal receiver is an ICCD module, and optical signals emitted by the optical fiber module can form a clear image in the ICCD module. According to the invention, a detection method based on an optical imaging principle is used to realize non-contact and high-precision measurement of a target object.

Description

Technical Field

[0001] The invention relates to the technical field, and in particular to a translation axis movement detection device. Background Art

[0002] In the field of precision machinery and automatic control, especially in a high vacuum chamber environment, the movement accuracy of shaft parts is directly related to the stability and accuracy of the entire system. Traditionally, the calibration measurement of the position and motion state of moving shaft parts mainly relies on manual handheld detection instruments.

[0003] This method is not only limited by the skill level and experience of the inspectors, but is also easily affected by on-site environmental factors (such as temperature fluctuations, light changes, dust interference, etc.), resulting in large errors and uncertainties in the measurement results, thereby reducing the measurement accuracy.

[0004] In addition, manual inspection may cause scratches or wear on the surface of the mobile platform parts due to direct contact, affecting the service life of the mobile platform. And traditional inspection methods often have difficulty in accurately capturing tiny swings and speed changes under high-speed motion, resulting in low efficiency in system debugging and optimization. Utility Model Content

[0005] The purpose of the invention is to provide a translation axis movement detection device, which uses a detection method based on the optical imaging principle to achieve non-contact, high-precision measurement of a target object; so as to solve the technical problems existing in the prior art.

[0006] In order to solve the above technical problems, the invention specifically provides the following technical solutions:

[0007] A translation axis movement detection device comprises a horizontal movement mechanism and a vertical movement mechanism arranged on a detection platform, wherein the horizontal movement mechanism can drive the vertical movement mechanism to move horizontally, or the vertical movement mechanism can drive the horizontal movement mechanism to move vertically; the translation axis can be installed on the horizontal movement mechanism or the vertical movement mechanism so that the translation axis can move horizontally and vertically; and also comprises a signal transmitter and a signal receiver, wherein the signal transmitter can be installed on the translation axis, and the signal receiver is located at a position capable of receiving a signal sent by the signal transmitter.

[0008] Furthermore, the signal transmitter is an optical fiber module, the signal receiver is an ICCD module, and the optical signal emitted by the optical fiber module can form a clear image in the ICCD module.

[0009] Furthermore, the optical fiber module is installed on the translation axis via an optical bench; the optical bench can adjust the positional relationship between the optical fiber module and the ICCD module so that the optical signal emitted by the optical fiber module can form a clear image in the ICCD module.

[0010] Furthermore, the optical mount includes a telescopic rod, on which a tightening bolt is provided for fixing the telescopic length of the telescopic rod; one end of the telescopic rod is provided with a first mounting seat for mounting the optical fiber module, and the other end of the telescopic rod is provided with a second mounting seat for being detachably connected to the translation axis.

[0011] Furthermore, the vertical moving mechanism includes at least one set of a first screw pair and a lifting platform; wherein, the first screw pair is vertically arranged on the detection platform, the lifting platform is provided with a through hole for the screw of the first screw pair to pass through, and the nut of the first screw pair is fixedly connected to the lifting platform; the horizontal moving mechanism is arranged on the lifting platform, and the translation shaft is installed on the movable end of the horizontal moving mechanism.

[0012] Furthermore, guide columns are vertically arranged at the four corners of the detection platform, and guide holes for the guide columns to pass through are arranged at corresponding positions of the lifting platform.

[0013] Furthermore, the horizontal moving mechanism includes a second screw pair and a mounting block for mounting the translation shaft; wherein the nut of the second screw pair and the mounting block are an integrated structure; the mounting block is provided with at least two groups of clamping assemblies for fixing the translation shaft, and the translation shaft is overlapped or parallel with the screw of the second screw pair.

[0014] Furthermore, the edge of the mounting block is a rack structure, and the rack structure is parallel to the lead screw of the second lead screw pair, and a gear that can mesh with the rack structure is provided on the lifting platform.

