Rotary table mechanism for detecting composite brake disc

Abstract

The utility model discloses a rotary table mechanism for detecting a composite brake disc, which comprises a reference seat, a central ring and a rotating ring, the central ring is coaxially fixed on the reference seat, and the rotating ring is rotatably sleeved on the central ring in a concentric circle relation; a rotating mechanism is arranged between the lower end face of the rotating ring and the upper end face of the reference seat, and the rotating ring is rotationally connected with the reference seat through the rotating mechanism; the top face of the rotating ring is matched with the positioning face of a workpiece, a limiting mechanism matched with a workpiece mounting hole is arranged at the upper end of the rotating ring, and the workpiece drives the rotating ring to rotate together through the limiting mechanism. The detection device is simple in structure, stable and reliable, on the basis that the detection specification of an existing product is guaranteed, other driving mechanisms do not need to be additionally arranged, and detection of the composite disc, especially the aluminum composite disc which is prone to being scratched, is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of comprehensive measurement of brake discs, in particular to a turntable mechanism used for detecting composite brake discs. Background Art

[0002] On the brake disc comprehensive measuring machine, it is required to design a positioning table based on the reference surface of the part for inspection. There are currently two main positioning structures: 1. Design a precision hollow turntable, place the workpiece on the precision turntable for inspection, the motor drives the turntable to rotate, and the workpiece is inspected as the turntable rotates; 2. Make a positioning cone for centering according to the hole in the part, and then use the alloy positioning table as the positioning base surface for inspection, and the upper drive lever or the lower drive lever drives the workpiece to rotate for inspection.

[0003] During the inspection of the composite disc, since the positioning surface is mostly concave and scratches are not allowed on the positioning surface, the first positioning method has high positioning accuracy and rotation accuracy, but due to the relatively large size of the turntable itself and the high processing and manufacturing cost, it is relatively difficult to quickly change the model at the production site, and it cannot meet the inspection requirements of existing multi-specification products; the second positioning method can be compatible with the inspection of parts of various specifications, but since the positioning surface of the composite disc is made of a relatively soft material, it is easy to produce scratches due to friction with the alloy, resulting in defective products, and the measurement accuracy is greatly reduced due to scratches on the positioning surface. Utility Model Content

[0004] In order to solve the problems in the prior art, the utility model provides a simple, practical and low-cost turntable mechanism for composite brake disc detection that meets the current use, which can not only meet the detection needs of parts without scratching the composite disc positioning surface, but also is compatible with the original alloy positioning table and can be quickly changed.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A turntable mechanism for composite brake disc detection comprises a reference seat, a center ring and a rotating ring, wherein the center ring is coaxially fixed on the reference seat, and the rotating ring is rotatably sleeved on the center ring in a concentric circle relationship; a rotating mechanism is provided between the lower end surface of the rotating ring and the upper end surface of the reference seat, and the rotating connection between the rotating ring and the reference seat is realized through the rotating mechanism;

[0007] The top surface of the rotating ring matches with the positioning surface of the workpiece, and the upper end of the rotating ring is provided with a limiting mechanism matching with the installation hole of the workpiece, and the workpiece drives the rotating ring to rotate together through the limiting mechanism.

[0008] Preferably, the limiting mechanism comprises an elastic pin vertically mounted on the rotating ring, and the upper end of the elastic pin extends outward from the rotating ring;

[0009] When the positioning surface of the workpiece falls on the rotating ring, the elastic pin is pressed under the positioning surface and is in a compressed state;

[0010] The driving mechanism drives the workpiece to rotate. When the workpiece mounting hole passes through the elastic pin, the elastic pin extends out and slides into the workpiece mounting hole, and then the workpiece drives the rotating ring to rotate together.

[0011] Preferably, the main body of the elastic pin is made of plastic.

[0012] Preferably, the rotating mechanism comprises a retaining frame installed on the upper end surface of the reference seat, and steel ball holes are arranged circumferentially on the retaining frame. Steel balls are installed in each of the steel ball holes, and the steel balls form a rolling fit with the lower end surface of the rotating ring.

[0013] Preferably, the rotating ring and the center ring are clearance-fitted, and radial pistons are circumferentially distributed on the rotating ring, and the radial clearance between the rotating ring and the center ring is adjusted by the radial pistons.

[0014] Preferably, a mounting ring is fixed to the upper end of the center ring, which extends radially outward and exceeds the inner ring of the rotating ring, and the axial height of the mounting ring is lower than the axial height of the rotating ring; axial pistons are circumferentially distributed on the mounting ring, and the axial fitting clearance between the rotating ring and the reference seat is adjusted by the axial pistons.

[0015] Preferably, a dust ring is provided at the docking position between the rotating ring and the reference seat. The dust ring is installed on the rotating ring and extends downward to cover the outside of the reference seat.

[0016] Preferably, the inner ring of the rotating ring is provided with an annular groove, and a sealing ring is provided in the annular groove.

