Iron worker cold saw with multiple combined saw bodies for use

Abstract

The ironwork cold saw comprises a body, the body comprises a connecting face, the connecting face is connected with a tool bit, the tool bit comprises a cutting face arranged on the side away from the connecting face, the tool bit comprises a wide part arranged on the side close to the cutting face, and the wide part is arranged on the side close to the cutting face. The tool bit comprises a narrow part arranged on the side away from the cutting face, and a heat dissipation inclined face is formed between the wide part and the narrow part. In the embodiment, the tool bit is arranged to be of two sections of unbalanced structures, the wide part and the narrow part are formed, therefore, the inclined side face is formed between the wide part and the narrow part, the side face is the heat dissipation inclined face, and due to the fact that the heat dissipation inclined face is obliquely arranged, the side, close to the cutting face, of the tool bit is the wide part, in the cutting process, the cutting face can make contact with a cut object; and the other heat dissipation slopes do not make contact with the cut object, so that gaps between the heat dissipation slopes and the cut object are guaranteed, friction heat production is reduced, meanwhile, the heat dissipation efficiency is improved, and due to the fact that friction is reduced, the cutting smoothness can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of saw blades, and in particular to a cold saw for ironworkers used in combination of multiple blades. Background Art

[0002] In the prior art, saw blades are widely used for cutting metal, wood and other objects. The saw blades achieve the cutting effect by rotating at high speed. During the cutting process, the heat dissipation of the saw blade needs to be given special consideration, which will affect the cutting quality and the structural strength and life of the saw blade. The heat dissipation of the saw blade needs to be considered especially at the position of the cutter head.

[0003] For example, the publication number "CN118322289A" discloses "a special angle alloy saw blade and its processing method", including a saw blade base and an alloy cutter head welded on the saw blade base, and the front angle formed between the alloy cutter head and the saw blade base adopts a negative angle structure setting. A special angle alloy saw blade processing method is also disclosed. However, in actual application, each surface of the cutter head will have full contact with the object to be cut during the cutting process, which is not conducive to three people, and the friction heat generation area reaches the maximum. Summary of the invention

[0004] In view of the problems that the prior art mentioned in the background technology is not conducive to heat dissipation and has a large heat generation area, the present invention provides a combination of multiple ironwork cold saws, which can increase the heat dissipation area and reduce the area of ​​heat generated by friction between the object during the cutting process, thereby ensuring the cutting quality and increasing the service life of the saw blade.

[0005] To achieve the above objectives, the present invention adopts the following technical solutions.

[0006] A cold saw for iron workers used in combination includes a body, the body includes a connecting surface, a cutter head is connected to the connecting surface, the cutter head includes a cutting surface arranged on a side away from the connecting surface, the cutter head includes a wide portion arranged on a side close to the cutting surface, the cutter head includes a narrow portion arranged on a side away from the cutting surface, and a heat dissipation slope is formed between the wide portion and the narrow portion. In this embodiment, the cutter head is arranged in two sections of an unbalanced structure to form a wide portion and a narrow portion, so that an inclined side surface is formed between the wide portion and the narrow portion, and the side surface is a heat dissipation slope. Due to the inclined setting of the heat dissipation slope and the wide portion on the side of the cutter head close to the cutting surface, during the cutting process, the cutting surface will contact the object to be cut, while the remaining heat dissipation slopes will not contact the object to be cut, thereby ensuring a gap between the heat dissipation slope and the object to be cut, reducing frictional heat generation, and improving heat dissipation efficiency. In addition, due to the reduced friction, the smoothness of the cutting can be improved.

[0007] Preferably, the cutter head includes a top, and the cutting surface is provided with a cutting arc surface near the top. The cutting arc surface can improve the smoothness of the cutting process, thereby improving the cutting quality, and the setting of the cutting arc surface further reduces the contact area between the cutter head and the object being cut during the cutting process.

[0008] Preferably, the heat dissipation slope includes an arc-shaped heat dissipation surface arranged on the top. The arc-shaped heat dissipation surface is arranged on the top, which can further reduce the contact area, and at the same time further increase the gap space between the object being cut, thereby improving the heat dissipation efficiency.

