Cutting-off equipment for bolt production and machining

Abstract

The invention relates to the technical field of cutting devices, and discloses cutting equipment for bolt production and machining, which comprises a cutting tool assembly and a tool front centering conveying assembly arranged on the front side of the cutting tool assembly, and the cutting end of the cutting tool assembly is perpendicular to a first direction. The cutting-off device is used for cutting off a to-be-cut bar conveyed in the first direction. The cutter front centering conveying assembly comprises two roller sets which are sequentially arranged in the first direction, each roller set comprises two parallel centering rollers, and the axis of the centering roller of one roller set is perpendicular to the axis of the centering roller of the other roller set and is perpendicular to the first direction; the four centering rollers jointly define a centering conveying space allowing a to-be-cut bar to pass in the first direction. According to the cutting-off equipment for bolt production and machining, the universality and adaptability of centering and locking during continuous feeding are improved, then the stability of bars in the cutting process is guaranteed, and the machining consistency of cutting machining is improved.

Description

Technical Field

[0001] This invention relates to the field of cutting device technology, and more specifically to a cutting device for bolt production and processing. Background Technology

[0002] Bolts, as important basic mechanical components, are widely used in various mechanical equipment and structures. In the automated production process of bolts, the cutting and blanking of materials is the first key process. The cutting accuracy directly affects the processing quality of subsequent cold heading, thread rolling and other processes, as well as the dimensional consistency of the final product.

[0003] In existing bolt production bar cutting equipment, especially when using disc-type cutting blades, the disc-type cutting blades apply pressure when pressing against the material, along with the shearing force during cutting. To ensure the stability and positioning accuracy of the material during cutting, a centering mechanism is installed in front of the cutting station to clamp and limit the wire or bar stock at a fixed center. In existing solutions, a common method is to use a three-jaw clamp to center and fix the bar stock. Although this type of structure can achieve a good centering effect, it requires centering and fixing the bar stock before cutting. After cutting, the jaws are released so that the feeding equipment can continuously push the bar stock to the cutting station, and then it is re-centered and locked. To perform the next cut, the three-jaw chuck needs to repeatedly perform centering, locking, and releasing actions during use. The feeding and locking actions alternate, making it difficult to adapt to the continuous cutting requirements under continuous feeding conditions, thus affecting the overall production cycle and cutting efficiency. A V-block centering mechanism can also be used as the centering mechanism in front of the cutting blade. The V-block centering mechanism has a good centering effect and is widely used. This mechanism usually includes a first V-block and a second V-block that are set opposite each other. The two have opposite V-shaped slopes. The V-blocks are driven by a drive device to move towards each other. By utilizing the centering characteristics of the V-shaped surface, the cylindrical bar is automatically centered and fixed to withstand the cutting force brought by the cutting blade.

[0004] Existing V-block centering mechanisms have limited application scope and poor adaptability in practical applications. Specifically, the V-groove opening size and included angle of traditional V-blocks are usually fixed, and their effective centering diameter range is strictly limited to a small range. When production tasks require switching between bolt products of different specifications, the original V-blocks often cannot provide effective centering and clamping, and may even cause material shaking or inaccurate positioning due to mismatched V-groove opening angles. Specifically, when the diameter of the bar stock requiring centering decreases, the V-blocks cannot abut against each other to achieve stable contact with the relatively small diameter bar stock, and when centering and locking the relatively large diameter bar stock... When the V-block's edge contacts the surface of the bar stock, rather than the V-block's inclined surface, the contact area with the bar stock is relatively narrow, resulting in relatively poor stability of centering and locking. When tangential forces and vibrations generated during cutting are applied, the bar stock is prone to detaching from the V-block or developing scratches on its surface. Furthermore, the bar stock is also scratched during transport. Therefore, existing cutting equipment either struggles to balance continuous feeding and continuous cutting, or struggles to maintain stable centering and locking for bar stock of various specifications. This leads to problems such as insufficient support, inaccurate positioning, and surface wear during the cutting process, resulting in poor stability and processing consistency during the cutting process. Summary of the Invention

[0005] The purpose of this invention is to provide a cutting device for bolt production and processing, which improves the versatility and adaptability of centering and locking during continuous feeding, thereby ensuring the stability of the bar stock during the cutting process and improving the consistency of the cutting process.