[0017] Preferably, the rotating ring is provided with a groove at the inner circle position of the top end, and a cover ring is installed in the groove.

[0018] Preferably, the inner diameter of the center ring is consistent with the inner diameter of the reference seat, and the outer diameter of the center ring is smaller than the outer diameter of the reference seat; the outer diameter of the rotating ring is consistent with the outer diameter of the reference seat.

[0019] Beneficial effects of the utility model:

[0020] The utility model has a simple structure, is stable and reliable, and on the basis of ensuring the existing product detection specifications, does not need to add other driving mechanisms, and realizes the detection of composite discs, especially aluminum composite discs that are easy to be scratched. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0022] Figure 2 for Figure 1 A top view of

[0023] Figure 3 for Figure 2 Middle BB section;

[0024] Figure 4 for Figure 2 Middle CC section;

[0025] Figure 5 This is a three-dimensional schematic diagram of the utility model after removing the cover ring;

[0026] Figure 6 for Figure 5 A top view of

[0027] Figure 7 for Figure 6 Middle AA section view.

[0028] The drawings are only used for illustrative purposes and should not be construed as limitations on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0030] like Figures 1 to 7 As shown, this embodiment provides a turntable mechanism for composite brake disc detection, including a reference seat 1, a center ring 2 and a rotating ring 3. The reference seat 1 has the same installation dimensions as the alloy seat on the equipment and can be quickly replaced. The center ring 2 is coaxially fixed to the reference seat 1 by screws, and the rotating ring 3 is rotatably sleeved on the center ring 2 in a concentric circle relationship. A rotating mechanism is provided between the lower end surface of the rotating ring 3 and the upper end surface of the reference seat 1, and the rotating connection between the rotating ring 3 and the reference seat 1 is realized by the rotating mechanism.

[0031] In this embodiment, the rotating mechanism includes a holder 4 installed on the upper end surface of the reference seat 1, and steel ball holes are arranged circumferentially on the holder 4. Steel balls 5 are installed in the steel ball holes, and the steel balls 5 form a rolling fit with the lower end surface of the rotating ring 3. It is noted that the same batch of steel balls should be used, and each contact surface has been finely super-finished. At the same time, due to the use of a rolling friction structure, the rotating ring 3 and the workpiece remain relatively motionless, avoiding scratches on the workpiece positioning surface. The end jump of the rotating ring 3 is less than 0.0015mm, which can fully meet the detection requirements.

[0032] The rotating ring 3 and the center ring 2 are clearance-fitted, and radial pistons 6 are circumferentially distributed on the rotating ring 3 , and the radial clearance between the rotating ring 3 and the center ring 2 is adjusted by the radial pistons 6 .

[0033] At the same time, a mounting ring 7 is fixed by screws on the upper end of the center ring 2, and the mounting ring 7 extends radially outward and exceeds the inner ring of the rotating ring; and the axial height of the mounting ring 7 is lower than the axial height of the rotating ring 3. Axial plungers 8 are distributed circumferentially on the mounting ring 7, and the axial matching clearance between the rotating ring 3 and the reference seat 1 is adjusted by the axial plungers 8.

[0034] To facilitate assembly and overall dimensions, the inner diameter of the center ring 2 is consistent with the inner diameter of the reference seat 1, the outer diameter of the center ring 2 is smaller than the outer diameter of the reference seat 1, the outer diameter of the rotating ring 3 is consistent with the outer diameter of the reference seat 1, and the inner diameter of the mounting ring 7 is consistent with the inner diameter of the center ring 2.

[0035] During operation, the top surface of the rotating ring 3 matches with the positioning surface of the workpiece, and the upper end of the rotating ring 3 is provided with a limiting mechanism that matches with the workpiece mounting hole, so that the workpiece drives the rotating ring to rotate together through the limiting mechanism.

[0036] Specifically, the limiting mechanism includes an elastic pin 9 vertically mounted on the rotating ring, and the upper end of the elastic pin 9 extends outward from the rotating ring 3. When the positioning surface of the workpiece falls on the rotating ring 3 of the turntable mechanism, the elastic pin 9 is pressed under the positioning surface and is in a compressed state; the driving mechanism rotates the workpiece, and when the workpiece mounting hole passes through the elastic pin 9, the elastic pin 9 extends and slides into the workpiece mounting hole, and then the workpiece drives the rotating ring to rotate together.

[0037] In this embodiment, the main body of the elastic pin is made of plastic to avoid scratching the workpiece.

[0038] In order to prevent dust from falling in, the utility model also performs dust-proof treatment, including:

[0039] A dustproof ring 10 is provided at the butt joint between the rotating ring 3 and the reference seat 1 . The dustproof ring 10 is installed on the rotating ring and extends downward to cover the outside of the reference seat 1 .

