CN221006174U - Large slewing bearing radial raceway detection device - Google Patents

Abstract

The utility model belongs to the technical field of bearing detection, and particularly relates to a large slewing bearing radial raceway detection device which comprises a chuck, wherein a bearing ring and a measurement base corresponding to the bearing ring are fixed on the chuck, a base rod is detachably connected in the measurement base, a measuring meter is arranged between the base rod and the bearing ring, a positioning measuring head and a movable measuring head are respectively arranged at two ends of the measuring rod of the measuring meter, and the positioning measuring head and the movable measuring head are respectively in contact measurement with the base rod and the bearing ring raceway. According to the utility model, the measuring base and the base rod arranged on the chuck are used as measuring references of the bearing ring rollaway nest, so that the online measurement of the bearing ring rollaway nest in the processing is performed, the trouble that the bearing ring is additionally moved for measurement and reprocessed is avoided, meanwhile, the complex influence of temperature change in the processing and measuring processes can be avoided, the measuring error caused by factors such as human factors and checking tools is reduced, the measuring precision is improved, and the measuring step is simplified.

Description

Large slewing bearing radial raceway detection device

Technical Field

The utility model belongs to the technical field of bearing detection, and particularly relates to a large slewing bearing radial raceway detection device.

Background

The rotary play and precision of the large slewing bearing parts are key evaluation indexes of the bearing service life, and the traditional detection method comprises a pipe ruler and a sample ring. But the product fit rate is lower than 65% on the premise of rolling element single gauge value in industry for many years due to the influence of measurement accuracy, human factors and complex temperature, and the processing and fit quality and the output efficiency of the product are seriously influenced.

In particular, large slewing bearing raceways can be generally divided into spherical, V-shaped and rectilinear. The traditional final inspection means is diameter measurement, and the measuring tool is generally completed by adopting a pipe ruler (divided into a ball head and a straight-face measuring head) and a sample ring in a matching way (see a first drawing). However, due to the influence of adverse factors such as deformation of the sample ring, artificial detection deviation, complex temperature change and the like, the single comprehensive detection error is larger than 0.12mm, and the matched tolerance requirement cannot be met, so that the single-standard one-time fitting rate of slewing bearing products with the length of more than 3 meters can only be about 65%, and the rest of slewing bearing products are required to be repaired for re-matching for two or even three times, so that the quality is influenced by the accumulated deviation, and the production efficiency is reduced. And is present: 1. limited by the measurement range of three coordinates (sample blocks), the oversized sample ring cannot be effectively checked, and the application site storage is difficult; 2. the measurement accuracy error caused by the deformation of the sample ring is about 0.05-0.09mm; 3. storing the sample ring at room temperature, wherein complicated temperature change exists, and the change value of the diameter of 3 meters is 0.045 mm/DEG C; 4. the manual detection error is about 0.05mm.

The last 3 integrated errors listed above are typically greater than 0.12mm (single piece) and cannot meet the mating tolerance requirements at all. Only if the expansion and contraction amount, the deviation of the shape of the sample ring, the human detection error and the detection error of the large-scale measuring tool caused by temperature are avoided, the detection precision of the large-scale workpiece at normal temperature can be negotiated, and the bearing fit rate can be ensured.

Disclosure of Invention

According to the defects existing in the prior art, the utility model aims to provide a large slewing bearing radial roller path detection device which is used for carrying out on-line measurement on the dimensional tolerance and the form and position tolerance of a roller path and is suitable for working procedures such as turning, grinding and the like.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the large slewing bearing radial raceway detection device comprises a chuck, wherein a bearing ring and a measurement base corresponding to the bearing ring are fixed on the chuck, a base rod is detachably connected in the measurement base, a measuring meter is arranged between the base rod and the bearing ring, a positioning measuring head and a movable measuring head are respectively arranged at two ends of the measuring rod of the measuring meter, and the positioning measuring head and the movable measuring head are respectively in contact measurement with the base rod and the bearing ring raceway.

Further, the measuring meter comprises an inner diameter dial indicator and a dial indicator/dial indicator, wherein a measuring rod of the inner diameter dial indicator measures the distance change between a base rod measuring point and a bearing ring raceway measuring point through a positioning measuring head and a movable measuring head, and the dial indicator/dial indicator displays a distance change value.

Further, the large slewing bearing radial raceway detection device further comprises a sample ring used for calibrating the measuring meter, and the inner diameter of the sample ring is consistent with the distance from the base rod measuring point to the bearing ring raceway measuring point.

Further, the bearing ring rollaway nest is a ball rollaway nest or a V-shaped rollaway nest, the movable measuring head is a straight measuring head, the positioning measuring head is a ball measuring head, the positioning measuring head is assembled into the ball rollaway nest or the V-shaped rollaway nest for positioning, and the movable measuring head is in contact measurement with the base rod.

