Combined tool capable of positioning any accidental circle to rotation center

Abstract

The utility model relates to the technical field of positioning tools, and discloses a combined tool capable of positioning any unexpected circle to a rotation center, which comprises a working table, four positioning blocks and two pressing plates, a plurality of straight grooves are symmetrically arranged on the upper surface of the working table, and the four positioning blocks are arranged on the upper surface of the working table. Two threaded rods are fixedly connected to the bottom wall of the interior of the straight groove located in the middle, the surfaces of the two threaded rods are both sleeved with threaded sleeves in a threaded mode, the two pressing plates are arranged on the two threaded rods correspondingly, and the interiors of the two straight grooves are both fixedly connected with a set of fixing blocks; the surface of each fixing block and the surface of each positioning block are provided with matched threaded holes. The tool can be used for rapidly positioning a workpiece, operation is easy, the positioning effect is good, and the machining effect of the workpiece is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to positioning frock technical field, concretely is a kind of combined frock that can position arbitrary external circle to rotary center. BACKGROUND

[0002] In numerical control processing, positioning refers to quickly and accurately positioning workpiece to rotary center before cutting processing, so that motion trajectory and processing trajectory in numerical control processing can be matched with each other, so as to realize high-precision processing of product.

[0003] The commonly used positioning frock is troublesome in the process of use, and the positioning efficiency is low, and the positioning effect is poor, and sliding occurs easily in the process of processing, which causes workpiece damage, and is not convenient to use. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of prior art, the utility model provides a combined frock that can position arbitrary external circle to rotary center, which solves the problems of the commonly used positioning frock, such as troublesome operation in the process of use, low positioning efficiency, poor positioning effect, easy sliding in the process of processing, workpiece damage and inconvenient use.

[0005] The utility model provides the following technical scheme: a combined frock that can position arbitrary external circle to rotary center, including workbench, four positioning blocks, two pressing plates, the upper surface of workbench is symmetrically provided with a plurality of straight grooves, the inner bottom wall of the straight groove in the middle is fixedly connected with two screw rods, the surface of two screw rods is all threaded with threaded sleeve, two pressing plates are arranged on two screw rods respectively, one group of fixed blocks is fixedly connected in the inside of two straight grooves, and the surface of each fixed block and positioning block is provided with matched threaded hole.

[0006] Preferred technical solution one: the surface of two pressing plates is provided with movable groove, the diameter of two movable grooves is greater than the diameter of screw rod, and the diameter of threaded sleeve is greater than the diameter of movable groove.

[0007] Preferred technical solution two: the lower surface of each pressing plate is fixedly sleeved with protective thick copper sheet.

[0008] Preferred technical solution three: the upper surface of each fixed block is provided with two positioning grooves, the lower surface of each positioning block is fixedly connected with positioning lug, and the positioning groove is matched with the positioning lug.

[0009] Preferred technical solution four: the positioning block and the fixed block can be fixedly connected through internal hexagonal bolt.

[0010] Preferably, the positioning block is made of 4130 steel, and the surface of the positioning block is treated by sharp angle chamfering and burr removing.

[0011] Compared with the prior art, the utility model provides a combined tooling which can position any external circle to the center of rotation, has the following beneficial effects: convenient workpiece positioning, the machine tool zero point and the workpiece center can be matched with each other, the machining efficiency is improved, the quick positioning tooling can quickly and accurately position the workpiece in a short time, the time for finding the workpiece is saved, the machining precision is improved, the quick positioning tooling can fix the workpiece, the movement and shaking of the workpiece in the machining process are avoided, and therefore the machining precision is improved, and the cost is reduced, the quick positioning tooling can reduce the damage rate of the workpiece, and the machining time and the labor cost are also reduced. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 It is a structural schematic view of the utility model;

[0013] Fig. 2 It is a split structure view of the positioning block and the fixed block of the utility model;

[0014] Fig. 3 It is a split structure view of the screw rod and the pressing plate of the utility model.

