CN107514958B - A multifunctional measuring instrument and measuring method for shape and position tolerance of shaft assembly - Google Patents

Abstract

The invention belongs to the technical field related to form and position tolerance measuring equipment and discloses a multifunctional shaft assembly form and position tolerance measuring instrument which comprises a magnetic base station, a first cross shaft group, a second cross shaft group, a rotating body, a measuring ruler, a first platform, a second platform, a first measuring meter group and a second measuring meter group, wherein the magnetic base station is used for being adsorbed on a reference platform, the first cross shaft group is installed on the magnetic base station and can realize X-axis direction adjustment, the second cross shaft group is installed on the first cross shaft group and can realize Y-axis direction adjustment, the rotating body is installed on the second cross shaft group and can realize Z-axis direction adjustment, the measuring ruler is installed on the rotating body, and the first platform and the second platform are respectively installed on the measuring ruler. The invention also discloses a corresponding multifunctional measuring method. The invention can not only execute the form and position tolerance measurement between the part to be measured and the platform or between the parts with high precision, but also has the characteristics of compact structure, convenient operation, low cost, wide applicability and the like.

Description

A multifunctional measuring instrument and measuring method for shape and position tolerance of shaft assembly

technical field

The invention belongs to the related technical field of shape and position tolerance measuring equipment, and more specifically relates to a multifunctional shaft assembly shape and position tolerance measuring instrument and a measuring method, which are not only suitable for measuring the shape and position of a single part in a compact and easy-to-manipulate manner. Position tolerance, and can perform various form and position tolerance measurement processes between parts and platforms, or between parts and parts with high precision when assembling equipment.

Background technique

With the continuous advancement of industry, society needs more and more new equipment. These equipment, especially for special equipment, need to be processed to form the actual shape or mutual position of the points, lines, and surfaces that constitute the geometric characteristics of the parts. The measurement of the difference between the specified shape and the mutual position of the geometry, that is, the geometric tolerance measurement. Since the shape and position tolerance directly affects the performance requirements, matching properties, interchangeability and service life of equipment workpieces, the accuracy of its measurement results is a key indicator in the field of industrial manufacturing.

Some geometric tolerance measurement schemes have been proposed in the prior art. For example, CN201410631036.X proposes a comprehensive measurement device for shape and position tolerances, which can be suitable for the detection of shape and position tolerances of most small and medium-sized mechanical parts through the integration of flat plates, table frames, guide rails and rotary tables; Disclosed in CN202770349U is a kind of form and position tolerance measuring device, this device is based on the datum axis provided by itself, on the datum shaft is provided with a V-shaped block with an opening downward, at the upper end of the V-shaped block is provided with a The measuring arm stretches and contracts along the direction of the reference axis and the measuring arm that can rotate around the end of the V-shaped block. There is a measuring table on the measuring arm. The measuring table is used to measure the shape and position tolerance of shafts or straight rods parallel to the reference axis. , straightness and/or circular runout.

However, further studies have shown that the above-mentioned existing equipment is usually only suitable for measuring the size and tolerance of the part itself, and cannot precisely measure the shape and position tolerance between the part and the platform, or between the part and the part. At the same time, there are complex structures, Problems such as inconvenient operation or high cost. Correspondingly, further improvements are urgently needed in this field in order to better meet various demands in actual production and manufacturing.

Contents of the invention

Aiming at the above defects or improvement needs of the prior art, the present invention provides a multi-functional shaft assembly shape and position tolerance measuring instrument and a measuring method, in which the targeted design is carried out in combination with the actual needs in industrial applications, and the entire measuring instrument The structural layout and the specific structure and setting methods of key components such as the cross axis group, rotating body and working platform have been studied and improved, so that not only can the shape and position tolerance between the part to be measured and the platform, or between parts and parts be executed with high precision It also has the characteristics of compact structure, easy operation, low cost and wide applicability.

In order to achieve the above object, according to one aspect of the present invention, a multifunctional shaft assembly shape and position tolerance measuring instrument is provided, the measuring instrument includes a magnetic base, a first cross shaft group, a second cross shaft group, a rotating body, The measuring ruler, the first platform, the second platform, the first measuring table group and the second measuring table group are characterized in that:

The magnetic base includes a first base, a magnetic seat installed inside the first base, and a support fixed on the upper surface of the first base, which serves as the installation and support base for other components of the entire measuring instrument, And it is magnetically adsorbed on the reference platform where the parts to be tested are placed;

The first cross shaft group is directly installed on the magnetic base, and includes a first cross shaft, a first push rod, a first compression spring and a first washer, wherein the first cross shaft is connected to the first cross shaft through one end thereof. The support is horizontally hinged; the first push rod vertically passes through the first cross shaft, and then screwed into the threaded hole installed on the first base; the first compression spring and the first gasket are both sleeved and the two ends of the first compression spring respectively press against the lower surface of the first cross shaft and the upper surface of the first base, and the first pad The piece is set between the upper surface of the first cross shaft and the first push rod; in this way, by rotating the knob on the upper end of the first push rod, the first cross shaft and the setting Other components on it are kept parallel in the X-axis direction relative to the reference plane;

The second cross shaft group is installed on the first cross shaft group, and includes a second base, a second cross shaft, a second push rod, a second compression spring and a second washer, wherein the second base The seat is fixed on the upper surface of the first cross shaft, and is used as the installation basis for other components of the second cross shaft group; the second cross shaft is horizontally hinged with the second base through one end; the second cross shaft The push rod is vertically screwed into the threaded hole of the second cross shaft, and the second compression spring and the second gasket are fitted on the second push rod; in addition, the second The first and last ends of the compression spring respectively press against the lower surface of the second cross shaft and the upper surface of the second base, and the second washer is arranged on the upper surface of the second push rod and the upper surface of the second base. Between the lower surfaces of the two bases; in this way, by rotating the knob on the upper end of the second push rod, the second cross axis and other components arranged on it are adjusted in the Y-axis direction relative to the reference plane keep parallel;

The rotating body is installed on the second cross shaft group, and is used to drive other components arranged on it to rotate in the Z-axis direction while performing its own rotation in the Z-axis direction relative to the reference plane;

The measuring ruler is installed on the rotating body and includes a support rod, a guide rail and a scale, wherein the guide rail is vertically arranged on one side of the support rod, and the scale is vertically arranged on the other side of the support rod side;

The first platform and the second platform are respectively installed on the lower part and the upper part of the measuring ruler, wherein for the first platform, it includes a first slide plate, a first base plate, a first pointer, a first extension screw, a push Pull rod, fork support plate, wherein the first slide plate is vertically fitted with the guide rail to realize sliding up and down on the guide rail, and can be locked via the first locking screw at the same time; the first base plate and the first The pointers are all installed on the first slide plate, so as to slide together with it; the first elongated screw rod passes through the first stop nut horizontally, and is matched with the pin shaft on the first base plate; the One end of the push-pull rod passes through the pin shaft, and its other end can move along the slideway on the first base plate; the fork support plate is composed of two arc-shaped elements in the middle of each other through the fork pin. Hinged, and one end of the fork support plate is hinged with one end of the push-pull rod; in this way, by rotating the first elongated screw, the pin shaft and the push-pull rod are driven to move, Then drive the fork support plate to perform the opening and closing operation; for the second platform, it includes a second slide plate, a second base plate, and a second pointer, wherein the second slide plate is vertically mated with the guide rail to realize Sliding up and down on this guide rail can be locked through the second locking screw at the same time; the second base plate and the second pointer are both installed on the second slide plate, thereby sliding together with it;

Both the first measuring meter group and the second measuring meter group are installed on the second platform, wherein the first measuring meter group includes a first dial indicator installed on the multi-link module through a first watch clip, And continue to be installed to the lower part of the second platform through the multi-link module, so that the position and posture of the first dial gauge can be freely adjusted; The second dial indicator on the upper part of the second platform, and the second watch clip is hinged with the slider through the third locking screw, and the slider is connected with the third extension screw, thus by rotating the first The three lengthened screws can make the slider perform forward and backward movement, and then drive the second dial indicator to perform forward and backward movement.

