CN104043879A - Thread transfer printing device - Google Patents

Abstract

A thread transfer device, including a transfer base, an adjustable nut limiting piece, an adjustable mandrel limiting piece, a pressing device, a pin and a rotating device; The vertical section of the groove is an inverted isosceles trapezoid; and it is provided with internal threads; the transfer base is also provided with reinforcing ribs; the adjustable nut limiting piece and the adjustable mandrel limiting piece are arc-shaped, and the bottom is connected block; the adjustable mandrel limit piece is provided with concave and convex threads; the limit block is slidably installed in the waist-shaped groove, and its surface is provided with a limit thread that matches the internal thread; the pressing device is right-angled and fixed on the transfer base outside; the pin is installed on the upper end of the pressing device; the rotating device is connected with the pin. The invention solves the problem of too large floor area due to the need for a large number of processing tools, improves the working environment, improves the processing efficiency of internal threads, and has the advantages of simple manufacture, low cost, and suitable for workpieces of other types of nuts. processing characteristics.

Description

Thread transfer device

technical field

The invention belongs to the field of thread processing equipment, and specifically relates to a thread transfer device that can transfer threads on the inner surface of different nuts according to the size of the nut.

Background technique

With the development of current technology, the shape and precision of parts are required to be higher and higher in production. In various existing equipment and products, nuts can be seen everywhere. In order to make these equipment or products more sophisticated, the nuts need to be finished.

In the existing method for machining internal threads of nuts, it is usually necessary to select a corresponding tool according to the size of the inner diameter of the nut, insert into the inner diameter of the nut for rotation, and process the inner thread. Due to the different sizes of the nuts, more internal thread processing tools are required, but only one processing tool is required for each internal thread processing, which easily leads to the placement of processing tools everywhere, which not only increases the floor space, but also increases the work efficiency. The environment is complex, and it is easy to cause the loss of processing tools.

Therefore, it is a difficult problem for those skilled in the art to develop a thread transfer device that can be adjusted according to the inner diameter of different nuts and transfer internal threads on its inner surface.

Contents of the invention

In order to solve the above problems, the present invention discloses a screw thread transfer device that can be adjusted according to the inner diameter of different nuts and transfer internal threads on the inner surface.

In order to achieve the above object, the present invention provides the following technical solutions:

A screw transfer printing device, including a transfer base, an adjustable nut limiting piece, an adjustable mandrel limiting piece, a pressing device, a pin and a rotating device; The vertical section of the groove is an inverted isosceles trapezoid; and it is provided with internal threads; the transfer base is also provided with reinforcing ribs; the waist-shaped groove and the reinforcing ribs divide the transfer base evenly; the adjustable nut limit piece is arc-shaped , the bottom of which is connected with a limiting block; the adjustable mandrel limiting piece is also arc-shaped, and its bottom is also connected with a limiting block; and the side of the adjustable mandrel limiting piece farther from the center of the transfer base is provided with concave and convex threads; The block is slidably installed in the waist-shaped groove, and the surface of the limiting block is provided with a limited thread that matches the internal thread; the pressing device is right-angled and fixed outside the transfer base; the pin is installed on the upper end of the pressing device ; Rotary device is connected to the pin.

The invention relates to a thread transfer device, which is composed of a transfer base, an adjustable nut limiting piece, an adjustable mandrel limiting piece, a pressing device, a pin and a rotating device.

The transfer base is the main body of the present invention, and the adjustable nut limiting piece and the adjustable mandrel limiting piece are installed on the transferring base. The transfer base is in the shape of a flat round cake, with a waist-shaped groove milled out through milling, and is provided with reinforcing ribs, and the vertical interface is an inverted isosceles trapezoidal shape. The waist-shaped groove with internal threads is matched with a limited block to make it adjustable The nut limiting piece and the adjustable mandrel limiting piece can slide in the waist-shaped groove according to the inner diameter and outer diameter of the nut to be processed. The adjustable nut limiting piece limits the outer ring of the nut, and the adjustable mandrel limiting piece limits the inner diameter of the nut, so that the fixing effect on the inner and outer surfaces of the nut is better; In the case of the base, the strength and rigidity of the present invention are enhanced, material consumption is saved, weight is reduced, and cost is reduced; and the present invention can ensure the stability of the internal thread transfer.

The side of the adjustable mandrel limiting piece farther from the center of the transfer base is provided with concave-convex threads, which can be used to transfer the corresponding threads on the inner surface of the nut.

The pressing device is in a right-angle shape and is fixed on the edge of the processing base. A pin is installed on the upper end of the pressing device and is connected with the pin by using a rotating device. When using the adjustable nut limiting piece and the adjustable mandrel limiting piece provided by the present invention to fix the nut to be processed on the center of the processing base, press down to drive the pin at the upper end to insert into the inner side of the bearing, and use the rotating device to rotate the pin The needle drives the bearing that is pressed against the pin to rotate, and then uses external force to keep the nut fixed, so that the adjustable mandrel limiting piece completes the transfer of the internal thread on the inner surface of the nut.

