Hobbing cutter

Abstract

The invention belongs to the technical field of cutting tools, and particularly relates to a hobbing tool which comprises a wheel ring and teeth, 3-18 teeth are evenly distributed on the outer side of the wheel ring in the axial direction, and the teeth incline by 1-30 degrees along the axis; cutting teeth are arranged on one sides of the teeth, grinding teeth are arranged on the other sides of the teeth, grooves for cutting are formed between the sawteeth, the grooves are arc-shaped or square, 1-20 grooves are distributed on the same tooth side by side, the grooves can cut and form a plate, a plurality of bamboo canes can be cut at a time, and therefore the cutting number in unit time can be increased; and after cutting, the grinding teeth on the other sides of the teeth grind the cutting end face, cutting and grinding machining operation is completed synchronously, the cutting efficiency is further improved, and therefore the yield can be increased.

Description

Technical Field

[0001] This invention relates to the field of cutting tool technology, specifically to hobbing tools. Background Technology

[0002] With the advocacy of replacing plastic with bamboo, the demand for disposable chopsticks, bamboo strips, and other products in the bamboo products industry continues to grow. During bamboo processing, a rotary cutter is used to cut bamboo strips. As a core tool in areas such as composite material cutting, the performance of the rotary cutter directly affects processing accuracy, production efficiency, and equipment operational safety.

[0003] Existing rolling cutters, such as double-blade roller rolling cutters, are usually continuous rolling cutters with two rollers rotating relative to each other and two blades interlocking. However, they cannot cut multiple bamboo strips at once. Furthermore, traditional cutters often use a single cutting or grinding structure, requiring multiple processes to complete the cutting and grinding process. This not only increases processing time but also easily leads to positioning errors due to process transitions, ultimately resulting in low cutting efficiency.

[0004] For the reasons mentioned above, we proposed the hobbing cutter. Summary of the Invention

[0005] The purpose of this invention is to provide a rolling cutter to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a hobbing cutter, comprising upper and lower sets that are driven independently, each hobbing cutter comprising a ring and teeth, the outer side of the ring having 3-18 teeth distributed along the axial direction, the teeth being inclined at 1-30 degrees along the axis; one side of the teeth is provided with cutting teeth, and the other side is provided with grinding teeth;

[0007] The outermost end of the tooth is uniformly welded with serrations, and the serrations are set with cutting grooves to cut the board into shape; the upper and lower sets of rolling cutters are close to each other, the board is fed between the two rolling cutters and is cut by the upper and lower sets of serrations, and the grooves between the serrations cut the board into the shape of bamboo strips, which is mainly used for the production of disposable chopsticks.

[0008] The groove shape includes arc or square, and 1-20 grooves are distributed side by side on the same tooth, which can cut multiple bamboo strips at one time;

[0009] Preferably, a monitoring device is symmetrically embedded in the side of the wheel ring; the monitoring device includes a screw head and a mounting rod, the screw head is located at one end of the mounting rod, and the screw head is embedded in the wheel ring during installation;

[0010] The mounting rod consists of threaded sections at both ends and a sliding section in the middle. The threaded sections are threaded, while the sliding section is not. Multiple sensors are axially distributed on the sliding section, including strain sensors, pressure sensors, temperature sensors, and acceleration sensors. A battery is placed inside the mounting rod to power the monitoring device.

[0011] Preferably, the end of the mounting cap furthest from the mounting rod has an outwardly protruding pressure-sensing plate, inside which a pressure sensor is installed. During installation, the pressure-sensing plate abuts against the inner wall of the wheel ring. The end of the mounting rod furthest from the screw head has a mounting cap, which is inserted into the inner cavity of the mounting rod. A protruding buckle is provided in the inner cavity of the mounting rod near the mounting cap, and a limiting groove is provided on the mounting cap near the protruding buckle. The protruding buckle is inserted into the limiting groove for fixation.

[0012] Preferably, an elastic support column is installed inside the mounting cap. The elastic support column abuts against the pressure-sensitive sheet outward, providing a certain buffer space for the pressure-sensitive sheet. Under the action of the elastic support column, the pressure-sensitive sheet maintains an outward thrust.

[0013] The sensor is equipped with an elastic base, which consists of a rubber pad and a spring. The elastic base provides a certain buffer space for the sensor and continuously pushes the sensor outward, so that the sensor is always in close contact with the inner wall of the wheel ring.