As a further preference, the mid-axis planes of the first cross shaft group and the second cross shaft group are preferably set to be perpendicular to each other, and the axis of the rotating body is parallel to the first and second cross shaft groups. The plane on which it is located remains vertical.

As a further preference, the first base plate preferably has an arc-shaped slot and a straight sliding slot, wherein the arc-shaped slot matches the pin at one end of the push-pull rod, and the straight sliding slot matches the pin at one end of the pin shaft. match the bottom.

As a further preference, for the rotating body, it preferably includes a swivel, a gland, a rotating body pressing slider, a rotating body lengthening screw, and an inner hexagonal bolt, wherein the inner hexagonal bolt passes through the gland, The round holes in the respective centers of the swivel rings are installed on the second cross shaft. The inner wall of the rotating body presses the slider and the outer wall of the gland is connected together, and the extended screw of the rotating body is installed on the rotating body. The side of the ring and press the rotating body to compress the slider; sequentially, when in use, the rotating body can be rotated first to lengthen the screw, so that the rotating body can loosen between the pressing slider and the gland, The swivel is then turned so that all other components carried on top of this swivel rotate with it.

As a further preference, for the first measuring meter group, its multi-link module preferably includes a first rod, a second rod, a first rod clamp, a second rod clamp and a fourth locking screw, wherein the The first watch clamp is hinged with the head end of the first rod, and the tail end of the first rod continues to be hinged with the head end of the second rod; the middle part of the second rod is fitted and installed on the first rod On the first rod clamp, the first rod clamp continues to be hinged with the second rod clamp; the second rod clamp is hinged with the second slide plate through the fourth locking screw; in this way, by rotating The second rod clamp can make the entire first measuring gauge group rotate relative to the central axis of the fourth locking screw.

According to another aspect of the present invention, a corresponding measuring method is also provided, characterized in that the method includes performing the function of measuring and adjusting the verticality between the surveying instrument itself and the reference platform, and includes the following steps:

When in use, firstly, the magnetic base allows the entire measuring instrument to be adsorbed on the reference platform, and by adjusting the second platform and the first measuring gauge group, the measuring head of the first dial indicator is aligned with the reference platform. contact with the platform;

Then rotate the rotating body and drive the first measuring gauge group to rotate together, thereby making the first dial indicator perform a circular motion on the reference platform with the central axis of the magnetic base, and observe the The reading of the first dial indicator changes, and it is judged whether to tighten or unscrew the first push rod or the second push rod according to the change trend of the reading;

After continuously rotating the rotating body and adjusting the first push rod and/or the second pushing rod for many times, until the indication of the first dial indicator does not change during the rotation of the rotating body or or Until the variation range satisfies the preset requirements, the measuring ruler is kept perpendicular to the reference platform at this time, that is, the entire measuring instrument has realized the verticality requirement between itself and the reference platform.

As a further preference, after completing the process of measuring and adjusting the verticality between the surveying instrument itself and the reference platform, it preferably also includes the process of performing the verticality measurement and adjustment of the axis to be measured, and includes the following steps:

Move the measuring instrument to the side of the shaft to be measured, and adjust the relative position between the measuring instrument and the shaft to be measured and adjust the opening and closing of the fork support plate of the first platform, so that the fork support plate and the fork support plate The shaft to be measured remains in full contact;

Then adjust the second platform and the second measuring gauge group, so that the second dial indicator keeps in contact with the shaft to be measured, at this time lock each movable joint, and then open the locking of the second platform, through the up and down By moving the second platform, the vertical relationship between the axis to be measured and the reference platform can be measured, and the relative position of the axis to be measured and the reference platform can be adjusted according to the data;

When a measured line meets the verticality requirements, move the entire measuring instrument clockwise or counterclockwise 90 degrees around the axis to be measured, and then perform the next test, and return to the first one after the measurement is completed. Check the vicinity of the measurement position until the verticality of the axis to be measured meets the requirements.

As a further preference, after completing the process of measuring and adjusting the verticality of the axes to be measured, it preferably also includes a process of measuring the parallelism between the two axes to be measured, and includes the following steps:

Adjust the first measurement group so that the first dial gauge is in contact with another shaft to be measured, then move the second platform up and down, and adjust the other shaft to be measured according to the value change of the first dial gauge. The relative position between measuring axis and datum;

When a measured line meets the verticality requirements, the other line is detected and adjusted by adjusting the relative position between the first measurement group and the other axis to be measured. After the detection is completed, the first thousandth The meter returns to the vicinity of the first test line for inspection until the parallelism between the two axes to be measured meets the requirements.

According to yet another aspect of the present invention, a corresponding measurement method is also provided, characterized in that the method includes a process of measuring the parallelism between the reference axis and the axis to be measured, and includes the following steps:

Move the measuring instrument to the side of the reference axis, and adjust the relative position between the measuring instrument and the reference axis and adjust the opening and closing of the fork support plate of the first platform, so that the fork support plate is aligned with the reference axis maintain full contact;

Then slide the first platform up and down, and continuously adjust the first cross shaft group and the second cross shaft group, so that the fork support plate is always in line with the reference axis during the process of sliding the first platform up and down. maintain sufficient contact until the first spider set and the second spider set are fixed;

Then adjust the second platform and the second measuring gauge group so that the second dial gauge remains in contact with the reference shaft, and at this time, unlock the second platform under the condition of locking the movable joints, and then By moving the second platform up and down, the parallelism relationship between the measuring instrument and the reference axis can be measured; at the same time, in the process of moving the second platform up and down, according to the second measuring table set The data of the second dial gauge in the center continuously adjusts the first cross axis group and the second cross axis group, that is, adjusts the relative position between the entire measuring instrument and the reference axis, and makes the first cross axis When the shaft group and the second cross shaft group are finally fixed, the value change range of the second dial gauge during the entire up and down movement of the second platform meets the preset requirements, and at this time it is determined that the measured The parallelism requirements are met between the first line between the instrument and the reference axis;

