CN213614321U

CN213614321U - Drilling machine positioning fixture

Info

Publication number: CN213614321U
Application number: CN202020942743.1U
Authority: CN
Inventors: 王弘阳
Original assignee: Wuxi Xinhongcheng Automation Technology Co ltd
Current assignee: Wuxi Xinhongcheng Automation Technology Co ltd
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2021-07-06
Anticipated expiration: 2030-05-29

Abstract

The utility model discloses a drill positioning clamp, which consists of a mounting seat, a chuck device, a driving device, a supporting device and a locking device; the chuck device in the utility model is of a lever structure, the fulcrum of the lever structure is the axis position of the central shaft, and larger clamping force can be provided according to the actual working condition requirement through the lever structure; the arc-shaped compression bar has a simple structure, presents a cantilever beam structure and is suitable for clamping workpieces with different shapes; the clamping force is from a worm and gear structure (the sector gear 9 is equivalent to a worm gear), has better self-locking performance, and further replaces a common clamping force retaining device in the prior art.

Description

Drilling machine positioning fixture

Technical Field

The utility model belongs to the technical field of machinery, a drilling machine positioning fixture is related to.

Background

With the continuous improvement of machine tool technology, a large number of machine tool clamps appear, but the current machine tool clamps have complex structures and complex operation, and the accuracy of clamping and positioning a workpiece is to be improved.

SUMMERY OF THE UTILITY MODEL

In order to solve the shortcoming that prior art exists, the utility model discloses a drilling machine positioning fixture. The utility model adopts the technical scheme as follows: a drill positioning clamp comprises a mounting seat, a chuck device, a driving device, a supporting device and a locking device; the device is characterized in that a lower bottom plate of the supporting device is fixed on the mounting base through a locking device; the chuck device comprises an arc-shaped pressure rod, a circular turntable, a sector gear, a lower end bearing seat and an upper end bearing seat, wherein one side of the circular turntable is fixedly connected with the arc-shaped pressure rod, the other side of the circular turntable is fixedly connected with the sector gear, the sector gear is provided with meshing teeth, a circular through hole is formed in the circular turntable, a first bearing is arranged in the circular through hole, and the first bearing is a sliding bearing; the driving device is a worm, two ends of the worm are of smooth cylindrical structures, the middle part of the worm is of a threaded structure, and the threaded structure is meshed with the meshing teeth on the sector gear; one end of the worm is provided with a blind hole, the inner circumferential surface of the blind hole is provided with a spline, and the worm can be driven to rotate by connecting a driving mechanism; two ends of the driving device are rotatably supported on the chuck device through a lower end bearing seat and an upper end bearing seat, a second bearing is arranged in the upper end bearing seat, and one end of the driving device is arranged in the second bearing; the supporting structure comprises a lower bottom plate, a side plate, a lower end bearing seat, an upper end bearing seat and a central shaft; the central shaft is matched with the sliding bearing, so that the rotating disc can perform pivoting motion relative to the supporting device around the central shaft;

preferably: the number of the locking devices is two, the locking devices are uniformly distributed at four corners of the bottom plate, and each locking device is composed of a bolt and a nut;

preferably: the thread structure is a rectangular thread;

preferably: the first bearing is a sliding bearing.

Has the advantages that: (1) the chuck device in the utility model is a lever structure, the fulcrum of the lever structure is the axis position of the central shaft 11, and larger clamping force can be provided according to the actual working condition requirement through the lever structure; (2) the arc-shaped pressure lever has a simple structure and presents a cantilever beam structure, and when the structure of the workpiece 17 is complex and a clamping point is not easy to find, the arc-shaped pressure lever of the cantilever beam structure is easy to extend into a proper clamping position of the workpiece 17 and is suitable for clamping workpieces with different shapes; (3) the clamp force derives from the worm gear structure (sector gear 9 is equivalent to the worm wheel), and the worm gear structure has great drive ratio, also has better self-locking performance simultaneously, after carrying out work piece 17's the operation that compresses tightly through the rotation of drive worm 14, can not lead to the not hard up of work piece 17 because of the disconnection of drive power, and the drive structure of worm gear is in promptly the utility model discloses in having acted as the effect of the one-way transmission of moment, and then also replaced common clamping-force keeper among the prior art.

