CN216205995U

CN216205995U - Self-centering hole position and groove size measuring device

Info

Publication number: CN216205995U
Application number: CN202122395527.7U
Authority: CN
Inventors: 兰公炜
Original assignee: Ningxia Shinri Changcheng Machine Tool Co ltd
Current assignee: Ningxia Shinri Changcheng Machine Tool Co ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-04-05
Anticipated expiration: 2031-09-30

Abstract

The utility model discloses a self-centering hole site and groove size measuring device which comprises a V-shaped magnetic base, a V-shaped magnetic shield plate and a measuring assembly, wherein the V-shaped magnetic shield plate is arranged at the top of the V-shaped magnetic base; the measuring assembly comprises a fixed ruler, a movable ruler, a base ruler, a replaceable measuring head and a digital display mechanism, the fixed ruler is installed in the center of the top of the V-shaped magnetism isolating plate, the movable ruler is connected inside the fixed ruler in a sliding mode, the base ruler is connected to the front end of the fixed ruler in a sliding mode and perpendicular to the movable ruler, the replaceable measuring head is detachably installed at the front end of the movable ruler, and the digital display mechanism is used for displaying measured values. The utility model can realize measurement by self-centering, has accurate positioning and convenient operation, is beneficial to measuring hole-groove parts with special structures, solves the problem of inevitable interference between the measurement of the traditional measuring tool and the parts, simplifies the measurement process, reduces errors and effectively improves the measurement precision and efficiency.

Description

Self-centering hole position and groove size measuring device

Technical Field

The utility model belongs to the technical field of measurement, and particularly relates to a self-centering hole site and groove size measuring device.

Background

The detection method of mechanical parts is to detect the size precision, shape precision and position precision of the parts by using measuring tools and instruments, and the method is the most applied and basic detection method. The measurement contents comprise the measurement of geometric elements of points, lines and surfaces, the linear dimension, the diameter dimension, the wall thickness dimension and the hole spacing are mainly detected by using measuring tools such as a vernier caliper, an inner diameter gauge and the like, the production requirement can be basically met by using a conventional measuring tool in the machining part, but the requirements cannot be met by using the conventional measuring tool and the method when the high-precision complex-shaped part with a plurality of holes is machined and measured.

At present, in the prior art, the measurement of parts with low hole center distance precision and simple structure can be generally met through the conventional caliper, and a measured value can be obtained through direct measurement and indirect calculation. However, when the existing caliper is used for measurement, certain requirements are placed on observation of hole positions and stability and a measurement method of a measurer holding the caliper, certain measurement errors exist, if on-line measurement is possible, due to different space positions of parts, the space positions of the measurer need to be adjusted, and measurement cannot be limited if necessary. Meanwhile, a general measuring tool can meet general production requirements, but the detection of hole and groove parts with special structures is limited by a caliper angle structure, and has disadvantages, such as the measurement of unequal-diameter hole center distances, the measurement of center distances with deeper hole site depths and the measurement of deep groove hole diameters, and the production requirements cannot be well met, because the measuring tool may interfere with the parts and cannot measure the parts on one hand, and the detection tool and the combined measuring tool need to support on the other hand, the measurement process is complicated, the problems of error accumulation, deviation from the true value of measurement precision and the like are easily caused by repeated measurement in the process, and the requirement on quality of detection personnel is relatively high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of overcoming the defects of the prior art and provides a self-centering hole position and groove size measuring device which can realize measurement by self-centering, is beneficial to measuring hole groove parts with special structures, solves the problem of interference between the measurement of the traditional measuring tool and the parts, simplifies the measuring process, reduces errors and effectively improves the measuring precision and efficiency.

In order to solve the technical problems, the technical scheme of the utility model is as follows:

a self-centering hole site and groove size measuring device comprises a V-shaped magnetic base, a V-shaped magnetic shield plate arranged at the top of the V-shaped magnetic base and a measuring assembly arranged on the V-shaped magnetic shield plate; the measuring assembly comprises a fixed ruler, a movable ruler, a base ruler, a replaceable measuring head and a digital display mechanism, the fixed ruler is installed in the center of the top of the V-shaped magnetism isolating plate, the movable ruler is connected inside the fixed ruler in a sliding mode, the base ruler is connected to the front end of the fixed ruler in a sliding mode and perpendicular to the movable ruler, the replaceable measuring head is detachably installed at the front end of the movable ruler, and the digital display mechanism is used for displaying measured values.