Preferably, washers are fixed at the bottoms of both the adjustable nut limiting piece and the adjustable mandrel limiting piece, and are rotatably connected to the limiting block through an adjusting screw.

When the limiting block is fixed in its position, it needs to be rotated. After the rotation, the orientation of the adjustable nut limiting piece and the adjustable mandrel limiting piece needs to be adjusted. Washers are fixed at the bottom of the bottom and are connected to the limiting block through the adjusting screw, so that the orientation of the adjustable nut limiting piece and the adjustable mandrel limiting piece can be adjusted by screwing the adjusting screw, and then the adjusting screw is tightened to adjust the adjustable nut The limiting piece and the adjustable mandrel limiting piece are fixed.

Preferably, the diameter of the pin is 1.1-1.5 times the diameter of the circle formed by the end points of the waist-shaped grooves close to the center of the transfer base.

The function of the pin is to compress the pin and the adjustable mandrel limit piece by pressing down, and then through the rotating device connected with the pin, and with the help of external force to fix the nut, it drives the transfer base to rotate, and is limited by the adjustable mandrel. The relative movement of the chip and the nut completes the transfer of the internal thread. Since the pin needs to be pressed against the adjustable mandrel limiting piece, the diameter of the pin needs to be slightly larger than the diameter of the circle formed by the adjustable mandrel limiting piece, and then consider that when the adjustable mandrel limiting piece is pressed against the inside of the thread Therefore, it is advisable to design the diameter of the pin to be 1.1-1.5 times the diameter of the circle formed by the end point of the waist-shaped groove close to the center of the transfer base, and multiple pins with different diameters can be designed for easy replacement.

Preferably, there are three waist-shaped grooves and reinforcing ribs, which are evenly distributed in a staggered manner; scale lines are provided on the edge of the waist-shaped groove.

If the number of waist-shaped grooves is selected as two, it must not be fixed in the direction perpendicular to the connection line of the waist-shaped grooves; if the number of waist-shaped grooves is selected to be more than three, although the fixing effect has been improved, it will make the The slidable range of the adjustable nut limiting piece and the adjustable mandrel limiting piece on the waist-shaped groove is reduced, which reduces the adjustability of the adjustable nut limiting piece and the adjustable mandrel limiting piece in the present invention to a certain extent. Similarly, if the number of ribs is designed to be two, then the strength and rigidity of the transfer substrate in at least one direction will be too small, which will cause the present invention to be prone to distorted deformation due to uneven stress during use. ; If the number of reinforcing ribs is greater than three, although the strength and rigidity of the transfer substrate have been improved, because the reinforcing ribs occupy more space, the adjustable nut limiting piece and the adjustable mandrel limiting piece are also adjustable. The scope is narrowed.

Therefore, it is advisable to set the number of waist-shaped grooves and reinforcing ribs to three, which divides the transfer base equally, and enhances the stability of the transfer base.

The groove edge of the waist-shaped groove is also provided with a scale line, so that the sliding position and distance of the adjustable nut limiting piece and the adjustable mandrel limiting piece are visible, so that different adjustable nut limiting pieces and adjustable mandrel limiting pieces are all Slide to the same position from the center of the transfer base; at the same time, when encountering nuts of the same size in the future, you can directly adjust the adjustable nut limit piece and the adjustable mandrel limit piece to the appropriate position, and directly carry out the internal thread. processing, saving man-hours.

Preferably, the adjustable mandrel restricting piece is a memory alloy piece.

The memory alloy sheet is used as the material of the adjustable mandrel limit piece, so that the adjustable mandrel limit piece can obtain a large amount of deformation when thread transfer is performed on the inner surface of the nut, which can make the transferred internal thread effect better .

Compared with the existing internal thread processing device, the present invention fixes nuts of different sizes through the adjustable adjustable nut limiting piece and the adjustable mandrel limiting piece, and makes the adjustable core The rod limiting piece and the nut produce relative motion to carry out internal thread transfer. Therefore, the beneficial effects of the present invention are as follows: (1) solves the problem of too large floor area due to the need for a large number of processing tools, and improves the working environment; (2) improves the processing efficiency of internal threads; (3) is simple to manufacture , The cost is low; (4) It is suitable for the processing of workpieces of other types of nuts.

Description of drawings

Fig. 1, structural representation of the present invention;

Fig. 2 is a structural schematic diagram of the adjustable adjustable nut limiting piece and the adjustable mandrel limiting piece in the present invention.

List of reference signs: transfer base 1, adjustable nut limiting piece 2, adjustable mandrel limiting piece 3, pressing device 4, pin 5, rotating device 6, waist-shaped groove 7, reinforcing rib 8, limiting block 9. Washer 10, adjusting screw 11.

Detailed ways

The technical solutions provided by the present invention will be described in detail below in conjunction with specific examples. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

As shown in Figure 1, it is a structural schematic diagram of the present invention. The present invention is a thread transfer device, including a transfer base 1, an adjustable nut limiting piece 2, an adjustable mandrel limiting piece 3, a pressing device 4, a pin Needle 5 and rotating device 6.