Further, the bearing ring rollaway nest is a straight surface rollaway nest, the positioning measuring head and the movable measuring head are both straight measuring heads, the positioning measuring head is in contact positioning with the base rod, and the movable measuring head is in contact measurement with the straight surface rollaway nest.

Further, the base rod is connected in the measuring base through inserting grooves in an inserting mode, the inserting grooves are of conical structures which gradually shrink from top to bottom, and jackscrews used for limiting the base rod are arranged at the bottoms of the inserting grooves; the slot is communicated with a rotation stopping groove, the base rod is provided with a rotation stopping block matched with the rotation stopping groove, and the rotation stopping block is matched with the rotation stopping groove to circumferentially position the base rod.

Further, the measuring base is detachably connected to the chuck through bolts.

Further, the measuring base is slidably connected to the chuck through a slideway and is fixed through a bolt.

Further, the bearing ring is fixed on the chuck through a magnetic seat.

The detection method of the large slewing bearing radial raceway detection device comprises the steps of fixing a bearing ring and a measurement base on a chuck, rotating the chuck, after the bearing ring raceway is processed, installing a base rod in the measurement base, detecting the distance from a base rod measuring point to a bearing ring raceway measuring point through a positioning measuring head and a movable measuring head of a measuring meter by taking the base rod as a detection reference, and reprocessing the bearing ring raceway according to a detection result until the detection value of the measuring meter reaches a preset range.

Further, before the measuring meter is used, the measuring meter is calibrated through the sample ring, the inner diameter of the sample ring is consistent with the distance between the base rod measuring point and the bearing ring raceway measuring point, and the inner diameter of the sample ring is detected and the reading is zeroed by using the measuring meter.

The utility model has the beneficial effects that: according to the utility model, the measuring base and the base rod arranged on the chuck are used as measuring references of the bearing ring rollaway nest, so that the online measurement of the bearing ring rollaway nest in the processing is performed, the trouble that the bearing ring is additionally moved for measurement and reprocessed is avoided, meanwhile, the complex influence of temperature change in the processing and measuring processes can be avoided, the measuring error caused by factors such as human factors and checking tools is reduced, the measuring precision is improved, and the measuring step is simplified.

Drawings

FIG. 1 is a schematic view of a ball groove detection device;

FIG. 2 is a schematic diagram of a straight-face raceway detecting device

FIG. 3 is a schematic diagram of a test sample loop;

In the figure: 1. ball slewing bearing inner ring 2, measuring base, 3, basic pole, 4, internal diameter percentage table, 5, percentage table/dial gauge, 6, location ball gauge head, 7, movable straight gauge head, 8, location straight gauge head, 9, sample circle, 10, jackscrew, 11, rotation stopping block, 12, magnetic force seat, 13, chuck, 14, ball race, 15, three rows of slewing bearing inner rings, 16, straight face race, 17, bolt hole.

Detailed Description

In order to make the structure and function of the present utility model clearer, the technical solution in the embodiment of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present utility model.

Example 1

Referring to fig. 1, the large slewing bearing radial raceway detection device comprises a chuck 13, a ball slewing bearing inner ring 1 and a measuring base 2 corresponding to the ball slewing bearing inner ring 1 and arranged on the outer side are fixed on the chuck 13, a base rod 3 is detachably connected in the measuring base 2, an inner diameter dial indicator 4 and a dial indicator/dial indicator 5 are arranged between the base rod 3 and the ball slewing bearing inner ring 1, two ends of a measuring rod of the inner diameter dial indicator 4 are respectively provided with a positioning ball measuring head 6 and a movable straight measuring head 7, the positioning ball measuring head 6 is assembled in a ball raceway 14 for positioning, and the movable straight measuring head 7 is in contact measurement with the base rod 3. The measuring rod of the inner diameter dial indicator 4 measures the distance change between the measuring point of the base rod 3 and the measuring point of the ball race 14 through the positioning ball measuring head 6 and the movable straight measuring head 7, and the dial indicator/dial indicator 5 displays the distance change value.

Further, when the inner ring raceway of the slewing bearing is a V-shaped raceway, the positioning ball measuring head 8 is assembled into the V-shaped raceway for positioning, and the movable straight measuring head 7 is in contact measurement with the base rod 3.

Further, the base rod 3 is connected in the measuring base 2 through a slot in an inserting way, the slot is of a tapered structure which gradually contracts from top to bottom, and a jackscrew 10 for limiting the base rod 3 is arranged at the bottom of the slot; the slot is communicated with a rotation stopping groove, the base rod 3 is provided with a rotation stopping block 11 matched with the rotation stopping groove, and the rotation stopping block is matched with the rotation stopping groove to circumferentially position the base rod 3.

