Precise part dimension measuring device

Abstract

The utility model provides a precise part dimension measuring device, which relates to the technical field of dimension measurement, and comprises a fixed seat, a support rod is fixedly connected on the fixed seat, a fixed assembly is arranged on the fixed seat, the fixed assembly comprises a pneumatic sucker, an inner cavity corresponding to the pneumatic sucker in dimension is arranged on the fixed seat, and the pneumatic sucker is arranged in the inner cavity. The bottom end of the pneumatic suction cup is fixedly connected with a cover plate, the pneumatic suction cup is provided with a first bolt, the first bolt penetrates through the pneumatic suction cup and is fixedly connected with the fixing seat, and the bottom end of the fixing seat is fixedly connected with a ventilation pipe. When the length or width of the irregular shape of the to-be-measured part needs to be measured, the probe rod is moved to the corresponding position, the finger rod is tightly attached to the surface of the to-be-measured part, data are read according to the position pointed by the second sliding block, and the accuracy of the data is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dimension measurement, in particular to a precision part dimension measuring device. Background Art

[0002] Dimension measurement is a tool for measuring the length of an object. Dimensions are also called rulers and scales. They are tools used to draw line segments and measure lengths. There are usually scales on the ruler to measure lengths. Some rulers have special shapes such as letters or circular holes in the middle to facilitate users to draw. They are usually used to measure and calculate lengths. They are generally divided into tape measures, vernier calipers, squares, etc. Rulers are usually made of plastic, iron, stainless steel, plexiglass, etc.

[0003] The existing patent CN215338077U discloses a device for quickly measuring the size of precision mechanical parts. The clamping mechanism fixes the precision part on the chuck, and then moves the fixed plate through the slider. The fixed plate contacts the center of the arc surface of the precision part. At this time, the correct size of the precision part can be measured, thereby reducing the measurement error and improving the measurement accuracy. The clamping claws are provided with three to make the clamping of the precision part more stable. The clamping plate is made of rubber to reduce the risk of damage to the precision part. The sliding part can slide along the chuck, so that the clamping mechanism can clamp precision parts of different sizes. When the fixing part is slid to contact the surface of the precision part, the fastener on the slider is tightened to fix the slider to avoid displacement of the slider, resulting in inaccurate measurement.

[0004] However, in this patent, only the clamping claws and the fixing plate are provided, and only the length of the part to be measured is measured. In addition, this patent cannot guarantee the stability of the part to be measured during measurement. If the depth of the part to be measured is less than the depth of the chuck, at this time, the fixing plate cannot contact the part and cannot measure the degree. At the same time, the rubber splint may still be worn during the clamping process of the clamping claws. Therefore, the utility model proposes a precision part size measuring device. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings in the prior art and to provide a precision parts size measuring device.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a precision part size measuring device, comprising a fixed seat, a support rod is fixedly connected to the fixed seat, a fixing assembly is arranged on the fixed seat, the fixing assembly comprises a pneumatic suction cup, an inner cavity with a size corresponding to the pneumatic suction cup is opened on the fixed seat, a cover plate is fixedly connected to the bottom end of the pneumatic suction cup, a first bolt is arranged on the pneumatic suction cup, the first bolt passes through the pneumatic suction cup and is fixedly connected to the fixed seat, a ventilation pipe is fixedly connected to the bottom end of the fixed seat, an air pump is fixedly connected to one end of the fixed seat away from the pneumatic suction cup, and a measuring assembly is arranged on the support rod;

[0007] The measuring assembly includes a scale, a central fixed block is fixedly connected to the scale, a spring is fixedly connected to the central fixed block, first sliders are fixedly connected to both ends of the spring, the first slider is fixedly connected to a first telescopic rod, the first slider at the other end of the spring is fixedly connected to a second telescopic rod, and a crossbeam is fixedly connected to the support rod.

[0008] As a preferred embodiment, a third slider is movably connected to the crossbeam, a scale is provided on the scale, the support rods are respectively provided at the four corners of the fixed seat, two adjacent support rods are connected by a scale or a crossbeam, two scales are provided, and the other group is movably connected to the crossbeam through the third slider.

[0009] As a preferred embodiment, a groove is provided at one end of the scale, the central fixed block is located at the midpoint of the scale, the midpoint of the spring coincides with the midpoint of the scale, a groove is provided at the end of the scale away from the central fixed block, a second slider is movably connected to the beam, and the second slider is movably connected to the scale in the groove.

[0010] As a preferred embodiment, the number of the fixing components is two groups, one end of the ventilation pipe passes through the bottom end of the fixing seat to the inner cavity opened on the fixing seat, and the other end of the ventilation pipe is fixedly connected to the air pump.

[0011] The beneficial effect of adopting the above further scheme is: setting up two sets of fixing components is to prevent the part to be tested from being too long to ensure the stability of the rear half, resulting in data deviation during measurement. For parts to be tested with appropriate length, it can also enhance stability and improve the credibility of data.

[0012] As a preferred implementation, the fixing seat is provided with second bolts, the second bolts penetrate the fixing seat and are fixedly connected to the desktop, and the number of the second bolts is four.

