Self-centering elastic belt drive for measuring center

Abstract

The utility model discloses a kind of self-centering elastic belt drives special for measuring center, including lower center and upper center, lower center is sleeved with centering body, the upper end of centering body has centering inner ring, centering inner ring is equipped with the centering outer ring that rotates and connects on centering body, the outer side of centering outer ring is excavated with several inclined grooves, the groove bottom of inclined groove has guide slope face, the groove bottom of inclined groove is provided with the limiting hole that is penetrated along radial centering outer ring, mounting hole is opened on centering inner ring, bushing is embedded in mounting hole, ball lock pin is penetrated in bushing with relative axial movement, one end of ball lock pin is extended towards the axis of centering inner ring, another end has ball head portion arranged in inclined groove, ball lock pin is also slidably connected in limiting hole, ball lock pin and bushing are equipped with movable baffle connected with ball lock pin, fixed baffle connected with bushing, ball lock pin is sleeved with elastic member. The drive has self-centering function, and the clamping of workpiece can be quickly realized.

Description

Technical Field

[0001] This utility model relates to the field of measuring equipment technology, and more specifically, it relates to a self-centering elastic actuator for measuring centers. Background Technology

[0002] Drives are widely used in measuring centers. When inspecting shaft-type workpieces, the center drives the workpiece to rotate. However, because the contact area between the center hole and the center on most shaft-type workpieces is too small, slippage or loss of rotation is common, severely affecting the measurement operation. Therefore, using a drive to clamp the workpiece can prevent this from happening. Accordingly, this invention proposes a self-centering elastic drive specifically for measuring centers. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a self-centering elastic actuator for measuring centers. This actuator has a self-centering function and can quickly clamp the workpiece.

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is achieved as follows: This utility model relates to a self-centering elastic actuator specifically for measuring centers, comprising a lower center and an upper center arranged coaxially. A centering body is fitted onto the lower center and held relatively fixed. The upper end of the centering body has a centering inner ring, and an outer centering ring is rotatably connected to the centering body outside the inner ring. The outer surface of the outer centering ring has several inclined grooves arranged in a circular array around the axis. The bottom of the inclined grooves has a guide slope extending tangentially along the outer ring. A radially penetrating... A limiting hole extends circumferentially through the outer centering ring. The inner centering ring has mounting holes that extend radially and match the inclined grooves one by one. A bushing is embedded in the mounting hole. A ball-head locking pin that moves axially through the bushing is inserted into the bushing. One end of the ball-head locking pin extends towards the axis of the inner centering ring, and the other end has a ball head located in the inclined groove. The ball-head locking pin is also slidably connected in the limiting hole. A movable baffle connected to the ball-head locking pin and a fixed baffle connected to the bushing are provided between the ball-head locking pin and the bushing. An elastic element with one end abutting against the movable baffle and the other end abutting against the fixed baffle is sleeved on the ball-head locking pin.

[0005] The present invention is further configured such that: a locking screw with its end abutting against the lower center point is threaded onto the centering body.

[0006] The present invention is further configured such that the included angle between two adjacent inclined grooves is equal.

[0007] The present invention is further configured such that the fixing baffle and the bushing are integrated, and the bushing is a copper bushing.

[0008] The present invention is further configured such that the elastic element is a compression spring.

[0009] In summary, the present invention has the following beneficial effects: The self-centering elastic actuator for measuring centers involved in the present invention can fix the workpiece by rotating the outer ring of the centering ring at a small angle relative to the inner ring of the centering ring. It can quickly clamp the workpiece, has high centering accuracy, and has elastic clamping characteristics. It has complete functions and strong practicality. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0011] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0012] Figure 3 yes Figure 2 Enlarged structural diagram of section A in the middle;

[0013] Figure 4 This is a partial structural schematic diagram of the present invention. Detailed Implementation

[0014] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of this utility model, and not for limiting the patent claims of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0015] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0016] Example 1

