A simple thermocouple straightening device that can be expanded

Abstract

This utility model relates to the field of thermocouple technology, specifically to a simple, expandable thermocouple straightening device, comprising a straightening box and a straightening assembly. A motor is installed inside the straightening box, and the motor is connected to a drive wheel in a groove at the top of the straightening box via a V-belt. The drive wheel drives the straightening assembly via a transmission shaft. The straightening assembly is installed in a groove on the side of the drive wheel. The straightening assembly includes a straightening frame, adjusting bolts, and a floating straightening tube. This utility model, by installing the straightening assembly, achieves flexible, progressive straightening of the thermocouple wires, solving the problems of complex structure, easy damage to the wires, and inconvenient adjustment in traditional multi-roller straightening methods, thus improving straightening quality and equipment adaptability.

Description

Technical Field

[0001] This utility model relates to the field of thermocouple technology, specifically to a simple thermocouple straightening device that can be expanded. Background Technology

[0002] In the production of temperature sensors such as thermocouples and resistance temperature detectors (RTDs) and the processing of metal wires, thermocouple wires or similar metal wires are typically wound into coils during transportation and storage to save space. Before use, they need to be unwound, straightened, and cut to a fixed length to meet the requirements of subsequent precise measurement and assembly.

[0003] Existing roller-type straightening equipment is typically complex and bulky. Its rough, forceful straightening method risks damaging the surface finish of the wire and fails to completely eliminate internal stress. Furthermore, existing equipment often fails to efficiently integrate straightening, meter counting, and fixed-length cutting functions, frequently requiring manual intervention during measurement, hindering precise automated continuous production and limiting improvements in production efficiency and product quality. Therefore, we propose a compact, flexible, and easily automatable thermocouple straightening device. Utility Model Content

[0004] The purpose of this invention is to provide an expandable thermocouple simple straightening device to solve the technical problems of complex structure, hard extrusion damage and lack of automation mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a simple thermocouple straightening device that can be expanded, comprising: a straightening box and a straightening assembly, wherein a motor is installed inside the straightening box, the motor is connected to a power wheel in a groove at the top of the straightening box via a V-belt, the power wheel drives the straightening assembly via a transmission shaft, and the straightening assembly is installed in a groove on the side of the power wheel;

[0006] The straightening assembly includes: a straightening frame, adjusting bolts, and a floating straightening tube;

[0007] An adjustable bearing seat is installed on the top of the straightening box. The adjustable bearing seat is located at both ends of the straightening frame. The straightening frame is located in the groove on the side of the power wheel. The transmission shaft carried by the adjustable bearing seat is fixedly connected to both ends of the straightening frame. Adjusting bolts are installed at the other two ends of the straightening frame. A floating straightening tube is connected to the end of the adjusting bolt. The floating straightening tube is coaxial with the power wheel.

[0008] Preferably, a base plate is mounted on the top of the straightening box, and a meter counter assembly is mounted on the top of the base plate;

[0009] The meter counter assembly includes: rollers, roller meter counter, and support frame;

[0010] A pair of mounting frames are installed on the surface of the substrate. The end of the roller is placed in the recessed part of the top of the mounting frames. A support frame is installed on the surface of the substrate. The roller meter is mounted on the roller through the support frame. The roller meter is connected to the support frame through a connecting rod.

[0011] Preferably, a buffer assembly is installed on the support frame, and the buffer assembly is connected to the end connecting rod of the roller meter counter, and the buffer is achieved by a buffer spring;

[0012] The cushioning assembly includes: a U-shaped frame, a cushioning rod, and a cushioning spring;

[0013] The U-shaped frame is fixedly installed on the top of the connecting rod. A buffer rod is rotatably connected in the middle of the U-shaped frame. The buffer rod is slidably connected to the support frame. A buffer spring is fitted on the outer wall of the buffer rod.