[0009] Preferably, the cutter head includes a side surface, and the heat dissipation slope includes a lateral heat dissipation surface arranged on the side surface. The lateral heat dissipation surface is arranged on the side of the cutter head, wherein the lateral heat dissipation surfaces are arranged on both sides of the cutting surface respectively. Furthermore, on the side close to the cutting surface, that is, at the wide portion, the distance between the two lateral heat dissipation surfaces is wider, and on the side of the cutter head away from the cutting surface, that is, at the narrow portion, the distance between the two lateral heat dissipation surfaces is narrower. Since the direction from the narrow portion to the wide portion is the rotational cutting direction, there is also a certain gap space between the lateral heat dissipation surface and the object being cut during the cutting process. Only the cutting surface and the object being cut are in contact, so that the lateral heat dissipation surface can achieve the heat dissipation effect, while avoiding the frictional heat generation and frictional resistance between the lateral heat dissipation surface and the object being cut, thereby improving the cutting smoothness and the structural life of the saw blade.

[0010] Preferably, the main body is provided with a plurality of tooth backs, and a chip removal groove is provided between adjacent tooth backs. The chip removal efficiency can be improved by providing the chip removal groove, and the situation of insufficient heat dissipation and obstructed cutting caused by chip blockage can be avoided.

[0011] Preferably, the tooth back includes an arc connecting surface, the chip removal groove includes an arc groove bottom, and the arc connecting surface connects the arc groove bottom. The chip removal groove bottom is provided with an arc groove bottom, and the tooth back is provided with an arc connecting surface, wherein the arc connecting surface is transitionally connected with the arc groove bottom to form a smoothly transitioned connection area, thereby expanding the chip removal area during the cutting process, and further improving the chip removal efficiency, thereby avoiding the reduction of heat dissipation efficiency caused by chip blockage.

[0012] Preferably, the body comprises a central hole, a connecting shaft is passed through the central hole, and a plurality of bodies are detachably connected to the connecting shaft. The connecting shaft passes through the central hole to connect a plurality of bodies, thereby improving processing efficiency.

[0013] Preferably, a positioning keyway is provided on the center hole, and the positioning keyway includes an angle area, and a semi-open hole is provided on the angle area. By providing a positioning keyway on the center hole, it is possible to avoid the saw blade from slipping due to excessive resistance during the cutting process, and solve the problem of relative sliding between the saw blade and the gasket due to excessive resistance during the use of multiple blades, resulting in tooth breakage.

[0014] Preferably, the body includes a vibration-damping groove, the vibration-damping groove is connected with a chip groove, the vibration-damping groove includes a tangential surface facing the cutting direction, the vibration-damping groove includes a back tangential surface facing the cutting direction, and the chip groove is arranged on the side of the tangential surface facing the cutting direction. The vibration-damping groove is divided into a back tangential surface and a tangential surface, wherein the back tangential surface is a groove surface facing the cutting direction, and the tangential surface is a groove surface facing the cutting direction. Since the vibration-damping groove reduces the connection relationship between the parts of the saw blade, the vibration-damping effect can be achieved. If there are debris in the vibration-damping groove during the cutting process, the vibration-damping effect of the vibration-damping groove will disappear. Therefore, it is necessary to remove the debris between the vibration-damping grooves as soon as possible during the rotation process, so as to ensure the separation effect of the vibration-damping groove. Therefore, in this embodiment, a chip groove is arranged on the tangential surface, and the chip groove is arranged on one side of the tangential surface, so that during the rotation process, the debris in the vibration-damping groove can be removed as soon as possible through inertia, the movement difference caused by the movement of the remaining debris, and the interference between the circular saw and the object to be cut.

[0015] At the same time, due to the groove structure of the chip groove, the area on the cutting surface is reduced, thereby reducing the probability of debris jamming. At the same time, due to the unbalanced corresponding state of the area between the cutting surface and the back cutting surface, the effect on the stuck debris in the middle is also in an unbalanced state, and the stuck debris cannot be in a state of balanced force, thereby accelerating the removal of the stuck debris.