[0013] The beneficial effect of adopting the above further solution is: enhancing the stability of the device and preventing the device from shaking due to erroneous operation during measurement, thereby affecting the authenticity of the measurement result.

[0014] As a preferred implementation, the scale is movably connected to a probe rod, the probe rod is movably connected to a finger rod, and the scale is fixedly connected to a second telescopic rod via a first telescopic rod.

[0015] The beneficial effect of adopting the above further solution is to prevent the telescopic rod from tilting due to fixing only one side, thereby preventing the measurement data from being affected.

[0016] Compared with the prior art, the advantages and positive effects of the utility model are:

[0017] The utility model is provided with a fixing component and a measuring component. The staff first places the part to be measured on the pneumatic suction cup so that the part to be measured is tightly sucked by the pneumatic suction cup to prevent the device from shaking due to incorrect operation during measurement, thereby affecting the authenticity of the measurement result. The first telescopic rod and the second telescopic rod are pulled apart to both sides, and the first telescopic rod and the second telescopic rod are retracted inward by spring tension until they touch the surface of the part to be measured and stop shrinking. The part to be measured is further reinforced, which greatly enhances the stability of the part to be measured during measurement. When it is necessary to measure the length or width of an irregular shape of the part to be measured, the probe rod is moved to the corresponding position, the finger rod is used to cling to the surface of the part to be measured, and data is read according to the position indicated by the second slider, which greatly increases the accuracy of the data. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of a precision parts size measuring device of the utility model;

[0019] Figure 2 This is a top view of a precision parts size measuring device of the utility model;

[0020] Figure 3 This is a structural diagram of a fixed component in a precision parts dimension measuring device of the utility model;

[0021] Figure 4 The utility model is a structural diagram of a measuring component in a precision parts dimension measuring device.

[0022] Reference numerals

[0023] 1. Fixed seat; 2. Support rod; 3. Crossbeam; 4. Fixed assembly; 41. Pneumatic suction cup; 42. Cover plate; 43. First bolt; 44. Ventilation pipe; 45. Air pump; 5. Measuring assembly; 51. Scale; 52. Center fixing block; 53. Spring; 54. First slider; 55. First telescopic rod; 56. Second telescopic rod; 57. Second slider; 58. Third slider; 6. Probe rod; 7. Second bolt. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example

[0026] like Figure 1 , Figure 2 and Figure 3 As shown, the utility model provides a technical solution: a precision part size measuring device, comprising a fixed seat 1, a support rod 2 is fixedly connected to the fixed seat 1, a fixing assembly 4 is arranged on the fixed seat 1, the fixing assembly 4 comprises a pneumatic suction cup 41, an inner cavity of a size corresponding to the pneumatic suction cup 41 is opened on the fixed seat 1, a cover plate 42 is fixedly connected to the bottom end of the pneumatic suction cup 41, a first bolt 43 is arranged on the pneumatic suction cup 41, the first bolt 43 penetrates the pneumatic suction cup 41 and is fixedly connected to the fixed seat 1, a ventilation pipe 44 is fixedly connected to the bottom end of the fixed seat 1, an end of the fixed seat 1 away from the pneumatic suction cup 41 is fixedly connected to an air pump 45, a measuring assembly 5 is arranged on the support rod 2, and the part to be measured is adsorbed on the pneumatic suction cup 41 by the pressure difference generated by the air in the slot hole opened on the fixed seat 1 being sucked out by the air pump 45, thereby solving the technical problem of wearing the part when the part to be measured is clamped by rubber.

[0027] Furthermore, if Figure 1 - Figure 4 As shown, a third slider 58 is movably connected to the crossbeam 3, a scale 51 is provided with scales, the support rods 2 are respectively provided at the four corners of the fixed seat 1, and two adjacent support rods 2 are connected via the scale 51 or the crossbeam 3. There are two scales 51, and the other group is movably connected to the crossbeam 3 via the third slider 58. The two groups of scales 51 work together with the first telescopic rod 55 and the second telescopic rod 56 to firmly clamp the part to be measured, thereby enhancing the stability of the part to be measured during measurement and increasing the credibility of the measurement data.

[0028] The above solution still has the problem of how to move the first telescopic rod 55 and the second telescopic rod 56 inward without external force. Figure 1 as well as Figure 4 As shown, in this solution, a groove is provided at one end of the scale 51, the central fixed block 52 is at the midpoint of the scale 51, the midpoint of the spring 53 coincides with the midpoint of the scale 51, a groove is provided at one end of the scale 51 away from the central fixed block 52, and a second slider 57 is movably connected to the scale 51, and the second slider 57 is movably connected to the scale 51 in the groove. The two sets of fixed components are provided to prevent the stability of the rear half of the part to be measured from being too long, resulting in deviation of the data during measurement, and the stability of the part to be measured with an appropriate length can also be enhanced to improve the credibility of the data;

[0029] In the above scheme, there is still a problem of how to suck out the slot hole opened on the fixing seat 1, such as Figure 2As shown, in this solution, the number of fixed components 4 is two groups, one end of the vent pipe 44 passes through the bottom end of the fixed base 1 to the inner cavity opened on the fixed base 1, and the other end of the vent pipe 44 is fixedly connected to the air pump 45;

[0030] The above solution also has the problem that the fixing base 1 may tilt during the measurement process. Figure 1 As shown, in the present embodiment, a second bolt 7 is provided on the fixing base 1, the second bolt 7 penetrates the fixing base 1 and is fixedly connected to the desktop, the number of the second bolts 7 is four, a probe rod 6 is movably connected to the scale 51, a finger rod is movably connected to the probe rod 6, the scale 51 is fixedly connected to the second telescopic rod 56 through the first telescopic rod 55 so that the entire measuring device is firmly fixed on the desktop, avoiding the problem of tilting that may be caused during the measurement process.

