Threaded handle reamer with step structure

Abstract

The utility model belongs to the technical field of reamers, particularly relates to a threaded handle reamer with a stepped structure, and aims to solve the problems that the diameter of a machined hole is single due to the same diameter of an existing cutting edge, if inner holes with different hole diameters need to be machined, multiple cutters are needed to complete drilling machining, cutter replacement takes time, and the machining cost is high. According to the technical scheme, the stepped reamer comprises a stepped reamer head. The cutting part of the reamer head is composed of a plurality of sections, the cutting calibers of all the sections are slightly different and are gradually reduced to meet different diameter requirements required by machining, and when the stepped reamer head is abraded, the pull ring is rotated, so that the fixing bolt is in threaded connection with the connecting block and the fixing block at the top end of the fixing rod; therefore, the stepped reamer head and the fixing rod are assembled, the stepped reamer head can be conveniently replaced at any time, and the problems that the diameter of a machined hole is single due to the fact that the diameters of cutting edges are the same, tool replacement takes time, and tool setting is prone to being inaccurate are solved.

Description

Technical Field

[0001] The utility model relates to a threaded handle reamer, in particular to a threaded handle reamer with a stepped structure, belonging to the technical field of reamer. Background Art

[0002] A reamer is a rotary tool with one or more teeth used to remove a thin layer of metal from the machined surface. It is mainly used for hole expansion or hole repair and is a finishing tool.

[0003] In the prior art, a reamer disclosed in announcement number CN220659428U includes a cutting edge section, a clearance section and a clamping handle section, wherein the cutting edge section is connected to the clearance section, the clearance section is connected to the clamping handle section, and an even number of cutting edges are provided on the cutting edge section. Several of the cutting edges are in a spiral structure. Through the structural setting of the cutting edge part, the hole processing accuracy and quality can be effectively improved, the hole processing efficiency can be improved, and the production cost can be reduced.

[0004] In the above technical solution, the structural setting of the cutting edge part can effectively improve the hole processing accuracy and quality, and improve the hole processing efficiency. However, the same diameter of the cutting edge leads to a single processed hole diameter. If internal holes with different hole diameters are to be processed, multiple tools are required to complete the drilling process. Moreover, the reamer is an integrated structure, and tool changing not only takes time, but also easily leads to inaccurate tool alignment. In view of this, a threaded shank reamer with a stepped structure is provided to overcome the above defects. Utility Model Content

[0005] The utility model provides a threaded shank reamer with a stepped structure to solve the problem that the same cutting edge diameter leads to a single hole diameter, and if internal holes with different hole diameters are to be processed, multiple tools are needed to complete the drilling process, and tool changing not only takes time but also easily leads to inaccurate tool alignment.

[0006] The utility model achieves the above-mentioned purpose through the following technical scheme: a threaded shank reamer with a stepped structure, comprising a stepped reamer head, a water outlet is provided inside the stepped reamer head, and a chip removal groove is provided on the outer surface of the stepped reamer head;

[0007] The bottom end surface of the step reamer head is fixedly connected with a fixed block, a plug-in block is slidably arranged inside the fixed block, and a fixed rod is fixedly connected with the bottom end of the plug-in block;

[0008] Pull rings are threadedly connected on both sides of the fixed block, a return spring is arranged on the outer surface of the pull ring, a fastening bolt is fixedly connected to one side of the return spring, the fastening bolt passes through the inner wall of the plug-in block, and the fixed block forms a detachable structure with the plug-in block through the fastening bolt.

[0009] As a further solution of the utility model: the structure of the step reamer head is a step-shaped structure, a slot is provided inside the plug-in block, a compression spring is fixedly connected inside the slot, and a pressure block is fixedly connected to one side of the compression spring.

[0010] As a further solution of the utility model: the outer surface of the fixed block is fixedly connected to two connecting blocks, the interior of the connecting block is slidably connected to two pressing plates, and the interiors of the two pressing plates are fixedly connected to the supporting plates.

