A locator for blade hole polishing

Abstract

A kind of locator for grinding blade hole, including disc, the lower end surface of disc is shaped with lower round seat, the upper end surface of disc is shaped with placement table, the upper end of placement table is equipped with placement slot, placement slot is equipped with through hole, through hole is coaxial with disc, one of the plane of placement table is connected with a pair of fixed screw by screw thread, fixed screw is equipped with inner top end plate, another plane of placement table is connected with a pair of connecting screw by screw thread, connecting screw is equipped with inner top side plate, the inside of inner top side plate is shaped with convex part, convex part and inner top end plate are respectively located at both ends of placement slot.The utility model discloses when fixing blade, one end is positioned by convex part, and the other end is positioned by inner top plate, and when being positioned by inner top plate, also be constrained to the slope of V-shaped part by the V-shaped limiting slot provided on it, so it can ensure that round hole and through hole are coaxial, in addition, this positioning mode has the effect of convenient disassembly and positioning.

Description

Technical Field

[0001] This utility model relates to the field of blade processing technology, and in particular to a positioning device for grinding blade holes. Background Technology

[0002] like Figure 6 This is a three-dimensional structural diagram of a cutting blade. The blade includes a rectangular portion 9, one end of which is integrally formed with a V-shaped portion 90. Cutting edges are formed on both sides (i.e., the beveled edges) of the V-shaped portion 90. The blade also has a circular hole 91. The blade is made of cemented carbide, formed first by isostatic pressing and then by sintering. The circular hole 91 cannot be formed before the cutting process; therefore, it must be formed through subsequent grinding operations, i.e., by machining the circular hole 91 using a grinding machine. Since the circular hole 91 is a mounting hole, it has strict dimensional and positional requirements. A key requirement is that the center of the circular hole 91 must be located on the centerline of the rectangular portion 9, and this centerline allows the V-shaped portion 90 and the rectangular portion 9 to be cut into two symmetrical halves. Currently, during grinding, low positioning accuracy leads to a problem of the center point shifting off the centerline, and this shift is difficult to correct later. Utility Model Content

[0003] This utility model provides a positioner for grinding blade holes, which solves the shortcomings of the prior art and addresses the problem of insufficient precision requirements when grinding round holes, thus having strong practicality.

[0004] In order to achieve the purpose of this utility model, the following technology is proposed to be adopted: A locator for grinding blade holes includes a disc, a lower circular seat formed on the lower end face of the disc, a placement platform formed on the upper end face of the disc, a placement groove formed on the upper end of the placement platform, a through hole formed on the bottom of the placement groove, the through hole being coaxial with the disc, the placement groove being open at both ends along its length, and the placement platform being parallel planes on opposite sides. One of the planes of the placement platform is connected to a pair of fixing screws by thread, and an inner top plate is fitted on the fixing screws; Another plane of the placement platform is connected to a pair of connecting screws by threads. An inner top side plate is fitted on the connecting screws, and a protrusion is formed on the inner side of the inner top side plate. The protrusion and the inner top plate are located at the two ends of the placement groove, respectively.

[0005] Furthermore, an inner top plate is formed on the inner side of the inner top plate.

[0006] Furthermore, a V-shaped limiting groove is formed on the inner end of the inner top plate.

[0007] Furthermore, a T-shaped groove is provided on the inner wall of the inner top side plate, and a T-shaped block is movably disposed in the T-shaped groove. An inner pressure side plate is formed on the T-shaped block. The outer wall of the inner pressure side plate is a slope, and the inner end of the slope extends inward at an incline. The inner wall of the inner pressure side plate is a plane, and the side wall of one end of the groove is an inclined surface, with the inner end of the inclined surface extending inward at an incline. The outer wall of the inner pressure side plate abuts against the inclined surface.

[0008] The advantages of the above technical solution are: When fixing the blade, one end is positioned by the protrusion, and the other end is positioned by the inner top plate. When positioning by the inner top plate, the inclined surface of the V-shaped part is constrained by the V-shaped limiting groove provided on it. This ensures that the round hole and the through hole are coaxial. In addition, this positioning method has the effect of facilitating disassembly and positioning.

[0009] This invention also utilizes the inward movement of the inclined surface and the inner top side plate. When the inner top side plate moves inward, the inclined surface acts on the inner pressure side plate, thereby causing the inner pressure side plate to act on both sides of the rectangular part. This not only improves the positioning effect but also enhances the stability after positioning. Attached Figure Description

[0010] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will provide a further detailed description of this utility model in conjunction with the accompanying drawings.

[0011] Figure 1 A three-dimensional structural diagram of one embodiment is shown.

[0012] Figure 2 The three-dimensional structure of the disk is shown. Figure 1 .

[0013] Figure 3 The three-dimensional structure of the disk is shown. Figure 2 .

[0014] Figure 4 A three-dimensional structural diagram of the inner pressure side plate is shown.