[0006] To achieve the above objectives, the present invention provides the following technical solution: Design a cutting device for bolt production and processing, including a cutting tool assembly and a front centering conveying assembly disposed in front of the cutting tool assembly, wherein the cutting end of the cutting tool assembly is perpendicular to a first direction and is used to cut the bar stock to be cut conveyed along the first direction; The pre-cutting centering conveying assembly includes two roller groups arranged sequentially along a first direction. Each roller group includes two parallel centering rollers. The centering roller axis of one roller group is perpendicular to the centering roller axis of the other roller group, and both are perpendicular to the first direction. The four centering rollers are arranged together to form a centering conveying space for the bar to be cut to pass through in a first direction, and the roller surface of each centering roller is used to contact the outer surface of the bar to be cut. The centering rollers are at least partially elastic.

[0007] Optionally, the centering roller includes a roller core, an elastic buffer layer disposed on the outer circular surface of the roller core, and a working layer disposed on the outer circular surface of the elastic buffer layer. The roller core is used to provide rotational support, and the working layer is used to contact the outer surface of the bar stock to be cut.

[0008] Optionally, the pre-cutting centering conveyor assembly further includes a carrying mechanism, which includes a carrying plate and a fixing ear. The surface of the carrying plate is provided with a clearance opening along a first direction for the bar to be cut to pass through. The fixing ear is disposed on the surface of the carrying plate and located outside the clearance opening. The number of fixing ears corresponds to the number of centering rollers. The end of the roller core is rotatably connected to the fixing ear.

[0009] Optionally, the bearing mechanism further includes a support sleeve, the surface of which has a through hole extending in a first direction, and the support sleeve is fitted onto the outer circumference of the bearing disk through the through hole.

[0010] Optionally, the tool pre-centering conveying assembly further includes a rotary mechanism, the drive end of which is used to drive the bearing disk to rotate along the axis of the first direction, and the working layer is a wear-resistant ceramic layer.

[0011] Optionally, the rotary mechanism includes a first driving member and a crank-rocker member, wherein the power input end of the crank-rocker member is fixedly connected to the driving end of the first driving member, and the power output end of the crank-rocker member is connected to the bearing plate.

[0012] Optionally, the rotary mechanism includes a second driving member and a worm gear member. The power input end of the worm gear member is fixedly connected to the driving end of the second driving member, and the power output end of the worm gear member is connected to the bearing disk, for driving the bearing disk to rotate along the axis of the first direction.

[0013] Optionally, the cutting tool assembly includes a disc cutting blade and a drive mechanism, wherein the disc cutting blade is fixedly connected to the output end of the drive mechanism along a first direction; The disc cutting blade is provided with a first position and a second position. The output end of the drive mechanism is used to control the disc cutting blade to rotate while switching between the first position and the second position. When the disc cutting blade is in the first position, it does not coincide with the projection of the bar to be cut along the first direction. When the disc cutting blade is in the second position, it at least partially coincides with the projection of the bar to be cut along the first direction.

[0014] Optionally, the drive mechanism includes a swing arm, a fixed part, and a rotating part. One end of the swing arm is rotatably connected to the fixed part, the fixed end of the rotating part is disposed at the other end of the swing arm, and the disc-shaped cutting blade is fixedly connected to the rotating end of the rotating part.

[0015] Optionally, it also includes a feeding cylinder, which extends along a first direction and has a feeding hole on its end face along the first direction, the center of which coincides with the axis of the bearing disk along the first direction.

[0016] This invention provides a cutting device for bolt production and processing, which has the following advantages: This bolt manufacturing and cutting equipment features a pre-cutting centering and conveying assembly consisting of two roller groups positioned in front of the cutting tool assembly. The centering roller axis of one roller group is perpendicular to the axis of the other, ensuring that the bar stock is effectively supported and centered in two perpendicular directions before cutting. This provides effective centering and clamping, significantly improving the positioning stability of the bar stock before cutting, reducing swaying and deviation during the cutting process, and increasing cutting accuracy. Furthermore, the four centering rollers together form a centering and conveying space for the bar stock. The centering rollers contact the outer surface of the bar stock (the one to be cut) through their roller surfaces, achieving stable centering and locking while simultaneously... As the bar stock rotates during transport, it is more conducive to adapting to continuous feeding processes, avoiding the impact of repeated opening and closing of traditional clamps on continuous cutting efficiency. Furthermore, the centering roller is at least partially an elastomer, which can improve the fit and buffering between the centering roller and the bar stock, effectively reducing the risk of wear (scratches) or crushing on the bar stock surface, and enhancing the adaptability and compensation capability for bars of different specifications (i.e., continuous bars of different diameters). In other words, when facing bars of different specifications, it can maintain a stable support and limiting effect, avoiding the difficulty of stable centering and locking of small-diameter bars or the decrease in stability due to the narrow contact area of ​​large-diameter bars, thereby improving the versatility and adaptability of centering and locking. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the cutting equipment for bolt production and processing in this invention; Figure 2 This is a front view schematic diagram of the rotary mechanism in Embodiment 1 of the present invention; Figure 3 This is a three-dimensional structural diagram of the rotary mechanism in Embodiment 2 of the present invention; Figure 4 This is a schematic diagram of the installation structure of the rotary mechanism in Embodiment 2 of the present invention; Figure 5 This is a cross-sectional view of the centering roller in this invention.