Then turn the rotating body to rotate at a certain angle, and at the same time adjust the second platform and the second measuring gauge group, so that the contact between the second dial indicator and the reference shaft is maintained, and at this time, each activity is locked. In the case of joints, open the lock of the second platform, and then move the second platform up and down to measure the parallelism relationship between the measuring instrument and the reference axis; at the same time, move the second platform up and down During the process of the second platform, the first cross axis group and the second cross axis group are constantly adjusted according to the data of the second dial indicator in the second measuring table group, that is, the distance between the entire measuring instrument and the reference axis is adjusted. The relative position between them, and when the first cross-axis group and the second cross-axis group are finally fixed, the value change range of the second dial indicator during the whole up-and-down movement of the second platform meets the preset At this time, it is determined that the measured parallelism requirement is met between the second line between the measuring instrument and the reference axis;

Next, continue to rotate the rotating body to reach the vicinity of the first line of the reference axis, and repeat so that the first line meets the parallelism requirements; then turn the rotating body again to reach the second line of the reference axis Nearby, and repeat so that the second line meets the parallelism requirements, thereby confirming that the parallelism requirements are met between the measuring instrument and the reference axis;

Next, adjust the first measurement group so that the first dial indicator is in contact with the shaft to be measured. At this time, the locking of the second platform is unlocked under the condition of locking each movable joint, and then the second platform is moved up and down by moving the first The second platform adjusts the relative position between the axis to be measured and the reference platform according to the numerical change of the first dial indicator, so that when the relative position between the axis to be measured and the reference platform is fixed, the During the entire up and down movement of the second platform, the numerical variation range of the first dial indicator meets the preset requirements, and at this time, it is determined that the measured first line between the measuring instrument and the axis to be measured meets the parallelism Require;

Then turn the rotating body to rotate at a certain angle, and at the same time adjust the first measurement group so that the first dial indicator is in contact with the shaft to be measured, and at this time, open the second platform under the condition of locking the movable joints lock, and then adjust the relative position between the axis to be measured and the reference platform by moving the second platform up and down and according to the numerical change of the first dial indicator, so that it finally reaches the position between the axis to be measured and the reference platform. When the relative position of the second platform is fixed, the numerical variation range of the first dial indicator meets the preset requirements during the entire up and down movement of the second platform, and at this time, the distance between the measuring instrument and the axis to be measured is measured. The second line of meets the parallelism requirement;

Finally, continue to rotate the rotating body to reach the vicinity of the first line of the shaft to be measured, and repeat so that the first line meets the parallelism requirements; then turn the rotating body again to reach the second line of the shaft to be measured. Near the first line, and repeat so that the second line meets the parallelism requirements, thus confirming that the parallelism requirements are met between the measuring instrument and the axis to be measured;

Through the above-mentioned whole process, the parallelism requirement between the reference axis and the axis to be measured can be adjusted.

Generally speaking, compared with the prior art, according to the above technical solution of the present invention, through the research and improvement of the entire structural layout of the measuring instrument and the specific structure and arrangement of key components such as the cross axis group, rotating body and working platform, etc. Correspondingly, it can not only realize the function of shape and position tolerance between parts and platforms or between parts and parts when assembling equipment, but also can measure the perpendicularity and parallelism between parts and platforms, and can also measure the distance between two rotation axes Parallelism and other functions; according to the measuring instrument of the present invention, it has the characteristics of high precision, compact structure, easy operation, low cost and wide applicability, so it is especially suitable for multifunctional measurement applications of various industrial equipment, especially special equipment.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of a shaft assembly form and position tolerance measuring instrument constructed according to a preferred embodiment of the present invention;

Fig. 2 is a schematic diagram showing the structure of the magnetic abutment and two cross shaft groups shown in Fig. 1 more specifically;

Fig. 3 is a schematic view showing the structure of the rotating body and measuring ruler shown in Fig. 1 more specifically;

Fig. 4 is a schematic structural diagram of a first platform according to a preferred embodiment of the present invention;

Fig. 5 is a schematic view showing the layout of the first platform shown in Fig. 4 in more detail;

Fig. 6 is a schematic diagram showing the structure of the second platform and the first measurement meter group shown in Fig. 1 more specifically;

Fig. 7 is a schematic structural diagram of a second measuring meter group according to another preferred embodiment of the present invention;

Figure 8 is a schematic diagram for exemplary explanation of the measurement and adjustment process for keeping the measuring ruler perpendicular to the reference platform according to the present invention;

FIG. 9 is a schematic diagram for exemplary explanation of the initial state of the process of performing "contour measurement" according to the present invention;

FIG. 10 is a schematic diagram for exemplary explanation of another state for performing the "contour measurement" process according to the present invention.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Fig. 1 is a schematic diagram of the overall structure of a shaft assembly form and position tolerance measuring instrument constructed according to a preferred embodiment of the present invention. As shown in Figure 1, the measuring instrument mainly includes a magnetic base 1, a first cross shaft group 2, a second cross shaft group 3, a rotating body 4, a measuring ruler 5, a first platform 6, a second platform 7, a first Measuring meter group 8 and second measuring meter group 9 and other components, wherein the magnetic base 1 is used as the installation basis for all other components above, the first cross axis group 2 is directly installed on the magnetic base 1, and the second cross axis group 3 is installed On the first cross shaft group 2, the rotating body 4 is installed on the second cross shaft group 3, the measuring ruler 5 is fixed on the rotating body 4, the first platform 6 and the second platform 7 are installed on the measuring ruler, the first Both the measuring meter group 8 and the second measuring meter group 9 are installed on the second platform, and the specific structural composition and setting methods of these key components will be described one by one below.

The magnetic base 1 includes a first base 1-1, a magnetic seat 1-2 installed inside the first base, and a support 1-3 fixed on the upper surface of the first base 1-1, etc. , which serves as the installation and support base for other components of the entire measuring instrument, and is magnetically adsorbed on the reference platform 10 on which the parts to be measured are placed. In use, for example, by rotating the knob on the magnetic base 1-2, the first base 1-1 can be adsorbed on the reference platform 10 of the part to be tested by the magnetic force of the magnetic base 1-2.

For the first cross shaft group 2, it is directly installed on the magnetic base 1, and mainly includes the first cross shaft 2-1, the first push rod 2-2, the first compression spring 2-3 and the first pad Sheets 2-6 and other components. Wherein the first cross shaft 2-1 is horizontally hinged with the support 1-3 through one end; the first push rod 2-2 vertically penetrates the first cross shaft 2-1, and then is screwed into and installed on the first base 1-1 threaded hole; the first compression spring 2-3 and the first washer 2-6 are fit and installed on the first push rod, and the first compression spring 2-3 The ends press against the lower surface of the first cross shaft 2-1 and the upper surface of the first base 1-1 respectively, and the first gasket 2-6 is arranged on the upper surface of the first cross shaft and the first base 1-1. Between the push rods 2-2; in this way, by rotating the knob on the upper end of the first push rod, the first cross shaft 2-1 and other components arranged on it are adjusted in the X-axis direction relative to the reference plane keep parallel.