[0015] Figure 5 A three-dimensional structural diagram of the inner top plate is shown.

[0016] Figure 6 A three-dimensional structural diagram of the blade is shown. Detailed Implementation

[0017] like Figures 1-6As shown, a locator for grinding blade holes includes a disc 1. A lower circular seat 10 is formed on the lower end face of the disc 1, and a placement platform 12 is formed on the upper end face of the disc 1. A placement groove 13 is provided at the upper end of the placement platform 12, and a through hole 11 is provided at the bottom of the placement groove 13. The through hole 11 is coaxial with the disc 1. The two ends of the placement groove 13 are open in the length direction, and the two sides of the placement platform 12 are parallel planes.

[0018] One of the planes of the placement platform 12 is connected by a pair of fixing screws 15 by thread. An inner top plate 16 is fitted on the fixing screws 15. An inner top plate 17 is formed on the inner side of the inner top plate 16. A V-shaped limiting groove 170 is formed on the inner end of the inner top plate 17. The inner top plate 17 is located in the placement groove 13.

[0019] Another plane of the placement platform 12 is connected by a pair of connecting screws 19 via threads. An inner top side plate 18 is fitted on the connecting screws 19. A protrusion 23 is formed on the inner side of the inner top side plate 18. The protrusion 23 is located in the placement groove 13. A T-shaped groove 20 is opened in the inner wall of the inner top side plate 18. A T-shaped block 21 is movably arranged in the T-shaped groove 20. An inner pressure side plate 22 is formed on the T-shaped block 21. The outer wall of the inner pressure side plate 22 is a slope, and the inner end of the slope extends inward at an incline. The inner wall of the inner pressure side plate 22 is a plane. One end of the placement groove 13 is an inclined surface 14, and the inner end of the inclined surface 14 extends inward at an incline. The outer wall of the inner pressure side plate 22 abuts against the inclined surface 14.

[0020] In this embodiment, when the operator places the blade in the placement groove 13, the V-shaped part of the blade faces the end of the placement groove 13 that is parallel to the constraint plane 140 on both sides. When placing the blade, the round hole 91 and the through hole 11 are roughly aligned.

[0021] Then, the operator fixes the inner top plate 16 to the placement table 12 with fixing screws 15. After fixing, the blade can be moved so that the inclined surface of the V-shaped part abuts against the inner side of the V-shaped limiting groove 170.

[0022] Next, the operator fixes the inner top side plate 18 to the placement table 12 using connecting screws 19. During the fixing process, the inclined surface 14 will act on the inclined surface of the inner pressure side plate 22, thereby causing the inner pressure side plate 22 to move closer to the blade until the blade is limited by the inner pressure side plate 22. At this time, the inner end of the protrusion 23 will act on the end of the rectangular part 9, and finally fix the blade in the placement groove 13.

[0023] Finally, the lower round seat 10 is clamped by the three-jaw chuck on the grinding machine, and then the round hole 91 is machined to remove grinding chips.

[0024] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations of this utility model fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A positioning device for grinding blade holes, characterized in that, Includes a disc (1), the lower end face of the disc (1) is formed with a lower circular seat (10), the upper end face of the disc (1) is formed with a placement platform (12), the upper end of the placement platform (12) is provided with a placement groove (13), the bottom of the placement groove (13) is provided with a through hole (11), the through hole (11) is coaxial with the disc (1), the two ends of the placement groove (13) are open in the length direction, and the two sides of the placement platform (12) are parallel planes to each other. One of the planes of the placement platform (12) is connected by a pair of fixing screws (15) by thread, and an inner top plate (16) is fitted on the fixing screws (15). Another plane of the placement platform (12) is connected by a pair of connecting screws (19) by thread. An inner top side plate (18) is fitted on the connecting screws (19), and a protrusion (23) is formed on the inner side of the inner top side plate (18). The protrusion (23) and the inner top plate (16) are located at the two ends of the placement groove (13), respectively.

2. The locator for grinding blade holes according to claim 1, characterized in that, The inner top plate (17) is formed on the inner side of the inner top plate (16).

3. The locator for grinding blade holes according to claim 2, characterized in that, The inner end of the inner top plate (17) is formed with a V-shaped limiting groove (170).

4. The locator for grinding blade holes according to claim 1, characterized in that, The inner top side plate (18) has an open T-shaped groove (20) on its inner wall. A T-shaped block (21) is movably arranged in the T-shaped groove (20). An inner pressure side plate (22) is formed on the T-shaped block (21). The outer wall of the inner pressure side plate (22) is a slope, and the inner end of the slope extends inward. The inner wall of the inner pressure side plate (22) is a plane. One end of the groove (13) has an inclined surface (14), and the inner end of the inclined surface (14) extends inward. The outer wall of the inner pressure side plate (22) abuts against the inclined surface (14).

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