Machining center four-shaft-head pushing clamp

Abstract

The utility model discloses a machining center four-shaft-head pushing clamp which comprises an oil cylinder penetrating through the center of a four-shaft rotary table, the four-shaft rotary table is connected with a base, the base is provided with a supporting disc, the supporting disc is provided with a hollow cylindrical supporting ring, the supporting ring is used for containing a cylindrical workpiece, and the cylindrical workpiece is arranged on the supporting disc. A supporting ring is arranged on the base, a square seat is arranged at the end of the supporting ring, pressing assemblies are arranged on the base corresponding to the four corners of the square seat, and the pressing assemblies are used for pressing a workpiece on the square seat. The arc-shaped boss structure arranged at the opening can effectively center and position the workpiece, after the workpiece is machined, the oil cylinder arranged in the center can eject the workpiece out, and discharging is convenient.

Description

Technical Field

[0001] The utility model relates to the field of machine tool fixtures, in particular to a four-axis head pushing fixture for a machining center. Background Art

[0002] like Figure 1 The workpiece shown has a disc-shaped structure and is provided with multiple protruding columnar structures at the rear end. As a result, the axial length of the workpiece is relatively large. During machine tool processing, due to the heavy weight of the workpiece, it is difficult to position and clamp the workpiece using the claw disk. When some claw disks are positioned, due to the large axial length of the workpiece, it is difficult to remove the workpiece, which creates a major problem for workpiece processing. Utility Model Content

[0003] In order to solve the above technical problems, the utility model discloses a four-axis head pushing fixture for a machining center, comprising an oil cylinder passing through the center of a four-axis turntable, the four-axis turntable being connected to a base, the base being provided with a support plate, the support plate being provided with a hollow cylindrical support ring, the support ring being used to accommodate a cylindrical workpiece, the end of the support ring being provided with a square seat, the four corners of the square seat being provided with a clamping assembly on the base, the clamping assembly being used to press the workpiece against the square seat;

[0004] The center of the square seat is provided with an opening fixed to the support ring, the inner side of the opening is provided with an arc-shaped boss structure with at least two ends evenly distributed, the clamping assembly is provided with a support assembly, and the support assembly passes through the side wall of the support ring and is pressed on the side wall of the workpiece.

[0005] Preferably, a positioning pin is provided on the square seat.

[0006] Preferably, an elongated hole is provided on the side wall of the support ring at a position corresponding to the pressing assembly.

[0007] Preferably, the boss structure includes a step protruding from the support ring portion.

[0008] Preferably, the clamping assembly includes a column, a clamping cylinder is provided at the end of the column, a clamping block is movably connected to the output end of the clamping cylinder, the center of the clamping block is connected to the cylinder body through a movable pin assembly, and one end of the clamping block is pressed on the workpiece.

[0009] Preferably, the support assembly includes an ejection cylinder fixed on the column, and the output end of the ejection cylinder passes through the elongated hole.

[0010] Preferably, the output end of the oil cylinder is connected to a push pin, and the push pin extends into the support ring.

[0011] The four-axis head pushing clamp of the machining center proposed by the utility model has the following beneficial effects: the pushing clamp supports the workpiece axially through the support ring, and the side is pressed and positioned by the clamping assembly. At the same time, the arc-shaped boss structure arranged at the mouth can effectively center and position the workpiece. After the workpiece is processed, the center is equipped with a cylinder to push the workpiece out, which is convenient for unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments.

[0013] Figure 1 A three-dimensional image of the workpiece;

[0014] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 3 This is a structural diagram of the workpiece clamping state of the present invention;

[0016] Figure 4 A schematic diagram of a square seat of the present invention;

[0017] Among them, 1. Cylinder; 2. Four-axis turntable; 3. Base; 4. Support plate; 5. Support ring; 6. Square seat; 7. Opening; 8. Arc-shaped boss structure; 9. Positioning pin; 10. Long hole; 11. Column; 12. Clamping cylinder; 13. Pressing block; 14. Movable pin assembly; 15. Ejector cylinder. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0019] like Figure 3As shown, the utility model discloses a four-axis head pushing fixture for a machining center, including an oil cylinder 1 passing through the center of a four-axis turntable 2, the four-axis turntable 2 is connected to a base 3, a support plate 4 is provided on the base 3, and a hollow cylindrical support ring 5 is provided on the support plate 4, the support ring 5 is used to accommodate a cylindrical workpiece, the workpiece extends into the support ring 5, the center of the square seat 6 is provided with an opening 7 fixed to the support ring 5, the inner side of the mouth of the opening 7 is provided with an arc-shaped boss structure 8 evenly distributed at at least two ends, the boss structure includes a step protruding from the mouth of the support ring 5, the arc-shaped boss can be arranged into four groups evenly distributed on the mouth of the support ring 5, the step structure can be clamped on the circular disk of the workpiece to achieve preliminary centering positioning, and the end of the support ring 5 is provided with a square seat 6, and the four corners of the square seat 6 are provided with a clamping assembly on the base 3, the clamping assembly is used to press the workpiece onto the square seat 6, the circular disk of the workpiece is clamped on the square seat 6, and the disk body of the workpiece is pressed onto the square seat 6 by the clamping assembly.