[0015] Furthermore, the clamping assembly includes a base and clamping handles hinged at both ends of the base; wherein the base is arranged perpendicularly relative to the installation direction of the translation shaft, and a groove is provided at the position where the base contacts the translation shaft; the ends of all the clamping handles on the same side are connected to the same connecting rod; the two ends of the connecting rod on both sides are connected by bolts so that the clamping handles on both sides of the base can apply clamping force to the translation shaft located at the groove.

[0016] Compared with the prior art, the invention has the following beneficial effects:

[0017] The translational axis movement detection device of the present invention combines fiber optic imaging with ICCD technology. Due to its excellent sensitivity and signal-to-noise ratio characteristics, it is particularly suitable for applications in extreme environments (such as high vacuum environments). The ICCD imaging system can capture weak light signals and amplify the signals through an internal gain mechanism, thereby achieving accurate and stable detection of moving axis parts in a high vacuum environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the implementation methods of the invention or the technical solutions in the prior art, the drawings required for the implementation methods or the description of the prior art are briefly introduced below. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0019] Figure 1 This is a schematic structural diagram of the translation axis movement detection device provided by the present invention;

[0020] Figure 2 A side view of the translation axis movement detection device provided by the present invention;

[0021] Figure 3 This is a schematic diagram of the translation axis movement detection device provided by the present invention performing detection in a cavity;

[0022] Figure 4 is a schematic diagram of the structure of the clamping assembly;

[0023] Figure 5 A schematic diagram of another embodiment of the clamping assembly.

[0024] The numbers in the figure represent the following:

[0025] 1-detection platform, 2-horizontal moving mechanism, 3-vertical moving mechanism, 4-translational axis, 5-signal transmitter, 6-signal receiver, 7-optical bench, 8-cavity, 9-data processing system;

[0026] 71- telescopic rod, 72- first mounting seat, 73- second mounting seat;

[0027] 21-second screw pair, 22-mounting block, 23-clamping assembly, 24-rack structure, 25-gear;

[0028] 231-base, 232-clamping handle, 233-connecting rod, 234-bolt;

[0029] 235-pressing plate, 236-screw, 237-nut;

[0030] 31-first screw pair, 32-lifting platform, 33-through hole, 34-guide column, 35-guide hole. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the invention to clearly and completely describe the technical solutions in the embodiments of the invention. Obviously, the described embodiments are only part of the embodiments of the invention, not all of the embodiments. Based on the embodiments in the invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the invention.

[0032] like Figure 1 As shown, the invention provides an implementation of a translation axis movement detection device, comprising a horizontal moving mechanism 2 and a vertical moving mechanism 3 arranged on a detection platform 1; wherein, there are two possible positional relationships between the horizontal moving mechanism 2 and the vertical moving mechanism 3; the horizontal moving mechanism 2 can drive the vertical moving mechanism 3 to move horizontally, and the translation axis 4 is installed on the vertical moving mechanism 3; or the vertical moving mechanism 3 can drive the horizontal moving mechanism 2 to move vertically, and then the translation axis 4 is installed on the horizontal moving mechanism 2; thereby, the translation axis 4 can ultimately achieve horizontal and vertical movements.

[0033] It also includes a signal transmitter 5 and a signal receiver 6. The signal transmitter 5 can be installed on the translation shaft 4. The positional relationship between the signal transmitter 5 and the signal receiver 6 enables the signal receiver 6 to still receive the signal emitted by the signal transmitter 5 when the translation shaft 4 is moving.

[0034] Furthermore, in this embodiment, the signal transmitter 5 is an optical fiber module, and the signal receiver 6 is an ICCD module; the optical fiber module is used to emit optical signals, and the ICCD module is an enhanced charge-coupled device used to receive the optical signals emitted by the optical fiber module and convert them into electrical signals for imaging processing, so that the optical signals emitted by the optical fiber module can form clear images in the ICCD module with high sensitivity and rapid response capabilities.

