Gear measuring tool

Abstract

The utility model discloses a gear measuring tool which comprises a measuring platform arranged on a base plate, a liftable pressing plate is arranged above the measuring platform, one end of the base plate is provided with a rack, the bottom of the rack is provided with a distance measuring sensor facing the measuring platform, the center of the measuring platform is provided with a positioning hole, and the distance measuring sensor is arranged in the positioning hole. A positioning hole is formed in the rack, a switching mechanism is arranged below the measuring platform, the switching mechanism comprises a positioning column located below the positioning hole and a rotating frame coaxially connected with a servo motor, the positioning column is connected with the rotating frame through a lifting assembly, and a control panel is installed on the rack. According to the utility model, through the arrangement of the substrate, the rack, the distance measuring sensor, the pressing plate and the measuring platform, the overall structure is simplified, the difficulty of later maintenance is reduced, through the arrangement of the positioning holes and the switching mechanism, the effect of switching different positioning columns is achieved so as to adapt to gears with center holes of different sizes, the use is flexible, and the adjustment is convenient.

Description

Technical Field

[0001] This utility model relates to the field of gear testing tooling technology, and in particular to a gear measuring tooling. Background Technology

[0002] During gear manufacturing, the thickness needs to be measured. An existing patent (publication number: CN216668606U) discloses a gear measuring fixture. This invention uses a detection sensor, a lifting module, and a control module. The detection sensor determines whether the gear to be measured is in position, and the lifting module moves downwards. By combining the lifting module's movement speed, the detection sensor's sensing time, and the distance to the pressure plate, the thickness value of the gear can be obtained, improving detection accuracy. However, in the aforementioned invention, the optical module is a redundant structure, neither assisting in the detection distance nor improving detection accuracy, increasing complexity without providing practical functionality, and raising the difficulty of later maintenance. Therefore, we propose a gear measuring fixture. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a gear measuring fixture.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] Design a gear measuring fixture, including a measuring platform mounted on a base plate, a liftable pressure plate above the measuring platform, a frame mounted at one end of the base plate, a distance sensor facing the measuring platform mounted at the bottom of the frame, a positioning hole at the center of the measuring platform, and a switching mechanism below the measuring platform. The switching mechanism includes a positioning column located below the positioning hole and a rotating frame coaxially connected to a servo motor. The positioning column is connected to the rotating frame via a lifting assembly, and a control panel is mounted on the frame.

[0006] In the above scheme, a column is fixed between the bottom of the measuring platform and the base plate.

[0007] In the above scheme, a cylinder with its stroke end downward connected to the pressure plate is installed on the top of the frame.

[0008] In the above scheme, at least two support rods are fixed at the bottom of the rotating frame, and a guide rail that cooperates with the support rods is fixed at the top of the base plate.

[0009] In the above scheme, the positioning columns are evenly arranged on the edge of the rotating frame, and the lifting assembly includes an electric push rod installed at the bottom of the rotating frame. The stroke end of the electric push rod is connected to a lifting plate for supporting the positioning columns.

[0010] In the above scheme, a stud is fixed on the top of the lifting plate, and a threaded groove that mates with the stud is opened at the bottom end of the positioning column.

[0011] In the above scheme, a photoelectric sensor is installed at the top of the positioning post.

[0012] The advantages and beneficial effects of this utility model are as follows: By setting up a base plate, frame, distance sensor, pressure plate, and measuring platform, the gear is placed horizontally on the measuring platform. Then, by lowering the pressure plate, the gear is pressed tightly onto the measuring platform. With the help of the distance sensor, the distance between the top of the frame and the upper surface of the gear is detected. Combined with the fixed distance between the top of the frame and the measuring platform, the gear thickness can be accurately obtained. Compared with the prior art, the gear thickness is directly measured by distance measurement, which further simplifies the overall structure and reduces the difficulty of later maintenance. By setting up positioning holes and switching mechanisms, the electric push rod is extended, causing the lifting plate to rise, and then the positioning pin enters the positioning hole to cooperate with the positioning gear and limit the gear, effectively preventing the gear from shifting during the measurement process and further improving the stability of the gear. Compared with the prior art, the use of a servo motor to rotate the rotating frame achieves the effect of switching different positioning pins to adapt to gears with different sized center holes, making it flexible to use and easy to adjust. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of a gear measuring fixture proposed in this utility model;

