Technical realization elements of high-precision center guide sleeve for workpiece positioning and drilling

Technical realization elements:

6. The purpose of this utility model is to provide a high-precision center guide sleeve for positioning and drilling of a workpiece, which can accurately locate the punching point on the workpiece, and can avoid the force and distortion during the positioning of the sample, and ensure the sample The accuracy of punch positioning, and the device can reduce manual errors, even if the punch is hammered, it can ensure the accuracy of the punch and punch points.

7. The utility model is realized as follows: a high-precision center guide sleeve for positioning and drilling a workpiece, including:

8. The center guide sleeve is a cylindrical structure with a guide hole inside. The guide hole penetrates both ends of the center guide sleeve. The guide hole is coaxial with the center guide sleeve. Sample punch

9. The positioning frame is fixedly sleeved on the outside of one end of the center guide sleeve, and a plurality of positioning knives are fixed on the outside, the closest neighboring positioning knives are perpendicular to each other, and the two opposing positioning knives are on the same straight line. , The bottom of each positioning knife is provided with a knife edge;

10. The blades of a plurality of the positioning knives are on the same plane, and the plane of all the blades is perpendicular to the axis of the guide hole.

11. Further, the sample punch slides up and down in the guide hole, and there is a transitional fit between the sample punch and the guide hole; the length of the center guide sleeve is not less than 3 cm.

12. Further, the positioning frame and the positioning knife are an integral structure, and the positioning frame and the center guide sleeve are also an integral structure.

13. Further, the positioning frame is provided with four positioning knives, and the included angle between each of the positioning knives is 90 degree

14. Further, the thickness of the blade is in the range of 0.3

1.5mm, the thickness of the positioning knife is 2 Between 5mm.

15. Further, the central guide sleeve has a plurality of replacement parts with different sizes, and the guide hole in the central guide sleeve of each replacement part and the sample punches of different diameters are transitional fits.

16. Further, a center drill can be detachably inserted into the guide hole of the center guide sleeve, and the center drill and the guide hole are in clearance fit.

17. The beneficial effects of this utility model are: 1. The utility model can accurately position the points that need to be punched through the four positioning knives that are perpendicular to each other. The horizontal and vertical coordinates are used to determine the intersection point to ensure The positioning is accurate, as long as the four horizontal and vertical positioning knives on the device are aligned with the positioning alignment on the workpiece, the intersection of the axis of the center guide sleeve and the workpiece is the positioning point that needs to be punched, and the positioning is more accurate;

18.2. This device only needs to use a sample punch for positioning and punching at the guide hole of the center guide sleeve, which is easy to operate. The length of the center guide sleeve of this device is long enough to ensure the verticality of the punch when the punch is punched. , As long as the stable support of the center guide sleeve is ensured, it can ensure that the punching and punching process will not deviate, and the guide hole has the effect of guiding and correcting the hammering force, reducing artificial errors and ensuring the punching point position Precise.

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