CN206311027U - Miniature bearing temperature of inner ring during rotation circular runout testing agency - Google Patents

Abstract

The utility model relates to a radial runout detection mechanism for the rotating inner ring of a miniature bearing, which comprises a base, a bearing fixing seat arranged on the base and a radial runout detection assembly. The fixed outer ring locates the locking cavity, and the radial runout detection assembly includes a torsion spring watch, a torsion spring watch seat and an inner ring rotating loading shaft, and the inner ring rotating loading shaft includes a tapered shaft with a conical insertion end at one end, The tapered shaft has a reference shaft section with a ring-shaped smooth surface, and the other end of the tapered shaft is provided with a gravity loading block. The ring finish on the shaft section interferes with the fit. It has the advantages of reasonable and accurate measurement and guarantees that the measured value is accurate and reliable.

Description

Mechanism for Radial Runout Detection of Rotating Inner Ring of Miniature Bearing

technical field

The utility model relates to the technical field of bearing detection equipment, in particular to a mechanism for measuring the radial runout of a miniature bearing when the inner ring of the bearing rotates.

Background technique

Due to the small inner diameter of the miniature bearing, the head of the measuring gauge cannot directly contact the surface of the inner ring when measuring the runout of the inner ring. At present, the existing radial runout detection of the inner ring of miniature bearings generally involves a horizontally fixed tapered shaft passing through the inner ring of the bearing, and the head of the measuring gauge is in contact with the outer surface of the outer ring. When measuring the radial runout of the inner ring, the outer ring of the bearing is fixed, and the taper shaft is manually rotated to drive the inner ring to rotate, and the radial runout of the inner ring is obtained through the torsion spring gauge connected to the head of the measuring gauge. However, this measuring device does not use the outer ring as a reference to measure the runout of the inner ring during measurement, which affects the measurement accuracy. Moreover, when measuring the radial runout of the inner ring, the probe does not contact the inner ring, but measures the radial runout of the inner ring by contacting the fixed outer ring, which affects the measurement accuracy.

Contents of the invention

Purpose of the invention of the utility model: In order to overcome the defects existing in the prior art, the utility model provides a radial runout detection of the inner ring of the miniature bearing which is reasonable and accurate and ensures accurate and reliable measurement of the displayed value. mechanism.

In order to achieve the above object, the utility model provides the following technical solutions:

A radial runout detection mechanism for the rotating inner ring of a miniature bearing, comprising a base, a bearing fixing seat on the base, and a radial runout detection assembly, characterized in that: the bearing fixing seat is provided with an outer ring of the bearing to be tested. The outer ring is locked and fixed in the positioning locking cavity. The radial runout detection assembly includes a torsion spring watch, a torsion spring watch seat and an inner ring rotating loading shaft. The inner ring rotating loading shaft includes a cone with a conical insertion end at one end. The tapered shaft has a reference shaft section with a ring-shaped smooth surface, and the other end of the tapered shaft is provided with a gravity loading block. The torsion spring table is fixedly installed on the torsion spring table seat. The annular finish on the datum section of the shaft interferes with the fit.

By adopting the above-mentioned technical scheme, the taper shaft is closely matched with the inner ring of the bearing to be tested, and the runout of the taper shaft is measured to indirectly measure the radial runout of the inner ring of the bearing to be tested, which improves the measurement accuracy of the radial runout of the miniature bearing and simplifies the The measurement method has improved the measurement speed.

Preferably, the torsion spring watch seat includes a sliding base and a lifting adjustment seat, the sliding base includes a mounting base plate and a vertical mounting plate, and the mounting base plate of the sliding base can slide along the side of the bearing fixing seat and the position can be adjusted. Set on the base, the lifting adjustment seat is set on the vertical mounting plate of the sliding base in a way that can be slid up and down, and the position can be adjusted. Inside the clamping sleeve of the torsion spring watch.

