Double-layer gear center distance measuring device

Abstract

The utility model discloses a double-layer gear center distance measuring device, comprising an intermediate shaft used for coaxially placing a detected gear; the two tool gears are located on the two sides of the intermediate shaft respectively, and each tool gear is meshed with one detected gear; the linear guide mechanism is connected with the tool gear through moving blocks, and the two moving blocks have mechanical degrees of freedom which are close to each other or far away from each other along the linear guide mechanism; and the abutting mechanism can make contact with the moving blocks, the distance between the abutting mechanism and the middle shaft is larger than the distance between the moving block on the side where the abutting mechanism is located and the middle shaft, and the abutting mechanism can apply opposite approaching extrusion force to the moving blocks of the two tool gears. According to the tool device, the tool gears on the two sides can be used for oppositely approaching and abutting against each other, and whether the coaxiality and the center distance of the double-layer gear meet the requirements or not can be rapidly judged by observing whether the abutting states of the two sides are the same or not.

Description

Technical Field

[0001] The utility model relates to the field of gear detection, in particular to a device for measuring the center distance of double-layer gears. Background Art

[0002] Gears are a fundamental component of robots. Coaxial double-layer gears are one type of gear. Coaxial double-layer gears allow two gears to be stacked tightly together, significantly saving space and enabling speed changes in mechanical equipment.

[0003] The center distance of machined coaxial double-layer gears must be tested, as the design of the gear center distance is closely related to the gear transmission efficiency and lifespan. A center distance that is too small or too large will negatively impact the gear transmission efficiency and lifespan. Specifically, a center distance that is too small will lead to load concentration, increase wear on the gears and bearings, and reduce transmission efficiency and lifespan. A center distance that is too large will increase gear meshing clearance, reducing transmission smoothness and accuracy, also affecting transmission efficiency and lifespan. Regardless, maintaining the highest possible coaxiality of coaxial double-layer gears is a constant pursuit of the industry, and a simple and reliable way to test the center distance of finished gears is also essential. Utility Model Content

[0004] The problem to be solved by the present invention is to provide a device for measuring the center distance of double-layer gears. A tooling device is designed, which can use the tooling gears on both sides to press them close to each other. By observing whether the pressing states of the two sides are the same, it is possible to quickly judge whether the coaxiality and center distance of the double-layer gears meet the requirements.

[0005] In order to solve the above problems, the present invention provides a double-layer gear center distance measuring device. To achieve the above purpose, the technical solution adopted by the present invention to solve its technical problems is:

[0006] A double-layer gear center distance measuring device comprises: an intermediate shaft for coaxially placing a gear to be tested; a tooling gear, wherein two tooling gears are respectively located on either side of the intermediate shaft, and each tooling gear is respectively engaged with a gear to be tested; a linear guide mechanism, connected to the tooling gear via a moving block, and the two moving blocks have the mechanical freedom to move closer to or away from each other along the linear guide mechanism; a pressing mechanism, capable of contacting the moving blocks, the distance from the pressing mechanism to the intermediate shaft being greater than the distance from the moving block on one side to the intermediate shaft, and the pressing mechanism can apply a pressing force to the moving blocks of the two tooling gears to move them closer to each other.

[0007] The beneficial effects of adopting the above technical solution are: the gear to be tested is the gear that needs to be tested. In theory, the two double-layer gears need to be coaxial. The tooling gear is the one that comes with the tooling and is used for a long time. During testing, the two gears to be tested are respectively put on the intermediate shaft, and then the moving blocks are moved closer to each other, and each gear to be tested is fitted with a tooling gear. The linear guide mechanism provides linear guide freedom. Finally, the tightening mechanism is used to further make the test gears or tooling gears mesh with each other. If the center distance of the double-layer tested gear meets the design requirements, the two tightening mechanisms can be tightened at the same time, or the tightening force is the same. By determining the state of the tightening mechanism, it can be quickly determined whether the double-layer tested gear meets the requirements. The tightening mechanism means to press and press. This tooling and this device are simple and reliable, and can quickly detect whether the coaxiality and center distance of the double-layer gears meet the requirements.

[0008] As a further improvement of the present invention, the tightening mechanism includes a toggle clamp.

[0009] The beneficial effect of adopting the above technical solution is that the toggle clamp can provide a larger clamping force, and if there is a problem with the center distance, it will be reflected in the toggle clamp, which will easily lead to the toggle clamp being difficult to close or the closing force being significantly different.