[0018] In the diagram: 10. Cutting tool assembly; 11. Disc cutting blade; 12. Drive mechanism; 121. Swing arm; 122. Rotary component; 20. Pre-cutting centering conveyor assembly; 21. Roller group; 211. Centering roller; 2111. Roller core; 2112. Elastic buffer layer; 2113. Working layer; 23. Bearing mechanism; 231. Bearing disc; 232. Fixing lug; 233. Support sleeve; 24. Rotary mechanism; 241. First drive component; 242. Crank rocker component; 243. Second drive component; 244. Worm gear component; 30. Feed cylinder. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1 to 5 The present invention provides a technical solution: a metal bar cutting device that can reduce the efficiency problem between centering and locking and continuous conveying and cutting, while also improving the adaptability of continuous centering and locking, expanding the scope of application, and providing protection through elastic compensation.

[0021] Example 1: Please see Figure 2 and Figure 5 The present invention provides a technical solution: a cutting device for bolt production and processing, including a cutting tool assembly 10 and a cutting tool centering and conveying assembly 20 disposed in front of the cutting tool assembly 10. The cutting end of the cutting tool assembly 10 is perpendicular to a first direction and is used to cut the bar material to be cut conveyed along the first direction. The pre-cutting centering conveyor assembly 20 includes two roller groups 21 arranged sequentially along a first direction. Each roller group 21 includes two parallel centering rollers 211. The axis of the centering roller 211 of one roller group 21 is perpendicular to the axis of the centering roller 211 of the other roller group 21, and both are perpendicular to the first direction. Four centering rollers 211 are arranged together to form a centering conveying space for the bar to be cut to pass through in the first direction, and the roller surface of each centering roller 211 is used to contact the outer surface of the bar to be cut. The centering roller 211 is at least partially an elastic body. The cutting tool assembly 10 is located downstream, with its cutting end perpendicular to the first direction. It is used to perform transverse cutting on the bar after it is conveyed to the predetermined cutting station along the first direction. The front centering and conveying assembly 20 is located in front of the cutting tool assembly 10, that is, on the path before the bar enters the cutting station. Its function is not simply to convey, but to center, limit and guide the bar before it reaches the cutting position, so that the bar enters the cutting area in a more stable posture. This forms a continuous centering and conveying process before cutting, improving the stability of the bar at the end of the conveying process, especially near the cutting position. Both roller groups 21 include two parallel centering rollers 211, and the axis of the centering roller 211 of one roller group 21 is perpendicular to the axis of the centering roller 211 of the other roller group 21. Both are also perpendicular to the first direction. Therefore, the four centering rollers 211 are not repeatedly arranged in the same direction, but form a composite support for the outer periphery of the bar stock from two intersecting transverse directions. The four centering rollers 211 together form a centering conveying space for the bar stock to be cut to pass through, so that when the bar stock moves along the first direction, its outer surface can simultaneously or alternately contact the roller surfaces in different directions, thereby obtaining constraint and guidance in two mutually perpendicular directions, reducing the swaying, wobble and positioning deviation of the bar stock before conveying and cutting. In this design, the roller surfaces of each centering roller 211 are in contact with the outer surface of the bar stock, rather than in a rigid block contact. This not only facilitates the smooth passage of the bar stock along the first direction, but also helps to reduce conveying resistance while maintaining the centering effect. It also avoids scratches caused by rigid contact. Furthermore, at least part of the centering roller 211 is an elastic body, which allows the centering roller 211 to produce a certain elastic fit and buffering effect when in contact with the bar stock. On the one hand, this can improve the adaptability to bars of different diameters or bars with slight dimensional fluctuations. On the other hand, it can also reduce local contact stress and reduce the risk of pressure, scratches or wear on the surface of the bar stock during the centering and conveying process, thereby taking into account centering accuracy, conveying stability and workpiece surface protection.

