Flexspline fixture for gear measuring center

Abstract

The utility model discloses a special flexible wheel clamp for a gear measuring center, comprising a base, a working hole is provided on the base, a sink is provided on the top of the working hole, a first fixed plate and a second fixed plate are provided in the sink; a first pressing arm is provided on the first fixed plate, a first long hole is provided on the first pressing arm, a first pin is slidably connected in the first long hole, and the first pin is fixed on the first fixed plate; a second pressing arm is provided on the second fixed plate, a second long hole is provided on the second pressing arm, a second pin is slidably connected in the second long hole, and the second pin is fixed on the second fixed plate; a connecting rod is provided in the working hole, one end of the connecting rod is hinged at the bottom of the first pressing arm, and the other end is hinged at the bottom of the second pressing arm, a first pressure head is provided on the top of the first pressing arm, and a second pressure head is provided on the top of the second pressing arm; and a lifting mechanism for controlling the connecting rod to move vertically up and down is also included. The flexible wheel clamp is used for clamping the flexible wheel to detect the tooth surface accuracy thereof, and has perfect overall functions and strong practicality.

Description

Technical Field

[0001] The utility model relates to the technical field of measurement and detection, and more specifically, to a special flexible wheel clamp for a gear measurement center. Background Art

[0002] Flexible gears are also called flexible wheels, which are thin-walled cup-shaped, thin-walled cylindrical or flat-embedded. There is a gear ring outside the open end of the thin-walled cylindrical flexible wheel, which deforms with the rotation of the wave generator, and the bottom of the cylinder is connected to the output shaft. Generally, gear transmissions use rigid mechanisms, and the rotating parts are also rigid. Harmonic gear transmission is a new type of transmission that uses the elastic deformation movement of flexible working components to achieve the purpose of transmission. The requirements for the accuracy and finish of the flexible gear mating surface are quite high, so as to ensure sufficiently high efficiency and necessary load capacity, and prevent the possibility of slipping under overload conditions.

[0003] At present, most methods for testing flexible pulleys are to use a customized three-jaw chuck to clamp the inner hole of the flexible pulley for measurement. Due to the structural limitations of the flexible pulley, the upper and lower end faces of the flexible pulley cannot be tested simultaneously after the three-jaw chuck is used to clamp the flexible pulley, and the repeated clamping positioning accuracy of the flexible pulley after the second clamping cannot be guaranteed.

[0004] The utility model aims to provide a flexible wheel clamp for detection, so as to solve the problems proposed in the above background technology that the upper and lower end faces of the flexible wheel cannot be detected simultaneously by using a three-jaw chuck and the positioning accuracy of the flexible wheel after repeated clamping cannot be guaranteed. Utility Model Content

[0005] The utility model aims to overcome the above-mentioned deficiencies in the prior art and provides a special flexible spline clamp for a gear measuring center. The flexible spline clamp is used for clamping the flexible spline to detect the tooth surface accuracy thereof.

[0006] In order to solve the above technical problems, the purpose of the utility model is achieved as follows: the utility model relates to a special flexible wheel clamp for a gear measuring center, comprising a base, a positioning bayonet is provided on the top of the base, a working hole is provided in the center of the base, a sink groove is provided on the top of the working hole, and a first fixing plate and a second fixing plate are arranged on the inner circumference of the sink groove;

[0007] The first fixing plate is provided with a first pressing arm, the first pressing arm is provided with a first long hole, the upper end of the first long hole is away from the axis of the working hole, and the lower end is close to the axis of the working hole, a first pin is slidably connected in the first long hole, and the first pin is fixed to the first fixing plate;

[0008] A second pressing arm is provided on the second fixing plate, and a second long hole is opened on the second pressing arm, the upper end of the second long hole is far away from the axis of the working hole, and the lower end is close to the axis of the working hole, and a second pin shaft is slidably connected in the second long hole, and the second pin shaft is fixed on the second fixing plate;

[0009] A connecting rod is provided in the working hole and is located below the first fixing plate and the second fixing plate, one end of the connecting rod is hinged to the bottom of the first pressing arm, and the other end is hinged to the bottom of the second pressing arm, a first pressing head is provided on the top of the first pressing arm and extends away from the second pressing arm, and a second pressing head is provided on the top of the second pressing arm and extends away from the first pressing arm;

[0010] It also includes a lifting mechanism for controlling the connecting rod to move vertically up and down.

[0011] The utility model is further configured as follows: the lifting mechanism is a camshaft extending radially along the working hole, the camshaft is rotatably connected to the base, at least one end of the camshaft is provided with a driving head arranged outside the base, the camshaft is provided with a cam for following, and the wheel surface of the cam is tightly attached to the connecting rod.

[0012] The utility model is further configured as follows: a set screw with an end portion capable of abutting against a cam is threadedly connected to the connecting rod.

[0013] In summary, the utility model has the following beneficial effects: the special flexible wheel clamp for the gear measuring center involved in the utility model is difficult to clamp during detection due to the special structure of the flexible wheel. The utility model can conveniently load or unload the workpiece flexible wheel when detecting the flexible wheel. Because it has a thin-walled structure at various places, this solution can ensure the clamping accuracy without damaging the flexible wheel. The overall function is perfect and the practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the internal structure of the utility model. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the technical solution of the utility model, the preferred implementation scheme of the utility model is described below in conjunction with specific embodiments, but it should be understood that these descriptions are only for further illustrating the features and advantages of the utility model, rather than limiting the patent requirements of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0017] The utility model is further described below in conjunction with the accompanying drawings and preferred embodiments.