[0016] Preferably, the body includes a vibration-damping groove, the vibration-damping groove includes an outer portion close to a side of the cutter head, the outer portion is a "V"-shaped groove, and the opening direction of the "V"-shaped groove is opposite to the cutting direction. The vibration-damping groove includes an outward side surface arranged near one side of the cutter head. The outer side surface is generally arranged as a linear groove structure due to processing requirements. In this embodiment, the position of the linear groove is named as the outer portion. Since the outer portion is arranged near the cutter head, the debris generated during the cutting process is more likely to accumulate on the outer portion, thereby affecting the heat dissipation and vibration reduction effects. Therefore, in this embodiment, the shape of the outer portion is set to a "V"-shaped groove structure, and the opening direction of the "V"-shaped groove is set to the side opposite to the cutting direction, so that the debris generated during the cutting process can be avoided as much as possible from accumulating on the outer portion. At the same time, since the structure of the "V"-shaped groove is an open groove structure inclined toward both sides, the debris generated in the vibration-damping groove in time can also be discharged from the inclined opening of the "V"-shaped groove during the rotation process. Further, the opening of the "V"-shaped groove is set to an expanded structure, that is, the groove size on both sides of the "V"-shaped groove is larger than the size in the middle of the "V"-shaped groove, so that the debris can be more easily discharged. At the same time, due to the large groove size, the debris stuck in the middle position is slightly vibrated and can be discharged along the groove direction.

[0017] The beneficial effects of the present invention are as follows: (1) It can increase the heat dissipation area and reduce the area of ​​heat generated by friction with the object during the cutting process, thereby ensuring the cutting quality and increasing the service life of the saw blade; (2) Solve the problem of tooth breaking caused by relative sliding between saw blades and gaskets due to excessive resistance when using multiple blades together; (3) It can prevent excessive debris from clogging the vibration reduction groove during use and affecting the vibration reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the first axonometric drawing of the present invention.

[0019] Figure 2 It is a second axonometric view of the present invention.

[0020] Figure 3 It is the third axonometric drawing of the present invention.

[0021] Figure 4 yes Figure 1 A partial enlarged view of point A in the middle.

[0022] Figure 5 yes Figure 2 A partial enlarged view of point B in the middle.

[0023] Figure 6 yes Figure 3 A partial enlarged view of point C in the middle.

[0024] Figure 7 This is a partial axonometric view of Example 3.

[0025] Figure 8 This is a partial axonometric view of Example 4.

[0026] In the figure: 1 body, 11 connection surface; 2 blade head, 21 cutting surface, 22 wide portion, 23 narrow portion, 24 heat dissipation inclined surface, 241 arc-shaped heat dissipation surface, 242 lateral heat dissipation surface, 25 top, 251 cutting arc surface, 26 side surface; 3 tooth backs, 31 arc connection surfaces; 4 chip flutes, 41 arc-shaped flute bottom; 5 center hole, 51 positioning keyway, 52 corner area, 53 semi-open hole; 6 vibration reduction groove, 61 chip groove, 62 forward cutting surface, 63 back cutting surface, 64 outer side. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0028] Embodiment 1: like Figure 1 , 2As shown in Figures 3, 4, and 5, the assembly and working process of the multiple ironwork cold saws used in combination in this embodiment are as follows: In this embodiment, a plurality of tooth backs 3 are arranged on the body 1, wherein the tooth backs 3 are arranged along the circumferential direction. Further, a connecting surface 11 is arranged on each tooth back 3, wherein the connecting surface 11 faces the cutting direction. The connecting surface 11 is connected to a cutter head 2. During the cutting process, the cutter head 2 contacts the object to be cut and performs cutting work by high-speed rotation. In the present embodiment, the cutter head 2 is arranged in the following shape: the cutter head 2 includes a cutting surface 21, and the cutting surface 21 is arranged toward the side of the rotation direction. Furthermore, the cutter head 2 includes a top 25, wherein the cutter head 2 is arranged in a shape of a cutting arc surface 251 on the top 25. The cutting arc surface 251 is inclined along the side away from the cutting direction: inclined toward the center of the main body 1. Furthermore, a cutting surface is arranged on the cutting arc surface 251, which forms an arc-shaped heat dissipation surface 241, wherein the arc-shaped heat dissipation surface 241 is inclined closer to the center of the main body 1 than the cutting arc surface 251. Therefore, in this embodiment, a wide portion 22 is formed on the side of the cutter head 2 close to the cutting surface 21, and a narrow portion 23 is formed on the side of the cutter head 2 far from the cutting surface 21, and a heat dissipation slope 24 is formed between the wide portion 22 and the narrow portion 23. The heat dissipation slope 24 in this embodiment is an arc-shaped heat dissipation surface 241 arranged at the top 25. Through the arrangement of the arc-shaped heat dissipation surface 241, the arc-shaped heat dissipation surface 241 will not contact the object to be cut during the cutting process, and at the same time, the gap space between the arc-shaped heat dissipation surface 241 and the object to be cut is increased, thereby increasing the heat dissipation space at the top 25, thereby increasing the heat dissipation area, reducing the frictional heat generation area, and reducing the frictional resistance during the cutting process. In addition, due to the arrangement of the cutting arc surface 251, the resistance during the cutting process can be reduced, the smoothness of the cutting is improved, and the sharpness of the saw blade is improved.

