Shaft deep hole coaxiality detection tool

Abstract

The utility model provides a shaft deep hole coaxiality detection gauge, which comprises a base, V-shaped frames, a flat plate, an outer caliper gauge support and an outer caliper gauge with a dial, the flat plate is installed on one side of the top of the base, a plurality of V-shaped frames are installed above the flat plate, a workpiece to be detected is placed on the top of the flat plate, and the outer caliper gauge support is installed on the other side of the top of the base. One side of the outer caliper gauge support is provided with an outer caliper gauge with a meter, and a measuring rod of the outer caliper gauge with the meter goes deep into an inner hole of a detected workpiece. The utility model has the beneficial effects of deep on-site processing, rapid on-site detection, avoidance of waste cutting, cost reduction, time saving and elimination of quality risk.

Description

Technical Field

[0001] The utility model belongs to the field of coaxiality detection of hollow shaft products, and particularly relates to a detection tool for coaxiality detection of deep holes of shaft-like parts. Background Art

[0002] With the continuous improvement of the penetration rate of new energy vehicles, obvious changes have taken place in the automotive market: the utilization rate of green energy has been greatly improved; energy conservation, emission reduction, and reduction of fuel consumption, and green travel have become the main development directions of today's society. The current lightweight design has become an important highlight in the development of current automobiles, making the hollow shaft in the field of lightweight a highlight now.

[0003] For the processing and detection of hollow shaft products, it is necessary to measure the internal runout of deep holes to ensure the stability of the dynamic balance of the hollow shaft. The existing measurement technology cannot achieve accurate measurement, and only a V-shaped bracket and a dial indicator can be used for detection. The deepest measurement depth is about 40 mm. For deep holes that need to be processed about 200 mm, on-site detection is impossible. The specific disadvantages of the existing technology are as follows:

[0004] The depth of the hole processed on-site is about 100 mm, and it is impossible to detect the internal runout of the relative outer diameter runout or coaxiality of the inner hole;

[0005] For the on-site detection method, a coordinate measuring machine is used but there is no suitable extended probe. The most accurate effect can only be achieved by cutting the workpiece. Once the quality is unstable, the workpiece needs to be cut repeatedly, and the cutting efficiency is slow. One waste product will be produced for each detection. It wastes costs, has low measurement efficiency, and has a very high quality risk. Content of the Utility Model

[0006] In view of this, the utility model aims to propose a detection tool for coaxiality detection of deep holes of shaft-like parts to solve at least one problem existing in the prior art.

[0007] To achieve the above object, the technical solution of the utility model is realized as follows:

[0008] A detection tool for coaxiality detection of deep holes of shaft-like parts includes a base, a V-shaped frame, a flat plate, an external caliper support, and a dial external caliper. One side of the top of the base is installed with a flat plate, several V-shaped frames are installed above the flat plate, a workpiece to be detected is placed on the top of the flat plate, the other side of the top of the base is installed with an external caliper support, a dial external caliper is installed on one side of the external caliper support, and the measuring rod of the dial external caliper extends into the inner hole of the workpiece to be detected.

[0009] Further, the base includes a base body and two slide rail assemblies. Two slide rail assemblies are symmetrically installed at one end of the top of the base body, and the tops of the two slide rail assemblies are both installed at the bottom of the external caliper support;

[0010] The slide rail assembly includes a slider, two slide rails, and two limit blocks. The two slide rails are arranged in parallel above one side of the base body. The slider is installed above the two slide rails, and the slider is installed at the bottom of the external caliper bracket. One limit block is installed at each end of the two slide rails.

[0011] Furthermore, the number of the V-shaped frames is not less than two.

[0012] Furthermore, the number of the V-shaped frames is two.

[0013] Furthermore, the structural dimensions of the two V-shaped frames are the same.

[0014] Furthermore, the flat plate is of a cuboid structure.

[0015] Furthermore, the structural dimensions of the two V-shaped frames are different.

[0016] Furthermore, the flat plate is of a stepped structure.

[0017] Furthermore, the external caliper bracket is of a stepped structure. A number of mating holes are provided on one side of the surface of the external caliper bracket, and the mating holes are used in cooperation with the dial external caliper.

[0018] Compared with the prior art, the shaft deep hole coaxiality detection tool of the present invention has the following advantages:

[0019] The shaft deep hole coaxiality detection tool of the present invention goes deep into the on-site processing, realizes rapid on-site detection, avoids cutting waste products, reduces costs, saves time, and eliminates quality risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0021] Figure 1 is the schematic diagram of the overall structure according to the embodiment of the present invention;

[0022] Figure 2 is the schematic diagram of the flat plate according to the embodiment of the present invention;

[0023] Figure 3 is the schematic diagram of the external caliper bracket according to the embodiment of the present invention;

[0024] Figure 4 is the schematic diagram of the base according to the embodiment of the present invention;

[0025] Description of the reference numerals:

[0026] 1. Base; 11. Base body; 12. Slide rail; 13. Slide block; 14. Limit block; 2. V-shaped frame; 3. Flat plate; 4. Outer caliper bracket; 41. Matching hole; 5. Dial outside caliper; 6. Workpiece to be detected. Detailed implementation manners

[0027] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments may be combined with each other.

[0028] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0029] In the description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.

[0030] The present utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0031] As Figures 1 to 4 shown, a coaxiality detection fixture for deep holes of shafts includes a base 1, a V-shaped frame 2, a flat plate 3, an outer caliper bracket 4, and a dial outside caliper 5. A flat plate 3 is installed on one side of the top of the base 1, several V-shaped frames 2 are installed above the flat plate 3, a workpiece 6 to be detected is placed on the top of the flat plate 3, an outer caliper bracket 4 is installed on the other side of the top of the base 1, a dial outside caliper 5 is installed on one side of the outer caliper bracket 4, and the measuring rod of the dial outside caliper 5 extends into the inner hole of the workpiece 6 to be detected.