[0014] Preferably, a material cutting component is mounted on the substrate, and the material cutting component is located behind the meter counter component;

[0015] The material cutting assembly includes: a material cutting table, a material cutting cutter head, and a cylinder;

[0016] The material cutting platform is fixedly installed at the rear of the placement frame. A cylinder is installed on the top of the material cutting platform. A slider is fixedly connected to the cylinder push rod. A material cutting cutter head is embedded at the bottom of the slider. The slider is slidably connected to the slide rails on both sides of the material cutting platform.

[0017] Preferably, the drive wheel, straightening frame, and floating straightening tube are equipped with polytetrafluoroethylene (PTFE) sleeves, which can be removed and replaced.

[0018] Preferably, the straightening box is equipped with fixed seats at the four corners of its bottom, and the fixed seats are equipped with support seats and casters at their bottoms.

[0019] Preferably, a coupling wire passes through the center of the power wheel, and the coupling wire passes through the power wheel, the straightening assembly, the meter counter assembly, and the material cutting assembly in sequence.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. This utility model achieves flexible and progressive straightening of coupled wires by installing a straightening component, which solves the problems of complex structure, easy damage to wires and inconvenient adjustment of traditional multi-roller straightening methods, and improves straightening quality and equipment adaptability;

[0022] 2. This utility model, by installing a meter counter assembly, achieves accurate measurement and monitoring of the length of the conveying twin wire, solving the problems of low efficiency and accuracy deviation caused by the need for manual measurement during machine shutdown in the traditional method, and improving the automation and accuracy of fixed-length cutting;

[0023] 3. This utility model, by installing a material cutting component, realizes the automatic cutting of the twin wires after straightening and setting the length, which solves the problems of low efficiency and uneven cuts of manual material cutting, and improves production efficiency and material quality. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the straightening component structure of this utility model;

[0026] Figure 3 This is a schematic diagram of the meter counter assembly of this utility model;

[0027] Figure 4 This is a schematic diagram of the material cutting component structure of this utility model;

[0028] Figure 5 This is a schematic diagram of the fixing base structure of this utility model.

[0029] In the diagram: 1. Straightening box; 2. Motor; 3. V-belt; 4. Groove; 5. Drive wheel; 6. Drive shaft; 7. Straightening frame; 8. Adjusting bolt; 9. Floating straightening tube; 10. Adjustable bearing seat; 11. PTFE sleeve; 12. Base plate; 13. Roller; 14. Roller meter counter; 15. Support frame; 16. Placement rack; 17. Connecting rod; 18. U-shaped frame; 19. Buffer rod; 20. Buffer spring; 21. Cutting platform; 22. Cutting cutter head; 23. Cylinder; 24. Slider; 25. Slide rail; 26. Fixed seat; 27. Support seat; 28. Universal wheel; 29. ​​Coupler wire. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model 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 utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within 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.

[0033] Please see Figure 1 and Figure 2 This utility model provides an embodiment of an expandable thermocouple simple straightening device, including a straightening box 1 and a motor 2 inside it. The motor drives a power wheel 5 through a V-belt 3. A straightening assembly is provided on the side of the power wheel 5. The straightening assembly consists of a straightening frame 7, an adjusting bolt 8, and a floating straightening tube 9. Polytetrafluoroethylene (PTFE) sleeves 11 are embedded inside the power wheel 5, the straightening frame 7, and the floating straightening tube 9. The PTFE sleeves 11 can be removed and replaced. By rotating the adjusting bolt 8, one side of the PTFE sleeve 11 inside the floating straightening tube 9 can be pressed against the thermocouple wire 29 and produce elastic deformation, thereby achieving flexible straightening of the thermocouple wire 29.