[0029] Furthermore, in this embodiment, a chip groove 4 is provided between each tooth back 3 on the main body 1, wherein a circular arc groove bottom 41 is provided at the bottom of the chip groove 4, and an arc connecting surface 31 is provided on the tooth back 3, wherein the circular arc connecting surface 31 is transitionally connected with the circular arc groove bottom 41 to form a smoothly transitioned connection area, thereby expanding the chip removal area during the cutting process, and further improving the chip removal efficiency, thereby avoiding the blockage of debris causing the heat dissipation efficiency to be reduced.

[0030] In the present embodiment, several of the chip grooves 4 are connected with vibration-damping grooves 6, wherein the vibration-damping groove 6 is hook-shaped on the side close to the center of the main body 1 to ensure good vibration-damping performance. A plurality of circular heat dissipation holes are also provided on the main body 1, and the heat dissipation holes are arranged along the circumferential direction and are arranged close to the main body 1. Furthermore, in the present embodiment, a center hole 5 is provided in the central part of the main body 1, and the center hole 5 is used to connect the connecting shaft. Multiple main bodies 1 can be connected together through the connecting shaft, thereby realizing the function of synchronous cutting of multiple circular saws and improving the cutting efficiency during the cutting process.

[0031] Furthermore, in the present embodiment, a positioning key slot 51 is provided on the center hole 5, and thus a positioning key is correspondingly provided on the connecting shaft, and the positioning key slot 51 is connected to the positioning key, so that the stability of the connection can be ensured, and at the same time, the saw blade slipping due to excessive cutting resistance, thereby causing the saw blade to hit the saw blade, and solves the problem of tooth hitting caused by relative sliding of the saw blade and the gasket due to excessive resistance during the use of multiple pieces in combination. In the present embodiment, semi-open holes 53 are provided on the corner areas 52 of the four corners of the positioning key slot 51. Since the positioning key slot 51 is connected to the center hole 5, there is no corner area 52 at the position of the positioning key slot 51 close to the center hole 5, and the corner area 52 is only provided on the side of the positioning key slot 51 away from the center hole 5. The corner area 52 is provided with a semi-open hole 53, which can reduce stress concentration. The setting of the semi-open hole 53 can provide a deformation amount, thereby avoiding fracture at the corner area 52.

[0032] Embodiment 2: like Figure 1 , 2As shown in , 3, 4, 5, and 6, the assembly and working process of the multiple ironwork cold saws used in combination in this embodiment are as follows: In this embodiment, a plurality of tooth backs 3 are arranged on the main body 1, wherein the tooth backs 3 are arranged along the circumferential direction. Further, a connecting surface 11 is arranged on each tooth back 3, wherein the connecting surface 11 faces the cutting direction. A cutter head 2 is connected to the connecting surface 11, and during the cutting process, the cutter head 2 contacts the object to be cut, and performs cutting work by high-speed rotation. In this embodiment, the setting shape of the cutter head 2 is as follows: the cutter head 2 includes a cutting surface 21, and the cutting surface 21 is arranged toward the rotation direction. Further, the cutter head 2 includes a top 25, wherein the setting shape of the cutter head 2 on the top 25 is a cutting arc surface 251, and the cutting arc surface 251 is inclined along the side away from the cutting direction: inclined close to the center of the main body 1. Further, a cutting surface is arranged on the cutting arc surface 251, and the cutting surface forms The arc-shaped heat dissipation surface 241 is inclined closer to the center of the main body 1 than the cutting arc-shaped surface 251, so that the arc-shaped heat dissipation surface 241 will not contact the object to be cut during the cutting process, and at the same time, the gap space between the arc-shaped heat dissipation surface 241 and the object to be cut is increased, thereby increasing the heat dissipation space at the top 25, thereby increasing the heat dissipation area, reducing the frictional heat generation area, and reducing the frictional resistance during the cutting process. In addition, due to the setting of the cutting arc-shaped surface 251, the resistance during the cutting process can be reduced, the smoothness of the cutting is improved, and the sharpness of the saw blade is improved.