Preferably, the base is provided with a T-shaped guide groove with an inverted "T" shape in cross-section, and the bottom of the installation base plate of the sliding base is provided with a guide protrusion that cooperates with the positioning guide of the upper groove cavity of the T-shaped guide groove , the mounting base plate of the sliding base is provided with a base bolt hole, and a locking bolt is inserted in the base bolt hole, and a sliding block is provided at the lower end of the locking bolt, and the sliding block can slide along the T-shaped guide groove The way limit is installed in the lower groove cavity of the T-shaped guide groove. The upper end of the locking bolt passes through the bolt hole of the base and is screwed with a compression nut. The sliding base is supported on the base, and the installation bottom plate of the sliding base is locked. The fastening bolts and compression nuts can be compressed and locked on the base. Under the structural design, the structure is simple, the sliding base is firmly and reliably installed and fixed, and the adjustment operation is convenient.

Preferably, the vertical mounting plate of the sliding base is provided with a vertically extending guide groove and a strip-shaped adjustment hole corresponding to the position of the guide groove, the strip-shaped adjustment hole communicates with the guide groove, and the lifting adjustment seat is provided with The positioning slider matched with the sliding guide of the guide groove, the lifting adjustment seat is supported on the vertical mounting plate, the lifting adjustment seat is fixedly connected with a tension bolt, the tension bolt passes through the bar-shaped adjustment hole, and the adjustment nut is threaded , the lifting adjustment seat can be compressed and locked on the vertical mounting plate through tension bolts and adjustment nuts. Under this structural design, when adjusting, loosen the adjusting nut so that the lifting adjusting seat can slide along the guide groove, and at the same time, the tightening bolt moves synchronously along the bar-shaped adjusting hole. After the position adjustment is completed, tighten the adjusting nut. Tighten bolts to compress and lock the lifting adjustment seat on the vertical mounting plate.

Preferably, the clamping sleeve of the torsion spring watch includes a positioning ring and a clamping ring with an elastic opening, the clamping ring and the positioning ring are coaxially arranged, the positioning ring is located at the beginning of the insertion assembly of the torsion spring watch, and the elastic opening of the clamping ring There is an opening lock. Under this structural design, the positioning ring supports the positioning of the torsion spring watch, and then is clamped and fixed by the clamping ring, which has the advantage of firm and reliable installation of the torsion spring watch.

Preferably, the bearing fixing seat includes several bearing clamping blocks distributed in the circumference, and the bearing clamping blocks are provided with stepped grooves on the inner side of the circumference, and the stepped grooves on each bearing clamping block enclose the positioning and locking of the outer ring. cavity, each of the bearing clamping blocks is radially distributed and slidably arranged on the base, and a position locking assembly is arranged on the bearing clamping blocks. Under this structural design, step grooves are arranged on multiple bearing clamping blocks to realize the positioning installation and clamping and fixing of the shaft to be tested, the bearing to be tested is fixed firmly and reliably, and the operation is convenient.

Preferably, the base is provided with T-shaped track grooves with an inverted "T" shape in section, and the corresponding T-shaped track grooves are radially distributed. The position locking assembly includes a locking screw, and the lower end of the locking screw is There is a sliding limit block that can slide along the T-shaped track groove and is installed in the lower groove cavity of the T-shaped track groove. A through hole is provided on the bearing clamping block, and the bearing clamping block passes through the through hole Set on the locking screw, the bearing clamping block is supported on the base, the bottom of the bearing clamping block is provided with a sliding guide to match the positioning guide block in the upper groove of the T-shaped track groove, and the upper end of the locking screw passes through the through hole A compression nut is threaded and screwed, and the bearing clamping block can be compressed and locked on the base through the locking screw and the compression nut. Under the structural design, the structure is simple, the bearing to be tested is firmly and reliably fixed, and the operation is convenient.

Below in conjunction with accompanying drawing, the utility model is further described.

