Triangular circle measuring instrument

Abstract

The utility model discloses a triangular circle measuring instrument, and belongs to the technical field of measuring instruments. Comprising a V-shaped support arranged on one side of a base; the measuring meter is arranged on the other side of the base; the workpiece supporting rod is located on the inner side of the V-shaped support, vertically penetrates through the base in a sliding mode and abuts against the outer surface of the to-be-detected workpiece; and two ends of the lever are respectively connected with the workpiece supporting rod and the measuring meter supporting rod. According to the utility model, measurement data is amplified through the lever and is reflected on the measurement meter, so that better feedback is obtained; and the rotating hand wheel is arranged, so that the pressing wheel linked with the rotating hand wheel drives the workpiece to rotate, and measurement errors can be better avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring instruments, in particular to a triangular circle measuring instrument. Background Art

[0002] The roundness of the cylindrical or tubular workpiece that is being finely machined needs to be controlled. At this time, instruments are needed to assist in the measurement. For example, the patent with application number "CN2018101747547" discloses a roundness and cylindricity measuring device, which adjusts the angle between the laser detector and the horizontal direction to realize the circular shape deviation detection of the annular protrusion of the cylindrical product to be measured. The patent with application number "CN2021220135100" discloses a pipe ring roundness measuring device, which uses the least squares circle fitting method to calculate the true roundness of the pipe ring. The patent with application number "CN2018207933959" discloses a roundness and cylindricity shape measuring instrument, which can adjust the probe position to facilitate measurement and can fix irregular cylinders of different sizes. The patent with application number "CN2023104916675" discloses a non-circularity measuring device and a measuring method, which adapts to the non-circularity measurement of the pipes to be tested with different outer diameters by changing the spacing between the second moving wheel and the fixed wheel.

[0003] The above-mentioned public solutions and various roundness measuring instruments on the market may meet certain requirements. However, in actual use, the actual accuracy of laser measurement is often difficult to meet the requirements, and the accuracy is also limited if the measurement is directly performed using a measuring head.

[0004] Therefore, the applicant designed a triangular circle measuring instrument based on the experience and needs of daily processing, which can achieve high-precision measurement with a simple physical structure. Utility Model Content

[0005] The utility model aims to solve the problem that the device for measuring roundness in the prior art can be further improved, and proposes a triangular circle measuring instrument.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A triangular circle measuring instrument, comprising:

[0008] A V-shaped support provided on one side of the base;

[0009] A measuring table is provided on the other side of the base;

[0010] Located on the inner side of the V-shaped support, it vertically slides through the base and touches the workpiece support rod on the outer surface of the workpiece to be measured;

[0011] and a lever with two ends respectively connected to a workpiece support rod and a measuring table support rod.

[0012] In some embodiments, a vertical rod is provided at the lower part of the base, and a pin shaft is passed through the vertical rod and rotatably assembled with the middle section of the lever.

[0013] In some embodiments, the lever is a flat plate-like structure, and a first strip-shaped opening is provided at its middle section;

[0014] The vertical rod penetrates downward through the long strip opening, and the pin shaft horizontally penetrates the long strip opening.

[0015] In some embodiments, the position of the vertical rod is adjustable to form different length ratios at both ends of the lever.

[0016] In some embodiments, a plurality of mounting positions corresponding to the top ends of the vertical rods are provided on the lower top surface of the base.

[0017] In some embodiments, a spherical ball is provided at the top end of the workpiece support rod.

[0018] In some embodiments, the mounting position is a threaded seat or a threaded hole;

[0019] A thread is provided at the top end of the vertical rod.

[0020] In some embodiments, second strip-shaped openings are respectively provided at both ends of the lever, and inwardly communicating chutes are provided on both sides horizontally corresponding to the second strip-shaped openings; sliding shafts are respectively assembled with openings at the lower ends of the workpiece support rod and the measuring instrument support rod; the workpiece support rod and the measuring instrument support rod penetrate downward through the second strip-shaped openings; and the sliding shafts are placed in the chutes and slide therein.

