Tool holder and cutting tool

Abstract

This utility model belongs to the field of cutting tool technology and discloses a tool holder and a cutting tool. The surface of the tool holder is provided with a first mounting groove, a first cooling inlet, and a cooling outlet. One end of the tool holder is provided with a second mounting groove for mounting a cutting blade. The tool holder has a first cooling channel and a second cooling channel. The first cooling channel connects the first cooling inlet and the cooling outlet, and the second cooling channel connects to the first cooling inlet and is arranged around the first mounting groove. The cutting tool includes a tool holder, a sensor element, and a cutting blade. The sensor element is mounted in the first mounting groove, and the cutting blade is mounted in the second mounting groove. The tool holder and cutting tool provided by this utility model have a small size and reduce the risk of signal drift of the sensor element due to excessive temperature, thereby improving monitoring accuracy.

Description

Technical Field

[0001] This utility model relates to the field of cutting tool technology, and in particular to a tool holder and a cutting tool. Background Technology

[0002] To achieve real-time monitoring of the turning process, sensors need to be installed on the tool holder. Currently, to improve the integration of the tool holder and the sensor, the sensor is usually embedded in the tool.

[0003] In existing technologies, to improve the cooling effect on the cutting tool, the cooling method is usually an internal cooling structure. Specifically, a cooling flow path is set inside the tool holder, and the outlet of the cooling flow path is located near the cutting tool, so that the coolant flows out of the cooling flow path and comes into contact with the cutting tool to achieve cooling. Since the cutting head structure containing the cutting tool has many components, the sensor is usually embedded in the tool holder. However, in order to reduce the cooling loss of the coolant in the cooling flow path, the cooling flow path is located at the cutting head, which results in the sensor being far from the cooling flow path. The coolant in the cooling flow path cannot carry away the heat on the sensor. Because the sensor is embedded in the tool holder, the heat generated by the cutting head can be transferred to the sensor through the tool holder, resulting in a high temperature rise of the sensor. This poses a risk of signal drift due to high temperature, affecting the monitoring accuracy.

[0004] Therefore, there is an urgent need for a tool holder and tool to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a tool holder and a tool to solve the technical problems of easy sensor signal drift and low monitoring accuracy in the prior art.

[0006] Based on the above concept, the technical solution adopted by this utility model is as follows:

[0007] The tool holder has a first mounting groove, a first cooling inlet, and a cooling outlet on its surface. One end of the tool holder has a second mounting groove for mounting a cutting blade. The tool holder has a first cooling channel and a second cooling channel. The first cooling channel connects the first cooling inlet and the cooling outlet. The second cooling channel connects the first cooling inlet and is arranged around the first mounting groove. The first mounting groove is used to mount a sensor.

[0008] In one embodiment, the first cooling inlet is located between the first mounting slot and the cooling outlet along the length of the tool holder.

[0009] In one embodiment, the second cooling channel is disposed across the first mounting slot along the length direction of the tool holder.

[0010] In one embodiment, the tool holder is further provided with a second cooling inlet, which is located on the end face of the tool holder facing away from the second mounting groove; the tool holder is provided with a first inlet channel, one end of the second cooling channel and the first cooling channel are both connected to the first inlet channel, and the first inlet channel is connected to the first cooling inlet; the second cooling inlet is connected to the end of the second cooling channel facing away from the first inlet channel.

[0011] In one embodiment, the tool holder further includes a sealing element;

[0012] The first cooling inlet is selectively sealed with the plugging element; and / or, the second cooling inlet is selectively sealed with the plugging element.

[0013] In one embodiment, the sensor is a strain sensor, which is installed in the first mounting groove by screws with a preload of not less than 1000N, so that the sensing surface of the sensor is in close contact with the bottom of the first mounting groove.

[0014] In one embodiment, the second cooling channel is provided with multiple channels;

[0015] The second cooling channel is provided on at least one side of the first mounting groove in the width direction; and / or, the second cooling channel is provided on at least one side of the first mounting groove in the depth direction.