Description of drawings

Fig. 1 is a structural schematic diagram of the radial runout detection mechanism of the rotating inner ring of the miniature bearing in a specific embodiment of the present invention;

Fig. 2 is an exploded view of the radial runout detection assembly of a specific embodiment of the present invention;

Fig. 3 is a schematic structural diagram of a bearing fixing seat of a specific embodiment of the present invention;

Fig. 4 is a structural schematic diagram of the inner ring rotating loading shaft of a specific embodiment of the utility model;

Fig. 5 is a structural schematic diagram of a clamping sleeve for a torsion spring watch according to a specific embodiment of the present invention.

detailed description

Referring to accompanying drawings 1 to 5, the utility model discloses a radial runout detection mechanism of a miniature bearing rotating inner ring, which includes a base 1, a bearing fixing seat 2 arranged on the base 1 and a radial runout detection assembly 3, The bearing holder 2 is provided with an outer ring positioning and locking cavity 21 for locking and fixing the outer ring of the bearing 9 to be tested, and the radial runout detection assembly 3 includes a torsion spring watch 31, a torsion spring watch seat 32 and an inner ring rotating loading Shaft 33, the inner ring rotating loading shaft 33 includes a tapered shaft 331 with a conical insertion end at one end, the tapered shaft 331 has a reference shaft section with a ring-shaped smooth surface, and the other end of the tapered shaft 331 is provided with a gravity loading block 332, the torsion spring watch 31 is fixedly installed on the torsion spring watch seat 32, and the head of the torsion spring watch 31 is in conflict with the ring smooth surface on the reference shaft section of the tapered shaft 331. The taper shaft is closely matched with the inner ring of the bearing to be tested, and the gravity loading block is rotated so that the inner ring of the bearing to be tested rotates smoothly based on the outer ring, and the radial runout of the inner ring is obtained by measuring the runout of the taper shaft closely matched with the inner ring. The measurement accuracy of the radial runout of the miniature bearing is improved, the measurement method is simplified, and the measurement speed is increased.

In this specific embodiment, the torsion spring table seat 32 includes a sliding base and a lifting adjustment seat 323, and the sliding base includes a mounting base plate 321 and a vertical mounting plate 322, and the mounting base plate 321 of the sliding base can be positioned along the bearing fixing base 2. The side sliding and position adjustable mode is arranged on the base 1, and the lifting adjustment seat 323 is arranged on the vertical mounting plate 322 of the sliding base in a slidable lifting and position adjustable manner, and the lifting adjustment seat 323 is provided with a twist Reed watch clamping sleeve 324 , the torsion spring watch 31 is installed in the torsion spring watch clamping sleeve 324 . In this way, the lateral relative position of the torsion spring watch corresponding to the bearing fixing seat and the height position of the torsion spring watch can be adjusted, so as to ensure that the matching position between the head of the torsion spring watch and the rotating loading shaft of the inner ring is accurate and reliable, so that the torsion spring watch The table head can be well adapted to the use of bearings of different specifications and sizes.

There are many existing designs in this field for sliding the seat body on another base, such as adopting rails or guide shafts to install and lock the position through cylinders, motors or bolts, etc., but it is adopted in this specific embodiment. The base 1 is provided with a T-shaped guide groove 11 with an inverted "T" shape in cross-section, and the bottom of the installation base plate 321 of the sliding base is provided with a guide protrusion that cooperates with the positioning guide of the upper groove cavity of the T-shaped guide groove 11. 3211, the mounting bottom plate 321 of the sliding base is provided with base bolt holes, the base bolt holes are inserted with locking bolts 12, the lower end of the locking bolts 12 is provided with a sliding block 121, and the sliding block 121 can be The way of sliding along the T-shaped guide groove 11 is limited and installed in the lower groove cavity of the T-shaped guide groove 11. The upper end of the locking bolt 12 passes through the bolt hole of the base, and a compression nut 13 is screwed on, and the installation bottom plate of the sliding base 321 is supported on the base 1, and the installation bottom plate 321 of the sliding base can be compressed and locked on the base 1 through the locking bolt 12 and the compression nut 13. The structure is simple, the installation and fixing of the sliding base is firm and reliable, and the adjustment operation is convenient.