[0040] An annular groove is arranged on the inner ring of the rotating ring 3 , and a sealing ring 11 is arranged in the annular groove.

[0041] A groove is provided at the inner circle position of the top end of the rotating ring 3 , and a stainless steel cover plate ring 12 is installed in the groove. The stainless steel cover plate ring 12 is lower than the upper end surface of the rotating ring 3 .

[0042] The working principle of the utility model is as follows:

[0043] The workpiece is centered by the center hole, and the positioning surface falls on the rotating ring 3 of the turntable mechanism. The elastic pin 9 on the rotating ring 3 is pressed under the positioning surface and is in a compressed state. The pin of the lever driving mechanism is inserted into the workpiece mounting hole and drives the workpiece to rotate. When the mounting hole passes through the elastic pin 9, the elastic plunger extends out and slides into the workpiece hole, and then the workpiece drives the rotating ring 3 to rotate together. When the measuring machine completes the rotation detection, the workpiece rises and the rotating ring 3 is separated from the workpiece.

[0044] The utility model is suitable for a brake disc measuring machine with a center positioning cone and an alloy positioning table for combined positioning. The turntable mechanism is designed to replace the alloy positioning table for use.

[0045] The utility model can realize the detection requirement of the composite brake disc at the production site by only designing a set of special turntable mechanisms without changing any structure of the on-site equipment.

[0046] The above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

[0047] If the words "first", "second" and so on are used in this document to limit components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of describing the utility model and simplifying the description. Unless otherwise stated, the above words have no special meaning.

[0048] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0049] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A turntable mechanism for composite brake disc testing, characterized in that: It includes a reference seat, a center ring and a rotating ring. The center ring is coaxially fixed on the reference seat, and the rotating ring is rotatably sleeved on the center ring in a concentric circle relationship. A rotating mechanism is provided between the lower end surface of the rotating ring and the upper end surface of the reference seat, and the rotating connection between the rotating ring and the reference seat is realized through the rotating mechanism. The top surface of the rotating ring matches with the positioning surface of the workpiece, and the upper end of the rotating ring is provided with a limiting mechanism matching with the installation hole of the workpiece, and the workpiece drives the rotating ring to rotate together through the limiting mechanism.

2. The turntable mechanism for composite brake disc testing according to claim 1, characterized in that: The limiting mechanism comprises an elastic pin vertically mounted on the rotating ring, and the upper end of the elastic pin extends outward from the rotating ring; When the positioning surface of the workpiece falls on the rotating ring, the elastic pin is pressed under the positioning surface and is in a compressed state; The driving mechanism drives the workpiece to rotate. When the workpiece mounting hole passes through the elastic pin, the elastic pin extends out and slides into the workpiece mounting hole, and then the workpiece drives the rotating ring to rotate together.

3. The turntable mechanism for composite brake disc testing according to claim 2, characterized in that: The main body of the elastic pin is made of plastic.

4. The turntable mechanism for composite brake disc testing according to claim 1, characterized in that: The rotating mechanism comprises a retaining frame installed on the upper end surface of the reference seat, and steel ball holes are arranged circumferentially on the retaining frame. Steel balls are installed in each of the steel ball holes, and the steel balls form a rolling fit with the lower end surface of the rotating ring.

5. The turntable mechanism for composite brake disc testing according to claim 1, characterized in that: The rotating ring and the center ring are clearance-matched, and radial pistons are circumferentially distributed on the rotating ring, and the radial clearance between the rotating ring and the center ring is adjusted by the radial pistons.

6. The turntable mechanism for composite brake disc testing according to claim 1, characterized in that: A mounting ring is fixed to the upper end of the center ring. The mounting ring extends radially outward and exceeds the inner ring of the rotating ring, and the axial height of the mounting ring is lower than the axial height of the rotating ring. Axial pistons are circumferentially distributed on the mounting ring, and the axial matching clearance between the rotating ring and the reference seat is adjusted by the axial pistons.

7. The turntable mechanism for composite brake disc testing according to any one of claims 1 to 6, characterized in that: A dustproof ring is provided at the butt joint position between the rotating ring and the reference seat. The dustproof ring is installed on the rotating ring and extends downward to cover the outside of the reference seat.

8. The turntable mechanism for composite brake disc testing according to any one of claims 1 to 6, characterized in that: The inner ring of the rotating ring is provided with an annular groove, and a sealing ring is arranged in the annular groove.

9. The turntable mechanism for composite brake disc testing according to any one of claims 1 to 6, characterized in that: The rotating ring is provided with a groove at the inner circle position of the top end, and the cover plate ring is installed in the groove.

10. The turntable mechanism for composite brake disc testing according to any one of claims 1 to 6, characterized in that: The inner diameter of the center ring is consistent with the inner diameter of the reference seat, and the outer diameter of the center ring is smaller than the outer diameter of the reference seat; the outer diameter of the rotating ring is consistent with the outer diameter of the reference seat.

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