19 and the stationary blade 18 may be substantially conformingly fitted when shearing the threaded rod 17, preventing creation of a gap between the moving blade 19 and the stationary blade 18 when shearing the threaded rod 17; otherwise, the gap would lead to a jagged shear-off section of the sheared threaded rod 17.

Referring to FIGS. 11 and 12, in this implementation, a stationary threaded cutting edge 181 is provided on the stationary blade 18, and a moving threaded cutting edge 191 is provided on the moving blade 19. Furthermore, to facilitate discharging chips produced during shearing the threaded rod 17 without affecting the profile of the shear-off section of the threaded rod 17, notches 15 joining the threaded cutting edges are arranged on opposite surfaces of the stationary blade 18 and the moving blade 19, respectively, the notches 15 may receive the chips produced from shearing. In another implementation, the notch 15 may only be arranged on the stationary blade 18 or on the moving blade 19, or no notch 15 is provided on the stationary blade 18 or the moving blade 19.

FIG. 12 schematically illustrates an example of the notch 15 on the stationary blade 18, in which threads of the threaded cutting edges of the stationary blade 18 and the moving blade 19 being both fitted with threads on the threaded rod 17, which prevents the threaded rod 17 from axial displacement during shearing and thusly may improve shearing accuracy and precision with reduced burrs. The notch 15 may receive the chips produced from shearing the threaded rod 17, preventing the chips from residing between the stationary blade 18 and the moving blade 19, thereby preventing the cut-off threaded rod 17 from being burred due to the residual chips, which improves the section profile of the cut-off threaded rod 17.

Furthermore, the notch 15 joins a threaded sloped surface 1811, 1911 at an end portion of respective threaded cutting edge 181, 191. A gap is formed between the threaded sloped surface 1811, 1911 and an end surface of the corresponding stationary blade 18 or moving blade 19. On one hand, joining between the notch 15 and the threaded sloped surface 1811, 1911 may reduce chips produced during shearing and facilitate the chips casting off from the shear-off section of the threaded rod 17; on the other hand, the chips may also enter the notch 15 along the threaded sloped surface 1811, 1911, which facilitates removal of the shearing chips to prevent the chips from residing nearby respective threaded cutting edge.

Furthermore, a recessed portion 151 is arranged at a position of the notch 15 distal from the respective threaded cutting edge 181, 191, i.e., the position of the notch 15 distal from the threaded cutting edge has a large accommodation space, facilitating the chips to gather in the recessed portion 151, whereby more chips can be received, which mitigates friction between the blades and the chips and thus may prevent the shear-off section of the threaded rod from being burred.

Furthermore, a discharge port 153 is arranged for the notch 15 at a cutting side of the threaded cutting edge 181, 191, so that the chips in the notch 15 may be discharged via the discharge port 153, preventing excessive chips accumulated in the notch, further mitigating friction between the blades and the chips.

To guide the chips to be discharged via the discharge port 153, a guide surface 152 which is higher inward and lower outward and extends till the discharge port is arranged for the notch 15, the guide surface 152 being configured to guide the chips to the discharge port 153. Specifically, the guide surface 152 may be a cambered surface or a beveled surface. The guide surface 152 is configured to guide the chips in the notch 15 to flow to the discharge port 153; since the discharge port 153 is distal from the shear-off section of the threaded rod, no excessive chips would be accumulated in the notch, which facilitates their discharge without affecting the shearing effect of the threaded rod.

