Auxiliary positioning jig of quadratic element image measuring instrument

Abstract

The utility model provides an auxiliary positioning jig of a quadratic element image measuring instrument, which comprises a measuring instrument body, a clamp shell arranged at the upper end of the measuring instrument body, fixing blocks symmetrically arranged inside the clamp shell, a push rod arranged between the two fixing blocks in a sliding manner, inclined blocks symmetrically arranged on two sides of the push rod, two sets of connecting rods are symmetrically arranged in the clamp shell and hinged to the two sides of the push rod correspondingly, first rolling wheels are rotationally arranged at the ends, close to the inclined blocks, of the connecting rods, second rolling wheels are rotationally arranged at the other ends of the connecting rods, and third rolling wheels are rotationally arranged at the ends, close to the second rolling wheels, of the push rod. The measuring instrument body is provided with a driving mechanism used for driving the clamp shell to reciprocate in the vertical direction. The height of the clamp shell can be conveniently controlled by arranging the hydraulic cylinder so as to adapt to workpieces of different heights, the push rod can be conveniently driven to reciprocate by arranging the air cylinder, and then the included angle formed between the second roller and the third roller can be adjusted so as to adapt to the workpieces of different sizes.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring instruments, in particular to an auxiliary positioning fixture of a two-dimensional image measuring instrument. Background Art

[0002] The 2D image measuring instrument, also known as an image surveying instrument or a 2D image measuring instrument, is a high-precision measuring device based on CCD digital imaging technology. It is an upgraded product of the traditional projector, integrating optical, mechanical, electrical, and computer image processing technologies, overcoming the limitations of early projectors and providing a more accurate and efficient 2D dimension measurement solution.

[0003] Two-dimensional image measuring instruments are widely used in size inspection and contour measurement of precision parts. Their measurement accuracy and efficiency directly affect product quality control. Traditional positioning fixtures often have a single structure and complex adjustment, making it difficult to achieve fast and accurate positioning, which affects measurement efficiency and accuracy. Therefore, it is particularly important to develop an auxiliary positioning fixture with a novel structure, easy operation and precise positioning. Utility Model Content

[0004] The purpose of the utility model is to provide an auxiliary positioning fixture for a two-dimensional image measuring instrument, aiming to solve the problem that traditional positioning fixtures in the prior art often have a single structure, complex adjustment, and difficulty in achieving fast and accurate positioning, which affects measurement efficiency and accuracy.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an auxiliary positioning fixture of a two-dimensional image measuring instrument, comprising a measuring instrument body, a fixture shell is arranged on the upper end of the measuring instrument body, fixed blocks are symmetrically arranged inside the fixture shell, a push rod is slidably arranged between the two fixed blocks, inclined blocks are symmetrically arranged on both sides of the push rod, two groups of connecting rods are symmetrically arranged inside the fixture shell, and are respectively hingedly installed on both sides of the push rod, a first roller is rotatably arranged on one end of the connecting rod close to the inclined block, a second roller is rotatably arranged on the other end of the connecting rod, a third roller is rotatably arranged on one end of the push rod close to the second roller, and a driving mechanism for driving the fixture shell to move back and forth vertically is arranged on the measuring instrument body.

[0006] Preferably, the driving mechanism includes a support frame and a hydraulic cylinder, the support frame is fixedly arranged on the upper end of the measuring instrument body, and the clamp shell is movably arranged inside the support frame, and a hydraulic cylinder is arranged on the upper end of the support frame. The output end of the hydraulic cylinder passes through the support frame and is connected to the upper end of the clamp shell for driving the clamp shell to move.

[0007] Preferably, the first roller is in contact with the inclined surface of the inclined block.

[0008] Preferably, the second roller is arranged farther than the third roller.

[0009] Preferably, a supporting leg is provided at the lower end of the measuring instrument body.

[0010] Preferably, a cylinder is provided on one side of the clamp shell, and an output end of the cylinder passes through the interior of the clamp shell and is connected to one end of the push rod.

[0011] The beneficial effects of the utility model are:

[0012] When the utility model is in use, the height of the clamp shell is conveniently controlled by arranging a hydraulic cylinder, so as to adapt to workpieces of different heights; by arranging an air cylinder, it is convenient to drive the push rod to move back and forth, and then simultaneously adjust the angle formed between the second roller and the third roller to be suitable for workpieces of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of a specific embodiment of the utility model.

[0014] Figure 2 It is a front view cross-sectional structural diagram of a clamp shell according to a specific embodiment of the utility model.

[0015] Figure 3 It is a specific embodiment of the utility model Figure 1 Schematic diagram of the structure at A in the middle.

[0016] In the figure: 1. measuring instrument body; 2. fixture shell; 3. push rod; 4. inclined block; 5. third roller; 6. connecting rod; 7. first roller; 8. second roller; 9. support frame; 10. driving mechanism; 11. supporting leg. DETAILED DESCRIPTION

[0017] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings.

[0018] like Figure 1-3 As shown, an auxiliary positioning fixture of a two-dimensional image measuring instrument comprises a measuring instrument body 1, a fixture shell 2 is arranged on the upper end of the measuring instrument body 1, fixed blocks are symmetrically arranged inside the fixture shell 2, a push rod 3 is slidably arranged between the two fixed blocks, inclined blocks 4 are symmetrically arranged on both sides of the push rod 3, two groups of connecting rods 6 are symmetrically arranged inside the fixture shell 2, and are respectively hingedly installed on both sides of the push rod 3, a first roller 7 is rotatably arranged on one end of the connecting rod 6 close to the inclined block 4, a second roller 8 is rotatably arranged on the other end of the connecting rod 6, a third roller 5 is rotatably arranged on one end of the push rod 3 close to the second roller 8, and a driving mechanism 10 for driving the fixture shell 2 to move back and forth vertically is arranged on the measuring instrument body 1.

