Double-tooth-shaped ball head floating positioning device

Abstract

The utility model relates to a double-tooth-shaped ball head floating positioning device, which aims to solve the technical problems of small positioning contact area and easiness in loosening when a base plate and a supporting nail are adopted, and adopts the technical scheme that the double-tooth-shaped ball head floating positioning device comprises an alloy head, a spherical gasket, a pressing block base body and a screw, mounting grooves are formed in the two ends of a screw hole of the spherical gasket, the alloy head is connected into the mounting groove in the top of the spherical gasket through a screw, a ball-socket-shaped hole is formed in the middle of the top face of the pressing block base body, the spherical gasket and the screw are located in the ball-socket-shaped hole, and the upper end of the spherical gasket exceeds the top face of the pressing block base body. And the spherical gasket can rotate in the ball socket-shaped hole. The clamp has the advantages of being stable in positioning, firm in clamping, free of looseness during machining, high in machining precision, free of waste products, safe to operate and the like.

Description

Technical Field

[0001] This utility model belongs to the field of machining fixture technology, specifically relating to a double-toothed ball-head floating positioning device. Background Technology

[0002] In machining, typical box-shaped workpieces are processed using vertical or horizontal machining centers. Fixtures are designed for clamping during machining, typically employing a shape-based positioning system (positioning on the bottom and two vertical sides) with clamping on one side. Positioning uses a pad and support pins. When the shape is a relatively flat plane, this structure allows for complete contact with the workpiece surface, ensuring cutting accuracy. However, when the shape is an irregular plane (i.e., the positioning surface is curved), this structure creates point contact with the workpiece surface. Due to the small contact area, it cannot overcome the cutting forces generated during machining, easily leading to workpiece loosening or even detachment from the fixture, causing equipment damage and posing safety hazards to operators. Utility Model Content

[0003] The purpose of this invention is to solve the above-mentioned problems and provide a double-toothed ball-head floating positioning device.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A double-toothed ball-head floating positioning device includes an alloy head, a spherical pad, a pressure block base, and screws. The alloy head and the spherical pad have a screw hole of the same size in the middle. The spherical pad has mounting grooves at both ends of the screw hole. The alloy head is connected to the mounting groove on the top of the spherical pad by screws. The pressure block base has a spherical socket in the middle of its top surface. The spherical pad and the screw are located in the spherical socket, and the upper end of the spherical pad extends beyond the top surface of the pressure block base. The spherical pad can rotate within the spherical socket.

[0006] Furthermore, the diameter of the alloy head is smaller than the diameter of the mounting groove, and its height is greater than the depth of the mounting groove.

[0007] Furthermore, the diameter of the screw nut is smaller than the diameter of the mounting groove.

[0008] Furthermore, the top surface of the alloy head is uniformly provided with double helical teeth.

[0009] Furthermore, an O-ring is provided at the upper part of the spherical hole.

[0010] Furthermore, the alloy head is made of any type of cemented carbide material.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. The alloy head end face of this utility model is double-toothed, which makes tight contact with the workpiece surface under the action of clamping force and firmly embeds itself into the surface, making the positioning firm. The pad connected to the alloy head is spherical and is placed in the corresponding ball socket of the pressure block base. It can rotate flexibly and can rotate with the working shape under the action of clamping force during positioning. This achieves multiple point contact points and a large contact area between the workpiece surface and the positioning device, making the positioning stable and avoiding the phenomenon of the workpiece loosening or even the workpiece falling off the clamp during processing. It effectively solves the technical problem of unstable positioning.

[0013] 2. This utility model has the advantages of stable positioning, firm clamping, no loosening during processing, high processing accuracy, no waste products, and safe operation. Attached Figure Description

[0014] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0015] Figure 2 for Figure 1 A magnified view of the upper middle section;

[0016] In the diagram: 1-alloy head, 2-spherical gasket, 3-pressure block base, 4-O-ring, 5-screw. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] like Figure 1-2 As shown, the double-toothed ball-head floating positioning device includes an alloy head 1, a spherical pad 2, a pressure block base 3, and a screw 5. The alloy head 1 is made of tungsten-cobalt alloy material, with double oblique teeth evenly distributed on its top surface. A screw hole of the same size is opened at the bottom of the alloy head 1 and the middle of the spherical pad 2. Mounting grooves are opened at both ends of the screw hole of the spherical pad 2. The alloy head 1 is connected to the mounting groove on the top of the spherical pad 2 by the screw 5. The diameter of the nuts of the alloy head 1 and the screw 5 is smaller than the diameter of the mounting groove, and the height of the alloy head 1 is greater than the depth of the mounting groove. A ball-shaped hole is provided in the middle of the top surface of the pressure block base 3. The spherical pad 2 and the screw 5 are located in the ball-shaped hole, and the upper end of the spherical pad 2 extends beyond the top surface of the pressure block base 3. The spherical pad 2 can rotate in the ball-shaped hole. An O-ring 4 is provided in the upper part of the ball-shaped hole.

[0019] The alloy head 1 can also be made of any other hard alloy material.

[0020] The working process of this utility model:

[0021] When using this utility model, the pressure block base 3 is fixedly installed on the fixture with the top surface of the base 3 facing the clamping surface. The workpiece to be processed is installed on the fixture. At this time, the double helical teeth on the top surface of the alloy head 1 press against the surface of the workpiece. Since the spherical pad 2 can rotate in the ball-and-socket hole, the alloy head 1 can be adaptively adjusted according to the shape of the workpiece surface. Since the alloy head 1 is made of hard alloy with high hardness, the double helical teeth can firmly penetrate into the surface of the workpiece when clamped, increasing the number of contact points with the workpiece. Compared with the pad and support pin, the contact area is increased, ensuring the stability and accuracy of the workpiece positioning on the fixture and ensuring the stability of the processing.

Claims

1. A double-toothed ball-head floating positioning device, characterized in that, The device includes an alloy head (1), a spherical pad (2), a pressure block base (3), and a screw (5). The alloy head (1) and the spherical pad (2) have screw holes of the same size in the middle. The spherical pad (2) has mounting grooves at both ends of the screw holes. The alloy head (1) is connected to the mounting groove on the top of the spherical pad (2) by the screw (5). The pressure block base (3) has a spherical hole in the middle of its top surface. The spherical pad (2) and the screw (5) are located in the spherical hole, and the upper end of the spherical pad (2) extends beyond the top surface of the pressure block base (3). The spherical pad (2) can rotate in the spherical hole.

2. The double-toothed ball-head floating positioning device according to claim 1, characterized in that, The diameter of the alloy head (1) is smaller than the diameter of the mounting groove, and the height is greater than the depth of the mounting groove.

3. The double-toothed ball-head floating positioning device according to claim 1, characterized in that, The diameter of the nut of the screw (5) is smaller than the diameter of the mounting groove.

4. The double-toothed ball-head floating positioning device according to claim 1, characterized in that, The top surface of the alloy head (1) is uniformly provided with double oblique teeth.

5. The double-toothed ball-head floating positioning device according to claim 1, characterized in that, An O-ring (4) is provided in the upper part of the ball-shaped hole.

6. The double-toothed ball-head floating positioning device according to claim 1, characterized in that, The alloy head (1) is made of any kind of hard alloy material.

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