[0033] Furthermore, in the present embodiment, a lateral heat dissipation surface 242 is provided at the side 26 of the cutter head 2, wherein the lateral heat dissipation surfaces 242 are respectively provided on both sides of the cutting surface 21. Furthermore, on the side close to the cutting surface 21, that is, at the wide portion 22, the distance between the two lateral heat dissipation surfaces 242 is wider, and on the side of the cutter head 2 away from the cutting surface 21, that is, at the narrow portion 23, the distance between the two lateral heat dissipation surfaces 242 is narrower. Since the direction from the narrow portion 23 to the wide portion 22 is the rotational cutting direction, there is also a certain gap space between the lateral heat dissipation surface 242 and the object being cut during the cutting process. Only contact is generated between the cutting surface 21 and the object being cut, so that the lateral heat dissipation surface 242 can achieve the heat dissipation effect, while avoiding the frictional heat generation and frictional resistance between the lateral heat dissipation surface 242 and the object being cut, thereby improving the cutting smoothness and the structural life of the saw blade.

[0034] Furthermore, in this embodiment, a chip groove 4 is provided between each tooth back 3 on the main body 1, wherein a circular arc groove bottom 41 is provided at the bottom of the chip groove 4, and an arc connecting surface 31 is provided on the tooth back 3, wherein the circular arc connecting surface 31 is transitionally connected with the circular arc groove bottom 41 to form a smoothly transitioned connection area, thereby expanding the chip removal area during the cutting process, and further improving the chip removal efficiency, thereby avoiding the blockage of debris causing the heat dissipation efficiency to be reduced.

[0035] In the present embodiment, several of the chip grooves 4 are connected with vibration-damping grooves 6, wherein the vibration-damping groove 6 is hook-shaped on the side close to the center of the main body 1 to ensure good vibration-damping performance. A plurality of circular heat dissipation holes are also provided on the main body 1, and the heat dissipation holes are arranged along the circumferential direction and are arranged close to the main body 1. Furthermore, in the present embodiment, a center hole 5 is provided in the central part of the main body 1, and the center hole 5 is used to connect the connecting shaft. Multiple main bodies 1 can be connected together through the connecting shaft, thereby realizing the function of synchronous cutting of multiple circular saws and improving the cutting efficiency during the cutting process.

[0036] Furthermore, in the present embodiment, a positioning key slot 51 is provided on the center hole 5, and thus a positioning key is correspondingly provided on the connecting shaft, and the positioning key slot 51 is connected to the positioning key, so that the stability of the connection can be ensured, and at the same time, the saw blade slipping due to excessive cutting resistance, thereby causing the saw blade to hit the saw blade, and solves the problem of tooth hitting caused by relative sliding of the saw blade and the gasket due to excessive resistance during the use of multiple pieces in combination. In the present embodiment, semi-open holes 53 are provided on the corner areas 52 of the four corners of the positioning key slot 51. Since the positioning key slot 51 is connected to the center hole 5, there is no corner area 52 at the position of the positioning key slot 51 close to the center hole 5, and the corner area 52 is only provided on the side of the positioning key slot 51 away from the center hole 5. The corner area 52 is provided with a semi-open hole 53, which can reduce stress concentration. The setting of the semi-open hole 53 can provide a deformation amount, thereby avoiding fracture at the corner area 52.

