CN219359410U - Quick positioning floating supporting tool for crankshaft for three-coordinate detection - Google Patents
Quick positioning floating supporting tool for crankshaft for three-coordinate detection Download PDFInfo
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- CN219359410U CN219359410U CN202320279363.8U CN202320279363U CN219359410U CN 219359410 U CN219359410 U CN 219359410U CN 202320279363 U CN202320279363 U CN 202320279363U CN 219359410 U CN219359410 U CN 219359410U
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Abstract
The utility model provides a three coordinates detect with bent axle quick positioning floating support instrument belongs to bent axle detection technical field. Including supporting the base, support base upper portion left and right sides symmetry and be equipped with gyro wheel supporting mechanism, support the base bottom and be equipped with floating supporting mechanism, floating supporting mechanism includes backing plate, holder, steel ball and bottom plate, and the backing plate level is fixed in supporting the base lower part, and the backing plate lower part is located to the bottom plate level, and backing plate and bottom plate opposite face are the plane, are equipped with the multiple spot position plane rolling pair that comprises holder and multirow steel ball between backing plate and the bottom plate, and the equal fixedly connected with side shield in backing plate both sides, two side shield medial surfaces and bottom plate both sides face all leave the clearance. The utility model improves the existing crankshaft support tool, does not limit the movement track of the ball, realizes the self-adaptive centering of the roller of the crankshaft support tool, reduces the auxiliary time for supporting, positioning, aligning and adjusting the crankshaft before detecting on a three-coordinate machine, and greatly improves the detection efficiency of the crankshaft on the three coordinates.
Description
Technical Field
The utility model belongs to the technical field of crankshaft detection, and particularly relates to a crankshaft rapid positioning floating support tool for three-coordinate detection.
Background
The crankshaft is the most critical core component of the diesel engine. The processing quality of the crankshaft is related to the overall performance of the diesel engine, so that the final inspection after the crankshaft is manufactured is very important. The journal diameter size of the crankshaft can be detected by a conventional method, but other geometric accuracies such as main journal cylindricity, straightness, coaxiality, phase angle error of a crank pin and the like can be detected only on a three-coordinate machine. The crankshaft structurally belongs to a special-shaped piece, and a group of special supporting frames similar to V-shaped iron are used for positioning and clamping during processing and detection.
In the final inspection, the crankshaft is required to be supported by a group of 3 or 4 brackets with equal height and on one axis at the lower edge of a main journal at a specified position according to design rules, so that the crankshaft is detected in a theoretical free state of being not bent by self weight and not subjected to any lateral component force. In the existing supporting tool, although the supporting roller can be moved and adjusted in the up-down direction, the left-right direction of the axis of the crankshaft cannot be adjusted. The three-coordinate operator adjusts a group of supporting tools to be in a state completely meeting the crankshaft detection requirement, and the supporting tools are usually required to be repeatedly checked, so that time and labor are wasted, most of the time in the whole detection process is occupied by the adjusting time before detection, and the detection efficiency is quite low.
The floating bracket disclosed in patent number 201621156686.4 has the advantages that the roller support base of the used adjustable floating bracket can float left and right on a plane, so that the jumping amount of a main journal of a crankshaft in the radial direction of the horizontal plane is not interfered during the rotation of the crankshaft for detection, and the detection precision is not influenced. But before the support frame is used, the roller frame must be adjusted to be completely parallel to the support frames at two ends, so that the support frame is more troublesome to adjust and has poor convenience. There is therefore a need for improvements.
Disclosure of Invention
The utility model solves the technical problems that: the utility model provides a crankshaft rapid positioning floating support tool for three-coordinate detection, which improves the existing crankshaft support tool, keeps a base plate and a bottom plate as planes, increases a steel ball retainer, enables a multi-point plane rolling pair consisting of a plurality of rows of steel balls and a plurality of columns of steel balls and the retainer to move between the base plate and the bottom plate at will, does not limit the movement track of the balls, realizes the self-adaptive centering of rollers of the crankshaft support tool, reduces the auxiliary time of supporting, positioning, aligning and adjusting the crankshaft before detection on a three-coordinate machine, and greatly improves the detection efficiency of the crankshaft on three coordinates.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
the utility model provides a quick location floating support instrument of bent axle for three-dimensional detection, includes the support base, support base upper portion left and right sides symmetry is equipped with gyro wheel supporting mechanism, it is equipped with floating support mechanism to support the base bottom, floating support mechanism includes backing plate, holder, steel ball and bottom plate, the backing plate level is fixed in support base lower part, the backing plate lower part is located to the bottom plate level, backing plate and bottom plate are parallel to each other, backing plate and bottom plate opposite face are the plane, be equipped with the multiple spot position plane rolling pair that comprises holder and multirow steel ball between backing plate and the bottom plate, the equal fixedly connected with side shield in backing plate both sides, two side shield medial surface and bottom plate both sides face all leave the clearance.
