Automatic detection device of length comparator

Abstract

The utility model discloses an automatic detection device for a length comparator, which comprises a base and a digital display dial indicator, the digital display dial indicator is mounted at the left end of the upper side of the base, the upper end of the base is connected with a detection mechanism, the detection mechanism comprises side plates fixedly connected to the front and rear ends of the upper side of the base, and the right end of the upper side of the base is fixedly connected with a bottom plate. A first threaded rod is connected into the bottom plate, and a first handle is welded to the right end of the first threaded rod. According to the automatic detection device for the length comparator, when a workpiece is measured, a first handle is rotated to enable a first threaded rod to rotate to drive a positioning plate to move rightwards to the rightmost end of the upper side of a base, then the workpiece is placed on the upper side of the base, and then the first handle is rotated reversely to enable the positioning plate to move leftwards to drive the workpiece to move leftwards; and after the workpiece moves to contact with the detection plate, the detection rod in the digital display dial indicator is pushed to move leftwards and then stops, and then the digital display dial indicator is reset.

Description

Technical Field

[0001] The utility model relates to the technical field of length comparison, in particular to an automatic detection device for a length comparator. Background Art

[0002] A comparator is a length measuring tool that uses the relative method. It primarily consists of a micrometer and a comparator base. During measurement, gauge blocks are first ground together to create a set of gauge blocks equal to the basic dimension being measured. This set of gauge blocks is then used to zero the micrometer pointer. The workpiece being measured is then placed on the comparator base. The micrometer pointer indicates the deviation of the measured dimension.

[0003] Existing length comparator equipment is expensive, has high measurement costs, is bulky and heavy, is inconvenient to install and maintain, cannot be moved at any time, and is inconvenient to operate, making it unsuitable for on-site production testing.

[0004] For example, Chinese patent CN203772175U discloses a digital length comparison measuring instrument, in which a lifting cap is threadedly connected to the left end of a digital micrometer measuring rod into one piece; the digital micrometer is mounted on the left measuring claw of the caliper body assembly by a fastening screw; the digital micrometer measuring head is fixedly mounted on the other end of the digital micrometer measuring rod and connected into one piece, and has the functions of a digital micrometer measuring head and the left measuring head of a caliper; the right measuring head of the caliper is fixedly mounted on the measuring claw of the caliper frame assembly, and serves as the right measuring head of the caliper, so that the length comparison measuring instrument has the advantages of simple structure, convenient operation, fast measurement, easy movement and installation, and low environmental requirements. It can be widely used in precision detection of large workpiece production sites, and is particularly suitable for high-precision measurement of large workpieces caused by thermal expansion and contraction, drying shrinkage and wet expansion.

[0005] However, this comparison measuring instrument does have a positioning function, and cannot guarantee that the positions of the two ends of each measured workpiece contacting the measuring head are the same. For irregular workpieces, the distances between the different positions of the two ends are different. If it cannot be guaranteed that the positions of the two ends of each measured workpiece contacting the measuring head are the same, the detection results will be inaccurate.

[0006] For this reason, we urgently need to provide a length comparator automatic detection device that can be positioned when the workpiece is installed. Utility Model Content

[0007] The purpose of the present invention is to provide an automatic detection device for a length comparator to solve the problems raised in the above background technology.

[0008] To achieve the above purpose, the utility model provides the following technical solutions: an automatic detection device for a length comparator, comprising a base and a digital dial indicator, the digital dial indicator being mounted on the upper left end of the base, and a detection mechanism being connected to the upper end of the base.

[0009] The detection mechanism includes side plates fixedly connected to the front and rear ends of the upper side of the base, the upper right end of the base is fixedly connected to the bottom plate, the inside of the bottom plate is connected to a first threaded rod, the right end of the first threaded rod is welded to a first handle, the left end of the first threaded rod is fixedly connected to a bearing on the outside, a positioning plate is installed on the left end of the bearing, the right end of the detection rod of the digital micrometer is fixedly connected to the detection plate, the right end of the inside of the side plate is connected to a second threaded rod, the end of the second threaded rod away from the base is welded to a second handle, the other end of the second threaded rod is fixedly connected to a positioning head, and a disassembly and assembly unit is provided at the upper left end of the base.