[0010] As a further improvement of the present invention, the linear guide mechanism includes a linear guide rail, on which two sliders are movably mounted, each slider is fixed with a moving block, and the linear guide rail is fixed with a base plate.

[0011] The beneficial effect of adopting the above technical solution is that the combination of the linear guide rail and the slider can provide linear guidance with low friction resistance.

[0012] As a further improvement of the present invention, a pad is fixed to the bottom plate, and a tightening mechanism is fixed to the top of the pad.

[0013] The beneficial effect of adopting the above technical solution is that the pad block is convenient for raising the position of the pressing mechanism and for pressing against the moving block.

[0014] As a further improvement of the present invention, the moving block includes a first moving block and a second moving block, the tooling gear includes a first tooling gear and a second tooling gear, the top of the first moving block is movably assembled with the first tooling gear, the top of the second moving block is movably assembled with the second tooling gear, and the first tooling gear and the second tooling gear are staggered in height.

[0015] The beneficial effect of adopting the above technical solution is that the tooling gears on both sides of the gear being inspected can be independently translated and positioned oppositely.

[0016] As a further improvement of the present invention, the intermediate shaft is fixed to the midpoint of the linear guide rail, the inspected gears include a first inspected gear and a second inspected gear, the pitch circle diameter of the first inspected gear is smaller than the pitch circle diameter of the second inspected gear, the first tooling gear and the first inspected gear can be at the same horizontal height and mesh with each other, and the second tooling gear and the second inspected gear can be at the same horizontal height and mesh with each other.

[0017] The beneficial effect of adopting the above technical solution is that the two gears to be inspected are smaller at the top and larger at the bottom, which is convenient for arrangement.

[0018] As a further improvement of the present invention, the first tooling gear and the second tooling gear have equal pitch circle diameters, and the pitch circle diameter of the first tooling gear or the second tooling gear is smaller than the pitch circle diameter of the first inspected gear.

[0019] The beneficial effect of adopting the above technical solution is that the tooling gears are of uniform and relatively small size, which facilitates the rapid contact and meshing of the gears being tested.

[0020] As a further improvement of the present invention, the first tooling gear and the second tooling gear are independent driving wheels.

[0021] The beneficial effect of adopting the above technical solution is that when the tooling gear rotates actively, it will drive the inspected gear. At this time, the inspected gear is the driven gear. If the center distance and coaxiality are consistent, the resistance when the active gear drives the driven gear will be the same.

[0022] As a further improvement of the present invention, the inspected gear and the tooling gear each have the freedom of rotation, the tooling gear is assembled with the moving block through a rotating shaft, and each rotating shaft and the moving block are assembled with each other through several bearings arranged along the axial direction.

[0023] The beneficial effects of adopting the above technical solution are: a large number of bearings ensure the stability of the rotating shaft, and the rotating shaft is not prone to deflection even if it is subjected to a tight extrusion force, thereby ensuring the accuracy of detection.

[0024] As a further improvement of the present invention, the tooling gear and the inspected gear are both helical gears. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1This is a front view of an embodiment of the utility model;

[0027] Figure 2 It is a top view of an embodiment of the utility model;

[0028] Figure 3 It is an AA cross-sectional view of an embodiment of the present utility model;

[0029] Figure 4 It is a side view of an embodiment of the utility model;

[0030] Figure 5 It is a perspective view of an embodiment of the present utility model;

[0031] Figure 6 It is a three-dimensional diagram of an embodiment of the present utility model.

[0032] 1-base plate; 2-pad; 3-linear guide; 4-slider; 5-elbow clamp; 6-intermediate shaft; 61-first cylindrical segment; 62-second cylindrical segment; 63-third cylindrical segment; 7-first moving block; 8-second moving block; 9-first inspected gear; 10-second inspected gear; 11-first tooling gear; 12-second tooling gear; 13-rotating shaft; 14-bearing. DETAILED DESCRIPTION

[0033] The following is a further detailed description of the present invention in conjunction with specific embodiments:

[0034] In order to achieve the purpose of this utility model, Figure 5 As shown, a double-layer gear center distance measuring device includes: an intermediate shaft 6 for coaxially placing the gear to be tested; a tooling gear, two tooling gears are respectively located on both sides of the intermediate shaft 6, and each tooling gear is respectively engaged with a gear to be tested; a linear guide mechanism, which is connected to the tooling gear through a moving block, and the two moving blocks have mechanical freedom to approach or move away from each other along the linear guide mechanism; a clamping mechanism, which can contact with the moving block, and the distance from the clamping mechanism to the intermediate shaft 6 is greater than the distance from the moving block on one side to the intermediate shaft 6, and the clamping mechanism can apply an extrusion force to the moving blocks of the two tooling gears to move toward each other.

