Special gauge for measuring the inner tooth span

Abstract

The utility model discloses a special gauge of inner tooth cross bar distance measurement belongs to the processing detection equipment field of inner tooth product. The special gauge includes: setting fixed area, buffer area and test area on the detection platform, setting up the micrometer in the fixed area, setting up the detection mobile unit in the buffer area, and the detection mobile unit one end is contacted with the detection rod of micrometer, and the other end of detection mobile unit sets up the mobile round bar, setting up the fixed round bar in the test area, and the fixed round bar sets up at least one, when detecting, mobile round bar and fixed round bar all are located in the gear interior. At present, the inner tooth cross bar distance size is three -coordinate measurement, and the measurement time is long, and it needs professional measuring personnel to operate three -coordinate equipment, and the operation is complex and requires high, and the equipment value is high. The special gauge of this design, through the ingenious design, can reach the measurement precision of three -coordinate, and the operation is simple, and the efficiency is high, and the volume is small, can be placed in the production and selection field workbench, and the cost is low.

Description

TECHNICAL FIELD

[0001] The utility model relates to the processing detection equipment field of internal tooth product, especially a kind of special gauge for internal tooth cross bar distance measurement. BACKGROUND

[0002] Cross bar distance refers to the distance of two cylindrical outer circles or balls, which is measured by placing a cylindrical rod or a ball in the diametrically opposed tooth grooves of the measured gear. Internal gear is a kind of gear product, and its stable transmission is a basic requirement. At the same time, internal tooth cross bar distance is a key dimension for gear transmission stability, which requires high precision and needs 100% product inspection.

[0003] However, due to the curved tooth profile of the gear, it is difficult to measure the internal tooth cross bar distance. Currently, the conventional measurement method is to use a three-coordinate to detect. The products produced by the factory have production process inspection and finished product inspection, and the operation of the three-coordinate is more complicated, which requires professional personnel to operate. Moreover, the measurement time is long, the efficiency is extremely low, and it cannot meet the production inspection needs of the company. At the same time, the three-coordinate detection equipment is expensive, and the detection cost is high. SUMMARY

[0004] To solve the above technical problems, the utility model provides a special gauge for internal tooth cross bar distance measurement.

[0005] The technical scheme of the utility model is: a special gauge for internal tooth cross bar distance measurement, comprising:

[0006] a detection table, a fixed area, a buffer area and a test area are provided on the detection table;

[0007] a micrometer is fixedly arranged in the fixed area;

[0008] a detection moving unit is arranged in the buffer area, one side of the detection moving unit is in contact with the detection rod of the micrometer, and the other side of the detection moving unit is provided with a moving cylindrical rod;

[0009] a fixed cylindrical rod is arranged in the test area, and at least one fixed cylindrical rod is arranged;

[0010] The detection moving unit comprises a detection driving element, the detection driving element is arranged on the detection table, the driving end of the detection driving element is connected with a moving seat, a moving cylindrical rod is arranged on the moving seat, and during detection, the moving cylindrical rod and the fixed cylindrical rod are located inside the gear.

[0011] Further, the detection driving element is a spring or a tension spring or a spring cord. It can also be other components with elastic retraction or automatic retraction. In further improvement, a pneumatic cylinder or an electric cylinder or other automatic elements can also be provided.

[0012] Further, the bottom of the moving seat and the detection table are provided with mutually matched sliding rails and sliding blocks, the sliding rails are coaxial or parallel with the direction of the detection rod, which ensures the accuracy and stability of measurement and avoids other errors.

[0013] Further, the working surface of the moving seat is provided with a moving round bar, the fixed surface of the test area is provided with a fixed round bar, and the working surface and the fixed surface are provided with the same height, which ensures the stability of the measurement process and avoids the deviation of data caused by the inclination of the gear.

[0014] Further, the moving seat is provided with a protrusion, and the test area is provided with a groove, and the protrusion and the groove are matched, which can ensure the stability during the test of the two.

[0015] Further, the test area is provided with an inner concave surface, and the inner concave surface is a fixed surface. The placement of the gear is facilitated, and the accuracy of measurement is improved.

[0016] Further, the fixed area is provided with a fixed support, and the fixed support is provided with a micrometer. Through the setting of the fixed support, the stable installation of the micrometer is ensured, and adjustment can be made according to the actual situation.

[0017] Further, when the number of teeth of the inner gear is even, one fixed round bar is arranged.