[0020] Specifically, the clamping assembly includes a column 11, a clamping cylinder 12 is provided at the end of the column 11, and a clamping block 13 is movably connected to the output end of the clamping cylinder 12. The center of the clamping block 13 is connected to the cylinder body through a movable pin assembly 14. The movable pin assembly 14 is a common structure, that is, the two ends of the connecting piece are connected to the clamping block 13 through a pin at one end, and the other end is connected to the cylinder body. When the output end of the clamping cylinder 12 is extended or retracted, it can drive the other end of the clamping block 13 to lift or press on the workpiece. In addition, in order to ensure that the workpiece is accurately installed, a positioning pin 9 is provided on the square seat 6. The positioning pin 9 is used to insert into the hole at the end of the workpiece to ensure the accurate direction of the workpiece.

[0021] In order to further support and position the workpiece, a supporting assembly is provided on the clamping assembly. The supporting assembly passes through the side wall of the support ring 5 and is pressed on the side wall of the workpiece. The supporting assembly includes an ejector cylinder 15 fixed on the column 11. The output end of the ejector cylinder 15 passes through the elongated hole 10. The ejector cylinder 15 can be an air cylinder or an oil cylinder 1. A ejector block is provided at the end to press the side wall of the workpiece to prevent shaking caused by a gap between the space and the support ring 5. The side wall of the workpiece in this embodiment is provided with a hole, which can be pushed into the hole to achieve positioning.

[0022] When the workpiece is fixed by the above structure, it can be processed. The spindle tool head rotates around it to facilitate processing. After processing, since the end of the workpiece is attached and pressed on the square seat 6, it is difficult for the robot to remove the material. The lock is connected to a push pin at the output end of the cylinder 1. The push pin extends into the support ring 5 and presses on the workpiece, and the clamping mechanism is also loosened. The oil cylinder 1 is pushed out to push the workpiece disc out a certain distance, which makes it easy for the robot to grab and remove the material.

Claims

1. A four-axis head push fixture for a machining center, characterized in that: It includes an oil cylinder passing through the center of a four-axis turntable, the four-axis turntable is connected to a base, the base is provided with a support plate, the support plate is provided with a hollow cylindrical support ring, the support ring is used to accommodate a cylindrical workpiece, a square seat is provided at the end of the support ring, and a clamping assembly is provided on the base corresponding to the four corners of the square seat, and the clamping assembly is used to clamp the workpiece onto the square seat; The center of the square seat is provided with an opening fixed to the support ring, the inner side of the opening is provided with an arc-shaped boss structure with at least two ends evenly distributed, the clamping assembly is provided with a support assembly, and the support assembly passes through the side wall of the support ring and is pressed on the side wall of the workpiece.

2. The four-axis head pushing fixture for a machining center according to claim 1 is characterized in that: A positioning pin is arranged on the square seat.

3. The four-axis head pushing fixture for a machining center according to claim 1, characterized in that: A long hole is arranged on the side wall of the support ring at a position corresponding to the clamping assembly.

4. The four-axis head pushing fixture for a machining center according to claim 1, characterized in that: The boss structure includes a step protruding from the supporting ring portion.

5. The four-axis head pushing fixture for a machining center according to claim 3 is characterized in that: The clamping assembly includes a column, a clamping cylinder is provided at the end of the column, a clamping block is movably connected to the output end of the clamping cylinder, the center of the clamping block is connected to the cylinder body through a movable pin assembly, and one end of the clamping block is pressed on the workpiece.

6. The four-axis head pushing fixture for a machining center according to claim 5, characterized in that: The support assembly comprises an ejector cylinder fixed on the column, and the output end of the ejector cylinder passes through the elongated hole.

7. The four-axis head pushing fixture for a machining center according to claim 1, characterized in that: The output end of the oil cylinder is connected with a push pin, and the push pin extends into the support ring.

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