[0015] Figure 2 This is a schematic diagram of the switching mechanism of a gear measuring fixture proposed in this utility model;

[0016] Figure 3 This is a schematic diagram of the assembly structure of the lifting plate and positioning column of a gear measuring fixture proposed in this utility model.

[0017] In the diagram: 1. Base plate; 2. Frame; 3. Measuring platform; 4. Column; 5. Cylinder; 6. Pressure plate; 7. Distance sensor; 8. Positioning hole; 9. Switching mechanism; 91. Rotating frame; 92. Lifting plate; 921. Stud; 93. Positioning column; 931. Threaded groove; 94. Photoelectric sensor; 95. Servo motor; 96. Electric push rod; 97. Support rod; 98. Guide rail; 10. Control panel. Detailed Implementation

[0018] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0019] Please see Figure 1-3 The present invention provides a technical solution: a gear measuring fixture, including a measuring platform 3 set on a base plate 1, which can be used manually or by an external robotic arm to place the gear to be measured on the measuring platform 3, and a liftable pressure plate 6 is provided above the measuring platform 3;

[0020] Furthermore, a cylinder 5 with its stroke end pointing downwards and connected to the pressure plate 6 is installed on the top of the frame 2; such as Figure 1 As shown, the pressure plate 6 has a symmetrical structure, wherein the piston rod of the cylinder 5 is connected to the middle of the pressure plate 6;

[0021] A frame 2 is mounted on one end of the base plate 1. The frame 2 is L-shaped. A distance sensor 7 facing the measuring platform 3 is mounted on the bottom of the frame 2. When no gear is placed on the measuring platform 3, the distance sensor 7 measures the distance between the top of the frame 2 and the measuring platform 3.

[0022] Specifically, by setting up a base plate 1, a frame 2, a distance sensor 7, a pressure plate 6, and a measuring platform 3, the gear is placed horizontally on the measuring platform 3. Then, by lowering the pressure plate 6, the gear is pressed tightly onto the measuring platform 3. In conjunction with the distance sensor 7, the distance between the top of the frame 2 and the upper surface of the gear is detected. Combined with the fixed distance between the top of the frame 2 and the measuring platform 3, the thickness of the gear can be accurately obtained. Compared with the existing technology, the thickness of the gear can be directly measured by distance measurement, which further simplifies the overall structure and reduces the difficulty of later maintenance.

[0023] The measuring platform 3 has a positioning hole 8 in the center and a switching mechanism 9 is provided below the measuring platform 3. The switching mechanism 9 includes a positioning post 93 located below the positioning hole 8 and a rotating frame 91 coaxially connected to a servo motor 95. The servo motor 95 is mounted on the base plate 1 through a support.

[0024] Specifically, in order to further limit the position of the gear under test, a positioning pin 93 that matches the center hole of the gear under test is inserted into the positioning hole 8, so that the gear under test is fitted onto the corresponding positioning pin 93 and is limited.

[0025] Furthermore, at least two support rods 97 are fixed at the bottom of the rotating frame 91, and a guide rail 98 that cooperates with the support rods 97 is fixed at the top of the base plate 1; the stability of the rotating frame 91 is improved by utilizing the cooperation between the support rods 97 and the guide rail 98.

[0026] Positioning column 93 is connected to rotating frame 91 via lifting assembly;

[0027] Furthermore, the positioning pins 93 are evenly arranged on the edge of the rotating frame 91. The radii of the positioning pins 93 at different positions are different and are matched with the center holes of the gears in different batches. The lifting assembly includes an electric push rod 96 installed at the bottom of the rotating frame 91. The end of the electric push rod 96 is connected to a lifting plate 92 for supporting the positioning pins 93.

