A high speed measuring instrument

Abstract

The utility model discloses a high -speed measuring instrument relates to high -speed measuring instrument technical field, including transmission case, its top around the axial rotation connection has the measuring station, transmission case outer wall along the length direction both sides of positioning stand rotation connection has the adjustment assembly that rotates around transmission case radial, transmission case is located above the positioning stand, the transmission case with the center of measuring station all are equipped with the limiting hole, the utility model discloses through the precision servo push rod drive adjusting plate, utilizes the bevel edge guide slot with the pull spring linkage, realizes the antagonistic telescopic positioning of limiting conical pin and positioning cylindrical pin, and operating personnel can according to the hole or the outer diameter specification of different batches of parts, preset servo push rod's multistage gear position parameter, when batch measurement, system can one -key switch to corresponding positioning gear position, need not manual repeated adjustment or re -adjustment fixture, has eliminated the present manual change type and brought the clamping error, has improved the efficiency and data consistency of multivariety, large -batch parts continuous quality inspection significantly.

Description

Technical Field

[0001] This utility model relates to the field of high-speed measuring instrument technology, specifically a high-speed measuring instrument. Background Technology

[0002] High-speed measuring instruments, also known as horizontal optical projection measuring instruments, are non-contact precision dimensional inspection devices. Relying on telecentric optical imaging and machine vision algorithms, they can quickly and accurately measure geometric parameters such as the inner and outer diameters, lengths, angles, and form and position tolerances of workpieces without the risk of contact scratches. They are widely used in batch quality inspection processes in industries such as precision machining, hardware, and electronics. In existing technologies, different positioning fixtures are often required for measuring shaft-type (outer diameter) and hole / shaft seal-type (inner hole) parts. To meet the needs of both horizontal and vertical testing, Chinese utility model patent application number CN215373848U discloses a horizontal and vertical universal optical precision measuring instrument. Its technical solution mainly achieves the switching between horizontal and vertical use of the measuring instrument through the cooperation of a base, a first fixed base, a second fixed base, and an angle fine-tuner. While this solution solves the pointing problem of the measuring instrument itself, it still has the following shortcomings when dealing with the changing measurements of shaft and hole parts: When switching measurement tasks, operators still need to frequently disassemble and recalibrate the positioning fixture, which not only results in low changeover efficiency, but also easily introduces operational errors due to repeated manual clamping, making it difficult to guarantee repeatability and data consistency during the quality inspection of large batches of parts. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a high-speed measuring instrument that solves the technical problem that when switching measurement tasks, operators still need to frequently disassemble and recalibrate the positioning fixture, resulting in low changeover efficiency and the risk of operational errors due to repeated manual clamping, making it difficult to guarantee the repeatability and data consistency of mass parts quality inspection.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A high-speed measuring instrument includes a measuring instrument body and a positioning frame, wherein the positioning frame is fixedly installed in the middle of the measuring instrument body base, and further includes: A transmission box has a measuring platform rotatably connected to its top axially. Adjustment components that rotatably rotate about the radial direction of the transmission box are rotatably connected to both sides of the outer wall of the transmission box along the length direction of the positioning frame. The transmission box is located above the positioning frame. Limiting holes are opened at the center of both the transmission box and the measuring platform. An adjusting plate, which is located at the center inside the transmission box and is slidably connected to the transmission box along the radial direction of the transmission box; The limiting conical pin and the positioning cylindrical pin both have beveled guide grooves at their bottom ends and are connected by two tension springs. The beveled guide grooves are slidably adapted to the adjusting plate. The conical ends of the limiting conical pin and the positioning cylindrical pin are both inserted into the limiting hole. The arc-shaped guide frame is slidably adapted to the limiting conical pin and the positioning cylindrical pin, and is fixedly connected to the center of the bottom wall of the transmission box and the center of the lower wall of the measuring table, respectively. A limiting slide is fixedly connected to the center of the bottom wall of the transmission box along the width direction of the positioning frame. A measuring frame is slidably connected inside the limiting slide. A positioning hole is opened in the center of the measuring frame. The positioning hole is adapted to be inserted into a positioning cylindrical pin. The limiting end of the measuring frame is V-shaped.