In the preferable mode of the proposal, the backing plate and the bottom plate are both made of ground steel plates after heat treatment quenching,
in a preferred mode of the scheme, the steel balls on the retainer are arranged in 5 rows.
In the preferable mode of the scheme, the four corners of the bottom plate are respectively provided with an adjusting screw and a supporting foot, and the lower end head of the adjusting screw is positioned in the supporting foot by a split locking piece and can rotate along the axis.
In the preferable mode of the scheme, hanging rings are arranged on the upper parts of the two sides of the bottom plate.
In the preferable mode of the scheme, the left side surface and the right side surface of the upper part of the supporting base are symmetrically inclined, and the two groups of roller supporting mechanisms are symmetrically and obliquely arranged on the inclined surfaces on the two sides of the supporting base; each group of roller supporting mechanism comprises a roller component, a sliding block, a nut seat and a screw rod, wherein a sliding key is fixed under the sliding block, the sliding block is matched with a ring groove on a corresponding inclined plane of a supporting base through the sliding key and a T-shaped groove bolt in a sliding manner, the sliding block can slide up and down in the middle of the inclined plane of the supporting base, the nut seat is fixedly connected with the lower portion of the supporting base, the nut seat is fixedly connected with the supporting base through a fixed key and a bolt, the screw rod is screwed on the nut seat, and a ball head of the screw rod is fixed in the sliding block through a circular pressing plate with two petals.
In the preferable mode of the scheme, the middle of the roller assembly is of a bearing structure, and the outer ring of the roller assembly is of a brass insert sleeve.
Compared with the prior art, the utility model has the advantages that:
1. according to the scheme, the existing crankshaft supporting tool is improved, two V-shaped fixed rollaway nest grooves on the existing floating tool are canceled, the base plate and the bottom plate are kept to be plane surfaces, the steel ball retainer is added, a multi-point plane rolling pair consisting of a plurality of rows of steel balls and a plurality of columns of steel balls and the retainer is enabled to move randomly between the base plate and the bottom plate, the movement track of the steel balls is not limited, the roller frame can move left and right and can rotate around a vertical axis in an adaptive manner, the roller self-adaptive centering of the crankshaft supporting tool is achieved, the auxiliary time for supporting, positioning, aligning and adjusting the crankshaft before detection on a three-coordinate machine is reduced, and therefore the detection efficiency of the crankshaft on the three coordinates is greatly improved;
2. the scheme comprehensively utilizes the working principle of self-adaptive centering of the ball mechanism and the floating support frame, improves the original floating support frame, and facilitates quick placement, quick positioning and quick adjustment of the support frame during three-coordinate crankshaft detection.
Drawings
FIG. 1 is a schematic perspective view of the present utility model;
FIG. 2 is a front view of the present utility model;
FIG. 3 is an enlarged schematic view of portion A of FIG. 2 in accordance with the present utility model;
FIG. 4 is a side view of the present utility model;
FIG. 5 is a top view of the present utility model;
fig. 6 is a schematic diagram of the use of the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
Referring to fig. 1-6, embodiments of the present utility model are described in detail.
Examples: the crankshaft rapid positioning floating support tool for three-coordinate detection is shown in fig. 1, and comprises a support base 6, wherein roller support mechanisms are symmetrically arranged on the left side and the right side of the upper part of the support base 6. The left side surface and the right side surface of the upper part of the supporting base 6 are symmetrically inclined, and the two groups of roller supporting mechanisms are symmetrically and obliquely arranged on the inclined surfaces of the two sides of the supporting base 6.
In an embodiment, referring to fig. 2-5, each set of roller supporting mechanism includes a roller assembly 1, a slider 2, a nut seat 4 and a screw rod 5, a sliding key 11 is fixed under the slider 2, the slider 2 is slidably matched with a ring groove on a corresponding inclined plane of the supporting base 6 through the sliding key 11 and a T-shaped groove bolt 10, and enables the slider 2 to slide up and down in the middle of the inclined plane of the supporting base 6, the nut seat 4 is fixedly connected with the lower part of the inclined plane of the supporting base 6, the nut seat 4 is fixedly connected with the supporting base 6 through a fixed key 12 and a bolt, the screw rod 5 is screwed on the nut seat 4, and a ball head of the screw rod 5 is fixed in the slider 2 through a two-flap round pressing plate 3. The screw rod 5 is suitable for fine adjustment of the middle and high of the roller frame of the fixed support.