Further, the measuring base 2 is detachably connected to the chuck 13 through a bolt or the measuring base 2 is slidably connected to the chuck 13 through a slide rail and fixed, and compared with the bolt connection, the slide rail connection has the advantage of stepless adjustment, so that the distance between the base rod and the roller path can be better mastered.

Further, the ball slewing bearing inner ring 1 is fixed on a chuck 13 through a magnetic seat 12.

The radial detection device and the detection method are applied to large slewing bearing products, can detect dimensional tolerances and form and position tolerances of a plurality of raceway surfaces such as complex curved surfaces, spheres, V-shaped, step surfaces, straight surfaces and the like, are suitable for working procedures such as turning, grinding and the like, play a decisive role in bearing raceway matching and assembly working procedures, and have detection accuracy within 0.01 mm.

The detection method of the large slewing bearing radial roller path detection device comprises the steps of fixing a ball slewing bearing inner ring 1 and a measurement base 2 on a chuck 13, rotating the chuck 13, processing a ball path of the ball slewing bearing inner ring 1, installing a base rod 3 in the measurement base 2, detecting the distance from a base rod measuring point to the ball path measuring point through a positioning ball head 8 and a movable straight measuring head 7 of a measuring rod of an inner diameter dial indicator 4 by taking the base rod 3 as a detection reference, and reprocessing the ball path according to a detection result until a detection value reaches a preset range.

Further, the large slewing bearing radial raceway detection device further comprises a sample ring 9 used for calibrating the inner diameter dial indicator 4 and the dial indicator/dial indicator 5, and the inner diameter of the sample ring 9 is consistent with the distance from the base rod measuring point to the ball raceway measuring point. Before use, the inner diameter of the sample ring is measured by the inner diameter dial indicator 4 and the dial indicator/dial indicator 5, and the readings of the dial indicator/dial indicator 5 are zeroed by the inner diameter dial indicator 4 and the dial indicator/dial indicator 5. And measuring the distance from the base rod measuring point to the ball track measuring point by using an inner diameter dial indicator 4 and a dial indicator/dial indicator 5, and adjusting the processing state of the ball track by using the readings of the dial indicator/dial indicator 5. The utility model adopts a small sample ring with the diameter of 100mm, and the distance between the base rod measuring point and the ball track measuring point is 100mm.

Based on the technical scheme, the position of the measuring base 2 relative to the bearing ring is fixed, the state during detection is single-point detection of the rollaway nest, the bearing ring is processed in a rotating way, and the rollaway nest data of the measuring points can be deduced to the data of the whole circumferential rollaway nest.

Through measurement and calculation, compared with the traditional pipe ruler diameter measurement method, the comprehensive detection precision of the slewing bearing class with the diameter of more than 3 meters is improved to 0.02mm from 0.12mm, an operator can operate the slewing bearing class by a single person without repeated measurement of a running water operator and an inspector, labor cost and consumption material cost of a measuring tool are saved, positive significance is brought to preventing quality risks caused by repeated repair (grinding) of the slewing bearing class, and the once-fit rate of the slewing bearing class is ensured to reach 98% of rigidity index.

If the ball slewing bearing outer ring is detected, the measuring base 2 and the matched measuring tool are required to be installed on the inner diameter side of the ball slewing bearing outer ring, and other structures and measuring methods are unchanged.

The utility model adopts a novel measuring device, and the design structure is as follows: the measuring base, the reference rod, the small sample ring with the diameter of 100mm, the inner diameter dial indicator and the dial indicator (or dial indicator) are combined. The base and the reference rod are combined to form a reference piece, which is also a key part of the device, and the base rod is required to have high positioning and repeated positioning precision to the base and can be freely inserted and withdrawn. The working principle is that the base is fixed on the plane of the chuck (connected with a T-shaped block), and the base rod is pulled out of the base during processing; during detection, the base rod is inserted into the base, then an inner diameter dial indicator is used for measuring the distance between the machining diameter and the base rod (see the second and third drawings), the required detection value is qualified, and if not, machining is continued until the machining reaches the standard. The innovation point of the utility model is as follows:

1. A one-to-one sample ring is canceled, a small sample ring with the diameter of 100-150mm is used for replacing, and the three-coordinate detection value or the fitting torque value of the first parts of the inner ring and the outer ring are processed to determine the matching clearance of the batch of products, so that the shape error and the temperature expansion and contraction amount caused by the sample ring are eliminated;

