Positioning tool for CNC machining center

Abstract

The utility model provides a positioning tool for a CNC machining center, and belongs to the technical field of numerical control machining equipment. Comprising an installation base used for being fixedly connected with a machining table top of a machining center, a movable base is horizontally and movably installed on the installation base, a limiting piece used for limiting movement of the movable base is arranged on the installation base, a clamping table used for clamping a workpiece is arranged on the movable base, and positioning plates used for making contact with the workpiece are arranged on the edges of the two sides of the installation base. After the installation base is installed on a machining table top of a machining center, primary tool setting is carried out, when a workpiece to be machined is installed, the movable base is moved, the side walls of the two sides of the workpiece abut against the two positioning plates on the two sides of the installation base respectively, then the movable base is limited and fixed, and therefore positioning operation on the workpiece can be completed. And the tool setting and positioning operation is convenient, and the effect of improving the positioning and machining efficiency of the workpiece is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control processing equipment, in particular to a positioning tool for a CNC processing center. Background Art

[0002] Generally, CNC machining refers to computer digital controlled precision machining, CNC machining lathes, CNC machining milling machines, CNC machining boring and milling machines, etc. CNC machining center is an automated machining equipment that integrates automatic machining and automatic tool changing.

[0003] For workpieces with regular shapes, after the workpieces are fixed with clamps such as bench vises, positioning can be achieved through the tool positioning system of the CNC machining center. However, for parts with complex shapes, the staff needs to rely on experience to determine the distance between the tool and the part during tool positioning, which places high technical requirements on the operators, and the operation of cutting and positioning is complicated, affecting the machining efficiency. Utility Model Content

[0004] In view of the above problems, the utility model provides a positioning tool for a CNC machining center.

[0005] In order to achieve the above-mentioned invention object, the technical solution adopted by the utility model is as follows:

[0006] Provided is a positioning tool for a CNC machining center, comprising a mounting base for being connected and fixed to a machining table of the machining center, a movable seat being mounted on the mounting base for horizontal movement, a limit piece for limiting the movement of the movable seat being arranged on the mounting base, a clamping table for clamping a workpiece being arranged on the movable seat, positioning plates for contacting the workpiece being arranged on both side edges of the mounting base, and the two positioning plates being perpendicular to each other.

[0007] Furthermore, the mounting base is slidably connected to a first slide rail along its length direction, and the movable seat is slidably connected to the first slide rail along the width direction of the mounting base;

[0008] The limiting member includes a first locking handle and a second locking handle, the first locking handle is rotatably arranged on the first slide rail, a first cam is fixedly connected to the hinge shaft of the first locking handle, and the first slide rail is limited to slide by friction contact between the end of the first cam away from the hinge shaft and the mounting base;

[0009] A pull rod is provided on the moving seat for sliding along the width direction of the first slide rail, one end of the pull rod is fixedly provided with a first limit block for frictionally contacting the side wall of the first slide rail, and the other end is rotatably connected to the second locking handle, a second cam is fixedly provided on the second locking handle, and the side wall of the second cam is in frictional contact with the side wall of the moving seat, and a second limit block is fixedly provided on the moving seat for frictionally contacting the side wall of the first slide rail, and the first limit block and the second limit block are respectively located on both sides of the first slide rail.

[0010] Furthermore, support columns for contacting the mounting base are fixedly provided at the four corners of the movable seat.

[0011] Furthermore, the support column includes a support column body fixedly connected to the movable seat, a buffer seat is vertically slidably arranged at the bottom end of the support column body, a ball is rotatably arranged at the bottom end of the buffer seat, and an elastic member is arranged on the support column body for driving the buffer seat to extend downward and make the ball rollingly contact with the mounting base.

[0012] Furthermore, a first inclined surface is provided on a side of the first limit block close to the first slide rail, and a second inclined surface adapted to the first inclined surface is provided on the side of the first slide rail. When the first limit block and the second limit block cooperate with the fixed movable seat, the support column abuts against the mounting base.

