Gearbox screw plug size inspection tool

Abstract

The utility model discloses a gear box screw plug size inspection frock, including ladder base, the ladder base includes outer diameter measuring platform and inner diameter measuring platform, be equipped with screw plug positioning clamping ware for clamping screw plug on the outer diameter measuring platform, the upper surface fixed with common scale of inner diameter measuring platform, the common scale is equipped with synchronous sliding seat on the sliding, the common scale one side to screw plug positioning clamping ware is equipped with outer diameter fixed measuring component, the other side of common scale is equipped with inner diameter fixed measuring component. Place the same screw plug in screw plug support arc groove, push synchronous sliding seat and make inner diameter fixed measuring head and inner diameter dynamic measuring head insert screw plug inner thread simultaneously, read inner diameter numerical value on common scale, and the ladder base double platform layout integrates outer diameter measurement and inner thread measurement to the same frock, and two key size detections can be continuously completed once clamping, and the overall structure is simple.

Description

Technical Field

[0001] This utility model specifically relates to a tooling for inspecting the dimensions of gearbox plugs. Background Technology

[0002] Gearbox plugs are key functional components used to seal gearbox oil passages or oil filling holes. The machining accuracy of key dimensions such as outer diameter, length, and internal thread (or internal hexagon) directly affects the sealing reliability and assembly efficiency of the gearbox.

[0003] In traditional production sites, the inspection of the above dimensions mainly relies on measuring the outer diameter and length of each piece using vernier calipers or outside micrometers, and using smooth limit plug gauges to check the go / no-go dimensions of internal threads / internal hexagonal angles. Different inspection tools are required for the outer diameter, length, and internal threads, which affects the inspection speed and reduces work efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a tooling for inspecting the dimensions of gearbox plugs, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a gearbox plug size inspection fixture, comprising a stepped base, the stepped base including an outer diameter measuring platform and an inner diameter measuring platform, the outer diameter measuring platform being provided with a plug positioning clamp for holding the plug, the upper surface of the inner diameter measuring platform being fixed with a common scale, the common scale being slidably fitted with a synchronous slide block, the side of the common scale facing the plug positioning clamp being provided with an outer diameter measuring component, and the other side of the common scale being provided with an inner diameter measuring component.

[0006] Preferably, the outer diameter measuring component includes an outer diameter measuring head disposed on the side of the common scale facing the screw plug positioning clamp, and an outer diameter moving measuring head disposed on the same side of the synchronous slide. The outer diameter measuring head and the outer diameter moving measuring head cooperate to form a screw plug outer diameter measuring pair.

[0007] Preferably, the inner diameter measuring component includes an inner diameter measuring head disposed on the other side of the common scale, and an inner diameter moving measuring head is provided on the back side of the synchronous slide. The inner diameter measuring head and the inner diameter moving measuring head cooperate to form a screw plug inner diameter measuring pair.

[0008] Preferably, the upper surface of the inner diameter measuring platform is also provided with a screw plug support groove that matches the outer circle of the screw plug.

[0009] Preferably, the synchronous slide is provided with a threaded hole, and a limit bolt is inserted into the threaded hole. The limit bolt passes through the threaded hole and abuts against the common scale.

[0010] Preferably, the screw plug positioning clamp includes a screw plug seat disposed on the upper surface of the outer diameter measuring platform, and the upper surface of the screw plug seat is provided with a limiting groove for placing the screw plug seat.

[0011] Preferably, springs are provided on both the left and right sides of the limiting groove, and a clamping positioning plate is connected to the end of the spring away from the inner wall of the limiting groove.

[0012] The technical effects and advantages of this utility model are as follows: This gearbox plug size inspection fixture allows for the inspection of the plug's outer dimensions by placing the plug into the limiting groove of the plug seat, simultaneously touching the outer circle of the calibration part with the fixed outer diameter measuring head and the movable outer diameter measuring head, and recording the scale value at this moment. Alternatively, by placing the same plug in the plug support arc groove and pushing the synchronous slide to allow the fixed inner diameter measuring head and the movable inner diameter measuring head to simultaneously insert into the plug's inner thread, the inner diameter value on the shared scale can be read. The stepped base double-platform layout integrates outer diameter measurement and inner thread measurement into the same fixture, allowing for the continuous completion of two key dimension inspections with a single clamping. The overall structure is simple, easy to use, and improves overall work efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the screw plug support arc groove of this utility model; Figure 3 This is a schematic diagram of the structure of the outer diameter moving probe of this utility model; Figure 4 This is a schematic diagram of the screw plug positioning clamp of this utility model.

