Step drill

Abstract

The present application discloses a step drill, which relates to the field of mechanical processing technology. The utility model comprises a blade, a disassembly mechanism is provided at one end of the blade, a connecting mechanism is fixedly provided at one side of the disassembly mechanism, the connecting mechanism comprises a fixing plate, two bidirectional threaded rods are rotatably provided at one side of the fixing plate, two sliding plates are provided on the outer surfaces of the two bidirectional threaded rods, a connecting plate is provided at one side of the fixing plate, two sliding clamping plates are fixedly provided at one side of the connecting plate, and a clamping plate is fixedly provided at one side of the connecting plate. The utility model uses the connecting mechanism to make the connecting plate on the electric tool fit with the fixing plate when the step drill needs to be connected to the electric tool, so that the step drill can be well fixed to the connection part of the electric tool, and the disassembly mechanism is used to make the nut on the bolt be unscrewed when the step drill needs to be disassembled, so that the step drill can be well disassembled and replaced.

Description

Technical Field

[0001] The present application relates to the field of mechanical processing technology, in particular to a step drill. Background Art

[0002] Step drill bits are used in a wide variety of applications and industries where the user may need to drill holes through thin-walled workpieces. Step drill bits allow the user to drill holes in a progressive range of sizes with a single drill bit. Step drill bits can be attached to power tools, such as electric drills or impact drivers.

[0003] After checking the announcement number: CN211464929U, a step drill is disclosed. This technology discloses "including a shank and a body, the shank extends along the axis of the drill, and the body has a proximal end adjacent to the shank and a distal end opposite to the proximal end. The body defines a plurality of axially stacked steps with gradually increasing sizes, the steps include a first step located at the distal end and a terminal step located at the proximal end, and the drill also includes a chip flute located at the body. The chip flute defines an elongated groove extending from the distal end to the proximal end. The drill also includes a plurality of cutting edges formed on the body. Each cutting edge is arranged along one of the plurality of steps and defines a helix angle and a rake angle. The helix angle of the cutting edge at the terminal step is greater than the helix angle of the cutting edge at the first step, and other technical solutions, the drill has a ratio of the helix angle of the cutting edge at the first step to the rake angle in the range of 0.5 to 2.4, and a ratio of the helix angle of the cutting edge at the terminal step to the rake angle in the range of 0.9 to 1.7, and other technical effects";

[0004] With respect to the above-mentioned related technologies, the inventors believe that when the step drills in the prior art are drilling, most of the step drills cannot be well fixed to the connection part of the electric tool, which causes the step drill to easily loosen during drilling, thereby causing the step drill to easily fall off during the drilling process. Moreover, when the step drills in the prior art are drilling, most of the step drills cannot be well disassembled and replaced, resulting in the step drill cannot be quickly disassembled when it needs to be replaced, resulting in poor convenience of the step drill. Utility Model Content

[0005] The purpose of the present application is to provide a step drill to improve the problem that most step drills cannot be well fixed to the connection part of the electric tool and most step drills cannot be well disassembled and replaced.

[0006] The step drill provided in this application adopts the following technical solution:

[0007] A step drill comprises a blade body, one end of which is provided with a disassembly mechanism, one side of which is fixedly provided with a connecting mechanism, the connecting mechanism comprising a fixing plate, one side of which is rotatably provided with two bidirectional threaded rods, the outer surfaces of the two bidirectional threaded rods are each provided with two sliding plates, one side of the fixing plate is provided with a connecting plate, one side of the connecting plate is fixedly provided with two sliding clamping plates, and one side of the connecting plate is fixedly provided with a clamping plate.

[0008] By adopting the above technical solution, through the connecting mechanism, under the action of the bidirectional threaded rod, when the step drill needs to be connected to the electric tool, the connecting plate on the electric tool is fitted with the fixed plate, so that the clamping plate can slide and limit in the clamping groove, and the sliding clamping plate can be limited in the sliding groove. Then, the bidirectional threaded rod is rotated, so that the sliding plate can move on the outer surface of the bidirectional threaded rod through the thread groove, so that the sliding plate can limit and fix the sliding clamping plate in the sliding groove, thereby achieving the purpose of fixing the step drill well to the connection point of the electric tool.

