Rod piece outer diameter measuring instrument

Abstract

The invention discloses a rod member outer diameter measuring instrument, and relates to the field of measuring instruments, the rod member outer diameter measuring instrument comprises a base, two sides of the top of the base are provided with a group of transverse moving mechanisms, the tops of the transverse moving mechanisms are provided with a mounting rack, the top of the mounting rack is provided with a first cylinder, and the movable end of the first cylinder is provided with an infrared sensor; a plurality of second air cylinders are installed at the position, located in the middle of the transverse moving mechanism, of the top of the base, supporting blocks are arranged at the tops of the second air cylinders, and infrared distance detection mechanisms are installed on the two sides of the tops of the supporting blocks. According to the invention, the multi-section rod part is matched with the in-place detection mechanism to judge that some sections need to be detected, a signal is sent to the outer diameter detection mechanism, the outer diameter detection mechanism is controlled to be in place and waits for the first cylinder to convey the rod piece to a detection position for detection, so that the detection frequency of the outer diameter of the multi-section rod piece is effectively reduced, and the detection efficiency is improved. And the measurement efficiency is higher.

Description

Technical Field

[0001] The present invention relates to the field of measuring instruments, and specifically to an outer diameter measuring instrument for a rod. Background Art

[0002] In the production and processing of rod-shaped parts, the outer diameter is an important indicator of whether the product meets the production requirements. Therefore, it is necessary to measure the outer diameter of the product to check whether it meets the standard. For different product application fields, some fields have very high requirements for the error precision of the product. Some minor errors will cause the products not to fit well with each other, and thus the finished products will be scrapped.

[0003] The methods for measuring the outer diameter of a rod are usually divided into two types: manual measurement and automatic measurement. Manual measurement is mostly carried out with a vernier caliper. By clamping the measuring part of the vernier caliper on the outside of the rod, the outer diameter of the rod can be measured. Automatic measurement is to place the rod at the measuring position of the measuring machine, and the contact heads on the measuring machine contact the highest point and the lowest point of the rod, and then the outer diameter of the rod can be obtained.

[0004] However, some rod-shaped parts have multiple different outer diameters. In the prior art, when detecting the outer diameter of such products with multiple outer diameters, it is necessary to hold and fix them multiple times and measure them multiple times, which is inconvenient to operate and has low precision. On the measuring machine, it is necessary to repeatedly measure different outer diameter segments of the rod to obtain the corresponding outer diameter dimensions, and the operation is relatively inconvenient. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide an outer diameter measuring instrument for a rod to solve the technical problem that some rod-shaped parts have multiple different outer diameters and are inconvenient to measure.

[0006] To achieve the above purpose, the present invention provides the following technical solution: An outer diameter measuring instrument for a rod, including a base. On both sides of the top of the base, a set of transverse movement mechanisms are installed. On the top of the transverse movement mechanism, an installation frame is provided. On the top of the installation frame, a first cylinder is installed. On the movable end of the first cylinder, an infrared sensor is installed. In the middle of the top of the base and located between a set of transverse movement mechanisms, a plurality of second cylinders are installed. On the top of the second cylinder, a support block is provided. On both sides of the top of the support block, an infrared distance detection mechanism is installed. On one side of the top of the base and located on one side of the second cylinder, a fixed shell is provided. Inside the fixed shell, a plurality of movable plates are movably arranged. On both sides of the fixed shell, a plurality of infrared generators and a plurality of infrared receivers are respectively installed, and each group of infrared generators, infrared receivers and movable plates correspond one by one. On one side of the movable plate, a position detection mechanism is provided. On one side of the fixed shell, a plurality of outer diameter detection mechanisms are installed.

[0007] The present invention is further configured such that the transverse movement mechanism includes a transverse movement motor and a first screw transmission mechanism, the transverse movement motor is installed on the top of the base, the output end of the transverse movement motor is connected to the screw portion of the first screw transmission mechanism, and the mounting frame is movably arranged on the top of the first screw transmission mechanism.

[0008] The present invention is further configured such that a plurality of spring telescopic rods are arranged inside the fixed shell, and the movable ends of the spring telescopic rods are connected to the bottom of the movable plate.

[0009] The present invention is further configured such that the in-place detection mechanism includes an installation groove, a micro cylinder and a positioning block, the side wall of the movable plate is provided with an installation groove, a micro cylinder is installed inside the installation groove, a positioning block is connected to the movable end of the micro cylinder, and a positioning groove is provided on the side wall adjacent to the movable plate.