[0035] The beneficial effects of adopting the above technical solution are: the gear to be tested is the gear that needs to be tested. In theory, the two double-layer gears need to be coaxial. The tooling gear is the one that comes with the tooling and is used for a long time. During testing, the two gears to be tested are respectively put on the intermediate shaft, and then the moving blocks are moved closer to each other, and each gear to be tested is fitted with a tooling gear. The linear guide mechanism provides linear guide freedom. Finally, the tightening mechanism is used to further make the test gears or tooling gears mesh with each other. If the center distance of the double-layer tested gear meets the design requirements, the two tightening mechanisms can be tightened at the same time, or the tightening force is the same. By determining the state of the tightening mechanism, it can be quickly determined whether the double-layer tested gear meets the requirements. The tightening mechanism means to press and press. This tooling and this device are simple and reliable, and can quickly detect whether the coaxiality and center distance of the double-layer gears meet the requirements.

[0036] In other embodiments of the present invention, the abutting mechanism includes a toggle clamp 5 .

[0037] The toggle clamp 5 is a quick clamp or a quick fixture that utilizes the dead point principle of a connecting rod mechanism.

[0038] The beneficial effect of adopting the above technical solution is that the toggle clamp can provide a larger clamping force, and if there is a problem with the center distance, it will be reflected in the toggle clamp, which will easily lead to the toggle clamp being difficult to close or the closing force being significantly different.

[0039] In other embodiments of the present invention, the linear guide mechanism includes a linear guide rail 3 , on which two sliders 4 are movably mounted, each slider 4 is fixed with a moving block, and the linear guide rail 3 is fixed with a base plate 1 .

[0040] Scales may be drawn on the base plate 1 along the linear guide rail 3 .

[0041] The beneficial effect of adopting the above technical solution is that the combination of the linear guide rail and the slider can provide linear guidance with low friction resistance.

[0042] In other embodiments of the present invention, a cushion block 2 is further fixed to the bottom plate 1 , and a tightening mechanism is fixed to the top of the cushion block 2 .

[0043] The beneficial effect of adopting the above technical solution is that the pad block is convenient for raising the position of the pressing mechanism and for pressing against the moving block.

[0044] In other embodiments of the present invention, the moving block includes a first moving block 7 and a second moving block 8, and the tooling gear includes a first tooling gear 11 and a second tooling gear 12. The top of the first moving block 7 is movably assembled with the first tooling gear 11, and the top of the second moving block 8 is movably assembled with the second tooling gear 12. The first tooling gear 11 and the second tooling gear 12 are staggered in height.

[0045] The beneficial effect of adopting the above technical solution is that the tooling gears on both sides of the gear being inspected can be independently translated and positioned oppositely.

[0046] In other embodiments of the present invention, the intermediate shaft 6 is fixed to the midpoint of the linear guide rail 3, the inspected gears include a first inspected gear 9 and a second inspected gear 10, the pitch circle diameter of the first inspected gear 9 is smaller than the pitch circle diameter of the second inspected gear 10, the first tooling gear 11 and the first inspected gear 9 can be at the same horizontal height and mesh with each other, and the second tooling gear 12 and the second inspected gear 10 can be at the same horizontal height and mesh with each other.

[0047] The beneficial effect of adopting the above technical solution is that the two gears to be inspected are smaller at the top and larger at the bottom, which is convenient for arrangement.

[0048] In other embodiments of the present invention, the first tooling gear 11 and the second tooling gear 12 have the same pitch circle diameter, and the pitch circle diameter of the first tooling gear 11 or the second tooling gear 12 is smaller than the pitch circle diameter of the first inspected gear 9 .

[0049] The beneficial effect of adopting the above technical solution is that the tooling gears are of uniform and relatively small size, which facilitates the rapid contact and meshing of the gears being tested.

