Integral quick-change type reverse scraping cutter

Abstract

The utility model discloses an integral quick-change reverse scraping cutter which comprises a cutter bar, a cutter handle, an integral blade and a fixing pin. The cutter handle is connected with the cutter bar, the integrated blade is connected with the cutter handle, and the fixing pin is respectively connected with the cutter bar and the cutter handle. The groove and the notch are formed in the cutter bar, the pin hole is formed in the cutter handle, the cutter bar is inserted into the cutter handle, and the cutter bar and the cutter handle are fixed through the fixing pin, so that the quick-change reverse scraping cutter is realized, and the reverse counter bore machining efficiency is greatly improved; the overall structure is simple, reliability is high, and maintenance cost is low.

Description

Technical Field

[0001] The utility model belongs to the technical field of tool equipment, and in particular relates to an integral quick-change reverse scraping tool. Background Art

[0002] When processing some large shell and frame parts, some reverse countersinks need to be processed. At present, there are many types of reverse scraping tools, and the tool and tool bar are fastened with screws and slots, which is not convenient for quick tool change. The hydraulic locking tool bar is expensive and difficult to process reverse holes with larger diameters; the machine clamped blade wears faster when processing large-sized reverse holes, and the stiffness and strength of the blade decrease as the size of the blade increases, resulting in greater wear of the reverse scraping blade. Therefore, a reverse scraping tool that can be quickly replaced as a whole is needed.

[0003] For example, the Chinese patent with publication number CN220805737U discloses a quick-change reverse scraper tool, including a quick-change reverse scraper rod and a quick-change reverse scraper disc. The quick-change reverse scraper rod is provided with a mounting rod section for quickly disassembling and assembling the quick-change reverse scraper disc. The outer wall of the mounting rod section is provided with two mutually parallel primary limiting cut surfaces and two mutually parallel secondary limiting cut surfaces. The primary limiting cut surface intersects with the secondary limiting cut surface and is arranged at an acute angle. The quick-change reverse scraper disc is provided with a limiting waist hole. When installing, the quick-change reverse scraper disc is first positioned into the mounting rod section through the limiting waist hole and the two primary limiting cut surfaces. Then, when reaching the position of the secondary limiting cut surface, the quick-change reverse scraper rod is rotated so that the inner side wall of the limiting waist hole is fitted with the secondary limiting cut surface. In this way, the quick-change reverse scraper disc can be quickly installed on the quick-change reverse scraper rod. At the same time, the quick-change reverse scraper rod is also provided with a supporting rod section to avoid unstable operation caused by the quick-change reverse scraper rod being too long. However, the patent has a complex mechanical structure at the connection between the quick-change anti-scraper disc and the tool rod, and uses multiple limit steps, which are difficult to repair when damaged and have high costs. In addition, the use of multiple limit steps is not stable enough and is prone to wear. The tool rod protrudes from the disc, which limits the use scenarios of the tool. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an integral quick-change anti-scraping tool.

[0005] The utility model is realized through the following technical solutions.

[0006] The utility model provides an integral quick-change reverse scraping tool, comprising a tool rod, a tool handle, an integrated blade and a fixing pin; the tool handle is connected to the tool rod, the integrated blade is connected to the tool handle, and the fixing pin is respectively connected to the tool rod and the tool handle.

[0007] Preferably, a connecting section is provided at one end of the knife rod, and the knife rod is connected to the knife handle via the connecting section.

[0008] Preferably, a chamfer is provided on the connecting section, and the length of the connecting section is less than or equal to the length of the shank.

[0009] Preferably, a groove is provided on the knife rod, and the groove is connected to a fixing pin.

[0010] Preferably, a notch is provided on the knife rod, and the notch is connected to the groove.

[0011] Preferably, a pin hole is provided on the knife handle, and the pin hole is connected to a fixing pin.

[0012] Preferably, the fixing pin is connected to the groove, and the fixing pin is interference fitted in the pin hole.

[0013] Preferably, the knife handle is inlaid with an integrated blade by welding, and the cutting edge of the integrated blade faces the knife rod.

[0014] Preferably, one end of the knife handle is connected to the knife rod, and the other end is connected to the integrated blade.

[0015] Preferably, the knife handle is an integrated hollow cylindrical structure, and the knife rod is an integrated cylindrical structure.

[0016] The beneficial effects of the utility model are:

[0017] 1. Grooves and notches are set on the tool bar, pin holes are set on the tool handle, the tool bar is inserted into the tool handle, and the tool bar and the tool handle are fixed by a fixing pin, so as to realize a quick-change reverse scraping tool and greatly improve the efficiency of reverse countersinking.