Preferably, the middle of the roller assembly 1 is a bearing structure, and the outer ring of the roller assembly 1 is a brass insert sleeve, so that the roller assembly is softer in hardness, and the surface of a crankshaft journal cannot be damaged by pulling in use.
Preferably, the roller assembly 1 is provided with a plurality of specifications with different diameters and thicknesses so as to meet the detection requirements of crankshafts with different specifications of journals and gear ranges.
In one embodiment, a floating support mechanism is arranged at the bottom of the support base 6; preferably, the floating support mechanism comprises a base plate 13, a retainer 14, steel balls 15 and a bottom plate 16, wherein the base plate 13 is horizontally fixed at the lower part of the support base 6, the bottom plate 16 is horizontally arranged at the lower part of the base plate 13, the base plate 13 and the bottom plate 16 are mutually parallel, opposite surfaces of the base plate 13 and the bottom plate 16 are all planes, and a multi-point plane rolling pair consisting of the retainer 14 and a plurality of rows and columns of steel balls 15 is arranged between the base plate 13 and the bottom plate 16.
The original crankshaft support tool is improved in the structure, the original two V-shaped fixed raceway grooves are canceled, the base plate and the bottom plate are kept to be planes, the steel ball retainer is added, the multi-point plane rolling pair consisting of a plurality of rows of steel balls and a plurality of columns of steel balls and the retainer moves between the base plate and the bottom plate at will, and the movement track of the balls is not limited, so that the roller frame can move left and right and can rotate around a vertical axis in an adaptive manner, the support base can move and rotate freely on the bottom plate in a certain range, so that the support roller can be adjusted in an adaptive manner when being in contact with a crankshaft journal, the roller self-adaptive centering of the crankshaft support tool is realized, the auxiliary time for supporting, positioning, aligning and adjusting the crankshaft before detection on a three-coordinate machine is reduced, and the detection efficiency of the crankshaft on the three-coordinate machine is greatly improved. The structure does not limit the degree of freedom of movement of the support roller mechanism in the Y-axis direction and the degree of freedom of rotation in the Z-axis direction in the horizontal plane.
In an embodiment, the two sides of the backing plate 13 are fixedly connected with the side baffles 7, and certain gaps are reserved between the inner side surfaces of the two side baffles 7 and the two side surfaces of the bottom plate 16, so that the supporting roller can move left and right moderately and rotate around the vertical axis in a small range when contacting with the crankshaft journal conveniently, and self-adaptive centering is realized.
Preferably, the pad 13 and the bottom plate 16 are made of steel plates which are ground after heat treatment quenching, so as to increase the hardness and wear resistance of the contact surfaces of the steel balls.
Preferably, the steel balls 15 on the retainer 14 are arranged in 5 rows, so that the total number of the steel balls is increased, the stress and strain of the weighing parts of the steel balls are greatly reduced, the bearing effect and the floating effect of the large diesel engine crankshaft during detection are obviously improved, the crankshaft rotates stably during crankshaft detection, the detection result is more reliable, and the service life of the floating support frame is greatly prolonged due to the improved structure.
The ball socket depth in the retainer 14 is carefully calculated and controlled, so that the steel balls 15 can freely roll, the bottom surface of the retainer 14 is in a suspended state, and friction contact with the bottom plate 16 is avoided, and the floating effect of the support frame is not affected.
In an embodiment, the four corners of the bottom plate 16 are respectively provided with an adjusting screw 8 and a supporting leg 9, so that the overall height of the supporting tool can be adjusted to adapt to different height difference requirements when the supporting rollers are supported at different diameter positions. The lower end head of the adjusting screw 8 is positioned in the supporting leg 9 by the split locking piece 17 and can rotate along the axis, the bottom plate 16 and the supporting leg 9 form a space in the height direction, and the tool is conveniently transported by using a portable manual hydraulic forklift in a three-coordinate room.
Preferably, the adjusting screw 8 and the support leg 9 are suitable for coarse adjustment of the height direction in different crankshaft specifications and different support height requirements.
In an embodiment, the hanging rings 18 are arranged at the upper parts of the two sides of the bottom plate 16, so that the tool is convenient to manufacture, load, unload and transport and is convenient to lift by using a steel wire rope.
