CN204413698U - A kind of fixture - Google Patents

Abstract

The utility model discloses a clamp, which comprises a Morse taper shank and an overcoat which is interference-fitted with one end of the Morse taper shank. The clamping end surface of the overcoat is provided with an inner sleeve, and the center of the end surface of the inner sleeve is A spring bushing that can expand or contract to realize clamping or loosening the parts to be processed is provided at the place, and a pull rod with one end connected to the piston rod of the lathe is arranged inside the Morse taper handle, and the other end of the pull rod is connected to the Inside the spring bushing, there is a tapered sleeve that can expand or contract the spring bushing with the movement of the pull rod, and a tapered sleeve that can make the turning tool The distance of the eccentric circle or eccentric hole processed by the part to be processed. A connecting shaft is also arranged between the pull rod and the taper sleeve. The end surface of the inner sleeve is also provided with cylindrical pins. The above-mentioned chuck enables the turning tool to process eccentric circles or eccentric holes on the part to be processed, thereby realizing the purpose of conveniently machining eccentric circles or eccentric holes.

Description

a fixture

technical field

The utility model relates to the field of mechanical engineering, in particular to a clamp.

Background technique

With the continuous development of my country's manufacturing industry, the market demand for various fixtures is increasing.

We know that in the field of mechanical manufacturing, machining eccentric circles with lathes is one of the more important processing techniques. However, generally speaking, after the part to be processed is clamped on the lathe, its axis of rotation is in line with its own axis, and the center of the machined hole is located on the axis of rotation of the part, so the processed hole is a concentric hole; For some parts, it is necessary to process the eccentric hole, that is to say, the axis of the part and the center of the eccentric hole are not collinear; therefore, it is often a big problem to process the eccentric hole with a lathe.

Therefore, how to conveniently process eccentric holes is a technical problem that those skilled in the art need to solve.

Utility model content

The purpose of the utility model is to provide a fixture which can solve the problem of inconvenient turning of eccentric holes.

In order to achieve the above purpose, the utility model provides a clamp, which includes a Morse taper handle and an outer sleeve that is interference-fitted with one end of the Morse taper handle. The clamping end surface of the outer sleeve is provided with an inner sleeve, and the inner sleeve The center of the end surface of the shank is provided with a spring bush that can expand or contract to clamp or loosen the parts to be processed. The inside of the Morse taper handle is provided with a pull rod that is connected to the piston rod of the lathe. The pull rod The other end is located inside the spring bushing, which can expand or contract the spring bushing with the movement of the pull rod. The distance for the turning tool to process an eccentric circle or an eccentric hole on the part to be processed.

Preferably, a connecting shaft is further provided between the pull rod and the taper sleeve.

Preferably, the distance between the axis of the outer sleeve and the axis of the inner sleeve is less than or equal to 3mm.

Preferably, cylindrical pins are also provided on the end surface of the inner sleeve.

Preferably, the outer sleeve and the inner sleeve are connected by bolts.

Preferably, the number of the bolts is two.

With respect to the above-mentioned background technology, the fixture provided by the utility model includes a Morse taper shank and an outer jacket with an interference fit with one end of the Morse taper shank. There is a spring bush that can expand or contract to clamp or loosen the parts to be processed. Inside the Morse taper handle is a pull rod that is connected to the piston rod of the lathe. The other end of the pull rod is located inside the spring bush and can With the movement of the pull rod, the spring bush expands or shrinks. The axis of the outer sleeve and the axis of the inner sleeve is provided with a distance that enables the turning tool to process an eccentric circle or an eccentric hole on the part to be processed. With this setting method, the parts to be processed are fixed by the inner sleeve arranged on the clamping end face of the outer sleeve. Since the axis of the outer sleeve and the axis of the inner sleeve are not collinear, there is a distance between the two axes; When the outer sleeve drives the inner sleeve and the parts to be processed on the inner sleeve to rotate, the turning tool can process eccentric circles or eccentric holes on the parts to be processed; that is to say, we can The distance between the axis of the outer sleeve and the axis of the inner sleeve is determined by the distance of the center of the circle; in this way, the turning tool can be used to process eccentric circles or eccentric holes on the parts to be processed, thus realizing convenient processing of eccentric circles or eccentric purpose of the hole.

Description of drawings

Fig. 1 is a schematic structural view of the fixture and parts to be processed provided by the present invention.

Detailed ways

The core of the utility model is to provide a fixture, which can conveniently turn the eccentric hole.

In order to enable those skilled in the art to better understand the solution of the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Please refer to FIG. 1; FIG. 1 is a schematic structural diagram of the fixture and parts to be processed provided by the present invention.

The fixture provided by the utility model includes a Morse taper shank 2 and an outer jacket 3 that is interference fit with one end of the Morse taper shank 2. The clamping end surface of the outer jacket 3 is provided with an inner sleeve 4, and the center of the end surface of the inner sleeve 4 is provided. There is a spring bushing 5 that can expand or contract to realize clamping or loosening the parts 9 to be processed. The inside of the Morse taper handle 2 is provided with a pull rod 1 that is connected to the piston rod of the lathe. The other end of the pull rod 1 is connected to the spring Inside the bushing 5, there is a taper sleeve 7 that can expand or contract the spring bushing 5 with the movement of the pull rod 1, and a tapered sleeve 7 is provided between the axis of the outer sleeve 3 and the axis of the inner sleeve 4 to allow the turning tool to process the part 9 to be processed. The distance of the eccentric circle or eccentric hole.

