Precise testing fixture for cylinder barrel of brake piston cylinder

Abstract

The utility model discloses a brake piston cylinder barrel precision testing fixture, which comprises a base, a backup plate is arranged on the base, one end of the backup plate is provided with a profiling positioning column which horizontally extends back and forth, and the side surface of the profiling positioning column is provided with a first protruding part, a second protruding part and a third protruding part which are as high as the profiling positioning column. The first protruding part, the second protruding part and the third protruding part are the same in shape and size. Comprising a first measuring hole penetrating through the first protruding part and the backup plate, a second measuring hole penetrating through the second protruding part and the backup plate, and a third measuring hole penetrating through the profiling positioning column and the backup plate. The first digital display dial indicator, the second digital display dial indicator and the third digital display dial indicator are arranged on the backup plate. The gauge has the characteristics of multi-point measurement and accurate measurement, and is complete in overall function and high in practicability.

Description

Technical Field

[0001] The utility model relates to a checking tool, more specifically, it relates to a precision checking tool for a brake piston cylinder. Background Art

[0002] like Figure 3 and Figure 4 The figure shows a schematic diagram of the structure of a brake piston cylinder barrel for an existing new energy vehicle. At least three depth points need to be measured inside the piston cylinder barrel 100, including a first depth measurement surface 101, a second depth measurement surface 102 and a third depth measurement surface 103. If a traditional measuring tool is used, not only does it need to be adjusted multiple times, but the measurement is also inaccurate and the overall effect is not good. Accordingly, the utility model proposes a precision inspection tool for a brake piston cylinder barrel. Utility Model Content

[0003] The utility model aims to overcome the above-mentioned deficiencies in the prior art and provide a brake piston cylinder barrel precision gauge, which has the characteristics of multi-point measurement and precise measurement.

[0004] In order to solve the above technical problems, the purpose of the utility model is achieved as follows: the utility model relates to a brake piston cylinder barrel precision gauge, comprising a base, a backing plate is provided on the base, one end of the backing plate is provided with a profiling positioning column extending horizontally forward and backward, and the side of the profiling positioning column is provided with a first protrusion, a second protrusion and a third protrusion of the same height, and the first protrusion, the second protrusion and the third protrusion are all the same in shape and size;

[0005] It includes a first measuring hole penetrating the first protrusion and the backing plate, a second measuring hole penetrating the second protrusion and the backing plate, and a third measuring hole penetrating the contour positioning column and the backing plate;

[0006] It also includes a first digital dial indicator, a second digital dial indicator and a third digital dial indicator arranged on the back plate, the first digital dial indicator includes a first dial indicator body and a first measuring column, the first measuring column is slidably connected in the first measuring hole, and the first measuring column extends out of the opening of the first measuring hole; the second digital dial indicator includes a second dial indicator body and a second measuring column, the second measuring column is slidably connected in the second measuring hole, and the second measuring column extends out of the opening of the second measuring hole; the third digital dial indicator includes a third dial indicator body and a third measuring column, the third measuring column is slidably connected in the third measuring hole, and the third measuring column extends out of the opening of the third measuring hole, an auxiliary block is provided at one end of the third measuring column not connected to the third dial indicator body, and a central measuring column extending along the axial direction of the contoured positioning column is connected to the auxiliary block; the diameter of the second measuring column is larger than the diameter of the first measuring column.

[0007] The utility model is further configured as follows: the central measuring column and the contour positioning column are arranged coaxially.

[0008] The utility model is further configured as follows: the auxiliary block extends along the radial direction of the contour positioning column.

[0009] The utility model is further configured as follows: the interval angle between the first protrusion and the second protrusion is 120°; the interval angle between the second protrusion and the third protrusion is 120°; the interval angle between the third protrusion and the first protrusion is 120°.

[0010] The utility model is further configured as follows: the third measuring hole is close to the third protrusion; the interval angle between the first measuring hole and the second measuring hole is 120°; the interval angle between the second measuring hole and the third measuring hole is 120°; the interval angle between the third measuring hole and the first measuring hole is 120°.

