Radial run-out detection device for II-level wandering star gear frame hole
By designing a Class II planetary gear frame hole radial runout detection device with positioning and measuring components, the difficulties of traditional measurement methods have been solved, achieving accurate coaxiality measurement and reducing production costs and handling risks.
Patent Information
- Application Number
- CN202422722623.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-08
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-11-08
AI Technical Summary
Traditional methods cannot effectively measure the coaxiality of the Class II planetary gear frame. Coordinate measurement is difficult and inconvenient to operate, and there are risks and high costs associated with handling.
A detection device including a positioning component and a measuring component was designed. It uses a sector lever and a tapered mandrel to achieve automatic centering and coaxiality measurement. The radial movement of the probe is displayed by a dial indicator, which simplifies operation and reduces handling risks.
It enables precise measurement of the coaxiality of frame holes at any position, reduces production costs, improves measurement accuracy and ease of operation, and avoids product transport accidents.
Smart Images
Figure CN223538269U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of planetary gear technology, specifically to a radial runout detection device for a Class II planetary gear frame hole. Background Technology
[0002] The Class II planetary gear mechanism has its input and output shafts aligned on the same straight line. It also incorporates two or more planetary gears, allowing for load sharing. Therefore, the planetary gear mechanism can reduce the size of the reducer. However, it has a complex structure and requires high machining precision.
[0003] When repairing the Class II planetary gear frame, the process requires measuring the coaxiality value of the two bearing mounting holes in the upper and lower frames (reference). Figure 1 , Figure 3 As shown in the figure, it is impossible to measure the circumference of the hole using traditional lathe clamping and measurement or runout measurement. Using coordinate measuring machine is inconvenient and time-consuming because the product is large and heavy, difficult to move, has many measurement positions, and is difficult to operate.
[0004] Therefore, a Class II planetary gear frame hole radial runout detection device is proposed, which can solve the problems that traditional coaxiality measurement methods cannot achieve and coordinate measuring machines are difficult to use. Utility Model Content
[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and to solve the problems of the inability to achieve coaxiality measurement by traditional methods and the difficulty of three-coordinate measurement. This invention proposes a Class II planetary gear frame hole radial runout detection device. This device can meet the measurement accuracy requirements and can measure at any position of the product without the need to handle the product, thereby reducing the risk of accidents that may occur during product transportation and saving production costs.
[0006] The objective of this utility model is achieved through the following technical solution:
[0007] A Class II planetary gear frame bore radial runout detection device, comprising an upper frame and a lower frame, with corresponding bearing holes on the upper and lower frames. The device includes a positioning component and a measuring component. The positioning component includes a base, which is automatically rotatably mounted within the lower frame bearing hole. The measuring component includes a probe, a probe holder, and a dial indicator vertically mounted above the probe holder. The probe holder is vertically adjustable on the base, and the probe is horizontally slidable on the probe holder. The probe and the dial indicator rod form a 90° angle. A displacement transmitter is rotatably mounted on the probe holder, with its rotation plane being vertical. The displacement transmitter has an upper surface and a lower surface forming an angle. The bottom end of the dial indicator rod contacts its upper surface, the inner end of the probe contacts its lower surface, and the outer end of the probe protrudes laterally from the probe holder.
[0008] When the probe moves laterally and pushes the displacement transmitter to rotate, the upper surface of the displacement transmitter can simultaneously press against the dial indicator rod and cause it to move vertically. This allows the displacement transmitter to transmit the lateral displacement of the probe to the rod in a 1:1 ratio.
[0009] In a preferred embodiment of this solution, the displacement transmission component is a sector lever, which is hinged to the probe base. The bottom end of the dial indicator rod contacts the upper surface of the sector lever, and the inner end of the probe contacts the lower surface of the sector lever.
[0010] In a preferred embodiment of this solution, the measuring component further includes an adjustment plate, which is adjustable up and down and mounted on the base, with the probe holder fixedly mounted on one side of the adjustment plate.
[0011] In a preferred embodiment of this solution, the base is further provided with an adjusting cylinder, which has external threads, and an adjusting plate is screwed onto the adjusting cylinder; a compression spring is also fitted onto the adjusting cylinder, and the compression spring abuts against the upper surface of the adjusting plate and the base. By changing the compression distance and pressure of the compression spring, coaxiality measurement of different cross-sections can be achieved.