[0037] Embodiment 3: like Figure 1 , 7As shown, the assembly and working process of the multiple ironwork cold saws used in combination in this embodiment are as follows: In this embodiment, a plurality of tooth backs 3 are arranged on the main body 1, wherein the tooth backs 3 are arranged along the circumferential direction. Further, a connecting surface 11 is arranged on each tooth back 3, wherein the connecting surface 11 faces the cutting direction. The connecting surface 11 is connected to the cutter head 2, and during the cutting process, the cutter head 2 contacts the object to be cut, and performs cutting work by high-speed rotation. In this embodiment, the setting shape of the cutter head 2 is as follows: the cutter head 2 includes a cutting surface 21, and the cutting surface 21 is arranged toward the rotation direction. Further, the cutter head 2 includes a top 25, wherein the setting shape of the cutter head 2 on the top 25 is a cutting arc surface 251, and the cutting arc surface 251 is inclined along the side away from the cutting direction: inclined close to the center of the main body 1. Further, a cutting surface is arranged on the cutting arc surface 251, and the cutting surface forms The arc-shaped heat dissipation surface 241 is inclined closer to the center of the main body 1 than the cutting arc-shaped surface 251, so that the arc-shaped heat dissipation surface 241 will not contact the object to be cut during the cutting process, and at the same time, the gap space between the arc-shaped heat dissipation surface 241 and the object to be cut is increased, thereby increasing the heat dissipation space at the top 25, thereby increasing the heat dissipation area, reducing the frictional heat generation area, and reducing the frictional resistance during the cutting process. In addition, due to the setting of the cutting arc-shaped surface 251, the resistance during the cutting process can be reduced, the smoothness of the cutting is improved, and the sharpness of the saw blade is improved.

[0038] Furthermore, in this embodiment, a chip groove 4 is provided between each tooth back 3 on the main body 1, wherein a circular arc groove bottom 41 is provided at the bottom of the chip groove 4, and an arc connecting surface 31 is provided on the tooth back 3, wherein the circular arc connecting surface 31 is transitionally connected with the circular arc groove bottom 41 to form a smoothly transitioned connection area, thereby expanding the chip removal area during the cutting process, and further improving the chip removal efficiency, thereby avoiding the blockage of debris causing the heat dissipation efficiency to be reduced.

[0039] In the present embodiment, several of the chip grooves 4 are connected with vibration-damping grooves 6, wherein the vibration-damping groove 6 is hook-shaped on the side close to the center of the main body 1 to ensure good vibration-damping performance. A plurality of circular heat dissipation holes are also provided on the main body 1, and the heat dissipation holes are arranged along the circumferential direction and are arranged close to the main body 1. Furthermore, in the present embodiment, a center hole 5 is provided in the central part of the main body 1, and the center hole 5 is used to connect the connecting shaft. Multiple main bodies 1 can be connected together through the connecting shaft, thereby realizing the function of synchronous cutting of multiple circular saws and improving the cutting efficiency during the cutting process.

[0040] Furthermore, in the present embodiment, the vibration-damping groove 6 is divided into a back cutting surface 63 and a forward cutting surface 62, wherein the back cutting surface 63 is the groove surface on the side facing away from the cutting direction, and the forward cutting surface 62 is the groove surface on the side facing the cutting direction. Since the vibration-damping groove 6 reduces the connection relationship between the parts of the saw blade, the vibration-damping effect can be achieved. If there are debris in the vibration-damping groove 6 during the cutting process, the vibration-damping effect of the vibration-damping groove 6 will disappear. Therefore, it is necessary to remove the debris between the vibration-damping grooves 6 as soon as possible during the rotation process, so as to ensure the separation effect produced by the vibration-damping groove 6. Therefore, in the present embodiment, a chip groove 61 is provided on the forward cutting surface 62, and the chip groove 61 is provided on one side of the forward cutting surface 62, so that during the rotation process, the debris in the vibration-damping groove 6 can be removed as soon as possible through inertia, the motion difference caused by the movement of other debris, and the interference between the circular saw and the object to be cut.

[0041] At the same time, due to the groove structure of the chip groove 61, the area on the cutting surface 62 is reduced, thereby reducing the probability of debris jamming. At the same time, due to the unbalanced corresponding state of the area between the cutting surface 62 and the back cutting surface 63, the effect on the stuck debris in the middle is also in an unbalanced state, thereby making it impossible for the stuck debris to be in a state of balanced force, thereby accelerating the removal of the stuck debris.

[0042] Furthermore, in the present embodiment, a positioning key slot 51 is provided on the center hole 5, and thus a positioning key is correspondingly provided on the connecting shaft, and the positioning key slot 51 is connected to the positioning key, so that the stability of the connection can be ensured, and at the same time, the saw blade slipping due to excessive cutting resistance, thereby causing the saw blade to hit the saw blade, and solves the problem of tooth hitting caused by relative sliding of the saw blade and the gasket due to excessive resistance during the use of multiple pieces in combination. In the present embodiment, semi-open holes 53 are provided on the corner areas 52 of the four corners of the positioning key slot 51. Since the positioning key slot 51 is connected to the center hole 5, there is no corner area 52 at the position of the positioning key slot 51 close to the center hole 5, and the corner area 52 is only provided on the side of the positioning key slot 51 away from the center hole 5. The corner area 52 is provided with a semi-open hole 53, which can reduce stress concentration. The setting of the semi-open hole 53 can provide a deformation amount, thereby avoiding fracture at the corner area 52.

