Large-diameter workpiece measuring device

Abstract

The utility model belongs to the technical field of measurement, and discloses a large-diameter workpiece measuring device. The device comprises a workbench, V-shaped frames are symmetrically arranged on the surface of the workbench, workpieces are placed on the V-shaped frames, and a measuring assembly is further arranged between the symmetrically-arranged V-shaped frames; the measuring assembly comprises an adjusting seat connected to the surface of the workbench, guide rails are symmetrically arranged on the surface of the adjusting seat in the axial direction of the workpiece, a sliding table is slidably connected to the surfaces of the guide rails, measuring head seats are symmetrically slidably connected to the surface of the sliding table, and a plurality of mounting grooves are evenly formed in the surfaces of the measuring head seats. A measuring head mechanism is arranged in each mounting groove; the measuring head mechanism comprises a measuring head mounting seat connected to the interior of the mounting groove, and a measuring head is connected to the measuring head mounting seat. The whole device is simple in structure, convenient to operate and capable of making corresponding changes according to workpieces with different diameters so as to be matched with the measuring assembly to achieve rapid and accurate measuring work.

Description

Technical Field

[0001] The utility model relates to the technical field of measurement, in particular to a measuring device for large-diameter workpieces. Background Technique

[0002] In the manufacturing industry, the so-called large diameter usually refers to the diameter (or caliber) of a workpiece above φ500mm, and the diameter of some workpieces is more than three meters. For example, hydraulic turbines, steam turbines, large generator sets, large bearing rings, etc. all belong to large-diameter workpieces. Accurately measuring the geometric dimensions of large-diameter workpieces has important value and significance in the process of engineering construction, and often plays a decisive role in ensuring project quality and construction progress.

[0003] In the prior art, generally, large calipers are used for measurement; π rulers are used for measurement; electronic calipers are used for measurement; coordinate machines are used for measurement; the circumference of the measured part is measured by using rollers, and then the diameter is calculated, etc. However, traditional measuring devices often have problems such as complex operation, long measurement time, and low accuracy. Content of the Utility Model

[0004] The purpose of the utility model is to provide a measuring device for large-diameter workpieces to solve the problems of complex operation, long measurement time, and low accuracy in the traditional measuring device proposed in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A measuring device for large-diameter workpieces includes a workbench, V-shaped frames are symmetrically arranged on the surface of the workbench, a workpiece is placed on the V-shaped frames, and a measuring component is also arranged between the symmetrically arranged V-shaped frames;

[0007] The measuring component includes an adjusting seat connected to the surface of the workbench, guide rails are symmetrically arranged along the axial direction of the workpiece on the surface of the adjusting seat, a sliding table is slidably connected to the surface of the guide rails, measuring head seats are symmetrically and slidably connected to the surface of the sliding table, a plurality of mounting grooves are uniformly arranged on the surface of the measuring head seats, and a measuring head mechanism is arranged inside each mounting groove;

[0008] The measuring head mechanism includes a measuring head mounting seat connected to the inside of the mounting groove, and a measuring head is connected to the measuring head mounting seat. The measuring head adopts non-contact measurement technology or contact measurement technology, such as laser ranging, ultrasonic ranging or contact measuring instrument.

[0009] Further preferably, the V-shaped frame includes two symmetrically arranged support roller frames. On the adjacent side surfaces of the support roller frames, a plurality of clamping grooves are symmetrically arranged. Inside the clamping grooves, support rollers are clamped. A first left-right screw rod is connected through the support roller frames. On both sides of the center of the surface of the first left-right screw rod, threads with opposite helix directions are arranged. By rotating the first left-right screw rod, under the action of the threads in opposite directions, the two symmetrically arranged support roller frames can be driven to move inward or to both sides simultaneously, so as to adjust the distance between the two support roller frames, and further cooperate with the support rollers at different positions on the surface of the support roller frames to further meet the support effect on workpieces with different diameters.

[0010] Further preferably, a limiting block is arranged on the surface of the center of one side of the adjusting seat along the axial direction of the workpiece. Inside the limiting block, a driving screw rod is connected through. One end of the driving screw rod passing through the limiting block is connected to the driving end of a driving motor, and the driving screw rod also passes through and is connected to a sliding table. By driving the driving screw rod by the driving motor, the sliding table can be driven to move along the guide rail on the surface of the adjusting seat, so as to measure different positions of a large-diameter workpiece.