[0010] A further improvement is that the disassembly and assembly unit includes a limit frame fixedly connected to the upper left end of the base, a spring is fixedly connected to the front and rear sides of the inner top of the limit frame, the lower end of the spring is fixedly connected to a ring, the inner side of the ring is fixedly connected to an insertion rod, and the front and rear ends of the outer side of the digital micrometer are symmetrically fixed with fixed blocks.

[0011] A further improvement is that a first threaded hole is opened in the middle position inside the base plate, and the outer side of the first threaded rod is threadedly connected to the inner side of the first threaded hole, so that when the first handle rotates and drives the first threaded rod in the first threaded hole to rotate, the first threaded rod can move relative to the base plate.

[0012] A further improvement is that the lower sides of the positioning plate and the detection plate are slidably connected to the upper side of the base, and the adjacent sides of the positioning plate and the detection plate abut against both ends of the workpiece.

[0013] A further improvement is that second threaded holes are opened at equal distances at the right end inside the side panel, and the outer side of the second threaded rod is threadedly connected to the inner side of the second threaded hole, so that when the second handle is rotated so that the second threaded rod is located in the second threaded hole and rotates, the second threaded rod will move relative to the side panel at the same time.

[0014] A further improvement is that the end of the positioning head away from the second threaded rod abuts against different positions at the front and rear ends of the workpiece, so that after the length comparator and the digital micrometer are initialized, the second handle is turned to move the second threaded rod and drive the positioning head to different positions at the front and rear ends of the outside of the workpiece, so as to locate the position of the subsequent workpiece to be compared during inspection and installation.

[0015] A further improvement is that sliding holes are opened at the front and rear ends of the limit frame, and the outer side of the insertion rod is slidably connected to the inner side of the sliding hole, so that when the insertion rod moves, it can only slide along the inner side of the sliding hole.

[0016] A further improvement is that a socket is provided inside the fixed block, the upper side of the base and the top inner side of the limit frame are slidably connected to the upper and lower sides of the digital dial indicator, and the outer side of the lower end of the insertion rod is plugged into the inner side of the socket, so that after the lower end of the insertion rod moves down to the socket inserted into the fixed block, the fixed block can be fixed, so that the digital dial indicator can be fixed to the left end of the upper side of the base.

[0017] In summary, the present application discloses an automatic detection device for a length comparator.

[0018] This technical solution, after initializing the length comparator and the digital micrometer, rotate the second handle to move the second threaded rod to drive the positioning head to different positions at the front and rear ends of the outside of the workpiece, and position the subsequent workpieces to be compared during inspection and installation, to ensure that when each workpiece is measured, the positioning plate and the positioning head restrict each workpiece to the same position on the upper side of the base, thereby ensuring the accuracy of the inspection.

[0019] Furthermore, after the digital dial indicator is slid to the inside of the limit frame, the ring and the insertion rod are driven downward by the spring until the lower end of the insertion rod moves down to the insertion hole inside the fixed block. The fixed block can be fixed, so that the digital dial indicator can be fixed to the left end of the upper side of the base, which makes it very convenient to disassemble and assemble the digital dial indicator, so that it can be disassembled and repaired when the digital dial indicator is damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the bottom plate of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the side panel of the present utility model;

[0023] Figure 4 This is a structural diagram of the disassembly and assembly unit of the utility model.

[0024] In the figure: 1. Base; 2. Digital micrometer; 301. Side panel; 302. Bottom panel; 303. First threaded rod; 304. First handle; 305. Bearing; 306. Positioning plate; 307. Inspection plate; 308. Second threaded rod; 309. Second handle; 310. Positioning head; 401. Limiting frame; 402. Spring; 403. Ring; 404. Insert rod; 405. Fixing block. DETAILED DESCRIPTION

[0025] In order to make the technical solution of the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] See also Figures 1-4 The utility model provides a technical solution: an automatic detection device for a length comparator, comprising a base 1 and a digital micrometer 2, the digital micrometer 2 being mounted on the upper left end of the base 1, and the upper end of the base 1 being connected to a detection mechanism.