[0034] Furthermore, the straightening frame 7 is a rectangular frame structure, which is fixed to the drive shaft 6 supported by adjustable bearing seats 10 through through holes at both ends, thereby achieving synchronous rotation with the power wheel 5. Threaded through holes are machined on the other two sides of the straightening frame 7 for installing adjusting bolts 8. The adjusting bolts 8 are fine-pitch bolts with anti-loosening caps, depressing by 1mm with each rotation. Their ends connect to the outer wall of the floating straightening tube 9. The PTFE sleeve 11 is key to achieving flexible straightening and versatility. Since the wire moves in one direction, the PTFE sleeve 11 adopts a T-shaped round tube design, with its outer diameter corresponding to the power wheel 5, the inner hole of the straightening frame 7, and the floating straightening tube 9. The inner hole of the straight tube 9 is press-fitted with an interference fit. The inner diameter is made into a series of standard specifications according to the commonly used wire diameters such as 0.5mm, 1.0mm, and 1.5mm. During preparation, simply put the rubber sleeve into the tube from left to right. Under the action of friction and tension, the rubber sleeve will naturally move to the right. However, due to the step at the head, it will not fall off. The self-rotation will not affect the straightening. The structure is simple and reliable. The polytetrafluoroethylene Teflon material of the PTFE rubber sleeve 11 has a low coefficient of friction, self-lubricating properties and good elasticity. It can effectively apply pressure for straightening and protect the metallic luster of the wire surface from scratches.

[0035] During operation, the PTFE sleeve 11 of the drive wheel 5, straightening frame 7, and floating straightening tube 9 passes through the drive wheel 5, straightening frame 7, and floating straightening tube 9 in sequence. By rotating the adjusting bolt 8, the PTFE sleeve 11 is rotated and lowered until it passes horizontally through the center of the PTFE sleeve 11. After rotating 2-3 turns, it presses down about 2-3 mm to lock and cap, achieving an anti-loosening effect. For the same diameter PTFE filament in the same batch of operations, only one adjustment is needed for repeated adjustments. This pushes the PTFE sleeve 11 inside the floating straightening tube 9 to produce a slight horizontal displacement, causing the PTFE sleeve 11 to press and wrap the PTFE sleeve 11 on one side, encasing the PTFE sleeve 29 passing through it. In this state, the PTFE sleeve 11... The lateral pressure generated by the deformation of the PTFE sleeve 11 acts on the entire circumference of the PTFE wire 29, forcing the PTFE wire 29 to travel along the straight path formed by the inner hole of the PTFE sleeve 11. As the PTFE wire 29 continues to advance, the original curved part is gradually straightened by this continuous and flexible pressure. It cleverly utilizes the elasticity of the flexible material to transform the correction of the wire into a surface contact and gentle guiding process, rather than a line contact and a hard bend. This greatly eliminates the new internal stress generated by the strong bending in the traditional method, resulting in a more stable straightening effect and less impact on the physical properties of the wire.

[0036] Please see Figure 1 and Figure 3 One embodiment of this utility model is an expandable thermocouple simple calibration device, which includes a meter counter assembly mounted on a base plate 12. The meter counter assembly consists of a roller 13, a roller meter counter 14 and a support frame 15. The roller meter counter 14 is connected to the support frame 15 through a buffer assembly. The buffer assembly includes a U-shaped frame 18, a buffer rod 19 and a buffer spring 20, which are used to press the thermocouple wire and eliminate meter counting jump error.