[0019] In this embodiment, when measuring the workpiece, the hydraulic cylinder is first started to control the movement of the clamp shell 2 to the same height as the workpiece. At this time, the workpiece is moved between the three rollers, and the cylinder is started to pull the push rod 3 to move. The first roller 7 on the connecting rod 6 rolls on the inclined surface of the inclined block 4, driving the two connecting rods 6 to rotate, so that the same ends of the two connecting rods 6 are close to each other, so that the second roller 8 and the third roller 5 clamp and position the workpiece.

[0020] like Figure 1 As shown, the driving mechanism 10 includes a support frame 9 and a hydraulic cylinder. The support frame 9 is fixedly arranged at the upper end of the measuring instrument body 1, and the clamp shell 2 is movably arranged inside the support frame 9. A hydraulic cylinder is arranged at the upper end of the support frame 9. The output end of the hydraulic cylinder passes through the support frame 9 and is connected to the upper end of the clamp shell 2 for driving the clamp shell 2 to move.

[0021] In this embodiment, a hydraulic cylinder is provided to facilitate the control of the height of the clamp housing 2 so as to accommodate workpieces of different heights.

[0022] like Figure 1 As shown, the first roller 7 is in contact with the inclined surface of the inclined block 4 .

[0023] In this embodiment, when the inclined block 4 moves following the pull rod, the first roller 7 rolls in contact with the inclined surface of the inclined block 4, driving the connecting rod 6 to rotate.

[0024] like Figure 1 As shown, the second roller 8 is arranged farther than the third roller 5 .

[0025] In this embodiment, the second roller 8 is arranged farther than the third roller 5 to form a triangular clamping space, thereby improving the clamping applicability.

[0026] like Figure 1 As shown, a supporting leg 11 is provided at the lower end of the measuring instrument body 1 .

[0027] In this embodiment, the stability of the measuring instrument body 1 is increased by providing support legs 11 .

[0028] like Figure 1 As shown, a cylinder is provided on one side of the clamp shell 2 , and the output end of the cylinder passes through the inside of the clamp shell 2 and is connected to one end of the push rod 3 .

[0029] In this embodiment, a cylinder is provided to facilitate driving the push rod 3 to move back and forth, thereby adjusting the angle formed between the second roller 8 and the third roller 5 at the same time.

[0030] Working principle: When measuring the workpiece, first start the hydraulic cylinder to control the movement of the clamp shell 2 to the same height of the workpiece. At this time, by moving the workpiece between the three rollers, start the cylinder to pull the push rod 3 to move, and the first roller 7 on the connecting rod 6 rolls on the inclined surface of the inclined block 4, driving the two connecting rods 6 to rotate, so that the same ends of the two connecting rods 6 are close to each other, so that the second roller 8 and the third roller 5 clamp and position the workpiece. By setting up the cylinder, it is convenient to drive the push rod 3 to move back and forth, and then adjust the angle formed between the second roller 8 and the third roller 5 at the same time to suit workpieces of different sizes.

[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0032] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An auxiliary positioning fixture for a two-dimensional image measuring instrument, characterized in that: The measuring instrument comprises a measuring instrument body (1), wherein a fixture shell (2) is arranged at the upper end of the measuring instrument body (1), a fixing block is symmetrically arranged inside the fixture shell (2), a push rod (3) is slidably arranged between the two fixing blocks, and inclined blocks (4) are symmetrically arranged on both sides of the push rod (3), two groups of connecting rods (6) are symmetrically arranged inside the fixture shell (2), and are respectively hingedly mounted on both sides of the push rod (3), a first roller (7) is rotatably arranged at one end of the connecting rod (6) close to the inclined block (4), a second roller (8) is rotatably arranged at the other end of the connecting rod (6), and a third roller (5) is rotatably arranged at one end of the push rod (3) close to the second roller (8), and a driving mechanism (10) for driving the fixture shell (2) to move back and forth vertically is arranged on the measuring instrument body (1).

2. The auxiliary positioning fixture of the two-dimensional image measuring instrument according to claim 1 is characterized in that: The driving mechanism (10) comprises a support frame (9) and a hydraulic cylinder, wherein the support frame (9) is fixedly arranged at the upper end of the measuring instrument body (1), and the fixture shell (2) is movably arranged inside the support frame (9), and a hydraulic cylinder is arranged at the upper end of the support frame (9), and the output end of the hydraulic cylinder passes through the support frame (9) and is connected to the upper end of the fixture shell (2) for driving the fixture shell (2) to move.

3. The auxiliary positioning fixture of the two-dimensional image measuring instrument according to claim 1 is characterized in that: The first roller (7) fits in contact with the inclined surface of the inclined block (4).

4. The auxiliary positioning fixture of the two-dimensional image measuring instrument according to claim 1 is characterized in that: The second roller (8) is arranged farther than the third roller (5).

5. The auxiliary positioning fixture of the two-dimensional image measuring instrument according to claim 1 is characterized in that: A supporting leg (11) is provided at the lower end of the measuring instrument body (1).

6. The auxiliary positioning fixture of the two-dimensional image measuring instrument according to claim 1, characterized in that: A cylinder (12) is provided on one side of the clamp shell (2), and an output end of the cylinder (12) passes through the interior of the clamp shell (2) and is connected to one end of the push rod (3).

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