[0017] See Figures 1 to 4As shown, this embodiment involves a self-centering elastic actuator for a measurement center, comprising a lower center 1 and an upper center 2 arranged coaxially. A centering body 3, which is relatively fixed, is fitted onto the lower center 1. The upper end of the centering body 3 has a centering inner ring 4, and a centering outer ring 5 rotatably connected to the centering body is provided outside the centering inner ring 4. The outer surface of the centering outer ring 5 has six inclined grooves 6 arranged in a ring array at equal intervals around the axis. The bottom of the inclined grooves 6 has a guide slope 7 extending tangentially along the centering outer ring. The bottom of the inclined grooves 6 has a limiting hole 8 that penetrates the centering outer ring radially and extends circumferentially. The inner ring 4 has mounting holes (unmarked) that extend radially and match the inclined grooves one by one. A bushing 9 is embedded in the mounting hole, and a ball head locking pin 10 that moves axially relative to the bushing 9 passes through the bushing 9. One end of the ball head locking pin 10 extends towards the axis of the centering inner ring, and the other end has a ball head 11 located in the inclined groove. The ball head locking pin 10 is also slidably connected in the limiting hole 8. A movable baffle 12 connected to the ball head locking pin and a fixed baffle 13 connected to the bushing are provided between the ball head locking pin 10 and the bushing 9. An elastic element 14, which is a compression spring, is fitted on the ball head locking pin 10, with one end abutting against the movable baffle and the other end abutting against the fixed baffle.

[0018] Furthermore, the centering body 3 is threadedly connected with a locking screw 15 whose end abuts against the lower center point 1.

[0019] Furthermore, the fixed baffle 13 and the bushing 9 are integrated, and the bushing 9 is a copper bushing.

[0020] In this embodiment, the lower center is the active rotating body and the upper center is the passive rotating body. When the workpiece is mounted on the two centers, it is driven to rotate by the friction of the contact surface of the centers. However, it often fails to rotate or loses rotation. Therefore, this utility model designs a fixture that can drive the workpiece to rotate.

[0021] The centering clamping principle is as follows: In the initial state, the ball head 11 is located at the outermost end of the guide slope 7. At this time, the ball head locking pin 10 does not abut against the workpiece, and the elastic element 14 is compressed. By rotating the centering outer ring 5 relative to the centering inner ring 4, the ball head locking pin 10 moves circumferentially within the limiting hole 8. At the same time, the ball head locking pin 10 also moves axially relative to the bushing 9. When the ball head 11 moves from the outermost end to the innermost end of the guide slope 7, the elastic element 14 deforms and resets, pushing the movable baffle 12, causing the movable baffle 12 to drive the ball head locking pin 10 to move axially until the end abuts against the workpiece, thus completing the centering clamping of the workpiece.

[0022] The locking screw 15 is used to connect the lower tip 1 and the centering body 3.

[0023] The self-centering elastic actuator for measuring centers involved in this utility model can fix the workpiece by rotating the outer centering ring at a small angle relative to the inner centering ring. It can quickly clamp the workpiece, has high centering accuracy, and has elastic clamping characteristics. It has complete functions and strong practicality.

[0024] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the actual orientation or positional relationship shown. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the embodiments and according to the specific circumstances.

[0025] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A self-centering elastic actuator for measuring centers, comprising a lower center and an upper center arranged coaxially, characterized in that: A centering body is fitted onto the lower center point and kept relatively fixed. The upper end of the centering body has a centering inner ring, and a centering outer ring is rotatably connected to the centering body outside the centering inner ring. The outer surface of the centering outer ring has several inclined grooves arranged in a circular array around an axis. The bottom of the inclined grooves has a guide slope extending tangentially to the centering outer ring. A limiting hole is formed at the bottom of the inclined groove, penetrating the centering outer ring radially and extending circumferentially. A radially extending and… The mounting holes are matched one-to-one with the inclined grooves. Bushings are embedded in the mounting holes, and ball-head locking pins that can move axially are inserted through the bushings. One end of the ball-head locking pin extends towards the axis of the centering inner ring, and the other end has a ball head provided in the inclined groove. The ball-head locking pin is also slidably connected in the limiting hole. A movable baffle connected to the ball-head locking pin and a fixed baffle connected to the bushing are provided between the ball-head locking pin and the bushing. An elastic element with one end abutting against the movable baffle and the other end abutting against the fixed baffle is sleeved on the ball-head locking pin.

2. The self-centering elastic actuator for measurement centers according to claim 1, characterized in that: The centering body is threaded with a locking screw whose end abuts against the lower center point.

3. The self-centering elastic actuator for measurement centers according to claim 1 or 2, characterized in that: The included angle between two adjacent inclined slots is equal.

4. The self-centering elastic actuator for measurement centers according to claim 3, characterized in that: The fixing baffle and the bushing are integrated, and the bushing is a copper bushing.

5. The self-centering elastic actuator for measurement centers according to claim 1, characterized in that: The elastic element is a compression spring.

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