Knife handle

Abstract

The utility model discloses a knife handle, which belongs to the technical field of signal monitoring and comprises a cover plate, a shell and a cushion block, the cover plate is coaxially mounted on the shell and forms an accommodating space, the cushion block is coaxially mounted in the accommodating space, at least one mounting plate is circumferentially arranged on the cushion block, and a vibration monitoring module is mounted on the mounting plate. The cushion block is directly installed on the knife handle body in an interference fit mode, the number of units between the vibration source and the vibration sensor is effectively reduced, and the monitoring device has high sensitivity. Meanwhile, the monitoring device is simple in structure and small in size, the problem that vibration source signals are weakened due to the fact that the monitoring device is too large can be effectively solved, and the accuracy of the monitoring device is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of signal monitoring technology, and in particular to a knife handle. Background Technology

[0002] During milling, improper machining parameter settings, unstable clamping force, tool wear, or non-compliant cutting edge manufacturing often lead to tool vibration. This vibration affects the cutting force and transmits chatter to the workpiece, resulting in decreased product surface quality and low machining efficiency. Therefore, high-precision real-time monitoring of the tool during machining is necessary to ensure both machining efficiency and quality.

[0003] In existing technologies, there are two main types of devices for monitoring tool vibration: one type attaches the sensor to the workpiece surface, but the measurement data fluctuates significantly with changes in the machining position, and the accuracy of the data in representing chatter is poor if the distance from the vibration source is far. The other type integrates the sensor, power module, and chip onto the tool holder, but existing monitoring devices are often too large due to unreasonable installation methods or space allocation, and the vibration transmission chain from the vibration source to the sensor is too long, resulting in low sensor sensitivity to tool vibration and large deviations in measurement results. In addition, existing monitoring devices require threaded grooves in the circumferential direction of the tool holder, leading to poor versatility and difficulty in ensuring stability during high-speed tool operation. Utility Model Content

[0004] This invention aims to overcome the problem of low vibration monitoring sensitivity in existing tool holders and provides a tool holder.

[0005] To achieve the above objectives, the present invention provides a tool holder, comprising a tool holder body and a monitoring device, wherein the monitoring device is coaxially mounted on the tool holder body, a first end of the tool holder body is connected to a cutting tool, and a second end of the tool holder body is connected to a device.

[0006] In one embodiment, the tool holder monitoring device includes a cover plate, a housing, and a pad. The cover plate is coaxially mounted on the housing and forms a receiving space. The pad is coaxially mounted in the receiving space. At least one mounting plate is circumferentially arranged on the pad, and a vibration monitoring module is mounted on the mounting plate.

[0007] In one embodiment, a charging module is mounted on the mounting plate, and the vibration monitoring module is electrically connected to the charging module.

[0008] In one embodiment, a fourth through hole is formed at the center of the pad to install the column.

[0009] In one embodiment, the housing includes a second flange, a second through hole, and a third flange. The second flange is formed at a first end of the housing, the second through hole is formed at a center at a second end of the housing, and the third flange is formed at the outer edge of the second through hole.

[0010] In one embodiment, a fourth flange is provided at the second end of the pad, and the third flange and the fourth flange are fitted together.

[0011] In one embodiment, the cover plate includes a first through hole, at least one mounting hole, at least one first groove, at least one first threaded hole, and a first flange. The first through hole is centrally located on the cover plate. At least one mounting hole and at least one first groove are radially located on the outer edge of the first through hole. The groove and the mounting hole are arranged alternately. At least one first threaded hole is uniformly located around the first through hole. The first flange is located on the outer edge of the cover plate.

[0012] In one embodiment, the first end of the pad is embedded in the first through hole, the first end of the mounting plate is embedded in the first groove, and the first flange and the second flange are engaged.

[0013] In one embodiment, the first threaded hole is aligned with a second threaded hole axially formed in the boss structure.

[0014] In one embodiment, the tool holder body includes a column and a boss structure, the boss structure being coaxially disposed on the column.