[0021] In some embodiments, a vertical guiding slideway adapted to the workpiece support rod and the measuring instrument support rod is provided at the lower end of the base.

[0022] In some embodiments, there are two V-shaped supports provided through slide rails; the lower ends of the V-shaped supports are slidably clamped with the slide rails, and a tightening screw is provided on the side.

[0023] In some embodiments, the included angle of the V-shaped support is 120°.

[0024] In some embodiments, it further includes: a pressing wheel located above the V-shaped support;

[0025] The pressing wheel is in contact with the workpiece to be measured and drives it to rotate.

[0026] In some embodiments, a hand wheel is provided on the outer side of the pressing wheel.

[0027] In some embodiments, it further includes: a guiding groove vertically arranged above the base;

[0028] An extension plate is vertically and slidably arranged in the guiding groove;

[0029] A clamping seat is assembled at the front end of the extension plate;

[0030] The pressing wheel is installed in the clamping seat.

[0031] Compared with the prior art, the present utility model provides a triangular circle measuring instrument, which has the following beneficial effects.

[0032] 1. In the present utility model, the measurement data is amplified by a lever and reflected on the measuring table to obtain better feedback.

[0033] 2. In the present utility model, a rotating handwheel is provided, and the pressing wheel linked therewith is used to drive the workpiece to rotate, which can better avoid measurement errors.

[0034] Other advantages, objectives and features of the present utility model will be described to some extent in the subsequent specification; and to some extent, based on the study of the following text, it will be obvious to those skilled in the art; or, teachings can be obtained from the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is the first axonometric schematic diagram of the present utility model.

[0036] Figure 2 is the second axonometric schematic diagram of the present utility model.

[0037] Figure 3 is the lower side structure schematic diagram of the present utility model.

[0038] Figure 4 is the sectional structure schematic diagram of the present utility model.

[0039] Figure 5 is the sectional side view of the present utility model in a sectional state.

[0040] Figure 6 is the schematic diagram of the cooperation state of the lever.

[0041] Figure 7 is the partial structure schematic diagram of the base.

[0042] Figure 8 is the lower part structure schematic diagram of the base.

[0043] Figure 9 is the exploded state schematic diagram of the base.

[0044] In the figure:

[0045] 1. Base;

[0046] 11. Vertical rod; 12. Pin shaft; 13. Vertical guiding slideway; 14. Adjusting support foot;

[0047] 2. V-shaped support;

[0048] 21. Slide rail; 22. Tightening screw;

[0049] 3. Measuring gauge;

[0050] 4. Workpiece support rod;

[0051] 41. Convex ring; 42. Spring;

[0052] 5. Measuring gauge support rod;

[0053] 6. Lever;

[0054] 61. First strip-shaped opening; 62. Second strip-shaped opening; 63. Slide groove; 64. Slide shaft;

[0055] 7. Pressing wheel; 71. Handwheel;

[0056] 8. Guide groove;

[0057] 9. Extension plate;

[0058] 91. Clamping seat;

[0059] 100. Workpiece to be measured. Specific embodiments

[0060] 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.

[0061] Refer to Figures 1-9 , a triangular circular measuring instrument, comprising:

[0062] A V-shaped support 2 provided on one side of the base 1;

[0063] A measuring gauge 3 provided on the other side of the base 1;

[0064] A workpiece support rod 4 located inside the V-shaped support 2, vertically sliding through the base 1, and touching the outer surface of the workpiece to be measured 100;

[0065] And a lever 6 with both ends respectively connected to the workpiece support rod 4 and the measuring gauge support rod 5.

[0066] During use, the workpiece 100 to be measured is placed on the V-shaped support 2, and the workpiece 100 to be measured presses against the top end of the workpiece support rod 4; the workpiece 100 to be measured is rotated. If there are protrusions or depressions, the workpiece support rod 4 will rise or fall accordingly; at the same time, the rising or falling state is amplified by the lever 6 and transmitted to the measuring instrument support rod 5; the measuring instrument support rod 5 then transmits it to the measuring instrument 3, and the pointer swings, enabling an intuitive understanding of the workpiece condition; moreover, in this device, the lever 6 is used for amplification, and higher sensitivity can be obtained.