[0050] In other embodiments of the present invention, the first tooling gear 11 and the second tooling gear 12 are independent driving wheels.

[0051] The beneficial effect of adopting the above technical solution is that when the tooling gear rotates actively, it will drive the inspected gear. At this time, the inspected gear is the driven gear. If the center distance and coaxiality are consistent, the resistance when the active gear drives the driven gear will be the same.

[0052] like Figure 3 As shown, in other embodiments of the present invention, the inspected gear and the tooling gear each have the freedom of rotation, and the tooling gear is assembled with the moving block through a rotating shaft 13. Each rotating shaft 13 and the moving block are assembled with each other through several bearings 14 arranged along the axial direction.

[0053] The beneficial effects of adopting the above technical solution are: a large number of bearings ensure the stability of the rotating shaft, and the rotating shaft is not prone to deflection even if it is subjected to a tight extrusion force, thereby ensuring the accuracy of detection.

[0054] In other embodiments of the present invention, the tooling gear and the inspected gear are both helical gears.

[0055] in, Figure 5 It is an oblique perspective from top to bottom. Figure 6 It is an oblique perspective from bottom to top.

[0056] like Figure 3 As shown, the intermediate shaft 6 is a stepped shaft. From top to bottom, the diameter of the intermediate shaft 6 increases, forming a first cylindrical section 61, a second cylindrical section 62, and a third cylindrical section 63. The first inspected gear 9 is mounted on the first cylindrical section 61, and the second inspected gear 10 is mounted on the second cylindrical section 62.

[0057] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A double-layer gear center distance measuring device, characterized in that: include: Intermediate shaft, used for coaxial placement of the gear to be inspected; Tooling gears: two tooling gears are located on both sides of the intermediate shaft, and each tooling gear is meshed with a gear to be inspected; The linear guide mechanism is connected to the tooling gear through a moving block, and the two moving blocks have the mechanical freedom to move closer to or away from each other along the linear guide mechanism; The pressing mechanism can contact the moving block, the distance between the pressing mechanism and the intermediate shaft is greater than the distance between the moving block on one side and the intermediate shaft, and the pressing mechanism can apply a pressing force to the moving blocks of the two tooling gears to move them closer together.

2. The double-layer gear center distance measuring device according to claim 1, characterized in that: The abutting mechanism includes a toggle clamp.

3. The double-layer gear center distance measuring device according to claim 1, characterized in that: The linear guide mechanism comprises a linear guide rail, two sliders are movably mounted on the linear guide rail, each slider is fixed with a moving block, and the linear guide rail is fixed with a base plate.

4. The double-layer gear center distance measuring device according to claim 3, characterized in that: The bottom plate is also fixed with a cushion block, and the top of the cushion block is fixed with a tightening mechanism.

5. The double-layer gear center distance measuring device according to claim 1, characterized in that: The moving block includes a first moving block and a second moving block, and the tooling gear includes a first tooling gear and a second tooling gear. The top of the first moving block is movably assembled with the first tooling gear, and the top of the second moving block is movably assembled with the second tooling gear. The first tooling gear and the second tooling gear are staggered in height.

6. The double-layer gear center distance measuring device according to claim 5, characterized in that: The intermediate shaft is fixed to the midpoint of the linear guide rail, and the inspected gears include a first inspected gear and a second inspected gear. The pitch circle diameter of the first inspected gear is smaller than the pitch circle diameter of the second inspected gear. The first tooling gear and the first inspected gear can be at the same level and mesh with each other, and the second tooling gear and the second inspected gear can be at the same level and mesh with each other.

7. The double-layer gear center distance measuring device according to claim 6, characterized in that: The first tooling gear and the second tooling gear have the same pitch circle diameter. The pitch circle diameter of the first tooling gear or the second tooling gear is smaller than the pitch circle diameter of the first inspected gear.

8. The double-layer gear center distance measuring device according to claim 5, characterized in that: The first tooling gear and the second tooling gear are independent driving wheels.

9. The double-layer gear center distance measuring device according to claim 1, characterized in that: The inspected gear and the tooling gear each have a degree of freedom of rotation. The tooling gear is assembled with a moving block via a rotating shaft. Each rotating shaft and the moving block are assembled with each other via a plurality of bearings arranged along the axial direction.

10. The double-layer gear center distance measuring device according to claim 1, characterized in that: The tooling gear and the inspected gear are both helical gears.

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