Drawings

FIG. 1 is a front view of the overall structure of the present invention;

in the figure: the device comprises a mounting seat 1, an arc-shaped compression bar 2, a lower bottom plate 3, a lower end bearing seat 4, an upper end bearing seat 5, a second bearing 6, a blind hole 7, a thread structure 8, a sector gear 9, meshing teeth 10, a central shaft 11, a first bearing 12, a circular rotary table 13, a worm 14, a bolt 15, a nut 16, a workpiece 17 and a side plate 18.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

Fig. 1 is a specific embodiment of the present invention, which is a drill positioning fixture, comprising a mounting base 1, a chuck device, a driving device, a supporting device, and a locking device; the device is characterized in that a lower bottom plate 3 of the supporting device is fixed on an installation seat 1 through a locking device; the chuck device comprises an arc-shaped pressure lever 2, a circular rotary table 13, a sector gear 9, a lower end bearing seat 4 and an upper end bearing seat 5, wherein one side of the circular rotary table 13 is fixedly connected with the arc-shaped pressure lever 2, the other side of the circular rotary table 13 is fixedly connected with the sector gear 9, the sector gear 9 is provided with meshing teeth 10, a circular through hole is formed in the circular rotary table 13, a first bearing 12 is arranged in the circular through hole, and the first bearing 12 is a sliding bearing; the driving device is a worm 14, two ends of the worm 14 are of smooth cylindrical structures, the middle part of the worm 14 is a thread structure 8, and the thread structure 8 is meshed with the meshing teeth 10 on the sector gear 9; one end of the worm 14 is provided with a blind hole 7, the inner circumferential surface of the blind hole 7 is provided with a spline, and the worm 14 can be driven to rotate by connecting a driving mechanism; two ends of the driving device are rotatably supported on the chuck device through a lower end bearing seat 4 and an upper end bearing seat 5, a second bearing 6 is arranged in the upper end bearing seat 5, and one end of the driving device is arranged in the second bearing 6; the supporting structure comprises a lower bottom plate 3, a side plate 18, a lower end bearing seat 4, an upper end bearing seat 5 and a central shaft 11; the central shaft 11 is matched with the first bearing 12, so that the circular rotating disc 13 can perform pivoting motion around the central shaft 11 relative to the supporting device; the number of the locking devices is 4, the locking devices are uniformly distributed at four corners of the bottom plate 3, and each locking device is composed of a bolt 15 and a nut 16; the thread structure 8 is a rectangular thread; the first bearing 12 is a sliding bearing.

The specific implementation process comprises the following steps: the worm 14 is driven to rotate forwards through the driving device, and the worm 14 and the meshing teeth 10 on the sector gear 9 are in a coupling structure, so that the arc-shaped pressure lever 2 of the chuck device is driven to realize nodding action, and further a workpiece 17 is pressed tightly; when the workpiece 17 to be machined completes the drilling operation, the driving device drives the worm 14 to rotate reversely, so that the loosening action is realized.

The above description is only for the preferred embodiment of the present invention, and not intended to limit the present invention in any way, and those skilled in the art can make various modifications, equivalent changes and modifications using the above-described technical content, all of which fall within the scope of the present invention.

Claims

1. A drill positioning clamp comprises a mounting seat (1), a chuck device, a driving device, a supporting device and a locking device; the device is characterized in that a lower bottom plate (3) of the supporting device is fixed on the mounting seat (1) through a locking device; the clamping head device comprises an arc-shaped pressure rod (2), a circular rotary table (13), a sector gear (9), a lower end bearing seat (4) and an upper end bearing seat (5), wherein one side of the circular rotary table (13) is fixedly connected with the arc-shaped pressure rod (2), the other side of the circular rotary table (13) is fixedly connected with the sector gear (9), the sector gear (9) is provided with meshing teeth (10), a circular through hole is formed in the circular rotary table (13), and a first bearing (12) is arranged in the circular through hole; the driving device is a worm (14), two ends of the worm (14) are of smooth cylindrical structures, the middle part of the worm (14) is of a thread structure (8), and the thread structure (8) is meshed with meshing teeth (10) on the sector gear (9); one end of the worm (14) is provided with a blind hole (7), the inner circumferential surface of the blind hole (7) is provided with a spline, and the worm (14) is driven to rotate by a connecting driving mechanism; two ends of the driving device are rotatably supported on the chuck device through a lower end bearing seat (4) and an upper end bearing seat (5), a second bearing (6) is arranged in the upper end bearing seat (5), and one end of the driving device is arranged in the second bearing (6); the supporting device comprises a lower bottom plate (3), a side plate (18), a lower end bearing seat (4), an upper end bearing seat (5) and a central shaft (11); the central shaft (11) is matched with the first bearing (12) so that the circular rotating disc (13) can do pivoting motion around the central shaft (11) relative to the supporting device.

2. The drill press positioning fixture of claim 1, wherein: the number of the locking devices is 4, the locking devices are uniformly distributed at four corners of the lower bottom plate (3), and each locking device is composed of a bolt (15) and a nut (16).

3. The drill press positioning fixture of claim 1, wherein: the thread structure (8) is a rectangular thread.

4. The drill press positioning fixture of claim 1, wherein: the first bearing (12) is a sliding bearing.