Further, the replaceable measuring head is a hole site measuring head.

Further, the hole site gauge head comprises a gauge head mounting seat detachably mounted at the front end of the movable ruler and a conical gauge head in threaded connection with the gauge head mounting seat.

Further, the replaceable measuring head is a groove measuring head.

Furthermore, the digital display mechanism comprises a capacitive grating sensor arranged on the movable scale and an electronic display screen arranged on the surface of the fixed scale.

Furthermore, a pressing plate for stabilizing and sizing is further arranged on the V-shaped magnetism isolating plate.

By adopting the technical scheme, the utility model has the following beneficial effects:

1. according to the utility model, the V-shaped magnetic base is adsorbed on the outer diameter surface of the part to be measured, so that the movable ruler and the replaceable measuring head are automatically aligned to the circle center of the part, the self-centering measurement is realized, the positioning is accurate and stable, the operation is convenient, the errors caused by manual holding and human eye positioning are reduced, the measurement process is simplified, and the measurement efficiency is improved. Meanwhile, a base ruler capable of being adjusted in a sliding mode is used as a zero reference surface for measurement, so that the part is enabled to be attached to and tangent with the base ruler surface, the moving ruler and the replaceable measuring head are matched to move to position and measure a point position to be measured, a measured value is displayed through a digital display mechanism, required data are obtained through calculation, relative measurement and absolute measurement are combined in the whole measuring and calculating process, the purpose of conveniently measuring the sizes of a hole groove, a hole distance and a hole center distance of the part in a special structure is achieved, the measuring efficiency is high, and the method has a positive effect on surveying and mapping of parts maintained on site.

2. Compared with a general measuring tool, the measuring tool can measure hole-groove parts with special structures, relative measurement is completed through the matching of the base ruler and a single replaceable measuring head, the problem of inevitable interference between the traditional measuring tool and the parts is solved, the measuring steps and the accumulation of errors are reduced, and the measuring precision is further improved. The setting of interchangeable gauge head convenient to detach changes, can use different gauge heads as required for measuring range is more extensive, if use the hole site gauge head can measure unequal diameter centre of a hole distance, with the hole site gauge head extension processing can measure the darker centre-to-centre spacing of hole site degree of depth promptly, use the slot gauge head can measure deep groove aperture etc..

3. The hole site gauge head disclosed by the utility model adopts the cooperation of the gauge head mounting seat and the conical gauge head, the cone at the bottom end of the conical gauge head is convenient for positioning the circle centers of holes, the measurement precision is improved, the hole site gauge head can be suitable for holes with different sizes, the conical gauge head can be designed to have different lengths so as to adapt to hole site measurement with various depths, the deep hole site center distance measurement cannot interfere, and the measurement convenience is increased.

4. The digital display mechanism of the utility model utilizes the linear capacitive grating sensor to be matched with the fixed scale, the movable scale and the base scale so as to realize relative measurement, and displays the measured value through the electronic display screen, thereby improving the measurement sensitivity and being convenient for a measurer to directly observe the reading.

Drawings

FIG. 1 is a schematic structural diagram according to a first embodiment of the present invention;

FIG. 2 is a side view of a first embodiment of the present invention;

FIG. 3 is a measurement state diagram according to a first embodiment of the present invention;

FIG. 4 is a schematic structural diagram according to a second embodiment of the present invention;

FIG. 5 is a diagram illustrating a measurement status according to a second embodiment of the present invention;

the device comprises a V-shaped magnetic base, a magnetic bearing and a magnetic bearing, wherein the V-shaped magnetic base is arranged on the base; 2, V-shaped magnetism isolating plates; 3. sizing; 4. moving the ruler; 5. a base ruler; 60. a measuring head mounting base; 61. a conical probe; 62. a groove probe; 7. pressing a plate; 8. a first part; 9. and (5) a second part.