More specifically, one end of the first cross shaft 2-1, for example, can be hinged to the support 1-3 through cylindrical sections on both sides, and the first compression spring 2-3 and the first washer 2-6 are worn on the second side. on a push rod 2-2, and the upper surface of the first gasket 2-6 is in contact with the first push rod 2-2, and the lower surface of the first gasket 2-6 is in contact with the upper surface of the first cross shaft 2-1 contact, the top end of the first compression spring 2-3 is in contact with the lower surface of the first cross shaft 2-1, the bottom end of the first compression spring 2-3 is in contact with the upper surface of the first base 1-1, and the first The push rod 2-2 is screwed into the threaded hole of the first base 1-1. In addition, both the first pressing slider 2-4 and the first pressing cover 2-5 are installed together with the support 1-3. When in use, by turning the knob on the upper end of the first push rod 2-2, the X direction between the first cross axis 2-1 and the reference plane can be adjusted to keep parallel.

As for the second cross shaft group 3, it is installed on the first cross shaft group 2, preferably wherein the axial plane is perpendicular to the central axis plane of the first cross shaft group, and includes the second base 3-1, the second Elements such as the cross shaft 3-2, the second push rod 3-3, the second compression spring 3-4 and the second gasket 3-7. Wherein the second base 3-1 is fixed on the upper surface of the first cross shaft 2-1, and is used as the installation basis for other components of the second cross shaft group; the second cross shaft 3-2 connects with the first cross shaft through one end thereof The two bases 3-1 are horizontally hinged; the second push rod 3-3 is vertically screwed into the threaded hole installed on the second cross shaft 3-2, and the second compression spring 3-4 and the second gasket 3 -7 are fit and installed on the second push rod; in addition, the first and last ends of the second compression spring 3-4 are respectively pressed against the lower surface of the second cross shaft 3-2 and the bottom surface of the second base 3-1. upper surface, the second gasket 3-7 is arranged between the upper surface of the second push rod 3-3 and the lower surface of the second base 3-1; in this way, by rotating the second push rod The knob at the upper end is used to adjust the second cross axis and other components arranged on it to keep parallel to the reference plane in the direction of the Y axis.

More specifically, the second base 3-1 is fixed on the upper surface of the first cross shaft 2-1, and one end of the second cross shaft 3-2, for example, can pass through the cylindrical segments on both sides and the semicircle on the base 3-1. The grooves are hinged together, the second compression spring 3-4 and the second pad 3-7 are all worn on the second push rod 3-3, and the lower surface of the second pad 3-7 is connected to the second push rod 3-7. 3, the upper surface of the second gasket 3-7 contacts the lower surface of the base 3-1, the top of the second compression spring 3-4 contacts the lower surface of the second cross shaft 3-2, and the second The bottom ends of the two compression springs 3-4 are in contact with the upper surface of the second base 3-1, and the second push rod 3-3 is screwed into the threaded hole of the second cross shaft 3-2. In addition, both the second pressing slider 3-5 and the second pressing cover 3-6 are installed together with the second base 3-1. When in use, through the knob on the upper end of the second rotating push rod 3-3, you can adjust the Y direction between the second cross axis 3-2 and the reference plane to keep parallel, that is, you can pass the first cross axis group 2 and the second cross axis The common adjustment of the shaft group 3 can make the shaft assembly form and position tolerance measuring instrument of the present invention perpendicular to the reference plane.

The rotating body 4 is installed on the second cross shaft group 3, and is used to drive other components arranged on it to rotate in the Z-axis direction while performing its own rotation in the Z-axis direction relative to the reference plane . According to a preferred embodiment of the present invention, the axis of the rotating body is kept perpendicular to the plane where the second cross shaft in the second cross shaft group is located.

As specifically shown in the figure, it can include components such as a swivel 4-1, a gland 4-2, a rotating body pressing slide block 4-3, a rotating body lengthening screw rod 4-4, and a hexagon socket head bolt 4-5. Wherein, the inner hexagonal bolt 4-5 is installed on the second cross shaft 3-2 through the round holes in the respective centers of the gland 4-2 and the swivel ring 4-1, and the rotating body presses the inner wall of the slider 4-3 to the pressure The outer walls of the cover 4-2 are matched and connected together, and the rotating body extension bolt 4-4 is installed on the side of the swivel 4-1, and the top tightly compresses the slide block 4-3. When in use, the rotating body lengthening screw rod 4-4 can be rotated at first, so that the rotating body can loosen between the pressing slider 4-3 and the gland. All components rotate accordingly.

The measuring ruler 5 is installed on the rotating body 4, and includes a support rod 5-1, a guide rail 5-2 and a scale 5-3, etc., wherein the guide rail 5-2 is vertically arranged on one side of the support rod 5-1, The scale 5-3 is vertically arranged on the other side of the support rod 5-1; more specifically, as shown in the figure, the bottom end of the support rod 5-1 can be installed on the upper surface of the swivel 4-1 , the guide rail 5-2 can be installed on the front surface of the support bar 5-1, and the scale 5-3 can be installed on the right side of the support bar 5-1.

The first platform 6 and the second platform 7 are installed on the lower part and the upper part of the measuring ruler 5 respectively, and will be described in more detail below in conjunction with Fig. 4 and Fig. 5 .

For the first platform, it includes a first slide plate 6-1, a first base plate 6-2, a first pointer 6-4, a first lengthening screw 6-5, a push-pull rod 6-6, and a fork support plate. 6-7 and other components. Wherein, the first sliding plate 6-1 is vertically matched with the guide rail 5-2 to realize sliding up and down on the guide rail, and can be locked via the first locking screw 6-3 at the same time; the first base plate 6-2 and the first pointer 6-4 are installed on the first slide plate 6-1, thereby sliding together with it; the first elongated screw rod 6-5 passes through the first stop nut 6-9 horizontally, and is located at The pin shaft 6-8 on the first base plate 6-2 is matched and connected; one end of the push-pull rod 6-6 passes through the pin shaft 6-8, and its other end can be along the pin shaft on the first base plate 6-2. The slideway moves; the fork support plate 6-7 is formed by two arc-shaped elements hinged mutually by the fork pin 6-11 in the middle part respectively, and one end of the fork support plate and the push-pull rod 6-6 One end is hinged together; in this way, by rotating the first lengthened screw rod 6-5, the pin shaft 6-8 and the push-pull rod 6-6 are driven to move, and then the fork support plate 6-7 is driven to perform the opening and closing operation. More specifically, the first slide plate 6-1 is mated with the guide rail 5-2, that is, the first slide plate 6-1 can slide on the guide rail 5-2, the first base plate 6-2, the first locking screw 6-3 and The first pointer 6-4 is installed on the first slide plate 6-1, and the top of the first locking screw 6-3 can be in contact with the side of the guide rail 5-2, that is, the first locking screw 6-3 can be locked First skateboard 6-1. In addition, for example, the limit nut bracket 6-10 can be used to install on the first base plate 6-2, and the first limit nut 6-9 can be used to be installed in the limit nut bracket 6-10, and the first extended screw rod 6-10 can be installed on the first base plate 6-2. 5 passes through the first limit nut 6-9 and cooperates with the pin shaft 6-8, one end of the push-pull rod 6-6 is passed through the pin shaft 6-8 to make it hinged together, the fork support plate 6-7 One end is hinged with one end of the push-pull rod 6-6, the middle parts of the two fork support plates 6-7 are hinged together by the fork pin 6-11, and the pin at one end of the push-pull rod 6-6 is connected with the first base plate 6-11. The slideway on the 2 is matched together, and the slideway on the bearing pin 6-8 and the first base plate 6-2 is matched together, and the lower end of fork pin 6-11 is then fixed on the base plate one 6-2.