[0043] Embodiment 4: like Figure 1 , 8As shown, the assembly and working process of the multiple ironwork cold saws used in combination in this embodiment are as follows: In this embodiment, a plurality of tooth backs 3 are arranged on the main body 1, wherein the tooth backs 3 are arranged along the circumferential direction. Further, a connecting surface 11 is arranged on each tooth back 3, wherein the connecting surface 11 faces the cutting direction. The connecting surface 11 is connected to the cutter head 2, and during the cutting process, the cutter head 2 contacts the object to be cut, and performs cutting work by high-speed rotation. In this embodiment, the setting shape of the cutter head 2 is as follows: the cutter head 2 includes a cutting surface 21, and the cutting surface 21 is arranged toward the rotation direction. Further, the cutter head 2 includes a top 25, wherein the setting shape of the cutter head 2 on the top 25 is a cutting arc surface 251, and the cutting arc surface 251 is inclined along the side away from the cutting direction: inclined close to the center of the main body 1. Further, a cutting surface is arranged on the cutting arc surface 251, and the cutting surface forms The arc-shaped heat dissipation surface 241 is inclined closer to the center of the main body 1 than the cutting arc-shaped surface 251, so that the arc-shaped heat dissipation surface 241 will not contact the object to be cut during the cutting process, and at the same time, the gap space between the arc-shaped heat dissipation surface 241 and the object to be cut is increased, thereby increasing the heat dissipation space at the top 25, thereby increasing the heat dissipation area, reducing the frictional heat generation area, and reducing the frictional resistance during the cutting process. In addition, due to the setting of the cutting arc-shaped surface 251, the resistance during the cutting process can be reduced, the smoothness of the cutting is improved, and the sharpness of the saw blade is improved.

[0044] Furthermore, in this embodiment, a chip groove 4 is provided between each tooth back 3 on the main body 1, wherein a circular arc groove bottom 41 is provided at the bottom of the chip groove 4, and an arc connecting surface 31 is provided on the tooth back 3, wherein the circular arc connecting surface 31 is transitionally connected with the circular arc groove bottom 41 to form a smoothly transitioned connection area, thereby expanding the chip removal area during the cutting process, and further improving the chip removal efficiency, thereby avoiding the blockage of debris causing the heat dissipation efficiency to be reduced.

[0045] In the present embodiment, several of the chip grooves 4 are connected with vibration-damping grooves 6, wherein the vibration-damping groove 6 is hook-shaped on the side close to the center of the main body 1 to ensure good vibration-damping performance. A plurality of circular heat dissipation holes are also provided on the main body 1, and the heat dissipation holes are arranged along the circumferential direction and are arranged close to the main body 1. Furthermore, in the present embodiment, a center hole 5 is provided in the central part of the main body 1, and the center hole 5 is used to connect the connecting shaft. Multiple main bodies 1 can be connected together through the connecting shaft, thereby realizing the function of synchronous cutting of multiple circular saws and improving the cutting efficiency during the cutting process.

[0046] Furthermore, in the present embodiment, the vibration-damping groove 6 includes an outward side surface 26 disposed near one side of the cutter head 2. The outward side surface 26 is generally disposed as a linear groove structure due to processing requirements. In the present embodiment, the position of the linear groove is named as an outer portion 64. Since the outer portion 64 is disposed near the cutter head 2, the debris generated during the cutting process is more likely to accumulate on the outer portion 64, thereby affecting the heat dissipation and vibration reduction effects. Therefore, in the present embodiment, the shape of the outer portion 64 is set to a "V"-shaped groove structure, and the opening direction of the "V"-shaped groove is set to the side opposite to the cutting direction, so as to minimize the heat dissipation and vibration reduction effects. It can prevent the debris generated during the cutting process from accumulating on the outer portion 64. At the same time, since the structure of the "V"-shaped groove is an open groove structure inclined toward both sides, even if debris is generated in the vibration damping groove 6, it can also be discharged from the inclined opening of the "V"-shaped groove during the rotation process. Furthermore, in this embodiment, the opening of the "V"-shaped groove is set to an expanded structure, that is, the groove size on both sides of the "V"-shaped groove is larger than the size in the middle of the "V"-shaped groove, so that the debris can be more easily discharged. At the same time, due to the large size of the groove, the debris stuck in the middle position is slightly vibrated and can be discharged along the direction of the groove.

