CNC high-precision repeat positioning jig

Abstract

The utility model discloses a kind of CNC high-precision repeat positioning fixtures, including adsorption platform, vertical positioning backplate, horizontal positioning backplate and auxiliary positioning frame are installed on adsorption platform, vertical positioning backplate is vertically fixed and installed on adsorption platform left side, horizontal positioning backplate is horizontally fixed and installed on adsorption platform upside, the auxiliary positioning frame includes Y axis connecting rod, left side connecting rod and right side connecting rod, Y axis connecting rod, left side connecting rod and right side connecting rod are respectively passed through hinged by hinged fastening shaft, Y axis connecting rod, left side connecting rod and right side connecting rod end bottom are respectively fixed and installed with the high-precision tungsten steel bar of same size. The utility model solves the problem of traditional clamping slow, high-precision auxiliary positioning frame can be removed after part positioning, solves the problem that part appearance processing is restricted, and the precision of secondary clamping is high, Y axis connecting rod, left side connecting rod and right side connecting rod can adjust high-precision tungsten steel rod position according to product size.

Description

Technical Field

[0001] This utility model relates to the field of CNC positioning fixture technology, and in particular to a high-precision CNC repeatable positioning fixture. Background Technology

[0002] The existing CNC positioning clamping method for products involves placing the workpiece on an adsorption platform and then using a dial indicator to level the workpiece. This leveling process requires high skill levels from operators and personnel, is slow, results in long machine downtime, and is inefficient.

[0003] Furthermore, when there are multiple parts, secondary clamping cannot achieve the same positioning, requiring a dial indicator to be used to level and re-clamp each time, which is time-consuming, labor-intensive, and inefficient. On the other hand, using a traditional backing plate for secondary clamping restricts the machining of the part's shape due to the tight fit against the backing plate, limiting the machining of parts, and the clamping time is long, which is not conducive to the mass production of parts. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model designs a CNC high-precision repeatable positioning fixture.

[0005] The present invention adopts the following technical solution:

[0006] A CNC high-precision repeatable positioning fixture includes an adsorption platform. A vertical positioning plate, a horizontal positioning plate, and an auxiliary positioning frame are mounted on the adsorption platform. The vertical positioning plate is vertically fixedly installed on the left side of the adsorption platform, and the horizontal positioning plate is horizontally fixedly installed on the upper side of the adsorption platform. The auxiliary positioning frame includes a Y-axis connecting rod, a left connecting rod, and a right connecting rod. The Y-axis connecting rod, the left connecting rod, and the right connecting rod pass through the hinge through a hinge fastening shaft. High-precision tungsten steel rods of the same size are fixedly installed at the bottom of the ends of the Y-axis connecting rod, the left connecting rod, and the right connecting rod.

[0007] Preferably, the high-precision tungsten carbide rod has a central hole, through which a tungsten carbide rod fixing screw passes and is fixed.

[0008] Preferably, the Y-axis connecting rod, the left connecting rod, and the right connecting rod are each provided with an oblong hole, and the hinge fastening shaft passes through the oblong holes of the Y-axis connecting rod, the left connecting rod, and the right connecting rod and is adjusted and locked.

[0009] Preferably, the hinge fastening shaft includes a knob fixing screw and a fixing nut, which are engaged to lock the hinge.

[0010] Preferably, the locking connection between the button fixing screw and the fixing nut has a handle.

[0011] Preferably, the adsorption platform is a magnetic platform.

[0012] Preferably, the vertical positioning plate and the horizontal positioning plate are fixedly installed on the adsorption platform by bolts.

[0013] The beneficial effects of this utility model are: (1) This utility model solves the problem of slow traditional clamping speed by changing the traditional scanning clamping method to a mobile positioning fixture method. The high-precision auxiliary positioning frame can be moved and removed after the part is positioned, which solves the problem of limited part shape processing; (2) Secondary clamping can be repeatedly positioned. The traditional surface contact is changed to line contact, and the repeat positioning accuracy is high. The repeat clamping positioning accuracy can reach 0.005mm. The clamping speed is fast, which improves the machine tool utilization rate; (3) The left connecting rod and the right connecting rod can be adjusted to the appropriate position according to the product size. The Y-axis connecting rod can be adjusted to the appropriate angle according to the product size to ensure the accuracy of secondary clamping. Attached Figure Description

[0014] Figure 1 This is a perspective view of the present invention;

[0015] Figure 2 This is a front view of the present invention;

[0016] Figure 3 This is an exploded view of this utility model;

