Multi-cutting-edge T-shaped cutter with lengthened handle

Abstract

The utility model belongs to the technical field of T-shaped knives, and particularly relates to a multi-cutting-edge T-shaped knife with a lengthened handle, which comprises a first knife handle, a lengthened rod arranged in the first knife handle, a second knife handle arranged on the outer side of one end of the lengthened rod, telescopic holes arranged on the end faces of one ends of the first knife handle and the second knife handle, and sliding grooves arranged on the inner walls of the telescopic holes. A telescopic spring is fixed to the outer surface of the fixing block, a top plate is fixed to one end of the telescopic spring, and fixing holes are formed in the outer surfaces of one ends of the first cutter handle and the second cutter handle. According to the T-shaped groove machining tool, the overall length of the tool handle can be increased conveniently through sliding between the lengthening rod and the first tool handle, the overall length of the tool handle can be further increased conveniently through sliding between the lengthening rod and the second tool handle, and T-shaped grooves with different depths can be machined; the top plate and the telescopic spring play a buffering role and an abutting role in the sliding process of the lengthening rod, the first cutter handle and the second cutter handle.

Description

Technical Field

[0001] The utility model relates to a multi-blade T-shaped knife, in particular to a multi-blade T-shaped knife with an extended handle, belonging to the technical field of T-shaped knives. Background Art

[0002] A milling cutter mainly refers to a rotating tool with one or more teeth used for milling. When the milling cutter is working, each tooth cuts off the excess of the workpiece intermittently in turn. It is mainly used to process planes, steps, grooves, forming surfaces and cut off workpieces on milling machines. T-type milling cutters are mainly used to process T-slots.

[0003] In the prior art, a multi-edge T-shaped diamond milling cutter disclosed in announcement number CN216065714U includes a milling cutter rod and a milling cutter body, the milling cutter body is installed on the upper end of the milling cutter rod, the lower part of the milling cutter rod is an integrated conical tool holder, the lower end of the conical tool holder is processed with a milling flat end, and the milling flat end is processed with a tool withdrawal hole, the conical tool holder can be directly connected to the machine tool spindle for easy installation, and the design of the tool withdrawal hole facilitates the disassembly of the milling cutter rod.

[0004] When the above technical solution is in use, the milling cutter rod and the tapered tool holder are integrated, and are connected to the machine tool spindle through the tapered tool holder. When disassembling, the milling cutter rod can be easily disassembled through the tool withdrawal hole on the milling flat end. However, since the milling cutter rod and the tapered tool holder are an integrated structure, the length of the tool holder is fixed. When the T-shaped diamond milling cutter needs to process a deeper T-slot, the tool holder of fixed length will not be able to process it. In view of this, a multi-blade T-shaped cutter with an extended handle is provided to overcome the above-mentioned defects. Utility Model Content

[0005] The utility model provides a multi-blade T-shaped cutter with an extended handle to solve the problem that the milling cutter rod and the conical cutter handle are an integrated structure, the length of the cutter handle is fixed, and when the T-shaped diamond milling cutter needs to process a deeper T-shaped slot, the cutter handle with a fixed length cannot process it.

[0006] The utility model achieves the above-mentioned purpose through the following technical scheme: a multi-blade T-shaped knife with an extended handle, comprising a handle 1, an extended rod is arranged inside the handle 1, a handle 2 is arranged outside one end of the extended rod, a telescopic hole is opened on the end surface of the handle 1 and one end of the handle 2, a sliding groove is opened on the inner wall of the telescopic hole, a fixing block is arranged at one end of the telescopic hole, a telescopic spring is fixed on the outer surface of the fixing block, and a top plate is fixed at one end of the telescopic spring;

[0007] The outer surfaces of one end of the tool handle 1 and the tool handle 2 are both provided with fixing holes, the internal threads of the fixing holes are connected with fixing bolt 1, the outer surface of the extension rod is provided with a plurality of adjustment holes, the outer walls of both ends of the extension rod are fixed with sliders, and the other end of the tool handle 1 is provided with a clamping position.

[0008] As a further solution of the utility model: the extension rod forms a sliding structure with the knife handle through the sliding groove and the sliding block, and the top plate forms a telescopic structure with the fixed block through the telescopic spring.

[0009] As a further solution of the utility model: a slot is provided at the other end of the second knife handle, a threaded hole is provided on the end surface of the other end of the second knife handle, a fixing bolt is connected to the internal thread of the threaded hole, and a cutter head is provided on the outer side of the other end of the second knife handle.

[0010] As a further solution of the utility model: a mounting hole is opened inside the cutter head, and a clamping block is fixed on the inner wall of the mounting hole.

[0011] As a further solution of the utility model: the outer wall of the cutter head is provided with a cutter groove, and the inner wall of the cutter groove is provided with a screw hole.

[0012] As a further solution of the utility model: a blade is arranged inside the knife groove, and a mounting bolt is connected to the inner thread of the screw hole.