[0018] 2. The integrated design of the tool bar and the tool handle enhances the structural rigidity and hardness, and realizes the reverse scraping processing of large-sized holes; the tool bar connecting section is less than or equal to the tool handle length to ensure that the tool bar does not protrude from the tool handle, and the reverse scraping tool has a wider application range and stronger applicability; the integrated blade is set on the tool handle in the opposite direction of the tool bar to increase the contact area between the integrated blade and the tool handle, increase the welding area, and make the connection between the integrated blade and the tool handle more reliable.

[0019] 3. The overall structure is simple, the reliability is strong and the maintenance cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the reverse scraper provided by the embodiment of the utility model;

[0021] Figure 2 It is a schematic diagram of the knife bar structure provided by an embodiment of the utility model;

[0022] Figure 3 It is a schematic diagram of the structure of a knife handle provided by an embodiment of the utility model.

[0023] In the figure: 1- knife bar, 2- knife handle, 3- integrated blade, 4- fixing pin, 5- connecting section, 6- groove, 7- notch, 8- pin hole. DETAILED DESCRIPTION

[0024] The technical solution of the utility model is further described below, but the scope of protection required is not limited to the description.

[0025] Embodiment 1:

[0026] like Figure 1 As shown, the utility model provides an integrated quick-change reverse scraping tool, comprising a tool rod 1, a tool handle 2, an integrated blade 3 and a fixing pin 4; the tool handle 2 is connected to the tool rod 1, the integrated blade 3 is connected to the tool handle 2, and the fixing pin 4 is respectively connected to the tool rod 1 and the tool handle 2.

[0027] like Figure 2 As shown, a connecting section 5 is provided at one end of the knife rod 1 , and the knife rod 1 is connected to the knife handle 2 via the connecting section 5 .

[0028] The connecting section 5 is used to connect the tool handle 2 , and the outer diameter of the connecting section 5 is less than or equal to the inner diameter of the tool handle 2 , so that the shank 1 can be inserted into the tool handle 2 .

[0029] The connecting section 5 is provided with a chamfer, and the length of the connecting section 5 is less than or equal to the length of the shank 2 .

[0030] The chamfer makes it easy to insert the connecting section 5 into the handle 2, so that the shank 1 and the handle 2 are connected; the length of the connecting section 5 is less than or equal to the length of the handle 2, so that the shank 1 does not protrude from the handle 2, making the overall length shorter and having a wider range of applications.

[0031] The knife bar 1 is provided with a groove 6 , and the groove 6 is connected to the fixing pin 4 .

[0032] The groove 6 is used to connect the fixing pin 4, and the fixing pin 4 is stuck in the groove 6. Under the action of the fixing pin 4, the relative position of the knife bar 1 and the knife handle 2 is limited by the fixing pin 4. When the knife bar 1 rotates, the knife handle 2 is driven to rotate.

[0033] The knife rod 1 is provided with a notch 7 , and the notch 7 is connected to the groove 6 .

[0034] The notch 7 is connected to the groove 6 , and the notch 7 is a passage for the fixing pin 4 to enter the groove 6 , so as to ensure the entry of the integral tool handle 2 and ensure a good connection between the tool handle 2 and the tool rod 1 .

[0035] like Figure 3 As shown, a pin hole 8 is provided on the knife handle 2 , and the pin hole 8 is connected to the fixing pin 4 .

[0036] The pin hole is used to fix the pin 4 to connect the tool handle 2.

[0037] The fixing pin 4 is connected to the groove 6 , and the fixing pin 4 is interference fitted in the pin hole 8 .

[0038] The fixing pin 4 is fitted in the pin hole 8 by interference fit, which is convenient for the connection of the knife rod 1; at the same time, when the fixing pin 4 is damaged, it is easy to replace and repair.

[0039] The handle 2 is inlaid with an integrated blade 3 by welding, and the blade edge of the integrated blade 3 faces the shank 1 .

[0040] The welding and inlaying ensure the stability of the connection between the integrated blade 3 and the handle 2, and the blade edge of the integrated blade 3 is oriented toward the handle 1 to achieve reverse scraping processing.

[0041] One end of the knife handle 2 is connected to the knife rod 1 , and the other end is connected to the integrated blade 3 .

[0042] The integrated blade 3 is arranged on the handle 2 in the opposite direction to the shank 1, so as to increase the contact area between the integrated blade 3 and the handle 2 and the welding area, thereby making the connection between the integrated blade 3 and the handle 2 more reliable.

[0043] The knife handle 2 is an integrated hollow cylindrical structure, and the knife rod 1 is an integrated cylindrical structure.

[0044] The integrated structure makes the back-scraping tool more rigid and hard, making it more suitable for back-scraping processing of large-sized holes.