With this setting method, the part 9 to be processed is fixed by the inner sleeve 4 arranged on the clamping end face of the outer sleeve 3. Since the axis of the outer sleeve 3 and the axis of the inner sleeve 4 are not collinear, there is a distance between the two axes; This distance can make when the outer sleeve 3 drives the inner sleeve 4 and the parts 9 to be processed on the inner sleeve 4 to rotate, the turning tool can process the eccentric circle or eccentric hole of the workpiece 9; that is to say, we can according to the required eccentric circle Or the distance between the center of circle of the eccentric hole and the center of circle of the part 9 to be processed determines the distance between the axis of the outer cover 3 and the axis of the inner sleeve 4; Or eccentric hole, so as to achieve the purpose of convenient processing eccentric circle or eccentric hole.

Of course, we can arrange a connecting shaft 6 between the pull rod 1 and the taper sleeve 7 . That is to say, use the connecting shaft 6 to connect the tie rod 1 and the taper sleeve 7; of course, we can provide an external thread on the connecting shaft 6 and an internal thread in the tie rod 1 and the taper sleeve 7, so that the tie rod 1 and the taper sleeve 7 It is connected on the connecting shaft 6 to realize the purpose of connecting the tie rod 1 and the taper sleeve 7 .

Of course, for the connecting shaft 6, one end of the connecting shaft 6 is concentric with the main shaft of the lathe, and the other end is concentric with the taper sleeve 7, so that the purpose of machining eccentric circles or eccentric holes can be realized.

In addition, we can make the distance between the axis of the outer sleeve 3 and the axis of the inner sleeve 4 less than or equal to 3 mm.

Specifically, if the distance between the center of the required eccentric circle or eccentric hole and the center of the part 9 to be processed is 1 mm, that is, the eccentricity of the part 9 to be processed is 1 mm, then the axis of the outer cover 3 and the axis of the inner sleeve 4 can be The distance between the axes is set to 1mm; similarly, if the distance between the center of the required eccentric circle or the eccentric hole and the center of the part 9 to be processed is large, we can set the axis of the outer cover 3 to the axis of the inner sleeve 4 The distance between them is set to 3mm; of course, according to the actual situation, we can also set the distance between the axis of the outer sleeve 3 and the axis of the inner sleeve 4 to other distances, which will not be repeated here.

In addition, we can also arrange cylindrical pins 8 on the end face of the inner sleeve 4 . That is to say, we can use the cylindrical pin 8 to fix the part 9 to be processed; of course, the position of the cylindrical pin 8 can be set according to different parts 9 to be processed, and will not be repeated here.

In addition, we can also set the diameter of the cylindrical pin 8 to be smaller than the diameter of the positioning hole of the part 9 to be processed.

In this way, we can insert the cylindrical pin 8 into the positioning hole of the part 9 to be processed, so as to achieve the purpose of positioning the part 9 to be processed. Of course, we can set the number of cylindrical pins 8 to two. In this way, the parts 9 to be machined can be effectively positioned by using the two cylindrical pins 8 , so as to realize turning and machining of eccentric circles or eccentric holes.

In addition, the outer sleeve 3 and the inner sleeve 4 can be connected by bolts. That is to say, the inner sleeve 4 is fixed on the clamping end face of the outer sleeve 3 by bolts; of course, we can set the outer sleeve 3 and the inner sleeve 4 as a transition fit.

In addition, the number of bolts between the outer sleeve 3 and the inner sleeve 4 can be set to two. That is to say, the outer cover 3 and the inner cover 4 are fixed by two bolts, which facilitates disassembly during replacement. Of course, we can also set other numbers of bolts, which will not be repeated in this article.

The clamp provided by the utility model has been introduced in detail above. In this paper, specific examples are used to illustrate the implementation of the present utility model, and the descriptions of the above embodiments are only used to help understand the method and the core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made to the utility model, and these improvements and modifications also fall into the protection of the claims of the utility model. within range.

Claims (6)

1. a fixture, comprise Morse taper shank (2) and the overcoat (3) with one end interference fit of described Morse taper shank (2), the clamping end face of described overcoat (3) is provided with inner sleeve (4), the circle centre position of the end face of described inner sleeve (4) is provided with and can expands or shrink in order to realize clamping or to loosen the spring bushing (5) of part to be processed (9), the inside of described Morse taper shank (2) is provided with the pull bar (1) that one end is connected with the piston rod of lathe, the other end of described pull bar (1) is with to be positioned at described spring bushing (5) inner, the tapered sleeve (7) that described spring bushing (5) expands or shrinks can be made along with moving of described pull bar (1), it is characterized in that, be provided with between the axis of described overcoat (3) and the axis of described inner sleeve (4) and lathe tool can be made to process the distance of off-centre operation or eccentric orfice to described part to be processed (9).

2. fixture according to claim 1, is characterized in that, is also provided with connecting axle (6) between described pull bar (1) and described tapered sleeve (7).

3. fixture according to claim 2, is characterized in that, the distance between the axis of described overcoat (3) and the axis of described inner sleeve (4) is less than or equal to 3mm.

4. fixture according to claim 3, is characterized in that, the end face of described inner sleeve (4) is also provided with straight pin (8).

5. fixture according to claim 4, is characterized in that, with bolts between described overcoat (3) and described inner sleeve (4).

6. fixture according to claim 5, is characterized in that, the number of described bolt is two.