A device for the detection of gear dimensions

Abstract

This utility model discloses a device for detecting gear dimensions, including a base comprising upper and lower layers. The upper layer of the base has an outer sliding groove, on which a movable seat is slidably mounted, and the movable seat has a moving wall. A fixed wall is provided at the other end of the base opposite the movable seat. The lower layer of the base has a lower sliding rail, on which a sliding seat is slidably mounted, and a positioning rod is provided on the sliding seat. The upper layer of the base has an extension rail located between the outer sliding grooves, and the positioning rod extends upward through the extension rail. A central through block is provided at the end of the positioning rod, and the gear is fitted onto the central through block. This utility model has the following advantages and effects: the adjustment structure of the positioning rod enables alignment of the center points of gears of different sizes, achieving rapid positioning and efficient adjustment, simplifying the gear center positioning process, and significantly improving detection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of gear tooling technology, and in particular to a device for detecting gear dimensions. Background Technology

[0002] In the gear manufacturing and assembly process, rapid and accurate dimensional inspection is crucial.

[0003] Currently, for applications requiring the detection of the overall dimensions of gears, existing technologies often employ a finished gear dimension detection device, such as the one with announcement number CN219714203U.

[0004] Because different gears have different inner diameters, the existing devices described above cannot be adapted to gears with various inner diameters. For example, their positioning screws cannot be aligned with the center point of the gear, making it impossible to measure the inner and outer diameters of different gears.

[0005] To solve the above problems, there is an urgent need for a simple, easy-to-operate, and reliable detection device to meet the high-efficiency detection needs of gears of different sizes. Utility Model Content

[0006] The purpose of this invention is to provide a device for detecting gear dimensions.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a device for detecting gear dimensions, comprising a base, the base comprising upper and lower layers; the upper layer of the base is provided with an outer sliding groove, a movable seat is slidably disposed on the outer sliding groove, and a moving wall is provided on the movable seat; a fixed wall is provided on the other end of the base opposite to the movable seat; the lower layer of the base is provided with a lower sliding rail, a sliding seat is slidably disposed on the lower sliding rail, a positioning rod is provided on the sliding seat, the upper layer of the base is provided with an extension rail located between the outer sliding grooves, the positioning rod extends upward through the extension rail, a central through block is provided at the end of the positioning rod, and a gear is sleeved on the central through block.

[0008] The central through block is further configured such that: a through portion is located above, a fixing portion is integrally provided below the through portion, and a smooth transition portion is provided between the through portion and the fixing portion.

[0009] Further configuration: a circular groove is provided at the bottom of the central through block, and an upward-facing through-hole is provided at the bottom of the circular groove; a rectangular extension pressure ring is movable within the through-hole, and a through hole is provided within the extension pressure ring, with a positioning rod disposed within the through hole; a pressure block is provided within the circular groove, and the lower end of the extension pressure ring is integrally connected to the pressure block; multiple inner grooves are provided on the outer side of the central through block, and an arc-shaped rod is rotatably disposed within the inner groove, with a return spring disposed between the inner wall of the inner groove and the arc-shaped rod; the pressure block abuts against the upper end of the arc-shaped rod.

[0010] Further configuration: the cross-sections of the positioning rod, the through-hole, and the through-hole are all rectangular, and the cross-section of the extended pressure ring is U-shaped.

[0011] A further feature is provided: an inner diameter scale is provided above the positioning rod.

[0012] In summary, this utility model has the following beneficial effects: the adjustment structure of the positioning rod enables the alignment of the center points of gears of different sizes, achieving rapid positioning and efficient adjustment, simplifying the positioning process of the gear center, and significantly improving the detection efficiency. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of a device used for detecting gear dimensions.

[0014] Figure 2 This is a top view schematic diagram of a device used for detecting gear dimensions;

[0015] Figure 3 for Figure 2 Schematic diagram of cross-section at point AA.

[0016] In the diagram: 1. Base; 2. Upper layer; 21. Outer sliding groove; 3. Lower layer; 31. Lower sliding rail; 4. Moving seat; 5. Moving wall; 6. Fixed wall; 7. Sliding seat; 8. Positioning rod; 9. Extension rail; 10. Center through block; 101. Through section; 102. Fixed section; 103. Transition section; 11. Circular groove; 12. Through pressure hole; 13. Extension pressure ring; 14. Through hole; 15. Pressure block; 16. Inner groove; 17. Arc rod; 18. Return spring; 19. Inner diameter scale. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings.

[0018] A device for detecting gear dimensions includes a base 1, which comprises upper and lower layers.

[0019] The upper layer 2 of the base 1 is provided with an outer sliding groove 21, which can be two grooves, left and right. A movable seat 4 is slidably mounted on the two outer sliding grooves 21, and a moving wall 5 is provided on the movable seat 4. The movable seat 4 can be pushed by an electric push rod or manually.