[0010] The present invention is further configured such that a contact switch is installed on one side of the positioning block.

[0011] The present invention is further configured such that the outer diameter detection mechanism includes multiple drive motors, a second screw transmission mechanism and an outer diameter detection frame, the output end of each drive motor is connected to the screw end of the second screw transmission mechanism, and the outer wall of the second screw transmission mechanism is threadedly connected with the outer diameter detection frame.

[0012] The present invention is further configured such that a through hole is provided on one side of the movable plate, and the shape and size of the through hole match the shape and size of the infrared generator and the infrared receiver.

[0013] The present invention is further configured such that the top of the movable plate is provided with a smooth curved surface.

[0014] In summary, the present invention mainly has the following beneficial effects: the present invention places a multi-section rod-type part on a support block, and an infrared distance detection mechanism on the support block detects whether the rod is in a horizontal state, and the second cylinder adjusts the posture of the rod. After the adjustment is completed, the first cylinder clamps and transports the rod, and during the transportation, it contacts the movable plate, and presses the movable plate downward. At this time, the pressed movable plate blocks the infrared transmission of the infrared generator and the infrared receiver, that is, this is a section of the rod that needs to detect the outer diameter. The detection mechanism in place can determine how many sections need to be detected, and send a signal to the outer diameter detection mechanism. The control mechanism outer diameter detection mechanism is in place, and waits for the first cylinder to transport the rod to the detection position for detection, which effectively reduces the number of detection times of the outer diameter of the multi-section rod and has higher measurement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the rod placement state of the present invention;

[0016] Figure 2 Schematic three-dimensional structure diagram of the rod member of the present invention in the non-placed state;

[0017] Figure 3 Internal structure sectional view of the fixed shell of the present invention;

[0018] Figure 4 Exploded view of the structure of the in-place detection mechanism of the present invention;

[0019] Figure 5 For the present invention Figure 2 Enlarged view of the structure at position A.

[0020] In the figure: 1, base; 2, transverse movement motor; 3, first lead screw transmission mechanism; 4, mounting bracket; 5, first cylinder; 6, infrared sensor; 7, second cylinder; 8, support block; 9, infrared distance detection mechanism; 10, fixed shell; 11, movable plate; 12, infrared generator; 13, infrared receiver; 14, spring telescopic rod; 15, mounting groove; 16, micro cylinder; 17, positioning block; 18, through hole; 19, drive motor; 20, second lead screw transmission mechanism; 21, outer diameter detection frame. Specific embodiments

[0021] 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. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0022] Next, according to the overall structure of the present invention, its embodiments will be described.

[0023] A rod outer diameter measuring instrument, as Figures 1-5 shown, includes a base 1. A plurality of second cylinders 7 are installed on the top of the base 1. A support block 8 is arranged on the top of the second cylinder 7. Infrared distance detection mechanisms 9 are installed on both sides of the top of the support block 8. The support block 8 is V-shaped. When the rod member to be detected is placed on the top of the support block 8, since the outer diameter of each section of the segmented rod member is different, when placed on the top of the support block 8, the entire rod member may not be in a horizontal state. At this time, by adjusting the lifting height of the second cylinder 7, the rod member on the top of the support block 8 is made horizontal, waiting for the subsequent rod member transportation work;

[0024] The horizontal state detection of the rod member is realized by the infrared distance detection mechanism 9. When the rod member is placed on the top of the support block 8, the infrared distance detection mechanism 9 detects the distance from the surface of the rod member. When the distances measured by the infrared distance detection mechanisms 9 on both sides of the support block 8 are the same, it indicates that the rod member is in a horizontal state at this time. The V-shaped support block 8 can ensure that the infrared distance detection mechanisms 9 on both sides can obtain more accurate data.

[0025] A set of transverse movement mechanisms are installed on both sides of the top of the base 1, the second cylinder 7 is installed in the middle of the transverse movement mechanism, a mounting frame 4 is arranged on the top of the transverse movement mechanism, a first cylinder 5 is installed on the top of the mounting frame 4, and an infrared sensor 6 is installed on the movable end of the first cylinder 5. When the rod is leveled, the first cylinder 5 starts to push the movable end out to clamp the rod. The first cylinder 5 will only start when the infrared sensor 6 detects that there is a rod blocking the middle, and the infrared sensor 6 can also detect the distance between the movable end and the rod. By adjusting the telescopic adjustment of the first cylinder 5, the distance between the movable end and the rod is ensured to be equal. At this time, the rod is clamped, and the rod will not be deviated to one side, and it can be transported in the center.