[0013] Furthermore, the positioning plate is connected to the mounting base through a connecting rod assembly, the connecting rod assembly includes a first connecting rod, one end of the first connecting rod is hinged to the mounting base, and the other end is connected to the positioning plate, and a first limiting bolt for limiting the rotation of the first connecting rod is provided on the mounting base, the first limiting bolt is coaxially threadedly connected to the hinge shaft of the first connecting rod, and the first limiting bolt limits the rotation of the first connecting rod by abutting the mounting base.

[0014] Furthermore, the first connecting rod is a telescopic rod, which is hinged to the positioning plate and also includes a second connecting rod which is a telescopic rod. One end of the second connecting rod is hinged to the mounting base, and the other end is coaxially hinged to the first connecting rod on the positioning plate. The mounting base is provided with a second limiting bolt for limiting the rotation of the second connecting rod. The second limiting bolt is coaxially hinged to a hinge shaft at one end of the second connecting rod close to the mounting base, and the second limiting bolt limits the rotation of the second connecting rod by abutting the mounting base.

[0015] The beneficial effects of the utility model are as follows: after the mounting base is mounted on the machining table of the machining center, the initial tool alignment is performed, and when the workpiece to be processed is mounted, the movable seat is slid so that the side walls on both sides of the workpiece are respectively abutted against the two positioning plates on both sides of the mounting base, and then the movable seat is limited and fixed, so that the positioning operation of the workpiece can be completed, and there is no need to move the tool close to the workpiece, the tool alignment and positioning operation is convenient, and the positioning and processing efficiency of the workpiece is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the positioning tooling for the CNC machining center according to an embodiment of the present application.

[0017] Figure 2 This is a structural schematic diagram from another perspective of the positioning tooling for a CNC machining center according to an embodiment of the present application.

[0018] Figure 3 for Figure 2 A partial enlarged schematic diagram of part A.

[0019] Figure 4 It is a schematic diagram of the partial cross-sectional structure of the moving seat part of the embodiment of the present application.

[0020] Among them, 1. mounting base; 2. moving seat; 21. second locking handle; 22. pull rod; 23. first limit block; 24. second cam; 25. second limit block; 26. first inclined surface; 3. clamping table; 4. positioning plate; 5. first slide rail; 51. second inclined surface; 52. first cam; 53. first locking handle; 61. supporting column; 62. buffer seat; 63. ball; 64. elastic member; 71. first connecting rod; 72. first limit bolt; 73. second connecting rod; 74. second limit bolt. DETAILED DESCRIPTION

[0021] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] The present application embodiment discloses a positioning tool for a CNC machining center, referring to Figure 1 , including a mounting base 1, a connecting flange is fixed on the side wall of the mounting base 1, the connecting flange is connected to the T block of the T slot on the processing table of the machining center through bolts, the mounting base 1 is positioned and fixed on the processing table, and the processing tool needs to be aligned at a fixed point after installation.

[0023] There is a limiter for limiting the horizontal sliding of the movable seat 2 on the mounting base 1. The movable seat 2 is provided with a clamping table 3 for clamping the workpiece. The clamping table 3 can be a vise. Positioning plates 4 are respectively provided on the edges of the mutually perpendicular sides of the mounting base 1, so that the plate surfaces of the two positioning plates 4 are mutually perpendicular. After the workpiece is clamped on the clamping table 3, the movable seat 2 is horizontally slid so that the outer edges of the two sides of the workpiece are respectively in contact with the two positioning plates 4, so that the position of the irregular workpiece on the mounting base 1 can be determined, and then the movable seat 2 is fixed to achieve the workpiece positioning, and the staff does not need to observe the distance between the tool and the workpiece, thereby improving the positioning efficiency of the workpiece.

[0024] Reference Figure 2 and Figure 3Specifically, a first slide rail 5 is horizontally slidably installed on the mounting base 1 along one of its horizontal edges, and the movable base 2 is slidably installed on the first slide rail 5, and its sliding direction is perpendicular to the sliding direction of the first slide rail 5. In the embodiment of the present application, the first slide rail 5 slides along the length direction of the mounting base 1. The limiting member includes a first locking handle 53 and a second locking handle 21. The first locking handle 53 is rotatably installed on the first slide rail 5. A first cam 52 is fixedly connected to the hinge shaft of the first locking handle 53. By rotating the first locking handle 53, the first cam 52 is driven to rotate. When the end of the first cam 52 away from the hinge shaft is in frictional contact with the mounting base 1, the first slide rail 5 and the mounting base 1 can be limited from sliding relative to each other.