[0014] In the diagram: 1. Outer diameter measuring platform; 2. Inner diameter measuring platform; 3. Common scale; 4. Synchronous slide; 5. Outer diameter fixed measuring head; 6. Outer diameter moving measuring head; 7. Inner diameter fixed measuring head; 8. Inner diameter moving measuring head; 9. Screw plug support arc groove; 10. Limiting bolt; 11. Screw plug seat; 12. Limiting groove; 13. Spring; 14. Clamping positioning plate. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0016] refer to Figure 1 , Figure 2 and Figure 3As shown, the device includes a stepped base, which comprises an outer diameter measuring platform 1 and an inner diameter measuring platform 2. The outer diameter measuring platform 1 is equipped with a plug positioning clamp for holding the plug. A common scale 3 is fixed to the upper surface of the inner diameter measuring platform 2. A synchronous slide block 4 slides on the common scale 3. An outer diameter measuring component is located on the side of the common scale 3 facing the plug positioning clamp, and an inner diameter measuring component is located on the other side of the common scale 3. The plug is placed into the plug holder. Within the limiting groove 12 of 11, the outer diameter fixed measuring head 5 and the outer diameter moving measuring head 6 simultaneously lightly touch the outer circle of the calibration part and record the calibrated value at this time. The outer dimension of the screw plug can then be checked. Place the same screw plug in the screw plug support arc groove 9, push the synchronous slide 4 to allow the inner diameter fixed measuring head 7 and the inner diameter moving measuring head 8 to simultaneously insert into the inner thread of the screw plug, and read the inner diameter value on the common scale 3. The stepped base double platform layout integrates the outer diameter measurement and the inner thread measurement into the same tooling, and two key dimension inspections can be completed continuously in one clamping.

[0017] refer to Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the outer diameter measuring assembly includes an outer diameter measuring head 5 disposed on the side of the common scale 3 facing the plug positioning clamp, and an outer diameter moving measuring head 6 disposed on the same side of the synchronous slide 4. The outer diameter measuring head 5 and the outer diameter moving measuring head 6 cooperate to form a plug outer diameter measuring pair. The outer diameter measuring head 5 and the outer diameter moving measuring head 6 are used in pairs and the scale difference is read directly. The inner diameter measuring assembly includes an inner diameter measuring head 7 disposed on the other side of the common scale 3, and an inner diameter moving measuring head 8 disposed on the back side of the synchronous slide 4. The inner diameter measuring head 7 and the inner diameter moving measuring head 8 cooperate to form a plug inner diameter measuring pair. The inner diameter measuring head 7 and the inner diameter moving measuring head 8 also utilize the same scale. The upper surface of the inner diameter measuring platform 2 is also provided with a plug support arc groove 9 that matches the outer circle of the plug. The radius of the arc is equal to the maximum outer circle radius of the plug. When the plug is inverted, it automatically aligns, ensuring that the inner diameter measuring head is always inserted along the axis, eliminating measurement distortion caused by skew. The synchronous slide 4 is provided with a threaded hole, into which a limit bolt 10 is inserted. The limit bolt 10 passes through the threaded hole and abuts against the common scale 3. When it is necessary to record the limit size, the synchronous slide 4 can be pushed to the critical value and locked before batch inserting parts for pass / stop judgment. The screw plug positioning clamp includes a screw plug seat 11 set on the upper surface of the outer diameter measuring platform 1. The upper surface of the screw plug seat 11 has a limiting groove 12 for placing the screw plug seat 11. The limiting groove 12 is positioned around the entire circumference of the outer circle of the screw plug, with twice the contact area and more stable clamping. The size of the limiting groove 12 can be changed according to the size of the screw plug to be measured. Springs 13 are provided on both the left and right sides of the limiting groove 12. The end of the spring 13 away from the inner wall of the limiting groove 12 is connected to a clamping positioning plate 14. After the screw plug is inserted, the springs 13 on both sides clamp synchronously, automatically offsetting the gap caused by the outer diameter tolerance zone, and clamping can be completed with one hand.

