Two-edge step drill for drilling and forming

Abstract

The utility model discloses a two-blade step drill for drilling and forming, which comprises a mounting block and a plurality of step drill bodies around the mounting block, a clamping plate is fixedly arranged on each step drill body, a clamping hole is formed in each clamping plate in a penetrating manner, a plurality of clamping grooves are formed in the side surface of the mounting block, and the clamping holes are communicated with the clamping grooves. The multiple clamping grooves are evenly distributed in the circumferential direction, and the clamping plates and the clamping grooves are arranged in a matched mode. A plurality of step drill bodies of different specifications are fixedly connected together, when the step drill bodies are replaced and used, the step drill bodies only need to be taken down and adjusted to change the direction, rummaging in a storage box is not needed, the working efficiency is improved, the step drill bodies are not prone to being lost due to fixed connection, and the step drill bodies can be replaced when damaged; and a common step drill body can be connected according to machining requirements.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of step drill, specifically relates to a two-blade step drill for drilling forming. BACKGROUND

[0002] Two-blade step drill, also known as two-blade stepped drill, is a kind of efficient drilling tool. Its design features are that there are two or more contours on the outer layer, and the inside is composed of double-sided cutters, which can be used to gradually enlarge the size of the hole and ensure the smoothness of the hole wall. Two-blade step drill not only has high cutting edge strength and good chip removal effect, but also has high machining precision and strong universality, and is suitable for drilling of various materials such as steel, aluminum and copper. Especially in thin steel plate drilling, it performs well, can simplify the processing procedure and improve production efficiency.

[0003] The existing step drill is mostly separately arranged. In actual operation, when different specifications of step drill need to be replaced, the operator often needs to search repeatedly in the tool box, which is time-consuming and laborious, and greatly reduces the work efficiency. More inconveniently, the independently designed step drill is easy to be lost due to scattered storage, which indirectly increases the production cost. UTILITY MODEL CONTENTS

[0004] (1) Technical problem to be solved

[0005] In view of the shortcomings of the prior art, the utility model aims at providing a two-blade step drill for drilling forming, which fixes and connects multiple step drill bodies of different specifications together. When replacing and using, only the direction needs to be changed, without searching in the storage box, the work efficiency is improved, and the fixed connection makes it less likely to be lost.

[0006] (2) Technical scheme

[0007] In order to solve the above technical problems, the utility model provides a two-blade step drill for drilling forming, which comprises a mounting block and a plurality of step drill bodies around the mounting block. A clamping plate is fixedly arranged on the step drill body. A clamping hole is arranged through the clamping plate. A plurality of clamping grooves are arranged on the side surface of the mounting block. The clamping grooves are evenly distributed in a circle. The clamping plate and the clamping groove are arranged in cooperation.

[0008] Preferably, positioning plates are arranged on both sides of the mounting block. A plurality of clamping blocks are fixedly arranged on the inner side of the positioning plate. Positioning holes are arranged through both sides of the clamping groove. The clamping blocks are arranged by clamping into the positioning holes.

[0009] Further, a first through hole is arranged through the mounting block. A second through hole is arranged through the positioning plate. A bolt is movably arranged in the first through hole and the second through hole. A nut is threadedly connected to the bolt.

[0010] Further, the outer end of the clamping block is provided with an inclined surface, which is matched with the clamping hole.

[0011] Further, the inner bottom of the clamping groove is fixedly provided with an extrusion pad, which is tightly arranged against the clamping plate.

[0012] Advantages

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] By fixing and connecting multiple different step drill bodies together, when different step drill bodies are used, only the direction needs to be changed, without searching in the storage box, work efficiency is improved, and the fixed connection together is less likely to be lost.

[0015] By setting the clamping plate and the clamping block, the clamping plate is inserted into the clamping groove, and then the clamping block is used to fix the clamping plate, so that the step drill body can be fixed, and the clamping block can be pulled out, so that the step drill body can be removed, which is simple to operate, convenient to replace when damaged, and can connect multiple commonly used step drill bodies according to processing needs, thereby increasing practicability. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a perspective view of the utility model.

[0017] Figure 2 is an exploded view of the utility model.

[0018] Figure 3 is a sectional view of the mounting block in the utility model.

[0019] Figure 4 is a perspective view of the positioning plate in the utility model.