[0015] In summary, this utility model provides a tool holder. By directly mounting the pad onto the tool holder body with an interference fit, the number of units between the vibration source and the vibration sensor is effectively reduced, resulting in higher sensitivity of the monitoring device. Simultaneously, the monitoring device has a simple structure and small size, effectively avoiding the problem of weakened vibration source signals caused by an excessively large monitoring device, thus ensuring the accuracy of the monitoring device.

[0016] To make the above-mentioned features and advantages of the utility model more apparent and understandable, specific embodiments are described below, and detailed descriptions are provided in conjunction with the accompanying drawings. Attached Figure Description

[0017] Figure 1 A schematic diagram of the knife handle provided by this utility model.

[0018] Figure 2 for Figure 1 Exploded view.

[0019] Figure 3 A schematic diagram of the cover plate for the monitoring device in the tool holder provided by this utility model.

[0020] Figure 4 A schematic diagram of the housing of the monitoring device in the tool holder provided by this utility model.

[0021] Figure 5 A schematic diagram of the pad block for the monitoring device in the tool holder provided by this utility model. Detailed Implementation

[0022] To make the objectives and technical solutions of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0023] Figure 1 A schematic diagram of the knife handle provided by this utility model is shown below. Figure 1 As shown, the knife handle includes a knife handle body 2 and a monitoring device 1, which is coaxially mounted on the outside of the knife handle body 2. The monitoring device 1 is in direct contact with the knife handle body 2, therefore, the vibration signal on the knife handle body 2 can be directly transmitted to the monitoring device 1, shortening the vibration transmission chain length.

[0024] Figure 2 for Figure 1 Exploded view, such as Figure 2 As shown, the tool holder body 2 includes a column 21 and a boss structure 22, the boss structure 22 being coaxially disposed on the column 21. One end of the boss structure 22 is provided with a third plane 23, and at least one second threaded hole 24 is formed on the third plane 23.

[0025] The monitoring device 1 includes a cover plate 11, a housing 12, and a pad 13. The cover plate 11 is coaxially mounted on the housing 12 and forms a receiving space (not shown in the figure). The pad 13 is coaxially mounted in the receiving space.

[0026] like Figure 3As shown, the cover plate 11 includes a cover plate body 111, a first plane 112, a second plane 113, a first through hole 114, at least one mounting hole 115, at least one first groove 116, at least one first threaded hole 117, and a first flange 118. The first plane 112 is located at the first end of the cover plate body 111, and the second plane 113 is located at the second end of the cover plate body 111. The first through hole 114 is centrally located on the cover plate body 111 and penetrates the cover plate body 111. At least one mounting hole 115 and at least one first groove 116 are radially formed on the outer edge of the first through hole 114. The mounting hole 115 penetrates the cover plate body 111 and is connected to the first through hole 114. The first groove 116 is formed on the second plane 113. The first groove 116 and the mounting hole 115 are evenly staggered. At least one first threaded hole 117 is evenly formed around the first through hole 114. The first flange 118 is disposed on the outer edge of the cover plate body 111. The cover plate body 111 is cylindrical. The cover plate 11 and the boss structure 22 of the tool holder 2 (see...) Figure 2 The axial connection serves to axially fix the monitoring device 1. The first through hole 114 is a circular hole for fitting the pad 13. The mounting hole 115 is a square hole flared outward from the first through hole 114 for accommodating the mounting plate on the pad 13. The first groove 116 is a square groove for mounting the power module. The first threaded hole 117 is a through hole, and the first threaded hole 117 and the second threaded hole 24 (see...) Figure 2 The quantity and location match.