[0016] In one embodiment, the tool holder is further provided with a cable channel, one end of which is connected to the first mounting groove, and the other end of which extends to the surface of the tool holder and forms a cable opening; the second cooling channel is arranged to avoid the cable channel.

[0017] In one embodiment, the tool holder includes a tool holder body, a pressure block connected to the tool holder body, and a pressure plate installed in the first mounting groove;

[0018] The pressure block and the tool holder body cooperate to form the second mounting groove. The first mounting groove, the second cooling channel, and the first cooling inlet are all located on the tool holder body. The first cooling channel includes a first sub-channel located on the tool holder body and a second sub-channel located on the pressure block. The first sub-channel is connected to the first cooling inlet, and the cooling outlet is located on the pressure block. The second sub-channel is connected to the cooling outlet. The area of ​​the cooling outlet is smaller than the flow area of ​​the second sub-channel, and the flow area of ​​the second sub-channel is equal to the flow area of ​​the first sub-channel.

[0019] The first mounting groove includes a first sub-groove near the second mounting groove and a second sub-groove communicating with the first sub-groove; in the width direction of the tool bar, the size of the first sub-groove is larger than the size of the second sub-groove; the pressure plate includes a first plate portion and a second plate portion connected to each other, the first plate portion being mounted in the first sub-groove and the second plate portion being mounted in the second sub-groove.

[0020] The cutting tool includes a tool holder as described above, and the cutting tool further includes a sensor element and a blade, the sensor element being mounted in the first mounting slot and the blade being mounted in the second mounting slot.

[0021] The tool holder and tool provided by this utility model have at least the following beneficial effects:

[0022] The tool holder has a first mounting groove for accommodating a sensor, allowing the sensor to be at least partially embedded in the tool holder. While ensuring detection accuracy, the size of the tool, including the tool holder and sensor, can be relatively small, facilitating tool miniaturization. Furthermore, the tool holder contains a first cooling channel and a second cooling channel. The first cooling channel provides a cooling medium to the cooling outlet to cool the blade mounted in the second mounting groove. The second cooling channel surrounds the first mounting groove, positioning it around the sensor. Heat from the sensor can be conducted through the tool holder to the cooling medium in the second cooling channel, achieving cooling of the sensor. Simultaneously, it reduces the amount of heat transferred from the blade to the sensor, lowering the risk of excessive sensor temperature rise and thus reducing the risk of signal drift due to overheating, thereby improving monitoring accuracy. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of the cutting tool provided in this embodiment of the utility model;

[0025] Figure 2 This is an exploded view of the cutting tool provided in an embodiment of this utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the tool holder provided in an embodiment of this utility model;

[0027] Figure 4 This is a schematic diagram of the internal channel of the tool holder provided in an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the structure of the pressure block provided in this embodiment of the utility model.

[0029] In the picture:

[0030] 100, Tool holder; 110, First mounting slot; 111, First sub-slot; 112, Second sub-slot; 120, First cooling inlet; 121, First inlet channel; 130, Cooling outlet; 140, Second mounting slot; 150, First cooling channel; 151, First sub-channel; 152, Second sub-channel; 160, Second cooling channel; 170, Second cooling inlet; 171, Second inlet channel; 180, Cable channel; 181, Cable port; 190, Tool holder body; 101, Pressure plate; 1011, First plate section; 1012, Second plate section; 1a, Pressure block; 200, Sensor component; 210, Head; 220, Cable connector; 300, Blade; 400, Tool pad; 500, First fastener; 600, Second fastener. Detailed Implementation

[0031] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.

[0032] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the present invention. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. In the description of this embodiment, unless otherwise specified, "multiple" specifically refers to two or more.

[0036] In the description of this embodiment, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., are based on the orientation or positional relationships shown in the accompanying drawings and are only for ease of description and simplification of operation. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are merely used for distinction in description and have no special meaning.

[0037] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or it can be located in between the component.

[0038] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0039] This embodiment provides a tool holder in which a sensor can be embedded, and the heat on the sensor can be dissipated, reducing the risk of excessive temperature rise of the sensor and thus reducing the risk of signal drift due to excessive temperature, thereby improving monitoring accuracy.