Similarly, there are various structures in this field in which a certain frame can be lifted and lowered, such as the direct installation and drive of the cylinder, or the drive and locking of the cylinder and the motor after the track installation, or the installation through the guide shaft. Finally, the position locking is realized by a positioning member (such as a bolt), but in this specific embodiment, the vertical mounting plate 322 of the sliding base is provided with a vertically extending guide groove 3221 and a bar-shaped corresponding to the position of the guide groove 3221. The adjustment hole 3222, the bar-shaped adjustment hole 3222 communicates with the guide groove 3221, the lifting adjustment seat 323 is provided with a positioning slider 3231 that cooperates with the guide groove 3221 sliding guide, the lifting adjustment seat 323 is supported on the vertical mounting plate 322, The lifting adjustment seat 323 is fixedly connected with a tension bolt 326, and the tension bolt 326 passes through the bar-shaped adjustment hole 3222, and is screwed with an adjustment nut 325. Press and lock on the vertical mounting plate 322 . When adjusting, loosen the adjusting nut, so that the lifting adjustment seat can slide along the guide groove, and at the same time, the tension bolts are displaced synchronously along the bar-shaped adjustment holes. The seat is compressed and locked on the vertical mounting plate. The structure is simple, and the processing and adjustment are convenient.

In addition, the clamping sleeve 324 of the torsion spring watch includes a positioning ring 3241 and a clamping ring 3242 with an elastic opening. The clamping ring 3242 and the positioning ring 3241 are coaxially arranged. The positioning ring 3241 is located at the beginning of the insertion assembly of the torsion spring watch. An opening locking member 3243 is provided at the elastic opening of the holding ring 3242 . The positioning ring supports the positioning of the torsion spring watch, and then is clamped and fixed by the clamping ring, which has the advantage of firm and reliable installation of the torsion spring watch. Of course, the clamping sleeve of the torsion spring watch can also adopt a two-petal structure, a semicircular fixed sleeve and a semicircular cover ring, and the installation and fixation of the torsion spring watch can be realized through the cover ring and the fixed sleeve, or fixed by a clamp, etc. Wait. The opening lock is designed with a bolt and nut assembly, and of course a toggle mechanism can also be used.

In this specific embodiment, the bearing fixing seat 2 includes several bearing clamping blocks 22 distributed in the circumference, and the bearing clamping blocks 22 are provided with stepped grooves 221 on the inner side of the circumference, and the stepped grooves 221 on each bearing clamping block 22 Enclosing the positioning and locking cavity 21 of the outer ring, each of the bearing clamping blocks 22 is slidably arranged on the base 1 in a radial distribution, and a position locking assembly is provided on the bearing clamping blocks 22 . Step grooves are set on multiple bearing clamping blocks to realize the positioning installation and clamping and fixing of the shaft to be tested, the bearing to be tested is fixed firmly and reliably, and the operation is convenient. Of course, the bearing outer ring fixing method can also be adopted, such as the existing bearing assembly fixing structure.

Further, the base 1 is provided with T-shaped track grooves 14 with an inverted "T" shape in section, and the corresponding T-shaped track grooves 14 are radially distributed. The position locking assembly includes a locking screw 15, The lower end of the locking screw 15 is provided with a sliding limit block 151 that can be slid along the T-shaped track groove 14 and fitted in the lower groove cavity of the T-shaped track groove 14. The bearing clamping block 22 is provided with a through hole, the bearing clamping block 22 is set on the locking screw 15 through the through hole, the bearing clamping block 22 is supported on the base 1, and the bottom of the bearing clamping block 22 is provided with a sliding guide matching the upper groove of the T-shaped track groove 14 The positioning guide block 222 in the cavity, the upper end of the locking screw 15 passes through the through hole and is screwed with a compression nut 16, and the bearing clamping block 22 can be compressed and locked on the base through the locking screw 15 and the compression nut 16 1 on.