[0031] Working principle:

[0032] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, when it is needed, the staff first pulls out the first telescopic rod 55 and the second telescopic rod 56, places the part to be tested on the fixing assembly 4, moves the position of the third slider 58 on the crossbeam 3 so that it is close to the other end of the first telescopic rod 55 and the second telescopic rod 56, reads the scale size on the crossbeam 3, and the scale is the length of the part to be tested, turns on the air pump 45, and the gas in the slot hole opened on the fixing seat 1 is sucked out by the air pump 45 through the ventilation pipe 44, so that the part to be tested can be firmly adsorbed on the surface of the pneumatic suction cup 41, and at this time, the first telescopic rod 55 and the second telescopic rod 56 are released, and the spring 46 is released. The spring 53 rebounds and compresses the first telescopic rod 55 and the second telescopic rod 56 inward until they touch the surface of the part to be measured, clamping the part to be measured to prevent the part to be measured from being displaced during measurement and causing errors in the measurement results. At this time, the scales corresponding to the first sliders 54 on both sides of the first telescopic rod 55 and the second telescopic rod 56 on the scale 51 are read, and the difference between the two scale data is the size of the component to be measured. When the size difference of the precision part is to be measured, the probe rod 6 is moved to the corresponding position of the part to be measured, the finger rod is adjusted, and the scale corresponding to the second slider 57 is read. The scale is the size difference of the precision part to be measured.

[0033] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A precision parts dimension measuring device, characterized in that: The invention comprises a fixing seat (1), a support rod (2) being fixedly connected to the fixing seat (1), a fixing assembly (4) being arranged on the fixing seat (1), the fixing assembly (4) comprising a pneumatic suction cup (41), an inner cavity of a size corresponding to that of the pneumatic suction cup (41) being opened on the fixing seat (1), a cover plate (42) being fixedly connected to the bottom end of the pneumatic suction cup (41), a first bolt (43) being arranged on the pneumatic suction cup (41), the first bolt (43) penetrating the pneumatic suction cup (41) and being fixedly connected to the fixing seat (1), a vent pipe (44) being fixedly connected to the bottom end of the fixing seat (1), an air pump (45) being fixedly connected to one end of the fixing seat (1) away from the pneumatic suction cup (41), and a measuring assembly (5) being arranged on the supporting rod (2); The measuring assembly (5) comprises a scale (51), the scale (51) is fixedly connected to a central fixed block (52), the central fixed block (52) is fixedly connected to a spring (53), both ends of the spring (53) are fixedly connected to first sliders (54), the first slider (54) is fixedly connected to a first telescopic rod (55), the first slider (54) at the other end of the spring (53) is fixedly connected to a second telescopic rod (56), and the support rod (2) is fixedly connected to a crossbeam (3).

2. A precision parts dimension measuring device according to claim 1, characterized in that: The crossbeam (3) is movably connected with a third slider (58), the scale (51) is provided with scales, the support rods (2) are respectively arranged at four corners of the fixed seat (1), two adjacent support rods (2) are connected via the scale (51) or the crossbeam (3), the number of the scales (51) is two, and the other group is movably connected to the crossbeam (3) via the third slider (58).

3. A precision parts dimension measuring device according to claim 2, characterized in that: A groove is provided at one end of the scale (51); the central fixed block (52) is located at the midpoint of the scale (51); the midpoint of the spring (53) coincides with the midpoint of the scale (51); a groove is provided at one end of the scale (51) away from the central fixed block (52); a second slider (57) is movably connected to the crossbeam (3); and the second slider (57) is movably connected to the scale (51) in the groove.

4. A precision parts dimension measuring device according to claim 2, characterized in that: The number of the fixing components (4) is two groups, one end of the ventilation pipe (44) passes through the bottom end of the fixing seat (1) to the inner cavity opened on the fixing seat (1), and the other end of the ventilation pipe (44) is fixedly connected to the air pump (45).

5. A precision parts dimension measuring device according to claim 4, characterized in that: The fixing seat (1) is provided with a second bolt (7), the second bolt (7) passes through the fixing seat (1) and is fixedly connected to the desktop, and the number of the second bolts (7) is four.

6. A precision parts dimension measuring device according to claim 3, characterized in that: The scale (51) is movably connected to a probe rod (6), and the probe rod (6) is movably connected to a finger rod. The scale (51) is fixedly connected to a second telescopic rod (56) via a first telescopic rod (55).

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