[0022] By setting a pre-cutting centering conveyor assembly 20 consisting of two roller groups 21 on the front side of the cutting tool assembly 10, with the axis of the centering roller 211 of one roller group 21 perpendicular to the axis of the centering roller 211 of the other roller group 21, the bar stock to be cut can be limited and supported in two mutually perpendicular directions before cutting, achieving effective centering and clamping. This effectively improves the positioning stability of the bar stock before cutting, reduces the swaying and deviation of the bar stock during cutting, and improves the cutting accuracy. Furthermore, the four centering rollers 211 together form a centering conveyor space for the bar stock to pass through. The centering rollers 211 contact the outer surface of the bar stock (the bar stock to be cut) through their roller surfaces, achieving stable centering and locking while the centering rollers 211... 11 can rotate with the conveying of the bar stock, which is more conducive to adapting to the continuous feeding process and avoids the impact of repeated opening and closing of traditional clamps on the continuous cutting efficiency. Furthermore, the centering roller 211 is at least partially an elastomer, which can improve the fit and buffering between the centering roller 211 and the bar stock, effectively reduce the risk of wear (scratches) or crushing on the surface of the bar stock, and improve the adaptability and compensation capability for bars of different specifications (i.e., continuous bars of different diameters). That is, when facing bars of different specifications, it can maintain a stable support and limiting effect, avoid the difficulty of stable centering and locking of small diameter bars or the decrease in stability due to the narrow contact area of ​​large diameter bars, so as to improve the versatility and adaptability of centering and locking.

[0023] More specifically, during cutting, the cross-section formed by the centering roller 211 in one roller group 21 and the centering roller 211 in another roller group 21 supports the bar to be cut. This allows the bar to be cut to be simultaneously subjected to lateral constraints from two mutually perpendicular directions under the action of the cutting tool, thus providing stable support for the bar near the cutting area. This allows the bar to be cut to be simultaneously subjected to support components from two mutually perpendicular directions at the moment of cutting, thereby improving the lateral stability of the bar near the cutting area and reducing the swaying and displacement of the bar caused by tangential force, impact force or vibration force when the cutting tool enters. Since the cross-support part is closer to the composite force position on the outer periphery of the bar, it can also disperse the cutting load in different directions, avoiding a single support point from continuously bearing a large load, and effectively improving the support stability.

[0024] In this embodiment, as a preferred embodiment, the centering roller 211 includes a roller core 2111, an elastic buffer layer 2112 disposed on the outer circular surface of the roller core 2111, and a working layer 2113 disposed on the outer circular surface of the elastic buffer layer 2112. The roller core 2111 provides rotational support, and the working layer 2113 contacts the outer surface of the bar stock to be cut. The roller core 2111, the elastic buffer layer 2112, and the working layer 2113 form a composite structure of the centering roller 211. The roller core 2111 ensures the dimensional and positional stability of the centering roller 2111 during long-term operation and can be made of known metal materials, specifically 45 steel or bearing steel. The elastic buffer layer 2112 reduces contact impact and improves fit, and also plays a compensating role. Specifically, when in contact with a bar stock with a relatively large diameter, it reduces contact impact and improves fit, and also plays a compensating role. The elastic buffer layer 2112 is used for relative contraction or bending, thereby achieving a compensation effect. Specifically, the elastic buffer layer 2112 can be made of polyurethane elastomer or nitrile rubber. The working layer 2113 directly supports and contacts the bar stock to be cut. It can be made of wear-resistant polyurethane layer or wear-resistant ceramic layer. The wear-resistant ceramic layer can be at least one of alumina layer, zirconium oxide layer, silicon carbide layer, and silicon nitride layer. Here, the layer refers to an annular sleeve structure. Therefore, the structure of the centering roller 211 not only helps to improve the centering stability of the bar stock before conveying and cutting, but also reduces the pressure, scratches and local wear on the surface of the bar stock during the contact process. At the same time, it also helps to reduce the local fatigue and wear of the centering roller 211 itself, and improve the overall service life and operational reliability.