Claims (7)

1. A radial runout detection mechanism for the rotating inner ring of a miniature bearing, comprising a base, a bearing holder arranged on the base and a radial runout detection assembly, characterized in that: the bearing holder is provided with a The outer ring of the bearing is locked and fixed, and the outer ring is positioned and locked. The radial runout detection component includes a torsion spring meter, a torsion spring meter seat, and an inner ring rotating loading shaft. The inner ring rotating loading shaft includes a conical insert at one end. The tapered shaft at the end of the tapered shaft has a reference shaft section with a ring-shaped smooth surface. The other end of the tapered shaft is provided with a gravity loading block. The torsion spring watch is fixedly installed on the torsion spring watch seat. The annular finish on the datum shaft section of the tapered shaft interferes with the fit. 2. The radial runout detection mechanism of the miniature bearing rotating inner ring according to claim 1, characterized in that: the torsion spring watch seat includes a sliding base and a lifting adjustment seat, and the sliding base includes a mounting base plate and a vertical mounting plate, The installation bottom plate of the sliding base is set on the base in a way that can slide along the side of the bearing fixing seat and the position can be adjusted. A clamping sleeve for a torsion spring watch is provided on the lifting adjustment seat, and the torsion spring watch is installed in the clamping sleeve for the torsion spring watch. 3. The radial runout detection mechanism of the miniature bearing rotating inner ring according to claim 2, characterized in that: the base is provided with a T-shaped guide groove with an inverted "T" shape in cross-section, and the installation of the sliding base The bottom of the base plate is provided with a guide protrusion that cooperates with the positioning guide of the upper groove cavity of the T-shaped guide groove. The installation base plate of the sliding base is provided with a base bolt hole, and a locking bolt is inserted in the base bolt hole. The lower end of the bolt is provided with a sliding block, and the sliding block is limitedly installed in the lower groove cavity of the T-shaped guide groove in a way that can slide along the T-shaped guide groove. The upper end of the locking bolt passes through the bolt hole of the base and is screwed There are compression nuts, and the installation bottom plate of the sliding base is supported on the base, and the installation bottom plate of the sliding base can be compressed and locked on the base through locking bolts and compression nuts. 4. According to claim 2 or 3, the radial runout detection mechanism of the rotating inner ring of the miniature bearing is characterized in that: the vertical mounting plate of the sliding base is provided with a vertically extending guide groove and a position corresponding to the guide groove. A strip-shaped adjustment hole, the strip-shaped adjustment hole communicates with the guide groove, the lifting adjustment seat is provided with a positioning slider that cooperates with the guide groove sliding guide, the lifting adjustment seat is supported on the vertical mounting plate, and the lifting adjustment seat is fixedly connected Tension bolts are arranged, and the tension bolts pass through the bar-shaped adjustment holes, and are screwed with adjustment nuts, and the lifting adjustment seat can be compressed and locked on the vertical mounting plate through the tension bolts and the adjustment nuts. 5. The radial runout detection mechanism of the miniature bearing rotating inner ring according to claim 1, characterized in that: the clamping sleeve of the torsion spring watch includes a positioning ring and a clamping ring with an elastic opening, and the clamping ring and the positioning ring are the same The shaft is arranged, the positioning ring is located at the beginning of the insertion assembly of the torsion spring watch, and the elastic opening of the clamping ring is provided with an opening locking piece. 6. The radial runout detection mechanism of the miniature bearing rotating inner ring according to claim 1, characterized in that: the bearing fixing seat includes several bearing clamping blocks distributed in a circle, and the bearing clamping blocks are provided with steps on the inner side of the circle Groove, the step groove on each bearing clamping block encloses the positioning and locking cavity of the outer ring, and each bearing clamping block is slidably arranged on the base in a radial distribution, and the bearing clamping block is provided with a position Lock components. 7. The radial runout detection mechanism of the rotating inner ring of the miniature bearing according to claim 6, characterized in that: the base is provided with a T-shaped track groove with an inverted "T" shape in cross-section, and each corresponding T-shaped track The slots are radially distributed, and the position locking assembly includes a locking screw, and the lower end of the locking screw is provided with a sliding limit block that can slide along the T-shaped track groove and is fitted in the lower groove cavity of the T-shaped track groove. There is a through hole on the bearing clamping block, the bearing clamping block is set on the locking screw through the through hole, the bearing clamping block is supported on the base, and the bottom of the bearing clamping block is equipped with a sliding guide to match the T The positioning guide block in the upper groove cavity of the track groove, the upper end of the locking screw passes through the through hole and is screwed with a compression nut, and the bearing clamping block can be compressed and locked on the base through the locking screw and the compression nut .