[0047] Furthermore, in the present embodiment, a positioning key slot 51 is provided on the center hole 5, and thus a positioning key is correspondingly provided on the connecting shaft, and the positioning key slot 51 is connected to the positioning key, so that the stability of the connection can be ensured, and at the same time, the saw blade slipping due to excessive cutting resistance, thereby causing the saw blade to hit the saw blade, and solves the problem of tooth hitting caused by relative sliding of the saw blade and the gasket due to excessive resistance during the use of multiple pieces in combination. In the present embodiment, semi-open holes 53 are provided on the corner areas 52 of the four corners of the positioning key slot 51. Since the positioning key slot 51 is connected to the center hole 5, there is no corner area 52 at the position of the positioning key slot 51 close to the center hole 5, and the corner area 52 is only provided on the side of the positioning key slot 51 away from the center hole 5. The corner area 52 is provided with a semi-open hole 53, which can reduce stress concentration. The setting of the semi-open hole 53 can provide a deformation amount, thereby avoiding fracture at the corner area 52.

Claims

1. A cold saw for ironworkers used in combination, characterized in that: The invention comprises a main body (1), the main body (1) comprising a connecting surface (11), a cutting head (2) being connected to the connecting surface (11), the cutting head (2) comprising a cutting surface (21) arranged on a side away from the connecting surface (11), the cutting head (2) comprising a wide portion (22) arranged on a side close to the cutting surface (21), the cutting head (2) comprising a narrow portion (23) arranged on a side away from the cutting surface (21), and a heat dissipation inclined surface (24) being formed between the wide portion (22) and the narrow portion (23).

2. A cold saw for ironworkers used in combination according to claim 1, characterized in that: The cutter head (2) comprises a top portion (25), and the cutting surface (21) is provided with a cutting arc surface (251) on a side close to the top portion (25).

3. A cold saw for ironworkers used in combination according to claim 2, characterized in that: The heat dissipation inclined surface (24) comprises an arc-shaped heat dissipation surface (241) arranged on the top (25).

4. A cold saw for ironworkers used in combination according to claim 1, characterized in that: The cutter head (2) comprises a side surface (26), and the heat dissipation inclined surface (24) comprises a lateral heat dissipation surface (242) arranged on the side surface (26).

5. A cold saw for ironworkers used in combination according to claim 1, characterized in that: The main body (1) is provided with a plurality of tooth backs (3), and chip removal grooves (4) are provided between adjacent tooth backs (3).

6. A cold saw for ironworkers used in combination according to claim 5, characterized in that: The tooth back (3) includes a circular arc connecting surface (31), the chip removal groove (4) includes a circular arc groove bottom (41), and the circular arc connecting surface (31) is connected to the circular arc groove bottom (41).

7. A cold saw for ironworkers used in combination according to claim 1, characterized in that: The body (1) comprises a central hole (5), a connecting shaft passes through the central hole (5), and a plurality of bodies (1) are detachably connected to the connecting shaft.

8. A cold saw for ironworkers used in combination according to claim 7, characterized in that: The central hole (5) is provided with a positioning keyway (51), the positioning keyway (51) includes an angle area (52), and the angle area (52) is provided with a semi-open hole (53).

9. A cold saw for ironworkers used in combination according to any one of claims 1 to 8, characterized in that: The body (1) comprises a vibration-damping groove (6), the vibration-damping groove (6) is connected to a chip groove (61), the vibration-damping groove (6) comprises a tangential surface (62) facing the cutting direction, the vibration-damping groove (6) comprises a back tangential surface (63) facing away from the cutting direction, and the chip groove (61) is arranged on the side of the tangential surface (62) facing away from the cutting direction.

10. A cold saw for ironworkers used in combination of multiple pieces according to any one of claims 1 to 8, characterized in that: The body (1) includes a vibration-damping groove (6), and the vibration-damping groove (6) includes an outer portion (64) close to a side of the cutter head (2), and the outer portion (64) is a "V"-shaped groove, and the opening direction of the "V"-shaped groove is opposite to the cutting direction.

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