[0025] Reference Figure 4 A pull rod 22 is provided on the moving seat 2 to slide along the width direction of the first slide rail 5. A first limit block 23 for frictionally contacting the side wall of the first slide rail 5 is fixedly provided at one end of the pull rod 22, and the other end is rotatably connected to the second locking handle 21. A second cam 24 is fixedly provided on the second locking handle 21, and the side wall of the second cam 24 is in frictional contact with the side wall of the moving seat 2. A second limit block 25 for frictionally contacting the side wall of the first slide rail 5 is fixedly provided on the moving seat 2. The first limit block 23 and the second limit block 25 are respectively located on both sides of the first slide rail 5. By rotating the second locking handle 21, the end of the second protrusion away from its hinge axis is abutted against the side wall of the moving block, so that the pull rod 22 pulls the first limit block 23 and the second limit block 25 to cooperate with each other, thereby holding the moving seat 2 tightly and fixing it on the first slide rail 5.

[0026] Furthermore, support columns for contacting the mounting base 1 are fixedly provided at the four corners of the movable seat 2, and are used to provide stable support for the movable seat 2 when processing the workpiece. Furthermore, the support column includes a support column body 61 fixedly connected to the movable seat 2, a buffer seat 62 is vertically slidably provided at the bottom end of the support column body, a ball 63 is rotatably provided at the bottom end of the buffer seat 62, and an elastic member 64 is provided on the support column body for driving the buffer seat 62 to extend downward and making the ball 63 roll in contact with the mounting base 1. The elastic member 64 can be specifically a spring, one end of the spring abuts against the support column body, and the other end abuts against the buffer seat 62. A first inclined surface 26 is provided on a side of the first limit block 23 close to the first slide rail 5, and a second inclined surface 51 adapted to the first inclined surface 26 is provided on the side of the first slide rail 5. When the first limit block 23 and the second limit block 25 cooperate to fix the movable seat 2, the support column body 61 abuts against the mounting base 1.

[0027] When the second locking handle 21 is released, the elastic force of the elastic member 64 pushes the buffer seat 62 downward and supports the movable seat 2 to rise. The movable seat 2 is supported on the mounting base 1 by the balls 63 , so that the movable seat 2 moves smoothly on the mounting base 1 .

[0028] In the embodiment of the present application, the positioning plate 4 is connected to the mounting base 1 through a connecting rod assembly, and the connecting rod assembly includes a first connecting rod 71, one end of the first connecting rod 71 is hinged to the mounting base 1, and the other end is connected to the positioning plate 4, and the mounting base 1 is provided with a first limiting bolt 72 for limiting the rotation of the first connecting rod 71. By flexibly rotating the first connecting rod 71, the position of the positioning plate 4 on the mounting seat can be adjusted. When the side wall of the workpiece needs to be processed, after the positioning plate 4 is used to position the workpiece, the first connecting rod 71 is rotated to rotate the positioning plate 4 away from the original position, so as to facilitate the tool to process the side wall of the workpiece.

[0029] A hinge shaft is fixedly connected to the first connecting rod 71, and one end of the hinge shaft away from the first connecting rod 71 is rotatably connected to the mounting base 1, and a step-type anti-detachment structure is designed between the hinge shaft and the mounting base 1. A threaded hole is coaxially penetrated on the hinge shaft. After the first limiting bolt 72 passes through the hinge shaft, it can abut against the mounting base 1. By tightening the first limiting bolt 72 to abut against the mounting base 1, the rotation of the first connecting rod 71 can be limited, thereby determining the positioning plate 4 at a fixed height.

[0030] Furthermore, the first connecting rod 71 is a telescopic rod, the first connecting rod 71 is hinged to the positioning plate 4, and also includes a second connecting rod 73 which is a telescopic rod, one end of the second connecting rod 73 is hinged to the mounting base 1, and the other end is coaxially hinged to the positioning plate 4 with the first connecting rod 71, and the mounting base 1 is provided with a second limiting bolt 74 for limiting the rotation of the second connecting rod 73. By adopting the first connecting rod 71 of the telescopic rod, the placement position of the positioning plate 4 can be expanded, and in the process of moving the positioning plate 4, the second connecting rod 73 rotates and telescopes accordingly, and after the first connecting rod 71 and the second connecting rod 73 are locked at the same time, the position of the positioning plate 4 can be limited.

