CN210829996U

CN210829996U - High-precision mechanical locking device for rotary table

Info

Publication number: CN210829996U
Application number: CN201921436135.7U
Authority: CN
Inventors: 张长清; 张及猛; 余沛; 陈盼盼; 董桃云
Original assignee: Jiujiang Precision Measuring Technology Research Institute
Current assignee: Jiujiang Precision Measuring Technology Research Institute
Priority date: 2019-09-01
Filing date: 2019-09-01
Publication date: 2020-06-23
Anticipated expiration: 2029-09-01

Abstract

The utility model discloses a high accuracy revolving stage mechanical locking device to the revolving stage mechanical locking positioning accuracy of solution is not high, poor stability, easy wearing and tearing technical problem such as life weak point. The mechanical locking device comprises a locking pin, a rotating frame, a bead, a cover plate, a bead seat, a guide bead frame and a base; the mechanical locking device is simple in structure, convenient to operate, high in locking precision, good in stability, not prone to abrasion, long in service life and capable of overcoming the defects of the prior art.

Description

High-precision mechanical locking device for rotary table

Technical Field

The utility model relates to a can wide application in high accuracy mechanical locking device of revolving stage equipment.

Background

The gyros and the accelerometers often need only to be calibrated at specific positions during the calibration process, such as 0 °, 90 °, 180 °, 270 °, and the like. In this case, a set of turning tools is generally used for calibration. The electric turnover tool can achieve high positioning accuracy, but the electric turnover tool is large in size, heavy in weight and particularly high in cost, so that a purely mechanical locking mode is often adopted. The pin-pin hole structure is the most common locking mode in the inertia test equipment, however, with the rapid development of the inertia navigation, the traditional pin-pin hole structure cannot meet the calibration requirement of the inertia unit. The bolt and the pin hole of the traditional bolt-pin hole structure are easy to wear, the positioning precision is low, the stability is poor, and the service life is short.

The utility model discloses optimize on the basis of traditional bolt-pinhole structure, the pinhole adopts the design of dense pearl guide structure, its simple structure, convenient operation, and the locking precision is high, and stability is good to difficult wearing and tearing, long service life has overcome the not enough of prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high accuracy revolving stage mechanical locking device has solved technical problem such as current revolving stage mechanical locking positioning accuracy is not high, poor stability, easy wearing and tearing life weak point.

The technical scheme adopted for achieving the purpose is that the high-precision mechanical locking device for the rotary table comprises a locking pin (1), a rotary frame (2), a dense ball (3), a cover plate (4), a dense ball seat (5), a guiding dense ball frame (6) and a base (7); it is characterized in that the preparation method is characterized in that,

the pin structure adopts a thread rotation mode, namely the locking pin (1) is in thread connection with the rotating frame (2), and the locking pin moves up and down through the rotation of the locking pin thread. In addition, the pin hole adopts a dense bead guide structure, namely dense beads (3) of the same type and specification are placed in a honeycomb hole of a guide dense bead frame (6), are integrally installed in a dense bead seat (5) to form a dense bead guide structure, and are finally fixed in a base (7) hole.

The utility model has the beneficial technical effects that:

compared with the prior art, the utility model has the following advantages.

The utility model has the advantages that: the locking mechanism is simple in structure, convenient to operate, high in locking precision, good in stability, not prone to abrasion and long in service life.

Drawings

The present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a structural sectional view of the present invention;

fig. 2 is a perspective view of the device.

Shown in the figure: 1. the device comprises a locking pin, 2 parts of a rotating frame, 3 parts of a ball, 4 parts of a cover plate, 5 parts of a ball seat, 6 parts of a guide ball frame and 7 parts of a base;

Detailed Description

The following description of the embodiments will help the public to understand the present invention, but the specific embodiments given by the applicant should not be considered as limiting the technical solution of the present invention, and any changes in the definition of the components or technical features and/or in the form of the overall structure rather than substantial changes should be considered as the protection scope defined by the technical solution of the present invention.

Example (b):

as shown in fig. 1 and fig. 2, the present embodiment is used for designing a mechanical locking device of a turntable, and the device includes a locking pin (1), a rotating frame (2), a dense bead (3), a cover plate (4), a dense bead seat (5), a guiding dense bead frame (6), and a base (7);

1. the pin structure adopts a thread rotation mode, namely the locking pin (1) is connected with the rotating frame (2) through threads, and the locking pin moves up and down through the rotation of the locking pin threads;

2. the pin hole adopts a dense bead guide structure, namely dense beads (3) with the same type and specification are placed in a honeycomb hole of a guide dense bead frame (6), are integrally arranged in a dense bead seat (5) to form a dense bead guide structure, and are finally fixed in a hole of a base (7);

3. the locking pin (1) is prepared with the dense beads (3) and the dense bead seats (5) in interference fit, and the interference magnitude reaches 0.01-0.015 mm;

4. after rotating frame (2) rotated the position round base (7), made the fitting pin get into dense pearl guide structure through clockwise rotatory fitting pin, because fitting pin and dense pearl guiding hole adopt interference fit, consequently can realize the mechanical locking precision of second level.

5. The locking pin is released anticlockwise, moves upwards and exits from the dense ball guide hole, so that the rotating frame can rotate around the base.

6. The pin hole adopts the design of dense bead guide structure, and the lockpin can easily insert and withdraw from through the rotation of the dense bead in the dense bead guide structure, has also reduced the wearing and tearing of lockpin simultaneously. Thereby well solving the technical difficulties of difficult locking, abrasion and the like caused by interference fit.

7. The device has simple and reliable structure and convenient operation.

Claims

1. A high-precision mechanical locking device for a rotary table comprises a locking pin (1), a rotary frame (2), a dense ball (3), a cover plate (4), a dense ball seat (5), a guide dense ball frame (6) and a base (7); the method is characterized in that: the rotating frame (2) can rotate around the base (7), the locking pin (1) is connected with the rotating frame (2) through threads, a dense ball guide structure is installed in a hole of the base (7), and after the rotating frame (2) rotates around the base (7) to a designated position, the locking pin (1) and the dense ball guide structure assembly can be matched for efficient locking.

2. A high precision mechanical locking device for turntable according to claim 1, characterized by: the tail end of the locking pin is designed into a straight knurling, the middle section of the locking pin adopts a threaded structure, and the topmost end of the locking pin is designed into a cylindrical pin structure.

3. A high precision mechanical locking device for turntable according to claim 1, characterized by: the locking pin hole adopts dense bead guide structure, and dense bead guide structure includes dense bead (3), direction dense bead frame (6) and dense bead seat (5), and dense bead places in the honeycomb hole of direction dense bead frame to integral erection forms a dense bead guide structure in dense bead seat and fixes downtheholely at the base.

4. A high precision mechanical locking device for turntable according to claim 1, characterized by: after the rotating frame rotates to the designated position, the locking pin moves up and down through the rotation of the threads on the rotating locking pin, so that the locking pin and the pin hole are locked and loosened, the locking pin is matched with the dense bead seat and the dense bead seat, interference fit is adopted, and the interference magnitude is within 0.01-0.015 mm.