Rapid positioning base of roundness measuring instrument

Abstract

The utility model provides a rapid positioning base of a roundness measuring instrument, which comprises a bottom plate, moving plates are arranged at two ends of the top of the bottom plate, and clamping blocks are fixedly mounted at the tops of the two moving plates; and the stepping motor is fixedly mounted at the bottom of the bottom plate. According to the rapid positioning base of the roundness measuring instrument provided by the utility model, through mutual cooperation of structures such as the fixed pipe, the mounting cover, the threaded ring, the threaded rod, the abutting plate, the spring and the extension rod, after the rapid positioning base is used for a long time and the elasticity of the spring is reduced, the threaded rod can be rotated, so that the threaded rod is in threaded connection with the inner side surface of the threaded ring; and one end of the threaded rod drives the abutting plate to extrude the spring, the elasticity of the spring is improved, the service life of the spring is prolonged, when the spring needs to be replaced, a user only needs to rotate the mounting cover to take out and replace the spring, and operation is convenient and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of instrument and equipment detection, in particular to a roundness measuring instrument rapid positioning base. Background Art

[0002] The roundness meter is a measuring tool that uses the rotary axis method to measure the roundness error of the workpiece. When measuring the workpiece, a positioning base is required to limit the workpiece.

[0003] For example, the patent application with publication number CN 212158536 U in the prior art comprises a base, an upper support block, a lower support block, a left movable clamping block, a right movable clamping block, an elliptical disk, a tension spring, a left guide rail, a right guide rail, and a stepper motor. The upper support block and the lower support block are respectively fixed to the upper and lower sides of the base, the left guide rail and the right guide rail are respectively fixed to the left and right sides of the base, the left and right movable clamping blocks slide in cooperation with the left and right guide rails, the stepper motor is fixed to the bottom of the base, and its output end passes through the base and is connected to the bottom of the elliptical disk. The circumference of the elliptical disk contacts and cooperates with rollers respectively arranged at the bottom of the left and right movable clamping blocks, and the two ends of the tension spring are respectively connected to the left and right movable clamping blocks. This device replaces the three-jaw chuck, has a simple overall structure, can quickly clamp and position metal parts, and will not damage the metal surface.

[0004] However, after using the device for a period of time, the elasticity of the tension spring is easily reduced and the workpiece cannot be clamped. The tension spring needs to be replaced immediately, thereby reducing the service life of the tension spring. In addition, the tension spring is in a tight state after installation, which is inconvenient for the staff to replace.

[0005] Therefore, it is necessary to provide a roundness measuring instrument quick positioning base to solve the above technical problems. Utility Model Content

[0006] The utility model provides a quick positioning base for a roundness measuring instrument, which solves the problems that a tension spring with reduced elasticity needs to be replaced immediately, which reduces the service life of the tension spring, and that it is inconvenient for staff to replace the tension spring when the tension spring is in a taut state.

[0007] In order to solve the above technical problems, the utility model provides a roundness measuring instrument rapid positioning base, comprising:

[0008] A bottom plate, with movable plates provided at both ends of the top of the bottom plate, and clamping blocks fixedly installed on the tops of the two movable plates;

[0009] A stepper motor, the stepper motor is fixedly mounted on the bottom of the base plate, a driving wheel is fixedly mounted on the output end of the stepper motor, and the driving wheel is arranged between the two movable plates;

[0010] A fixing plate, wherein the fixing plates are respectively fixedly mounted on both ends of the top of the base plate, a fixing tube is fixedly mounted inside the fixing plate, an extension rod is slidably connected inside the fixing tube, one end of the extension rod is fixedly mounted on the side of the clamping block, and the outer side surface of the other end of the fixing tube is threadedly connected to a mounting cover, a threaded ring is fixedly mounted on one side of the mounting cover, and a threaded rod is threadedly connected to the inner side surface of the threaded ring, one end of the threaded rod is rotatably connected to an abutment plate, a spring is provided on one side of the abutment plate, and one end of the spring abuts against the end face of the extension rod.

[0011] Preferably, slide rails are fixedly installed on both sides of the top ends of the bottom plate, and the bottoms of the two movable plates are slidably connected to the outer sides of the slide rails.

[0012] Preferably, a roller is rotatably connected to the interior of one side of the movable plate, and the side surface of the roller abuts against the side surface of the driving wheel.

[0013] Preferably, a rotating handle is fixedly mounted on the other end of the threaded rod.

[0014] Preferably, the outer side surface of the extension rod is in contact with the inner side surface of the fixing tube.

[0015] Preferably, the abutment plate and the spring are both arranged on the inner side surface of the fixing tube.