[0031] The connection method of the second limiting bolt 74 has the same structure as the connection method of the first limiting bolt 72 and will not be repeated. The second limiting bolt 74 is coaxially hinged on the hinge shaft of the second connecting rod 73 close to the mounting base 1. The second limiting bolt abuts the mounting base 1 to limit the rotation of the second connecting rod 73.

[0032] It should be understood by those skilled in the art that, although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention. Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A positioning tool for a CNC machining center, characterized in that: It includes a mounting base for being connected and fixed to a machining table of a machining center, a movable seat being mounted on the mounting base for horizontal movement, a limit piece for limiting the movement of the movable seat being arranged on the mounting base, a clamping table for clamping a workpiece being arranged on the movable seat, positioning plates for contacting the workpiece being arranged on both side edges of the mounting base, and the two positioning plates being perpendicular to each other.

2. A positioning tool for a CNC machining center according to claim 1, characterized in that: The mounting base is slidably connected to a first slide rail along its length direction, and the movable seat is slidably connected to the first slide rail along the width direction of the mounting base; The limiting member includes a first locking handle and a second locking handle, the first locking handle is rotatably arranged on the first slide rail, a first cam is fixedly connected to the hinge shaft of the first locking handle, and the first slide rail is limited to slide by friction contact between the end of the first cam away from the hinge shaft and the mounting base; A pull rod is provided on the moving seat for sliding along the width direction of the first slide rail, one end of the pull rod is fixedly provided with a first limit block for frictionally contacting the side wall of the first slide rail, and the other end is rotatably connected to the second locking handle, the second locking handle is fixedly provided with a second cam, the side wall of the second cam is in frictional contact with the side wall of the moving seat, and the moving seat is fixedly provided with a second limit block for frictionally contacting the side wall of the first slide rail, and the first limit block and the second limit block are respectively located on both sides of the first slide rail.

3. A positioning tool for a CNC machining center according to claim 2, characterized in that: The four corners of the movable seat are fixedly provided with support columns for contacting with the mounting base.

4. A positioning tool for a CNC machining center according to claim 3, characterized in that: The support column includes a support column body fixedly connected to a movable seat, a buffer seat is vertically slidably arranged at the bottom end of the support column body, a ball is rotatably arranged at the bottom end of the buffer seat, and an elastic member is arranged on the support column body for driving the buffer seat to extend downward and make the ball roll in contact with the mounting base.

5. A positioning tool for a CNC machining center according to claim 4, characterized in that: A first inclined surface is arranged on a side of the first limit block close to the first slide rail, and a second inclined surface adapted to the first inclined surface is arranged on a side of the first slide rail. When the first limit block and the second limit block cooperate to fix the movable seat, the support column abuts against the mounting base.

6. A positioning tool for a CNC machining center according to claim 1, characterized in that: The positioning plate is connected to the mounting base through a connecting rod assembly, and the connecting rod assembly includes a first connecting rod, one end of which is hinged to the mounting base, and the other end is connected to the positioning plate. A first limiting bolt for limiting the rotation of the first connecting rod is provided on the mounting base, and the first limiting bolt is coaxially threadedly connected to the hinge shaft of the first connecting rod. The first limiting bolt limits the rotation of the first connecting rod by abutting the mounting base.

7. A positioning tool for a CNC machining center according to claim 6, characterized in that: The first connecting rod is a telescopic rod, which is hinged to the positioning plate and also includes a second connecting rod which is a telescopic rod. One end of the second connecting rod is hinged to the mounting base, and the other end is coaxially hinged to the positioning plate with the first connecting rod. The mounting base is provided with a second limiting bolt for limiting the rotation of the second connecting rod. The second limiting bolt is coaxially hinged to a hinge shaft at one end of the second connecting rod close to the mounting base. The second limiting bolt limits the rotation of the second connecting rod by abutting the mounting base.

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