A reamer cooling structure

Abstract

This utility model belongs to the field of machining tool technology, specifically providing a reamer cooling structure, including a tool shank and a modularly welded adjustable reamer head. The modularly welded adjustable reamer head is mounted on the tool shank, and a water-blocking ring is fitted on the tool shank. The end of the water-blocking ring extends to the side of the modularly welded adjustable reamer head, with a gap between them. A coolant buffer chamber is formed between the water-blocking ring, the modularly welded adjustable reamer head, and the tool shank. A main cooling channel is provided at the center of the tool shank, and several coolant dispersion holes are evenly distributed on the side of the modularly welded adjustable reamer head. A coolant grafting channel is also provided inside the tool shank, connecting the main cooling channel and the coolant dispersion holes. The coolant dispersion holes are connected to the coolant buffer chamber. During machining, the coolant sprays out from the coolant dispersion holes through the coolant grafting channel, fills the water-blocking ring, and overflows from the gap. The coolant can form an annular cooling water curtain, thereby better lubricating the cutting tool.

Description

Technical Field

[0001] This utility model relates to the field of machining tool technology, and in particular to a cooling structure for a reamer. Background Technology

[0002] In machining, reamers are often used as precision cutting tools. During high-speed rotation, the metal is compressed, generating a large amount of heat. Some of this heat is removed with the workpiece allowance, some remains on the workpiece surface, and some is transferred to the reamer. This can cause workpiece deformation, tool breakage, and other issues, affecting the dimensional accuracy and form and position tolerances of the reaming process, and increasing the defect rate. Therefore, reamers require more efficient cooling of the cutting edge and the machined area during machining to reduce the cutting temperature, extend tool life, and ensure the quality of the machined hole.

[0003] Currently, in machining, some cutting tools on the market typically use cooling dispersion holes on the cutting edge to cool the cutting edge. Coolant flows out from these holes to cool the cutting edge. However, with this structure, the coolant only cools a relatively fixed point on the cutting edge when it flows out from the cooling dispersion holes. The cooling area is limited, the cooling uniformity is poor, and the cooling effect is poor. This leads to unstable tool life, affecting production progress; rapid tool wear will increase the company's production costs.

[0004] Therefore, it is necessary to design a structure for optimized cooling during reaming to meet customer needs while significantly reducing customer operating costs and shortening manufacturing costs and cycles. Utility Model Content

[0005] In view of the above-mentioned problems in the existing technology, this utility model provides a reamer cooling structure, which aims to solve the above-mentioned technical problems.

[0006] Technical solution: To achieve the above objectives, this utility model provides a reamer cooling structure, including a shank and a modularly welded adjustable reamer head. The modularly welded adjustable reamer head is mounted on the shank, and a water-blocking ring is sleeved on the shank. The end of the water-blocking ring extends to the side of the modularly welded adjustable reamer head, and there is a gap between the two. Coolant overflows from the gap to form an annular cooling water curtain. A coolant buffer chamber is formed between the water-blocking ring, the modularly welded adjustable reamer head, and the shank.

[0007] The tool holder has a main cooling channel at its center. The adjustable reamer head is welded to the module and has several coolant dispersion holes evenly distributed on its side. The tool holder also has a coolant grafting channel that connects the main cooling channel and the coolant dispersion holes. The coolant dispersion holes are connected to the coolant buffer chamber.

[0008] During the machining process, the coolant is sprayed out from the coolant dispersion hole through the coolant grafting channel, fills the water baffle ring, and overflows from the gap between the water baffle ring and the modularly welded adjustable reamer head. The coolant can form an annular cooling water curtain, thereby better lubricating the cutting tool.

[0009] Furthermore, the tool holder is also provided with a shaft elastic retaining ring and an O-ring seal. After the water-blocking ring is fitted into the tool holder, it is limited by the shaft elastic retaining ring.

[0010] Furthermore, the modularly welded adjustable reamer head is connected and installed in the tool holder by a double-ended screw; the side of the modularly welded adjustable reamer head is pressed with a water-blocking ring, which cooperates with the shaft elastic retaining ring to prevent rotation.