Detailed Description

In order that the present invention may be more readily and clearly understood, a more particular description of the utility model briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.

As shown in fig. 1-3, in the first embodiment, a self-centering hole site and groove size measuring device is provided, which includes a V-shaped magnetic base 1, a V-shaped magnetic shield 2 and a measuring assembly, the V-shaped magnetic base 1 can be adsorbed on the outer diameter surface of a part to be measured to realize self-centering measurement, certainly, the contact surface of the V-shaped magnetic base 1 should meet a certain roughness requirement, the V-shaped magnetic shield 2 is disposed on the top of the V-shaped magnetic base 1, the V-shaped magnetic shield 2 can isolate the magnetism of the V-shaped magnetic base 1 to enable the measuring assembly thereon to be normally used, and the measuring assembly is disposed on the V-shaped magnetic shield 2. The measuring component specifically contains scale 3, movable scale 4, basic ruler 5, interchangeable gauge head and digital display mechanism, wherein scale 3 installs at 2 top central authorities of V-arrangement magnetic shield, 4 sliding connection in 3 inside positions of leaning on of scale of movable scale, the breach is seted up to 3 front end bottoms of scale, in order to make things convenient for basic ruler 5's installation, basic ruler 5 slides and cup joints in 3 front ends of scale and is mutually perpendicular with movable scale 4, interchangeable gauge head demountable installation is in 4 front ends of movable scale, digital display mechanism can show and measure numerical value, in order to improve measurement sensitivity, the direct observation reading of measuring personnel of being convenient for, digital display mechanism specifically has contained the linearity appearance bars sensor that sets up on movable scale 4 and has set up in the electronic display screen on 3 surfaces of scale, refer to the design of appearance bars formula digital display caliper, the appearance bars sensor can respond to the displacement well and through digital display. The specific measurement principle of this embodiment is that the base ruler 5 that utilizes slidable regulation is as the zero-position reference surface of measurement, make the part hug closely and be tangent in the base ruler 5 face, the removal of deuterogamy movable ruler 4 and interchangeable gauge head is fixed a position the point location of awaiting measuring, and show the measurement value through digital display mechanism, calculate again at last and obtain the demand data, whole measurement process combines together through relative measurement and absolute measurement, in order to realize the purpose of convenient measurement part special construction slot, pitch-row size, the efficiency of measurement is higher, survey and draw has the positive effect to on-the-spot maintenance part.

Referring to fig. 1-3, the replaceable measuring head in the first embodiment is a hole site measuring head, and is suitable for hole parts with high measurement accuracy requirements, more hole sites and special structures, such as unequal-diameter hole center distances, deep hole site depth center distances, and the like. The first part 8 is a flange plate with multiple holes and step holes, and in the first embodiment, before measurement is carried out or after a hole site measuring head is replaced, calibration needs to be carried out firstly, and the relative distance between the end surface of the base ruler 5 and the hole site measuring head is specifically calibrated and determined so as to ensure the accuracy of subsequent measurement; when the hole position measuring device is used for measurement, the V-shaped magnetic base 1 is held by hand firstly to be close to the first part 8 and to be adsorbed on the outer diameter surface of the first part 8, the movable ruler 4 and the hole position measuring head can be automatically aligned to the circle center of the first part 8 through the symmetrical V-shaped notch design of the V-shaped magnetic base 1 to complete self-centering, then the base ruler 5 is moved to enable the reference end face of the base ruler 5 to be tightly attached to the outer diameter of the first part 8, the end face of the base ruler 5 is used as a zero position through zero resetting, then the movable ruler 4 is pushed to move the hole position measuring head to be measured to be positioned, after the positioning is completed, a measured value can be directly read through the digital display mechanism, and then the hole center distance is calculated according to requirements. When odd holes are measured, only the difference of subtracting two times from the outer diameter is calculated to obtain the hole center distance, when even holes are measured, the hole site measuring head can be directly moved to the opposite side holes to measure after the hole site on one side is measured, the difference of the two readings is the hole center distance, and whether the centers of all uniformly distributed holes are eccentric, the deviation value and the like can be detected according to the method, and whether the hole sites of local holes are out of tolerance can also be directly reflected through measurement. In addition, the measurement of the unequal-diameter hole center distance is convenient to measure and calculate through the method, the universal measuring tool cannot measure the multi-hole center distance of the deep hole due to the limitation of a clamping angle, the hole site measuring head in the embodiment can be lengthened, the hole center distance can be measured through one measuring head by a relative measuring method, the limitation of a double-measuring-head space structure is avoided, the measuring range is wider, the cost is saved, the requirement of batch production can be met, and the part detection qualified rate is improved.