[0011] As a further solution of the utility model: the bottom end of the fixed rod is fixedly connected with a liquid inlet, a cooling water tank is opened inside the fixed rod, and the top end of the cooling water tank is connected with a water pipe tank.

[0012] As a further solution of the utility model: an adjusting rod is slidably connected to the outer side of the fixing rod, and fixing bolts are threadedly connected to both sides of the adjusting rod.

[0013] As a further solution of the utility model: a plurality of positioning holes are opened on the outer surface of the fixing rod, three adjusting holes are opened on the surface of the adjusting rod, and the fixing rod is detachably connected to the adjusting rod through a fixing bolt.

[0014] As a further solution of the utility model: a heat sink is fixedly connected to the inner wall of the fixed block, and the step reamer head and the fixed block are both made of hard alloy.

[0015] The beneficial effects of the utility model are:

[0016] 1. The cutting part of the step reamer head is composed of multiple sections. The cutting diameter of each section is slightly different and gradually becomes smaller to meet the different diameter requirements required for processing. When the step reamer head is worn, the pull ring is turned to make the fixing bolt and the connecting block at the top of the fixing rod be threadedly connected, thereby realizing the assembly between the step reamer head and the fixing rod, which is convenient for replacing the step reamer head at any time to avoid the same cutting edge diameter resulting in a single processed hole diameter. Tool changing not only takes time, but also easily leads to inaccurate tool setting problems.

[0017] 2. Before installing the reamer, transport cooling water from the liquid inlet to the cooling water tank, and then connect the cooling water pipe to the cooling water tank through the water pipe groove. The cooling water pipe runs through the inside of the step reamer head to improve the cooling effect of the reamer. The cooling water is sprayed out from the water outlet, and part of the cooling water is discharged from the chip groove on the surface of the step reamer head to clean the step reamer head.

[0018] 3. By setting the sliding inside the fixed rod and the adjusting rod, and then using the threaded cooperation of the fixing bolt, the positioning hole and the adjusting hole, the limited fixation of the adjusting rod after sliding can be achieved, and then the overall length between the fixed rod and the adjusting rod can be adjusted to meet the usage requirements in different situations. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the disassembly structure of the device of the utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the fixing rod of the utility model;

[0022] Figure 4 This is a schematic diagram of the internal structure of the fixed block of the utility model;

[0023] Figure 5 This is a schematic diagram of the internal structure of the plug-in block of the utility model.

[0024] In the figure: 1. Step reamer head; 2. Chip groove; 3. Water outlet; 4. Fixing block; 5. Pull ring; 6. Pressing plate; 7. Fixing rod; 8. Adjusting rod; 9. Fixing bolt; 10. Adjusting hole; 11. Plug-in block; 12. Pressing block; 13. Positioning hole; 14. Liquid inlet; 15. Cooling water trough; 16. Water pipe groove; 17. Heat sink; 18. Fastening bolt; 19. Reset spring; 20. Support plate; 21. Compression spring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Embodiment 1

[0026] like Figures 1 to 5 As shown, a threaded shank reamer with a stepped structure comprises a stepped reamer head 1, a water outlet 3 is provided inside the stepped reamer head 1, and a chip removal groove 2 is provided on the outer surface of the stepped reamer head 1;

[0027] The bottom end surface of the step reamer head 1 is fixedly connected with a fixing block 4, a plug-in block 11 is slidably arranged inside the fixing block 4, and a fixing rod 7 is fixedly connected with the bottom end of the plug-in block 11;

[0028] Pull rings 5 ​​are threadedly connected to both sides of the fixed block 4, and a return spring 19 is provided on the outer surface of the pull ring 5. A fastening bolt 18 is fixedly connected to one side of the return spring 19. The fastening bolt 18 passes through the inner wall of the plug-in block 11. The fixed block 4 forms a detachable structure with the plug-in block 11 through the fastening bolt 18. Embodiment 2