[0009] Optionally, the disassembly mechanism includes a limit plate, a limit clamping plate is provided inside the limit plate, and one side of the limit clamping plate is fixedly connected to one end of the blade body, two bolts are provided at the upper end of the limit plate, nuts are threadedly sleeved on the outer surfaces of the two bolts, a stepped groove is provided on the outer surface of the blade body, and two liquid injection ports are provided at one end of the blade body.

[0010] By adopting the above technical scheme, through the disassembly mechanism, under the action of the limiting clamping plate, when the step drill needs to be disassembled, the nut on the bolt is unscrewed, so that the bolt can be disengaged from the positioning groove on the limiting plate and the positioning groove on the limiting clamping plate, so that the limiting clamping plate can be disengaged from the limiting groove, and the step drill can be replaced. The step drill can drill better through the step groove, and the drilling location can be cooled through the liquid injection port, thereby achieving the purpose of the step drill being able to be well disassembled and replaced.

[0011] Optionally, one side of the four sliding plates is provided with a thread groove, and the outer surfaces of every two thread grooves are respectively threadably fitted with the outer surfaces of the two bidirectional threaded rods.

[0012] By adopting the above technical solution, the bidirectional threaded rod can rotate on the inner surface of the thread groove through the thread groove.

[0013] Optionally, a snap-fit ​​groove is provided on one side of the fixing plate, and the inner surface of the snap-fit ​​groove is slidably fitted with the outer surface of the snap-fit ​​plate.

[0014] By adopting the above technical solution, the engaging plate can slide and limit on the inner surface of the engaging groove through the engaging groove.

[0015] Optionally, two sliding grooves are provided on one side of the fixed plate, and the inner surface of each sliding groove is slidably fitted with the outer surfaces of the two sliding plates respectively.

[0016] By adopting the above technical solution, the sliding plate can slide on the inner surface of the sliding groove through the sliding groove.

[0017] Optionally, a limiting groove is provided on one side of the limiting plate, and the inner surface of the limiting groove is slidably fitted with the outer surface of the limiting clamping plate.

[0018] By adopting the above technical solution, the limiting clamping plate can slide on the inner surface of the limiting groove through the limiting groove.

[0019] Optionally, two positioning grooves are provided at the upper end of the limiting plate, and inner surfaces of the two positioning grooves are respectively slidably fitted with outer surfaces of the two bolts.

[0020] By adopting the above technical solution, the bolt can slide on the inner surface of the positioning groove through the positioning groove.

[0021] Optionally, two positioning slots are provided at the upper end of the limit clamping plate, and inner surfaces of the two positioning slots are respectively slidably fitted with outer surfaces of the two bolts.

[0022] By adopting the above technical solution, the bolt can slide on the inner surface of the positioning slot through the positioning slot.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The utility model uses a connecting mechanism, under the action of a bidirectional threaded rod, so that when the step drill needs to be connected to the electric tool, the connecting plate on the electric tool is fitted with the fixing plate, so that the clamping plate can be slid and limited in the clamping groove, and the sliding clamping plate can be limited in the sliding groove, and then the bidirectional threaded rod is rotated, so that the sliding plate can move on the outer surface of the bidirectional threaded rod through the thread groove, so that the sliding plate can limit and fix the sliding clamping plate in the sliding groove, so that the step drill can be well fixed to the connection of the electric tool;

[0025] 2. The utility model uses a disassembly mechanism and, under the action of a limiting clamping plate, when the step drill needs to be disassembled, the nut on the bolt is unscrewed, so that the bolt can be disengaged from the positioning groove on the limiting plate and the positioning clamping groove on the limiting clamping plate, so that the limiting clamping plate can be disengaged from the limiting groove, and the step drill can be replaced. The step drill can drill better through the step groove, and the drilling location can be cooled through the liquid injection groove, so that the step drill can be well disassembled and replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the utility model.

[0027] Figure 2 It is a cross-sectional schematic diagram of the connection mechanism of the utility model.

[0028] Figure 3 It is a schematic diagram of the disassembly mechanism of the utility model.

