Positioning detection tool for cross-rod distance of helical gear shaft

Abstract

The utility model relates to a cross-rod distance detection tool, in particular to a positioning detection tool for cross-rod distance of a helical gear shaft, and mainly solves the technical problems that an existing detection device is complicated to operate, the measurement precision cannot be guaranteed, and the existing detection device is not suitable for large-size parts. The detection tool comprises a supporting unit and a measuring unit. The supporting unit comprises a base, a supporting rod, a supporting frame and an adjusting device. The supporting rod is vertically mounted on the base; the supporting frame is of a semicircular ring structure and is installed on the supporting rod through an adjusting device. The measuring unit comprises an auxiliary assembly and a measuring piece; the auxiliary assembly comprises a measuring rod and a measuring ball, the measuring rod is installed at one end of the supporting frame, and the central axis of the measuring rod passes through the circle center of the supporting frame; the measuring ball is mounted at one end of the measuring rod facing the center of the support; the measuring piece is a micrometer caliper. The detection tool is simple in structure and easy to assemble and adjust, so that the detection precision and the detection efficiency are improved.

Description

Technical Field

[0001] The utility model relates to a tool for detecting a span of a rod, in particular to a tool for detecting a positioning span of a helical gear shaft. Background Art

[0002] Helical gear shaft parts generally have two circles of helical teeth. During the production process, the span between the two circles of helical teeth needs to be measured. The measurement results are often used to adjust the hot and cold fit tests, thereby achieving control of part accuracy. It can be seen that the accuracy of the span measurement has a greater impact on the quality of the parts.

[0003] Traditional cross-rod distance gauges are usually designed based on a screw micrometer, which measures the cross-rod distance by contacting two measuring balls with the root of the helical gear. However, this method requires the gauge to be held in hand during measurement, and the operator must maintain the horizontal state of the gauge through visual observation combined with experience. Once the gauge is slightly tilted, it will cause significant errors in the measurement results.

[0004] In order to solve the above problems, a Chinese patent with publication number CN217424222U discloses a universal external gear cross-ball distance detection device, which realizes the detection of the external gear cross-ball distance by adjusting the positions of the two sides of the micrometer on the column respectively. However, the device is cumbersome to operate when adjusting the height of the micrometer, and it is also easy to have inconsistent heights on both sides, thereby affecting the measurement accuracy. In addition, the device is suitable for measuring small parts, but not for large parts. Utility Model Content

[0005] The utility model aims to provide a positioning detection tool for the span of a helical gear shaft, which is used to solve the technical problems that the existing detection device is complicated to operate, the measurement accuracy cannot be guaranteed, and it is not applicable to parts with larger sizes.

[0006] To achieve the above purpose, the technical solution of the utility model is as follows:

[0007] A positioning detection tool for the span of a helical gear shaft, which is special in that:

[0008] It includes a supporting unit and a measuring unit;

[0009] The support unit includes a base, a support rod, a support frame and an adjustment device;

[0010] The support rod is vertically mounted on the base; the support frame is a semicircular ring structure, which is mounted on the support rod through an adjustment device; the center position of the support frame is used to place the helical gear shaft to be tested;

[0011] The measuring unit includes an auxiliary component and a measuring piece; the auxiliary component includes a measuring rod and a measuring ball, wherein the measuring rod is installed at one end of the support frame, and the central axis of the measuring rod passes through the center of the support frame; the measuring ball is installed at one end of the measuring rod facing the center of the support frame, and is used to abut against the root of the helical gear on one side of the helical gear shaft to be tested during measurement;

[0012] The measuring piece is a micrometer, which is installed at the other end of the support frame, with the measuring end facing the center of the support frame, and the line connecting the measuring end of the micrometer and the center of the measuring ball passes through the center of the support frame; the measuring end of the micrometer is used to abut the root of the helical tooth on the other side of the helical gear shaft to be tested during measurement.

[0013] Further, the adjustment device comprises an adjustment block and a locking member;

[0014] The support frame is installed on the adjustment block; the adjustment block is provided with a connected adjustment hole and a first locking hole, and the central axes of the adjustment hole and the first locking hole are perpendicular to each other; the adjustment hole is adapted to the cross-sectional structure and size of the support rod, and is used to enable the adjustment block to be sleeved on the support rod; the locking piece passes through the first locking hole and abuts against the support rod, so as to realize the installation and height adjustment of the adjustment block on the support rod.