[0012] In a preferred embodiment of this solution, the inner wall of the vertical cylinder is provided with a downward-facing abutment step, and a pressure spring and a push rod are provided inside the vertical cylinder; the push rod has a shoulder in the middle, and the pressure spring is fitted on the push rod and abuts between the abutment step and the shoulder; a dial indicator is installed at the top of the vertical cylinder through a dial indicator clamp nut, and the dial indicator rod passes downward from the top of the vertical cylinder into the vertical cylinder and abuts against the top of the push rod; the bottom of the push rod abuts against the upper surface of the fan-shaped lever.
[0013] In a preferred embodiment of this solution, an adjusting cylinder is provided in the middle of the base; a cavity is formed inside the adjusting cylinder, extending into the interior of the base; the positioning assembly also includes multiple positioning push rods, and multiple transverse through holes are opened on the four sides of the base corresponding to the multiple positioning push rods, with the multiple positioning push rods passing through the transverse through holes; a tapered mandrel is also screwed into the adjusting cylinder, the bottom of the tapered mandrel being inverted conical or frustum-shaped, and when the bottom of the adjusting cylinder moves downward to the positioning push rods, the bottom of the tapered mandrel can simultaneously push out multiple positioning push rods. This enables automatic centering of the base.
[0014] In a preferred embodiment of this solution, the top of the base is provided with a plurality of vertical holes corresponding to the positioning rod, and the positioning rod is provided with a vertical through hole in the middle; the positioning assembly also includes a plurality of limiting pins, which can be inserted into the vertical through hole in the middle of the positioning rod through the vertical holes; when the bottom end of the tapered mandrel is not screwed into the base, the positioning rod can slide left and right a certain distance under the limitation of the limiting pins.
[0015] In a preferred embodiment of this solution, the inner end of the positioning push rod is provided with an inclined surface that matches the bottom of the tapered mandrel, and the outer end of the positioning push rod is spherical. The inclined surface design of the inner end facilitates the stable pushing of the positioning push rod by the tapered mandrel, while the spherical shape of the outer end helps to reduce resistance during rotation, resulting in a simple and reasonable structural design.
[0016] In a preferred embodiment of this solution, a locking nut is screwed onto the upper part of the tapered mandrel.
[0017] In a preferred embodiment of this solution, the bottom of the base has an annular boss protruding downwards, and a deep groove ball bearing is sleeved on the outside of the annular boss. The outer ring of the deep groove ball bearing is supported at the bottom end face of the bearing hole of the lower frame to limit the axial movement of the positioning component.
[0018] The beneficial effects of this utility model are:
[0019] This solution's Class II planetary gear frame hole radial runout detection device includes a measuring component and a positioning component. The measuring component consists of a dial indicator, a clamp nut, a rod, an adjusting plate, a compression spring, a probe, a sector lever, a pressure spring, a push rod, and a probe seat. The sector lever, under the action of gravity, drives the probe and the push rod to move linearly. Since the probe and the push rod are at a 90° angle, their movements are equal. Under the action of the pressure spring, the push rod keeps its movement stable, allowing the radial movement of the probe to be stably displayed on the dial indicator, thus realizing the coaxiality measurement of a single section.
[0020] The positioning assembly consists of a base, a deep groove ball bearing, a positioning pin, a limit pin, a tapered mandrel, a lock nut, and a handle. The outer ring of the deep groove ball bearing is supported on the lower end face of the bearing hole in the lower frame, which restricts the axial movement of the positioning assembly. The limit pin connects the positioning pin to the base and ensures that the positioning pin moves in a straight line under the action of the tapered mandrel. There are at least three positioning pins, which are evenly distributed around the base. Based on the principle that three points determine a circle, the tapered mandrel ensures that the multiple positioning pins move in a straight line at equal intervals, thereby realizing the automatic centering of the positioning assembly.
[0021] therefore:
[0022] (1) The device of this scheme is simple to operate and can solve the problem that traditional coaxiality measurement methods cannot achieve and coordinate measurement is difficult. Moreover, the device has a simple and compact structure and can measure at any position of the product without moving the product, which reduces the risk of accidents that may occur during product transportation and saves production costs.