[0037] Furthermore, the base plate 12 serves as the mounting platform for the entire metering and cutting module, and is fixed to the top of the straightening box 1 with screws. A pair of mounting brackets 16 are fixed on the base plate 12, and the U-shaped groove on its top is used to support the roller 13. The roller meter counter 14 adopts a commercially available photoelectric encoder or Hall element metering wheel, which is hinged to the support frame 15 through the connecting rod 17. Under natural conditions, under the action of gravity and spring, the metering wheel will press down, clamping the ferrule 29 together with the roller 13 below. When the ferrule is pulled, the metering wheel rolls accordingly, thereby outputting a pulse signal to calculate the length. The drawback of traditional metering devices is that if the metering wheel is pressed too tightly, it will flatten the thin and soft ferrule or cause excessive traction resistance. If it is pressed too loosely, it may cause the metering wheel to slip when the ferrule jumps slightly, resulting in counting errors. The buffer component of this utility model solves this contradiction. The U-shaped bracket 18 is fixed to the upper end of the connecting rod 17. A buffer rod 19 is hinged in the middle of the U-shaped frame 18. The other end of the buffer rod 19 passes through the through hole on the top rotating shaft of the support frame 15, forming a shaft-hole clearance fit. It has sufficient room for movement and does not contain bearings or other structures. A buffer spring 20 is fitted on the outer wall of the buffer rod 19. When the twin wire has slight vibration or uneven thickness, the buffer spring 20 absorbs these disturbances by extending and contracting between the buffer rod and the top rotating shaft of the support frame 15, allowing the measuring wheel to float up and down accordingly. The wire diameter is usually φ2-φ8mm, which is negligible for the displacement of the buffer assembly. Therefore, dynamic adjustment is not required. The elastic stroke of the buffer spring 20 itself can meet the clamping force for the normal rotation of the roller measuring device 14, and always maintain a constant and gentle pressure against the surface of the twin wire. This ensures that there is no relative slippage between the measuring wheel and the twin wire, achieving accurate measurement, and also avoids damaging the twin wire. This is a prerequisite for achieving high-precision fixed-length cutting.

[0038] Please see Figure 1 , Figure 4 and Figure 5 This utility model provides an embodiment of an expandable thermocouple simple straightening device, including a straightening box 1 and a straightening assembly. The straightening box 1 is equipped with a motor 2. The straightening assembly includes a straightening frame 7, an adjusting bolt 8, and a floating straightening tube 9. A base plate 12 is installed on the top of the straightening box 1. A meter counter assembly is installed on the top of the base plate 12. The meter counter assembly includes a roller 13, a roller meter counter 14, and a support frame 15. A cutting assembly is installed behind the meter counter assembly. The cutting assembly consists of a cutting platform 21, a cutting blade 22, and a cylinder 23. When the meter counter assembly detects that the thermocouple wire 29 has reached the set length, the control system triggers the cylinder 23 to move, pushing the slider 24 and the cutting blade 22 along the slide rail 25 to complete the automatic cutting. Fixed seats 26 are installed at the four corners of the bottom of the straightening box 1. Support seats 27 and casters 28 are installed at the bottom of the fixed seats 26.

[0039] Furthermore, the control system includes a PLC and a PC-based control system. The PLC centrally controls and receives feedback signals from various components, and the PC operates the PLC. The roller meter counter 14 outputs pulse signals, which are compared with the parameters set on the PC through PLC signal processing to achieve fixed-length feeding. The initial parameter is assumed to be 1m, and the distance from the roller meter counter 14 to the cutting head 22 is Xm (slightly adjusted according to the actual installation length). After completing the preparatory work, simply input the feeding length of 1m on the PC, and then select the start button on the front of the straightening box 1 or the start control on the PC. The wire 29 starts to pass through the roller meter counter 14. After the roller meter counter 14 outputs (1+X)m pulses, the motor 2 stops rotating, and the straightening stops. At the same time, the PLC sends a signal to the solenoid valve to control the cylinder 23 to operate, completing the cutting operation. Subsequently, only 1M pulses need to be output. Repeated operations can be achieved by punching; the cutting table 21 is a sturdy metal platform, which is fixedly connected to the base plate 12 by bolts, providing stable support for the cutting action. The cylinder 23 is preferably a small double-acting cylinder, ensuring that the stroke and thrust are sufficient to cut the wire 29 by the cutting head 22. The cylinder 23 is vertically mounted on the cutting table 21. The end of the cylinder piston rod is connected to the slider 24 by a thread. The slider 24 cooperates with two parallel slide rails 25 that have been finely ground on the cutting table 21 to ensure smooth movement without shaking. The cutting head 22 is made of high-speed tool steel such as SKD11 and heat-treated to HRC58-62 to ensure wear resistance. The clearance between the cutting head 22 and the cutting table 21 is about 0.1-0.15mm. It is embedded in the cavity at the bottom of the slider 24 to ensure tightness and easy replacement. The cutting edge is designed as a slightly angled bevel to reduce the impact force at the moment of cutting and achieve smoother shearing.