[0040] The tool holder provided in this embodiment is used in cutting tools, which can be turning tools or cutting tools.

[0041] For example, such as Figures 1 to 5 As shown, the surface of the tool holder 100 in this embodiment is provided with a first mounting groove 110, a first cooling inlet 120, and a cooling outlet 130. Optionally, the first mounting groove 110 is disposed on the side wall of the tool holder 100 and is used to mount the sensor 200. The first cooling inlet 120 can be disposed on the side wall of the tool holder 100 and is used to allow cooling medium to flow in. For example, the first cooling inlet 120 and the first mounting groove 110 can be located on two opposite side walls of the tool holder 100. The first cooling inlet 120 can be connected to a cooling device so that the cooling medium in the cooling device can enter the tool holder 100. One end of the tool holder 100 is provided with a second mounting groove 140 for mounting the blade 300, and the cooling outlet 130 is disposed close to the second mounting groove 140 so as to be closer to the blade 300. The cooling outlet 130 is located at one end near the tool holder 100. Specifically, the cooling outlet 130 is located at one end near the tool holder 100 where the blade 300 is located, so that the cooling medium flowing out of the cooling outlet 130 can contact the blade 300 and thus remove the heat from the blade 300.

[0042] For example, such as Figure 3 and Figure 4 As shown, the tool holder 100 is provided with a first cooling channel 150 and a second cooling channel 160. The first cooling channel 150 connects the first cooling inlet 120 and the cooling outlet 130, so that the cooling medium flowing in from the first cooling inlet 120 flows through the first cooling channel 150 and is sprayed out from the cooling outlet 130. The second cooling channel 160 connects to the first cooling inlet 120 and is arranged around the first mounting groove 110. The second cooling channel 160 is used to reduce the amount of heat generated by the blade 300 transferred to the sensor 200. In this way, on the one hand, the heat transferred from the outside to the sensor 200 can be reduced, and on the other hand, the cooling medium in the second cooling channel 160 can also carry away the heat of the sensor 200, so that the temperature of the sensor 200 will not be too high. It can be seen that this embodiment, by setting the second cooling channel 160, achieves thermal isolation of the sensor 200 as much as possible, thereby avoiding the problem of the sensor 200 overheating.

[0043] The tool holder 100 provided in this embodiment has a first mounting groove 110 for accommodating the sensor 200, so that the sensor 200 can be at least partially embedded in the tool holder 100. While ensuring detection accuracy, the size of the tool including the tool holder 100 and the sensor 200 can be small, which is beneficial for tool miniaturization. Furthermore, the tool holder 100 has a first cooling channel 150 and a second cooling channel 160. The first cooling channel 150 is used to provide a cooling medium to the cooling outlet 130 to cool the blade installed in the second mounting groove 140. 300. The second cooling channel 160 is arranged around the first mounting groove 110, so that the second cooling channel 160 is arranged around the sensor 200. The heat on the sensor 200 can be conducted to the cooling medium in the second cooling channel 160 through the tool holder 100, thereby cooling the sensor 200. At the same time, it reduces the amount of heat transferred from the blade 300 to the sensor 200, reduces the risk of the sensor 200 overheating, and thus reduces the risk of signal drift caused by the sensor 200 due to overheating, thereby improving the monitoring accuracy.

[0044] In one embodiment, such as Figure 3 As shown, in the length direction of the tool holder 100, the first cooling inlet 120 is located between the first mounting groove 110 and the cooling outlet 130. That is, in the length direction of the tool holder 100, the first cooling inlet 120 is located between the sensor 200 and the cooling outlet 130. Thus, the cooling medium flowing in from the first cooling inlet 120 can be divided into two paths: one flows through the first cooling channel 150 to the cooling outlet 130, and the other flows into the second cooling channel 160. This results in both the first and second cooling channels having relatively low temperatures. On one hand, the first cooling channel 150 can be shorter, improving the cooling effect on the blade 300 and removing more heat from it. On the other hand, the large temperature difference between the cooling medium in the second cooling channel 160 and the sensor 200 improves the heat exchange efficiency between them, thereby enhancing the cooling effect on the sensor 200. Furthermore, by placing the first cooling inlet 120 between the first mounting groove 110 and the cooling outlet 130, the first cooling inlet 120 can block heat from the first mounting groove 110, thereby reducing the transfer of heat from the blade 300 to the first mounting groove 110 and the sensor 200.