[0011] To sum up, the utility model has the following beneficial effects: the brake piston cylinder precision gauge involved in the utility model can realize multi-point depth measurement of the workpiece by arranging multiple digital dial indicators for measuring different points on the same gauge, and switching the workpiece position through multiple turnovers, with high measurement accuracy, fast measurement speed, complete overall functions and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a front view structural schematic diagram of the utility model;

[0014] Figure 3 This is a schematic diagram of the internal structure of the piston cylinder barrel of the utility model;

[0015] Figure 4 yes Figure 3 Schematic diagram of the structure from another perspective. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the technical solution of the utility model, the preferred implementation scheme of the utility model is described below in conjunction with specific embodiments, but it should be understood that these descriptions are only for further illustrating the features and advantages of the utility model, rather than limiting the patent requirements of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0017] The utility model is further described below in conjunction with the accompanying drawings and preferred embodiments.

[0018] Example 1

[0019] See also Figures 1 to 4 As shown, a brake piston cylinder precision gauge involved in this embodiment includes a base 1, a backing plate 2 is provided on the base 1, a profiling positioning column 3 extending horizontally forward and backward is provided at one end of the backing plate 2, and a first protrusion 4, a second protrusion 5 and a third protrusion 6 of the same height are provided on the side of the profiling positioning column 3, and the first protrusion 4, the second protrusion 5 and the third protrusion 6 are all the same in shape and size;

[0020] It includes a first measuring hole 7 penetrating the first protrusion 4 and the backing plate 2, a second measuring hole 8 penetrating the second protrusion 5 and the backing plate 2, and a third measuring hole 9 penetrating the contour positioning column 3 and the backing plate 2;

[0021] The utility model also includes a first digital display dial indicator, a second digital display dial indicator and a third digital display dial indicator arranged on the back plate 2, wherein the first digital display dial indicator includes a first dial indicator body 10 and a first measuring column 11, the first measuring column 11 is slidably connected in the first measuring hole 7, and the first measuring column 11 extends out of the orifice of the first measuring hole 7; the second digital display dial indicator includes a second dial indicator body 12 and a second measuring column 13, the second measuring column 13 is slidably connected in the second measuring hole 8, and the second measuring column 13 extends out of the orifice of the second measuring hole 8; the third digital display dial indicator includes a third dial indicator body 14 and a third measuring column 15, the third measuring column 15 is slidably connected in the third measuring hole 9, and the third measuring column 15 extends out of the orifice of the third measuring hole 9, and an auxiliary block 16 is provided at one end of the third measuring column 15 not connected to the third dial indicator body 14, and a central measuring column 17 extending along the axial direction of the profiling positioning column 3 is connected to the auxiliary block 16; the diameter of the second measuring column 13 is larger than the diameter of the first measuring column 11.

[0022] Furthermore, the central measuring column 17 and the contour positioning column 3 are coaxially arranged.

[0023] Furthermore, the auxiliary block 16 extends along the radial direction of the contoured positioning column 3 .

[0024] Furthermore, the interval angle between the first protrusion 4 and the second protrusion 5 is 120°; the interval angle between the second protrusion 5 and the third protrusion 6 is 120°; and the interval angle between the third protrusion 6 and the first protrusion 4 is 120°.

[0025] Furthermore, the third measuring hole 9 is close to the third protrusion 6; the interval angle between the first measuring hole 7 and the second measuring hole 8 is 120°; the interval angle between the second measuring hole 8 and the third measuring hole 9 is 120°; the interval angle between the third measuring hole 9 and the first measuring hole 7 is 120°.

[0026] In this embodiment, the interior of the piston cylinder barrel 100 has a third depth measuring surface 103, three second depth measuring surfaces 102 arranged circumferentially, and three first depth measuring surfaces 101 arranged circumferentially. Compared with the end surface of the piston cylinder barrel 100, the distance between the third depth measuring surface 103 and the end surface of the piston cylinder barrel 100 is greater than the distance between the first depth measuring surface 101 and the end surface of the piston cylinder barrel 100, and the distance between the first depth measuring surface 101 and the end surface of the piston cylinder barrel 100 is greater than the distance between the second depth measuring surface 102 and the end surface of the piston cylinder barrel 100.