[0005] Preferably, the adjustment component includes: Two synchronous cylinders are fixedly connected to the guide end of the cylinder and the limit frame is fixedly installed on the drive end of the cylinder. A rotating rod is provided at the center of the limit frame and a plug rod is provided on the side of the rotating rod. The rotating rod and the plug rod are both fixedly connected to the limit frame. Two positioning blocks are fixedly connected to the outer wall of the transmission box and are symmetrically distributed along the limiting slide. The center of the positioning block is rotatably connected to the rotating rod. The positioning block has a plug hole that is adapted to the plug-in rod. When the plug-in rod is plugged into the plug hole, the lower wall of the transmission box is parallel to the positioning frame.

[0006] Preferably, the adjusting plate has a parallelogram structure, with its hypotenuse serving as a guide side and its short side as a driving side, and the short side being parallel to the axis of the transmission box.

[0007] Preferably, a precision servo push rod is fixedly installed on the inner side wall of the transmission box, and the driving end of the precision servo push rod is fixedly connected to the driving end of the adjustment plate.

[0008] Preferably, the arc-shaped guide frame is provided with guide rails on both sides, the guide rails extend along the driving direction of the precision servo push rod, and the driving end of the precision servo push rod is fixedly installed with a guide slider that is adapted to slide with the guide rail.

[0009] Preferably, a drive motor is fixedly installed on the bottom wall of the transmission box, a drive bevel gear is fixedly installed on the drive end of the drive motor, and a bevel gear seat ring that meshes with the drive bevel gear is fixedly installed on the lower wall of the measuring platform.

[0010] Preferably, the upper wall of the measuring platform is provided with anti-slip texture.

[0011] This utility model provides a high-speed measuring instrument, which has the following beneficial effects: This invention achieves integrated measurement of shaft parts and hole / shaft seal parts by using a radially rotating transmission box and a locking mechanism between the plug rod and the plug hole. Station switching can be completed without disassembling any positioning components, significantly reducing changeover time. It also ensures structural rigidity in both stations, solving the problem that operators still need to frequently disassemble and recalibrate the positioning fixture when switching measurement tasks. This not only results in low changeover efficiency but also introduces operational errors due to repeated manual clamping, making it difficult to guarantee repeatability and data consistency during the quality inspection of large batches of parts.

[0012] This invention uses a precision servo push rod to drive an adjustment plate, and utilizes the linkage between the inclined guide groove and the tension spring to achieve antagonistic telescopic positioning of the limiting conical pin and the positioning cylindrical pin. Operators can preset multi-level gear parameters of the servo push rod according to the inner hole or outer diameter specifications of different batches of parts. During batch measurement, the system can switch to the corresponding positioning gear with one click, eliminating the need for repeated manual adjustment or recalibration of the fixture. This eliminates the clamping errors caused by existing manual model changes and significantly improves the efficiency and data consistency of continuous quality inspection of multi-variety, large-batch parts. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the connection structure between the transmission box and the limiting frame of this utility model; Figure 3 This is an exploded structural diagram of the transmission box of this utility model; Figure 4 for Figure 3 A magnified view of a portion of point A in the middle.