[0011] Further preferably, the probe head seat is connected to the track on the surface of the sliding table in a sliding connection manner. A second left-right screw rod is arranged through the bottom of the probe head seat, and bearing seats are connected to both ends of the second left-right screw rod. The second left-right screw rod passes through one of the bearing seats and is connected to the driving end of an adjusting motor. On both sides of the center of the surface of the second left-right screw rod, threads with opposite helix directions are arranged. By driving the second left-right screw rod by the adjusting motor, the symmetrically arranged probe head seats can be driven to move inward or to both sides simultaneously, so as to adjust the distance between the two probe head seats and meet the measurement work of workpieces with different diameters.

[0012] Further preferably, the probe head mechanism further includes a pressing plate connected to the bottom of the probe head mounting seat. Sliding seats are symmetrically arranged at the bottom of the pressing plate. The sliding seats are slidably connected to the guide rails. A transmission screw rod is arranged through the pressing plate. Front bearing seats and rear bearing seats are respectively arranged at both ends of the transmission screw rod. The transmission screw rod passes through the rear bearing seat and is connected to the driving end of a servo motor through a coupling. The front bearing seat, the rear bearing seat and the guide rails are all arranged on the surface of a guide rail seat, and the guide rail seat is arranged inside the mounting groove.

[0013] Further preferably, a grating scale is arranged on one side surface of the guide rail seat, a reading head is arranged outside the grating scale, and the reading head is connected to the side surface of the pressing plate through a reading head support.

[0014] Further preferably, a moving table is further slidably connected to the bottom of the workbench, and the moving table is arranged on the surface of the base.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] In the present utility model, the probe mechanism of the measuring component adopts non-contact measurement technology or contact measurement technology, such as laser ranging, ultrasonic ranging or contact measuring instrument. The non-contact measurement technology, such as laser ranging or ultrasonic ranging, is adopted to reduce the damage to the workpiece and improve the measurement accuracy. Cooperating with the grating scale and the reading head, it can directly and more accurately measure the diameter of the workpiece, and transmit the measured data to the data processing unit through the reading head, which is convenient for calculating the data and displaying the accurate measurement result, and convenient for reading the data. It can also directly adopt contact measurement, such as a contact measuring instrument, to directly measure the workpiece.

[0017] The whole device has a simple structure and is easy to operate. It can make corresponding changes for workpieces with different diameters, so as to cooperate with the measuring component to achieve fast and accurate measurement work. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0019] Figure 2 is a schematic diagram of the V-shaped frame structure of the present utility model;

[0020] Figure 3 is a schematic diagram of the structure of the measuring component of the present utility model;

[0021] Figure 4 is a schematic diagram of the structure of the probe mechanism of the present utility model;

[0022] Figure 5 is a schematic diagram of the overall structure of another embodiment of the present utility model;

[0023] In the figure: 1, workbench; 2, V-shaped frame; 201, support roller frame; 202, first left and right hand screw; 203, support roller; 3, workpiece; 4, measuring component; 401, adjusting seat; 402, sliding table; 403, probe seat; 404, driving lead screw; 405, guide rail; 5, probe mechanism; 501, servo motor; 502, coupling; 503, transmission lead screw; 504, probe mounting seat; 505, probe; 506, front bearing seat; 507, reading head support; 508, reading head; 509, sliding seat; 510, pressing plate; 511, grating scale; 512, guide rail seat; 513, guide rail; 514, rear bearing seat; 6, moving table; 7, base. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figures 1 - 5 , the present invention provides a technical solution:

[0026] A large-diameter workpiece measuring device includes a workbench 1, V-shaped frames 2 symmetrically arranged on the surface of the workbench 1, a workpiece 3 placed on the V-shaped frames 2, and a measuring assembly 4 is also arranged between the symmetrically arranged V-shaped frames 2;

[0027] The measuring assembly 4 includes an adjusting seat 401 connected to the surface of the workbench 1. Guide rails 405 are symmetrically arranged on the surface of the adjusting seat 401 along the axial direction of the workpiece 3. A sliding table 402 is slidably connected to the surface of the guide rails 405. Measuring head seats 403 are symmetrically and slidably connected to the surface of the sliding table 402. A plurality of mounting grooves are evenly arranged on the surface of the measuring head seats 403, and a measuring head mechanism 5 is arranged inside each mounting groove;

[0028] The measuring head mechanism 5 includes a measuring head mounting seat 504 connected to the inside of the mounting groove, and a measuring head 505 is connected to the measuring head mounting seat 504. The measuring head 505 adopts non-contact measurement technology or contact measurement technology, such as laser ranging, ultrasonic ranging or a contact measuring instrument.

