Multi-station rotary pressure maintaining table type machining center clamp

Abstract

The utility model relates to a multi-station rotary pressure maintaining table type machining center clamp which comprises a base plate and a rotary bottom plate rotatably arranged on the base plate, and a cross-shaped clamp part is arranged on the rotary bottom plate. The clamp part is divided into four clamp bodies which are distributed in a cross shape, and the four clamp bodies are the same in structure; an oil path oil inlet pressure maintaining system is arranged above the clamp body; a cavity area in which a pipe fitting can be placed is arranged below the base; an arc-shaped fixing bottom support is arranged at the bottom of the cavity area, and a pressing mechanism is arranged on the inclined upper portion of the cavity area. The pressing mechanism comprises a supporting oil cylinder and a pressing block arranged at the tail end of the supporting oil cylinder. The multi-station rotary pressure maintaining table type machining center clamp has the advantages of being capable of achieving oil pressure protection, capable of rotating and good in pressing effect.

Description

Technical Field

[0001] The utility model relates to a multi-station rotary pressure-maintaining table-type machining center fixture. Background Art

[0002] Machining centers are widely used mechanical processing equipment. They have a high level of automation and can automatically and continuously process workpieces. The working efficiency of machining centers can be improved by simply reducing or saving the installation time of workpieces to be processed. Machining centers can process many workpieces, among which pipe fittings need to be fixed during processing because some need to process internal threads and some need to punch holes. Pipe fittings are circular in structure and hollow in the middle, so they are easily deformed when clamped. However, if the clamping force is not enough, they will move during processing, reducing the processing accuracy. In addition, many existing pipe fixtures are single clamping, which is not conducive to the efficiency of machining centers. Utility Model Content

[0003] The utility model mainly solves the technical problems existing in the prior art, thereby providing a multi-station rotary pressure-maintaining table-type machining center fixture with oil pressure protection, rotatable and good pressing effect.

[0004] The above technical problems of the utility model are mainly solved by the following technical solutions:

[0005] The utility model discloses a multi-station rotary pressure-maintaining table-type machining center fixture, comprising a chassis and a rotating bottom plate rotatably arranged on the chassis, a "cross"-shaped fixture part being arranged on the rotating bottom plate; the fixture part is divided into four fixture bodies distributed in a "cross" shape, and the four fixture bodies have the same structure; an oil inlet pressure-maintaining system is arranged above the fixture body; a cavity area for placing pipe fittings is arranged below; an arc-shaped fixed bottom support is arranged at the bottom of the cavity area, and a clamping mechanism is arranged obliquely above the cavity area; the clamping mechanism comprises a supporting oil cylinder and a pressing block arranged at the end of the supporting oil cylinder.

[0006] Preferably, the oil circuit oil inlet pressure maintaining system comprises an oil circuit groove which is concave on the fixture body, and an oil inlet and an oil return port which are arranged just above the fixture part.

[0007] Preferably, an accumulator for storing oil is arranged above the clamp, and a reversing valve and a one-way valve are arranged on one side of the accumulator.

[0008] Preferably, a positioning angle oil cylinder is symmetrically arranged on one side of the clamp body, and a pressing plate is arranged on the positioning angle oil cylinder.

[0009] Preferably, a sequence valve is provided on the upper side of each clamp body.

[0010] Preferably, fixing plates are respectively provided on both sides of the supporting oil cylinder.

[0011] The beneficial effects of the utility model are:

[0012] The supporting oil cylinder and the pressing block are used to perform a floating pressing on the pipe fittings at an oblique angle. Under the action of the oil cylinder, it can ensure that the pipe fittings will not loosen after pressing, and will not be deformed due to excessive pressure. In addition, the oil inlet pressure maintenance system is adopted in the fixture to ensure the stability of energy and play a role in improving efficiency and saving energy. In addition, the "cross" structure is used to distribute the fixture body, and a sequential valve is added, so that the fixture can clamp multiple pipe fittings at the same time, and automatically rotate in sequence in the machining center for processing, which improves the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 , 3 It is a structural schematic diagram of the utility model;

[0015] Figure 2 , 4 5 is a partial enlarged schematic diagram of the utility model.

[0016] In the figure: 1-chassis, 2-rotating bottom plate, 3-clamp body, 4-accumulator, 5-check valve, 6-reversing valve, 7-oil inlet, 8-oil return port, 3.1-positioning angle cylinder, 3.2-support cylinder, 3.3-pressing block, 3.4-fixing part, 3.5-pressing piece DETAILED DESCRIPTION

[0017] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0018] like Figure 1-2 As shown, a multi-station rotary pressure-maintaining tabletop machining center fixture is mainly used for clamping pipe-like workpieces on the machining center. The machining center has a high level of automation and can work continuously. The more times the workpiece is clamped, the lower the efficiency. In addition, since the pipe-shaped workpiece is round and hollow in the middle, if the clamping force is too large, it will cause deformation. If the clamping force is too small, the round outer surface will cause sliding.

