CN107121111A - Bearing projection measuring devices and bearing protrusion measuring equipment - Google Patents

Abstract

The present invention relates to bearing measuring technical field, more particularly to bearing projection measuring devices and bearing protrusion measuring equipment, wherein, bearing projection measuring devices, including displacement transducer, positioning tool, measuring table and the pneumatic lifting unit set gradually from top to bottom；Measuring table is used to place bearing to be measured, and one end of Pneumatic elevation unit can be through measuring table and by bearing jack-up to be measured；Positioning tool includes measurement auxiliary member and locating core, and locating core is used to position bearing to be measured；The inner ring or the upper surface of outer ring for measuring auxiliary member and the coaxial bearing heart to be measured and can be with bearing to be measured；The measuring probe of displacement transducer is acted on measurement auxiliary member.The bearing protrusion measuring equipment that the bearing projection measuring devices provided by two kinds of present invention are constituted can realize the positive and negative planar survey of angular contact bearings automatically, save manual labor, also, the process of automation can save time of measuring.

Description

Bearing protrusion measurement device and bearing protrusion measurement equipment

technical field

The invention relates to the technical field of bearing measurement, in particular to a bearing protrusion measurement device and bearing protrusion measurement equipment.

Background technique

Most of the high-precision bearings used in modern precision instruments and equipment use paired angular contact bearings. Angular contact bearings can bear radial load and axial load at the same time. Can work at higher speeds. The larger the contact angle, the higher the axial load carrying capacity. However, this type of bearing not only requires high speed and high precision, but also requires the shaft system to have strong rigidity and be able to meet the operation under heavy load. In order to meet these requirements, it is necessary to accurately measure the bearing protrusion of a single angular contact bearing under a certain preload. The amount of protrusion of the bearing is the height difference between the end face of the outer ring and the end face of the inner ring of the bearing.

At present, the measurement of bearing protrusion is basically completed by manpower, which is time-consuming and labor-intensive, and the measurement accuracy is low.

Contents of the invention

The purpose of the present invention is to provide a bearing protrusion measurement device and bearing protrusion measurement equipment, which solves the technical problems of low efficiency, high cost and low precision in the prior art that the bearing protrusion measurement work is completed by people. .

On the one hand, the present invention provides a bearing protrusion measuring device, comprising: a displacement sensor, a positioning tool, a measuring platform and a pneumatic lifting unit arranged sequentially from top to bottom;

The measuring platform is used to place the bearing to be tested, and one end of the pneumatic lifting unit can pass through the measuring platform and jack up the bearing to be tested;

The positioning tool includes a measuring auxiliary part and a positioning core, and the positioning core is used for positioning the bearing to be tested; the measuring auxiliary part is concentric with the bearing to be tested and can be connected to the inner ring or outer contact with the upper surface of the ring;

The measuring probe of the displacement sensor acts on the measuring aid.

Further, it also includes a rotation adjustment mechanism, the rotation adjustment mechanism is fixedly connected to the pneumatic lifting unit and can move up and down with the pneumatic lifting unit;

The upper surface of the rotation adjustment mechanism can be in contact with the bottom surface of the bearing to be tested placed on the measurement platform, and is used to rotate the inner ring or outer ring of the bearing to be tested.

Further, the rotation adjustment mechanism includes a bracket and a geared motor connected in sequence, a coupling, a screw support assembly, a rotating shaft and an ejector, and the ejector acts on the bottom surface of the bearing to be tested;

The bracket is fixedly connected to the pneumatic lifting unit, and the reduction motor is fixed on the bracket.

Further, a spring for fine adjustment is provided between the ejector and the rotating shaft.

Further, the pneumatic lifting unit includes an air cylinder; the piston main shaft of the air cylinder is fixedly connected to the rotation adjustment mechanism, and a floating joint is arranged between the two.