[0029] In the present invention, the V-shaped frame 2 includes two symmetrically arranged support roller frames 201. A plurality of card slots are symmetrically arranged on the adjacent side surfaces of the support roller frames 201. Support rollers 203 are clamped inside the card slots. A first left-right screw 202 is connected through between the support roller frames 201. Threads with opposite spiral directions are arranged on both sides of the center of the surface of the first left-right screw 202. By rotating the first left-right screw 202, under the action of the threads in the opposite directions, the two symmetrically arranged support roller frames 201 can be driven to move inward or to both sides at the same time, so as to adjust the distance between the two support roller frames 201, and further cooperate with the support rollers 203 at different positions on the surface of the support roller frames 201 to further meet the support effect on workpieces 3 with different diameters.

[0030] In the present utility model, a limiting block is arranged on the surface at the center of one side of the adjusting base 401 along the axial direction of the workpiece 3. A driving lead screw 404 is connected through the inside of the limiting block. The end of the driving lead screw 404 passing through one side of the limiting block is connected to the driving end of a driving motor, and the driving lead screw 404 is also connected through the sliding table 402. The driving motor drives the driving lead screw 404, thereby driving the sliding table 402 to move along the guide rail 405 on the surface of the adjusting base 401, so as to measure different positions of the large-diameter workpiece 3.

[0031] In the present utility model, the probe head seat 403 is connected to the track on the surface of the sliding table 402 in a sliding connection manner. A second left-right screw is arranged through the bottom of the probe head seat 403, and bearing seats are connected to the ends on both sides of the second left-right screw. The second left-right screw passes through one of the bearing seats and is connected to the driving end of an adjusting motor. Threads with opposite spiral directions are arranged on both sides at the center of the surface of the second left-right screw. The adjusting motor drives the second left-right screw, thereby driving the symmetrically arranged probe head seats 403 to move towards the inside or both sides simultaneously, and further adjusting the distance between the two probe head seats 403 to meet the measurement work for workpieces 3 with different diameters.

[0032] In the present utility model, the probe head mechanism 5 further includes a pressing plate 510 connected to the bottom of the probe head mounting seat 504. Sliding seats 509 are symmetrically arranged at the bottom of the pressing plate 510. The sliding seats 509 are slidably connected to the guide rail 513. A transmission lead screw 503 is arranged through the inside of the pressing plate 510. Front bearing seats 506 and rear bearing seats 514 are respectively arranged at both ends of the transmission lead screw 503. The transmission lead screw 503 passes through the rear bearing seat 514 and is connected to the driving end of a servo motor 501 through a coupling 502. The front bearing seat 506, the rear bearing seat 514 and the guide rail 513 are all arranged on the surface of the guide rail seat 512. The guide rail seat 512 is arranged inside the installation groove. A grating scale 511 is arranged on one side surface of the guide rail seat 512. A reading head 508 is arranged outside the grating scale 511. The reading head 508 is connected to the side surface of the pressing plate 510 through a reading head support 507. The probe head 505 cooperates with the grating scale 511 and the reading head 508, and can directly and more accurately measure the diameter of the workpiece 3, and transmit the measured data to the data processing unit through the reading head 508, which is convenient for calculating the data and displaying accurate measurement results, and convenient for reading the data.

[0033] In the present utility model, a moving table 6 is further slidably connected to the bottom of the workbench 1. The moving table 6 is arranged on the surface of the base 7.

[0034] Embodiment 1: When in use, first adjust the distance between the two support roller frames 203 according to the diameter of the large-diameter workpiece 3 to be measured. By rotating the first left-right screw 202, under the action of the threads in the opposite directions, the two symmetrically arranged support roller frames 201 can be driven to move inward or to both sides simultaneously, so as to adjust the distance between the two support roller frames 201, and further cooperate with the support rollers 203 at different positions on the surface of the support roller frames 201 to support the workpiece 3. Then drive the drive screw 404 through the drive motor, so as to drive the slide table 402 to move along the guide rail 405 on the surface of the adjustment seat 401, so that the probe head seat 403 moves to the position where the workpiece 3 needs to be measured. Then drive the second left-right screw through the adjustment motor, so as to drive the symmetrically arranged probe head seats 403 to move inward or to both sides simultaneously, and further adjust the distance between the two probe head seats 403. Finally, drive the transmission screw 503 through the servo motor 501 under the action of the coupling 502, and further drive the slide seat 509 and the pressing plate 510 to move along the guide rail 513, so as to adjust the positions of the probe head mounting seat 504 and the probe head 505, so that the probe head 505 approaches the surface of the workpiece 3. Thus, in cooperation with the grating scale 511 and the reading head 508, the diameter of the workpiece 3 can be directly and more accurately measured, and the data measured by the reading head 508 is transmitted to the data processing unit, which is convenient for calculating the data and displaying the accurate measurement result, and convenient for reading the data.