In this implementation, the notch 15 extends along the arc at one side of the outer periphery of the threaded cutting edge 181, 191, one end of the notch 15 being close to the middle point of the arc, an opposite end thereof extending till the discharge port 153. Since the threaded cutting edges 181, 191 extend helically, the profiles of the threaded sloped surfaces 1811, 1911 at opposite sides of the stationary blade 18 and the moving blade 19 also change in the arc direction of the threaded cutting edges, so that the notch 15 may be arranged at the wider side of respective threaded sloped surfaces 1811, 1911, whereby the chips may enter the notch 15 along respective threaded sloped surfaces 1811, 1911. Specifically, two mutually perpendicular sides are arranged at a position of the notch 15 distant from the arc of respective threaded cutting edge, so that the axial projection of the notch 15 is substantially of a rectangular trapezoid shape, the arc of the threaded cutting edge being located on a beveled side of the trapezoid, the discharge port 153 being located at the bottom side of the trapezoid, an end of the guide surface 152 proximal to the top side being higher than an end proximal to the bottom side. This design facilitates profiling (e.g., milling) the blades to form the notch 15; without considering the blade profiling factor, the notch 15 may also be designed as other shapes, which will not be detailed here.

Furthermore, the notch 15 on the stationary blade 18 and the notch 15 on the moving blade 19 are shaped identically. The notches 15 on the two blades may be combined to form a larger reception space to receive more chips. The notch 15 on the stationary blade 18 is located at the arc side of the stationary threaded cutting edge 181, while the notch 15 on the moving blade 19 is located at an opposite side of the arc of the moving threaded cutting edge 191, i.e., the notch on the stationary blade 18 and the notch on the moving blade 19 are distributed in a staggered manner; since the notches 15 on the two blades are spaced distantly in the peripheral direction of the threaded rod 17, chips produced from different shear-off section positions can be collected, which may further prevent the shear-off section of the threaded rod 17 from being burred. In another implementation, the notch 15 on the stationary blade 18 and the notch 15 on the moving blade 19 may be located at the same sides of the arcs of the threaded cutting edges.

In this implementation, to provide more shearing options, the stationary blade 18 is formed of a square structure with one stationary threaded cutting edge 181 being arranged on each of the four sides; the moving blade 19 is also formed of a square structure with one moving threaded cutting edge 191 being arranged on each of the four sides; the diameters of the four stationary threaded cutting edges 181 are different from one another, so are the diameters of the four moving threaded cutting edges 191. The four stationary threaded cutting edges 181 are arranged in one-to-one correspondence with the four moving threaded cutting edges 191 so as to be capable of shearing threaded rods 17 of four different specifications. Since the stationary blade 18 and the moving blade 19 are both formed of a square structure with a threaded cutting edge arranged on each side, it is ensured that the threaded rod cutter 100 is stressed uniformly during the shearing process, which reduces stress concentration and improves shearing precision. Since the four stationary threaded cutting edges 181 and the four moving threaded cutting edges 191 are different in sizes, they may be adapted to threaded rods 17 of different specifications so as to be adapted to different shearing requirements, whereby the threaded rod cutter 100 is capable of shearing threaded rods 17 of different diameters or specifications, which improves universality of the cutter. Since the diameters of the stationary threaded cutting edges 181 and the moving threaded cutting edges 191 are matched with the specification of the threaded rod 17, the shearing efficiency can be improved, the friction and resistance between the blades and the threaded rod 17 can be reduced, and the shearing speed can be accelerated.

Specifically, the diameters of the four stationary cutting edges 181 and the four moving threaded cutting edges 191 all increase or shrink sequentially in a clockwise direction or counterclockwise direction, i.e., the diameters of the stationary threaded cutting edges 181 and the moving threaded cutting edges 191 increase or shrink sequentially in a same direction, which can ensure stable fitting between the blades and the threaded rod 17 during the shearing process, thereby enhancing shearing stability. The sequential change of the diameters of the stationary threaded cutting edges 181 and the moving threaded cutting edges 191 may reduce accidental mismatch between the blades and the threaded rod 17, so that the threaded rod cutter 100 can be adapted to change between threaded rods 17 of different diameters more quickly while ensuring consistency between shearing trajectories.