Further, the measurement platform includes a measurement base plate and a measurement backing plate, the measurement backing plate is embedded in the measurement base plate, and the middle part of the measurement backing plate is provided with a working hole for the pneumatic lifting unit to pass through. The diameter of the working hole is smaller than the diameter of the bearing to be tested.

On the other hand, the present invention also provides a bearing protrusion measurement device for angular contact bearings, including an overturn assembly and two bearing measurement devices provided in any one of the above technical solutions, the overturn assembly is set between two bearing measuring devices;

The two bearing measuring devices are respectively a first bearing measuring device for measuring the outer ring of the bearing to be tested and a second bearing measuring device for measuring the inner ring of the bearing to be tested;

The overturning mechanism is used for overturning the bearing to be measured after being measured by the first bearing measuring device, and then transporting it to the second bearing measuring device for measurement.

Further, in the first bearing measuring device, the measuring platform is further provided with an air gripper for lifting the measuring auxiliary part from the upper surface of the bearing to be measured.

Further, in the second bearing measuring device, the positioning tool is also provided with a positioning assembly for fixing the axial movement of the measurement auxiliary part, the positioning assembly is sleeved on the measurement auxiliary part and the measurement The auxiliary member can rotate relative to the positioning assembly.

Further, a control system is also included, and the control system includes a monitoring device and a main controller, and the displacement sensor and the pneumatic lifting unit are respectively electrically connected to the main controller.

The bearing protrusion measurement device and the bearing protrusion measurement equipment provided by the present invention can achieve the following beneficial effects:

A bearing protrusion measurement device provided by the present invention includes: a displacement sensor, a positioning tool, a measuring platform and a pneumatic lifting unit arranged sequentially from top to bottom; the measuring platform is used to place the bearing to be tested, and one end of the pneumatic lifting unit can Go through the measuring platform and jack up the bearing to be tested; the positioning tool includes a measuring auxiliary part and a positioning core, which is used for positioning the bearing to be tested; the measuring auxiliary part is concentric with the bearing to be tested and can be aligned with the inner The upper surface of the ring or outer ring is in contact; the measuring probe of the displacement sensor acts on the measuring aid. When working, first use the bearing protrusion measurement device provided by the invention to measure the standard bearing, place the standard bearing on the working hole of the measurement platform, start the pneumatic lifting mechanism, and the pneumatic lifting mechanism pushes up to make the standard bearing and the positioning core Contact for centering and positioning, start the displacement sensor, the displacement sensor acts on the measurement auxiliary parts and obtain test data, and zero the displacement sensor according to the standard parameters of the standard bearing. Then remove the standard bearing, place the bearing to be tested on the working hole on the measurement platform, start the pneumatic lifting mechanism, and the pneumatic lifting mechanism pushes the bearing to be tested upwards to make it contact with the positioning core for centering positioning, start the displacement sensor, and the displacement The sensor is applied to the measurement auxiliary part, and the displacement change of the bearing surface is obtained by measuring the displacement change of the auxiliary part, and compared with the standard bearing measurement parameters, the protrusion of the bearing to be tested is obtained. It can be seen that the bearing protrusion measurement mechanism provided by the present invention can automatically and accurately measure the bearing protrusion, which reduces the labor intensity of workers and saves measurement time.

The present invention also provides a bearing protrusion measuring device, which is used for angular contact bearings, and includes an overturning assembly and two bearing measuring devices provided in the above technical solutions, and the overturning assembly is arranged between the two bearing measuring devices; The two bearing measuring devices are the first bearing measuring device for measuring the inner ring of the bearing to be tested and the second bearing measuring device for measuring the outer ring of the bearing to be tested; After the bearing to be tested is overturned, it is sent to the second bearing measuring device for measurement. In the production test, the angular contact bearing to be tested is placed on the first bearing test device, and the protrusion of the first surface of the bearing is measured. After the test is completed, the turning assembly turns the bearing to be tested and placed on the On the second bearing measuring device, the bearing protrusion is measured on the other side, and the bearing protrusion measurement of the front and back sides of the diagonal contact bearing is realized. It can be seen that during the whole measurement process, the measurement of the front and back of the diagonal contact bearing can be automatically realized, which saves manpower, and the automation process can save measurement time on the basis of improving measurement accuracy.