[0045] Working principle of the anti-scraping tool:

[0046] First, fit the fixing pin 4 into the pin hole 8 on the tool handle 2 by interference fit. Before processing, extend the tool bar 1 into the processing position, then insert the connecting section 5 of the tool bar 1 into the tool handle 2, and the fixing pin 4 enters the tool bar 1 through the notch 7. Rotate the tool handle 90°, and the fixing pin 4 enters the groove 6, and fits tightly with the groove 6 to fix the tool handle 2.

[0047] The tool bar 1 drives the tool handle 2, and the integrated tool 3 is welded and embedded on the tool handle 2, so that the integrated tool 3 moves to perform reverse scraping processing;

[0048] After the processing is completed, the tool holder 2 rotates 90 degrees in the opposite direction and withdraws from the tool bar 1, completing the quick-change reverse scraping process.

[0049] Embodiment 2:

[0050] This embodiment is improved on the basis of Embodiment 1. The difference between this embodiment and Embodiment 1 is that:

[0051] In this embodiment, one end of the knife handle 2 is connected to the knife rod 1 , and the integrated blade 3 is connected to the same end of the knife handle 2 and the knife rod 1 .

[0052] When the processing conditions are relatively harsh, the length of the handle 2 is required to be shorter, and the processing strength requirement is not high, the integrated blade 3 and the shank 1 can be set at the same end of the handle 2. The handle 2 is shorter and has a wider range of applications.

[0053] In this embodiment, the notch 7 is eliminated, and the fixing pin 4 is not fixed on the shank 2. The shank 1 is first inserted into the shank 2, and then the fixing pin 4 is passed through the pin hole 8 and the groove 6 to connect the shank 1 and the shank 2 respectively.

[0054] The blade rod 1 has no notch 7, which makes the structure of the blade rod more stable, but the speed of connecting the blade rod 1 and the handle 2 is reduced.

[0055] The utility model provides a groove 6 and a notch 7 on the tool rod 1, and a pin hole 8 on the tool handle 2. The tool rod 1 is inserted into the tool handle 2, and the tool rod 1 and the tool handle 2 are fixed by a fixing pin 4, so as to realize a quick-change reverse scraping tool, and greatly improve the efficiency of processing reverse countersinking. The tool rod 1 and the tool handle 2 are designed as an integrated whole, so as to enhance the structural rigidity and hardness, and realize the reverse scraping processing of large-size holes. The connecting section 5 of the tool rod 1 is less than or equal to the length of the tool handle 2, so as to ensure that the tool rod 1 does not protrude from the tool handle 2, and the reverse scraping tool has a wider application range and stronger applicability. The integrated blade 3 is arranged on the tool handle 2 in the opposite direction to the tool rod 1, so as to increase the contact area between the integrated blade 3 and the tool handle 2, increase the welding area, and make the connection between the integrated blade 3 and the tool handle 2 more reliable. The overall structure is simple, the reliability is strong, and the maintenance cost is low.

Claims

1. An integral quick-change reverse scraper tool, characterized in that: The knife comprises a knife bar (1), a knife handle (2), an integrated blade (3) and a fixing pin (4); the knife handle (2) is connected to the knife bar (1), the integrated blade (3) is connected to the knife handle (2), and the fixing pin (4) is respectively connected to the knife bar (1) and the knife handle (2); a connecting section (5) is provided at one end of the knife bar (1), and the knife bar (1) is connected to the knife handle (2) via the connecting section (5); a groove (6) is provided on the knife bar (1), and the groove (6) is connected to the fixing pin (4); a notch (7) is provided on the knife bar (1), and the notch (7) is connected to the groove (6); a pin hole (8) is provided on the knife handle (2), and the pin hole (8) is connected to the fixing pin (4).

2. An integral quick-change reverse scraper tool as claimed in claim 1, characterized in that: The connecting section (5) is provided with a chamfer, and the length of the connecting section (5) is less than or equal to the length of the knife handle (2).

3. The integral quick-change reverse scraper tool according to claim 1, characterized in that: The fixing pin (4) is connected to the groove (6), and the fixing pin (4) is interference fitted in the pin hole (8).

4. The integral quick-change reverse scraper tool according to claim 1, characterized in that: The knife handle (2) is inlaid with an integrated blade (3) by welding, and the blade edge of the integrated blade (3) faces the knife rod (1).

5. An integral quick-change reverse scraper tool as claimed in claim 4, characterized in that: One end of the knife handle (2) is connected to the knife rod (1), and the other end is connected to the integrated blade (3).

6. The integral quick-change reverse scraper tool according to claim 1, characterized in that: The knife handle (2) is an integrated hollow cylindrical structure, and the knife rod (1) is an integrated cylindrical structure.

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