[0020] A fixed wall 6 is provided on the other end of the base 1 relative to the movable seat 4.

[0021] The upper layer 2 of the base 1 has a scale on its side, which increases from the fixed wall 6 end to the moving wall 5 end. The gear whose size needs to be measured is placed between the moving wall 5 and the fixed wall 6. When the moving wall 5 is pushed towards the fixed wall 6 to the leftmost position as shown in the figure, the size can be determined according to the position of the scale on the moving wall 5.

[0022] An extension rail 9 is provided on the upper layer 2 of the base 1, located between two outer sliding grooves 21. A lower slide rail 31 is provided on the lower slide rail 31, and a sliding seat 7 is slidably mounted on the lower slide rail 31. A positioning rod 8 is provided on the sliding seat 7, extending upward through the extension rail 9. The cross-section of the positioning rod 8 is preferably rectangular. A central through block 10 is provided on the positioning rod 8 above the upper layer 2, and a gear is sleeved on the central through block 10.

[0023] The central through-block 10 includes a through-section 101 located at the top, a fixing section 102 integrally formed below the through-section 101, and a smooth transition section 103 between the through-section 101 and the fixing section 102. The transverse cross-sections of the through-section, the transition section 103, and the fixing section 102 are all circular. The size of the fixing section 102 should be smaller than the minimum inner diameter of the gear to avoid the problem of the gear not fitting properly.

[0024] The bottom of the central through block 10 is provided with a circular groove 11, and the bottom of the circular groove 11 is provided with a rectangular through pressure hole 12. A U-shaped extension pressure ring 13 is provided in the through pressure hole 12, and a circular pressure block 15 is integrally provided at the lower end of the extension pressure ring 13. A rectangular hole is provided in the extension pressure ring 13, which extends to the bottom of the pressure block 15 and exits. The positioning rod 8 exits from the rectangular hole to connect with the central through block 10 and keep the central through block 10 from rotating in the radial direction.

[0025] As shown in the figure, multiple inner grooves 16 are provided on the outer side of the fixing part 102 of the central through block 10, and an arc-shaped rod 17 is rotatably arranged inside the inner groove 16. A return spring 18 is provided between the inner wall of the inner groove 16 and the arc-shaped rod 17. The return spring 18 can be a torsion spring, which is used to rotate the lower end of the arc-shaped rod 17 downward.

[0026] When the extension pressure ring 13 is pressed downwards, the lower end of the arc-shaped rod 17 tilts upwards, causing the arc-shaped rod 17 to abut against the inner wall of the gear and aligning the center position of the gear with the center position of the center through block 10. Simultaneously, an inner diameter scale 19 is provided above the positioning rod 8; the inner diameter of the gear can be determined based on the downward pressing distance of the extension pressure ring 13. It should be noted that due to the angle at which the arc-shaped rod 17 is pressed down by the pressure block 15, the scale arrangement is not uniform, but the specific inner diameter value of the gear can still be displayed. Preferably, a circular end can be provided at the upper end of the extension pressure ring 13 to increase the pressing area, but its size should not exceed the fixing part 102 to avoid affecting the gear fitting.

[0027] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A device for the detection of the size of a gearwheel, characterized in that: The system includes a base, which comprises upper and lower layers. The upper layer of the base has an outer sliding groove, on which a movable seat is slidably mounted, and on which a moving wall is mounted. A fixed wall is provided at the other end of the base opposite to the movable seat. The lower layer of the base has a lower sliding rail, on which a sliding seat is slidably mounted, and on which a positioning rod is mounted. The upper layer of the base has an extension rail located between the outer sliding grooves. The positioning rod extends upward through the extension rail, and at its end is a central through block, on which a gear is fitted.

2. A device for detecting the size of a gear according to claim 1, characterized in that: The central through block includes an upper through section, a fixed section integrally formed below the through section, and a smooth transition section between the through section and the fixed section.

3. A device for detecting the size of a gear according to claim 1, characterized in that: The bottom of the central through block has a circular groove, and the bottom of the circular groove has an upward-facing through-hole. A rectangular extension pressure ring is movable within the through-hole, and a through hole is provided within the extension pressure ring. A positioning rod is located within the through hole. A pressure block is provided within the circular groove, and the lower end of the extension pressure ring is integrally connected to the pressure block. Multiple inner grooves are provided on the outer side of the central through block, and an arc-shaped rod is rotatably provided within the inner groove. A return spring is provided between the inner wall of the inner groove and the arc-shaped rod. The pressure block abuts against the upper end of the arc-shaped rod.

4. A device for detecting the size of a gear according to claim 3, characterized in that: The positioning rod, through-hole, and through-hole all have rectangular cross-sections, while the extension pressure ring has a U-shaped cross-section.

5. A device for detecting the size of a gear according to claim 3, characterized in that: The positioning rod has an inner diameter scale on its upper part.

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