[0045] It is understandable that the first cooling inlet 120 may not be located between the cooling outlet 130 and the first mounting groove 110, but may be located opposite to the first mounting groove 110, or the first cooling inlet 120 may be located on the side of the first mounting groove 110 away from the cooling outlet 130. This embodiment does not limit this.

[0046] In some alternative embodiments, please continue to refer to Figure 3 The second cooling channel 160 is positioned across the first mounting groove 110 along the length of the tool holder 100, meaning that both ends of the second cooling channel 160 extend beyond the length of the first mounting groove 110. This allows the second cooling channel 160 to have a larger cooling area, improving the enclosure effect of the first mounting groove 110 and further enhancing the cooling effect on the sensor 200. This prevents overheating of the sensor 200 and ensures the monitoring accuracy of the sensor 200.

[0047] It should be noted that the width of the tool holder 100 is usually small. Therefore, in order to make the size of the sensor 200 not limited by the width of the tool holder 100, the length direction of the sensor 200 is usually the same as the length direction of the tool holder 100. By setting the second cooling channel 160 across the sensor 200 along the length direction of the tool holder 100, the heat insulation effect of the sensor 200 can be improved.

[0048] Cutting tools are typically used in conjunction with machine tools. Different machine tools have different outlet locations for their cooling systems. To broaden the applicability of the tool holder 100, alternatively, such as... Figure 1 or Figure 3 As shown, the surface of the tool holder 100 is also provided with a second cooling inlet 170. Wherein, as... Figure 3 As shown, the tool holder 100 is provided with a first inlet channel 121. One end of the second cooling channel 160 and the first cooling channel 150 are both connected to the first inlet channel 121, and the first inlet channel 121 is connected to the first cooling inlet 120. The second cooling inlet 170 is connected to the end of the second cooling channel 160 facing away from the first inlet channel 121. By providing the second cooling inlet 170, on the one hand, the cooling medium of the machine tool's cooling device can flow to the second cooling channel 160 through the second cooling inlet 170 to achieve thermal insulation of the sensor 200, and the cooling medium in the second cooling channel 160 can flow to the first cooling channel 150 through the first inlet channel 121 to cool the cutting tool 300; on the other hand, the first cooling inlet 120 and the second cooling inlet 170 are located at different positions on the tool holder 100, so that the cutting tool including the tool holder 100 can be more widely used in different machine tools, can meet the connection with the cooling devices of different machine tools, and has higher versatility and flexibility.

[0049] In some optional embodiments, one or more first cooling inlets 120 and one or more second cooling inlets 170 may be provided; this embodiment is not limited in this respect. This further enables the tool holder 100 to adapt to various machine tools, broadening its applicability and enhancing its versatility.

[0050] When the tool holder 100 is provided with a first cooling inlet 120 and a second cooling inlet 170, the tool holder 100 has at least the following three working modes.

[0051] In the first working mode, the first cooling inlet 120 is open and the second cooling inlet 170 is closed. At this time, the cooling medium flows from the first cooling inlet 120 to the first cooling channel 150 and the second cooling channel 160 to cool the blade 300 and achieve thermal isolation of the sensor 200.

[0052] In the second working mode, the first cooling inlet 120 is closed and the second cooling inlet 170 is open. Since the second cooling channel 160 is connected to the first cooling channel 150 through the first inlet channel 121, the cooling medium in the second cooling channel 160 can flow out from the cooling outlet 130 after passing through the first inlet channel 121 and the first cooling channel 150 to cool the blade 300.