Specifically, for the convenience of locating hole class centre of a circle, improve measurement accuracy, the hole site gauge head in the embodiment one specifically comprises demountable installation at the gauge head mount pad 60 and the toper gauge head 61 of threaded connection on gauge head mount pad 60 of 4 front ends of movable ruler, adjust toper gauge head 61 connecting rod and can realize that the gauge head lifts up and descends, the circular cone of toper gauge head 61 bottom can be convenient for locating hole class centre of a circle, and can be applicable to the hole of equidimension not, the hole site that the toper gauge head 61 of different length of simultaneous design can easily deal with various depths is measured, make deep hole position centre-to-centre spacing measure can not interfere, the convenience of measurement has been increased.

Referring to fig. 4 and 5, in the second embodiment, a self-centering hole position and groove size measuring device is also provided, which has a structure and a using method substantially identical to those of the first embodiment, except that the hole position measuring head in the first embodiment is replaced by a groove measuring head 62, so as to be suitable for groove type parts with higher measuring accuracy requirements and special structures. The second part 9 is an inner groove disc, and in the second embodiment, before measurement and use or after the groove measuring head 62 is replaced, calibration work is also required to be performed first, the relative distance between the end face of the base 5 and the end of the groove measuring head 62 is specifically determined through calibration, and then the deep groove aperture can be obtained easily by measuring and calculating the groove measuring head 62 according to the steps in the first embodiment.

As shown in fig. 1 to 5, in the first and second embodiments, in order to improve the stability during measurement, a pressing plate 7 for fixing the fixed length 3 is further added to the V-shaped magnetism isolating plate 2, and the moving length 4 and the base length 5 are not easily shaken during movement while the pressing plate 7 fixes the fixed length 3, thereby further improving the measurement stability.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above embodiments are described in further detail to solve the technical problems, technical solutions and advantages of the present invention, and it should be understood that the above embodiments are only examples of the present invention and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a from centering hole site, slot size measuring device which characterized in that: the device comprises a V-shaped magnetic base (1), a V-shaped magnetic isolation plate (2) arranged at the top of the V-shaped magnetic base (1) and a measuring assembly arranged on the V-shaped magnetic isolation plate (2);

the measuring assembly comprises a fixed ruler (3), a movable ruler (4), a base ruler (5), a replaceable measuring head and a digital display mechanism, wherein the fixed ruler (3) is installed at the center of the top of the V-shaped magnetism isolating plate (2), the movable ruler (4) is connected inside the fixed ruler (3) in a sliding mode, the base ruler (5) is connected to the front end of the fixed ruler (3) in a sliding mode and perpendicular to the movable ruler (4), the replaceable measuring head is detachably installed at the front end of the movable ruler (4), and the digital display mechanism is used for displaying measured values.

2. The self-centering hole site, trench size measuring device of claim 1, wherein: the replaceable measuring head is a hole site measuring head.

3. The self-centering hole site, trench size measuring device of claim 2, wherein: the hole site measuring head comprises a measuring head mounting seat (60) which is detachably mounted at the front end of the movable ruler (4) and a conical measuring head (61) which is in threaded connection with the measuring head mounting seat (60).

4. The self-centering hole site, trench size measuring device of claim 1, wherein: the replaceable probe is a channel probe (62).

5. The self-centering hole site, trench size measuring device of any of claims 1-4, wherein: the digital display mechanism comprises a capacitive grating sensor arranged on the movable scale (4) and an electronic display screen arranged on the surface of the fixed scale (3).

6. The self-centering hole site, trench size measuring device of claim 1, wherein: and a pressing plate (7) used for stabilizing the fixed length (3) is further arranged on the V-shaped magnetism isolating plate (2).