[0040] The straightening box 1 is constructed with aluminum profiles. The PLC and PC programs of the control system can be superimposed with additional equipment to realize functions. For example, if an automatic wire feeder is used, the frame can be directly extended and fixed for easy connection. In addition, the feeding end can also be expanded with receiving equipment. Similarly, after building a counting device, it can be used as a link in automated production to realize the integration of feeding-straightening-feeding-transfer process. Since the system control is adopted, the feeding quantity counting feedback can be added. When the feeding quantity reaches the set value, a signal feedback is sent to communicate with other equipment to realize the interconnection between equipment.

[0041] The user conveniently moves the device to the designated location using the casters 28, then secures it with the support base 27. The desired cutting length is set on the PC, and the speed control knob of the motor 2 is adjusted according to the wire diameter. The wire is then manually or via an extended wire feeding mechanism threaded sequentially through the power wheel 5, straightening frame 7, and floating straightening tube 9 until it reaches the position of the meter counter assembly. The adjusting bolt 8 on one side of the floating straightening tube 9 is adjusted so that the PTFE sleeve inside the floating straightening tube 7 is flush with the wire. The device is then started, and the motor 2 drives the entire system. The roller meter counter 14 measures the length of the passing wire in real time. The signal is transmitted to the PLC. When the metering value reaches the required feeding length, the PLC immediately sends a stop signal to the motor 2, and then sends an action signal to the solenoid valve of the cylinder 23. The cylinder 23 quickly pushes the cutting head 22 downward to cleanly cut the ferrule 29. After cutting, the cylinder 23 retracts, and the PLC sends a 1M pulse to restart the motor 2 and start the feeding cycle. This solves the cumbersome operation mode of traditional equipment that must be stopped, manually measured and cut, and realizes fully automatic, high-efficiency and high-precision continuous production, which greatly reduces labor costs and labor intensity.

[0042] Working principle: First, the operator or the extended wire feeding mechanism will pass the end of the coiled PTFE wire 29 through the PTFE sleeve 11 inside the power wheel 5, the PTFE sleeve 11 inside the straightening frame 7, and the PTFE sleeve 11 inside the floating straightening tube 9 in sequence, and continue to pull it through the gap between the roller 13 and the roller meter counter 14.

[0043] Next, according to the wire diameter of the duct 29, the adjusting bolt 8 is rotated to push the polytetrafluoroethylene sleeve 11 inside the floating straightening tube 9 to press the duct 29 on one side. At the same time, the position of the power wheel 5 is adjusted by the adjustable bearing seat 10 to ensure smooth wire feeding. Then, the required feeding length is set on the PC end, and the speed control knob of the motor 2 is adjusted according to the wire diameter. The equipment is started by the start button on the front of the straightening box 1 or the start control on the PC end. The motor 2 transmits power to the power wheel 5 through the V belt 3. The power wheel 5 drives the straightening frame 7 to rotate synchronously through the transmission shaft 6, thereby pulling the duct 29 to move forward continuously. During this process, the bent part of the duct 29 is gradually straightened by the continuous and flexible pressure inside the floating straightening tube 9. The smoothly moving duct 29 drives the roller meter counter 14 to rotate. The pulse signal generated is collected in real time to calculate the length passed. The vibration of the duct 29 is absorbed by the elastic pressure transmitted by the buffer spring 20 through the buffer rod 19 and the U-shaped frame 18 to ensure accurate measurement.