[0015] Furthermore, the adjusting block is provided with an arc-shaped mounting hole which is matched with the cross-sectional structure and size of the supporting frame, and the supporting frame is connected with the adjusting block through the arc-shaped mounting hole.

[0016] Furthermore, the adjusting block is provided with at least one second locking hole, and the supporting frame is provided with at least one third locking hole corresponding to the second locking hole one by one, and a screw is used to pass through the second locking hole and the corresponding third locking hole in sequence to lock the supporting frame on the adjusting block.

[0017] Furthermore, it also includes an electronic display; the electronic display includes a sensor and a display screen connected to the sensor; the sensor is installed on the micrometer screw to collect information measured by the micrometer screw and display it in real time through the display screen, thereby improving the measurement efficiency.

[0018] Furthermore, the support frame is provided with a plurality of weight-reducing holes for reducing the mass of the support frame and avoiding the phenomenon of uneven height in the horizontal direction.

[0019] Furthermore, the measuring rod is threadedly connected to the measuring ball, and the measuring ball of corresponding size can be replaced as needed.

[0020] Furthermore, the locking member is a screw, and the first locking hole is a threaded hole.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] 1. The utility model provides a positioning detection tool for the span of a helical gear shaft, which has a simple structure and is easy to assemble and adjust. The support frame can be stably installed on the support rod through an adjustment device, so that the support frame remains horizontal, thereby avoiding measurement errors caused by tilt during the measurement process.

[0023] 2. The utility model provides a positioning detection tool for the span of the helical gear shaft, which can adjust the height of the support frame on the support rod through an adjustment device according to the height of the measured object, thereby improving the measurement accuracy of the detection tool.

[0024] 3. The utility model provides a positioning detection tool for the span of the helical gear shaft, and also uses an electronic display. The electronic display can realize the digital display function of the size, which not only improves the measurement accuracy, but also facilitates the operator to read and record the detection data.

[0025] 4. The helical gear shaft span positioning detection tool provided by the utility model is easy to operate, suitable for measuring the helical gear span on various long shaft parts, and has high practicality and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a stereoscopic diagram of an embodiment of a positioning detection tool for the span of a helical gear shaft according to the utility model.

[0027] Figure 2 It is a top view of an embodiment of a positioning detection tool for the span of a helical gear shaft of the utility model.

[0028] Figure 3 It is a side view of an embodiment of a positioning detection tool for the span of a helical gear shaft of the utility model.

[0029] Figure 4 It is a schematic diagram of the connection state of the adjustment block and the support frame in an embodiment of a positioning detection tooling for the span of a helical gear shaft of the utility model.

[0030] Figure 5 It is a schematic diagram of the connection state of the adjustment block and the support rod in an embodiment of a positioning detection tooling for the span of a helical gear shaft of the utility model.

[0031] The reference numerals are as follows:

[0032] 1-base, 2-support rod, 3-support frame, 31-third locking hole, 32-weight reduction hole, 4-measuring rod, 5-measuring ball, 6-screw micrometer, 7-adjusting block, 71-adjusting hole, 72-first locking hole, 73-arc mounting hole, 74-second locking hole, 8-locking piece, 9-electronic display. DETAILED DESCRIPTION

[0033] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] like Figure 1-Figure 3 As shown, this embodiment provides a positioning detection tool for the span of a helical gear shaft, including a supporting unit and a measuring unit.

[0035] The support unit includes a base 1, a support rod 2, a support frame 3 and an adjustment device. Among them, the support rod 2 is vertically installed on the base 1. The support frame 3 is a semi-circular ring structure, which is vertically inserted from the top of the support rod 2 and installed on the support rod 2 through the adjustment device. The center position of the support frame 3 is used to place the helical gear shaft to be tested.

[0036] The measuring unit includes an auxiliary component and a measuring piece; the auxiliary component includes a measuring rod 4 and a measuring ball 5, wherein the measuring rod 4 is mounted on one end of the support frame 3, and the central axis of the measuring rod 4 passes through the center of the support frame 3; the measuring ball 5 is mounted on the end of the measuring rod 4 facing the center of the support frame 3, and is used to abut against the root of the helical gear on one side of the helical gear shaft to be tested during measurement. The measuring rod 4 and the measuring ball 5 can be connected by threads to facilitate the replacement of measuring balls of different sizes, thereby improving the application range of the detection tooling.