[0035] The combination of the optical fiber module and the ICCD module can achieve non-contact, high-precision measurement of the target object by capturing and analyzing the image formed by the object being measured. It can not only quickly and accurately obtain a large amount of measurement data, but also has the characteristics of reducing human intervention and improving detection efficiency and reliability.

[0036] And because the ICCD module can capture weak light signals and amplify the signals through an internal gain mechanism, it has excellent sensitivity and signal-to-noise ratio characteristics, and is particularly suitable for applications in extreme environments (such as high vacuum environments); thereby achieving accurate and stable detection of moving shaft parts in high vacuum environments.

[0037] In this embodiment, if Figure 3 As shown, the translation axis movement detection device is used to detect the movement of the translation axis 4 in the sealed cavity 8. An opening is provided at the top of the cavity 8. The main body of the device is horizontally placed at the bottom of the sealed cavity 8. The optical signal emitting end of the optical fiber module is vertically upward, and the optical signal can pass through the opening; the ICCD module is arranged at the opening, so that the signal receiving end of the ICCD module can receive the optical signal emitted by the optical fiber module.

[0038] The ICCD module is connected to a separately arranged data processing system 9 , which receives the image data output by the ICCD module, performs real-time analysis and processing, and displays the image data on a display screen of the data processing system 9 .

[0039] This embodiment provides an example for the specific installation of the optical fiber module. Figure 1 and Figure 2 As shown:

[0040] The optical fiber module is installed on the translation axis 4 via the optical bench 7; the optical bench 7 is mainly used to adjust the positional relationship between the optical fiber module and the ICCD module so that the optical signal emitted by the optical fiber module can form a clear image in the ICCD module.

[0041] In combination with the detection environment of this embodiment, the optical bench 7 is used to adjust the distance between the end face of the signal transmitting end of the optical fiber module and the end face of the signal receiving end of the ICCD module to obtain the best imaging effect and ensure the detection accuracy.

[0042] The optical mount 7 includes a telescopic rod 71, on which a tightening bolt is provided for fixing the telescopic length of the telescopic rod 71; one end of the telescopic rod 71 is provided with a first mounting seat 72 for mounting an optical fiber module, and the other end of the telescopic rod 71 is provided with a second mounting seat 73 that can be detachably connected to the translation shaft 4.

[0043] The first mounting seat 72 is a ring-shaped structure, and a side wall is provided with tightening bolts. The optical fiber module is arranged in the first mounting seat 72, and the optical fiber module is fixed by tightening the bolts.

[0044] The second mounting seat 73 is also a ring-shaped structure, and a tightening bolt is provided on the side wall. The translation shaft 4 passes through the second mounting seat 73, and the translation shaft 4 is fixed by tightening the bolt.

[0045] This embodiment also provides an embodiment of the vertical movement mechanism 3, such as Figure 1 and Figure 2 As shown:

[0046] The vertical moving mechanism 3 includes at least one group of first screw pairs 31 and a lifting platform 32. In the figure, one group of first screw pairs 31 is used. In actual applications, multiple groups of first screw pairs 31 can also be selected according to actual conditions; wherein, the first screw pair 31 is vertically arranged on the detection platform 1, and the lifting platform 32 is provided with a through hole 33 for the screw of the first screw pair 31 to pass through, and the nut of the first screw pair 31 is fixedly connected to the lifting platform 32; the horizontal moving mechanism 2 is arranged on the lifting platform 32, and the translation shaft 4 is installed on the movable end of the horizontal moving mechanism 2.

[0047] Furthermore, guide columns 34 are vertically provided at the four corners of the detection platform 1, and guide holes 35 for the guide columns 34 to pass through are provided at corresponding positions of the lifting platform 32, so as to make the lifting of the lifting platform 32 more stable and avoid affecting the detection results.