[0025] In this embodiment, as a preferred option, the pre-cutting centering conveying assembly 20 further includes a carrying mechanism 23. The carrying mechanism 23 includes a carrying plate 231 and a fixing ear 232. The surface of the carrying plate 231 is provided with a clearance opening along the first direction for the bar to be cut to pass through. The fixing ear 232 is disposed on the surface of the carrying plate 231 and located outside the clearance opening. The number of fixing ears 232 corresponds to the number of centering rollers 211. The end of the roller core 2111 is rotatably connected to the fixing ear 232. By providing a clearance opening along the first direction on the surface of the bearing plate 231 for the bar to be cut to pass through, the bar to be cut can pass through the area where the bearing plate 231 is located when it is conveyed along the first direction, thereby avoiding the bearing plate 231 body from blocking the conveying path of the bar to be cut, and providing a spatial basis for the centering rollers 211 to be arranged around the bar to be cut. By setting the fixed ears 232 on the surface of the bearing plate 231 and located around the clearance opening, the fixed ears 232 can be distributed around the clearance opening so that each fixed ear 232 can be installed and supported in relation to each centering roller 211. This allows multiple centering rollers 211 to form a centering conveying space around the clearance opening for the bar to be cut to pass through, so that the outer periphery of the bar to be cut can be centered, limited, and guided when it passes through the clearance opening. The end of the roller core 2111 is rotatably connected to the fixed ears 232 and can rotate relative to the fixed ears 232. In this way, when the bar to be cut is conveyed along the first direction, each centering roller 211 can contact the outer surface of the bar through the rolling of the roller surface, thereby reducing sliding friction and improving the smoothness of conveying.

[0026] In this embodiment, as a preferred solution, the bearing mechanism 23 further includes a support sleeve 233. The surface of the support sleeve 233 is provided with a through hole extending in the first direction. The support sleeve 233 is sleeved on the outer circular surface of the bearing disk 231 through the through hole. By providing a through hole extending in the first direction on the surface of the support sleeve 233, the support sleeve 233 can form a clearance space in the first direction during assembly, so as to fit and cooperate with the outer circular surface of the bearing plate 231. Thus, the support sleeve 233 provides additional support and limit in the first direction to the outer periphery of the bearing plate 231, and allows the bearing plate 231 to rotate within the support sleeve 233.

[0027] In this embodiment, as a preferred option, the tool pre-centering conveying assembly 20 further includes a rotary mechanism 24. The driving end of the rotary mechanism 24 is used to drive the bearing disk 231 to rotate along the axis of the first direction, and the working layer 2113 is a wear-resistant ceramic layer. The drive end of the rotary mechanism 24 drives the carrier disk 231 to rotate along the axis of the first direction, enabling the carrier disk 231 to rotate as a whole around the first direction. This causes the fixed ears 232 and each centering roller 211 on the carrier disk 231 to change their circumferential positions synchronously relative to the first direction. Since each centering roller 211 is mounted on the carrier disk 231, the rotation of the carrier disk 231 causes multiple centering rollers 211 to rotate as a whole around the conveying path of the bar to be cut. In this way, when the bar to be cut is conveyed along the first direction, each centering roller 211 can not only roll and contact the outer surface of the bar to be cut through the roller surface, but also, due to the rotation of the carrier disk 231, each centering roller 211 can play a grinding role on the outer surface of the bar to be cut, assisting in the grinding of the bar to be cut, reducing subsequent grinding steps, improving the integration of functions, and reducing processing steps. Furthermore, under the rotation of the bearing plate 231, the support position of each centering roller 211 relative to the bar to be cut is periodically adjusted, so that the originally fixed contact position and force direction change. This helps to avoid only a local centering roller 211 being in the main stress state for a long time, reducing the problems of local continuous load, wear concentration and fatigue accumulation, and improving the balance of force distribution of each centering roller 211 and the overall service life of the pre-cutting centering conveyor assembly 20. By making the working layer 2113 a wear-resistant ceramic layer, the outermost part of the centering roller 211 that directly contacts the bar to be cut has high surface hardness, wear resistance and scratch resistance. Furthermore, the wear-resistant ceramic layer of the working layer 2113 not only improves the service life of the centering roller 211, but also can be used in the process of grinding the bar to be cut, thereby improving the stability of the working layer 2113 in the long-term rolling contact, centering guidance and rotational friction process. More specifically, by periodically adjusting the position of the centering roller 211, the centering roller 211 can be alternately subjected to the tangential force and pressure applied by the cutting blade.

[0028] Since the rotating mechanism 24 drives the bearing disk 231 and each centering roller 211 to rotate as a whole in the first direction, the working layer 2113 not only undertakes the conventional guiding contact function when it is in continuous contact with the bar to be cut, but also periodically contacts the outer surface of the bar to be cut at different circumferential positions, thereby playing a grinding role on the outer surface of the bar to be cut. Therefore, using a wear-resistant ceramic layer as the working layer 2113 can better withstand this repeated contact and friction, reduce local wear, indentation and performance degradation on the surface of the working layer 2113, and help maintain the shape stability and contact accuracy of the outer surface of the working layer 2113.