[0023] (2) The device in this scheme utilizes the principle of converting the rotational motion of the 90° sector lever into the equivalent linear motion of the two right-angled parts to realize the coaxiality measurement of the hole in a narrow position;
[0024] (3) The device in this scheme uses a tapered mandrel to realize the automatic centering of three positioning rods, ensuring that the measuring hole rotates and measures along the reference axis. It is simple to operate, has high measurement accuracy, and can be widely used for measuring similar products. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the structure of this utility model;
[0026] Figure 2 This is the front view of this utility model;
[0027] Figure 3 This is a schematic diagram of the usage state of this utility model;
[0028] Figure 4 This is a three-dimensional structural diagram of the present invention;
[0029] Figure 5 This is a schematic diagram of the outer end of the probe of this utility model. Detailed Implementation
[0030] The technical solution of this utility model is described in further detail below with reference to the accompanying drawings, but the scope of protection of this utility model is not limited to the following description.
[0031] like Figures 1 to 5 As shown, the radial runout detection device for the Class II planetary gear frame hole is used to measure the coaxiality between the upper frame bearing hole a and the lower frame bearing hole b of the Class II planetary gear frame; the device includes a positioning component and a measuring component.
[0032] Specifically, in this embodiment, the positioning component includes a base 4, which is automatically rotatably mounted in the bearing hole b of the lower frame; the measuring component includes a probe 11 and a probe holder 15, which is mounted on the base 4. The probe 11 is slidably mounted on the probe holder 15, and a dial indicator 1 is vertically mounted on the probe holder 15. The probe 11 and the dial indicator 1's stem 9 form a 90° angle. A displacement transmission component is also rotatably mounted on the probe holder 15, and the displacement transmission component has an upper surface and a lower surface that form an angle with each other. On the dial indicator 1, the bottom end of the dial indicator rod 9 contacts its upper surface, the inner end of the probe 11 contacts its lower surface, and the outer end of the probe 11 protrudes laterally from the probe seat 15. Since the probe 11 and the push rod 14 form a 90° angle, the movement of the probe 11 and the push rod 14 is equal. Under the action of the pressure spring 13, the movement of the push rod 14 can be kept stable, so that the radial movement of the probe 11 can be stably displayed on the dial indicator 1. Thus, this scheme can realize the coaxiality measurement of a single section on the horizontal plane.
[0033] Furthermore, in this scheme, the probe holder 15 is mounted on the base 4 in an adjustable manner. By changing the vertical position of the probe holder 15, the measurement cross section can be changed, and the coaxiality measurement of multiple cross sections can be completed by repeating the previous operation.
[0034] Specifically, in this embodiment, the measuring component also includes an adjustment plate 3, which is adjustable up and down and mounted on the base 4. The probe holder 15 is fixedly mounted on one side of the adjustment plate 3.
[0035] Furthermore, in this scheme, the displacement transmission component is a sector lever 12, which is hinged to the probe seat 15. The bottom end of the dial indicator 1 rod 9 is in contact with the upper surface of the sector lever 12, and the inner end of the probe 11 is in contact with the lower surface of the sector lever 12.
[0036] Furthermore, in this design, the probe holder 15 is also provided with a vertical cylinder 18, and the pressure spring 13 and the push rod 14 are both set inside the vertical cylinder 18; the push rod 14 has a shoulder in the middle, the pressure spring 13 is fitted on the push rod 14 and abuts against the abutting step and the shoulder; the dial indicator 1 is installed on the top of the vertical cylinder 18 through the gauge clamp nut 2, and the gauge rod 9 of the dial indicator 1 passes down from the top of the vertical cylinder 18 into the vertical cylinder 18 and abuts against the top of the push rod 14; the bottom of the push rod 14 abuts against the upper surface of the sector lever 12.
[0037] To enable the probe holder 15 to be adjusted up and down, in this embodiment, the base 4 is also provided with an adjusting cylinder 19, which has an external thread, and the adjusting plate 3 is screwed onto the adjusting cylinder 19; a compression spring 10 is also fitted on the adjusting cylinder 19, and the compression spring 10 abuts between the adjusting plate 3 and the upper surface of the base 4; rotating the adjusting plate 3 drives the measuring component to move along the hole axis, so that the probe 11 can achieve coaxiality measurement of different cross-sections at different cross-sectional positions.