[0029] In addition to all the technical features of the first embodiment, this embodiment also includes:

[0030] The structure of the step reamer head 1 is a stepped structure, a card slot is provided inside the plug-in block 11, a compression spring 21 is fixedly connected inside the card slot, a pressure block 12 is fixedly connected to one side of the compression spring 21, and the cutting part of the step reamer head 1 is composed of multiple sections, each section has a slightly different cutting caliber, which gradually becomes smaller to meet the different diameter requirements required for processing. By pressing the pressure block 12, the pressure block 12 shrinks into the card slot under the action of the compression spring 21, which facilitates the connection between the pressure block 12 and the fixed block 4, thereby enhancing the tightness of the connection.

[0031] The outer surface of the fixed block 4 is fixedly connected to two connecting blocks, and the interior of the connecting block is slidably connected to two pressing plates 6, and the interiors of the two pressing plates 6 are fixedly connected to a support plate 20. When the pressing block 12 is engaged with the fixed block 4, the pressing plate 6 is pressed, and the pressing plate 6 applies pressure to the pressing block 12, pressing the pressing block 12 into the card slot for easy disassembly and assembly.

[0032] The bottom end of the fixed rod 7 is fixedly connected with a liquid inlet 14, and a cooling water trough 15 is opened inside the fixed rod 7. The top of the cooling water trough 15 is connected with a water pipe groove 16. Before installing the reamer, cooling water is transported from the liquid inlet 14 to the cooling water trough 15, and then the cooling water pipe is connected to the cooling water trough 15 through the water pipe groove 16. The cooling water pipe runs through the inside of the step reamer head 1 to improve the cooling effect of the reamer. The cooling water is sprayed out from the water outlet 3, and part of the cooling water is discharged from the chip removal groove 2 opened on the surface of the step reamer head 1 to clean the step reamer head 1. Embodiment 3

[0033] In addition to all the technical features of the first embodiment, this embodiment also includes:

[0034] The outer side of the fixed rod 7 is slidably connected with an adjusting rod 8, and both sides of the adjusting rod 8 are threadedly connected with fixing bolts 9. The fixing bolts 9 are passed through the inner wall of the adjusting rod 8 and threadedly connected to the fixed rod 7, thereby achieving assembly between the fixed rod 7 and the adjusting rod 8.

[0035] A plurality of positioning holes 13 are provided on the outer surface of the fixing rod 7, and three adjusting holes 10 are provided on the surface of the adjusting rod 8. The fixing rod 7 is detachably connected to the adjusting rod 8 through the fixing bolt 9. By setting the sliding inside the fixing rod 7 and the adjusting rod 8, and utilizing the threaded cooperation of the fixing bolt 9, the positioning holes 13 and the adjusting hole 10, the limited fixation of the adjusting rod 8 after sliding is achieved, thereby achieving the adjustment of the overall length between the fixing rod 7 and the adjusting rod 8 to meet the usage requirements in different situations.

[0036] A heat sink 17 is fixedly connected to the inner wall of the fixed block 4. The step reamer head 1 and the fixed block 4 are both made of cemented carbide. By coating the contact surface of the heat sink 17 and the fixed block 4 with a layer of thermal conductive silicone grease, the heat generated by the reamer is more effectively conducted to the heat sink 17, and then dissipated to the surrounding air through the heat sink 17, thereby improving the heat dissipation efficiency.

