Device for measuring axial dimension of long shaft

Abstract

The utility model discloses a long shaft axial dimension measuring device which comprises a digital display height gauge and further comprises a locking block, a first mounting hole is transversely formed in the locking block in a penetrating mode, a connecting rod and an L-shaped support are arranged in the first mounting hole in a penetrating mode, the L-shaped support comprises a horizontal portion and a vertical portion which are connected, and the lower end face of the horizontal portion abuts against the upper end face of the connecting rod. The vertical part is connected with a digital display meter of the digital display height gauge; the front end of the connecting rod is provided with a connecting assembly which is detachably provided with a dial indicator. The connecting assembly comprises a first fixing block and a second fixing block arranged above the first fixing block, the connecting rod is detachably connected with the first fixing block, and a clamping handle of the dial indicator is arranged in the second fixing block in a penetrating mode. Through the structural design, the dial indicator can be driven by the digital display meter to move in the vertical direction, horizontal movement of the dial indicator can also be achieved through adjustment of the clamping position of the clamping handle, the measuring device finally adapts to measurement of parts of different sizes, and the measuring range is large.

Description

Technical Field

[0001] This utility model relates to machining inspection tools, specifically to a device for measuring the axial dimension of a long shaft. Background Technology

[0002] In the machining industry, digital L-shaped supports are commonly used to measure the axial dimensions of long shafts. This method can cover most dimensions. However, when verifying the machine tool's workability index, it is necessary to perform CMK calculations on important characteristic dimensions such as bearing mounting distance and circlip axial positioning within ±0.05 tolerance. Currently used L-shaped supports have a measurement accuracy of ±0.04 and a graduation value of 0.01. Furthermore, manual marking is required during use, introducing a human error of over 0.02, making L-shaped support measurements unsuitable for calculation requirements. Ultimately, this leads to the machine tool's workability index failing to meet usage requirements. Therefore, most companies abandon L-shaped supports during equipment acceptance and instead use two-dimensional height gauges to measure the axial dimensions of long shafts, achieving an accuracy of 0.0001. However, height gauges are precision instruments, and some existing workshop environments cannot meet the basic requirements for long-term use of precision instruments. Therefore, it is necessary to develop a long shaft axial dimension measuring device that can meet the accuracy requirements. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a long shaft axial dimension measuring device to solve the technical problems of existing workshop long shaft axial dimension measuring tools being difficult to meet accuracy requirements and inconvenient to use.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A long-axis axial dimension measuring device includes a digital height gauge and a locking block. The locking block has a first mounting hole extending laterally through it. A connecting rod and an L-shaped bracket pass through the first mounting hole. The L-shaped bracket includes a horizontal part and a vertical part connected together. The lower end face of the horizontal part abuts against the upper end face of the connecting rod. The vertical part is connected to the digital display of the digital height gauge. A connecting assembly is provided at the front end of the connecting rod, and a dial indicator is detachably mounted on the connecting assembly.

[0006] This utility model also has the following technical features:

[0007] Specifically, the locking block also has a second mounting hole along the vertical direction, which is connected to the first mounting hole, and a first locking screw passes through the second mounting hole.

[0008] Furthermore, the connecting assembly includes a first fixing block and a second fixing block disposed above the first fixing block, the connecting rod is detachably connected to the first fixing block, and the micrometer's clamping handle passes through the second fixing block.

[0009] Furthermore, both the first fixing block and the second fixing block are U-shaped, and the first fixing block and the second fixing block are fixed by means of the second locking screw.

[0010] Furthermore, the first fixing block is also connected to the connecting rod by a third locking screw.

[0011] Furthermore, a gasket is provided between the first fixing block and the second fixing block.

[0012] Furthermore, the digital height gauge includes a base, a column vertically mounted on the base, and the digital display is movably mounted on the column.

[0013] Compared with the prior art, the present invention has the following technical advantages:

[0014] (1) Through structural design, especially the setting of connecting rod and connecting components, the dial indicator can move vertically under the drive of the digital display, and can also move horizontally by adjusting the clamping position of the clamping handle. Ultimately, it can adapt to the measurement of parts of different sizes and has a large measurement range.

[0015] (2) In this utility model, by means of the connecting rod and connecting components, the deflection position of the dial indicator needle can be fixed when the dial indicator probe contacts the workpiece. The fixed deflection of the dial indicator replaces manual adjustment, completely eliminating the error problem caused by manual adjustment. The measurement accuracy is significantly improved, and the stability of the workpiece processing quality is guaranteed.

[0016] (3) This utility model has a simple structure, is easy to use, has low requirements for the use environment, and has low manufacturing cost, and is worth promoting. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a partial structural schematic diagram of the present invention.

[0019] The labels in the diagram represent:

[0020] 1-Locking block, 2-Connecting rod, 3-L-shaped bracket, 4-Connecting assembly, 5-Dial indicator, 6-Second locking screw, 7-Third locking screw, 8-First locking screw, 9-Digital height gauge; 41-First fixing block, 42-Second fixing block; 51-Clamping handle; 91-Digital indicator, 92-Base, 93-Column. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, all components in this utility model are components known in the prior art.

[0022] The terms “upper,” “lower,” “front,” and “rear” used in this utility model are for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. “Inner” and “outer” refer to the inner and outer contours of the corresponding components, and the above terms should not be construed as limitations on this utility model.

[0023] In this invention, unless otherwise stated, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0024] The present invention will be further described in detail below with reference to the embodiments.