[0038] More preferably, in this solution, the positioning assembly consists of a base 4, a deep groove ball bearing 16, a positioning top rod 5, a limit pin 17, a tapered mandrel 6, a locking nut 7, and a handle 8.
[0039] refer to Figure 1 As shown, in this embodiment, the base 4 has an adjusting cylinder 19 in the middle, and a cavity is formed inside the adjusting cylinder 19, which extends downward into the interior of the base 4; the four walls of the base 4 have transverse through holes corresponding to the positioning top rod 5, and the positioning top rod 5 passes through the transverse through holes; the conical mandrel 6 is screwed into the adjusting cylinder 19, and the bottom of the conical mandrel 6 is in the shape of an inverted frustum.
[0040] The outer ring of the deep groove ball bearing 16 is supported on the lower end face of the bearing hole b in the lower frame, which restricts the axial movement of the positioning assembly. The limiting pin 17 connects the positioning pin 5 to the base and ensures that the positioning pin 5 moves in a straight line under the action of the tapered spindle 6. There are 3 positioning pins 5. According to the principle that three points determine a circle, the tapered surface of the tapered spindle 6 ensures that the 3 positioning pins 5 move in a straight line at equal distances, thereby realizing the automatic centering of the positioning assembly.
[0041] To ensure that the positioning pin 5 moves linearly under the action of the tapered spindle 6, specifically, refer to... Figure 1 , Figure 4 As shown, in this embodiment, the base 4 has three vertical holes on its top. The cross-section of the vertical holes is rectangular, and the width of the rectangle is matched with the diameter of the limiting pin 17. The positioning rod 5 has a vertical through hole in its middle. The limiting pin 17 can be inserted into the vertical through hole in the middle of the positioning rod 5 through the vertical hole, so that the positioning rod 5 can slide linearly a certain distance under the limitation of the limiting pin 17.
[0042] In a further preferred embodiment, the inner end of the positioning rod 5 is provided with an inclined surface that matches the bottom of the tapered mandrel 6, and the outer end of the positioning rod 5 is spherical.
[0043] In this embodiment, a locking nut 7 is screwed onto the upper part of the tapered mandrel 6.
[0044] like Figure 1 , Figure 3 As shown, loosen the locking nut 7, and rotate the conical mandrel 6 counterclockwise by turning the handle 8, allowing the positioning rod 5 to extend into the base 4. Place the assembly into the lower frame of the Class II planetary gear. Rotate the conical mandrel 6 clockwise by turning the handle 8, causing the positioning rod 5 to extend and contact the bearing hole b of the lower frame. Tighten the locking nut 7 to ensure the positioning rod 5 is stable in the bearing hole b of the lower frame, completing the fixing of the measurement reference hole. Loosen the dial indicator clamp nut 2, and install the dial indicator 1 into the testing device. When the dial indicator 1 displays half a turn of compression, tighten the dial indicator clamp nut 2 to fix the dial indicator 1. Operate the handle 8 to rotate the testing device one full turn and read the change value of the dial indicator 1, which is the coaxiality value of one section. Rotate the adjusting plate 3 to change the measurement section, and repeat the previous operation to complete the coaxiality measurement of multiple sections.
[0045] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.
Claims
1. A device for detecting radial runout of a Class II planetary gear frame bore, the Class II planetary gear frame comprising an upper frame and a lower frame, wherein the upper frame and lower frame are respectively provided with an upper frame bearing hole (a) and a lower frame bearing hole (b), characterized in that: The device includes a positioning component and a measuring component; The positioning component includes a base (4), which is automatically rotatably mounted in the bearing hole (b) of the lower frame; The measuring assembly includes a probe (11), a probe holder (15), and a dial indicator (1) mounted vertically above the probe holder (15). The probe holder (15) is mounted on the base (4) in an adjustable manner. The probe (11) is mounted on the probe holder (15) in a horizontally sliding manner. The probe (11) forms a 90° angle with the rod (9) of the dial indicator (1). A displacement transmission component is also rotatably mounted on the probe holder (15). The rotation plane of the displacement transmission component is a vertical plane. The displacement transmission component has an upper surface and a lower surface that form an angle with each other. The bottom end of the dial indicator rod (9) is in contact with its upper surface, the inner end of the probe (11) is in contact with its lower surface, and the outer end of the probe (11) protrudes laterally from the probe seat (15). When the probe (11) moves laterally and pushes the displacement transmitter to rotate, the upper surface of the displacement transmitter can simultaneously press the dial indicator rod (9) of the dial indicator (1) and make it move vertically.