[0053] In the third operating mode, both the first cooling inlet 120 and the second cooling inlet 170 are open. In this mode, cooling medium can be input into the tool holder 100 through both the first cooling inlet 120 and the second cooling inlet 170. The cooling medium entering through the first cooling inlet 120 enters the first cooling channel 150, and the cooling medium entering through the second cooling inlet 170 enters the second cooling channel 160. This results in a lower temperature for the cooling medium in both the first cooling channel 150 and the second cooling channel 160, thereby improving the cooling effect on the tool holder 300 and the sensor device 200.

[0054] All three operating modes can simultaneously cool the blade 300 and the sensor 200, and can be selected according to the actual situation.

[0055] To enable switching between the three operating modes, the tool holder 100 may optionally include a sealing element that can seal the first cooling inlet 120 and the second cooling inlet 170, thereby achieving closure of the first cooling inlet 120 and the second cooling inlet 170. In this embodiment, the first cooling inlet 120 is selectively sealed with a sealing element; the second cooling inlet 170 is selectively sealed with a sealing element. The sealing element includes, but is not limited to, screws, to improve the connection strength between the sealing element and the tool holder 100 and to prevent the connection between the sealing element and the tool holder 100 from failing due to high pressure of the cooling medium. A sealing ring is provided between the sealing element and the first cooling inlet 120 and the second cooling inlet 170 to prevent cooling leakage.

[0056] In one possible implementation, such as Figure 1As shown, the second cooling inlet 170 is located on the end face of the tool holder 100 facing away from the second mounting groove 140. In this way, on the one hand, it is convenient to connect and communicate between the tool holder 100 and the cooling device; on the other hand, it is convenient for the second cooling channel 160 to cross the first mounting groove 110 along the length direction of the tool holder 100, and the bending angle of the second cooling channel 160 is not too small, thereby reducing the flow resistance of the second cooling channel 160.

[0057] It is understood that the second cooling inlet 170 may also be provided on the side wall of the tool holder 100, but this embodiment does not limit this.

[0058] The sensor 200 can be a wired communication structure or a wireless communication structure. In this embodiment, the sensor 200 is a wired communication structure. To facilitate the configuration of the lead wires of the sensor 200, in one possible implementation, such as... Figure 3 As shown, the tool holder 100 also includes a cable channel 180. One end of the cable channel 180 is connected to the first mounting groove 110, and the other end extends to the surface of the tool holder 100, forming a cable opening 181. A lead wire passes through the cable channel 180 and connects to the sensor 200 located in the first mounting groove 110. The second cooling channel 160 is positioned to avoid the cable channel 180; that is, the second cooling channel 160 and the cable channel 180 are independent of each other to avoid mutual interference.

[0059] In some alternative embodiments, such as Figure 2 As shown, the cable port 181 is located on the end face of the tool holder 100 facing away from the second mounting groove 140, that is, the cable port 181 and the second cooling inlet 170 are located on the same end face. In this way, the direction of the second cooling channel 160 is roughly the same as the direction of the lead wire. The cooling medium in the second cooling channel 160 can also thermally insulate the lead wire in the cable channel 180, avoiding the lead wire from overheating and improving the safety of tool use.

[0060] To further improve the cooling effect on the sensor 200, such as Figure 3 or Figure 4 As shown, the second cooling channel 160 has multiple channels. This further enhances the enclosure effect on the sensor 200, thereby completely preventing heat transfer from the blade 300 to the sensor 200.

[0061] In this embodiment, one end of each second cooling channel 160 is connected to the first inlet channel 121, allowing the cooling medium in the second cooling channel 160 to flow into each first inlet channel 121. The tool holder 100 also has a second inlet channel 171, which is connected to the second cooling inlet 170. The other end of each second cooling channel 160 is also connected to the second inlet channel 171. This can be understood as multiple second cooling channels 160 being arranged in parallel between the first inlet channel 121 and the second inlet channel 171. Under the first operating mode described above, the cooling medium in the first inlet channel 121 can flow through several of the second cooling channels 160 to the second inlet channel 171, and the cooling medium at the second inlet channel 171 can then flow through the remaining second cooling channels 160 to the first inlet channel 121, forming a cooling loop and further improving the thermal insulation effect on the sensor 200.