[0017] In the diagram: 1. Magnetic platform, 2. Vertical positioning plate, 3. Horizontal positioning plate, 4. Y-axis connecting rod, 5. Left connecting rod, 6. Right connecting rod, 7. Hinge fastening shaft, 8. High-precision tungsten carbide rod, 9. Handle, 10. Knob fixing screw, 11. Fixing nut, 12. Tungsten carbide rod fixing screw, 13. Workpiece to be processed. Detailed Implementation

[0018] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings:

[0019] Example: Figures 1-3 As shown, a CNC high-precision repeatable positioning fixture includes a magnetic platform 1. A vertical positioning plate 2, a horizontal positioning plate 3, and an auxiliary positioning frame are mounted on the magnetic platform. The vertical positioning plate is vertically fixed on the left side of the magnetic platform, and the horizontal positioning plate is horizontally fixed on the upper side of the magnetic platform. The auxiliary positioning frame includes a Y-axis connecting rod 4, a left connecting rod 5, and a right connecting rod 6. The Y-axis connecting rod, the left connecting rod, and the right connecting rod pass through the hinge through a hinge fastening shaft 7. High-precision tungsten steel rods 8 of the same size are fixedly installed at the bottom of the ends of the Y-axis connecting rod, the left connecting rod, and the right connecting rod.

[0020] A high-precision tungsten carbide rod has a central hole, through which a tungsten carbide rod fixing screw 12 passes and is fixed.

[0021] The Y-axis connecting rod, the left connecting rod, and the right connecting rod are each provided with an oblong hole. The hinge fastening shaft passes through the oblong holes of the Y-axis connecting rod, the left connecting rod, and the right connecting rod and is adjusted and locked.

[0022] The hinge fastening shaft includes a knob fixing screw 10 and a fixing nut 11, which are engaged to lock together. A handle 9 is provided for the locking connection between the knob fixing screw and the fixing nut.

[0023] In use, the vertical and horizontal positioning plates are first fixed to the left and top sides of the magnetic platform with bolts, respectively. The fixing screws are then adjusted by rotating the knobs to position the left and right connecting rods according to the product size, and the Y-axis connecting rod is adjusted to a suitable angle. The fixing screws are then tightened, and the high-precision tungsten carbide rods of the auxiliary positioning frame are placed against the vertical and horizontal positioning plates. The product to be processed 13 is then placed on the magnetic platform, with its left and top sides adhering to the corresponding high-precision tungsten carbide rods. The auxiliary positioning frame is then removed by lifting it with the handle, completing the rapid positioning of the product. The above operation is repeated for secondary clamping, making it convenient and quick. The clamping speed is fast, and the repeated clamping accuracy is high, solving the problem of limited part shape processing.

[0024] The embodiments described above are merely preferred solutions of this utility model and are not intended to limit this utility model in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A CNC high-precision repeatable positioning fixture, comprising an adsorption platform, characterized in that, The adsorption platform is equipped with a vertical positioning plate, a horizontal positioning plate, and an auxiliary positioning frame. The vertical positioning plate is vertically fixed on the left side of the adsorption platform, and the horizontal positioning plate is horizontally fixed on the upper side of the adsorption platform. The auxiliary positioning frame includes a Y-axis connecting rod, a left connecting rod, and a right connecting rod. The Y-axis connecting rod, the left connecting rod, and the right connecting rod pass through the hinge through a hinge fastening shaft. High-precision tungsten steel rods of the same size are fixedly installed at the bottom of the ends of the Y-axis connecting rod, the left connecting rod, and the right connecting rod.

2. The CNC high-precision repeatable positioning fixture according to claim 1, characterized in that, The high-precision tungsten carbide rod has a central hole, through which a tungsten carbide rod fixing screw passes and is fixed.

3. The CNC high-precision repeatable positioning fixture according to claim 1, characterized in that, The Y-axis connecting rod, the left connecting rod, and the right connecting rod are each provided with an oblong hole. The hinge fastening shaft passes through the oblong holes of the Y-axis connecting rod, the left connecting rod, and the right connecting rod and is adjusted and locked.

4. The CNC high-precision repeatable positioning fixture according to claim 1, characterized in that, The hinge fastening shaft includes a knob fixing screw and a fixing nut, which are engaged to lock the hinge in place.

5. The CNC high-precision repeatable positioning fixture according to claim 4, characterized in that, The locking connection between the button fixing screw and the fixing nut has a handle.

6. The CNC high-precision repeatable positioning fixture according to claim 1, characterized in that, The adsorption platform is a magnetic platform.

7. The CNC high-precision repeatable positioning fixture according to claim 1, characterized in that, The vertical positioning plate and the horizontal positioning plate are fixedly installed on the adsorption platform by bolts.

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