[0014] Preferably, a control module is installed on the mounting rod near the screw head. The control module is equipped with a wireless communication module, which monitors the tooth surface stress, vibration frequency and temperature in real time, and uses edge calculation to determine whether there are early faults such as cracks and pitting, and provides early warning of faults.

[0015] Preferably, the outermost ends of the teeth are uniformly welded with serrations to enhance the cutting effect. The tips of the serrations form sharp cutting edges, which concentrate the rotational force of the tool on a very small contact point. This allows for easy penetration of the structure of the workpiece material, reduces cutting resistance, and makes cutting more effortless and efficient.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1) The outermost end of the tooth is uniformly welded with serrations, and there are cutting grooves between adjacent serrations, which can cut the board into shape. Furthermore, the grooves on the same tooth are distributed side by side, which can cut multiple bamboo strips at once, thereby increasing the number of cuts per unit time and thus improving cutting efficiency.

[0018] 2) The teeth on the outer side of the ring are inclined spirally along the axis, which can form a spiral cutting trajectory when rotating, reducing cutting resistance and enabling rapid material cutting. After cutting, the grinding teeth on the other side of the teeth grind the cutting end face, completing the cutting and grinding operations simultaneously, further improving cutting efficiency and thus helping to increase production.

[0019] 3) Real-time data acquisition and fault identification through LSTM algorithm can provide early warning of early faults such as cracks and pitting; a three-level early warning mechanism is linked to the equipment control system to avoid sudden failures, extend tool life and reduce replacement costs. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a single cutting tool of the present invention;

[0021] Figure 2 This is a schematic diagram of the feed plane of the upper and lower sets of cutting tools in this invention;

[0022] Figure 3 This is a side view of a single cutting tool of the present invention;

[0023] Figure 4 This is a schematic diagram of the monitoring device of the present invention;

[0024] Figure 5 This is a front view of the monitoring device of the present invention;

[0025] Figure 6 This is a cross-sectional view of the monitoring device of the present invention.

[0026] In the diagram: 1. Ring, 2. Tooth, 3. Cutting tooth, 4. Grinding tooth;

[0027] 5. Monitoring device, 6. Screw head, 7. Threaded section, 8. Slide rod section, 9. Sensor, 10. Mounting cap, 11. Pressure sensing plate, 12. Battery, 13. Elastic base, 14. Elastic support column, 15. Control module, 16. Sawtooth. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and 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. Therefore, they should not be construed as limitations on this invention.

[0030] Example:

[0031] Please see Figure 1-6 The present invention provides the following technical solution:

[0032] The hobbing cutter consists of two sets of independently driven upper and lower parts. Each hobbing cutter includes a ring 1 and teeth 2. The outer side of the ring 1 has 3-18 teeth 2 evenly distributed along the axial direction. The teeth 2 are inclined at 1-30 degrees along the axis. One side of the teeth 2 is provided with cutting teeth 3, and the other side is provided with grinding teeth 4.

[0033] The outermost end of the tooth 2 is uniformly welded with serrations 16, and cutting grooves are provided between the serrations 16 to cut the plate into shape; the upper and lower sets of rolling cutters are close to each other but do not contact each other.

[0034] During cutting, both the upper and lower sets of roller cutting blades rotate in the direction of the board feeding. The board is fed between the two roller cutting blades and is cut by the upper and lower sets of saw teeth 16. The grooves between the saw teeth 16 are cut from the board to form bamboo strips, which are used for the production of disposable chopsticks.

[0035] The groove shape includes arc or square, and 1-20 grooves are arranged side by side on the same tooth 2, which can cut multiple bamboo strips at one time;

[0036] Monitoring devices 5 are symmetrically embedded in the side of the wheel ring 1; the monitoring device 5 includes a screw head 6 and a mounting rod, the screw head 6 is located at one end of the mounting rod, and the screw head 6 is embedded in the wheel ring 1 when installed;

[0037] The mounting rod includes threaded sections 7 at both ends and a sliding section 8 in the middle. The threaded sections 7 are threaded, while the sliding section 8 is not threaded.

[0038] Multiple sensors 9 are axially distributed on the slide bar section 8. The sensors 9 include strain sensors, pressure sensors, temperature sensors and acceleration sensors to monitor the operation of the tool in real time.

[0039] An installation cap 10 is provided at the end of the mounting rod away from the screw head 6. The installation cap 10 is inserted into the inner cavity of the mounting rod. A spring protrusion is provided in the inner cavity of the mounting rod near the installation cap 10. A limit groove is provided in the mounting cap 10 near the protrusion. The protrusion is inserted into the limit groove to complete the installation and fixation.

