Combined tool for chamfering crescent root of large-diameter ribbed steel bar

Abstract

The utility model relates to turning. The utility model relates to the technical field of boring and discloses a combined tool for chamfering the crescent root of a large-diameter ribbed steel bar, which comprises a tool shank, a mounting groove is formed in the front side of the tool shank, a tool bit is arranged on the front side of the tool shank, a mounting block is fixedly connected to the rear side of the tool bit, and the mounting block is matched with the mounting groove. A limiting hole is formed in the upper side of the mounting block, the bottom wall of the limiting hole extends out of the lower side of the mounting block, a limiting clamping mechanism is arranged on the cutter handle, the cutter head and the cutter handle can be connected together through the limiting clamping mechanism, the limiting clamping mechanism comprises a first sliding groove, and the first sliding groove is formed in the top wall of the mounting groove. The tool bit and the tool handle can be connected through the clamping mechanism, when the tool bit is damaged and the tool needs to be replaced, only the tool bit can be taken down through the clamping mechanism to be replaced, and then the cost needed for tool replacement is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of turning and boring, in particular to a combined tool for chamfering the crescent root of a large-diameter ribbed steel bar. Background Art

[0002] Since the raised transverse ribs (referred to as "crescents") of large diameter (Ф28-40mm) steel bars are extruded by the hole of the rolling groove, and are affected by the forward sliding displacement during the forming process, the processing stress at the intersection of the crescent root and the base circle of the steel bar is relatively concentrated. Therefore, when large diameter (Ф28-40mm) ribbed steel bars are cold-bent, the crescent root of the steel bar is most likely to produce cold bending cracks or even cold bending fractures. In order to avoid cold bending cracks or even cold bending fractures at the crescent root of the steel bar, a combination tool is used to chamfer the crescent root of the steel bar.

[0003] This can make the root of the transverse rib of the large-diameter steel bar transition smoothly, the appearance contour is more beautiful, and reduce the stress concentration at the root of the crescent, thereby improving the cold bending performance of the large-diameter steel bar and greatly reducing the quality risk of cold bending cracking and fracture of large-diameter steel bars. The cutter head and handle of the tool are usually integrated. When the cutter head is damaged, if it can be repaired, it will be repaired. If it cannot be repaired, the entire tool is generally replaced, and the tool is relatively expensive, which makes the overall replacement cost of the tool high. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a combination tool for chamfering the crescent roots of large-diameter ribbed steel bars, which has the function of connecting the tool head and the tool handle through a clamping mechanism. When the tool head is damaged and needs to be replaced, only the tool head can be removed and replaced through the clamping mechanism, thereby reducing the cost required for tool replacement.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a combined tool for chamfering the crescent root of a large-diameter ribbed steel bar, comprising a tool handle, a mounting groove is provided on the front side of the tool handle, a tool head is provided on the front side of the tool handle, a mounting block is fixedly connected to the rear side of the tool head, and the mounting block is adapted to the mounting groove;

[0008] Wherein, a limiting hole is provided on the upper side of the mounting block, and the bottom wall of the limiting hole extends out of the lower side of the mounting block;

[0009] Among them, a limited clamping mechanism is arranged on the tool handle, and the limited clamping mechanism can connect the tool head and the tool handle together.

[0010] Preferably, the position-limiting clamping mechanism comprises a first sliding groove, and the first sliding groove is provided on the top wall of the mounting groove;

[0011] The top wall of the first sliding groove extends out of the upper side of the tool handle, and the lower side of the mounting groove is provided with a second sliding groove.

[0012] Preferably, the bottom wall of the second sliding groove does not extend beyond the lower side of the tool handle;

[0013] Wherein, a fixing plate is arranged on the upper side of the tool handle, and a control block is fixedly connected to the upper side of the fixing plate.

[0014] Preferably, a limit rod is fixedly connected to the lower side of the fixed plate, and the lower side of the limit rod slides and extends into the interior of the first sliding groove;

[0015] Wherein, the limiting rod is matched with the limiting hole.

[0016] Preferably, the lower side of the limiting rod slides and extends into the interior of the second sliding groove;

[0017] Wherein, a connecting spring is sleeved on the outer surface of a portion of the limiting rod located on the upper side of the tool handle.

[0018] Preferably, the upper end of the connecting spring is fixedly connected to the lower side of the fixing plate;

[0019] Wherein, the lower side of the connecting spring is fixedly connected to the upper side of the tool handle.