[0015] In the drawing: 1, workbench; 2, positioning block; 3, straight groove; 4, screw rod; 5, pressing plate; 6, fixed block; 7, threaded hole; 8, movable groove; 9, positioning recess; 10, positioning protrusion; 11, threaded sleeve. DETAILED DESCRIPTION

[0016] Please refer to Figs. 1-3 ,

[0017] Embodiment one: a combined tooling which can position any external circle to the center of rotation, comprising workbench 1, four positioning blocks 2, two pressing plates 5, the upper surface of workbench 1 is symmetrically provided with a plurality of straight grooves 3, the inner bottom wall of the straight groove 3 in the middle is fixedly connected with two screw rods 4, the surface of the two screw rods 4 is all threaded with threaded sleeve 11, the two pressing plates 5 are respectively arranged on the two screw rods 4, the inner part of two straight grooves 3 is all fixedly connected with a group of fixed blocks 6, and the surface of each fixed block 6 and positioning block 2 is provided with a matching threaded hole 7.

[0018] Embodiment two: the difference between this embodiment and embodiment one is that the surface of the two pressing plates 5 is provided with movable groove 8, the diameter of the two movable grooves 8 is greater than the diameter of screw rod 4, and the diameter of threaded sleeve 11 is greater than the diameter of movable groove 8.

[0019] Embodiment three: the difference between this embodiment and embodiment one is that the lower surface of each pressing plate 5 is fixedly sleeved with protective thick copper sheet.

[0020] In this embodiment, the upper surface of each fixing block 6 is provided with two positioning recesses 9, and the lower surface of each positioning block 2 is fixedly connected with a positioning protrusion 10, and the positioning recess 9 is matched with the positioning protrusion 10.

[0021] In this embodiment, the positioning block 2 and the fixing block 6 are fixedly connected through an internal hexagonal bolt.

[0022] In this embodiment, the material of the positioning block 2 is 4130 steel, and the surface of the positioning block 2 is treated by sharp angle chamfering and burr removing.

[0023] In summary, the combined tool capable of positioning any outer circle to the center of rotation is used as follows: first, the workpiece is roughly placed in the middle position of the workbench 1, then the four positioning blocks 2 are respectively aligned with the four fixing blocks 6 for installation, and the internal hexagonal bolt is used to fix the positioning block 2 and the fixing block 6, then the workpiece outer circle is used as the center reference to position the positioning block 2, then the pressing plate 5 is sleeved on the screw rod 4 and placed above the workpiece, then the threaded sleeve 11 is installed and rotated to extrude and fix the pressing plate 5, so as to press and fix the workpiece.

Claims

1. A combined tooling device capable of positioning any outer circle to the center of rotation, comprising a workbench (1), four positioning blocks (2), and two pressing plates (5), characterized in that: The upper surface of the workbench (1) is symmetrically provided with a plurality of straight grooves (3), the inner bottom wall of the middle straight groove (3) is fixedly connected to two screw rods (4), the surfaces of the two screw rods (4) are threadedly sleeved with threaded sleeves (11), and the two pressing plates (5) are respectively arranged on the two screw rods (4), wherein the interior of the two straight grooves (3) is fixedly connected to a group of fixed blocks (6), and the surfaces of each fixed block (6) and the positioning block (2) are provided with matching threaded holes (7).

2. The combined tooling capable of positioning any outer circle to the center of rotation according to claim 1, characterized in that: The surfaces of the two pressing plates (5) are both provided with movable grooves (8), the diameters of the two movable grooves (8) are larger than the diameter of the screw rod (4), and the diameter of the threaded sleeve (11) is larger than the diameter of the movable grooves (8).

3. The combined tooling capable of positioning any outer circle to the center of rotation according to claim 1, characterized in that: The lower surface of each pressing plate (5) is fixedly sleeved with a protective thick copper sheet.

4. The combined tooling capable of positioning any outer circle to the center of rotation according to claim 1, characterized in that: The upper surface of each fixed block (6) is provided with two positioning grooves (9), and the lower surface of each positioning block (2) is fixedly connected with a positioning protrusion (10), and the positioning grooves (9) match the positioning protrusions (10).

5. The combined tooling capable of positioning any outer circle to the center of rotation according to claim 1, characterized in that: The positioning block (2) and the fixing block (6) can be fixedly connected by means of hexagon socket bolts.

6. The combined tooling capable of positioning any outer circle to the center of rotation according to claim 1, characterized in that: The material of the positioning block (2) is 4130 steel, and the surface of the positioning block (2) is subjected to a sharp angle blunting and burr removal process.

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