[0014] In the diagram: 1. Measuring instrument body; 2. Positioning frame; 3. Transmission box; 4. Measuring platform; 5. Limiting hole; 6. Adjusting plate; 7. Limiting conical pin; 8. Positioning cylindrical pin; 9. Inclined guide groove; 10. Tension spring; 11. Arc-shaped guide frame; 12. Limiting slide; 13. Measuring frame; 14. Positioning hole; 15. Synchronous cylinder; 16. Limiting frame; 17. Rotating rod; 18. Connecting rod; 19. Positioning block; 20. Connecting hole; 21. Precision servo push rod; 22. Guide rail; 23. Guide slider; 24. Drive motor; 25. Drive bevel gear; 26. Bevel gear seat ring. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0016] Please see Figures 1-4A high-speed measuring instrument includes a measuring instrument body 1 and a positioning frame 2, the positioning frame 2 being fixedly installed in the middle of the base of the measuring instrument body 1, and further includes: The transmission box 3 has a measuring platform 4 rotatably connected to its top. The outer wall of the transmission box 3 is rotatably connected to the two sides along the length of the positioning frame 2, and the adjustment components rotate radially around the transmission box 3. The transmission box 3 is located above the positioning frame 2. Limiting holes 5 are opened at the center of both the transmission box 3 and the measuring platform 4. The transmission box 3 provides an integrated sealed installation space for the rotation drive and positioning locking structure of the measuring platform 4. The measuring platform 4 provides a platform for placing and rotating the part to be measured. The limiting holes 5 opened coaxially at the center of the transmission box 3 and the measuring platform 4 provide a precise coaxial reference for the telescopic insertion of the limiting conical pin 7 and the positioning cylindrical pin 8. Adjusting plate 6 is located inside the center of transmission box 3 and is slidably connected to transmission box 3 radially. When measuring shaft seal parts, the sliding of adjusting plate 6 drives the limiting conical pin 7 to extend upward along the arc-shaped guide frame 11 to the limiting hole 5, and at the same time, the tension spring 10 drives the positioning cylindrical pin 8 to retract along the corresponding arc-shaped guide frame 11. The limiting conical pin 7 and the positioning cylindrical pin 8 both have beveled guide grooves 9 at their bottom ends and are connected by two tension springs 10. The beveled guide grooves 9 are slidably adapted to the adjusting plate 6. The conical ends of the limiting conical pin 7 and the positioning cylindrical pin 8 are inserted into the limiting hole 5. The conical surface of the limiting conical pin 7 realizes the automatic centering and positioning of the inner hole of the shaft seal, restricts the horizontal freedom of the shaft seal, and is suitable for batch measurement of shaft seals with different specifications of inner holes. The arc-shaped guide frame 11 is slidably adapted to the limiting conical pin 7 and the positioning cylindrical pin 8, and is fixedly connected to the center of the bottom wall of the transmission box 3 and the center of the lower wall of the measuring table 4, respectively. The limiting slide 12 is fixedly connected to the center of the bottom wall of the transmission box 3 along the width direction of the positioning frame 2. The measuring frame 13 is slidably connected inside the limiting slide 12. The center of the measuring frame 13 has a positioning hole 14, which is fitted with a positioning cylindrical pin 8. The limiting end of the measuring frame 13 is V-shaped.

[0017] In use, when measuring pin-type or shaft-type parts, the horizontal lock of the transmission box 3 is released by adjusting the assembly, the transmission box 3 is rotated 180° radially and then relocked, so that the limiting slide 12 faces the detection end of the measuring instrument body 1. Then, the measuring frame 13 is slid in along the limiting slide 12, so that the positioning hole 14 of the measuring frame 13 is coaxially aligned with the limiting hole 5. The reverse drive adjustment plate 6 slides, causing the positioning cylindrical pin 8 to extend out of the limiting hole 5 and insert into the positioning hole 14, completing the rigid locking of the measuring frame 13. The V-shaped... The limiting end enables rapid positioning of pin-type parts and is suitable for batch precise measurement of pin-type parts; when the adjusting plate 6 slides, its side edge slides and adapts to the inclined guide groove 9 at the bottom of the limiting conical pin 7 and the positioning cylindrical pin 8. The synchronous extension and retraction of the two pins is achieved through inclined plane transmission. The tension spring 10 provides continuous pre-tightening tension for the two pins, eliminates transmission gaps, and ensures the accuracy of extension and retraction positioning. The arc-shaped guide frame 11 provides precise arc-shaped guidance for the extension and retraction of the two pins, ensuring that the pins always extend and retract along the axial direction of the limiting hole 5 and avoids skewing and jamming.

[0018] The adjustment assembly includes two synchronous cylinders 15, whose guide ends are fixedly connected to the positioning frame 2. The driving end of the synchronous cylinder 15 is fixedly installed with a limit frame 16. A rotating rod 17 is provided at the center of the limit frame 16, and a plug-in rod 18 is provided on the side of the rotating rod 17. Both the rotating rod 17 and the plug-in rod 18 are fixedly connected to the limit frame 16. Two positioning blocks 19 are fixedly connected to the outer wall of the transmission box 3 and are symmetrically distributed along the limiting slide 12. The center of the positioning block 19 is rotatably connected to the rotating rod 17. The positioning block 19 has a plug hole 20 that is compatible with the plug rod 18. When the plug rod 18 is compatible with the plug hole 20, the lower wall of the transmission box 3 is parallel to the positioning frame 2.