[0018] Further, when the number of teeth of the inner gear is odd, two fixed round bars are arranged.

[0019] The beneficial technical effects of the utility model are: the current inner tooth span bar distance size is three-coordinate measurement, the measurement time is long, professional measurement personnel is needed to operate three-coordinate equipment, the operation is complex and high requirement, the equipment value is high (more than 100 million yuan). The special gauge designed this time can achieve the measurement accuracy of three coordinates through ingenious design, the operation is simple, the efficiency is high, the volume is small, can be placed on the production and selection site workbench, the cost is low (2000 yuan). It provides reliable guarantee for large-scale detection. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the overall schematic view of the special gauge for inner tooth span bar distance measurement.

[0021] Figure 2 It is the matching schematic view of the moving seat.

[0022] Figure 3 It is the matching schematic of the moving seat and the groove.

[0023] Figure 4 It is the schematic view of the detection moving assembly.

[0024] Figure 5 It is the schematic view of calibration.

[0025] Wherein:

[0026] 1, detection platform, 11, fixed area, 12, buffer area, 13, test area,

[0027] 2, dial gauge, 21, detection rod,

[0028] 3, detection mobile unit, 31, detection drive element, 32, mobile seat,

[0029] 4, mobile round bar, 5, fixed round bar, 6, slide rail, 7, sliding block, 8, protrusion, 9, recess, 10, fixed support. DETAILED DESCRIPTION

[0030] In order to make the technical means of the utility model more clearly understood, and can be implemented according to the content of the specification, the specific embodiments of the utility model are further described in detail below, the following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

[0031] Referring to the special gauge for measuring the inner tooth span of the bar shown in the drawings, comprising: Figures 1-5 As shown in the drawings,

[0032] Detection platform 1, fixed area 11, buffer area 12 and test area 13 are arranged on the detection platform 1;

[0033] The dial gauge 2 is fixedly arranged in the fixed area 11;

[0034] The detection mobile unit 3 is arranged in the buffer area 12, one side of the detection mobile unit 3 is in contact with the detection rod 21 of the dial gauge 2, and the other side of the detection mobile unit 3 is provided with the mobile round bar 4;

[0035] The fixed round bar 5 is arranged in the test area 13, and the fixed round bar 5 is provided with at least one;

[0036] The detection mobile unit 3 comprises: detection drive element 31, the detection drive element 31 is arranged on the detection platform 1, the driving end of the detection drive element 31 is connected with the mobile seat 32, the mobile round bar 4 is arranged on the mobile seat 32, and during detection, the mobile round bar 4 and the fixed round bar 5 are located inside the gear.

[0037] Further, the detection drive element 31 is a spring or a tension spring or a spring rope. It can also be other components with elastic retraction or automatic retraction. In further improvement, a pneumatic cylinder or an electric cylinder or other automatic elements can also be arranged.

[0038] Further, the bottom of the mobile seat 32 and the detection platform 1 are provided with the slide rail 6 and the sliding block 7 matched with each other, and the slide rail 6 is coaxial or parallel with the direction of the detection rod 21. The accuracy and stability of the measurement are ensured, and other errors are avoided.

[0039] Further, the working surface of the moving seat 32 is provided with a moving round bar 4, the fixed surface of the test area 13 is provided with a fixed round bar 5, and the working surface and the fixed surface are arranged at the same height. The stability of the measurement process is ensured, and the deviation of the data caused by the gear tilt is avoided.

[0040] Further, the moving seat 32 is provided with a protrusion 8, and the test area 13 is provided with a groove 9, and the protrusion 8 and the groove 9 are matched. Through the setting of the protrusion 8 and the groove 9, the stability during the test of the two can be ensured.

[0041] Further, the test area 13 is provided with an inner concave surface, and the inner concave surface is a fixed surface. The placement of the gear is facilitated, and the measurement accuracy can be improved.

[0042] Further, the fixed support 10 is arranged in the fixed area 11, and the dial gauge 2 is arranged on the fixed support 10. Through the setting of the fixed support 10, the stable installation of the dial gauge 2 is ensured, and the adjustment can be made according to the actual situation.

[0043] Further, when the inner gear is an even tooth, one fixed round bar 5 is arranged.

[0044] Further, when the inner gear is an odd tooth, two fixed round bars 5 are arranged.