[0044] Finally, when the meter counter assembly detects that the conveying length has reached the set value, the control system immediately stops the motor 2 and then starts the cylinder 23. The push rod of the cylinder 23 pushes the slider 24 to descend rapidly along the slide rail 25, so that the cutting head 22 embedded on the slider 24 completes the cutting operation on the cutting table 21. After cutting, the cylinder 23 retracts, and the control system automatically restarts the straightening process, thereby achieving efficient and high-precision automated fixed-length straightening and feeding.

[0045] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A simple, expandable thermocouple calibration device, characterized in that: The device includes a straightening box (1) and a straightening assembly. A motor (2) is installed inside the straightening box (1). The motor (2) is connected to a drive wheel (5) in a groove (4) at the top of the straightening box (1) via a V-belt (3). The drive wheel (5) drives the straightening assembly via a drive shaft (6). The straightening assembly is installed in the groove (4) on the side of the drive wheel (5). The straightening assembly includes: a straightening frame (7), adjusting bolts (8), and a floating straightening tube (9); The top of the straightening box (1) is equipped with an adjustable bearing seat (10), which is located at both ends of the straightening frame (7). The straightening frame (7) is located in the side groove (4) of the power wheel (5). The transmission shaft (6) carried by the adjustable bearing seat (10) is fixedly connected to both ends of the straightening frame (7). Adjusting bolts (8) are installed at the other two ends of the straightening frame (7). The end of the adjusting bolt (8) is connected to a floating straightening tube (9), which is coaxial with the power wheel (5).

2. The expandable thermocouple simple calibration device according to claim 1, characterized in that: The top of the straightening box (1) is equipped with a base plate (12), and the top of the base plate (12) is equipped with a meter counter assembly; The meter counter assembly includes: a roller (13), a roller meter counter (14), and a support frame (15); A pair of placement racks (16) are mounted on the surface of the substrate (12). The end of the roller (13) is placed in the recessed part at the top of the placement rack (16). A support frame (15) is mounted on the surface of the substrate (12). The roller meter counter (14) is mounted above the roller (13) through the support frame (15). The roller meter counter (14) and the support frame (15) are connected by a connecting rod (17).

3. The expandable thermocouple simple calibration device according to claim 2, characterized in that: A buffer assembly is installed on the support frame (15). The buffer assembly is connected to the end link (17) of the roller meter counter (14) and the buffer is achieved by the buffer spring (20). The cushioning assembly includes: a U-shaped frame (18), a cushioning rod (19), and a cushioning spring (20); The U-shaped frame (18) is fixedly installed on the top of the connecting rod (17). A buffer rod (19) is rotatably connected in the middle of the U-shaped frame (18). The buffer rod (19) is slidably connected to the support frame (15). A buffer spring (20) is fitted on the outer wall of the buffer rod (19).

4. The expandable thermocouple simple calibration device according to claim 2, characterized in that: A material cutting component is mounted on the substrate (12), and the material cutting component is located behind the meter counter component; The material cutting assembly includes: a material cutting table (21), a material cutting cutter head (22), and a cylinder (23); The cutting platform (21) is fixedly installed behind the placement frame (16). A cylinder (23) is installed on the top of the cutting platform (21). A slider (24) is fixedly connected to the push rod of the cylinder (23). A cutting blade (22) is embedded at the bottom of the slider (24). The slider (24) is slidably connected to the slide rails (25) on both sides of the cutting platform (21).

5. The expandable thermocouple simple calibration device according to claim 1, characterized in that: The power wheel (5), the straightening frame (7) and the floating straightening tube (9) are equipped with polytetrafluoroethylene (PTFE) sleeves (11), which can be removed and replaced.

6. The expandable thermocouple simple calibration device according to claim 1, characterized in that: The straightening box (1) has fixed seats (26) installed at the four corners of its bottom, and a support seat (27) and casters (28) are installed at the bottom of the fixed seats (26).

7. The expandable thermocouple simple calibration device according to claim 1, characterized in that: The power wheel (5) passes through the middle of the ferrule (29), and the ferrule (29) passes through the power wheel (5), the straightening assembly, the meter counter assembly and the material cutting assembly in sequence.

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