[0029] In the figure, 1, blade; 2, connecting mechanism; 3, disassembly mechanism; 20, fixing plate; 21, bidirectional threaded rod; 22, threaded groove; 23, sliding plate; 24, sliding groove; 25, sliding clamping plate; 26, clamping plate; 27, connecting plate; 28, clamping groove; 30, limiting plate; 31, positioning groove; 32, bolt; 33, limiting groove; 34, limiting clamping plate; 35, step groove; 36, liquid filling port; 37, positioning clamping groove; 38, nut. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1 -Attached Figure 3 , further details of this application are given.

[0031] Example 1

[0032] Step drill, see Figure 1 and Figure 2 , including a blade body 1, a disassembly mechanism 3 is provided at one end of the blade body 1, a connection mechanism 2 is fixedly provided on one side of the disassembly mechanism 3, the connection mechanism 2 includes a fixed plate 20, two bidirectional threaded rods 21 are rotatably provided on one side of the fixed plate 20, two sliding plates 23 are provided on the outer surfaces of the two bidirectional threaded rods 21, a connecting plate 27 is provided on one side of the fixed plate 20, two sliding clamping plates 25 are fixedly provided on one side of the connecting plate 27, and a clamping plate 26 is fixedly provided on one side of the connecting plate 27. Through the connection mechanism 2, under the action of the bidirectional threaded rod 21, when the step drill is When the power tool needs to be connected, the connecting plate 27 on the power tool is fitted with the fixed plate 20, so that the locking plate 26 can slide and limit in the locking groove 28, and the sliding clamping plate 25 can be limited in the sliding groove 24. Then, the bidirectional threaded rod 21 is rotated, so that the sliding plate 23 can move on the outer surface of the bidirectional threaded rod 21 through the thread groove 22, so that the sliding plate 23 can limit and fix the sliding clamping plate 25 in the sliding groove 24, thereby achieving the purpose of fixing the step drill well to the connection point of the power tool.

[0033] Reference Figure 2 A thread groove 22 is formed on one side of each of the four sliding plates 23 , and the outer surfaces of each two thread grooves 22 are respectively threadedly fitted with the outer surfaces of two bidirectional threaded rods 21 , so that the bidirectional threaded rods 21 can rotate on the inner surfaces of the thread grooves 22 through the thread grooves 22 .

[0034] Reference Figure 2 A locking groove 28 is provided on one side of the fixing plate 20 , and the inner surface of the locking groove 28 is slidably fitted with the outer surface of the locking plate 26 , so that the locking plate 26 can slide and limit on the inner surface of the locking groove 28 through the locking groove 28 .

[0035] Reference Figure 2 Two sliding grooves 24 are provided on one side of the fixed plate 20 , and the inner surface of each sliding groove 24 is slidably fitted with the outer surfaces of the two sliding plates 23 , so that the sliding plates 23 can slide on the inner surfaces of the sliding grooves 24 through the sliding grooves 24 .

[0036] The implementation principle of the embodiment of the present application is: through the connecting mechanism 2, under the action of the bidirectional threaded rod 21, when the step drill needs to be connected to the power tool, the connecting plate 27 on the power tool is fitted with the fixed plate 20, so that the locking plate 26 can be slid and limited in the locking groove 28, and the sliding clamping plate 25 can be limited in the sliding groove 24, and then the bidirectional threaded rod 21 is rotated, so that the sliding plate 23 can move on the outer surface of the bidirectional threaded rod 21 through the thread groove 22, so that the sliding plate 23 can limit and fix the sliding clamping plate 25 in the sliding groove 24, thereby achieving the purpose of fixing the step drill well at the connection point with the power tool.

[0037] Example 2

[0038] The difference between this embodiment and embodiment 1 is that:

[0039] Reference Figure 3 The inner part of the limit plate 30 is provided with a limit card plate 34, and one side of the limit card plate 34 is fixedly connected to one end of the blade body 1. The upper end of the limit plate 30 is provided with two bolts 32, and the outer surfaces of the two bolts 32 are threadedly sleeved with nuts 38. The outer surface of the blade body 1 is provided with a step groove 35, and one end of the blade body 1 is provided with two injection ports 36. Through the disassembly mechanism 3, under the action of the limit card plate 34, when the step drill needs to be disassembled, the nut 38 on the bolt 32 is unscrewed, so that the bolt 32 can be disengaged from the positioning groove 31 on the limit plate 30 and the positioning groove 37 on the limit card plate 34, so that the limit card plate 34 can be disengaged from the limit groove 33, and the step drill can be replaced. The step drill can better drill through the step groove 35, and the drilling position can be cooled through the injection port 36, thereby achieving the purpose of the step drill being able to be well disassembled and replaced.