[0027] The detection mechanism includes a side plate 301 fixedly connected to the front and rear ends of the upper side of the base 1, and a bottom plate 302 is fixedly connected to the upper right end of the base 1. A first threaded rod 303 is connected to the inside of the bottom plate 302, and a first handle 304 is welded to the right end of the first threaded rod 303. A first threaded hole is opened in the middle position inside the bottom plate 302, and the outer side of the first threaded rod 303 is threadedly connected to the inner side of the first threaded hole, so that when the first handle 304 rotates and drives the first threaded rod 303 in the first threaded hole to rotate, the first threaded rod 303 can move relative to the bottom plate 302.

[0028] The left end of the first threaded rod 303 is fixedly connected to the outer side of the first threaded rod 303, and the left end of the bearing 305 is installed with a positioning plate 306. The right end of the detection rod of the digital micrometer 2 is fixedly connected to the detection plate 307. The lower sides of the positioning plate 306 and the detection plate 307 are slidably connected to the upper side of the base 1, and the adjacent sides of the positioning plate 306 and the detection plate 307 abut against the two ends of the workpiece, so that by first rotating the first handle 304 to rotate the first threaded rod 303 and drive the positioning plate 306 to move right to the rightmost end of the upper side of the base 1, and then place the workpiece on the upper side of the base 1, and then reverse the first handle 304 to make the positioning plate 306 move left and drive the workpiece to move left, until the workpiece moves to contact the detection plate 307 and then pushes the detection rod inside the digital micrometer 2 to move left and stop. At this time, the digital micrometer 2 is cleared to complete the initialization of the length comparator.

[0029] A second threaded rod 308 is connected to the right end of the inside of the side panel 301, and a second handle 309 is welded to the end of the second threaded rod 308 away from the base 1. Second threaded holes are opened at equal distances at the right end of the inside of the side panel 301, and the outer side of the second threaded rod 308 is threadedly connected to the inner side of the second threaded hole. Therefore, when the second handle 309 is rotated so that the second threaded rod 308 is located in the second threaded hole and rotates, the second threaded rod 308 will move relative to the side panel 301, and the positioning head 310 will move together.

[0030] The other end of the second threaded rod 308 is fixedly connected to a positioning head 310, and the positioning head 310 is in contact with different positions at the front and rear ends of the workpiece at one end away from the second threaded rod 308. After the length comparator and the digital micrometer 2 are initialized, the second handle 309 is turned to move the second threaded rod 308 to drive the positioning head 310 to move to different positions at the front and rear ends of the outside of the workpiece, and to locate the position of the subsequent workpiece to be compared during inspection and installation, so as to ensure that when each workpiece is measured, the positioning plate 306 and the positioning head 310 limit each workpiece to the same position on the upper side of the base 1, thereby ensuring the accuracy of the inspection.

[0031] A disassembly unit is provided at the upper left end of the base 1, and the disassembly unit includes a limit frame 401 fixedly connected to the upper left end of the base 1, and a spring 402 is fixedly connected to the front and rear sides of the top inner side of the limit frame 401, and a ring 403 is fixedly connected to the lower end of the spring 402, and an insertion rod 404 is fixedly connected to the inner side of the ring 403. Sliding holes are provided at the front and rear ends of the limit frame 401, and the outer side of the insertion rod 404 is slidably connected to the inner side of the sliding hole, so that when the spring 402 drives the ring 403 to move, when the insertion rod 404 moves, it can only slide along the inner side of the sliding hole, thereby limiting the movement of the insertion rod 404.

[0032] The front and rear ends of the outer side of the digital micrometer 2 are symmetrically fixed with fixed blocks 405, and a socket is provided inside the fixed block 405. The upper side of the base 1 and the top inner side of the limit frame 401 are slidably connected to the upper and lower sides of the digital micrometer 2, and the outer side of the lower end of the insertion rod 404 is plugged into the inner side of the socket. After the digital micrometer 2 is slid to the inner side of the limit frame 401, the spring 402 is used to drive the ring 403 and the insertion rod 404 to move downward until the lower end of the insertion rod 404 moves down to the socket inside the fixed block 405. The fixed block 405 can be fixed, so that the digital micrometer 2 can be fixed to the left end of the upper side of the base 1, which makes it very convenient to disassemble and assemble the digital micrometer 2, so that it can be disassembled and repaired when the digital micrometer 2 is damaged.