[0027] Measuring method: firstly, the piston cylinder barrel 100 is suitably mounted on the profiling positioning column 3 until the end face of the piston cylinder barrel 100 is in close contact with the back plate 2. At this time, the end of the central measuring column 17 is against the third depth measuring surface 103, the end of the first measuring column 11 is against one of the first depth measuring surfaces 101, and the end of the second measuring column 13 is against one of the second depth measuring surfaces 102, and the first measurement is completed; then, the piston cylinder barrel 100 is removed from the profiling positioning column 3, and the piston cylinder barrel 100 is rotated 120°, and the above-mentioned measuring operation is repeated to complete the second measurement; finally, the piston cylinder barrel 100 is removed from the profiling positioning column 3, and the piston cylinder barrel 100 is rotated 120°, and the above-mentioned measuring operation is repeated to complete the third measurement, so that the processing depths of a three-depth measuring surface 103 inside the piston cylinder barrel 100, the three second depth measuring surfaces 102 arranged around, and the three first depth measuring surfaces 101 arranged around can be measured.

[0028] The brake piston cylinder precision gauge involved in the utility model can realize multi-point depth measurement of the workpiece by distributing multiple digital dial indicators for measuring different points on the same gauge and switching the workpiece position through multiple turnovers. It has high measurement accuracy, fast measurement speed, complete overall functions and strong practicality.

[0029] Unless otherwise specified, in the present invention, the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicating orientation or positional relationship are based on the orientation or positional relationship actually shown, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present invention are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood in combination with the embodiments and according to specific circumstances.

[0030] Unless otherwise clearly specified and limited, in the present invention, the terms "disposed", "connected" and "connected" 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 direct connection, or an indirect connection 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.

[0031] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A precision inspection tool for a brake piston cylinder, comprising a base, characterized in that: The base is provided with a backing plate, one end of which is provided with a contour positioning column extending horizontally forward and backward, and the side of the contour positioning column is provided with a first protrusion, a second protrusion and a third protrusion of the same height, and the first protrusion, the second protrusion and the third protrusion are all the same in shape and size; It includes a first measuring hole penetrating the first protrusion and the backing plate, a second measuring hole penetrating the second protrusion and the backing plate, and a third measuring hole penetrating the contour positioning column and the backing plate; It also includes a first digital dial indicator, a second digital dial indicator and a third digital dial indicator arranged on the back plate, the first digital dial indicator includes a first dial indicator body and a first measuring column, the first measuring column is slidably connected in the first measuring hole, and the first measuring column extends out of the opening of the first measuring hole; the second digital dial indicator includes a second dial indicator body and a second measuring column, the second measuring column is slidably connected in the second measuring hole, and the second measuring column extends out of the opening of the second measuring hole; the third digital dial indicator includes a third dial indicator body and a third measuring column, the third measuring column is slidably connected in the third measuring hole, and the third measuring column extends out of the opening of the third measuring hole, an auxiliary block is provided at one end of the third measuring column not connected to the third dial indicator body, and a central measuring column extending along the axial direction of the contoured positioning column is connected to the auxiliary block; the diameter of the second measuring column is larger than the diameter of the first measuring column.

2. The brake piston cylinder precision inspection tool according to claim 1, characterized in that: The central measuring column and the contour positioning column are arranged coaxially.

3. The brake piston cylinder precision inspection tool according to claim 2, characterized in that: The auxiliary block extends along the radial direction of the contoured positioning column.

4. The brake piston cylinder precision inspection tool according to any one of claims 1 to 3, characterized in that: The interval angle between the first protrusion and the second protrusion is 120°; the interval angle between the second protrusion and the third protrusion is 120°; the interval angle between the third protrusion and the first protrusion is 120°.

5. The brake piston cylinder precision inspection tool according to claim 4, characterized in that: The third measuring hole is close to the third protrusion; the interval angle between the first measuring hole and the second measuring hole is 120°; the interval angle between the second measuring hole and the third measuring hole is 120°; the interval angle between the third measuring hole and the first measuring hole is 120°.

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