[0037] In this embodiment, the measuring part is a micrometer screw 6, which is installed at the other end of the support frame 3, and the measuring end faces the center of the support frame 3. The line connecting the measuring end of the micrometer screw 6 and the center of the measuring ball 5 passes through the center of the support frame 3. In the actual measurement process, the corresponding measuring instrument can also be selected according to the measurement requirements.

[0038] In order to realize the installation and height adjustment of the support frame 3 on the support rod 2, the adjustment device of this embodiment includes an adjustment block 7 and a locking member 8, such as Figure 4 As shown, the adjusting block 7 is provided with a connected adjusting hole 71 and a first locking hole 72, and the central axes of the adjusting hole 71 and the first locking hole 72 are perpendicular to each other. The adjusting hole 71 is adapted to the cross-sectional structure and size of the support rod 2, so as to enable the adjusting block 7 to be sleeved on the support rod 2.

[0039] The adjusting block 7 is provided with an arc-shaped mounting hole 73 which matches the structure and cross-sectional size of the supporting frame 3, and the supporting frame 3 is connected to the adjusting block 7 through the arc-shaped mounting hole 73. In this embodiment, the arc-shaped mounting hole 73 is communicated with the adjusting hole 71.

[0040] like Figure 5 As shown, in order to improve the stability of the installation of the support frame 3, at least one second locking hole 74 is provided on the adjusting block 7, and at least one third locking hole 31 corresponding to the second locking hole 74 is provided at a corresponding position on the support frame 3. Screws are used to pass through the second locking hole 74 and the corresponding third locking hole 31 in sequence to lock the support frame 3 on the adjusting block 7.

[0041] During actual installation, the support frame 3 is first installed and locked on the adjustment block 7, and then the adjustment block 7 with the support frame 3 installed is inserted from the top of the support rod 2, so that the support rod 2 enters the adjustment hole 71, until the adjustment block 7 with the support frame 3 installed is moved to a suitable height on the support rod 2, and then the locking member 8 passes through the first locking hole 72 and abuts against the support rod 2. At this time, the support rod 2 and the support frame 3 also abut against each other, thereby achieving the fixation of the support frame 3 on the support rod 2. When it is necessary to adjust the height of the support frame 3, it is only necessary to loosen the locking member 8, move the support frame 3 together with the adjustment block 7 to the corresponding position and lock it, so as to achieve height adjustment.

[0042] In this embodiment, the locking member 8 can be a screw, and the first locking hole 72 is a threaded hole. Through the cooperation between the screw and the threaded hole, the support frame 3 is locked on the support rod 2, thereby improving the stability of the measurement process and the measurement accuracy.

[0043] In order to reduce the weight of the support frame 3 and avoid the situation where the support frame 3 has different heights in the horizontal direction after being installed on the support rod 2, a plurality of weight-reducing holes 32 are further provided on the support frame 3 in this embodiment.

[0044] In order to improve the detection efficiency, the present embodiment is also equipped with an electronic display 9, which includes a sensor and a display screen connected to the sensor, wherein the sensor is installed on the micrometer screw 6 to collect information measured by the micrometer screw 6 and display it in real time through the display screen to realize the digital display function of the size.

[0045] Combination Figures 1 to 5 The method of using a positioning detection tool for the helical gear shaft span of this embodiment is as follows:

[0046] (1) First, assemble the inspection tooling, and then place the inspection tooling on a platform without an inclined surface. Next, place the helical gear shaft to be inspected in the middle position of the support frame 3, that is, between the measuring ball 5 and the measuring end of the micrometer screw 6.

[0047] (2) The height of the support frame 3 on the support rod 2 is adjusted by moving the adjustment block 7 so that the height of the support frame 3 can meet the measurement of the span of the helical gear shaft to be tested; then the adjustment block 7 is fastened to the support rod 2 by the locking piece 8 so that the support frame 3 remains horizontal and stable.

[0048] (3) The measuring ball 5 is placed against the root of the helical gear on one side of the helical gear shaft to be tested, and then the measuring end of the rotating micrometer 6 is made to continuously approach the root of the helical gear at the corresponding position on the other side, and finally make it in close contact.

[0049] (4) After the data is stable, read the value on the electronic display 9, thereby completing the accurate measurement of the span of the helical gear shaft.