[0067] In some embodiments, a vertical rod 11 is provided at the lower part of the base 1, and a pin shaft 12 is passed through the vertical rod 11 and rotatably assembled with the middle position of the lever 6.

[0068] Specifically, the lever 6 is a flat plate-shaped structure, and a first rectangular opening 61 is provided at its middle position; the vertical rod 11 penetrates downward through the first rectangular opening 61, and the pin shaft 12 horizontally penetrates the first rectangular opening 61.

[0069] As shown in Figure 3 、 4 、5, and 6; through the cooperation of the vertical rod 11 and the pin shaft 12, a support hinge point for the lever 6 is formed; the changes at both ends are transmitted.

[0070] Furthermore, the position of the vertical rod 11 can be adjusted to form different force application and force receiving length ratios at both ends of the lever; thereby, different magnifications are formed.

[0071] It can be understood that in this device, the change of the workpiece support rod 4 needs to be amplified; correspondingly, it is necessary to control that "the length from the force application point on one side of the workpiece support rod 4 to the lever hinge point" is less than "the length from the force receiving point on the other side to the lever hinge point".

[0072] Preferably, a plurality of installation positions corresponding to the top ends of the vertical rods 11 are provided on the lower top surface of the base 1 for replacing the installation of the vertical rods 11.

[0073] Among them, the installation position is a threaded seat or a threaded hole; correspondingly, the top end of the vertical rod 11 is provided with a thread.

[0074] In some embodiments, second rectangular openings 62 are respectively provided at both ends of the lever 6, and inwardly communicating chutes 63 are provided on both sides horizontally corresponding to the second rectangular openings 62; sliding shafts 64 are respectively assembled with openings at the lower ends of the workpiece support rod 4 and the measuring instrument support rod 5; the workpiece support rod 4 and the measuring instrument support rod 5 penetrate downward through the second rectangular openings 62; the sliding shafts 64 are placed in the chutes 63 and slide.

[0075] During use, when the workpiece support rod 4 and the measuring instrument support rod 5 slide vertically, the sliding shafts 64 slide in the chutes 63 to avoid interference.

[0076] Correspondingly, a vertical guiding slideway 13 adapted to the workpiece support rod 4 and the measuring gauge support rod 5 is provided at the lower end of the base 1.

[0077] As Figure 4 , 5 , shown in Figures 8 and 9, to restrict and ensure the vertical movement of the workpiece support rod 4 and the measuring gauge support rod 5.

[0078] In some embodiments, a spherical ball is provided at the top end of the workpiece support rod 4.

[0079] Thus, the contact point with the workpiece 100 to be measured can be reduced, and better sensitivity can be achieved.

[0080] In some embodiments, in the normal state, the workpiece support rod 4 bounces upward so that it can always contact the workpiece 100 to be measured.

[0081] Specifically, a convex ring 41 is provided at the upper end position of the workpiece support rod 4, and a spring 42 is sleeved thereon.

[0082] Correspondingly, the top end of the spring 42 abuts against the lower end of the convex ring 41, and the lower end of the spring 42 abuts against the base 1, pushing the workpiece support rod 4 upward.

[0083] In some embodiments, there are two V-shaped supports 2 arranged through slide rails 21 to provide support for workpieces of different lengths and ensure stable and balanced support.

[0084] Specifically, the lower end of the V-shaped support 2 is slidably clamped with the slide rail 21.

[0085] Preferably, a tightening screw 22 is provided on the side surface of the lower end of the V-shaped support 2 for position locking.

[0086] Preferably, the included angle of the V-shaped support 2 is 120°; the workpiece is placed relatively stably.

[0087] In some embodiments, it further includes: a pressure wheel 7 located above the V-shaped support 2.

[0088] The pressure wheel 7 is brought into contact with the workpiece 100 to be measured and drives it to rotate; the stability during rotation can be improved, and measurement errors can be better avoided.

[0089] Preferably, the pressure wheel 7 is a rubber wheel, and a handwheel 71 is coaxially arranged on its outer side.

