Shallow hole drilling precision cooling structure module
By setting cooling channels, cooling holes on the cutting body and cutting inserts of shallow holes, cooling holes on the rear and front cutting grooves, the cooling effect reduction caused by the reduction of coolant inlet during the drilling process is solved, and accurate and stable cooling of the front and rear cutting surfaces of the blade is achieved.
Patent Information
- Application Number
- CN202420772484.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-15
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-04-15
AI Technical Summary
In the drilling operation, as the drilling depth increases, the inlet amount of coolant decreases, resulting in a decrease in cooling effect, especially it is difficult to achieve stable and sufficient cooling of the cutting edge position of the blade.
A shallow hole drilling precision cooling structure module is designed, including setting a cooling channel in the tool body, and setting a back tool surface cooling hole and a front tool surface cooling hole on the tool body. The coolant is divided into these channels to the rear tool surface of the cutting insert for cooling. A liquid storage tank and an injection hole are provided in the cutting insert, and the coolant is diverted to the injection hole through the liquid storage tank to achieve accurate cooling of the front and rear cutting surfaces of the blade.
Through this structure, precise cooling of the front and rear cutting surfaces of the cutting insert is achieved, ensuring the stability and efficiency of the cooling effect.
Smart Images
Figure CN222710897U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cooling of shallow hole drills, in particular to a precise cooling structure module for shallow hole drills. Background Art
[0002] At present, when drilling operations are performed, the drill bit is generally cooled by setting a coolant water pipe and spraying coolant to the drilling position through the coolant water pipe to cool the drill bit. However, when the hole is drilled to a certain depth, the amount of coolant entering will decrease, resulting in reduced cooling effect, and it is difficult to ensure a stable and sufficient cooling effect at the cutting edge position of the blade. In view of the above defects, the present application is proposed. Utility Model Content
[0003] The utility model aims to provide a shallow hole drilling precision cooling structure module, which can achieve a precise and stable cooling effect on a cutting blade.
[0004] In order to solve the above problems, the utility model provides a shallow hole drilling precision cooling structure module, including a tool body and a cutting blade, the tool body is provided with a cooling channel, the tool body is provided with a flank cooling hole and a rake cooling hole for cooling the flank and rake faces of the cutting blade, the flank cooling hole and the rake cooling hole are both connected to the cooling channel, the rake cooling hole is arranged at the tool mounting portion of the tool body, the cutting blade is penetrated by a spray hole, the spray hole can be connected to the rake cooling hole, and the coolant reaches the rake face of the cutting tool through the rake cooling hole and the spray hole for cooling.
[0005] According to an embodiment of the utility model, a liquid storage groove is provided on the cutting blade, the injection hole is connected to the liquid storage groove, and the liquid storage groove is used to be connected to the front cutting edge cooling hole.
[0006] According to an embodiment of the utility model, the injection hole is arranged at each cutting edge position of the cutting blade.
[0007] According to an embodiment of the present invention, the number of injection holes arranged at each cutting edge of the cutting blade is ≥2.
[0008] According to an embodiment of the utility model, the number of the liquid storage grooves is the same as the number of the cutting edges of the cutting blade, and each liquid storage groove is connected to a spray hole provided at the cutting edge.
[0009] According to an embodiment of the utility model, the cross-sectional shape of the liquid storage tank is a waist-shaped hole.
[0010] According to an embodiment of the utility model, the depth of the liquid storage groove is less than half of the thickness of the cutting blade.
[0011] According to an embodiment of the utility model, the diameter of the liquid outlet end of the injection hole is reduced and is inclined toward the edge of the cutting blade.
[0012] According to an embodiment of the present invention, the cooling channel is a single channel or a double channel arrangement.
[0013] The beneficial effect of the utility model is that by setting the cooling holes on the back cutting edge and the cooling holes on the front cutting edge, the coolant can be diverted to the back cutting edge and the liquid storage tank; and then diverted to the injection hole through the liquid storage tank, thereby achieving precise cooling of the front and rear cutting edges of the blade, and the cooling effect is stable. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0015] Figure 1 It is a schematic diagram of the knife body structure;
[0016] Figure 2 It is a structural schematic diagram of the end face of the cutter body;
[0017] Figure 3 for Figure 1 A schematic diagram of the structure enlargement in the middle;
[0018] Figure 4 is a schematic diagram of the rake face structure of the cutting blade;
[0019] Figure 5 is a schematic diagram of the back face structure of the cutting blade;
[0020] Figure 6 It is a cross-sectional schematic diagram of the injection hole. DETAILED DESCRIPTION
[0021] The following description is only used to disclose the utility model so that those skilled in the art can implement the utility model. The embodiments described below are only for example, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other solutions that do not deviate from the spirit and scope of the utility model.
[0022] The shallow hole drilling precision cooling structure module comprises a tool body 1 and a cutting blade 2, such as Figure 1-Figure 3A cooling channel 31 is provided in the tool body 1, and a rear tool face cooling hole 32 and a front tool face cooling hole 33 are provided on the tool body 1 for cooling the rear and front tool faces of the cutting blade 2. The rear tool face cooling hole 32 and the front tool face cooling hole 33 are both connected to the cooling channel 31, and the front tool face cooling hole 33 is arranged at the tool mounting portion 11 of the tool body 1. The cooling channel 31 can be a single-channel or double-channel setting. In the present embodiment, a single-channel setting is used. The end forks of the cooling channel 31 are respectively connected to the rear tool face cooling hole 32 and the front tool face cooling hole 33. For example, in the case of a spiral hole structure, the rear tool face cooling hole 32 and the cooling channel 31 can be combined into one channel structure.