[0040] The mounting rod contains a battery 12 that powers the monitoring device 5. The battery 12 can be easily replaced by opening the mounting cap 10.

[0041] The end of the mounting cap 10 away from the mounting rod is provided with an outwardly protruding pressure-sensing plate 11. A pressure sensor is installed inside the pressure-sensing plate 11. During installation, the pressure-sensing plate 11 abuts against the inner wall of the wheel ring 1, which can detect whether the monitoring device 5 and the wheel ring 1 are installed in place.

[0042] An elastic support column 14 is installed inside the mounting cap 10. The elastic support column 14 abuts against the pressure-sensitive sheet 11 outward, providing a certain buffer space for the pressure-sensitive sheet 11. Under the action of the elastic support column 14, the pressure-sensitive sheet 11 maintains an outward thrust.

[0043] An elastic base 13 is installed on the sensor 9. The elastic base 13 consists of a rubber pad and a spring, which provides a certain buffer space for the sensor 9 and continuously pushes the sensor 9 outward so that the sensor 9 is always in close contact with the inner wall of the wheel ring 1.

[0044] A control module 15 is installed on the mounting rod near the screw head 6. The control module 15 is equipped with a wireless communication module. By real-time monitoring of tooth surface stress, vibration frequency and temperature, edge calculation is used to determine whether there are early faults such as cracks and pitting, and to provide early warning of faults.

[0045] The monitoring device 5 is used in conjunction with a monitoring system. After each usage cycle, the monitoring device 5 will summarize the data to the background, so as to keep track of the usage status of the tool in a timely manner.

[0046] Working principle:

[0047] The teeth 2 on the outer side of the ring are spirally inclined along the axis, forming a "spiral cutting trajectory" when rotating, which greatly reduces cutting resistance, can quickly cut off the material, ensure a smooth cutting surface, and reduce burrs;

[0048] After cutting, the grinding tooth 4 on the other side of the tooth follows synchronously to grind the cutting surface, achieving "one-time processing to meet the standard" without the need for secondary rework;

[0049] In addition, the outermost end of the tooth 2 is uniformly welded with serrations 16 to enhance the cutting effect;

[0050] The monitoring device 5 works in conjunction with the cloud system to build a full-link perception system "from tool status to back-end decision-making"; the sensor on the mounting rod slide section 8 is in close contact with the inner wall of the wheel ring through the elastic base 13 to ensure the accuracy of data collection;

[0051] The purpose is to monitor stress changes at the root of tooth 2. When tooth 2 shows signs of cracking, the local stress will change abruptly. For example, if the stress value suddenly increases, the abnormality can be quickly triggered by timely monitoring and setting thresholds.

[0052] In addition, the vibration frequency of the wheel ring 1 is continuously monitored. If the vibration suddenly increases, it may be due to the chipping of the tooth 2, the dynamic imbalance of the wheel ring 1, or abnormal workpiece feeding.

[0053] The pressure sensor inside the pressure-sensitive plate 11 monitors the installation tightness, and the pressure sensor in the slide section 8 monitors the contact pressure between the teeth and the workpiece to avoid overload processing;

[0054] Temperature changes in the cutting zone: When the cutting temperature exceeds 200℃, an "overheating risk" warning is issued to prevent tool coating failure and to standardize cutting processes and procedures.

[0055] The collected data is transmitted in real time to the control module 15 inside the mounting pole. The STM32L4 low-power MCU installed in the control module 15 performs preliminary filtering on the data, and then uploads the data to the cloud management platform through the LoRa wireless communication module.

[0056] In the event of a network outage, the control module's built-in 4GB Flash memory will cache 30 days of data and automatically retransmit it after the network is restored to avoid data loss.

[0057] The control module 15 integrates an LSTM long short-term memory network algorithm. By learning historical fault data, such as cracks, pitting, chipping, and excessive wear, it analyzes current data characteristics in real time, such as stress changes and abnormal vibration frequencies, to quickly identify early faults and prevent the fault from escalating.

[0058] Cloud platform: Receives real-time data from multiple cutting tools and performs global analysis: compares the operating parameters of cutting tools in the same batch and identifies individual anomalies, such as a cutting tool having a temperature 30°C higher than the average.

[0059] By combining data such as material, rotation speed, and feed rate from the machining records, the root cause of the fault can be analyzed. For example, overheating may be caused by insufficient coolant or excessive feed rate.

[0060] Generate a "Tool Health Report" to quantify the remaining tool life. If it is estimated that 500 more workpieces can be processed, the report will issue an early warning for regular tool inspection.