[0020] (III) Beneficial effects

[0021] Compared with the prior art, the utility model provides a combined tool for chamfering the crescent root of a large-diameter ribbed steel bar, which has the following beneficial effects:

[0022] (1) When replacing the tool head of the combined tool for chamfering the crescent root of large-diameter ribbed steel bars, it is only necessary to pull the control block upward, and then the control block will drive the fixing plate to start moving upward synchronously, and then the fixing plate will drive the limit rod to start moving upward synchronously, and when the limit rod moves from the inside of the limit hole to the upper side of the mounting block, the clamping state is released, and then the staff can remove the damaged tool head. During installation, the new tool head can be installed on the tool handle according to the above method, and the tool head and the tool handle can be connected through the clamping mechanism. When the tool head is damaged and needs to be replaced, only the tool head can be removed and replaced through the clamping mechanism, thereby reducing the cost of tool replacement.

[0023] (2) The combined tool for chamfering the crescent root of a large-diameter ribbed steel bar connects the fixing plate to the tool handle by a connecting spring, so that during normal working, the connecting spring pulls the fixing plate toward the upper side of the tool handle, thereby causing the limit rod to approach the bottom wall of the second sliding groove, thereby making the clamping limit between the limit rod and the limit hole more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of a combined tool for chamfering the crescent root of a large-diameter ribbed steel bar according to the utility model;

[0025] Figure 2 This is a schematic diagram of the cross-sectional connection structure of the tool handle of the utility model;

[0026] Figure 3 This is a schematic diagram of the connection structure of the tool head of the utility model.

[0027] In the figure: 1. tool handle; 2. mounting groove; 3. tool head; 4. mounting block; 5. limiting hole; 6. first sliding groove; 7. second sliding groove; 8. fixing plate; 9. control block; 10. limiting rod; 11. connecting spring. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figures 1 to 3The utility model provides a new technical solution: a combined tool for chamfering the crescent root of a large-diameter ribbed steel bar, comprising a tool handle 1, a mounting groove 2 is provided on the front side of the tool handle 1, a tool head 3 is provided on the front side of the tool handle 1, a mounting block 4 is fixedly connected to the rear side of the tool head 3, the mounting block 4 is adapted to the mounting groove 2, a limiting hole 5 is provided on the upper side of the mounting block 4, the bottom wall of the limiting hole 5 extends out of the lower side of the mounting block 4, a limiting clamping mechanism is provided on the tool handle 1, the limiting clamping mechanism can connect the tool head 3 with the tool handle 1, the limiting clamping mechanism comprises a first sliding groove 6, the first sliding groove 6 is provided on the top wall of the mounting groove 2, the top wall of the first sliding groove 6 extends out of the upper side of the tool handle 1, and the lower side of the mounting groove 2 is provided with a first sliding groove 6. A second sliding groove 7 is provided, the bottom wall of the second sliding groove 7 does not extend out of the lower side of the tool handle 1, a fixing plate 8 is provided on the upper side of the tool handle 1, a control block 9 is fixedly connected to the upper side of the fixing plate 8, a limiting rod 10 is fixedly connected to the lower side of the fixing plate 8, the lower side of the limiting rod 10 slides and extends into the interior of the first sliding groove 6, the limiting rod 10 is adapted to the limiting hole 5, the lower side of the limiting rod 10 slides and extends into the interior of the second sliding groove 7, the outer surface of the limiting rod 10 located on the upper side of the tool handle 1 is sleeved with a connecting spring 11, the upper end of the connecting spring 11 is fixedly connected to the lower side of the fixing plate 8, and the lower side of the connecting spring 11 is fixedly connected to the upper side of the tool handle 1. When starting work, when the tool head 3 is damaged, the staff needs to promptly To replace the tool head 3, the staff only needs to pull the control block 9 upward, and the control block 9 will drive the fixing plate 8 to start moving upward synchronously, and the fixing plate 8 will drive the limiting rod 10 to start moving upward synchronously. At this time, the connecting spring 11 begins to become stretched, and the limiting rod 10 moves out from the inside of the second sliding groove 7 until the limiting rod 10 moves from the inside of the limiting hole 5 to the upper side of the mounting block 4. At this time, the clamping state is released, and the staff can move the tool head 3 to the front side to remove the tool head 3 and the mounting block 4, and then the staff can replace the damaged tool head 3, and after loosening the control block 9, the connecting spring 11 will reset from the stretched state, and the fixing plate 8 and the control block 9 will be pulled to reset. The fixed plate 8 will drive the limit rod 10 to start resetting synchronously. After resetting, the lower side of the limit rod 10 will move to the inside of the second sliding groove 7. When installing a new tool head 3, you only need to pull the control block 9 upward again. After the limit rod 10 moves to the inside of the first sliding groove 6, align the mounting block 4 with the mounting groove 2 and push the tool head 3 backward, so that the mounting block 4 will move to the inside of the mounting groove 2, and then release the control block 9. It can be seen from the above that the limit rod 10 will reset. After the reset, the limit rod 10 will pass through the limit hole 5 and move to the inside of the second sliding groove 7, and then the tool head 3 will complete the clamping limit with the tool handle 1. In this way, the tool head 3 and the tool handle 1 can be connected through the clamping mechanism.When the tool head 3 is damaged and needs to be replaced, the tool head 3 can be removed and replaced through the clamping mechanism, thereby reducing the cost of tool replacement.