As for the second platform, it mainly includes components such as a second slide plate 7-1, a second base plate 7-2, and a second pointer 7-4. Wherein, the second slide plate 7-1 is vertically matched with the guide rail 5-2 to realize sliding up and down on the guide rail, and can be locked via the second locking screw 7-3 at the same time; the second base plate 7 -2 and the second pointer 7-4 are both mounted on the second slide plate 7-1 so as to slide along with it.

The first measurement table group 8 and the second measurement table group 9 will be explained in more detail below in conjunction with FIG. 6 and FIG. 7 . As shown in the figure, these two measuring table sets are all installed on the second platform 7, wherein the first measuring table set mainly includes the first dial indicator installed on the multi-link module through the first table clamp 8-2 8-1, and continue to be installed to the lower part of the second platform through the multi-link module, so that the position and posture of the first dial gauge can be freely adjusted. More specifically, the first measuring table set may include, for example, a first dial indicator 8-1, a first watch clamp 8-2, a first rod 8-3, a second rod 8-4, and a first rod clamp 8-5. , the second rod clip 8-6, the fourth locking screw rod 8-7. Wherein, the first dial indicator 8-1 is installed on the first table clip 8-2, the first table clip 8-2 and the first rod 8-3 are hinged, the first rod 8-3 and the second rod 8-4 Hinged, the second rod 8-4 is installed on the first rod clamp 8-5, the first rod clamp 8-5 and the second rod clamp 8-6 are hinged, and the second rod clamp 8-6 passes through the fourth locking screw 8 -7 is hinged with the second slide plate 7-1. When in use, the whole first measuring table group 8 can be rotated by rotating the second rod clamp 8-6, or by making the first table clamp 8-2, the first rod 8-3, the second rod 8-4, The first rod clamp 8-5 and the second rod clamp 8-6 perform relative movement, thereby adjusting the relative position of the first dial gauge 8-1.

For the second measuring table group 9, it includes the second dial indicator 9-1 installed on the top of the second platform through the second table clip 9-2, and the second table clip 9-2 is connected by the third lock The tight screw 9-7 is hinged with the slide block 9-6, and the slide block 9-6 is connected with the third lengthening screw 9-4, so that the fourth lengthening screw 9-4 can be rotated so that the The slider 9-6 performs a forward and backward movement, thereby driving the second dial gauge 9-1 to perform a forward and backward movement. More specifically, as shown in the figure, the second dial gauge 9-1 is installed on the second watch clamp 9-2, and the second watch clamp 9-2 and the slider 9-6 are, for example, passed through the third locking screw 9-2. 7 are hinged together, the table base 9-3 is fixed on the second base plate 7-2, the second limit nut 9-5 is installed in the table base 9-3, and the third extended screw rod 9-4 passes through the second limit Nut 9-5 cooperates with slide block 9-6 and is connected together, and slide block 9-6 cooperates with the chute on the table seat 9-3.

The specific implementation process of the measuring instrument according to the present invention under various typical applications will be explained in detail below with reference to FIG. 1 and FIG. 8 .

First, as shown in Figure 8, the implementation process of making itself perpendicular to the reference platform 10 is as follows: firstly, the magnetic base 1 is adsorbed on the reference plane, and the axis of the rotating body 4 is aligned with the second cross shaft in the second cross shaft group 3 The plane where 3-2 is located is vertical. By adjusting the first push rod 2-2, all parts above the first cross shaft group 2 of the measuring instrument can be adjusted to rotate around the Y axis, and by adjusting the second push rod 3-3, the rotation of the second cross shaft group 3 can be adjusted. All parts on the rotating body 4 rotate around the X axis, and all parts above the rotating body 4 can be rotated around the Z axis by rotating the swivel 4-1 in the rotating body 4 .

In specific use, the entire measuring instrument is adsorbed on the reference platform 10 through the magnetic base 1, and the measuring head of the first dial indicator 8-1 is aligned with the reference platform 10 by adjusting the second platform 7 and the first measurement meter group 8. Contact; then rotate the rotating body 4 to drive the first measuring table group 8 to rotate, and then make the first dial gauge 8-1 perform a circular motion on the reference platform 10 with the central axis of the magnetic base 1, and at the same time rotate the rotating body 4 Observe the change of the reading of the first dial indicator 8-1 during the process, and judge whether to tighten or loosen the first ejector rod 2-2 or the second Push rod 3-3; after continuously rotating the rotating body 4 and adjusting the first pushing rod 2-2 and/or the second pushing rod 3-3 for many times, until the first dial indicator 8- in the process of rotating the rotating body 4 1 until the indication of 1 no longer changes (or the range of change meets the requirements), at this time, the part above the rotating body 4, that is, the measuring ruler 5, is perpendicular to the reference platform 10 (or meets the verticality requirements), that is, the shape and position tolerance of the shaft assembly The measuring instrument can realize the function of being perpendicular to the reference platform 10 (or meeting the verticality requirement).

As shown in Figures 9 and 10, the implementation process of "contour measurement" according to the present invention will be explained in detail below in conjunction with the accompanying drawings. At this moment, the distance of the measuring head of the first dial indicator 8-1 relative to the reference platform 10 can remain unchanged, that is, "contour measurement" can be carried out, and the specific implementation process is as follows:

First, by adjusting the first push rod 2-2 and the second push rod 3-3, the measuring ruler 5 has been perpendicular to the reference platform (or meets the verticality requirements); then, by adjusting the position of the second platform 7 and the first measurement The first rod 8-3 and the second rod 8-4 in the meter group 8 make the measuring head of the first dial gauge 8-1 contact the upper end surface of the first part 11 to be measured, and adjust the first dial gauge to zero 8-1, then fix the second platform 7, the first rod 8-3 and the second rod 8-4; then, the rotating body 4 drives the first measuring table group 8 to rotate together, thus making the first dial indicator 8 -1 Make a circular motion on the central axis of the magnetic base 1 on the reference platform 10 until the measuring head of the first dial indicator 8-1 is turned to the upper end surface of the second part 12 to be measured. The indication of the subtable 8-1 just can judge whether the upper end surface of the first part to be tested 11 and the upper end surface of the second part to be tested 12 are of the same height.

The implementation process of making the axis to be measured perpendicular to the reference according to the present invention will be explained in detail below.