The transfer base 1 is in the shape of a round cake, and a waist-shaped groove 7 is milled out. Its vertical section is an inverted isosceles trapezoid; 7 and reinforcing rib 8 divide the transfer base 1 equally; the number of waist-shaped grooves 7 and reinforcing ribs 8 are three, and they are staggered and evenly distributed; the groove edge of waist-shaped groove 7 is provided with a scale line.

The adjustable nut limiting piece 2 is arc-shaped, and its bottom is connected with a limiting piece 9; the adjustable mandrel limiting piece 3 is also arc-shaped, and is a memory alloy piece, and its bottom is also connected with a limiting piece 9; the adjustable nut limiting piece 2 and the adjustable Washers 10 are fixed at the bottom of the restricting pieces 3 of the adjusting rod, and are rotatably connected to the restricting block 9 through an adjusting screw 11 . The side of the adjustable mandrel limiting sheet 3 farther away from the center of the transfer base 1 is provided with concave-convex threads; the limiting block 9 is slidably installed in the waist-shaped groove 7, and the surface of the limiting block 9 is provided with a thread that matches the internal thread. limited thread;

The pressing device 4 is in the shape of a right angle and is fixed outside the transfer base 1 .

The pin 5 is installed on the upper end of the pressing device 4; the diameter of the pin 5 is 1.2 times of the diameter of the circle formed by the end points of the waist-shaped groove 7 near the center of the transfer base 1.

The rotating device 6 is connected to the pin 5 .

Before using the present invention to process the nut, it is necessary to adjust the pressing device 4 to the highest position; after the adjustment is completed, first slide the adjustable mandrel limiting piece 3 along the waist-shaped groove 7 to the transfer base 1 through the limiting block 9 In the center section, slide the adjustable nut limiting piece 2 to the edge of the transfer base 1, and place the nut to be processed in the center of the transfer base 1, so that the adjustable mandrel limiting piece 3 is located within the inner diameter of the nut; after that Slide the adjustable mandrel limiting piece 3 outward, slide the adjustable nut limiting piece 2 inward, and keep the limiting blocks 9 on the three waist-shaped grooves 7 at the same scale to complete the fixing of the nut to be processed.

Select a suitable pin 5 according to the inner diameter of the nut to be processed, adjust the pressing device 4, and move the pin 5 downward, so that the adjustable mandrel limiting piece 3 compresses the inner surface of the nut, and then starts the rotating device 6, and simultaneously The external force keeps the nut fixed, so that the relative movement between the nut and the adjustable mandrel limiting piece 3 completes the transfer of the internal thread.

Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention rather than restrictive technical solutions. Those of ordinary skill in the art should understand that those who modify or equivalently replace the technical solutions of the present invention do not depart from the present invention. The purpose and scope of the technical solution should be included in the scope of the claims of the present invention.

Claims (5)

1. A thread transfer device, characterized in that it includes a transfer base (1), an adjustable nut limiting piece (2), an adjustable mandrel limiting piece (3), a pressing device (4), a pin (5) and a rotating device (6); the transfer base (1) is in the shape of a round cake, and a waist-shaped groove (7) is milled out, and its vertical section is an inverted isosceles trapezoid; and an internal thread is provided The transfer base (1) is also provided with reinforcement ribs (8); the waist-shaped groove (7) and the reinforcement ribs (8) divide the transfer base (1) equally; the adjustable nut limits the piece ( 2) It is arc-shaped, and its bottom is connected with a limiting block (9); the adjustable mandrel limiting piece (3) is also arc-shaped, and its bottom is also connected with a limiting piece (9); and the adjustable mandrel limiting piece (3) ) is provided with concave and convex threads on the side farther from the center of the transfer base (1); the limiting block (9) is slidably installed in the waist-shaped groove (7), and the surface of the limiting block (9) is provided with The thread is matched with the limited thread; the pressing device (4) is right-angled and fixed outside the transfer base (1); the pin (5) is installed on the upper end of the pressing device (4); Said rotating device (6) links to each other with pin (5). 2. A thread transfer device according to claim 1, characterized in that: the bottoms of the adjustable nut limiting piece (2) and the adjustable mandrel limiting piece (3) are fixed with washers (10), And it is connected to the limiting block (9) through the rotation of the adjusting screw (11). 3. A thread transfer device according to claim 1, characterized in that: the diameter of the pin (5) is determined by the end point of the waist-shaped groove (7) close to the center of the transfer base (1) 1.1-1.5 times the diameter of the constituting circle. 4. A thread transfer device according to claim 1, characterized in that: the number of the waist-shaped grooves (7) and the reinforcement ribs (8) is three, and they are evenly distributed in a staggered manner; the waist-shaped grooves ( 7) There are scale marks on the edge of the groove. 5. A thread transfer device according to claim 1, characterized in that: the adjustable mandrel limiting piece (3) is a memory alloy piece.