[0030] Working principle: At the beginning of work, when the tool head 3 is damaged, the staff needs to replace the tool head 3 in time. At this time, the staff only needs to pull the control block 9 upward, and then the control block 9 will drive the fixing plate 8 to start moving upward synchronously, and then the fixing plate 8 will drive the limiting rod 10 to start moving upward synchronously. At this time, the connecting spring 11 begins to become a stretched state, and then the limiting rod 10 will move out from the inside of the second sliding groove 7 until the limiting rod 10 moves from the inside of the limiting hole 5 to the upper side of the mounting block 4. At this time, the clamping state is released, and then the staff moves the tool head 3 to the front side to remove the tool head 3 and the mounting block 4, and then the staff can replace the damaged tool head 3 and release the control block. 9, the connecting spring 11 will reset from the stretched state, pulling the fixing plate 8 and the control block 9 to reset, and the fixing plate 8 will drive the limit rod 10 to start resetting synchronously. After resetting, the lower side of the limit rod 10 will move to the inside of the second sliding groove 7. When installing a new tool head 3, you only need to pull the control block 9 to the upper side again. After the limit rod 10 moves to the inside of the first sliding groove 6, align the mounting block 4 with the mounting groove 2 and push the tool head 3 to the rear side, so that the mounting block 4 will move to the inside of the mounting groove 2, and then release the control block 9. It can be seen from the above that the limit rod 10 will reset, and the limit rod 10 after resetting will pass through the limit hole 5 and move to the inside of the second sliding groove 7, so that the tool head 3 completes the clamping limit with the tool handle 1.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A combined tool for chamfering the crescent root of a large-diameter ribbed steel bar, comprising a tool handle (1), characterized in that: The front side of the tool handle (1) is provided with a mounting groove (2), the front side of the tool handle (1) is provided with a tool head (3), the rear side of the tool head (3) is fixedly connected with a mounting block (4), and the mounting block (4) is adapted to the mounting groove (2); A limiting hole (5) is provided on the upper side of the mounting block (4), and a bottom wall of the limiting hole (5) extends out of the lower side of the mounting block (4); Wherein, a limited position clamping mechanism is provided on the tool handle (1), and the limited position clamping mechanism can connect the tool head (3) and the tool handle (1) together; Wherein, the position-limiting clamping mechanism comprises a first sliding groove (6), and the first sliding groove (6) is arranged on the top wall of the installation groove (2); The top wall of the first sliding groove (6) extends out of the upper side of the tool handle (1), and the lower side of the mounting groove (2) is provided with a second sliding groove (7); Wherein, the bottom wall of the second sliding groove (7) does not extend beyond the lower side of the tool handle (1); Wherein, a fixing plate (8) is arranged on the upper side of the tool handle (1), and a control block (9) is fixedly connected to the upper side of the fixing plate (8); The lower side of the fixed plate (8) is fixedly connected to a limiting rod (10), and the lower side of the limiting rod (10) slides and extends into the interior of the first sliding groove (6); The limiting rod (10) is matched with the limiting hole (5). The lower side of the limiting rod (10) slides and extends into the interior of the second sliding groove (7); Wherein, a connecting spring (11) is sleeved on the outer surface of a portion of the limiting rod (10) located on the upper side of the tool handle (1).

2. A combined tool for chamfering the crescent root of a large-diameter ribbed steel bar according to claim 1, characterized in that: The upper end of the connecting spring (11) is fixedly connected to the lower side of the fixing plate (8); The lower side of the connecting spring (11) is fixedly connected to the upper side of the tool handle (1).

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