[0028] Furthermore, a stud 921 is fixed to the top of the lifting plate 92, and a threaded groove 931 that mates with the stud 921 is provided at the bottom of the positioning post 93; by rotating the positioning post 93, the stud 921 is connected to the threaded groove 931, thereby completing the assembly of the positioning post 93 and the lifting plate 92.

[0029] Furthermore, a column 4 is fixed between the bottom of the measuring platform 3 and the base plate 1;

[0030] Specifically, the column 4 is positioned away from the rotating frame 91 to prevent affecting the rotation of the rotating frame 91.

[0031] Furthermore, a photoelectric sensor 94 is installed at the top of the positioning column 93; by using the photoelectric sensor 94, it is possible to better cooperate with the external robotic arm to achieve the purpose of precise assembly of the gear to be tested and the measuring platform 3;

[0032] Specifically, by setting a positioning hole 8 and a switching mechanism 9, the electric push rod 96 is extended, causing the lifting plate 92 to rise, and the positioning pin 93 to enter the positioning hole 8 to cooperate with the positioning gear and limit the gear, effectively preventing the gear from shifting during the measurement process and further improving the stability of the gear. Compared with the existing technology, the servo motor 95 is used to rotate the rotating frame 91, thereby achieving the effect of switching different positioning pins 93 to adapt to gears with different sized center holes, making it flexible to use and easy to adjust.

[0033] A control panel 10 is installed on the frame 2; a control box is located on the rear side of the control panel 10, and a control module is located inside the control box. The control panel 10 is equipped with a display screen and operation buttons. The servo motor 95, cylinder 5, electric push rod 96 and distance sensor 7 are all connected to the control module. The data detected by the distance sensor 7 is transmitted to the control module for calculation, and the final result is transmitted to the display screen for output, so as to intuitively obtain the gear thickness data.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A gear measuring fixture, comprising a measuring platform (3) disposed on a base plate (1), characterized in that, The measuring platform (3) is provided with a liftable pressure plate (6) above it. A frame (2) is installed at one end of the base plate (1). A distance sensor (7) facing the measuring platform (3) is installed at the bottom of the frame (2). A positioning hole (8) is opened in the center of the measuring platform (3). A switching mechanism (9) is provided below the measuring platform (3). The switching mechanism (9) includes a positioning column (93) located below the positioning hole (8) and a rotating frame (91) coaxially connected to a servo motor (95). The positioning column (93) is connected to the rotating frame (91) through a lifting assembly. A control panel (10) is installed on the frame (2).

2. The gear measuring fixture according to claim 1, characterized in that, A column (4) is fixed between the bottom of the measuring platform (3) and the base plate (1).

3. The gear measuring fixture according to claim 1, characterized in that, The top of the frame (2) is equipped with a cylinder (5) whose stroke end is connected downward to the pressure plate (6).

4. The gear measuring fixture according to claim 1, characterized in that, The bottom of the rotating frame (91) is fixed with at least two support rods (97), and the top of the base plate (1) is fixed with a guide rail (98) that cooperates with the support rods (97).

5. A gear measuring fixture according to claim 1, characterized in that, The positioning posts (93) are evenly arranged on the edge of the rotating frame (91). The lifting assembly includes an electric push rod (96) installed at the bottom of the rotating frame (91). The end of the electric push rod (96) is connected to a lifting plate (92) for supporting the positioning posts (93).

6. A gear measuring fixture according to claim 5, characterized in that, The top of the lifting plate (92) is fixed with a stud (921), and the bottom of the positioning column (93) is provided with a threaded groove (931) that mates with the stud (921).

7. A gear measuring fixture according to claim 1, characterized in that, A photoelectric sensor (94) is installed at the top of the positioning post (93).

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