Description of drawings

In order to more clearly illustrate the specific implementation of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the specific implementation or description of the prior art. Obviously, the accompanying drawings in the following description The drawings show some implementations of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative work.

Fig. 1 is a bearing protrusion measurement device provided by Embodiment 1 of the present invention;

Fig. 2 is a bearing protrusion measuring device provided by Embodiment 2 of the present invention;

Fig. 3 is a first bearing protrusion measuring device in a bearing protrusion measuring device provided in Embodiment 2 of the present invention;

Fig. 4 is an internal structure diagram of the positioning tool of the first bearing protrusion measuring device of a bearing protrusion measuring device provided in Embodiment 2 of the present invention;

Fig. 5 is an internal structure diagram of a positioning tool of a second bearing protrusion measuring device of a bearing protrusion measuring device provided in Embodiment 2 of the present invention.

Icons: 100-displacement sensor; 201-measuring auxiliary parts; 202-positioning core; 301-reduced motor; 302-coupling; 303-screw support assembly; 304-ejector; 305-spring; Shaft; 401-air cylinder; 402-floating joint; 501-measuring bottom plate; 502-measuring backing plate;

detailed description

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

Embodiment one

Referring to Fig. 1 , a bearing protrusion measuring device provided by an embodiment of the present invention includes: a displacement sensor 100, a positioning tool, a measuring platform and a pneumatic lifting unit arranged sequentially from top to bottom;

The measurement platform is used to place the bearing 800 to be tested, and one end of the pneumatic lifting unit can pass through the measurement platform and lift the bearing 800 to be tested; the positioning tool includes a measurement auxiliary part 201 and a positioning core 202, and the positioning core 202 is used for the bearing 800 to be tested Positioning; the measuring aid 201 is coaxial with the bearing 800 to be tested and can be in contact with the upper surface of the inner ring or outer ring of the bearing 800 to be tested; the measuring probe of the displacement sensor 100 acts on the measuring aid 201 .

When working, first use the bearing protrusion measurement device provided by the embodiment of the present invention to measure the standard bearing, place the standard bearing on the working hole of the measurement platform, start the pneumatic lifting mechanism, and the pneumatic lifting mechanism pushes up to make the standard bearing and The positioning core 202 is contacted for centering and positioning, and the displacement sensor 100 is activated. The displacement sensor 100 acts on the measurement auxiliary part 201 to obtain test data. The displacement sensor 100 is zeroed according to the standard parameters of the standard bearing. Then take off the standard bearing, place the bearing 800 to be tested on the working hole on the measurement platform, start the pneumatic lifting mechanism, and the pneumatic lifting mechanism pushes the bearing 800 to be tested upwards to make it contact with the positioning core 202 for centering and positioning, and start the displacement The sensor 100, the displacement sensor 100 acts on the measuring auxiliary part 201, the displacement change of the bearing surface is obtained by measuring the displacement change of the auxiliary part 201, and the protrusion amount of the bearing 800 to be tested is obtained by comparing with the standard bearing measurement parameters.

It can be seen that the bearing protrusion measurement mechanism provided by the present invention can automatically and accurately measure the bearing protrusion, which reduces the labor intensity of workers and saves measurement time.

Wherein, when the bearing protrusion measuring device provided in this embodiment measures the two end faces of the angular contact bearing, the structure of the positioning tool is different.