[0019] In use, the two synchronous cylinders 15 extend and retract synchronously, which can drive the limit frame 16 to rise and fall as a whole, adapting to the height avoidance requirements during the rotation of the transmission box 3. The limit frame 16 provides stable installation support for the rotating rod 17 and the plug rod 18. The rotating rod 17 provides a rotational hinge reference for the radial rotation of the transmission box 3, and the plug rod 18 is used to lock and fix the position of the transmission box 3. When it is necessary to switch the measurement mode of pin-type parts or rotate the transmission box 3, first start the matching drive component in the limit frame 16 to drive the plug rod 18 to retract, release the lock on the transmission box 3, and then rotate the transmission box 3 around the rotating rod 17 to switch the working surface of the transmission box 3. After rotating into place, drive the plug rod 18 to extend and reset, and the locking of the transmission box 3 can be completed again. The operation is simple and convenient, and it can realize the rapid switching between two measurement modes, greatly improving the changeover efficiency of measuring different types of parts.

[0020] The adjusting plate 6 has a parallelogram structure, with its hypotenuse as the guide side and its short side as the driving side. The short side is parallel to the axis of the transmission box 3.

[0021] In use, the adjusting plate 6 adopts a parallelogram structure, with two symmetrical inclined sides serving as guide sides. These sides slide and adapt to the inclined guide grooves 9 at the bottom of the limiting conical pin 7 and the positioning cylindrical pin 8, respectively. When the adjusting plate 6 slides horizontally along the radial direction of the transmission box 3, the horizontal linear motion of the adjusting plate 6 is converted into the vertical extension and retraction motion of the two pins along the axial direction through the wedge block transmission principle of the inclined surface. The extension and retraction actions of the two pins are synchronized, realizing the rapid switching of the positioning mode. The short side parallel to the axis of the transmission box 3 serves as the driving side, providing a straight connection reference for the driving components. This ensures that the driving force is transmitted linearly along the sliding direction of the adjusting plate 6 without any lateral component force, preventing the adjusting plate 6 from tilting during sliding. This ensures precise control of the extension and retraction stroke of the two pins, thereby enabling precise adjustment of the gear positions for parts of different specifications.

[0022] A precision servo push rod 21 is fixedly installed on the inner wall of the transmission box 3, and the driving end of the precision servo push rod 21 is fixedly connected to the driving side of the adjustment plate 6.

[0023] In use, the precision servo push rod 21 provides high-precision, programmable driving power for the sliding of the adjustment plate 6, which can precisely control the advancing stroke of the adjustment plate 6, and thus precisely control the extension height of the limit cone pin 7, adapting to the measurement needs of shaft seals with different inner hole specifications. When measuring shaft seals, the operator can calculate the advancing stroke of the precision servo push rod 21 according to the inner hole size of the shaft seal to be measured, input the parameters into the precision servo push rod 21 and set the corresponding measurement gear. During batch testing, the precision servo push rod 21 at the corresponding gear can be directly started, which can drive the adjustment plate 6 to move precisely to the set position, realizing the precise adjustment of the extension height of the limit cone pin 7, adapting to the rapid batch measurement of parts with different specifications, without the need for repeated manual adjustment of positioning, greatly improving the efficiency and accuracy of batch measurement.

[0024] The arc-shaped guide frame 11 is provided with guide rails 22 on both sides. The guide rails 22 extend along the driving direction of the precision servo push rod 21. The driving end of the precision servo push rod 21 is fixedly installed with a guide slider 23 that is slidably adapted to the guide rails 22.