[0037] Working principle: before installing the reamer, first, transport cooling water into the cooling water tank 15 through the liquid inlet 14, and then connect the cooling water pipe to the cooling water tank 15 through the water pipe groove 16. The cooling water pipe runs through the interior of the step reamer head 1, and press the pressure block 12 on the surface of the plug-in block 11. The pressure block 12 shrinks into the slot under the action of the compression spring 21. When disassembly is required, press the pressure plate 6 on the surface of the fixed block 4. The two pressure plates 6 apply pressure to the pressure block 12 under the action of the support plate 20, and press the pressure block 12 into the slot, thereby realizing the disassembly of the pressure block 12 and the fixed block 4. Then rotate the fixing rod 7 to thread the fixing rod 7 with the fixed block 4 at the bottom end of the step reamer head 1, and then rotate the pull ring 5. The pull ring 5 Under the action of the reset spring 19, the fastening bolt 18 is driven to be threadedly connected with the plug-in block 11, thereby completing the assembly between the step reamer head 1 and the fixed rod 7, adjusting the distance between the fixed rod 7 and the adjusting rod 8, and then using the threaded cooperation of the fixing bolt 9, the positioning hole 13 and the adjusting hole 10 to achieve the limited fixation of the adjusting rod 8 after sliding, thereby achieving the adjustment of the overall length between the fixed rod 7 and the adjusting rod 8 to meet the use requirements in different situations. Finally, when the reamer is working, cooling water is sprayed out from the water outlet 3, and part of the cooling water is discharged from the chip removal groove 2 opened on the surface of the step reamer head 1 to clean the step reamer head 1, and the heat dissipation efficiency of the reamer is improved by providing the heat sink 17 and the cooling water tank 15.

[0038] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0039] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A threaded shank reamer with a stepped structure, comprising a stepped reamer head (1), characterized in that: A water outlet (3) is provided inside the step reamer head (1), and a chip removal groove (2) is provided on the outer surface of the step reamer head (1); The bottom end surface of the step reamer head (1) is fixedly connected to a fixing block (4), a plug-in block (11) is slidably arranged inside the fixing block (4), and a fixing rod (7) is fixedly connected to the bottom end of the plug-in block (11); Pull rings (5) are threadedly connected to both sides of the fixed block (4); a return spring (19) is provided on the outer surface of the pull ring (5); a fastening bolt (18) is fixedly connected to one side of the return spring (19); the fastening bolt (18) passes through the inner wall of the plug-in block (11); and the fixed block (4) and the plug-in block (11) form a detachable structure through the fastening bolt (18).

2. A threaded shank reamer with a stepped structure according to claim 1, characterized in that: The structure of the step reamer head (1) is a step-shaped structure, a slot is provided inside the plug-in block (11), a compression spring (21) is fixedly connected inside the slot, and a pressure block (12) is fixedly connected to one side of the compression spring (21).

3. A threaded shank reamer with a stepped structure according to claim 1, characterized in that: The outer surface of the fixed block (4) is fixedly connected to two connection blocks, the interior of the connection block is slidably connected to two pressing plates (6), and the interiors of the two pressing plates (6) are fixedly connected to support plates (20).

4. A threaded shank reamer with a stepped structure according to claim 1, characterized in that: The bottom end of the fixed rod (7) is fixedly connected to a liquid inlet (14), a cooling water trough (15) is provided inside the fixed rod (7), and the top end of the cooling water trough (15) is connected to a water pipe trough (16).

5. The threaded shank reamer with a stepped structure according to claim 1, characterized in that: An adjusting rod (8) is slidably connected to the outer side of the fixing rod (7), and fixing bolts (9) are threadedly connected to both sides of the adjusting rod (8).

6. A threaded shank reamer with a stepped structure according to claim 5, characterized in that: The outer surface of the fixing rod (7) is provided with a plurality of positioning holes (13), the surface of the adjusting rod (8) is provided with three adjusting holes (10), and the fixing rod (7) is detachably connected to the adjusting rod (8) via a fixing bolt (9).

7. The threaded shank reamer with a stepped structure according to claim 1, characterized in that: A heat sink (17) is fixedly connected to the inner wall of the fixed block (4), and the step reamer head (1) and the fixed block (4) are both made of hard alloy.

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