[0016] Preferably, a protective pad is fixedly mounted on the side of the clamping block.

[0017] Compared with related technologies, the quick positioning base of a roundness measuring instrument provided by the present invention has the following beneficial effects:

[0018] The utility model provides a quick positioning base for a roundness measuring instrument, which cooperates with each other through structures such as a fixing tube, a mounting cover, a threaded ring, a threaded rod, an abutment plate, a spring and an extension rod. After long-term use, when the elasticity of the spring decreases, the threaded rod can be rotated to be threadedly connected to the inner side of the threaded ring, so that one end of the threaded rod drives the abutment plate to squeeze the spring, which not only increases the elasticity of the spring but also increases the service life of the spring. When the spring needs to be replaced, the user only needs to rotate the mounting cover to take out and replace the spring, which is convenient and quick to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of a first embodiment of a quick positioning base of a roundness measuring instrument provided by the utility model;

[0020] Figure 2 for Figure 1 Another perspective structural diagram shown;

[0021] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure of the fixed pipe shown;

[0022] Figure 4 This is a structural schematic diagram of a second embodiment of a roundness measuring instrument rapid positioning base provided by the utility model.

[0023] Numbers in the figure: 1. Base plate, 2. Slide rail, 21. Moving plate, 22. Clamping block, 23. Roller, 3. Stepper motor, 31. Push wheel, 4. Fixed plate, 41. Fixed tube, 42. Mounting cover, 43. Threaded ring, 44. Threaded rod, 45. Turning handle, 46. Abutment plate, 47. Spring, 48. Extension rod, 5. Protective pad. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and implementation examples.

[0025] First embodiment

[0026] Please refer to Figure 1 、 Figure 2 、 Figure 3 ,in, Figure 1 This is a structural schematic diagram of a first embodiment of a quick positioning base of a roundness measuring instrument provided by the utility model; Figure 2 for Figure 1 Another perspective structural diagram shown; Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure of the fixed tube is shown. A quick positioning base of a roundness measuring instrument comprises: a base plate 1, a movable plate 21 is provided at both ends of the top of the base plate 1, and a clamping block 22 is fixedly installed on the top of each of the two movable plates 21;

[0027] A stepper motor 3 is fixedly mounted on the bottom of the base plate 1 , and a driving wheel 31 is fixedly mounted on the output end of the stepper motor 3 , and the driving wheel 31 is arranged between the two movable plates 21 ;

[0028] The fixing plate 4 is fixedly mounted on both ends of the top of the base plate 1, and a fixing tube 41 is fixedly mounted inside the fixing plate 4, and an extension rod 48 is slidably connected inside the fixing tube 41, and one end of the extension rod 48 is fixedly mounted on the side of the clamping block 22, and the outer side surface of the other end of the fixing tube 41 is threadedly connected to a mounting cover 42, and a threaded ring 43 is fixedly mounted on one side of the mounting cover 42, and a threaded rod 44 is threadedly connected to the inner side surface of the threaded ring 43, and one end of the threaded rod 44 is rotatably connected to an abutment plate 46, and a spring 47 is provided on one side of the abutment plate 46, and one end of the spring 47 abuts against the end face of the extension rod 48.

[0029] Slide rails 2 are fixedly installed on both sides of the top of the bottom plate 1 , and the bottoms of the two movable plates 21 are slidably connected to the outer side surfaces of the slide rails 2 .

[0030] There are four slide rails 2, and the inner side of each movable plate 21 is slidably connected to two slide rails. When the movable plate 21 moves, it slides on the outer side of the slide rail 2, thereby increasing the stability of the movable plate 21 when moving.

[0031] A roller 23 is rotatably connected to the interior of one side of the movable plate 21 , and a side surface of the roller 23 abuts against a side surface of the pushing wheel 31 .

[0032] The pushing wheel 31 is in contact with the roller 23 , so that the pushing wheel 31 can be prevented from directly rubbing against the moving plate 21 . The pushing wheel 31 is elliptical in shape.

[0033] A rotating handle 45 is fixedly mounted on the other end of the threaded rod 44 .

[0034] The setting of the rotating handle 45 can facilitate the user to rotate the threaded rod 44 during use.

[0035] The outer side surface of the extension rod 48 is in contact with the inner side surface of the fixing tube 41 .

[0036] The abutting plate 46 and the spring 47 are both disposed on the inner side of the fixing tube 41 .