[0018] In use, first place the stepped base horizontally on the workbench. Place the standard calibration ring gauge (or a known qualified plug) into the limiting groove 12 of the plug seat 11. Push the synchronous slide 4 inward so that the outer diameter fixed measuring head 5 and the outer diameter moving measuring head 6 simultaneously touch the outer circle of the calibration part. Tighten the limiting bolt 10 so that its front end abuts against the common scale 3. Record the scale value at this time as the zero position of the outer diameter. Loosen the limiting bolt 10, remove the calibration part, and the outer diameter channel is now zeroed. Invert the same calibration part so that the outer circle of the plug falls into the plug support arc groove 9. Push the synchronous slide 4 to allow the inner diameter fixed measuring head 7 and the inner diameter moving measuring head 8 to enter the bottom of the inner thread of the calibration part. Gently swing the plug to confirm that the two measuring heads are in contact with the minor diameter of the thread. Tighten the limiting bolt 10 and record the scale value as the zero position of the inner diameter. Loosen the limiting bolt 10, remove the calibration piece, and the inner diameter channel is zeroed. Place the plug to be tested vertically into the limiting groove 12. The clamping positioning plates 14 on both sides are automatically clamped under the action of the spring 13. Push the synchronous slide 4 with one hand until the outer diameter moving probe 6 lightly touches the outer circle of the plug. Read the difference between the zero position of the outer diameter and the current scale on the common scale 3, which is the actual deviation of the outer diameter of the plug. After recording the data, loosen the limiting bolt 10, remove the plug, and invert the same plug so that its outer circle is completely in contact with the plug support arc groove 9, with the screw opening facing the direction of the inner diameter probe. Push the synchronous slide 4 to allow the inner diameter fixed probe 7 and the inner diameter moving probe 8 to be inserted into the inner thread of the plug at the same time. After confirming that the inner diameter fixed probe 7 is in full contact with the minor diameter of the thread, tighten the limiting bolt 10 and read the difference between the zero position of the inner diameter and the current scale on the common scale 3 to obtain the actual deviation of the minor diameter of the inner thread.

[0019] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model.

Claims

1. A fixture for inspecting the dimensions of gearbox screw plugs, characterized in that, The system includes a stepped base, which includes an outer diameter measuring platform (1) and an inner diameter measuring platform (2). The outer diameter measuring platform (1) is provided with a screw plug positioning clamp for holding the screw plug. A common scale (3) is fixed on the upper surface of the inner diameter measuring platform (2). A synchronous slide (4) is slidably mounted on the common scale (3). An outer diameter measuring component is provided on the side of the common scale (3) facing the screw plug positioning clamp, and an inner diameter measuring component is provided on the other side of the common scale (3).

2. The gearbox plug dimension inspection fixture according to claim 1, characterized in that: The outer diameter measuring component includes an outer diameter measuring head (5) disposed on the side of the common scale (3) facing the screw plug positioning clamp, and an outer diameter moving measuring head (6) disposed on the same side of the synchronous slide (4). The outer diameter measuring head (5) and the outer diameter moving measuring head (6) cooperate to form a screw plug outer diameter measuring pair.

3. The gearbox plug dimension inspection fixture according to claim 1, characterized in that: The inner diameter measurement assembly includes an inner diameter measuring head (7) located on the other side of the common scale (3), and an inner diameter moving measuring head (8) is provided on the back side of the synchronous slide (4). The inner diameter measuring head (7) and the inner diameter moving measuring head (8) cooperate to form a screw plug inner diameter measurement pair.

4. The gearbox plug dimension inspection fixture according to claim 1, characterized in that: The upper surface of the inner diameter measuring platform (2) is also provided with a screw plug support groove (9) that matches the outer circle of the screw plug.

5. The gearbox plug dimension inspection fixture according to claim 1, characterized in that: The synchronous slide (4) is provided with a threaded hole, and a limit bolt (10) is inserted into the threaded hole. The limit bolt (10) passes through the threaded hole and abuts against the common scale (3).

6. The gearbox plug dimension inspection fixture according to claim 1, characterized in that: The screw plug positioning clamp includes a screw plug seat (11) disposed on the upper surface of the outer diameter measuring platform (1), and a limiting groove (12) for placing the screw plug seat (11) is provided inward on the upper surface of the screw plug seat (11).

7. The gearbox plug dimension inspection fixture according to claim 6, characterized in that: Springs (13) are provided on both the left and right sides of the limiting groove (12), and a clamping positioning plate (14) is connected to the end of the spring (13) away from the inner wall of the limiting groove (12).

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