[0020] The marks in the drawings are: 1, mounting block; 2, step drill body; 3, clamping plate; 4, clamping hole; 5, clamping groove; 6, extrusion pad; 7, positioning hole; 8, positioning plate; 9, clamping block; 10, inclined surface; 11, first through hole; 12, second through hole; 13, bolt; 14, nut. DETAILED DESCRIPTION

[0021] This specific embodiment is a two-blade step drill for drilling and forming, and a structure diagram is as shown in Figures 1-4As shown, including the installation block 1 and the installation block 1 around the plurality of stepped drill body 2, a plurality of stepped drill body 2 is uniformly distributed in the circle, the stepped drill body 2 is fixedly provided with the clamping plate 3, the clamping plate 3 is provided with the clamping hole 4, the side of the installation block 1 is provided with a plurality of clamping grooves 5, a plurality of clamping grooves 5 is uniformly distributed in the circle, the clamping plate 3 is matched with the clamping groove 5, the clamping plate 3 is slidably arranged with the inner wall of the clamping groove 5, the inner bottom of the clamping groove 5 is fixedly provided with the extrusion pad 6, the extrusion pad 6 is tightly arranged with the clamping plate 3, the clamping plate 3 is pressed tightly on the extrusion pad 6, which can avoid the clamping plate 3 from loosening during use;

[0022] The two sides of the installation block 1 are provided with the positioning plate 8, the inner side of the positioning plate 8 is fixedly provided with a plurality of clamping blocks 9, the outer end of the clamping block 9 is provided with the inclined surface 10, the inclined surface 10 is matched with the clamping hole 4, so that the inclined surface 10 extrudes one side of the clamping hole 4, the clamping plate 3 can be extruded and pushed into the clamping groove 5, thereby pressing the extrusion pad 6 tightly, the two sides of the clamping groove 5 are provided with the positioning hole 7, the clamping block 9 is arranged by being clamped into the positioning hole 7, so that the plurality of clamping blocks 9 can be clamped into the corresponding positioning hole 7 respectively;

[0023] The first through hole 11 is provided on the installation block 1, the second through hole 12 is provided on the positioning plate 8, the bolt 13 is movably arranged in the first through hole 11 and the second through hole 12, the nut 14 is threadedly connected on the bolt 13.

[0024] Working principle:

[0025] 1, during installation, the clamping plate 3 on the plurality of stepped drill bodies 2 is inserted into the corresponding clamping groove 5 in sequence, then the plurality of clamping blocks 9 on the two positioning plates 8 are inserted into the corresponding positioning holes 7 on the two sides, then the bolt 13 is passed through the first through hole 11 and the two second through holes 12, and finally the nut 14 is screwed onto the bolt 13;

[0026] 2, during tightening, the inclined surface 10 on the clamping block 9 will extrude the corresponding clamping hole 4, and the clamping plate 3 will be extruded and pushed into the clamping groove 5, and the extrusion pad 6 will be pressed tightly, until the clamping block 9 on both sides is completely clamped into the corresponding clamping hole 4, and the bolt 13 and the nut 14 are tightened, so as to fix the plurality of stepped drill bodies 2;

[0027] 3, during use, one of the stepped drill bodies 2 is inserted into the drill bit installation position of the drilling equipment, and the drill handle of the stepped drill body 2 is clamped and fixed by the drilling equipment, then the opposite stepped drill body 2 can be used for drilling operation;

[0028] 4, during disassembly, the bolt 13 and the nut 14 are unscrewed, and the plurality of clamping blocks 9 are pulled out through the two positioning plates 8, then the plurality of stepped drill bodies 2 can be removed.

[0029] All the technical features in the embodiment can be freely combined according to actual needs.

[0030] The above embodiment is a preferred implementation scheme of the present application, in addition to this, the present application can be implemented in other ways, and any obvious replacement without departing from the technical scheme concept is within the protection scope of the present application.

Claims

1. A two-lip stepped drill for hole forming, characterized by: The utility model provides a step drill body (2) of mounting block (1) and the four around of mounting block (1) a plurality of, fixedly arranged card board (3) on step drill body (2), through the card hole (4) of being arranged on card board (3), the side of mounting block (1) is provided with a plurality of card slot (5), a plurality of card slot (5) is evenly distributed in circumference, card board (3) is matched with card slot (5) arrangement.

2. The two-blade stepped drill for hole forming according to claim 1, characterized by The both sides of mounting block (1) are provided with positioning plate (8), the inner side of positioning plate (8) is fixedly provided with a plurality of clamping block (9), the both sides of card slot (5) are provided with positioning hole (7) through, clamping block (9) is set in positioning hole (7) and is arranged.

3. The two-blade stepped drill for hole forming according to claim 2, characterized by The first through -hole (11) is set through on mounting block (1), the second through -hole (12) is set through on positioning plate (8), the first through -hole (11) and second through -hole (12) are movably arranged bolt (13), the nut (14) of screw thread is connected on bolt (13).

4. The two-point stepped drill for hole forming according to claim 2, wherein The outer end of clamping block (9) is provided with inclined plane (10), and the inclined plane (10) is matched with the card hole (4) and is arranged.

5. The two-point stepped drill for hole forming according to claim 1, wherein The inner bottom of card slot (5) is fixedly provided with extrusion pad (6), and the extrusion pad (6) is arranged tightly against the card board (3).

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