[0025] In use, the guide rail 22 extends linearly along the driving direction of the precision servo push rod 21 and slides with the guide slider 23, providing precise linear guidance for the sliding of the adjustment plate 6 throughout the entire process. This strictly limits the vertical and lateral offset of the adjustment plate 6, ensuring that the adjustment plate 6 maintains a precise linear motion trajectory during high-speed reciprocating sliding and frequent gear switching. It eliminates transmission gaps and motion deviations, ensuring the long-term stability of the telescopic positioning accuracy of the limit cone pin 7 and the positioning cylindrical pin 8, avoiding pin jamming and positioning deviations caused by the skewness of the adjustment plate, and ensuring the consistency and accuracy of the measurement data.

[0026] A drive motor 24 is fixedly installed on the bottom wall of the transmission box 3. A drive bevel gear 25 is fixedly installed on the drive end of the drive motor 24. A bevel gear seat ring 26 that meshes with the drive bevel gear 25 is fixedly installed on the lower wall of the measuring table 4.

[0027] In use, the drive motor 24 provides driving power for the rotation of the measuring table 4. After the cross-sectional dimensions of the shaft seal are measured, the drive motor 24 is started, which drives the drive bevel gear 25 to rotate. Through the meshing transmission between the drive bevel gear 25 and the bevel gear seat ring 26, the measuring table 4 is driven to rotate at a constant speed around the axis of the limiting cone pin 7, thereby driving the shaft seal placed on the measuring table 4 to rotate synchronously. This achieves continuous and high-speed measurement of the full circumferential dimensions of the shaft seal, eliminating the need for manual rotation of the parts and greatly improving the efficiency and accuracy of circumferential dimension measurement, while avoiding positioning deviations caused by manual rotation.

[0028] The upper wall of measuring platform 4 is provided with anti-slip texture.

[0029] During use, the anti-slip texture on the upper wall of the measuring platform 4 can greatly increase the static friction between the measuring platform 4 and the shaft seal to be measured. During the measurement process, the measuring platform 4 drives the shaft seal to rotate and measure, preventing relative slippage and displacement between the shaft seal and the measuring platform 4. This ensures that the part remains coaxial and centered with the limiting conical pin 7 during rotation, avoiding distortion of measurement data caused by part displacement, and ensuring the accuracy and stability of circumferential measurement.

[0030] In Example 1, when the operator measures the shaft seal, the precision servo push rod advance stroke is calculated based on the inner hole of the shaft seal. The parameters are input into the precision servo push rod 21 and a gear is set. During batch testing, the precision servo push rod 21 at the corresponding gear is activated. The precision servo push rod 21 drives the driving side of the adjustment plate 6, causing the adjustment plate 6 and the guide slider 23 to move along the guide rail 22. When moving backward, the guide side of the adjustment plate 6 drives the limiting conical pin 7 to rise along the corresponding arc-shaped guide frame 11 through the inclined guide groove 9, extending out of the limiting hole 5. At the same time, the two tension springs 10 drive the positioning cylindrical pin 8 to move along the other side of the adjustment plate 6 through the inclined guide groove 9. As the guide edge moves, the positioning cylindrical pin 8 is pulled to follow the movement along the corresponding arc-shaped guide frame 11. When the stop is reached, the operator can directly insert the shaft seal to be measured into the limiting conical pin 7 (the inner hole of the shaft seal is larger than the limiting hole 5). The limiting conical pin 7 has a self-centering function, which restricts the horizontal freedom of the shaft seal and can also adjust the stop according to the size of the inner hole of different shaft seals. After the cross-sectional dimensions are measured, the drive motor 24 can be started, and the bevel gear 25 and the bevel gear seat ring 26 can be driven to rotate the measuring table 4 and the shaft seal around the limiting conical pin 7. The anti-slip texture on the measuring table 4 increases stability. In Example 2, when the operator is measuring the pin, he holds the bottom of the transmission box 3 with one hand and starts the electric cylinder or pneumatic cylinder inside the limit frame 16 with the other hand, which drives the plug rod 18 to retract along the plug hole 20, thereby releasing the limit on the transmission box 3. Then, the transmission box 3 is flipped around the rotating rod 17 to reset the plug rod 18 and insert it into the plug hole 20. Then, slide the measuring frame 13 along the limiting slide 12 until the positioning hole 14 is aligned with the corresponding limiting hole 5. At this time, reverse drive the precision servo push rod 21 to the set value, so that the limiting conical pin 7 and the positioning cylindrical pin 8 move in the opposite direction until the positioning cylindrical pin 8 is inserted into the positioning hole 14, limiting the measuring frame 13. At this time, the pin can be placed into the V-shaped limiting end of the measuring frame 13 for subsequent batch measurement.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-speed measuring instrument, comprising a measuring instrument body (1) and a positioning frame (2), wherein the positioning frame (2) is fixedly installed in the middle of the base of the measuring instrument body (1), characterized in that, Also includes: The transmission box (3) has a measuring platform (4) rotatably connected to its top. The outer wall of the transmission box (3) is rotatably connected to the two sides of the positioning frame (2) along the length direction, and the adjustment components that rotatably rotate around the transmission box (3) are located above the positioning frame (2). Limiting holes (5) are opened in the center of both the transmission box (3) and the measuring platform (4). Adjustment plate (6), the adjustment plate (6) is located at the center inside the transmission box (3) and is slidably connected to the transmission box (3) along the radial direction of the transmission box (3); The limiting conical pin (7) and the positioning cylindrical pin (8) both have beveled guide grooves (9) at their bottom ends and are connected by two tension springs (10). The beveled guide grooves (9) are slidably adapted to the adjusting plate (6). The conical ends of the limiting conical pin (7) and the positioning cylindrical pin (8) are inserted into the limiting hole (5). The arc-shaped guide frame (11) is slidably adapted to the limiting conical pin (7) and the positioning cylindrical pin (8), and is fixedly connected to the center of the bottom wall of the transmission box (3) and the center of the lower wall of the measuring table (4), respectively. The limiting slide (12) is fixedly connected to the center of the bottom wall of the transmission box (3) along the width direction of the positioning frame (2). A measuring frame (13) is slidably connected inside the limiting slide (12). A positioning hole (14) is opened in the center of the measuring frame (13). The positioning hole (14) is inserted and matched with the positioning cylindrical pin (8). The limiting end of the measuring frame (13) is V-shaped.