[0061] Depending on the severity of the fault, the system triggers a level-three alert, which is then pushed to management personnel via the industrial app / web interface:

[0062] Level 1 Warning - Minor Anomalies: Such as temperature <200℃ or slight vibration fluctuations, only an "Attention Tip" will be sent, and there is no need to shut down the system;

[0063] Level 2 Warning - Moderate Anomaly: If there is a sudden change in stress or the vibration value is close to the threshold, a "Suggested shutdown for inspection" message will be sent, along with troubleshooting steps, such as "Check coolant flow and calibrate sensors".

[0064] Level 3 Early Warning - Critical Fault: Such as tooth chipping or sudden temperature rise, immediately send a "forced shutdown" command and link the machine tool control system to suspend processing to avoid equipment damage or safety accidents;

[0065] It achieves high-precision and high-efficiency rolling cutting, and maximizes tool life and reduces production risks through real-time early warning and convenient operation and maintenance, adapting to the continuous operation requirements of automated production lines.

[0066] It should be noted that all standard parts used in this invention can be purchased from the market, and irregularly shaped parts can be customized according to the description and drawings. The specific connection methods of each part all adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The control method or control module of this invention is controlled by a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming. It should be noted that the electrical components mentioned in this invention have been sorted according to the actual situation during manufacturing, so as not to cause the wire harness to become tangled or affect the operation. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0067] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or basic characteristics. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of the invention is defined by the appended claims rather than the foregoing description. Therefore, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0068] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hobbing cutter, comprising upper and lower sets of independently driven components, each hobbing cutter including a ring (1) and teeth (2), characterized in that: The outer side of the ring (1) has 3-18 teeth (2) evenly distributed along the axial direction, and the teeth (2) are inclined at 1-30 degrees along the axis; one side of the teeth (2) is provided with cutting teeth (3), and the other side is provided with grinding teeth (4). The outermost end of the tooth (2) is uniformly welded with serrations (16), and cutting grooves are provided between the serrations (16). The upper and lower sets of rolling cutters are close to each other. The groove shape includes arc or square, and 1-20 are distributed side by side on the same tooth (2).

2. The rolling cutter according to claim 1, characterized in that: A monitoring device (5) is symmetrically embedded on the side of the ring (1); the monitoring device (5) includes a screw head (6) and a mounting rod. The screw head (6) is located at one end of the mounting rod and is embedded in the ring (1) during installation. The mounting rod includes threaded sections (7) at both ends and a sliding rod section (8) in the middle. The threaded sections (7) are threaded, while the sliding rod section (8) is not threaded. Multiple sensors (9) are axially distributed on the sliding rod section (8). The sensors (9) include strain sensors, pressure sensors, temperature sensors and acceleration sensors. A battery (12) is placed inside the mounting rod to power the monitoring device (5).

3. The rolling cutter according to claim 2, characterized in that: The end of the mounting cap (10) away from the mounting rod is provided with an outwardly protruding pressure-sensing plate (11). A pressure sensor is installed inside the pressure-sensing plate (11). During installation, the pressure-sensing plate (11) abuts against the inner wall of the wheel ring (1). The end of the mounting rod away from the screw head (6) is provided with a mounting cap (10). The mounting cap (10) is inserted into the inner cavity of the mounting rod. A protruding buckle is provided in the inner cavity of the mounting rod near the mounting cap (10). A limit groove is opened in the mounting cap (10) near the protruding buckle. The protruding buckle is inserted into the limit groove for fixation.

4. The rolling cutter according to claim 3, characterized in that: An elastic support column (14) is installed inside the mounting cap (10). The elastic support column (14) abuts against the pressure-sensitive sheet (11) outward, providing a certain buffer space for the pressure-sensitive sheet (11). Under the action of the elastic support column (14), the pressure-sensitive sheet (11) maintains an outward thrust. An elastic base (13) is installed on the sensor (9). The elastic base (13) consists of a rubber pad and a spring, which provides a certain buffer space for the sensor (9) and continuously pushes the sensor (9) outward so that the sensor (9) is always in close contact with the inner wall of the wheel ring (1).

5. The rolling cutter according to claim 4, characterized in that: A control module (15) is installed near the screw head (6) on the mounting rod. The control module (15) is equipped with a wireless communication module. By real-time monitoring of tooth surface stress, vibration frequency and temperature, edge calculation is used to determine whether there are early faults such as cracks and pitting, and to provide early warning of faults.

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