Specifically, the line connecting the contact point between the steel ball of the contact ball bearing and the inner and outer rings in the angular contact bearing forms an angle with the radial direction, and the opposite surface between the inner ring and the outer ring is an inclined plane. And the inner ring and the outer ring have a wide end face and a narrow end face respectively, the narrow end face of the inner ring and the wide end face of the outer ring are located on the same side, and the wide end face of the inner ring and the narrow end face of the outer ring are located on one side.

If the pneumatic lifting unit acts on the narrow end face of the inner ring of the bearing 800 to be tested when the bearing 800 to be tested is lifted, the inner ring may be pushed out. Therefore, when measuring the bearing protrusion of the bearing 800 to be tested, if The inner and outer rings are measured separately, and the pneumatic lifting unit acts on different end faces of the angular contact bearing.

When measuring the inner ring of the bearing, the measuring auxiliary part 201 acts on the narrow end face of the inner ring, the positioning core 202 is the outer positioning core 202 and acts on the outer surface of the bearing outer ring, and the pneumatic lifting unit acts on the wide end face of the inner ring of the bearing .

When measuring the outer ring of the bearing, the measuring auxiliary part 201 acts on the narrow end face of the outer ring, the positioning core 202 is the upper positioning core 202 and acts on the upper surface of the bearing inner ring, and the pneumatic lifting unit acts on the wide end face of the bearing outer ring .

The bearing protrusion measurement device provided in this embodiment also includes a rotation adjustment mechanism, which is fixedly connected to the pneumatic lifting unit and can move up and down with the pneumatic lifting unit;

The upper surface of the rotation adjustment mechanism can be in contact with the bottom surface of the bearing to be tested 800 placed on the measurement platform, and is used to rotate the inner ring or the outer ring of the bearing to be tested 800 .

Before using the displacement sensor 100 to test the bearing protrusion of the bearing 800 to be tested, the bearing 800 to be tested needs to be rotated so that the contact between the components inside the bearing 800 to be tested is more sufficient and the force is balanced.

Wherein, the rotation adjustment mechanism includes a bracket and a reduction motor 301, a coupling 302, a screw support assembly 303, a rotating shaft 306 and an ejector 304 that are sequentially connected by transmission, and the ejector 304 acts on the bottom surface of the bearing 800 to be tested;

The bracket is fixedly connected with the pneumatic lifting unit, and the reduction motor 301 is fixed on the bracket.

The bracket fixes the rotation adjustment mechanism on the pneumatic lifting unit, so that the rotation adjustment mechanism can rise and fall against the pneumatic lifting unit.

In the bearing protrusion measurement device provided in this embodiment, the pneumatic lifting unit includes a cylinder 401; the piston spindle of the cylinder 401 is fixedly connected to the rotation adjustment mechanism, and a floating joint 402 is arranged between them.

During the extension and retraction process of the piston main shaft of the cylinder 401, the lifting and lowering adjustment of the rotation adjustment mechanism is realized. The bearing 800 to be tested is pushed out to the positioning effect of the positioning tool.

In order to prevent the cylinder 401 from being bent due to eccentricity, poor balance accuracy, etc., the piston rod is bent and the rod seal is worn, the performance of the cylinder 401 is reduced, and the service life of the cylinder 401 is shortened. A floating joint 402 is arranged between the end and the support of the rotation adjustment mechanism to make the cylinder 401 move smoothly. The floating joint 402 absorbs the lack of eccentricity and parallel accuracy of the support and the cylinder 401, so that the cylinder 401 and the support can also work within the allowable eccentricity range.

Specifically, a spring 305 for fine adjustment is provided between the ejector 304 and the rotating shaft 306 .

The measurement platform includes a measurement base plate 501 and a measurement backing plate 502. The measurement backing plate 502 is embedded in the measurement base plate 501. The middle part of the measurement backing plate 502 is provided with a working hole for the pneumatic lifting unit to pass through. The diameter of the working hole is smaller than the bearing 800 to be tested. The diameter of the outer ring is greater than the diameter of the inner ring.