When the floating crankshaft support frame is used, the fixed support frame and the floating support frame are matched for use. All the fixing brackets are troublesome to adjust, time and labor are wasted, but all the floating brackets slightly rotate the whole crankshaft to generate position movement when detecting the crankshaft, so that a coordinate system is elegant, and the detection result is influenced. Therefore, when in use, referring to fig. 6, the fixed support frames at the two ends of the crankshaft should be adjusted to be at the same height and coaxial, then the floating support frame is placed at the middle support position, and only the height of the two rollers needs to be adjusted to be in proper contact with the crankshaft journal, so that the left and right directions can be automatically centered. Thus the adjustment time is greatly reduced.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (7)
1. The utility model provides a three coordinates detect with bent axle quick positioning floating support instrument, includes support base (6), support base (6) upper portion left and right sides symmetry is equipped with gyro wheel supporting mechanism, its characterized in that: the utility model discloses a support base, including base (6), support base (6) bottom is equipped with floating support mechanism, floating support mechanism includes backing plate (13), holder (14), steel ball (15) and bottom plate (16), backing plate (13) level is fixed in support base (6) lower part, bottom plate (16) level is located backing plate (13) lower part, backing plate (13) and bottom plate (16) are parallel to each other, backing plate (13) and bottom plate (16) opposite surfaces are the plane, be equipped with the multiple spot position plane rolling pair of constituteing by holder (14) and multirow steel ball (15) between backing plate (13) and bottom plate (16), backing plate (13) both sides equal fixedly connected with side shield (7), two side shield (7) medial surface and bottom plate (16) both sides face all leave the clearance.
2. The three-dimensional inspection crankshaft quick positioning floating support tool according to claim 1, wherein: the backing plate (13) and the bottom plate (16) are made of ground steel plates after heat treatment quenching.
3. The three-dimensional inspection crankshaft quick positioning floating support tool according to claim 1, wherein: the steel balls (15) on the retainer (14) are arranged in 5 rows.
4. The three-dimensional inspection crankshaft quick positioning floating support tool according to claim 1, wherein: the four corners of the bottom plate (16) are respectively provided with an adjusting screw (8) and a supporting foot (9), and the lower end head of the adjusting screw (8) is positioned in the supporting foot (9) by a split locking piece (17) and can rotate along the axis.
5. The three-dimensional inspection crankshaft quick positioning floating support tool according to claim 1, wherein: hanging rings (18) are arranged on the upper parts of the two sides of the bottom plate (16).
6. The three-dimensional inspection crankshaft quick positioning floating support tool according to claim 1, wherein: the left side surface and the right side surface of the upper part of the supporting base (6) are symmetrically inclined, and the two groups of roller supporting mechanisms are symmetrically and obliquely arranged on the inclined surfaces of the two sides of the supporting base (6); each group roller supporting mechanism comprises a roller component (1), a sliding block (2), a nut seat (4) and a screw rod (5), a sliding key (11) is fixed under the sliding block (2), the sliding block (2) is matched with a sliding groove on a corresponding inclined plane of a supporting base (6) through the sliding key (11) and a T-shaped groove bolt (10) in a sliding manner, the sliding block (2) can slide up and down in the middle of the inclined plane of the supporting base (6), the nut seat (4) is fixedly connected with the lower inclined plane of the supporting base (6), the nut seat (4) is fixedly connected with the supporting base (6) through a fixed key (12) and the bolt, the screw rod (5) is screwed on the nut seat (4), and a ball head of the screw rod (5) is fixed in the sliding block (2) through a circular pressing plate (3) with two petals.
7. The three-dimensional inspection crankshaft quick positioning floating support tool according to claim 6, wherein: the middle of the roller assembly (1) is of a bearing structure, and the outer ring of the roller assembly (1) is of a brass inlay sleeve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320279363.8U CN219359410U (en) | 2023-02-22 | 2023-02-22 | Quick positioning floating supporting tool for crankshaft for three-coordinate detection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202320279363.8U CN219359410U (en) | 2023-02-22 | 2023-02-22 | Quick positioning floating supporting tool for crankshaft for three-coordinate detection |
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| CN219359410U true CN219359410U (en) | 2023-07-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116727398A (en) * | 2023-08-16 | 2023-09-12 | 沈阳仪表科学研究院有限公司 | Heliostat cleaning test device and installation method thereof |
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- 2023-02-22 CN CN202320279363.8U patent/CN219359410U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116727398A (en) * | 2023-08-16 | 2023-09-12 | 沈阳仪表科学研究院有限公司 | Heliostat cleaning test device and installation method thereof |
| CN116727398B (en) * | 2023-08-16 | 2023-10-31 | 沈阳仪表科学研究院有限公司 | Heliostat cleaning test device and installation method thereof |
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