[0029] In this embodiment, as a preferred option, the rotary mechanism 24 includes a first driving member 241 and a crank-rocker member 242. The power input end of the crank-rocker member 242 is fixedly connected to the driving end of the first driving member 241, and the power output end of the crank-rocker member 242 is connected to the bearing plate 231. The first driving component 241 can be a drive motor or a stepper motor, which is existing known technology and is only referenced here. The driving force output by the first driving component 241 is transmitted to the crank-rocker component 242. The first driving component 241 is mainly used to output the initial power, while the crank-rocker component 242 serves as a motion transmission and motion conversion component located between the first driving component 241 and the support plate 231, further transmitting the driving action of the first driving component 241 to the support plate 231. This is achieved by fixing the power input end of the crank-rocker component 242 to the driving end of the first driving component 241. The power output end of the crank-rocker assembly 242 is connected to the bearing disk 231. The crank-rocker assembly 242 can be a disk fixedly connected to the driving end of the first driving member 241 and a connecting rod eccentrically rotatably connected to the surface of the disk. The end of the connecting rod away from the disk is rotatably connected to the surface of the bearing disk 231. This is existing known technology and is only cited here without further elaboration. Its purpose is to enable the crank-rocker assembly 242 to apply power to the bearing disk 231 after receiving the power output from the first driving member 241, so as to drive the bearing disk 231 to reciprocate along the axis of the first direction. Due to the mounting position of the bearing disk 231 and the multiple centering rollers 211... Since the bearing disk 231 is rotated under the drive of the crank rocker 242, it can further drive the multiple centering rollers 211 to change their circumferential position relative to the bar to be cut, thereby realizing the periodic adjustment of the support orientation of the centering rollers 211. Compared with the method of the first driving member 241 directly driving the bearing disk 231, by setting the crank rocker 242 as an intermediate transmission mechanism, it is not only beneficial to adjust the positional relationship between the power input end and the bearing disk 231 according to the structural layout requirements, but also makes the rotation process of the bearing disk 231 more suitable for the working requirements of the pre-cutting centering and conveying assembly 20 (i.e., to play a role in avoiding the bar to be cut).

[0030] In this embodiment, as a preferred solution, the cutting tool assembly 10 includes a disc cutting blade 11 and a driving mechanism 12, wherein the disc cutting blade 11 is fixedly connected to the output end of the driving mechanism 12 along a first direction; The disc cutting blade 11 is provided with a first position and a second position. The output end of the drive mechanism 12 is used to control the disc cutting blade 11 to rotate while switching between the first position and the second position. When the disc cutting blade 11 is in the first position, it does not coincide with the projection of the bar to be cut along the first direction. When the disc cutting blade 11 is in the second position, it at least partially coincides with the projection of the bar to be cut along the first direction. By fixing the disc cutting blade 11 to the output end of the drive mechanism 12 along the first direction, the driving force output by the drive mechanism 12 can be directly transmitted to the disc cutting blade 11, thereby driving the disc cutting blade 11 to rotate, providing cutting power for cutting the bar material to be cut. This allows the disc cutting blade 11 to cut the bar material in a rotary cutting manner. It also allows the disc cutting blade 11 to maintain a stable relative position relationship with the drive mechanism 12, so that when the drive mechanism 12 is activated, the disc cutting blade 11 can not only rotate stably, but also move synchronously with the output end of the drive mechanism 12 in space, thereby realizing the control of the cutting action and feed position of the disc cutting blade 11. The disc cutting blade 11 is configured with a first position and a second position, enabling it to perform feed and retraction actions relative to the bar stock while maintaining a rotary cutting state. When the disc cutting blade 11 is in the first position, its projection along the first direction does not coincide with the projection of the bar stock. In this case, the disc cutting blade 11 avoids the transport path of the bar stock, thus avoiding interference with the transport of the bar stock along the first direction and facilitating continuous feeding of the bar stock into the cutting station. When the disc cutting blade 11 is in the second position, it at least partially coincides with the projection of the bar stock along the first direction, indicating that the disc cutting blade 11 has entered the cutting area of ​​the bar stock. That is, the second position is the position where the disc cutting blade 11 cuts the bar stock. The drive mechanism 12 controls the rotation and position switching of the disc cutting blade 11 simultaneously, allowing the disc cutting blade 11 to switch between an avoidance state in the non-cutting stage and a cutting state in the cutting stage.