2. The high-speed measuring instrument according to claim 1, characterized in that, The adjustment component includes: Two synchronous cylinders (15) are fixedly connected to the positioning frame (2) at their guide ends. A limit frame (16) is fixedly installed at the drive end of the synchronous cylinder (15). A rotating rod (17) is provided at the center of the limit frame (16). A plug rod (18) is provided on the side of the rotating rod (17). The rotating rod (17) and the plug rod (18) are both fixedly connected to the limit frame (16). Two positioning blocks (19) are fixedly connected to the outer wall of the transmission box (3) and are symmetrically distributed along the limiting slide (12). The center of the positioning block (19) is rotatably connected to the rotating rod (17). The positioning block (19) has a plug hole (20) that is compatible with the plug rod (18). When the plug rod (18) is compatible with the plug hole (20), the lower wall of the transmission box (3) is parallel to the positioning frame (2).

3. The high-speed measuring instrument according to claim 1, characterized in that, The adjustment plate (6) has a parallelogram structure, with its hypotenuse as the guide side and its short side as the drive side. The short side is parallel to the axis of the transmission box (3).

4. The high-speed measuring instrument according to claim 3, characterized in that, A precision servo push rod (21) is fixedly installed on the inner wall of the transmission box (3), and the driving end of the precision servo push rod (21) is fixedly connected to the driving side of the adjustment plate (6).

5. The high-speed measuring instrument according to claim 4, characterized in that, The arc-shaped guide frame (11) is provided with guide rails (22) on both sides. The guide rails (22) extend along the driving direction of the precision servo push rod (21). The driving end of the precision servo push rod (21) is fixedly installed with a guide slider (23) that is slidably adapted to the guide rails (22).

6. The high-speed measuring instrument according to claim 1, characterized in that, A drive motor (24) is fixedly installed on the bottom wall of the transmission box (3). A drive bevel gear (25) is fixedly installed on the drive end of the drive motor (24). A bevel gear seat ring (26) that meshes with the drive bevel gear (25) is fixedly installed on the lower wall of the measuring platform (4).

7. The high-speed measuring instrument according to claim 1, characterized in that, The upper wall of the measuring platform (4) is provided with anti-slip texture.

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