[0011] Furthermore, the tool holder is provided with a retaining ring groove and a sealing ring groove for installing a shaft elastic retaining ring and an O-ring seal.

[0012] Furthermore, after the water-blocking ring is fitted onto the feed bar, one end is pressed against the shaft elastic retaining ring, and the inner hole cooperates with the O-ring to form a seal, preventing coolant from flowing towards the spindle.

[0013] Furthermore, the tool holder is provided with a tapered mounting hole, and the mounting head of the modularly welded adjustable reamer head is tapered and matches the tapered mounting hole.

[0014] Furthermore, the adjustable reamer head for modular welding has several blades on its side near the end, and the gap between the water-blocking ring and the adjustable reamer head corresponds to the position of the blades. Coolant overflowing from the gap can directly act on the blades.

[0015] Compared with the prior art, the reamer cooling structure provided by this utility model has the following beneficial effects:

[0016] 1. The present invention proposes a cooling structure for a reamer, which includes a water-blocking ring and a coolant grafting channel on the shank, and a coolant dispersion hole connected to the coolant grafting channel on the modularly welded adjustable reamer head. After passing through the coolant grafting channel and the coolant dispersion hole, the coolant forms an annular cooling water curtain above the cutting tool under the action of the water-blocking ring, thereby improving the cooling effect on the cutting tool and extending the tool's service life.

[0017] 2. The tool holder and tool head in this utility model are positioned by a conical surface, which has high precision. The diameter of the tool head can be slightly compensated, which extends its service life. It can be quickly replaced, and customers can replace it to ensure production and processing when it fails, which reduces the manufacturing cycle and cost. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a reamer cooling structure according to the present invention;

[0019] Figure 2 This is an exploded view of a reamer cooling structure according to the present invention;

[0020] Figure 3 This is a schematic diagram of the tool holder described in this invention.

[0021] In the diagram: 100-tool holder, 101-retaining ring groove, 102-sealing ring groove, 103-coolant grafting channel, 104-main cooling channel;

[0022] 200-shaft elastic retaining ring;

[0023] 300-O-ring seal;

[0024] 400-water-retaining ring;

[0025] 500 - Modular welding adjustable reamer head, 501 - Coolant dispersion hole, 502 - Blade;

[0026] 600 - Coolant buffer chamber. Detailed Implementation

[0027] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings, so that the advantages and features of this utility model can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of this utility model. The embodiments of this utility model include the following parts:

[0028] like Figure 1-3 As shown, a reamer cooling structure includes a shank 100 and a modularly welded adjustable reamer head 500. The modularly welded adjustable reamer head 500 is mounted on the shank 100. A water-blocking ring 400 is sleeved on the shank 100. The end of the water-blocking ring 400 extends to the side of the modularly welded adjustable reamer head 500, and there is a gap between the two. Coolant overflows from the gap to form an annular cooling water curtain. A coolant buffer chamber 600 is formed between the water-blocking ring 400, the modularly welded adjustable reamer head 500, and the shank 100.

[0029] The tool holder 100 has a main cooling channel 104 at its center. The adjustable reamer head 500 is provided with a plurality of coolant dispersion holes 501 evenly distributed on its side. The tool holder 100 is also provided with a coolant grafting channel 103, which connects the main cooling channel 104 and the coolant dispersion holes 501. The coolant dispersion holes 501 are connected to the coolant buffer chamber 600.

[0030] In this embodiment, the tool holder 100 is also provided with a shaft elastic retaining ring 200 and an O-ring seal 300. After the water-blocking ring 400 is fitted into the tool holder 100, it is limited by the shaft elastic retaining ring 200.

[0031] In this embodiment, the modularly welded adjustable reamer head 500 is connected and installed in the tool holder 100 by a double-ended screw; the side of the modularly welded adjustable reamer head 500 is pressed against the water-blocking ring 400, which cooperates with the shaft elastic retaining ring 200 to prevent rotation.