2. The radial runout detection device for the Class II planetary gear frame hole according to claim 1, characterized in that: The displacement transmission component is a sector lever (12), which is hinged to the probe seat (15). The bottom end of the dial indicator (1) rod (9) is in contact with the upper surface of the sector lever (12), and the inner end of the probe (11) is in contact with the lower surface of the sector lever (12).
3. The radial runout detection device for the Class II planetary gear frame hole according to claim 2, characterized in that: The measuring assembly also includes an adjustment plate (3), which is adjustable up and down and mounted on the base (4). The probe holder (15) is fixedly mounted on one side of the adjustment plate (3).
4. The radial runout detection device for the Class II planetary gear frame hole according to claim 3, characterized in that: The base (4) is also provided with an adjusting cylinder (19), the adjusting cylinder (19) is provided with external threads, and the adjusting plate (3) is screwed onto the adjusting cylinder (19); A compression spring (10) is also fitted on the adjusting cylinder (19), and the compression spring (10) abuts between the adjusting plate (3) and the upper surface of the base (4).
5. The radial runout detection device for the II-stage planetary gear frame hole according to claim 4, characterized in that: It also includes a vertical cylinder (18), whose inner wall is provided with a downward abutting step, and a pressure spring (13) and a push rod (14) are provided inside the vertical cylinder (18). The top rod (14) has a shoulder in the middle, and the pressure spring (13) is fitted on the top rod (14) and abuts against the abutting step and the shoulder; The dial indicator (1) is installed on the top of the vertical cylinder (18) by the clamp nut (2). The rod (9) of the dial indicator (1) is inserted into the vertical cylinder (18) from the top and abuts against the top of the top rod (14). The bottom of the top rod (14) abuts against the upper surface of the fan-shaped lever (12).
6. The radial runout detection device for the II-stage planetary gear frame hole according to any one of claims 1 to 5, characterized in that: An adjusting cylinder (19) is provided in the middle of the base (4); A cavity is formed inside the regulating cylinder (19), and the cavity extends into the base (4); The positioning assembly also includes multiple positioning rods (5), and the base (4) has multiple transverse through holes on its four sides corresponding to the multiple positioning rods (5), with the multiple positioning rods (5) passing through the transverse through holes laterally; The adjusting cylinder (19) is also screwed with a tapered mandrel (6). The bottom of the tapered mandrel (6) is in the shape of an inverted cone or an inverted frustum. When the bottom of the adjusting cylinder (19) moves downward to the positioning rod (5), the bottom of the tapered mandrel (6) can push out multiple positioning rods (5) at the same time.
7. The radial runout detection device for the II-stage planetary gear frame hole according to claim 6, characterized in that: The base (4) also has multiple vertical holes corresponding to the positioning rod (5) at the top, and a vertical through hole is provided in the middle of the positioning rod (5); The positioning assembly also includes multiple limiting pins (17), which can be inserted into the vertical through hole in the middle of the positioning top rod (5) through the vertical hole; When the bottom end of the tapered mandrel (6) is not screwed into the base (4), the positioning top rod (5) can slide left and right a certain distance under the limit of the limiting pin (17).
8. The radial runout detection device for the Class II planetary gear frame hole according to claim 7, characterized in that: The inner end of the positioning rod (5) is provided with an inclined surface that matches the bottom of the tapered mandrel (6), and the outer end of the positioning rod (5) is spherical.
9. The radial runout detection device for the II-stage planetary gear frame hole according to claim 7, characterized in that: A locking nut (7) is screwed onto the upper part of the tapered mandrel (6).
10. The radial runout detection device for the Class II planetary gear frame hole according to claim 6, characterized in that: The base (4) has an annular boss protruding downwards at the bottom. A deep groove ball bearing (16) is sleeved on the outside of the annular boss. The outer ring of the deep groove ball bearing (16) is supported at the bottom end face of the bearing hole (b) of the lower frame to limit the axial movement of the positioning assembly.