[0023] like Figure 4-Figure 6 A fixing hole is provided at the center of the cutting blade 2, and a spray hole 25 is provided through the cutting blade 2. The spray hole 25 can be connected to the front cutting edge cooling hole 33. The coolant reaches the front cutting edge of the cutting tool through the front cutting edge cooling hole 33 and the spray hole 25 for cooling. Preferably, a liquid storage groove 24 is provided on the cutting blade 2, and the spray hole 25 is connected to the liquid storage groove 24, and the liquid storage groove 24 is used to be connected to the front cutting edge cooling hole 33.
[0024] The injection hole 25 is arranged at each edge position of the cutting blade 2. The number of the injection holes 25 arranged at each edge position of the cutting blade 2 is 1 or ≥ 2. The number of the arranged holes 25 can be adjusted according to the size of the blade.
[0025] The number of the liquid storage grooves 24 is the same as the number of the cutting edges of the cutting blade 2, and each liquid storage groove 24 is connected to a spray hole 25 provided at the cutting edge.
[0026] Specifically, a blade has one cutting edge involved in cutting, but one blade is provided with N cutting edges: for example, a square blade has four cutting edges, a triangular blade has three cutting edges; the other cutting edges are spare cutting edges; if multiple cutting edges share one liquid storage groove, there will be pressure and flow loss, so a liquid storage groove is designed separately for each cutting edge. In this embodiment, taking the square blade as an example, four liquid storage grooves 24 are provided on the back face 23 of the cutting blade 2, which are respectively connected to the two injection holes 25 provided at each cutting edge.
[0027] Optionally, the cross-sectional shape of the liquid storage groove 24 is a waist-shaped hole, and the depth of the liquid storage groove 24 is less than half of the thickness of the cutting blade 2 to avoid a significant impact on the blade strength.
[0028] Alternatively, if Figure 6 The diameter of the liquid outlet end of the injection hole 25 is reduced and is tilted toward the cutting edge of the cutting blade 2, which can increase the flow rate of the coolant and enable it to fully contact the cutting edge, thereby ensuring the cooling effect.
[0029] Its working principle is that the cooling channel 31 introduces the coolant from the machine tool spindle into the tool body 1, and is diverted to the back tool face cooling hole 32 and the front tool face cooling hole 33; the back tool face cooling hole 32 flows the cutting fluid to the back tool face 23, and accurately cools the back tool face of the cutting edge; the cutting fluid enters the liquid storage tank 24 through the front tool face cooling hole 33; and then is diverted to the injection hole 25 through the liquid storage tank 24, and finally the front tool face 22 of the cutting edge is accurately cooled through the injection hole 25.
[0030] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments. Without departing from the principles, the embodiments of the present invention may be deformed and modified in any way.
Claims
1. Shallow hole drilling precision cooling structure module, characterized by: The invention comprises a tool body (1) and a cutting blade (2), wherein a cooling channel (31) is arranged in the tool body (1), and a flank cooling hole (32) and a rake cooling hole (33) are arranged on the tool body (1) for cooling the flank and rake surfaces of the cutting blade (2), wherein the flank cooling hole (32) and the rake cooling hole (33) are both connected to the cooling channel (31), and the rake cooling hole (33) is arranged at a tool mounting portion (11) of the tool body (1), and a spray hole (25) is arranged through the cutting blade (2), wherein the spray hole (25) can be connected to the rake cooling hole (33), and the coolant reaches the rake surface of the cutting tool through the rake cooling hole (33) and the spray hole (25) for cooling.
2. The shallow hole drilling precision cooling structure module according to claim 1 is characterized in that: The cutting blade (2) is provided with a liquid storage groove (24), the injection hole (25) is connected to the liquid storage groove (24), and the liquid storage groove (24) is used to be connected to the front cutting edge cooling hole (33).
3. The shallow hole drilling precision cooling structure module according to claim 2 is characterized in that: The injection hole (25) is arranged at each cutting edge position of the cutting blade (2).
4. The shallow hole drilling precision cooling structure module according to claim 3 is characterized in that: The number of the injection holes (25) arranged at each cutting edge position of the cutting blade (2) is ≥2.
5. The shallow hole drilling precision cooling structure module according to claim 3 or 4, characterized in that: The number of the liquid storage grooves (24) is the same as the number of the cutting edges of the cutting blade (2), and each liquid storage groove (24) is connected to a spray hole (25) provided at the cutting edge.
6. The shallow hole drilling precision cooling structure module according to any one of claims 2 to 4, characterized in that: The cross-sectional shape of the liquid storage tank (24) is a waist-shaped hole.
7. The shallow hole drilling precision cooling structure module according to claim 6, characterized in that: The depth of the liquid storage groove (24) is less than half the thickness of the cutting blade (2).
8. The shallow hole drilling precision cooling structure module according to claim 5, characterized in that: The diameter of the liquid outlet end of the injection hole (25) is reduced and is arranged obliquely toward the edge direction of the cutting blade (2).
9. The shallow hole drilling precision cooling structure module according to claim 1, characterized in that: The cooling channel (31) is arranged as a single channel or a double channel.