The diameter of the working hole is smaller than the diameter of the bearing 800 to be tested, so that the bearing 800 to be tested prevents it from falling on the working hole; When on the outer ring of the bearing 800 to be tested, the ejector 304 can pass through the working hole to jack up the bearing 800 to be tested.

It should be noted that the radial size of the ejector 304 in this embodiment matches the diameter of the working hole.

Embodiment two

Referring to Figures 2-5, the embodiment of the present invention provides a bearing protrusion measuring device for angular contact bearings, including an overturning assembly 600 and two bearing measuring devices provided in the first embodiment above, the overturning assembly 600 Set between two bearing measuring devices;

The two bearing measuring devices are respectively a first bearing measuring device for measuring the outer ring of the bearing to be tested 800 and a second bearing measuring device for measuring the inner ring of the bearing to be tested 800;

The overturning mechanism is used to overturn the bearing 800 to be tested after being measured by the first bearing measuring device, and then transport it to the second bearing measuring device for measurement.

In the production test, the angular contact bearing to be tested is placed on the first bearing testing device, and the protrusion of the first surface of the bearing is measured. After the test is completed, the turning assembly 600 turns over the bearing 800 to be tested and Put it on the second bearing measuring device, measure the bearing protrusion on the other side, and realize the bearing protrusion measurement on the front and back sides of the angular contact bearing. It can be seen that during the whole measurement process, the measurement of the front and back of the diagonal contact bearing can be automatically realized, which saves manpower, and the automation process can save measurement time on the basis of improving measurement accuracy.

Referring to FIG. 3 , in the first bearing measuring device, the measuring platform is further provided with an air gripper 701 for lifting the measuring auxiliary part 201 away from the upper surface of the bearing 800 to be tested.

Referring to Fig. 4, when measuring the outer ring of the bearing, the measuring auxiliary part 201 acts on the narrow end face outside the bearing, and the positioning core 202 acts on the wide end face of the inner ring and extends into the inner ring of the bearing, if The measurement auxiliary part 201 rotates with the rotation of the inner ring of the bearing, which will generate a relatively large frictional force and affect the adjustment of the bearing. Means the device on the upper surface of the inner ring), specifically the air gripper 701.

Specifically, the air gripper 701 surrounds the top of the measurement aid 201 , and its upper end surface has an inward slope, and correspondingly, a slope adapted to the slope of the air gripper 701 is provided on the circumference of the top of the measurement aid 201 . During operation, the air claw 701 is closed, the measuring auxiliary part 201 and the air claw 701 slide relative to the inclined plane, the measuring auxiliary part 201 moves upward in the vertical direction, and the bottom surface of the measuring auxiliary part 201 leaves the upper end surface of the inner ring of the bearing 800 to be tested.

In addition, referring to Fig. 5, in the second bearing measuring device, the positioning tool is also provided with a positioning assembly for fixing the axial movement of the measuring auxiliary part 201, the positioning assembly is sleeved on the measuring auxiliary part 201 and the measuring auxiliary part 201 can be positioned relative to the assembly turn.

When measuring the inner ring of the bearing, the rotation adjustment mechanism drives the inner ring of the bearing to be tested 800 in contact with it to rotate. At this time, the measurement auxiliary part 201 is in contact with the upper end surface of the inner ring of the bearing 800 to be tested, and it rotates together with the rotation of the inner ring of the bearing.

Moreover, the embodiment of the present invention also includes a control system, the control system includes a monitoring device and a main controller, and the displacement sensor 100 and the pneumatic lifting unit are respectively electrically connected to the main controller.

In operation, the main controller can realize the automatic control of the test of the front and back of the bearing 800 to be tested. Moreover, the displacement sensor 100 transmits the test data to the main controller in real time, and the main controller arranges and analyzes the measurement data and then monitors them with the monitoring equipment.