[0027] like Figure 4 As shown, the outer casing 12 includes an outer casing body 121, a fourth plane 122, a fifth plane 123, a second through hole 124, a third through hole 125, a second flange 126, and a third flange 127. The fourth plane 122 is located at the first end of the outer casing body 121, and the fifth plane 123 is located at the second end of the outer casing body 121. The second through hole 124 is centrally located on the outer casing body 121, and the third flange 127 is provided on the outer edge of the second through hole 124. The third through hole 125 is provided on the fifth plane 123, and the second flange 126 is provided on the fourth plane 122. The outer casing body 121 is cylindrical and has a hollow internal structure to accommodate the pad 13 (see...). Figure 2The housing 121 contains a circuit element (not shown in the figure) that protects internal signals from external interference and prevents interference from dust, water, or other impurities. The circuit element is fixedly installed on the inner wall and bottom of the housing body 121. This circuit element is used to monitor signals other than vibration. The circuit element can be secured using industrial sealant or other methods. The second through-hole 124 is centered on the fifth plane 123 to accommodate the pad 13, and the third flange 127 engages with the fourth flange on the pad 13. The third through-hole 125 is a reserved charging port and can also be used to fix the device during installation. The second flange 126 is located on the outer edge of the housing 12, and it engages with the first flange 118 and is sealed with adhesive.

[0028] like Figure 5 As shown, the pad 13 includes a pad body 131, a sixth plane 132, a seventh plane 133, a fourth through hole 134, at least one mounting plate 135, at least one third threaded hole 136, and a fourth flange 137. The sixth plane 132 is located at the first end of the pad body 131, and the seventh plane 133 is located at the second end of the pad body 131. The fourth through hole 134 is centrally located on the pad body 131. At least one mounting plate 135 is circumferentially arranged on the pad body 131, and at least one third threaded hole 136 is formed on the mounting plate 135. The fourth flange 137 is located on the seventh plane 133. The pad body 131 is cylindrical, and at least one square mounting plate 135 protrudes outward from the outer wall of the pad body 131. A vibration monitoring module (not shown in the figure) and a charging module (not shown in the figure) are mounted on the mounting plate 135 and secured with screws. The vibration monitoring module and the charging module are electrically connected. The column 21 is inserted into the fourth through hole 134 (see...) Figure 2 The fourth through hole 134 is interference-fitted with the column 21. The fourth flange 137 and the third flange 127 are matched in shape and size, and the fourth flange 137 and the third flange 127 are interlocked and sealed with glue.

[0029] Combination Figures 1 to 5 It is understood that before using the monitoring device 1, the cover plate 11 needs to be installed on the knife handle 2, and the column 21 is inserted into the first through hole 114, with a clearance fit between the column 21 and the first through hole 114. The first plane 112 of the cover plate 11 is in direct contact with the third plane 23 of the knife handle 2, and the first threaded hole 117 and the second threaded hole 24 are aligned and tightened with screws to achieve a fixed connection between the cover plate 11 and the knife handle 2. A power module of matching size is installed in any of the first grooves 116.

[0030] The column 21 is installed in the fourth through hole 134 of the pad 13, and the fourth through hole 134 and the column 21 are installed by an interference fit. This design eliminates the screw hole structure opened around the column 21, which is used in the prior art to install and fix the screws connecting the monitoring device and the tool handle. Eliminating the screw hole structure not only effectively avoids the situation where the screws loosen when the tool handle rotates at high speed and the monitoring device falls off, but also avoids damage to the original structure of the tool handle, effectively ensuring the versatility of the device and the stability of the connection. The vibration monitoring module and the charging module are installed on the mounting plate 135 and fixed by screws, realizing the separation of the vibration monitoring module from other modules, optimizing the internal installation space, reducing the size and additional weight of the monitoring device 1, preventing the phenomenon of severe attenuation of the vibration source signal due to excessive size, and ensuring the accuracy of the acquired vibration data. The sixth plane 132 of the pad 13 passes through the first through hole 114 of the cover plate 11, and the sixth plane 132 is in direct contact with the first plane 112 of the cover plate 11. At the same time, the first end of the pad 13 is embedded in the first through hole 114, and the same end of the mounting plate 135, the vibration monitoring module and the charging module is embedded in the first groove 116.