[0035] Embodiment 2: Compared with Embodiment 1, the difference of this embodiment is that the workbench 1 can also be directly arranged on the surface of the moving table 6, and the measuring assembly 4 is fixed at the bottom of the moving table 6. During measurement, only the workbench 1 needs to be moved, so as to drive the V-shaped frame 2 and the workpiece 3 to move, so as to cooperate with the fixedly arranged measuring assembly 4 to measure the diameters of different positions of the workpiece 3. The measuring assembly 4 can be adjusted by the method of adjusting the probe head seat 403 and the probe head mechanism 5 in Embodiment 1.

[0036] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model, and any reference signs in the claims should not be regarded as limiting the claims involved.

[0037] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, making equivalent substitutions or changes, shall be covered by the protection scope of the present utility model.

Claims

1. A large diameter workpiece measuring device, comprising a workbench (1), characterized in that: The surface of the workbench (1) is symmetrically provided with V-shaped frames (2), a workpiece (3) is placed on the V-shaped frames (2), and a measuring component (4) is also provided between the symmetrically provided V-shaped frames (2); The measuring assembly (4) comprises an adjusting seat (401) connected to the surface of the workbench (1); a guide rail (405) is symmetrically arranged on the surface of the adjusting seat (401) along the axial direction of the workpiece (3); a slide table (402) is slidably connected to the surface of the guide rail (405); a probe seat (403) is symmetrically slidably connected to the surface of the slide table (402); a plurality of mounting grooves are evenly arranged on the surface of the probe seat (403), and a probe mechanism (5) is arranged inside each mounting groove; The probe mechanism (5) comprises a probe mounting seat (504) connected to the inside of the mounting groove, and a probe (505) is connected to the probe mounting seat (504).

2. A large diameter workpiece measuring device according to claim 1, characterized in that: The V-shaped frame (2) comprises two symmetrically arranged support roller frames (201), a plurality of slots are symmetrically arranged on adjacent side surfaces of the support roller frames (201), support rollers (203) are clamped inside the slots, and a first left-right screw (202) is connected through the support roller frames (201).

3. The large diameter workpiece measuring device according to claim 1, characterized in that: A limit block is provided on the surface at the center of one side of the adjustment seat (401) along the axial direction of the workpiece (3), and a driving screw rod (404) is connected to the inside of the limit block, and the driving screw rod (404) passes through one end of the limit block and is connected to the driving end of the driving motor, and the driving screw rod (404) is also connected to the slide table (402).

4. A large diameter workpiece measuring device according to claim 1, characterized in that: The probe seat (403) is connected to the track on the surface of the slide table (402) by means of a sliding connection. A second left-right rotating screw is provided through the bottom of the probe seat (403), and the ends of both sides of the second left-right rotating screw are connected to bearing seats. The second left-right rotating screw passes through one of the bearing seats and is connected to the driving end of the adjusting motor.

5. The large diameter workpiece measuring device according to claim 1, characterized in that: The probe mechanism (5) also includes a pressure plate (510) connected to the bottom of the probe mounting seat (504), and a slide seat (509) is symmetrically arranged at the bottom of the pressure plate (510), and the slide seat (509) is slidably connected to the guide rail (513). A transmission screw (503) is arranged inside the pressure plate (510), and a front bearing seat (506) and a rear bearing seat (514) are arranged at both ends of the transmission screw (503). The transmission screw (503) passes through the rear bearing seat (514) and is connected to the driving end of the servo motor (501) through a coupling (502). The front bearing seat (506), the rear bearing seat (514) and the guide rail (513) are all arranged on the surface of the guide rail seat (512), and the guide rail seat (512) is arranged inside the mounting groove.

6. A large diameter workpiece measuring device according to claim 5, characterized in that: A grating ruler (511) is arranged on one side surface of the guide rail seat (512), a reading head (508) is arranged on the outside of the grating ruler (511), and the reading head (508) is connected to the side of the pressure plate (510) via a reading head support (507).

7. The large diameter workpiece measuring device according to claim 1, characterized in that: The bottom of the workbench (1) is also slidably connected to a moving platform (6), and the moving platform (6) is arranged on the surface of the base (7).

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