In this implementation, a locating recess 112 is arranged at an edge of the shear base 11, and a first securing groove 111 facing the locating recess 112 is arranged at a front side of the shear base 11; the first securing groove 111 ensures mounting position of the stationary blade 18, thereby ensuring that substantially no gaps are left between the moving blade 19 and the stationary blade 18 when they are fitted to shear the threaded rod 17. Provision of the locating recess 112 allows for accurately locating the threaded rod 17 when being sheared, thereby ensuring accuracy of the shearing position. The locating recess 112 facilitates locating the threaded rod 17, preventing its swing or displacement during the shearing process, thereby improving shearing stability and reliability. The locating recess 112 facilitates placing and locating the threaded rod 17; meanwhile, the first securing groove 111 facilitates holding the stationary blade 18 to an appropriate position to thereby facilitate its mounting and adjustment.

In this implementation, a second securing groove 122 facing the threaded rod locating recess 112 is arranged at a rear side of the shear lever 12, the moving blade 19 being secured in the second securing groove 122; and a locating surface 123 is arranged at a front side surface of the shear base 11 above the locating recess 112. The second securing groove 122 allows for the moving blade 19 to be securely held on the shear lever 12, ensuring that the moving blade 19 does not get loose or offset during the shearing process, thereby enhancing shearing stability and accuracy. Provision of the locating surface 123 allows for the moving blade 19 to be accurately located above the sheared position of the threaded rod 17, which ensures an appropriate contact position between the moving blade 19 and the threaded rod 17, thereby enhancing shearing precision and efficiency.

A rotary supporting hole 114 and a shaft hole 113 are provided on the shear base 11, a bolt 16 is provided on the shear base 11, and a swing supporting hole 121 fitted with the bolt 16 is provided on the shear lever 12. A rear end of the bolt 16 passes through the swing supporting hole 121 and the shaft hole 113 on the shear base 11 and is attached with a nut 161; and a front end of the bolt 16 is provided with a limiting flange 162, the limiting flange 162 abutting against a front surface of the shear lever 12. The cam 13 is provided with a central shaft 131, the central shaft 131 being rotatably inserted in the rotary supporting hole 114. Of course, the central shaft 131 may also be rotatably mounted in the rotary supporting hole 114 via a bearing. It would be appreciated that the bolt 16 may be replaced with a pin shaft or another similar member.

In this implementation, securing holes connected via a fastening screw are provided at respective centers of the stationary blade 18 and the moving blade 19; the securing holes include a first securing hole 182 provided on the stationary blade 18 and a second securing hole 192 provided on the moving blade 19; the fastening screw being fitted with the first securing hole 182 and the second securing hole 192 respectively to securely attach the stationary blade 18 and the moving blade 19 to the cutter body, so that the stationary blade 18 and the moving blade 19 would not get loose leading to blade offset or falloff during the shearing process, thereby enhancing shearing stability. The first securing hole 182 and the second securing hole 192 connected via the fastening screw facilitate replacement of the stationary blade 18 and the moving blade 19, which simplifies the user's blade replacement operation, thereby enhancing blade replacement efficiency. The first securing hole 182 and the second securing hole 192 allow for the user to adjust the positions of the stationary blade 18 and the moving blade 19 by loosing or fastening the screw, which facilitates precise adjustment of the blades and ensures shearing accuracy and consistency.

Specifically, locating holes connected via a locating pin are provided at positions offset from the centers of the stationary blade 18 and the moving blade 19, respectively; the locating holes connected via the locating pin allow for accurately locating the stationary blade 17 and the moving blade 19, which ensures positions of the blades during the shearing process and enhances shearing accuracy. Fitting between the locating holes and the locating pin may mitigate swinging and rocking of the blades during the shearing process, reduce vibration of the blades, and enhance shearing stability. The fitting between the locating pin and the locating holes may also prevent accidental falloff or displacement of the blades, thereby enhancing shearing safety.

Referring to FIGS. 13, 14 and 15, in a preferred implementation of the threaded rod cutter 100, the threaded rod cutter 100 further comprises a support base 2, the support base 2 having a rotary member