2. The measurement of a pipe ruler is canceled, and the combination of an inner diameter dial indicator and a small sample ring (with the diameter of 100-150 mm) is used for substitution, wherein the measuring head of the inner diameter dial indicator is divided into a straight rod and a ball head (see the second and the third of the attached drawings), and the straight-face ball track and the spherical (or V-shaped) ball track respectively correspond to each other, and the measurement is carried out through the calibration of the pipe ruler by the sample ring, so that the measurement error and the temperature expansion and contraction amount caused by the measurement of the pipe ruler and the diameter are avoided;

3. Eliminating double manual cooperation detection, and avoiding the deviation by using a single person and an inner diameter percentage ruler, particularly, manually measuring the deviation caused by different 2 person combinations of the same workpiece (such as three aspects of an operator, an inspector and a pipelayer);

4. The complex temperature compensation (the sample ring, the ring making, the ring matching and the checking fixture are required to calculate the temperature compensation respectively) is canceled, the temperature of the ring making is set as a reference, and the temperature expansion and contraction difference value can be eliminated by carrying out the temperature compensation once on the matched ring.

The set of radial detection device and detection method are developed successfully, are widely applied to final detection of various slewing bearing vehicles and raceway grinding procedures, improve the fit rate to above 98%, ensure that the detection accuracy of straightness reaches 0.001mm, and completely meet the technical requirements of bearing matching less than or equal to 0.02 mm. The device and the detection method thereof also provide a brand new broad-spectrum detection scheme for the final processing of the large ring raceway, and have high application value and social value.

Example 2

Referring to fig. 2, the structure of example 2 is basically the same as that of example 1, except that example 2 measures the straight-face raceway 16 of the three rows of slewing bearing inner rings 15, positions the straight-line gauge head 8 in contact with the base rod 3, and the movable straight-line gauge head 7 in contact with the straight-face raceway 16.

It should be noted that the detailed portions of the present utility model are not described in the prior art.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

The foregoing list is only the preferred embodiments of the present utility model. Obviously, the utility model is not limited to the above embodiments, but many variations are possible. All modifications directly derived or suggested to one skilled in the art from the present disclosure should be considered as being within the scope of the present utility model.

Claims (9)

1. The utility model provides a radial raceway detection device of large-scale slewing bearing which characterized in that: the measuring device comprises a chuck, a bearing ring and a measuring base corresponding to the bearing ring are fixed on the chuck, a base rod is detachably connected in the measuring base, a measuring meter is arranged between the base rod and the bearing ring, a positioning measuring head and a movable measuring head are respectively arranged at two ends of the measuring rod of the measuring meter, and the positioning measuring head and the movable measuring head are respectively in contact measurement with a base rod and a bearing ring raceway.

2. The large slewing bearing radial raceway detection device of claim 1, wherein: the measuring meter comprises an inner diameter dial indicator and a dial indicator/dial indicator, wherein a measuring rod of the inner diameter dial indicator measures the distance change between a base rod measuring point and a bearing ring raceway measuring point through a positioning measuring head and a movable measuring head, and the dial indicator/dial indicator displays a distance change value.

3. The large slewing bearing radial raceway detection device of claim 1, wherein: the measuring device also comprises a sample ring for calibrating the measuring meter, wherein the inner diameter of the sample ring is consistent with the distance between the measuring point of the base rod and the measuring point of the bearing ring raceway.

4. The large slewing bearing radial raceway detection device of claim 1, wherein: the bearing ring roller path is a ball roller path or a V-shaped roller path, the movable measuring head is a straight measuring head, the positioning measuring head is a ball measuring head, the positioning measuring head is assembled into the ball roller path or the V-shaped roller path for positioning, and the movable measuring head is in contact measurement with the base rod.

5. The large slewing bearing radial raceway detection device of claim 1, wherein: the bearing ring roller path is a straight roller path, the positioning measuring head and the movable measuring head are both straight measuring heads, the positioning measuring head is in contact positioning with the base rod, and the movable measuring head is in contact measurement with the straight roller path.

6. The large slewing bearing radial raceway detection device of claim 1, wherein: the base rod is connected in the measuring base through the inserting groove in an inserting way, the inserting groove is of a conical structure which gradually contracts from top to bottom, and a jackscrew used for limiting the base rod is arranged at the bottom of the inserting groove.

7. The large slewing bearing radial raceway detection device of claim 6, wherein: the slot is communicated with a rotation stopping groove, the base rod is provided with a rotation stopping block matched with the rotation stopping groove, and the rotation stopping block is matched with the rotation stopping groove to circumferentially position the base rod.

8. The large slewing bearing radial raceway detection device of claim 1, wherein: the measuring base is detachably connected to the chuck through bolts.

9. The large slewing bearing radial raceway detection device of claim 1, wherein: the measuring base is connected to the chuck in a sliding manner through a slideway and is fixed through a bolt.