[0026] The transportation of the rod is achieved through a transverse movement mechanism, which includes a transverse movement motor 2 and a first screw transmission mechanism 3. The transverse movement motor 2 is installed on the top of the base 1, and the output end of the transverse movement motor 2 is connected to the screw part of the first screw transmission mechanism 3. The mounting frame 4 is movably arranged on the top of the first screw transmission mechanism 3. When the rod is clamped and ready for transportation, the transverse movement motor 2 is started, and the transverse movement motor 2 drives the first screw transmission mechanism 3 to start working, driving the mounting frame 4 to move toward the outer diameter detection position.

[0027] A fixed shell 10 is provided on the top of the base 1 on one side of the second cylinder 7, and a plurality of movable plates 11 are movably provided inside the fixed shell 10. A plurality of spring telescopic rods 14 are provided inside the fixed shell 10, and the movable ends of the spring telescopic rods 14 are connected to the bottom of the movable plates 11. A smooth arc surface is provided on the top of the movable plates 11. In the transportation path of the rod, the rod will contact the smooth arc surface of the movable plate 11. At this time, the movable plate 11 will be squeezed by the rod to move downward and squeeze the spring telescopic rod 14. The different outer diameter sections of the rod make the descending depths of the plurality of movable plates 11 different.

[0028] A plurality of infrared generators 12 and a plurality of infrared receivers 13 are respectively installed on both sides of the fixed shell 10, and each group of infrared generators 12 and infrared receivers 13 corresponds to the movable plate 11 one by one. A through hole 18 is opened on one side of the movable plate 11, and the shape and size of the through hole 18 match the shape and size of the infrared generator 12 and the infrared receiver 13. In the initial state, the infrared generator 12 sends out an infrared signal, which passes through the through hole 18 and is received by the infrared receiver 13. When the rod member squeezes the movable plate 11, the movable plate 11 moves downward, the through hole 18 is staggered, and the infrared signal sent by the infrared generator 12 can no longer be received by the infrared receiver 13.

[0029] However, since each section of the rod has a certain length, a position detection mechanism is provided on one side of the movable plate 11. The position detection mechanism includes an installation groove 15. The side wall of the movable plate 11 is provided with the installation groove 15. A micro cylinder 16 is installed inside the installation groove 15. The movable end of the micro cylinder 16 is connected to a positioning block 17. The side wall of the adjacent movable plate 11 is provided with a positioning groove. The position detection mechanism includes the installation groove 15, the micro cylinder 16 and the positioning block 17. The side wall of the movable plate 11 is provided with the installation groove 15. A micro cylinder 16 is installed inside the installation groove 15. The movable end of the micro cylinder 16 is connected to a positioning block 17. The side wall of the adjacent movable plate 11 is provided with a positioning groove. After the rod pushes the movable plate 11 down, and at this time the micro cylinder 16 corresponding to the movable plate 11 starts, pushing the positioning block 17 to move forward. When the positioning block 17 can move forward and enter the positioning groove of the adjacent movable plate 11, it indicates that the two movable plates 11 are on the same horizontal line at this time. When the positioning block 17 cannot be inserted into the positioning groove and the contact switch contact is squeezed to emit an electrical signal, it indicates that the two movable plates 11 are not on the same horizontal line, so it also indicates that this is the junction of different outer diameter sections of the rod. Each group of movable plates 11 on the same horizontal line represents an outer diameter section of the rod. Cooperating with the infrared generator 12 and the infrared receiver 13, the number of the outer diameter detection mechanisms required for the rod and the detection positions of each outer diameter section can be quickly located.

[0030] After the number of the outer diameter detection mechanisms required for the rod is obtained, the transverse movement mechanism continues to drive the rod to move transversely until it reaches the detection position of the outer diameter detection mechanism. The outer diameter detection mechanism includes a plurality of drive motors 19, a second lead screw transmission mechanism 20 and an outer diameter detection frame 21. The output end of each drive motor 19 is connected to the lead screw end of the second lead screw transmission mechanism 20. The outer walls of the second lead screw transmission mechanisms 20 are all threadedly connected with the outer diameter detection frame 21. The drive motor 19 drives the second lead screw transmission mechanism 20 to work, transporting the outer diameter detection frame 21 at the top outwards to reach the detection position. The detection position is located by the signals received by the contact switch and the infrared generator 12 and the infrared receiver 13. The signal is sent to the corresponding controller, and the controller then controls the drive motor 19 to start. The outer diameter detection frame 21 is C-shaped. Distance detectors are installed on both the inner top wall and the inner bottom wall of the C-shaped frame. When the rod is located inside the outer diameter detection frame 21, the distance detector obtains the outer diameter of the rod by measuring the distance from the rod.