[0033] Working principle: When measuring a workpiece, first rotate the first handle 304 to rotate the first threaded rod 303 and drive the positioning plate 306 to move right to the rightmost end of the upper side of the base 1, then place the workpiece on the upper side of the base 1, then reverse the first handle 304 to move the positioning plate 306 to the left and drive the workpiece to move left, until the workpiece moves to the contact detection plate 307, then push the detection rod inside the digital micrometer 2 to move left and stop, then clear the digital micrometer 2 to complete the initialization of the length comparator, and then rotate the second threaded rod 308 to The second threaded rod 308 rotates to drive the positioning head 310 to move to the front and rear ends of the outer side of the workpiece, then take out the workpiece, and pull the lifting cap on the left end of the digital micrometer 2 to the right to drive the detection rod to move left so that the detection plate 307 moves left together, and the workpiece to be compared is placed between the positioning plate 306 and the positioning head 310 on the upper side of the base 1, and then loosen the lifting cap on the outer end of the digital micrometer 2, and the detection rod and the detection plate 307 move to the right to contact the left end of the workpiece to be compared. At this time, the measurement value displayed by the digital micrometer 2 is the comparative difference in length of the two workpieces.

[0034] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A length comparator automatic detection device, comprising a base (1) and a digital dial indicator (2), wherein the digital dial indicator (2) is mounted on the upper left end of the base (1), characterized in that: The upper end of the base (1) is connected to a detection mechanism; The detection mechanism comprises a side plate (301) fixedly connected to the front and rear ends of the upper side of the base (1); the upper right end of the base (1) is fixedly connected to a bottom plate (302); a first threaded rod (303) is connected inside the bottom plate (302); a first handle (304) is welded to the right end of the first threaded rod (303); a bearing (305) is fixedly connected to the outer side of the left end of the first threaded rod (303); a positioning plate (306) is installed on the left end of the bearing (305); the right end of the detection rod of the digital micrometer (2) is fixedly connected to the detection plate (307); the inner right end of the side plate (301) is connected to a second threaded rod (308); a second handle (309) is welded to the end of the second threaded rod (308) away from the base (1); the other end of the second threaded rod (308) is fixedly connected to a positioning head (310); and a disassembly unit is provided at the upper left end of the base (1).

2. The automatic detection device of a length comparator according to claim 1, characterized in that: The disassembly unit comprises a limit frame (401) fixedly connected to the left end of the upper side of the base (1); a spring (402) is fixedly connected to the front and rear sides of the inner top of the limit frame (401); a ring (403) is fixedly connected to the lower end of the spring (402); an insert rod (404) is fixedly connected to the inner side of the ring (403); and a fixing block (405) is symmetrically fixedly connected to the front and rear ends of the outer side of the digital micrometer (2).

3. The automatic detection device of a length comparator according to claim 1, characterized in that: A first threaded hole is provided in the middle of the bottom plate (302), and the outer side of the first threaded rod (303) is threadedly connected to the inner side of the first threaded hole.

4. The automatic detection device for a length comparator according to claim 1, characterized in that: The lower sides of the positioning plate (306) and the detection plate (307) are slidably connected to the upper side of the base (1), and the adjacent sides of the positioning plate (306) and the detection plate (307) abut against both ends of the workpiece.

5. The automatic detection device for a length comparator according to claim 1, characterized in that: Second threaded holes are provided at equal distances on the right end of the inner side of the side plate (301), and the outer side of the second threaded rod (308) is threadedly connected to the inner side of the second threaded hole.

6. The automatic detection device for a length comparator according to claim 1, characterized in that: One end of the positioning head (310) away from the second threaded rod (308) abuts against different positions of the front and rear ends of the workpiece.

7. The automatic detection device for a length comparator according to claim 2, characterized in that: Sliding holes are provided at the front and rear ends of the limiting frame (401), and the outer side of the insertion rod (404) is slidably connected to the inner side of the sliding hole.

8. The automatic detection device for a length comparator according to claim 2, characterized in that: A socket is provided inside the fixed block (405), the upper side of the base (1) and the inner top of the limit frame (401) are slidably connected to the upper and lower sides of the digital dial gauge (2), and the outer side of the lower end of the insertion rod (404) is plugged into the inner side of the socket.

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