[0031] In this embodiment, as a preferred option, the drive mechanism 12 includes a swing arm 121, a fixed part and a rotating part 122. One end of the swing arm 121 is rotatably connected to the fixed part, the fixed end of the rotating part 122 is disposed at the other end of the swing arm 121, and the disc-shaped cutting blade 11 is fixedly connected to the rotating end of the rotating part 122. By rotatably connecting one end of the swing arm 121 to the fixed part, the swing arm 121 can swing relative to the fixed part. That is, the fixed part provides the mounting fulcrum and swing support base for the swing arm 121. The fixed part can be a fixed plate or a fixed rod. One end of the swing arm 121 is rotatably connected to one end of the fixed part. In other words, the fixed part is mainly used to fix the position of the swing arm 121 and provide rotational support. The swing arm 121 serves as an intermediate load-bearing component connecting the fixed part and the rotating part 122. Based on the fulcrum provided by the fixed part, it drives the rotating part 122 to change its spatial position as a whole. This is a well-known technology and will not be described in detail here. By setting the fixed end of the rotating part 122 at the other end of the swing arm 121, the rotating part 122 can move synchronously with the swing of the swing arm 121. Thus, the disc cutting blade 11 set on the rotating part 122 can not only obtain the power base required for rotary cutting, but also switch positions with the swing arm 121 relative to the fixed part.

[0032] The rotating component 122 can be a stepper motor or a drive motor, both of which are existing technologies and are only referenced here for the purpose of controlling the rotation of the disc cutting blade 11; Furthermore, when the swing arm 121 swings around the fixed part, it can also drive the disc cutting blade 11 to swing synchronously in space, so that the disc cutting blade 11 switches between the first position and the second position.

[0033] In this embodiment, as a preferred option, it also includes a feeding cylinder 30, which extends along a first direction and has a feeding hole on its end face along the first direction. The center of the feeding hole coincides with the axis of the bearing disk 231 along the first direction. By having the extension direction of the feeding cylinder 30 correspond to the conveying direction of the bar stock to be cut, the feeding cylinder 30 can receive the material cut along the first direction and provide a channel for the cut material to be discharged or fall along the first direction. That is, the other end of the feeding cylinder 30 can be connected to the next processing equipment after the bar stock is cut. The feeding cylinder 30 is mainly used to receive the material after cutting, and the feeding hole is mainly used to provide a passage for the cut material to enter the interior of the feeding cylinder 30, thereby avoiding the disorderly scattering of the cut material near the cutting area, which is conducive to improving the continuity of the feeding process and the cleanliness of the working area of ​​the whole machine.

[0034] Example 2: Please see Figure 1 , Figure 3 and Figure 4Based on Embodiment 1, except for the rotary mechanism 24, the structure is the same as that in Embodiment 1. The rotary mechanism 24 includes a second driving member 243 and a worm gear member 244. The power input end of the worm gear member 244 is fixedly connected to the driving end of the second driving member 243, and the power output end of the worm gear member 244 is connected to the bearing disk 231 for driving the bearing disk 231 to rotate along the axis of the first direction. By fixing the power input end of the worm gear assembly 244 to the drive end of the second drive member 243, the driving force output by the second drive member 243 can be stably transmitted to the worm gear assembly 244, thereby providing continuous power input to the worm gear assembly 244 by the second drive member 243. The worm gear assembly 244 is prior art and is only referenced here. The worm gear assembly 244 may include a worm wheel and a worm, wherein one end of the worm is fixedly connected to the drive end of the second drive member 243, and the worm wheel is fixedly connected to the surface of the bearing disk 231, and the outer surface of the worm wheel meshes with the threaded part of the worm. This is prior art. The second drive member 243 is mainly used to provide active driving force and can be a drive motor or a stepper motor, both of which are prior art. The worm wheel and worm are used to power the second drive member 243. The motion output from 243 is transmitted and converted. By fixing the power input end of the worm gear 244 to the drive end of the second drive 243, the transmission process has a good deceleration and torque amplification capability. Therefore, when the output speed of the second drive 243 is high and the rotation speed requirement of the bearing disk 231 is low (i.e., the relative position of the centering roller 211 needs to be adjusted), the output speed can also be adjusted by the worm gear 244, and the output torque when driving the bearing disk 231 to rotate can be increased to meet the driving requirements when the bearing disk 231 and multiple centering rollers 211 rotate as a whole (i.e., to overcome the friction between the centering roller 211 and the bar stock). This is conducive to improving the stability of the rotation control of the bearing disk 231 and the overall reliability of the pre-cutter centering conveyor assembly 20.