[0045] At present, the inner tooth span bar distance size is measured by three coordinate measurement, which takes a long time, requires professional measurement personnel to operate three coordinate equipment, and has complex operation and high requirements. The value of the equipment is high (more than 1 million yuan). The special gauge designed this time can achieve the measurement accuracy of three coordinates through clever design, has simple operation, high efficiency, small size, can be placed on the production and selection site workbench, and has low cost (2000 yuan). It provides reliable guarantee for large-scale detection.

[0046] The specific test method is as follows:

[0047] Suppose: The measured inner tooth is 23 teeth (odd), so three-point positioning is adopted.

[0048] First, pull back the moving seat, place the gear calibration block outside the movable round bar and the fixed round bar, loosen the hand, rely on the tension spring to make the round bar on the moving seat tangent to the inner tooth of the gear calibration block, zero the dial gauge, then pull back the moving seat, and remove the gear calibration block. At this time, the calibration work is completed.

[0049] When testing, pull back the moving seat, place the gear block to be tested outside the movable round bar and the fixed round bar, loosen the hand, the round bar is tangent to the inner tooth of the gear, and the value displayed by the dial gauge is read, which is the inner tooth span bar distance tolerance value. This way, large-scale inner tooth measurement can be realized. The operation mode is simple and reliable.

[0050] At the same time, the dial gauge is set as a digital dial gauge, data can be obtained more quickly and directly, and recording can be carried out, so as to avoid reading errors.

[0051] The preferred embodiments of the utility model are described above only, and are not used to limit the utility model, it should be pointed out that, for ordinary skilled person in the art, under the premise of not departing from the technical principle of the utility model, can make several improvements and variations, these improvements and variations also should be considered as the protection scope of the utility model.

Claims

1. A special purpose gauge for measuring the inner tooth span of a bar, characterized in that, The utility model relates to a kind of detection device for testing the hardness of round bar, including: Detection platform (1), fixed area (11), buffer area (12) and test area (13) are arranged on the detection platform (1); Fixed dial gauge (2) is fixedly arranged in fixed area (11); Detection mobile unit (3) is arranged in buffer area (12), one side of the detection mobile unit (3) is in contact with detection lever (21) of dial gauge (2), and the other side of the detection mobile unit (3) is arranged upwardly with mobile round bar (4); Fixed round bar (5) is arranged in test area (13), and the fixed round bar (5) is provided with at least one; The detection mobile unit (3) includes detection drive element (31), the detection drive element (31) is arranged on detection platform (1), the drive end of the detection drive element (31) is connected with mobile seat (32), mobile round bar (4) is arranged on the mobile seat (32), and when detecting, the mobile round bar (4) and fixed round bar (5) are all located inside gear.

2. The special purpose gage for internal tooth across-bar distance measurement according to claim 1, characterized in that: The detection drive element (31) is spring or tension spring or elastic cord.

3. The special purpose gage for internal tooth across-bar distance measurement according to claim 1, characterized in that: The bottom of the mobile seat (32) and detection platform (1) are provided with sliding rail (6) and sliding block (7) that cooperate with each other, and the direction of the sliding rail (6) is coaxial or parallel with detection lever (21).

4. The special purpose gage for internal tooth across-bar distance measurement according to claim 1, characterized in that: The working surface of the mobile seat (32) is provided with mobile round bar (4), the fixed surface of test area (13) is provided with fixed round bar (5), and the working surface and the fixed surface are arranged at the same height.

5. The special purpose gage for internal tooth across-bar distance measurement according to claim 1, characterized in that: The mobile seat (32) is provided with protruding block (8), recess (9) is arranged in the test area (13), and the protruding block (8) is arranged in cooperation with recess (9).

6. The special purpose gage for internal tooth across-bar distance measurement according to claim 1, characterized in that: The test area (13) is provided with inner concave surface, and the inner concave surface is fixed surface.

7. The special purpose gage for internal tooth across-bar distance measurement according to claim 1, characterized in that: Fixed support (10) is arranged in the fixed area (11), and dial gauge (2) is arranged on the fixed support (10).

8. The special purpose gage for internal tooth across-bar distance measurement according to claim 1, characterized in that: When the number of internal gear teeth is even, one fixed round bar (5) is arranged.

9. The special purpose gage for internal tooth across-bar distance measurement according to claim 1, characterized in that: When the number of internal gear teeth is odd, two fixed round bars (5) are arranged.

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