[0032] This inspection fixture is processed on-site, enabling rapid on-site inspection, avoiding cutting waste products, reducing costs, saving time, and eliminating quality risks.

[0033] In a preferred embodiment of the present utility model, the base 1 includes a base body 11 and two slide rail assemblies. Two slide rail assemblies are symmetrically installed at one end of the top of the base body 11, and the tops of the two slide rail assemblies are both installed at the bottom of the outer caliper bracket 4.

[0034] The slide rail assembly includes a slider 13, two slide rails 12, and two limit blocks 14. The two slide rails 12 are arranged in parallel above one side of the base body 11. The slider 13 is installed above the two slide rails 12, and the top of the slider 13 is installed at the bottom of the outer caliper bracket 4. One limit block 14 is installed at each end of the two slide rails 12. In this embodiment, the purpose of setting the slide rail assembly is to facilitate the movement of the outer caliper bracket 4, so that the outer caliper bracket 4 can move with the dial caliper 5 to facilitate the inspection of the workpiece 6 to be inspected.

[0035] In a preferred embodiment of the present utility model, the number of the V-shaped frames 2 is not less than two. The V-shaped frame 2 can be a V-shaped iron, and the number of the V-shaped frames 2 can be determined according to the actual workpiece 6 to be inspected. When the number of the V-shaped frames 2 is two, the two V-shaped frames 2 can be placed at both ends of the workpiece 6 to be inspected.

[0036] In a preferred embodiment of the present utility model, the structural dimensions of the two V-shaped frames 2 are the same. The flat plate 3 has a cuboid structure. In this embodiment, when the flat plate 3 has a cuboid structure and the structural dimensions of the two V-shaped frames 2 are the same, the workpiece 6 to be inspected can be placed in a horizontal state.

[0037] In a preferred embodiment of the present utility model, the structural dimensions of the two V-shaped frames 2 are different. The flat plate 3 has a stepped structure. The bottom flat plate 3 of this inspection fixture is designed with a stepped structure to avoid using two V-shaped frames 2 with different structural dimensions to adjust the height.

[0038] In a preferred embodiment of the present utility model, the outer caliper bracket 4 has a stepped structure. A number of mating holes 41 are provided on one side of the surface of the outer caliper bracket 4, and the mating holes 41 are used in cooperation with the dial caliper 5. The outer caliper bracket 4 of this inspection fixture can avoid being held by the inspector during use, and at the same time, the height of the dial caliper 5 can be adjusted by changing the position of the mating holes. The outer caliper bracket 4 is set to have a stepped structure for the purpose of fitting the outer shape structure of the dial caliper 5.

[0039] The working principle of a coaxiality inspection fixture for deep holes of shafts:

[0040] Place the workpiece on the V-shaped frame, requiring it to be horizontal and vertical.

[0041] Use a deep-hole inspection tool, and insert the measuring rod into the inner hole of the workpiece to contact the inner hole of the workpiece.

[0042] Manually rotate the workpiece and observe the swing change of the dial indicator needle on the dial outside caliper 5.

[0043] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A shaft deep hole coaxiality detection tool, characterized in that: It includes a base (1), a V-shaped frame (2), a flat plate (3), an outside caliper bracket (4) and a dial outside caliper (5). A flat plate (3) is installed on one side of the top of the base (1). Several V-shaped frames (2) are installed above the flat plate (3). A workpiece to be detected (6) is placed on the top of the flat plate (3). An outside caliper bracket (4) is installed on the other side of the top of the base (1). A dial outside caliper (5) is installed on one side of the outside caliper bracket (4). The measuring rod of the dial outside caliper (5) extends into the inner hole of the workpiece to be detected (6).

2. The coaxiality detection tool for deep holes of shafts according to claim 1, wherein: The base (1) includes a base body (11) and two slide rail assemblies. Two slide rail assemblies are symmetrically installed at one end of the top of the base body (11). The tops of the two slide rail assemblies are both installed at the bottom of the outside caliper bracket (4). The slide rail assembly includes a slider (13), two slide rails (12) and two limit blocks (14). The two slide rails (12) are arranged in parallel above one side of the base body (11). The slider (13) is installed above the two slide rails (12). The top of the slider (13) is installed at the bottom of the outside caliper bracket (4). One limit block (14) is installed at each end of the two slide rails (12).

3. The coaxiality detection tool for deep holes of shafts according to claim 1, characterized in that: The number of the V-shaped frames (2) is not less than two.

4. The shaft deep hole coaxiality detection fixture according to claim 1, wherein: The number of the V-shaped frames (2) is two.

5. A shaft deep hole coaxiality detection fixture according to claim 4, characterized in that: The structural dimensions of the two V-shaped frames (2) are the same.

6. The coaxiality detection tool for deep holes of shafts according to claim 5, characterized in that: The flat plate (3) is of a cuboid structure.

7. The coaxiality detection tool for deep holes of shafts according to claim 4, characterized in that: The structural dimensions of the two V-shaped frames (2) are different.

8. The shaft deep hole coaxiality detection tool according to claim 7, characterized in that: The flat plate (3) is of a stepped structure.

9. The coaxiality detection fixture for deep holes of shafts according to claim 1, characterized in that: The outside caliper bracket (4) is of a stepped structure. Several mating holes (41) are formed on one side of the surface of the outside caliper bracket (4). The mating holes (41) are used in cooperation with the dial outside caliper (5).

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