[0090] During use, the handwheel 71 is operated to drive the rubber wheel, and the handwheel 71 and the rubber wheel are installed on one shaft.

[0091] In some embodiments, it further includes: a guiding groove 8 vertically arranged above the base 1; thus, the height of the pressure wheel 7 can be conveniently adjusted to adapt to the workpiece 100 to be measured.

[0092] Specifically, an extension plate 9 is vertically and slidably arranged in the guiding groove 8; a clamping seat 91 is assembled at the front end of the extension plate 9; and the pressing wheel 7 is installed in the clamping seat 91.

[0093] Preferably, the guiding groove 8 is a wedge-shaped groove, and a wedge-shaped block corresponding thereto is arranged at the end of the extension plate 9.

[0094] When the utility model is in use, the measurement data is reflected on the measuring table 3 through the lever 6; if higher requirements are imposed on the triangular circle of the workpiece to be measured, the length ratio of the two ends of the lever fulcrum can be adjusted to amplify the measurement data, so as to obtain better feedback; at the same time, in order to prevent the problem of unstable manual rotation of the workpiece 100 to be measured, a rotating handwheel 71 is provided, and the pressing wheel 7 linked thereto is used to drive the rotation of the workpiece, which can better avoid measurement errors.

[0095] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the utility model, according to the technical solution of the utility model and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the utility model.

[0096] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without conflict, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples.

[0097] Although the embodiments of the utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the utility model.

Claims

1. A triangular circular measuring instrument, characterized in that, Comprising: A V-shaped support (2) provided on one side of the base (1); A measuring gauge (3) provided on the other side of the base (1); A workpiece support rod (4) located at the inner side of the V-shaped support (2), vertically sliding through the base (1) and abutting against the outer surface of the workpiece to be measured (100); And a lever (6) with both ends respectively connected to the workpiece support rod (4) and the measuring gauge support rod (5).

2. The triangulation instrument according to claim 1, wherein A vertical rod (11) is provided at the lower part of the base (1), and a pin shaft (12) is inserted through the vertical rod (11) and rotatably assembled with the middle position of the lever (6).

3. The triangulation instrument according to claim 2, characterized in that, The position of the vertical rod (11) is adjustable to form different length ratios at both ends of the lever.

4. The triangular circle measuring instrument according to claim 1, characterized in that, Second strip-shaped openings (62) are respectively formed at both ends of the lever (6), and sliding grooves (63) communicating inward are formed on both sides horizontally corresponding to the second strip-shaped openings (62); sliding shafts (64) are respectively assembled with holes at the lower ends of the workpiece support rod (4) and the measuring gauge support rod (5); the workpiece support rod (4) and the measuring gauge support rod (5) penetrate downward through the second strip-shaped openings (62); and the sliding shafts (64) are placed in the sliding grooves (63) and slide therein.

5. The triangulation instrument according to claim 1 or 4, characterized in that, Vertical guide chutes (13) adapted to the workpiece support rod (4) and the measuring gauge support rod (5) are formed at the lower end of the base (1).

6. The triangular circle measuring instrument according to claim 1, characterized in that, A spherical ball is provided at the top end of the workpiece support rod (4).

7. The triangular circle measuring instrument according to claim 1, characterized in that, Two V-shaped supports (2) are provided through slide rails (21); the lower ends of the V-shaped supports (2) are slidably clamped with the slide rails (21), and a tightening screw (22) is provided on the side.

8. The triangulation instrument according to claim 1, characterized in that, The included angle of the V-shaped support (2) is 120°.

9. The triangulation instrument according to claim 1, wherein Further comprising: A pressure wheel (7) located above the V-shaped support (2); The pressure wheel (7) is in contact with the workpiece to be measured (100) and drives it to rotate.

10. The triangulation instrument according to claim 9, characterized in that, Further comprising: A guide groove (8) vertically arranged above the base (1); An extension plate (9) is vertically slidably arranged in the guide groove (8); A clamping seat (91) is assembled at the front end of the extension plate (9); The pressure wheel (7) is installed in the clamping seat (91).

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