[0048] The lifting platform 32 is driven to move in the vertical direction by the first screw pair 31, and the optical fiber module moves synchronously. The range of movement of the optical fiber module in the vertical direction is within the observation range of the ICCD module. Therefore, it will not affect the clarity of the imaging. The position changes of the optical fiber image points are captured and recorded in real time by the ICCD module, and the imaging technology is used to analyze the position offset of the image points before and after the movement of the translation axis 4, so as to verify whether there is an offset in the manual up and down movement of the translation axis 4.

[0049] This embodiment also provides an embodiment of the horizontal movement mechanism 2, such as Figure 1 and Figure 2 As shown:

[0050] The horizontal moving mechanism 2 includes a second screw pair 21 and a mounting block 22 for mounting the translation shaft 4; wherein the nut of the second screw pair 21 and the mounting block 22 are an integrated structure; at least two groups of clamping assemblies 23 for fixing the translation shaft 4 are provided on the mounting block 22, so that the translation shaft 4 overlaps or is parallel to the screw rod of the second screw pair 21.

[0051] The second screw pair 21 drives the mounting block 22 to move horizontally along the screw of the second screw pair 21 ; the detection of the device in the horizontal direction includes swing detection and speed uniformity detection.

[0052] The swing detection adopts the ICCD single exposure mode to record the image sequence of the light signal emitted by the optical fiber module during the horizontal movement; through the image processing technology, the trajectory changes of the optical fiber image points in the image are analyzed to evaluate the swing of the translation axis 4.

[0053] The speed uniformity test adopts the ICCD multiple exposure mode to continuously capture multiple instantaneous images of the light signal emitted by the optical fiber module during the horizontal movement; based on the timestamp of the image sequence and the position information of the optical fiber image point, the actual moving speed of the translation axis 4 is calculated, and its speed uniformity is evaluated by comparing the speed values ​​of each segment.

[0054] Furthermore, in the present embodiment, the edge of the mounting block 22 is a rack structure 24, and the rack structure 24 is parallel to the screw of the second screw pair 21, and the lifting platform 32 is provided with a gear 25 that can mesh with the rack structure 24, which not only ensures the stability of the movement of the mounting block 22, but also can improve the movement accuracy of the mounting block 22 in the horizontal direction, so as to improve the detection accuracy of the horizontal movement of the translation shaft 4.

[0055] In order to facilitate the clamping of the translation shaft 4 and to be able to clamp translation shafts 4 of different specifications, the present embodiment also discloses an embodiment of the clamping assembly 23, such as Figure 4 As shown:

[0056] The clamping assembly 23 includes a base 231 and clamping handles 232 hinged at both ends of the base 231; wherein the base 231 is vertically arranged relative to the installation direction of the translation shaft 4, and a groove is provided at the position where the base 231 contacts the translation shaft 4; the ends of all clamping handles 232 on the same side are connected to the same connecting rod 233; the two ends of the connecting rod 233 on both sides are connected by bolts 234, so that the clamping handles 232 on both sides of the base 231 can apply clamping force to the translation shaft 4 located at the groove.

[0057] The specific steps are as follows: place the two ends of the translation shaft 4 on the base 231. Under the action of gravity, the translation shaft 4 is located at the lowest point of the groove and remains stationary; by tightening the bolt 234 at the connecting rod 233, the clamping handle 232 clamps the translation shaft 4 to fix the translation shaft 4.

[0058] This embodiment discloses another embodiment of the clamping assembly 23, such as Figure 5 As shown:

[0059] The clamping assembly 23 includes a base 231 and a clamping plate 235 , and the translation shaft 4 is installed between the base 231 and the clamping plate 235 . A groove is provided at the position where the base 231 contacts the translation shaft 4 , and the clamping plate 235 applies a clamping force to the translation shaft 4 from above the translation shaft 4 .

[0060] Screw rods 236 are vertically upwardly provided on both sides of the base 231 , and the screw rods 236 pass through the clamping plate 235 . A threaded nut 237 is provided at the end of the screw rod 236 . By tightening the nut 237 , the pressure plate 235 is driven to move downward, thereby applying a clamping force to the translation shaft 4 .