After completing the process that the above-mentioned measuring ruler 5 has been perpendicular to the reference platform 10 (or meets the verticality requirements), the adjusted measuring instrument is moved to the side of the axis to be measured, by adjusting the relative position of the measuring instrument and the axis to be measured, and By adjusting the opening and closing of the fork support plate 6-7 on the first platform 6, the fork support plate 6-7 is kept in full contact with the shaft to be measured; then by adjusting the second platform 7 and the second measuring table group 9, Make the second dial indicator 9-1 contact with the shaft to be measured, lock each movable joint at this time, and then unlock the second platform 7, and move the second platform 7 up and down to measure the distance between the shaft to be measured and the reference platform vertical relationship, while adjusting the relative position of the axis to be measured and the reference platform according to the data. When a measured line meets the verticality requirements, assemble the shape and position tolerance tester around the axis to be measured and move about 90 degrees clockwise or counterclockwise, and then perform another test. After the measurement is completed Then go back to the vicinity of the first measurement position for detection, and then adjust according to the above sequence if it is not satisfied. After multiple adjustments, the verticality of the axis to be measured can meet the requirements.

Finally, it is the implementation process of measuring the parallelism between the reference axis and the axis to be measured.

First, move the measuring instrument to the side of the reference axis, and adjust the relative position between the measuring instrument and the reference axis and adjust the opening and closing of the fork support plate 6-7 of the first platform 6, so that the fork The mouth support plate 6-7 is in full contact with the reference axis;

Then slide the first platform 6 up and down, while continuously adjusting the first cross shaft group 2 and the second cross shaft group 3, so that the fork support plate in the process of sliding the first platform 6 up and down 6-7 maintain full contact with the reference shaft until the first cross shaft group 2 and the second cross shaft group 3 are fixed;

Then adjust the second platform 7 and the second measuring gauge group 9 so that the second dial indicator 9-1 remains in contact with the reference shaft, and at this time, the second dial gauge 9-1 is opened under the condition of locking each movable joint. The locking of the platform 7, and then by moving the second platform 7 up and down, the parallelism relationship between the measuring instrument and the reference axis can be measured; at the same time, in the process of moving the second platform 7 up and down, Constantly adjust the first cross axis group 2 and the second cross axis group 3 according to the data of the second dial indicator 9-1 in the second measurement table group 9, that is, adjust the entire measuring instrument and the reference The relative position between the shafts, and when the first cross shaft group 2 and the second cross shaft group 3 are finally fixed, the second dial indicator 9- The numerical range of 1 all meets the preset requirements, and at this time, it is determined that the first line between the measured measuring instrument and the reference axis meets the parallelism requirements;

Then rotate the rotating body 4 to rotate at a certain angle, and at the same time adjust the second platform 7 and the second measuring gauge group 9, so that the second dial indicator 9-1 maintains contact with the reference axis, At this time, under the condition of locking each movable joint, the lock of the second platform 7 is opened, and then by moving the second platform 7 up and down, the parallelism relationship between the measuring instrument and the reference axis can be measured; At the same time, in the process of moving the second platform 7 up and down, according to the data of the second dial indicator 9-1 in the second measuring table group 9, the first cross shaft group 2 and the second cross shaft group 2 are constantly adjusted. The cross axis group 3, that is, to adjust the relative position between the entire measuring instrument and the reference axis, and make the first cross axis group 2 and the second cross axis group 3 finally complete the fixation, the entire second platform 7 In the process of moving up and down, the numerical variation range of the second dial indicator 9-1 all meets the preset requirements, and at this time, it is determined that the measured parallelism requirement is met between the measuring instrument and the second line between the reference axis ;

Next, continue to rotate the rotating body 4 to reach near the first line of the reference axis, and repeat so that the first line meets the requirements of parallelism; then turn the rotating body 4 again to reach the second line of the reference axis. Near the first line, and repeat so that the second line meets the parallelism requirements, thus confirming that the parallelism requirements are met between the measuring instrument and the reference axis;

Next, adjust the first measuring group 8 so that the first dial gauge 8-1 is in contact with the shaft to be measured, at this time, unlock the second platform 7 under the condition of locking each movable joint, and then pass Move the second platform 7 up and down and adjust the relative position between the axis to be measured and the reference platform 10 according to the numerical change of the first dial indicator 8-1, so that it finally reaches the position when the axis to be measured and the reference platform 10 When the relative position between them is fixed, the numerical variation range of the first dial indicator 8-1 all meets the preset requirements during the whole up-and-down movement process of the second platform 7, and at this time, it is determined that the measured The first line between the instrument and the axis to be measured meets the parallelism requirements;

Then rotate the rotating body 4 to rotate at a certain angle, and at the same time adjust the first measuring group 8 so that the first dial gauge 8-1 is in contact with the shaft to be measured. the locking of the second platform 7, and then adjust the relative position between the axis to be measured and the reference platform 10 by moving the second platform 7 up and down and according to the numerical change of the first dial gauge 8-1, so that Finally, when the relative position between the axis to be measured and the reference platform 10 is fixed, the numerical variation range of the first dial gauge 8-1 meets the preset requirements during the entire up-and-down movement process of the second platform 7 , it is measured that the second line between the measuring instrument and the axis to be measured meets the parallelism requirement;

Finally, continue to rotate the rotating body 4 to reach near the first line of the shaft to be measured, and repeat so that the first line meets the requirements of parallelism; then turn the rotating body 4 again to reach the line of the shaft to be measured. Near the second line, and repeating so that the second line meets the parallelism requirements, thus confirming that the parallelism requirements are met between the measuring instrument and the axis to be measured;

Through the above-mentioned whole process, the parallelism requirement between the reference axis and the axis to be measured can be adjusted.

In summary, the shaft assembly geometric tolerance measuring instrument according to the present invention can solve the specific needs of various application scenarios. It can not only realize the function of geometric tolerance between parts and platforms or parts and parts when assembling equipment, but also can Measure the perpendicularity and parallelism between the part and the platform, and can also measure the parallelism between two rotating shafts and other functions; the measuring instrument according to the present invention has high precision, compact structure, easy operation, low cost and wide applicability And other characteristics, so it is especially suitable for multi-functional measurement applications of various industrial equipment, especially special equipment.

It is easy for those skilled in the art to understand that the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention, All should be included within the protection scope of the present invention.

Claims (7)

1. The utility model provides a multi-functional axle equipment form and position tolerance measuring apparatu, this measuring apparatu includes magnetism base station (1), first cross axle group (2), second cross axle group (3), rotator (4), dipperstick (5), first platform (6), second platform (7), first meter group (8) and second meter group (9), its characterized in that:

the magnetic base station (1) comprises a first base (1-1), a magnetic seat (1-2) arranged in the first base, and a support (1-3) fixed on the upper surface of the first base (1-1), wherein the support is used as a mounting and supporting foundation of other components of the whole measuring instrument and is adsorbed on a reference platform (10) on which a part to be measured is placed through magnetic force;

the first cross shaft group (2) is directly arranged on the magnetic base (1) and comprises a first cross shaft (2-1), a first ejector rod (2-2), a first compression spring (2-3) and a first gasket (2-6), wherein the first cross shaft (2-1) is horizontally hinged with the support (1-3) through one end of the first cross shaft; the first ejector rod (2-2) vertically penetrates through the first cross shaft (2-1) and is then screwed into a threaded hole of the first base (1-1); the first compression spring (2-3) and the first gasket (2-6) are respectively sleeved on the first ejector rod (2-2), the head end and the tail end of the first compression spring (2-3) respectively press the lower surface of the first cross shaft (2-1) and the upper surface of the first base (1-1), and the first gasket (2-6) is arranged between the upper surface of the first cross shaft (2-1) and the first ejector rod (2-2); in this way, by rotating the knob at the upper end of the first jack (2-2), the first cross (2-1) is adjusted so as to remain parallel in the X-axis direction with respect to the reference plane;