[0031] At the same time, since the number of the outer diameter detection frames 21 required for the rod has been obtained, several corresponding drive motors 19 will be started accordingly. Each second lead screw transmission mechanism 20 is only threadedly connected to one outer diameter detection frame 21. A through groove for other second lead screw transmission mechanisms 20 is provided on the outer wall of this outer diameter detection frame 21, and the remaining second lead screw transmission mechanisms 20 serve as the guide rods for this outer diameter detection frame 21.

[0032] The detection mechanisms such as the infrared sensor 6, the infrared distance detection mechanism 9, the infrared generator 12, the infrared receiver 13, and the distance detector mentioned in the above mechanism are all prior arts, so no specific description is given to them. Those skilled in the art can easily understand and use the corresponding products. Moreover, the signal sent by the above device to the controller, and the actions driven by the controller for the corresponding mechanism are also common electrical connection mechanisms.

[0033] Although the embodiments of the present invention have been shown and described, the specific embodiments are only explanations of the present invention and not limitations to the invention. The specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

Claims

1. A rod outer diameter measuring instrument, comprising a base (1), characterized in that: A group of transverse movement mechanisms are installed on both sides of the top of the base (1), a mounting frame (4) is provided on the top of the transverse movement mechanism, a first cylinder (5) is installed on the top of the mounting frame (4), an infrared sensor (6) is installed on the movable end of the first cylinder (5), a plurality of second cylinders (7) are installed on the top of the base (1) in the middle of the group of transverse movement mechanisms, a support block (8) is provided on the top of the second cylinder (7), infrared distance detection mechanisms (9) are installed on both sides of the top of the support block (8), and the base (1) A fixed shell (10) is provided at the top on one side of the second cylinder (7), a plurality of movable plates (11) are movably provided inside the fixed shell (10), a plurality of infrared generators (12) and a plurality of infrared receivers (13) are respectively installed on both sides of the fixed shell (10), and each group of infrared generators (12) and infrared receivers (13) corresponds to the movable plate (11) in one-to-one relationship, a position detection mechanism is provided on one side of the movable plate (11), and a plurality of outer diameter detection mechanisms are installed on one side of the fixed shell (10).

2. The rod outer diameter measuring instrument according to claim 1, characterized in that: The transverse movement mechanism comprises a transverse movement motor (2) and a first screw transmission mechanism (3); the transverse movement motor (2) is mounted on the top of the base (1); the output end of the transverse movement motor (2) is connected to the screw part of the first screw transmission mechanism (3); and the mounting frame (4) is movably arranged on the top of the first screw transmission mechanism (3).

3. The rod outer diameter measuring instrument according to claim 1, characterized in that: A plurality of spring telescopic rods (14) are arranged inside the fixed shell (10), and the movable ends of the spring telescopic rods (14) are connected to the bottom of the movable plate (11).

4. The rod outer diameter measuring instrument according to claim 1, characterized in that: The in-position detection mechanism comprises a mounting groove (15), a micro cylinder (16) and a positioning block (17); the side wall of the movable plate (11) is provided with a mounting groove (15); the interior of the mounting groove (15) is provided with a micro cylinder (16); the movable end of the micro cylinder (16) is connected to the positioning block (17); and the side wall adjacent to the movable plate (11) is provided with a positioning groove.

5. The rod outer diameter measuring instrument according to claim 4, characterized in that: A contact switch is installed on one side of the positioning block (17).

6. The rod outer diameter measuring instrument according to claim 1, characterized in that: The outer diameter detection mechanism comprises a plurality of drive motors (19), a second screw transmission mechanism (20) and an outer diameter detection frame (21); the output end of each drive motor (19) is connected to the screw end of the second screw transmission mechanism (20); and the outer wall of the second screw transmission mechanism (20) is threadedly connected to the outer diameter detection frame (21).

7. The rod outer diameter measuring instrument according to claim 1, characterized in that: A through hole (18) is provided on one side of the movable plate (11), and the shape and size of the through hole (18) match the shape and size of the infrared generator (12) and the infrared receiver (13).

8. The rod outer diameter measuring instrument according to claim 1, characterized in that: The top of the movable plate (11) is provided with a smooth curved surface.

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