[0061] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A translation axis movement detection device, characterized in that: The detection platform (1) comprises a horizontal moving mechanism (2) and a vertical moving mechanism (3); wherein the horizontal moving mechanism (2) is capable of driving the vertical moving mechanism (3) to move horizontally, and the translation axis (4) is mounted on the vertical moving mechanism (3); or the vertical moving mechanism (3) is capable of driving the horizontal moving mechanism (2) to move vertically, and the translation axis (4) is mounted on the horizontal moving mechanism (2), so that the translation axis (4) is capable of moving horizontally and vertically. It also includes a signal transmitter (5) and a signal receiver (6); wherein the signal transmitter (5) can be installed on the translation axis (4), and the positional relationship between the signal transmitter (5) and the signal receiver (6) enables the signal receiver (6) to still receive the signal emitted by the signal transmitter (5) when the translation axis (4) is moving.

2. The translation axis movement detection device according to claim 1, characterized in that: The signal transmitter (5) is an optical fiber module, the signal receiver (6) is an ICCD module, and the optical signal emitted by the optical fiber module can form a clear image in the ICCD module.

3. The translation axis movement detection device according to claim 2, characterized in that: The optical fiber module is mounted on the translation axis (4) via an optical bench (7); the optical bench (7) can adjust the positional relationship between the optical fiber module and the ICCD module so that the optical signal emitted by the optical fiber module can form a clear image in the ICCD module.

4. The translation axis movement detection device according to claim 3, characterized in that: The optical fixture (7) comprises a telescopic rod (71), on which a tightening bolt is provided for fixing the telescopic length of the telescopic rod (71); one end of the telescopic rod (71) is provided with a first mounting seat (72) for mounting the optical fiber module, and the other end of the telescopic rod (71) is provided with a second mounting seat (73) for being detachably connected to the translation shaft (4).

5. The translation axis movement detection device according to claim 1 or 4, characterized in that: The vertical moving mechanism (3) comprises at least one set of a first screw pair (31) and a lifting platform (32); wherein the first screw pair (31) is vertically arranged on the detection platform (1), the lifting platform (32) is provided with a through hole (33) for the screw of the first screw pair (31) to pass through, and the nut of the first screw pair (31) is fixedly connected to the lifting platform (32); the horizontal moving mechanism (2) is arranged on the lifting platform (32), and the translation shaft (4) is installed on the movable end of the horizontal moving mechanism (2).

6. The translation axis movement detection device according to claim 5, characterized in that: Guide columns (34) are vertically arranged at the four corners of the detection platform (1), and guide holes (35) for the guide columns (34) to pass through are arranged at corresponding positions of the lifting platform (32).

7. The translation axis movement detection device according to claim 1 or 6, characterized in that: The horizontal moving mechanism (2) comprises a second screw pair (21) and a mounting block (22) for mounting the translation shaft (4); wherein the nut of the second screw pair (21) and the mounting block (22) are an integrated structure; and the mounting block (22) is provided with at least two groups of clamping assemblies (23) for fixing the translation shaft (4), so that the translation shaft (4) overlaps or is parallel to the screw rod of the second screw pair (21).

8. The translation axis movement detection device according to claim 7, characterized in that: The edge of the mounting block (22) is a rack structure (24), and the rack structure (24) is parallel to the screw of the second screw pair (21), and the lifting platform (32) is provided with a gear (25) that can mesh with the rack structure (24).

9. The translation axis movement detection device according to claim 8, characterized in that: The clamping assembly (23) comprises a base (231) and clamping handles (232) hinged at both ends of the base (231); wherein the base (231) is arranged perpendicularly relative to the installation direction of the translation shaft (4), and a groove is provided at the position where the base (231) contacts the translation shaft (4); the ends of all the clamping handles (232) located on the same side are connected to the same connecting rod (233); the two ends of the connecting rod (233) located on both sides are connected by bolts (234), so that the clamping handles (232) on both sides of the base (231) can apply a clamping force to the translation shaft (4) located at the groove.

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