[0050] In summary, this embodiment provides a high-precision adjustable electronic digital display span-rod distance gauge, which always maintains a horizontal state during detection, avoiding measurement errors. At the same time, the device has a height adjustment device in the vertical direction, which can adjust the height at will to ensure that the span-rod distance at different positions of the tooth root can be measured. In addition, this embodiment also introduces electronic components to realize digital display of dimensions, thereby ensuring the accuracy and efficiency of span-rod distance measurement.

[0051] The detection tooling of this embodiment has a simple structure and is easy to operate. It is suitable for measuring the span of helical teeth on various long-axis parts and has high practicality and promotion value.

[0052] Based on the above embodiments, ordinary technicians are sufficient to implement the content of the utility model. Within the framework of the claims, any improvement based on the idea of ​​the utility model is deemed to fall within the protection scope of the utility model.

Claims

1. A positioning and detection tool for the span of a helical gear shaft, characterized in that: It includes a supporting unit and a measuring unit; The support unit comprises a base (1), a support rod (2), a support frame (3) and an adjustment device; The support rod (2) is vertically mounted on the base (1); the support frame (3) is a semicircular ring structure, which is mounted on the support rod (2) through an adjustment device; the center position of the support frame (3) is used to place the helical gear shaft to be tested; The measuring unit comprises an auxiliary component and a measuring piece; the auxiliary component comprises a measuring rod (4) and a measuring ball (5), wherein the measuring rod (4) is mounted on one end of the support frame (3), and the central axis of the measuring rod (4) passes through the center of the support frame (3); the measuring ball (5) is mounted on one end of the measuring rod (4) facing the center of the support frame (3), and is used to abut against the root of the helical gear on one side of the helical gear shaft to be tested during measurement; The measuring piece is a micrometer screw (6), which is mounted on the other end of the support frame (3), with the measuring end facing the center of the support frame (3), and the line connecting the measuring end of the micrometer screw (6) and the center of the measuring ball (5) passes through the center of the support frame (3); the measuring end of the micrometer screw (6) is used to abut against the root of the helical gear on the other side of the helical gear shaft to be tested during measurement.

2. According to claim 1, the positioning detection tool for the helical gear shaft span rod pitch is characterized in that: The adjusting device comprises an adjusting block (7) and a locking member (8); The support frame (3) is mounted on the adjustment block (7); the adjustment block (7) is provided with an adjustment hole (71) and a first locking hole (72) which are connected to each other, and the central axes of the adjustment hole (71) and the first locking hole (72) are perpendicular to each other; the adjustment hole (71) is adapted to the cross-sectional structure and size of the support rod (2) and is used to enable the adjustment block (7) to be sleeved on the support rod (2); the locking member (8) passes through the first locking hole (72) and then abuts against the support rod (2) to realize the installation and height adjustment of the adjustment block (7) on the support rod (2).

3. According to claim 2, the positioning detection tool for the helical gear shaft span rod pitch is characterized in that: The adjusting block (7) is provided with an arc-shaped mounting hole (73) that matches the cross-sectional structure and size of the supporting frame (3), and the supporting frame (3) passes through the arc-shaped mounting hole (73) to be connected to the adjusting block (7).

4. The positioning detection tool for the helical gear shaft span according to claim 3 is characterized in that: The adjusting block (7) is provided with at least one second locking hole (74), and the supporting frame (3) is provided with at least one third locking hole (31) corresponding to the second locking hole (74) in a one-to-one manner. The supporting frame (3) is locked to the adjusting block (7) by sequentially passing a screw through the second locking hole (74) and the corresponding third locking hole (31).

5. The positioning detection tool for the helical gear shaft span according to any one of claims 1 to 4, characterized in that: Also includes an electronic display (9); The electronic display (9) comprises a sensor and a display screen connected to the sensor; the sensor is mounted on the micrometer screw (6) and is used to collect information measured by the micrometer screw (6) and display it in real time on the display screen.

6. The positioning detection tool for the helical gear shaft span of claim 5, characterized in that: The support frame (3) is provided with a plurality of weight-reducing holes (32).

7. The positioning detection tool for the helical gear shaft span of claim 6, characterized in that: The measuring rod (4) is threadedly connected to the measuring ball (5).

8. The positioning detection tool for the helical gear shaft span of claim 2, characterized in that: The locking member (8) is a screw rod, and the first locking hole (72) is a threaded hole.

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