[0062] It should be noted that, in order to avoid the first mounting groove 110 and the cable channel 180, there are second cooling channels 160 that need to be bent at both ends. In this embodiment, in order to reduce flow resistance, the bending angle of the second cooling channel 160 is greater than 90°.

[0063] In one embodiment, at least one side of the first mounting groove 110 in the width direction is provided with a second cooling channel 160 to insulate the sensor element 200 from heat in the width direction of the first mounting groove 110. In this embodiment, as... Figure 3 As shown, multiple second cooling channels 160 are provided on both sides of the width direction of the first mounting groove 110, and the second cooling channels 160 on both sides can be arranged symmetrically.

[0064] In other embodiments, at least one side of the first mounting groove 110 in the depth direction is provided with a second cooling channel 160. Alternatively, at least one side of the first mounting groove 110 in the width direction and at least one side in the depth direction are both provided with second cooling channels 160. The specific selection and design can be based on the heat generation of the sensor 200. For example, the first mounting groove 110 has second cooling channels 160 on both sides in the width direction, and each side has four second cooling channels 160 along the depth direction.

[0065] Optionally, the tool holder 100 in this embodiment can be a one-piece structure or a split structure. This embodiment provides a tool holder 100, such as... Figure 1 and Figure 2As shown, the tool holder 100 includes a tool holder body 190 and a pressure block 1a connected to the tool holder body 190. The pressure block 1a and the tool holder body 190 cooperate to form a second mounting groove 140. The first mounting groove 110, the second cooling channel 160, the first cooling inlet 120, the second cooling inlet 170, the cable port 181, and the cable channel 180 are all located in the tool holder body 190. It should be noted that the tool holder body 190 and the pressure block 1a are detachably connected by a second fastener 600 such as bolts to facilitate the replacement of the cutting tool 300.

[0066] For example, such as Figure 4 and Figure 5 As shown, the first cooling channel 150 includes a first sub-channel 151 located on the tool holder body 190 and a second sub-channel 152 located on the pressure block 1a. The first sub-channel 151 and the second sub-channel 152 are connected and can be connected via a connector to reduce the risk of leakage. The first sub-channel 151 is connected to the first cooling inlet 120, the cooling outlet 130 is located on the pressure block 1a, and the second sub-channel 152 is connected to the cooling outlet 130. By setting the pressure block 1a, the cutting tool 300 can be restricted, thereby increasing the connection strength between the cutting tool 300 and the tool holder 100. By placing the second sub-channel 152 on the pressure block 1a, the cooling outlet 130 can be closer to the cutting tool 300, thereby improving the cooling effect on the cutting tool 300.

[0067] To increase the pressure of the cooling medium ejected from the cooling outlet 130, in some optional embodiments, the area of ​​the cooling outlet 130 is smaller than the flow area of ​​the second sub-channel 152. Thus, when the cooling medium in the second sub-channel 152 is ejected from the cooling outlet 130, the sudden reduction in flow area increases the pressure of the cooling medium at the cooling outlet 130, thereby increasing the ejection pressure of the cooling medium. In this embodiment, the flow area of ​​the second sub-channel 152 is equal to the flow area of ​​the first sub-channel 151, which reduces energy loss of the cooling medium at the connection between the first sub-channel 151 and the second sub-channel 152. It should be noted that when the cooling outlet 130 is a circular opening, and both the first sub-channel 151 and the second sub-channel 152 are circular channels, the diameter of the cooling outlet 130 is smaller than the diameter of the second sub-channel 152, and the diameter of the second sub-channel 152 is equal to the diameter of the first sub-channel 151.

[0068] Further optional, such as Figure 2 As shown, the tool holder 100 also includes a pressure plate 101, which is detachably connected to the tool holder 100 and can open or close the first mounting groove 110, thereby cooperating with the first mounting groove 110 to form a mounting cavity, in which the sensor element 200 is located. This achieves the limitation of the sensor element 200, preventing it from falling out of the first mounting groove 110 and improving the safety of the tool.