[0013] As a further solution of the utility model: the cutter head forms a clamping structure with the second cutter handle through the clamping block and the clamping groove, and the blade and the cutter head are movably connected.

[0014] The beneficial effects of the utility model are:

[0015] 1. The utility model facilitates to extend the overall length of the knife handle by sliding between the extension rod and the knife handle 1, and facilitates to further extend the overall length of the knife handle by sliding between the extension rod and the knife handle 2. T-slots of different depths are processed, and the top plate and the telescopic spring play a buffering and abutting role in the process of sliding between the extension rod and the knife handle 1 and the knife handle 2;

[0016] 2. The utility model facilitates the clamping connection between the cutter head and the cutter handle through the clamping block and the clamping groove, thereby avoiding rotation between the two and preventing the cutter head from rotating when processing the workpiece, thereby affecting the processing effect. The blade and the cutter head are movably connected, so that the damaged blade can be easily replaced when the blade is damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the knife bar of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the cutter head of the utility model;

[0020] Figure 4 It is a schematic diagram of the internal structure of the knife bar of the utility model.

[0021] In the figure: 1. Tool handle 1; 2. Clamping position; 3. Telescopic hole; 4. Fixing block; 5. Telescopic spring; 6. Top plate; 7. Extension rod; 8. Adjustment hole; 9. Tool handle 2; 10. Slide groove; 11. Sliding block; 12. Mounting bolt; 13. Fixing hole; 14. Fixing bolt 1; 15. Slot; 16. Threaded hole; 17. Fixing bolt 2; 18. Tool head; 19. Mounting hole; 20. Block; 21. Tool groove; 22. Blade; 23. Screw hole. DETAILED DESCRIPTION

[0022] 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. Embodiment 1

[0023] like Figures 1 to 4 As shown, a multi-blade T-shaped knife with an extended handle comprises a handle 1, an extension rod 7 is arranged inside the handle 1, a handle 2 9 is arranged outside one end of the extension rod 7, a telescopic hole 3 is provided on the end surface of the handle 1 and one end of the handle 2 9, a slide groove 10 is provided on the inner wall of the telescopic hole 3, a fixing block 4 is provided at one end of the telescopic hole 3, a telescopic spring 5 is fixed on the outer surface of the fixing block 4, a top plate 6 is fixed at one end of the telescopic spring 5, and the handle 1 and the handle 2 9 are both provided with telescopic holes 3 inside, and the slide groove 10, the telescopic spring 5 and the top plate 6 inside the telescopic hole 3 facilitate the sliding between the extension rod 7, the slider 11 and the slide groove 10 and the telescopic hole 3, so that the distance between the handle 1 and the handle 2 9 is lengthened, thereby achieving the purpose of lengthening the overall length of the handle;

[0024] The outer surfaces of one end of the knife handle 1 and the knife handle 2 9 are provided with fixing holes 13, and the internal threads of the fixing holes 13 are connected with fixing bolts 14. The outer surface of the extension rod 7 is provided with a plurality of adjustment holes 8, and the outer walls of both ends of the extension rod 7 are fixed with sliders 11. The other end of the knife handle 1 is provided with a clamping position 2, and the knife handle 1, the knife handle 2 9 and the extension rod 7 with adjusted lengths can be fixed through the adjusting holes 8, the fixing holes 13 and the fixing bolts 14. Embodiment 2

[0025] In addition to all the technical features of the first embodiment, this embodiment also includes:

[0026] The extension rod 7 forms a sliding structure with the knife handle 1 through the sliding groove 10 and the slider 11, and the top plate 6 forms a telescopic structure with the fixed block 4 through the telescopic spring 5. The extension rod 7 can slide with the knife handle 1 and the knife handle 2 9 through the sliders 11 at both ends. The sliding between the extension rod 7 and the knife handle 1 is convenient for extending the overall length of the knife handle, and the sliding between the extension rod 7 and the knife handle 2 9 is convenient for further extending the overall length of the knife handle. T-slots of different depths are processed, and the top plate 6 and the telescopic spring 5 play a buffering and abutting role in the process of the extension rod 7 sliding with the knife handle 1 and the knife handle 2 9.

[0027] A slot 15 is provided at the other end of the knife handle 29, and a threaded hole 16 is provided on the end face of the other end of the knife handle 29. The internal thread of the threaded hole 16 is connected with a fixing bolt 2 17. A cutter head 18 is provided on the outer side of the other end of the knife handle 29, and the cutter head 18 can be fixed to one end of the knife handle 29 by the fixing bolt 2 17.

[0028] A mounting hole 19 is provided inside the cutter head 18, and a clamping block 20 is fixed to the inner wall of the mounting hole 19. The mounting hole 19 and the clamping block 20 facilitate the cutter head 18 to be clamped with the clamping slot 15, thereby preventing the cutter head 18 from rotating when processing the workpiece and affecting the processing effect.

[0029] The outer wall of the cutter head 18 is provided with a cutter groove 21 , and the inner wall of the cutter groove 21 is provided with a screw hole 23 , so that the cutter blade 22 can be easily installed through the cutter groove 21 .