[0018] Example 1

[0019] See also Figures 1 to 3 As shown, a flexible spline fixture for a gear measuring center according to the present embodiment comprises a base 1, a positioning bayonet 2 is provided on the top of the base 1, a working hole 3 is provided in the center of the base 1, a sink 4 is provided on the top of the working hole 3, and a first fixing plate 5 and a second fixing plate 6 are arranged on the inner periphery of the sink 4;

[0020] The first fixing plate 5 is provided with a first pressing arm 7, and the first pressing arm 7 is provided with a first long hole 8, the upper end of the first long hole 8 is far away from the axis of the working hole 3, and the lower end is close to the axis of the working hole 3, and a first pin shaft 9 is slidably connected in the first long hole 8, and the first pin shaft 9 is fixed on the first fixing plate 5;

[0021] The second fixing plate 6 is provided with a second pressing arm 10, and the second pressing arm 10 is provided with a second long hole 11, the upper end of the second long hole 11 is far away from the axis of the working hole 3, and the lower end is close to the axis of the working hole 3, and a second pin shaft 12 is slidably connected in the second long hole 11, and the second pin shaft 12 is fixed on the second fixing plate 6;

[0022] A connecting rod 13 is provided in the working hole 3 and is located below the first fixing plate and the second fixing plate. One end of the connecting rod is hinged to the bottom of the first pressing arm 7, and the other end is hinged to the bottom of the second pressing arm 10. A first pressing head 14 is provided on the top of the first pressing arm 7 and extends away from the second pressing arm 10. A second pressing head 15 is provided on the top of the second pressing arm 10 and extends away from the first pressing arm 7.

[0023] It also includes a lifting mechanism for controlling the connecting rod 13 to move vertically up and down.

[0024] Furthermore, the lifting mechanism has a camshaft 16 extending radially along the working hole 3, the camshaft 16 is rotatably connected to the base 1, at least one end of the camshaft 16 is provided with a driving head 17 arranged outside the base 1, and the camshaft 16 is provided with a cam 18 for follow-up, and the wheel surface of the cam 18 is tightly attached to the connecting rod 13.

[0025] In this embodiment, when the workpiece flexible wheel 100 is to be loaded, the connecting rod 13 is in the lower position. At this time, the first pressing head 14 and the second pressing head 15 are close to each other for loading. The wheel hole 101 on the workpiece flexible wheel 100 can be sleeved outside the first pressing head 14 and the second pressing head 15. One end face of the workpiece flexible wheel 100 is axially positioned by the positioning bayonet 2. The driving head 17 is pulled, and the camshaft 16 rotates, driving the cam 18 to rotate. As the cam rotates, the connecting rod 13 moves upward. When the connecting rod 13 moves upward, the first pressing arm 7 and the second pressing arm 10 slide along the corresponding long hole. Since the long hole has a certain inclination angle, the first pressing arm 7 and the second pressing arm 10 will rotate around the pin shaft to the first pressing head 14 and the second pressing head 15. The first pressing head 14 and the second pressing head 15 clamp the bottom of the workpiece flexible wheel 100. Conversely, the camshaft 16 can be rotated until the connecting rod 13 is reset.

[0026] Example 2

[0027] See also Figures 1 to 3 As shown, the present embodiment involves a special flexible spline clamp for a gear measuring center, which is further configured on the basis of the first embodiment, wherein a set screw 19 whose end can abut against a cam 18 is threadedly connected to the connecting rod 13 .

[0028] In this embodiment, the set screw 19 is provided to lock the position state between the connecting rod 13 and the cam 18 during the adjustment process.

[0029] The special flexible wheel clamp for the gear measuring center involved in the utility model is difficult to clamp during detection due to the special structure of the flexible wheel. The utility model can conveniently load or unload the workpiece flexible wheel when detecting the flexible wheel. Because it has a thin-walled structure at various places, this solution can ensure the clamping accuracy without damaging the flexible wheel. The overall function is perfect and the practicability is strong.

[0030] Unless otherwise specified, in the present invention, the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicating orientation or positional relationship are based on the orientation or positional relationship actually shown, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present invention are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood in combination with the embodiments and according to specific circumstances.

[0031] Unless otherwise clearly specified and limited, in the present invention, the terms "disposed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A special flexible wheel fixture for a gear measuring center includes a base, a positioning bayonet is provided on the top of the base, and the characteristics are: A working hole is provided in the center of the base, a sink groove is provided at the top of the working hole, and a first fixing plate and a second fixing plate are arranged on the inner periphery of the sink groove; The first fixing plate is provided with a first pressing arm, the first pressing arm is provided with a first long hole, the upper end of the first long hole is away from the axis of the working hole, and the lower end is close to the axis of the working hole, a first pin is slidably connected in the first long hole, and the first pin is fixed to the first fixing plate; A second pressing arm is provided on the second fixing plate, and a second long hole is opened on the second pressing arm, the upper end of the second long hole is far away from the axis of the working hole, and the lower end is close to the axis of the working hole, and a second pin shaft is slidably connected in the second long hole, and the second pin shaft is fixed on the second fixing plate; A connecting rod is provided in the working hole and is located below the first fixing plate and the second fixing plate, one end of the connecting rod is hinged to the bottom of the first pressing arm, and the other end is hinged to the bottom of the second pressing arm, a first pressing head is provided on the top of the first pressing arm and extends away from the second pressing arm, and a second pressing head is provided on the top of the second pressing arm and extends away from the first pressing arm; It also includes a lifting mechanism for controlling the connecting rod to move vertically up and down; the lifting mechanism includes a camshaft extending along the radial direction of the working hole, the camshaft is rotatably connected to the base, at least one end of the camshaft is provided with a driving head arranged outside the base, the camshaft is provided with a cam for following movement, and the wheel surface of the cam is closely attached to the connecting rod; The connecting rod is threadedly connected with a set screw whose end can abut against the cam.

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