[0031] The power module is installed on the inner wall and bottom of the outer casing 121 and fixed with glue. The column 21 passes through the second through hole 124 of the outer casing 12, and the second through hole 124 is coaxially installed with the first through hole 114 and the fourth through hole 134. The fourth plane 122 of the outer casing 12 is in direct contact with the second plane 113 of the cover plate 11. The outer casing 12 and the cover plate 11 are connected by fitting the first flange 118 and the second flange 126 and are sealed. The fifth plane 123 of the outer casing 12 is in direct contact with the seventh plane 133 of the pad 13. The outer casing 12 and the pad 13 are connected by fitting the third flange 127 and the fourth flange 137 and are also sealed. The sealing can be done with glue or other sealing methods depending on the actual situation to ensure the sealing and integrity of the monitoring device 1 and prevent internal moisture from interfering with the internal signal.

[0032] After the monitoring device 1 is installed on the tool holder 2, a cutting tool (not shown in the figure) is mounted on the first end of the tool holder 2, and the second end of the tool holder 2 is mounted on an external device, such as the spindle of a machine tool (not shown in the figure). The spindle will provide power to the tool holder and drive the cutting tool to perform cutting operations.

[0033] During use, the monitoring device 1 operates with the handle 2 as the vibration source and the column 21 in direct contact with the pad 13, allowing vibration signals to be directly transmitted to the pad 13. The vibration sensor in the vibration monitoring module on the pad 13 receives the vibration signal and performs preprocessing using the built-in data processing algorithm. Simultaneously, the Bluetooth transmission unit in the vibration monitoring module transmits the vibration data to a host computer in real time for subsequent data processing and analysis. The sensing unit can utilize a MEMS vibration sensor. This design shortens the transmission chain from the vibration source to the vibration sensor unit, improving the real-time performance and accuracy of vibration data acquisition and ensuring the monitoring device 1's sensitivity to flutter.

[0034] In summary, this utility model provides a tool holder that effectively reduces the number of units between the vibration source and the vibration sensor by directly mounting the pad 13 onto the column 21 with an interference fit, thereby enabling the monitoring device 1 to have high sensitivity. Simultaneously, the monitoring device 1 has a simple structure and small size, effectively avoiding the problem of weakened vibration source signals due to an excessively large monitoring device 1, thus ensuring the accuracy of the monitoring device 1.

[0035] Although the present invention has been disclosed above by way of embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A knife handle, characterized in that, The device includes a tool holder body and a monitoring device. The monitoring device is coaxially mounted on the tool holder body. A first end of the tool holder body is connected to a cutting tool, and a second end of the tool holder body is connected to a device. The monitoring device includes a cover plate, a housing, and a pad. The cover plate is coaxially mounted on the housing and forms a receiving space. The pad is coaxially mounted in the receiving space. At least one mounting plate is arranged circumferentially on the pad, and a vibration monitoring module is mounted on the mounting plate.

2. The knife handle as described in claim 1, characterized in that, A charging module is mounted on the mounting plate, and the vibration monitoring module is electrically connected to the charging module.

3. The knife handle as described in claim 1, characterized in that, A fourth through hole is opened in the center of the pad to install the column.

4. The knife handle as described in claim 3, characterized in that, The housing includes a second flange, a second through hole, and a third flange. The second flange is located at the first end of the housing, the second through hole is located at the center of the second end of the housing, and the third flange is provided on the outer edge of the second through hole.

5. The knife handle as described in claim 4, characterized in that, The second end of the pad is provided with a fourth flange, and the third flange and the fourth flange are fitted together.

6. The knife handle as described in claim 5, characterized in that, The cover plate includes a first through hole, at least one mounting hole, at least one first groove, at least one first threaded hole, and a first flange. The first through hole is centrally located on the cover plate. At least one mounting hole and at least one first groove are radially located on the outer edge of the first through hole. The groove and the mounting hole are arranged alternately. At least one first threaded hole is uniformly located around the first through hole. The first flange is located on the outer edge of the cover plate.

7. The knife handle as described in claim 6, characterized in that, The first end of the pad is embedded in the first through hole, the first end of the mounting plate is embedded in the first groove, and the first flange and the second flange are engaged.

8. The knife handle as described in claim 7, characterized in that, The first threaded hole is aligned with the second threaded hole axially opened in the boss structure.

9. The knife handle as described in claim 1, characterized in that, The tool holder body includes a column and a boss structure, the boss structure being coaxially disposed on the column.

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