[0069] In one embodiment, the sensor 200 is a strain sensor. The sensor 200 is installed in the first mounting groove 110 by screws with a preload force of not less than 1000N, so that the sensing surface of the sensor 200 is in close contact with the bottom of the first mounting groove 110, thereby improving the integration of the sensor 200 and the tool holder 100 and enabling the sensor 200 to more accurately sense the strain force of the tool holder 100.

[0070] In this embodiment, when the tool holder 100 includes a pressure plate 101, such as Figure 2 As shown, the pressure plate 101 is provided with a fixing hole 1013. The screw for fixing the sensor component 200 passes through the fixing hole 1013 and the through hole on the sensor component and is connected to the bottom of the first mounting groove 110 so as to apply a preload force of not less than 1000N to the sensor component 200 through the pressure plate 101.

[0071] In one possible implementation, such as Figure 2 As shown, the sensor 200 includes a larger head 210 and a cable connector 220 connected to the head 210. The cross-sectional dimension of the cable connector 220 is smaller than that of the head. The head 210 is used to sense the strain force of the tool holder 100. To better limit the position of the sensor 200 and prevent it from wobbling left and right in the first mounting groove 110, see, for an example, see... Figure 2 The first mounting groove 110 includes a first sub-groove 111 adjacent to the second mounting groove 140 and a second sub-groove 112 communicating with the first sub-groove 111 and extending along the length direction of the tool holder. In the width direction of the tool holder, the size of the first sub-groove 111 is larger than the size of the second sub-groove 112. The first sub-groove 111 is used to accommodate and limit the head 210 of the sensor 200 to further reduce the risk of head 210 wobbling and ensure the integrity of the head 210 and the tool holder 100. For example, the sidewall of the head 210 abuts against the sidewall of the first sub-groove 111 to limit the head 210. The second sub-groove 112 is used to accommodate the cable connector 220 of the sensor 200.

[0072] Adapted to the first mounting groove 110, the second pressure plate 101 includes a first plate portion 1011 and a second plate portion 1012 connected to each other. The first plate portion 1011 is mounted in the first sub-groove 111 and abuts against the head 210. The aforementioned fixing hole 1013 is provided on the first plate portion 1011, passes through the through hole on the head 210, and connects to the bottom of the first sub-groove 111, thereby applying a preload force of not less than 1000N to the head 210. The second plate portion 1012 is mounted in the second sub-groove 112.

[0073] This embodiment also provides a cutting tool that can have a small size and reduce the risk of sensor signal drift.

[0074] For example, such as Figure 1 and Figure 2 As shown, the cutting tool includes the aforementioned tool holder 100. The cutting tool also includes a sensor element 200 and a cutting blade 300. The sensor element 200 is mounted in the first mounting slot 110, and the cutting blade 300 is mounted in the second mounting slot 140. Cooling medium flowing from the cooling outlet 130 cools the cutting blade 300, and cooling medium in the second cooling channel 160 cools the sensor element 200.

[0075] In this embodiment, the sensor 200 can be a sensor, such as a position sensor, displacement sensor, angle sensor, etc. This embodiment does not limit this.

[0076] In some alternative embodiments, such as Figure 1 and Figure 2 As shown, the cutting tool also includes a tool pad 400, which is disposed in the second mounting groove 140 and located below the cutting blade 300 to support the cutting blade 300.

[0077] In this embodiment, the blade 300 and the blade pad 400 are detachably connected to the blade holder body 190 of the blade holder 100 via a first fastener 500. The first fastener 500 can be a bolt or the like, and this embodiment does not limit its application.

[0078] The tool holder 100 and cutting tool provided in this embodiment have a second cooling channel 160 that can cover the first mounting slot 110 for mounting the sensor 200, thus mitigating signal drift of the sensor 200 caused by heat conduction during the cutting process. Furthermore, the temperature of the sensor 200 is stabilized, improving the sensitivity of tool machining signal monitoring. Simultaneously, by providing multiple second cooling channels 160, the flow rate of the cooling medium is guaranteed, achieving effective cooling of the cutting tool. This embodiment is designed with a first cooling inlet 120 and a second cooling inlet 170, making it more widely applicable to machine tools and capable of connecting with the cooling devices of different machine tools.