[0037] The working principle of the quick positioning base of the roundness measuring instrument provided by the utility model is as follows:

[0038] When in use, the user places the workpiece between the two clamping blocks 22, and then starts the stepper motor 3, so that the stepper motor 3 drives the pushing wheel 31 to rotate. At this time, the elasticity of the spring 47 pushes the extension rod 48, and the extension rod 48 pushes the clamping block 22, so that the roller 23 fits on the side of the pushing wheel 31, and the elasticity of the spring 47 makes the clamping block 22 clamp the workpiece to a limited position;

[0039] After long-term use, when the elasticity of the spring 47 decreases, the user can rotate the handle 45 so that the handle 45 drives the threaded rod 44 to be threadedly connected to the inner side of the thread ring 43, so that one end of the threaded rod 44 drives the abutment plate 46 to squeeze the spring 47, thereby increasing the service life of the spring 47.

[0040] Compared with related technologies, the quick positioning base of a roundness measuring instrument provided by the present invention has the following beneficial effects:

[0041] By cooperating with each other, structures such as the fixing tube 41, the mounting cover 42, the threaded ring 43, the threaded rod 44, the abutment plate 46, the spring 47 and the extension rod 48, after long-term use, when the elasticity of the spring 47 decreases, the threaded rod 44 can be rotated so that the threaded rod 44 is threadedly connected to the inner side of the threaded ring 43, so that one end of the threaded rod 44 drives the abutment plate 46 to squeeze the spring 47, which not only increases the elasticity of the spring 47, but also increases the service life of the spring 47. When the spring 47 needs to be replaced, the user only needs to rotate the mounting cover 42 to take out and replace the spring 47, which is convenient and quick to operate.

[0042] Second embodiment

[0043] Please refer to Figure 4 Based on the first embodiment of this application, which provides a quick positioning base for a roundness measuring instrument, the second embodiment of this application provides another quick positioning base for a roundness measuring instrument. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0044] Specifically, the second embodiment of the present application provides a quick positioning base for a roundness measuring instrument. The difference is that, in a quick positioning base for a roundness measuring instrument, a protective pad 5 is fixedly installed on the side of the clamping block 22 .

[0045] The working principle of the quick positioning base of the roundness measuring instrument provided by the utility model is as follows:

[0046] When in use, when the two clamping blocks 22 clamp and limit the workpiece, the protective pad 5 can be in contact with the workpiece, thereby protecting the workpiece and avoiding wear of the workpiece.

[0047] Compared with related technologies, the quick positioning base of a roundness measuring instrument provided by the present invention has the following beneficial effects:

[0048] By installing the protective pad 5 on the side of the clamping block 22, the clamping block 22 can be prevented from directly contacting the workpiece during use, thereby protecting the workpiece.

[0049] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A quick positioning base for a roundness measuring instrument, characterized in that: include: A bottom plate, with movable plates provided at both ends of the top of the bottom plate, and clamping blocks fixedly installed on the tops of the two movable plates; A stepper motor, the stepper motor is fixedly mounted on the bottom of the base plate, a driving wheel is fixedly mounted on the output end of the stepper motor, and the driving wheel is arranged between the two movable plates; A fixing plate, wherein the fixing plates are respectively fixedly mounted on both ends of the top of the base plate, a fixing tube is fixedly mounted inside the fixing plate, an extension rod is slidably connected inside the fixing tube, one end of the extension rod is fixedly mounted on the side of the clamping block, and the outer side surface of the other end of the fixing tube is threadedly connected to a mounting cover, a threaded ring is fixedly mounted on one side of the mounting cover, and a threaded rod is threadedly connected to the inner side surface of the threaded ring, one end of the threaded rod is rotatably connected to an abutment plate, a spring is provided on one side of the abutment plate, and one end of the spring abuts against the end face of the extension rod.

2. The roundness measuring instrument quick positioning base according to claim 1, characterized in that: Slide rails are fixedly installed on both sides of the top of the bottom plate, and the bottoms of the two movable plates are slidably connected to the outer sides of the slide rails.

3. The roundness measuring instrument quick positioning base according to claim 2, characterized in that: A roller is rotatably connected to the interior of one side of the movable plate, and a side surface of the roller abuts against a side surface of the driving wheel.

4. The roundness measuring instrument rapid positioning base according to claim 3, characterized in that: A rotating handle is fixedly mounted on the other end of the threaded rod.

5. The roundness measuring instrument rapid positioning base according to claim 4, characterized in that: The outer side surface of the extension rod is in contact with the inner side surface of the fixing tube.

6. The roundness measuring instrument rapid positioning base according to claim 5, characterized in that: The abutting plate and the spring are both arranged on the inner side surface of the fixing tube.

7. The roundness measuring instrument rapid positioning base according to claim 1, characterized in that: A protective pad is fixedly installed on the side of the clamping block.

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