[0040] Reference Figure 3 A limiting groove 33 is provided on one side of the limiting plate 30 , and the inner surface of the limiting groove 33 is slidably fitted with the outer surface of the limiting clamping plate 34 , so that the limiting clamping plate 34 can slide on the inner surface of the limiting groove 33 through the limiting groove 33 .

[0041] Reference Figure 3 Two positioning grooves 31 are provided at the upper end of the limiting plate 30 , and the inner surfaces of the two positioning grooves 31 are respectively slidably fitted with the outer surfaces of the two bolts 32 , so that the bolts 32 can slide on the inner surfaces of the positioning grooves 31 through the positioning grooves 31 .

[0042] Reference Figure 3 Two positioning slots 37 are provided at the upper end of the limiting card plate 34 , and the inner surfaces of the two positioning slots 37 are respectively slidably fitted with the outer surfaces of the two bolts 32 , so that the bolts 32 can slide on the inner surfaces of the positioning slots 37 through the positioning slots 37 .

[0043] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A step drill, comprising a blade (1), characterized in that: A disassembly mechanism (3) is provided at one end of the blade body (1), and a connection mechanism (2) is fixedly provided at one side of the disassembly mechanism (3); The connecting mechanism (2) comprises a fixed plate (20), one side of the fixed plate (20) is rotatably provided with two bidirectional threaded rods (21), the outer surfaces of the two bidirectional threaded rods (21) are each provided with two sliding plates (23), one side of the fixed plate (20) is provided with a connecting plate (27), one side of the connecting plate (27) is fixedly provided with two sliding clamping plates (25), and one side of the connecting plate (27) is fixedly provided with a clamping plate (26).

2. The step drill according to claim 1, characterized in that: The disassembly mechanism (3) comprises a limit plate (30), a limit clamping plate (34) is provided inside the limit plate (30), and one side of the limit clamping plate (34) is fixedly connected to one end of the blade body (1), two bolts (32) are provided at the upper end of the limit plate (30), nuts (38) are threadedly sleeved on the outer surfaces of the two bolts (32), a stepped groove (35) is provided on the outer surface of the blade body (1), and two liquid injection ports (36) are provided at one end of the blade body (1).

3. The step drill according to claim 1, characterized in that: One side of the four sliding plates (23) is provided with a thread groove (22), and the outer surfaces of every two thread grooves (22) are respectively threadably fitted with the outer surfaces of the two bidirectional threaded rods (21).

4. The step drill according to claim 1, characterized in that: A snap-fit ​​groove (28) is provided on one side of the fixing plate (20), and the inner surface of the snap-fit ​​groove (28) is slidably fitted with the outer surface of the snap-fit ​​plate (26).

5. The step drill according to claim 1, characterized in that: Two sliding grooves (24) are provided on one side of the fixed plate (20), and the inner surface of each sliding groove (24) is slidably fitted with the outer surfaces of the two sliding plates (23).

6. The step drill according to claim 2, characterized in that: A limiting groove (33) is provided on one side of the limiting plate (30), and the inner surface of the limiting groove (33) is slidably fitted with the outer surface of the limiting clamping plate (34).

7. The step drill according to claim 2, characterized in that: Two positioning grooves (31) are provided at the upper end of the limiting plate (30), and the inner surfaces of the two positioning grooves (31) are respectively slidably fitted with the outer surfaces of the two bolts (32).

8. The step drill according to claim 2, characterized in that: Two positioning slots (37) are provided at the upper end of the position limiting clamping plate (34), and the inner surfaces of the two positioning slots (37) are respectively slidably fitted with the outer surfaces of the two bolts (32).

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