In the monitoring equipment, an alarm device can also be installed to realize the alarm function when there is an unqualified angular contact bearing.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (10)

1. a kind of bearing projection measuring devices, it is characterised in that including：The displacement transducer set gradually from top to bottom (100), positioning tool, measuring table and pneumatic lifting unit；

The measuring table is used to place bearing to be measured (800), and one end of the Pneumatic elevation unit can pass through the measurement Platform and by bearing (800) jack-up to be measured；

The positioning tool includes measurement auxiliary member (201) and locating core (202), and the locating core (202) is used to treat to described Bearing (800) is surveyed to be positioned；The measurement auxiliary member (201) and bearing to be measured (800) are concentric and can be with bearing to be measured (800) inner ring or the upper surface of outer ring；

The measuring probe of institute's displacement sensors (100) is acted on the measurement auxiliary member (201).

2. bearing projection measuring devices according to claim 1, it is characterised in that also including rotating and regulating mechanism, institute Rotating and regulating mechanism is stated to be fixedly connected on the Pneumatic elevation unit and can move up and down with Pneumatic elevation unit；

The upper surface of the rotating and regulating mechanism can connect with the bottom surface for the bearing to be measured (800) being placed on the measuring table Touch, inner ring or outer ring for rotating bearing to be measured (800).

3. bearing projection measuring devices according to claim 2, it is characterised in that the rotating and regulating mechanism includes branch Frame and the reducing motor (301) being connected successively, shaft coupling (302), leading screw bearing component (303), rotary shaft (306) and Ejection piece (304), the ejection piece (304) acts on bearing to be measured (800) bottom surface；

The support is fixedly connected with the Pneumatic elevation unit, and the reducing motor (301) is fixed on the support.

4. bearing projection measuring devices according to claim 3, it is characterised in that the ejection piece (304) with it is described The spring (305) for fine setting is provided between rotary shaft (306).

5. bearing projection measuring devices according to claim 2, it is characterised in that the Pneumatic elevation unit includes gas Cylinder (401)；The spindle piston of the cylinder (401) is fixedly connected with the rotating and regulating mechanism, and is provided between the two Floating junction (402).

6. bearing projection measuring devices according to claim 1, it is characterised in that the measuring table includes measurement bottom Plate (501) and measurement backing plate (502), the measurement backing plate (502) are embedded in the measurement bottom plate (501), the measurement backing plate (502) working hole passed through for the Pneumatic elevation unit is opened up in the middle part of, the diameter of the working hole is less than described to be measured The diameter of bearing (800).

7. a kind of bearing protrusion measuring equipment, for angular contact bearing, it is characterised in that including upset component (600) and two Bearing measuring device any one of platform the claims 1-6, the upset component (600) is arranged at described in two Between bearing measuring device；

Two bearing measuring devices be respectively the clutch shaft bearing measurement apparatus that is used to measuring bearing to be measured (800) outer ring and Second bearing measurement apparatus for measuring bearing to be measured (800) inner ring；

The switching mechanism is transported to institute after being overturn for the bearing to be measured (800) for having measured the clutch shaft bearing measurement apparatus Second bearing measurement apparatus is stated to measure.

8. bearing protrusion measuring equipment according to claim 7, it is characterised in that in the clutch shaft bearing measurement apparatus In, the measuring table is additionally provided with disengages it from bearing to be measured (800) upper table for the measurement auxiliary member (201) to be lifted The jaw (701) in face.

9. bearing protrusion measuring equipment according to claim 7, it is characterised in that in the second bearing measurement apparatus In, the positioning tool is additionally provided with the positioning component for fixing measurement auxiliary member (201) axial movement, the positioning Component is set in the measurement auxiliary member (201) and the measurement auxiliary member (201) can rotate relative to the positioning component.

10. the bearing protrusion measuring equipment according to any one of claim 8-9, it is characterised in that also including control System, the control system includes monitoring device and main controller, institute's displacement sensors (100) and the Pneumatic elevation unit Electrically connected respectively with the main controller.