[0035] The first direction does not refer to a single orientation. In other words, the first direction refers to the north-south orientation. Both north and south are considered the first direction. It can be understood according to the context, and can refer to a single orientation or both directions.

[0036] 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 cutting device for bolt production and processing, characterized in that: It includes a cutting tool assembly (10) and a front centering conveying assembly (20) disposed in front of the cutting tool assembly (10). The cutting end of the cutting tool assembly (10) is perpendicular to the first direction and is used to cut the bar material to be cut conveyed along the first direction. The pre-cutting centering conveying assembly (20) includes two roller groups (21) arranged sequentially along a first direction. Each of the two roller groups (21) includes two parallel centering rollers (211). The axis of the centering roller (211) of one roller group (21) is perpendicular to the axis of the centering roller (211) of the other roller group (21), and both are perpendicular to the first direction. The four centering rollers (211) together form a centering conveying space for the bar to be cut to pass through in the first direction, and the roller surface of each centering roller (211) is used to contact the outer surface of the bar to be cut. The centering roller (211) is at least partially an elastic body.

2. The bolt cutting equipment according to claim 1, characterized in that: The centering roller (211) includes a roller core (2111), an elastic buffer layer (2112) disposed on the outer circular surface of the roller core (2111), and a working layer (2113) disposed on the outer circular surface of the elastic buffer layer (2112). The roller core (2111) is used to provide rotational support, and the working layer (2113) is used to contact the outer surface of the bar to be cut.

3. The bolt cutting equipment according to claim 2, characterized in that: The pre-cutting centering conveyor assembly (20) further includes a carrying mechanism (23), which includes a carrying plate (231) and a fixed ear (232). The surface of the carrying plate (231) is provided with a clearance opening along a first direction for the bar to be cut to pass through. The fixed ear (232) is provided on the surface of the carrying plate (231) and located outside the clearance opening. The number of fixed ears (232) corresponds to the number of centering rollers (211). The end of the roller core (2111) is rotatably connected to the fixed ear (232).

4. The bolt cutting equipment according to claim 3, characterized in that: The bearing mechanism (23) also includes a support sleeve (233), the surface of which is provided with a through hole extending in a first direction, and the support sleeve (233) is fitted onto the outer circumference of the bearing disk (231) through the through hole.

5. The bolt cutting equipment according to claim 3, characterized in that: The tool centering and conveying assembly (20) also includes a rotary mechanism (24), the drive end of which is used to drive the bearing disk (231) to rotate along the axis of the first direction, and the working layer (2113) is a wear-resistant ceramic layer.

6. The bolt cutting equipment according to claim 5, characterized in that: The rotary mechanism (24) includes a first drive member (241) and a crank rocker member (242). The power input end of the crank rocker member (242) is fixedly connected to the drive end of the first drive member (241), and the power output end of the crank rocker member (242) is connected to the bearing plate (231).

7. The bolt cutting equipment according to claim 5, characterized in that: The rotary mechanism (24) includes a second driving member (243) and a worm gear member (244). The power input end of the worm gear member (244) is fixedly connected to the driving end of the second driving member (243), and the power output end of the worm gear member (244) is connected to the bearing disk (231) for driving the bearing disk (231) to rotate along the axis of the first direction.

8. The bolt cutting equipment according to claim 1, characterized in that: The cutting tool assembly (10) includes a disc cutting blade (11) and a drive mechanism (12), wherein the disc cutting blade (11) is fixedly connected to the output end of the drive mechanism (12) along a first direction; The disc cutting blade (11) is provided with a first position and a second position. The output end of the drive mechanism (12) is used to control the disc cutting blade (11) to rotate while switching between the first position and the second position. When the disc cutting blade (11) is in the first position, it does not coincide with the projection of the bar to be cut along the first direction. When the disc cutting blade (11) is in the second position, it at least partially coincides with the projection of the bar to be cut along the first direction.

9. The bolt cutting equipment according to claim 8, characterized in that: The drive mechanism (12) includes a swing arm (121), a fixed part and a rotating part (122). One end of the swing arm (121) is rotatably connected to the fixed part, and the fixed end of the rotating part (122) is located at the other end of the swing arm (121). The disc-shaped cutting blade (11) is fixedly connected to the rotating end of the rotating part (122).

10. The bolt cutting equipment according to claim 3, characterized in that: It also includes a feeding cylinder (30), which extends along a first direction and has a feeding hole on its end face along the first direction. The center of the feeding hole coincides with the axis of the bearing plate (231) along the first direction.

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