[0032] In this embodiment, the tool holder 100 is provided with a retaining ring groove 101 and a sealing ring groove 102 for mounting a shaft elastic retaining ring 200 and an O-ring seal 300.

[0033] In this embodiment, after the water-blocking ring 400 is fitted onto the feed rod 100, one end is pressed against the shaft elastic retaining ring 200, and the inner hole cooperates with the O-ring seal 300 to form a seal.

[0034] In this embodiment, the tool holder 100 is provided with a tapered mounting hole, and the mounting head of the modularly welded adjustable reamer head 500 is tapered and matches the tapered mounting hole.

[0035] In this embodiment, the adjustable reamer head 500 for modular welding has several blades 502 on its side near the end, and the gap between the water-blocking ring 400 and the adjustable reamer head 500 corresponds to the position of the blades 502.

[0036] The cooling structure for a reamer provided by this utility model allows coolant to flow from the main cooling channel 104 into the cooling grafting channel 103 during operation. Then, it sprays out from the coolant dispersion hole 501, filling the coolant buffer chamber 600. After filling the chamber, the coolant overflows from the gap between the water baffle ring 400 and the modularly welded adjustable reamer head 500, forming an annular cooling water curtain. The coolant flows evenly to the cutting tool from all directions, thereby better lubricating the cutting tool, improving the overall tool life, and reducing the production cost of the enterprise.

[0037] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements can be made without departing from the principle of the present utility model, and these improvements should also be considered within the protection scope of the present utility model.

Claims

1. A reamer cooling structure, comprising a reamer rod (100) and a modular welded adjustable reamer head (500) mounted on the reamer rod (100), characterized in that, A water baffle ring (400) is fitted on the cutter bar (100). The end of the water baffle ring (400) extends to the side of the modular welding adjustable reamer head (500) and there is a gap between them. Coolant overflows from the gap to form an annular cooling water curtain. A coolant buffer chamber (600) is formed between the water baffle ring (400), the modular welding adjustable reamer head (500), and the cutter bar (100). The tool holder (100) has a main cooling channel (104) at its center. The side of the modular welded adjustable reamer head (500) is evenly provided with a number of coolant dispersion holes (501). The tool holder (100) is also provided with a coolant grafting channel (103). The coolant grafting channel (103) connects the main cooling channel (104) and the coolant dispersion holes (501). The coolant dispersion holes (501) are connected to the coolant buffer chamber (600).

2. The cooling structure of a reamer according to claim 1, wherein The tool holder (100) is also provided with a shaft elastic retaining ring (200) and an O-ring seal (300). The water-blocking ring (400) is fitted into the tool holder (100) and then limited by the shaft elastic retaining ring (200).

3. The cooling structure for a reamer according to claim 2, wherein The modular welded adjustable reamer head (500) is installed in the shank (100) by a double-ended screw; the side of the modular welded adjustable reamer head (500) is pressed against the water-blocking ring (400), which cooperates with the shaft elastic retaining ring (200) to prevent rotation.

4. The cooling structure of a reamer according to claim 2, wherein The tool holder (100) is provided with a retaining ring groove (101) and a sealing ring groove (102) for installing a shaft elastic retaining ring (200) and an O-ring seal (300).

5. The cooling structure for a reamer according to claim 2, wherein After the water-blocking ring (400) is fitted onto the feed rod (100), one end is pressed against the shaft elastic retaining ring (200), and the inner hole cooperates with the O-ring seal (300) to form a seal.

6. The cooling structure for a reamer according to claim 1, wherein The tool holder (100) is provided with a tapered mounting hole, and the mounting head of the modular welded adjustable reamer head (500) is tapered and matches the tapered mounting hole.

7. The cooling structure for a reamer according to claim 1, wherein The adjustable reamer head (500) for modular welding has several blades (502) on its side near the end. The gap between the water baffle ring (400) and the adjustable reamer head (500) for modular welding corresponds to the position of the blades (502).

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