[0030] A blade 22 is arranged inside the blade groove 21 , and a mounting bolt 12 is threadedly connected to the inner part of the screw hole 23 . The damaged blade 22 can be easily replaced through the mounting bolt 12 and the screw hole 23 .

[0031] The cutter head 18 forms a locking structure with the tool handle 29 through the clamping block 20 and the clamping slot 15. The blade 22 and the cutter head 18 are movably connected. The clamping block 20 and the clamping slot 15 facilitate the cutter head 18 and the tool handle 29 to prevent rotation between the two, thereby preventing the cutter head 18 from rotating when processing the workpiece and affecting the processing effect. The blade 22 and the cutter head 18 are movably connected, which facilitates the replacement of the damaged blade 22 when the blade 22 is damaged.

[0032] Working principle: Before using the multi-blade T-shaped knife, place the blade 22 into the knife groove 21, and then fix the blade 22 through the screw hole 23 and the mounting bolt 12. After the blade 22 is fixed, install the cutter head 18 into the slot 15 at one end of the knife handle 29 through the mounting hole 19 and the clamping block 20, and then fix the cutter head 18 through the threaded hole 16 with the fixing bolt 217 to prevent the cutter head 18 from falling off during use. After the cutter head 18 and the blade 22 are installed, move the knife handle 1 according to the depth of the T-shaped slot, so that the slider 11 at one end of the extension rod 7 slides in the slide groove 10 on the inner wall of the telescopic hole 3 of the knife handle 1, and the extension rod 7 is fixed by the fixing hole 19. The telescopic spring 5 and the top plate 6 on the fixed block 4 move slowly so that the adjusting hole 8 at one end of the extension rod 7 corresponds to the fixing hole 13 on the tool handle 1, and then it is fixed by the fixing bolt 14 to adjust the overall length of the tool handle. When the depth of the processed T-slot is too deep, the tool handle 9 is slid again, and the extension rod 7 moves inside the tool handle 9 through the slider 11 and the slide groove 10 so that the adjusting hole 8 at the other end of the extension rod 7 corresponds to the fixing hole 13 on the tool handle 9, and then it is fixed. The length of the tool handle can be further lengthened to process deeper T-slots. After adjustment, the tool handle is installed on the fixture of the machine tool through the clamping position 2.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A multi-edged T-shaped knife with an extended handle, comprising a handle (1), characterized in that: An extension rod (7) is arranged inside the knife handle 1 (1), and a knife handle 2 (9) is arranged on the outer side of one end of the extension rod (7). End surfaces of the knife handle 1 (1) and one end of the knife handle 2 (9) are provided with telescopic holes (3), and the inner wall of the telescopic hole (3) is provided with a sliding groove (10). A fixing block (4) is arranged at one end of the telescopic hole (3), and a telescopic spring (5) is fixed on the outer surface of the fixing block (4), and a top plate (6) is fixed at one end of the telescopic spring (5); The outer surfaces of one end of the knife handle 1 (1) and the knife handle 2 (9) are each provided with a fixing hole (13), the inner thread of the fixing hole (13) is connected with a fixing bolt 1 (14), the outer surface of the extension rod (7) is provided with a plurality of adjustment holes (8), the outer walls of both ends of the extension rod (7) are each fixed with a sliding block (11), and the other end of the knife handle 1 (1) is provided with a clamping position (2).

2. A multi-edged T-shaped knife with an extended handle according to claim 1, characterized in that: The extension rod (7) forms a sliding structure with the tool handle (1) via a sliding groove (10) and a sliding block (11), and the top plate (6) forms a telescopic structure with the fixed block (4) via a telescopic spring (5).

3. A multi-edged T-shaped knife with an extended handle according to claim 1, characterized in that: The other end of the second knife handle (9) is provided with a slot (15), the end surface of the other end of the second knife handle (9) is provided with a threaded hole (16), the inner thread of the threaded hole (16) is connected with a fixing bolt (17), and the outer side of the other end of the second knife handle (9) is provided with a knife head (18).

4. A multi-edged T-shaped knife with an extended handle according to claim 3, characterized in that: A mounting hole (19) is provided inside the cutter head (18), and a clamping block (20) is fixed to the inner wall of the mounting hole (19).

5. A multi-edged T-shaped knife with an extended handle according to claim 4, characterized in that: The outer wall of the cutter head (18) is provided with a cutter groove (21), and the inner wall of the cutter groove (21) is provided with a screw hole (23).

6. A multi-edged T-shaped knife with an extended handle according to claim 5, characterized in that: A blade (22) is arranged inside the knife groove (21), and a mounting bolt (12) is threadedly connected inside the screw hole (23).

7. A multi-edged T-shaped knife with an extended handle according to claim 6, characterized in that: The cutter head (18) forms a clamping structure with the second cutter handle (9) via a clamping block (20) and a clamping groove (15), and the blade (22) is movably connected to the cutter head (18).

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