[0019] It includes a chassis 1, and a rotating bottom plate 2 rotatably arranged on the chassis 1, a "cross"-shaped clamp part is arranged on the rotating bottom plate 2; the clamp part is divided into 4 clamp bodies 3, which are distributed in a "cross" shape, and the 4 clamp bodies 3 have the same structure; an oil circuit oil inlet pressure maintaining system is arranged above the clamp body 3; a cavity area for placing pipe fittings is arranged below; an arc-shaped fixed bottom support is arranged at the bottom of the cavity area, and a clamping mechanism is arranged obliquely above the cavity area; the oil circuit oil inlet pressure maintaining system mainly acts on the clamping mechanism, so that the clamping mechanism can clamp the pipe fitting more stably and tightly; the existing oil circuit oil inlet pressure maintaining systems are all arranged on machine tools, so It can make the tool more stable, and there are fewer pressure-maintaining systems on the fixture; the clamping mechanism includes a supporting cylinder 3.2 and a pressure block 3.3 arranged at the end of the supporting cylinder 3.2; under the action of the oil inlet pressure-maintaining system of the oil circuit, although the pressure of the supporting cylinder 3.2 is not the largest, once locked, it will not scale, ensuring that the pressure block 3.3 can be pressed on the pipe fittings and press the pipe fittings from the upper side to prevent the pipe fittings from moving; it should be noted here that the supporting cylinder 3.2 is an existing product, so the applicant will not make a detailed introduction here; the applicant just combines the supporting cylinder with the pressure block and uses them on the fixture, and designs it from the upper side.

[0020] The oil inlet and pressure maintaining system includes an oil circuit groove (not shown) concave on the clamp body 3, and an oil inlet 7 and an oil return port 8 arranged just above the clamp part; the hydraulic oil enters from the oil inlet 7 to the oil circuit groove in the clamp body 3, flows along the oil circuit groove all the way to the designated position, and then returns from the oil return port 8 for reciprocating use.

[0021] See also Figure 4 As shown, an accumulator 4 for storing oil is arranged above the clamp body 3, and a reversing valve 6 and a one-way valve 5 are arranged on one side of the accumulator 4. Furthermore, when the oil is continuously supplied, the supporting cylinder 3.2 is supplied with oil, and the pipe fitting can be continuously clamped, and part of the energy is stored in the accumulator 4. When the oil supply is cut off, the one-way valve 5 can prevent the sudden pressure relief of the oil circuit. The existing supporting cylinder 3.2 inevitably has a small leakage. At this time, the energy in the accumulator 4 is used to supplement it, so that the oil circuit pressure can be maintained.

[0022] See also Figure 5As shown, a positioning angle cylinder 3.1 is symmetrically arranged on one side of the clamp body 3, and a pressing plate 3.5 is arranged on the positioning angle cylinder 3.1; specifically, when the pipe A is positioned, the pressing block 3.3 applies a clamping force from the upper side, and the bottom is the bottom of the clamp body 3, and the pressing plate 3.5 applies a clamping force from the rear of the pipe A to prevent the pipe A from moving in the front and rear directions. The direction of the pressing plate 3.5 is controlled by the positioning angle cylinder 3.1. When in use, the pressing plate 3.5 is pressed against the rear end of the pipe A. When not in use, the pressing plate 3.5 is rotated to both ends and no longer conflicts with the end of the pipe A.

[0023] A sequence valve 9 is provided on the upper side of each of the clamp bodies 3 for controlling the processing sequence of the four clamp bodies 3 so that the clamp bodies 3 can rotate in an orderly manner.

[0024] The two sides of the supporting oil cylinder 3.2 are respectively provided with fixing plates 3.4 for providing a supporting force to the supporting oil cylinder 3.2 from below, and also can play a certain protective role.

[0025] The beneficial effects of the utility model are:

[0026] The supporting oil cylinder and the pressing block are used to perform a floating pressing on the pipe fittings at an oblique angle. Under the action of the oil cylinder, it can ensure that the pipe fittings will not loosen after pressing, and will not be deformed due to excessive pressure. In addition, the oil inlet pressure maintenance system is adopted in the fixture to ensure the stability of energy and play a role in improving efficiency and saving energy. In addition, the "cross" structure is used to distribute the fixture body, and a sequential valve is added, so that the fixture can clamp multiple pipe fittings at the same time, and automatically rotate in sequence in the machining center for processing, which improves the processing efficiency.

[0027] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A multi-station rotary pressure-maintaining table-type machining center fixture, characterized in that: The invention comprises a chassis (1), and a rotating bottom plate (2) rotatably arranged on the chassis (1), wherein a "cross"-shaped clamp part is arranged on the rotating bottom plate (2); the clamp part is divided into four clamp bodies (3) distributed in a "cross" shape, and the four clamp bodies (3) have the same structure; an oil inlet pressure maintaining system is arranged above the clamp body (3); a cavity area for placing pipe fittings is arranged below; a circular arc-shaped fixed bottom support is arranged at the bottom of the cavity area, and a clamping mechanism is arranged obliquely above the cavity area; the clamping mechanism comprises a supporting oil cylinder (3.2) and a pressing block (3.3) arranged at the end of the supporting oil cylinder (3.2).

2. The multi-station rotary pressure-maintaining table-type machining center fixture according to claim 1, characterized in that: The oil circuit oil inlet pressure maintaining system comprises an oil circuit groove which is concave on the clamp body (3), and an oil inlet (7) and an oil return port (8) which are arranged directly above the clamp part.

3. The multi-station rotary pressure-maintaining table-type machining center fixture according to claim 2, characterized in that: An accumulator (4) for storing oil is arranged above the clamp body (3), and a reversing valve (6) and a one-way valve (5) are arranged on one side of the accumulator (4).

4. The multi-station rotary pressure-maintaining table-type machining center fixture according to claim 2, characterized in that: A positioning angle oil cylinder (3.1) is symmetrically arranged up and down on one side of the clamp body (3), and a pressing sheet (3.5) is arranged on the positioning angle oil cylinder (3.1).

5. The multi-station rotary pressure-maintaining table-type machining center fixture according to claim 2, characterized in that: A sequence valve (9) is provided on the upper side of each clamp body (3).

6. The multi-station rotary pressure-maintaining table-type machining center fixture according to claim 1, characterized in that: Fixed plates (3.4) are respectively provided on both sides of the supporting oil cylinder (3.2).

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