[0025] Example 1

[0026] Following the above technical solution, such as Figures 1 to 2 As shown, this embodiment provides a long shaft axial dimension measuring device, including a digital height gauge 9 and a locking block 1. The locking block 1 has a first mounting hole that runs horizontally through it. A connecting rod 2 and an L-shaped bracket 3 pass through the first mounting hole. The L-shaped bracket 3 includes a horizontal part and a vertical part that are connected together. The lower end face of the horizontal part abuts against the upper end face of the connecting rod 2. The vertical part is connected to the digital display 91 of the digital height gauge 9. A connecting component 4 is provided at the front end of the connecting rod 2. A dial indicator 5 is detachably installed on the connecting component 4. When the digital display 91 moves up and down, it can drive the L-shaped bracket 3, thereby driving the dial indicator 5 to move up and down, so as to realize the vertical position adjustment of the dial indicator 5.

[0027] In a preferred embodiment, the locking block 1 also has a second mounting hole vertically connected to the first mounting hole. A first locking screw 8 passes through the second mounting hole. Tightening the first locking screw 8 limits the movement of the connecting rod 2 and the L-shaped bracket 3 passing through the first mounting hole. Loosening the first locking screw 8 allows the connecting rod 2 and the L-shaped bracket 3 to be removed from the first mounting hole.

[0028] As a preferred embodiment, the connecting component 4 includes a first fixing block 41 and a second fixing block 42 disposed above the first fixing block 41. The connecting rod 2 is detachably connected to the first fixing block 41, and the clamping handle 51 of the dial indicator 5 passes through the second fixing block 42.

[0029] As a preferred embodiment, both the first fixing block 41 and the second fixing block 42 are U-shaped, and the first fixing block 41 and the second fixing block 42 are fixed by means of the second locking screw 6.

[0030] As a preferred embodiment, the first fixing block 41 is also connected to the connecting rod 2 by a third locking screw 7.

[0031] As a preferred embodiment, a gasket is provided between the first fixing block 41 and the second fixing block 42.

[0032] As a preferred embodiment, the digital height gauge 9 includes a base 92, a column 93 vertically mounted on the base 92, and a digital display 91 movably mounted on the column 93.

[0033] The usage process of this utility model is as follows:

[0034] Insert the connecting rod 2 and the L-shaped bracket into the first mounting hole, and then tighten the first locking screw 8 to ensure that the connecting rod 2 and the L-shaped bracket are stable and do not wobble, and that the connecting rod 2 can move up and down with the L-shaped bracket 3; use the third locking screw 7 to fix the first fixing block 41 and the connecting rod 2 together; connect the first fixing block 41, the washer and the second fixing block 42 together with the second locking screw; insert the clamping handle 51 of the dial indicator 5 into the second fixing block 42 and fix it to ensure that the needle of the dial indicator 5 does not wobble and the measurement is stable.

[0035] When measuring a workpiece, the probe of dial indicator 5 contacts the workpiece to be measured, and the pointer of dial indicator 5 is fixed at the 0 point position on the dial. The digital height gauge 9 is calibrated to 0, and this position is used as the starting position. The position of digital display indicator 91 on column 93 is adjusted to adjust the measuring height of digital height gauge 9. The probe of dial indicator 5 is moved to the height to be measured, and the pointer is pressed back to the 0 point position on the dial. This position is used as the final measurement position. The displayed value of digital height gauge 9 is read, and this value is the measured height.

[0036] In summary, this invention, through its structural design, particularly the inclusion of a connecting rod and connecting components, enables the dial indicator to move vertically under the guidance of the digital display, and also allows for horizontal movement by adjusting the clamping position of the clamping handle. Ultimately, this allows for the measurement of parts of varying sizes, with a wide measurement range. This invention eliminates the errors caused by manual adjustment, significantly improving measurement accuracy and ensuring the stability of workpiece processing quality.

[0037] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for measuring the axial dimension of a long shaft, comprising a digital height gauge (9), characterized in that, It also includes a locking block (1), which has a first mounting hole extending horizontally through it. A connecting rod (2) and an L-shaped bracket (3) are inserted through the first mounting hole. The L-shaped bracket (3) includes a horizontal part and a vertical part connected together. The lower end face of the horizontal part abuts against the upper end face of the connecting rod (2). The vertical part is connected to the digital display (91) of the digital height gauge (9). A connecting component (4) is provided at the front end of the connecting rod (2). A dial indicator (5) is detachably installed on the connecting component (4).

2. The long shaft axial dimension measuring device as described in claim 1, characterized in that, The locking block (1) is also provided with a second mounting hole along the vertical direction. The second mounting hole is connected to the first mounting hole, and a first locking screw (8) passes through the second mounting hole.

3. The long shaft axial dimension measuring device as described in claim 1, characterized in that, The connecting assembly (4) includes a first fixing block (41) and a second fixing block (42) disposed above the first fixing block (41). The connecting rod (2) is detachably connected to the first fixing block (41), and the clamping handle (51) of the dial indicator (5) passes through the second fixing block (42).

4. The long shaft axial dimension measuring device as described in claim 3, characterized in that, The first fixing block (41) and the second fixing block (42) are both U-shaped, and the first fixing block (41) and the second fixing block (42) are fixed by means of the second locking screw (6).

5. The long shaft axial dimension measuring device as described in claim 3, characterized in that, The first fixing block (41) is connected to the connecting rod (2) by the third locking screw (7).

6. The long shaft axial dimension measuring device as described in claim 3, characterized in that, A gasket is provided between the first fixing block (41) and the second fixing block (42).

7. The long shaft axial dimension measuring device as described in claim 1, characterized in that, The digital height gauge (9) includes a base (92), a column (93) vertically mounted on the base (92), and a digital display (91) movably mounted on the column (93).

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