[0079] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A knife bar, characterized in that The surface of the tool holder is provided with a first mounting groove (110), a first cooling inlet (120) and a cooling outlet (130). One end of the tool holder is provided with a second mounting groove (140) for mounting a cutting blade (300). The tool holder is provided with a first cooling channel (150) and a second cooling channel (160). The first cooling channel (150) connects the first cooling inlet (120) and the cooling outlet (130). The second cooling channel (160) connects the first cooling inlet (120) and is wound around the first mounting groove (110). The first mounting groove (110) is used to mount a sensor (200).

2. The knife bar of claim 1, wherein, Along the length of the tool holder, the first cooling inlet (120) is located between the first mounting groove (110) and the cooling outlet (130).

3. The knife bar of claim 1, wherein, The second cooling channel (160) is provided across the first mounting slot (110) along the length of the tool bar.

4. The knife bar of any of claims 1-3, wherein, The tool holder is also provided with a second cooling inlet (170), which is located on the end face of the tool holder facing away from the second mounting groove (140); the tool holder is provided with a first inlet channel (121), one end of the second cooling channel (160) and the first cooling channel (150) are both connected to the first inlet channel (121), and the first inlet channel (121) is connected to the first cooling inlet (120); the second cooling inlet (170) is connected to the end of the second cooling channel (160) facing away from the first inlet channel (121).

5. The knife bar of claim 4, wherein, The tool holder also includes a sealing component; The first cooling inlet (120) is selectively sealed with the plug; and / or the second cooling inlet (170) is selectively sealed with the plug.

6. The knife bar of any of claims 1-3, wherein, The sensor (200) is a strain sensor. The sensor (200) is installed in the first mounting groove (110) by screws with a preload force of not less than 1000N, so that the sensing surface of the sensor (200) is in close contact with the bottom of the first mounting groove (110).

7. The knife bar of any of claims 1-3, wherein, The second cooling channel (160) has multiple channels; The first mounting groove (110) has at least one side of the width direction provided with the second cooling channel (160); and / or, the first mounting groove (110) has at least one side of the depth direction provided with the second cooling channel (160).

8. The knife bar of any of claims 1-3, wherein, The tool holder is also provided with a cable channel (180), one end of which is connected to the first mounting groove (110), and the other end of which extends to the surface of the tool holder and forms a cable opening (181); the second cooling channel (160) is provided to avoid the cable channel (180).

9. The knife bar of any of claims 1-3, wherein, The tool holder includes a tool holder body (190), a pressure block (1a) connected to the tool holder body (190), and a pressure plate (101) installed in the first mounting groove (110); The pressure block (1a) and the tool holder body (190) cooperate to form the second mounting groove (140). The first mounting groove (110), the second cooling channel (160), and the first cooling inlet (120) are all located on the tool holder body (190). The first cooling channel (150) includes a first sub-channel (151) located on the tool holder body (190) and a second sub-channel (152) located on the pressure block (1a). The first sub-channel (151) is connected to the first cooling inlet (120). The cooling outlet (130) is located on the pressure block (1a), and the second sub-channel (152) is connected to the cooling outlet (130). The area of ​​the cooling outlet (130) is smaller than the flow area of ​​the second sub-channel (152), and the flow area of ​​the second sub-channel (152) is equal to the flow area of ​​the first sub-channel (151). The first mounting groove (110) includes a first sub-groove (111) near the second mounting groove (140) and a second sub-groove (112) communicating with the first sub-groove (111); in the width direction of the tool bar, the size of the first sub-groove (111) is larger than the size of the second sub-groove (112); the pressure plate (101) includes a first plate portion (1011) and a second plate portion (1012) connected to each other, the first plate portion (1011) is mounted in the first sub-groove (111), and the second plate portion (1012) is mounted in the second sub-groove (112).

10. A tool, characterised in that The tool includes the tool holder as described in any one of claims 1-9, and the tool further includes a sensor element (200) and a blade (300), the sensor element (200) being mounted in the first mounting slot (110) and the blade (300) being mounted in the second mounting slot (140).

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