The second cross shaft group (3) is mounted on the first cross shaft group (2) and comprises a second base (3-1), a second cross shaft (3-2), a second ejector rod (3-3), a second compression spring (3-4) and a second gasket (3-7), wherein the second base (3-1) is fixed on the upper surface of the first cross shaft (2-1) and is used as a mounting foundation of other elements of the second cross shaft group (3); the second cross shaft (3-2) is horizontally hinged with the second base (3-1) through one end of the second cross shaft; the second ejector rod (3-3) is vertically screwed into a threaded hole of the second cross shaft (3-2), and the second compression spring (3-4) and the second gasket (3-7) are both sleeved on the second ejector rod (3-3); in addition, the head end and the tail end of the second compression spring (3-4) respectively press against the lower surface of the second cross shaft (3-2) and the upper surface of the second base (3-1), and the second gasket (3-7) is arranged between the upper surface of the second ejector rod (3-3) and the lower surface of the second base (3-1); in this way, by rotating the knob at the upper end of the second jack (3-3), the second cross (3-2) is adjusted so as to remain parallel in the Y-axis direction with respect to the reference plane;

the rotating body (4) is arranged on the second cross shaft group (3) and is used for driving other components of the measuring instrument arranged on the rotating body to rotate in the Z-axis direction together while executing the rotation of the rotating body in the Z-axis direction relative to the reference plane;

The measuring ruler (5) is arranged on the rotating body (4) and comprises a supporting rod (5-1), a guide rail (5-2) and a scale (5-3), wherein the guide rail (5-2) is vertically arranged on one side of the supporting rod (5-1), and the scale (5-3) is vertically arranged on the other side of the supporting rod (5-1);

the first platform (6) and the second platform (7) are respectively arranged at the lower part and the upper part of the measuring ruler (5), wherein the first platform (6) comprises a first sliding plate (6-1), a first base plate (6-2), a first pointer (6-4), a first lengthening screw rod (6-5), a push-pull rod (6-6) and a fork supporting plate (6-7), and the first sliding plate (6-1) is vertically matched and connected with the guide rail (5-2) to realize up-and-down sliding on the guide rail and can be locked through a first locking screw rod (6-3); the first base plate (6-2) and the first pointer (6-4) are both mounted on the first slide plate (6-1) so as to slide together therewith; the first lengthening screw (6-5) horizontally penetrates through the first limit nut (6-9) and is matched and connected with a pin shaft (6-8) positioned on the first base plate (6-2); one end of the push-pull rod (6-6) passes through the pin shaft (6-8), and the other end of the push-pull rod can move along a slideway on the first base plate (6-2); the fork opening support plate (6-7) is formed by hinging two arc-shaped elements with each other at the middle part of each arc-shaped element through a fork opening pin (6-11), and one end of the fork opening support plate (6-7) is hinged with one end of the push-pull rod (6-6); in this way, the pin shaft (6-8) and the push-pull rod (6-6) are driven to move by rotating the first lengthened screw rod (6-5), so that the fork opening support plate (6-7) is driven to perform opening and closing operations; for the second platform (7), the second platform comprises a second sliding plate (7-1), a second base plate (7-2) and a second pointer (7-4), wherein the second sliding plate (7-1) is vertically matched and connected with the guide rail (5-2) to realize up-and-down sliding on the guide rail, and can be locked through a second locking screw (7-3); the second base plate (7-2) and the second pointer (7-4) are both mounted on the second slide plate (7-1) so as to slide together therewith;

The first measuring meter group (8) and the second measuring meter group (9) are arranged on the second platform (7), wherein the first measuring meter group (8) comprises a first dial indicator (8-1) arranged on the multi-link module through a first meter clamp (8-2), and the first dial indicator is continuously arranged on the lower part of the second platform (7) through the multi-link module, so that the position and the gesture of the first dial indicator (8-1) can be freely adjusted; the second meter group (9) comprises a second dial indicator (9-1) which is arranged at the upper part of the second platform (7) through a second meter clamp (9-2), the second meter clamp (9-2) is hinged with a sliding block (9-6) through a third locking screw (9-7), the sliding block (9-6) is in matched connection with a third lengthening screw (9-4), and therefore the sliding block (9-6) can execute front-back movement through rotating the third lengthening screw (9-4) so as to drive the second dial indicator (9-1) to execute front-back movement;

for the first meter group, the multi-link module comprises a first rod (8-3), a second rod (8-4), a first rod clamp (8-5), a second rod clamp (8-6) and a fourth locking screw (8-7), wherein the first meter clamp (8-2) is hinged with the head end of the first rod (8-3), and the tail end of the first rod (8-3) is continuously hinged with the head end of the second rod (8-4); the middle part of the second rod (8-4) is sleeved on the first rod clamp (8-5), and the first rod clamp is continuously hinged with the second rod clamp (8-6); the second rod clamp (8-6) is hinged with the second sliding plate (7-1) through the fourth locking screw rod (8-7).

2. Axle assembly form and position tolerance measuring instrument according to claim 1, characterized in that the central axes of the first and second sets of cross axles (2, 3) are set to be perpendicular to each other and the axis of the rotating body (4) is kept perpendicular to the plane of the second cross axle (3-2).

3. The axle assembly form and position tolerance measuring instrument according to claim 1, characterized in that the first base plate (6-2) has an arc-shaped groove and a straight slide groove, wherein the arc-shaped groove cooperates with a pin at one end of the push-pull rod (6-6), and the straight slide groove cooperates with a lower end of the pin axle (6-8).

4. The shaft assembly form and position tolerance measuring instrument according to claim 1, characterized in that for the rotating body (4), the rotating body comprises a rotating ring (4-1), a gland (4-2), a rotating body compressing sliding block (4-3), a rotating body lengthening screw (4-4) and an inner hexagon bolt (4-5), wherein the inner hexagon bolt (4-5) is installed on the second cross shaft (3-2) through a round hole at the center of each of the gland and the rotating ring, the inner wall of the rotating body compressing sliding block (4-3) is connected with the outer wall of the gland (4-2) in a matching way, and the rotating body lengthening screw (4-4) is installed on the side face of the rotating ring (4-1) and abuts against the rotating body compressing sliding block (4-3); in a sequential manner, when in use, the rotator lengthening screw (4-4) can be rotated firstly, so that looseness occurs between the rotator pressing sliding block (4-3) and the pressing cover (4-2), and then the swivel (4-1) is rotated, so that all other components borne on the upper part of the rotator rotate along with the rotator.

5. A method of measuring with a shaft assembly form and position tolerance gauge according to any one of claims 1-4, characterized in that it comprises the steps of performing the function of measuring and adjusting the perpendicularity between the gauge itself and the reference platform (10), and comprising the following steps:

when the measuring instrument is used, firstly, the magnetic base station (1) enables the whole measuring instrument to be adsorbed on the reference platform (10), and the measuring head of the first dial indicator (8-1) is contacted with the reference platform (10) by adjusting the second platform (7) and the first dial indicator group (8);

then the rotating body (4) is rotated and drives the first measuring meter group (8) to rotate together, so that the first measuring meter (8-1) moves circumferentially on the reference platform (10) by the central axis of the magnetic base table (1), meanwhile, the indication change of the first measuring meter (8-1) is observed in the rotating process, and the first ejector rod (2-2) or the second ejector rod (3-3) is judged to be screwed or unscrewed according to the indication change trend;

the rotating body (4) is continuously rotated, and the first ejector rod (2-2) and/or the second ejector rod (3-3) are/is adjusted for a plurality of times until the indication number of the first dial indicator (8-1) is not changed or the change range meets the preset requirement in the rotating process of the rotating body (4), and at the moment, the measuring ruler (5) is kept vertical to the reference platform (10), namely the whole measuring instrument meets the requirement of the perpendicularity between the measuring ruler and the reference platform (10).

6. Method according to claim 5, characterized in that it comprises, after the completion of the process of measuring and adjusting the perpendicularity between the measuring instrument itself and the reference platform (10), a process of measuring and adjusting the perpendicularity of the shaft to be measured, and comprises the following steps:

moving the measuring instrument to the side of the shaft to be measured, and enabling the fork opening support plate (6-7) to be in full contact with the shaft to be measured by adjusting the relative position between the measuring instrument and the shaft to be measured and adjusting the opening and closing of the fork opening support plate (6-7) of the first platform (6);

then, the second platform (7) and the second measuring table group (9) are regulated, so that the second dial indicator (9-1) is kept in contact with the shaft to be measured, at the moment, all movable joints are locked, then the second platform (7) is opened for locking, the vertical relation between the shaft to be measured and the reference platform can be measured by moving the second platform (7) up and down, and meanwhile, the relative position of the shaft to be measured and the reference platform can be regulated according to data;

when one measured line meets the perpendicularity requirement, the whole measuring instrument moves clockwise or anticlockwise by ninety degrees around the axis to be measured, then the next test is carried out, and the measuring instrument returns to the vicinity of the first measuring position for testing until the perpendicularity of the axis to be measured meets the requirement.

7. A method of measuring using a shaft assembly form and position tolerance gauge according to any one of claims 1-4, characterized in that the method comprises the steps of performing a measurement of the parallelism between a reference shaft and a shaft to be measured, and comprising the steps of:

moving the measuring instrument beside the reference shaft, and enabling the fork support plate (6-7) to be in full contact with the reference shaft by adjusting the relative position between the measuring instrument and the reference shaft and adjusting the opening and closing of the fork support plate (6-7) of the first platform (6);

then sliding the first platform (6) up and down, and simultaneously continuously adjusting the first cross shaft group (2) and the second cross shaft group (3) to ensure that the fork opening support plates (6-7) are always in full contact with the reference shaft in the process of sliding the first platform (6) up and down until the first cross shaft group (2) and the second cross shaft group (3) are fixed;

then, the second platform (7) and the second measuring table group (9) are adjusted, so that the second dial indicator (9-1) is kept in contact with the reference shaft, at the moment, the locking of the second platform (7) is opened under the condition of locking each movable joint, and then the parallelism relationship between the measuring instrument and the reference shaft can be measured by moving the second platform (7) up and down; meanwhile, in the process of moving the second platform (7) up and down, continuously adjusting the relative positions of the first cross shaft group (2) and the second cross shaft group (3) according to the data of a second dial gauge (9-1) in the second dial gauge group (9), namely adjusting the relative positions of the whole measuring instrument and a reference shaft, and enabling the first cross shaft group (2) and the second cross shaft group (3) to finally finish fixing, wherein the numerical value change range of the second dial gauge (9-1) in the whole up and down movement process of the second platform (7) meets preset requirements, and at the moment, the measured first line between the measuring instrument and the reference shaft meets the parallelism requirement;

Then the rotating body (4) rotates for a certain angle, and the second platform (7) and the second measuring meter group (9) are adjusted at the same time, so that the second dial indicator (9-1) keeps contact with the reference shaft, at the moment, the locking of the second platform (7) is opened under the condition of locking each movable joint, and then the parallelism relationship between the measuring meter and the reference shaft can be measured by moving the second platform (7) up and down; meanwhile, in the process of moving the second platform (7) up and down, continuously adjusting the relative positions of the first cross-shaft group (2) and the second cross-shaft group (3) according to the data of a second dial indicator (9-1) in a second measuring table group (9), namely adjusting the relative positions of the whole measuring instrument and a reference shaft, and enabling the first cross-shaft group (2) and the second cross-shaft group (3) to finally finish fixing, wherein the numerical variation range of the second dial indicator (9-1) in the whole up and down moving process of the second platform (7) meets preset requirements, and at the moment, the measured second line between the measuring instrument and the reference shaft meets the parallelism requirement;

continuing to rotate the rotating body (4) to the vicinity of the first line of the reference axis, and repeating such that the first line satisfies the parallelism requirement; then rotating the rotating body (4) again to the vicinity of a second line of the reference axis and repeating such that the second line satisfies the parallelism requirement, thereby determining that the parallelism requirement is satisfied between the measuring instrument and the reference axis;

Then, the first dial indicator group (8) is adjusted to enable the first dial indicator (8-1) to be in contact with the shaft to be measured, at the moment, the second platform (7) is opened under the condition of locking each movable joint, then the relative position between the shaft to be measured and the reference platform (10) is adjusted through moving the second platform (7) up and down and according to the numerical value change of the first dial indicator (8-1), so that the first line between the measuring instrument and the shaft to be measured is determined to meet the parallelism requirement in the moment when the relative position between the shaft to be measured and the reference platform (10) is fixed finally, and the numerical value change range of the first dial indicator (8-1) meets the preset requirement in the whole up and down movement process of the second platform (7);

then rotating the rotating body (4) to rotate by a certain angle, adjusting the first dial indicator group (8) to enable the first dial indicator (8-1) to be in contact with the shaft to be measured, opening the locking of the second platform (7) under the condition of locking each movable joint, and then adjusting the relative position between the shaft to be measured and the reference platform (10) by moving the second platform (7) up and down and according to the numerical value change of the first dial indicator (8-1), so that the numerical value change range of the first dial indicator (8-1) meets the preset requirement in the whole up and down moving process of the second platform (7) when the relative position between the shaft to be measured and the reference platform (10) is fixed, and measuring the second line between the measuring instrument and the shaft to be measured meets the parallelism requirement;

Finally, continuing to rotate the rotating body (4) to the vicinity of a first line of the shaft to be tested, and repeating the process to enable the first line to meet the requirement of parallelism; then, the rotating body (4) is rotated again to reach the vicinity of a second line of the shaft to be measured, and the second line is repeated to meet the parallelism requirement, so that the parallelism requirement between the measuring instrument and the shaft to be measured is determined;

through the whole process, the parallelism requirement between the reference shaft and the shaft to be measured can be met.

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