Adjusting structure for T-series blade type reamer

Abstract

The utility model belongs to the technical field of machining tools, and particularly provides an adjusting structure for a T-series blade type reamer, which comprises a reamer rod, a blade, a screw, a cylindrical pin, a diameter positioning expansion ring, an expansion ring positioning pin, an expansion pin and a hexagon socket screw, a cylindrical hole and a threaded hole are formed in the reamer rod; the blades are arranged on the end face of the reamer rod through screws, an inner conical face is arranged on an inner ring of the diameter positioning expansion ring, a wear-resisting area and an elastic deformation area are arranged on an outer ring of the diameter positioning expansion ring, a cone frustum and a cylindrical platform are arranged on the expansion pin, and a bolt counter bore and a bolt via hole are formed in the expansion pin. Expansion pins penetrate through the diameter positioning expansion rings to be inserted into the cylindrical holes, hexagon socket screws penetrate through the expansion pins to be matched with the threaded holes, and the blades make contact with the abrasion-resistant areas. The diameter positioning expansion ring is installed on the end face of the reamer rod through the inside hexagonal bolt, the cone frustum on the expansion ring positioning pin is matched with the inner conical surface in an extrusion mode to achieve adjustment of the diameter of the diameter positioning expansion ring, the abrasion-resistant area makes contact with the blade, and therefore the diameter of a cutter can be indirectly adjusted.

Description

TECHNICAL FIELD

[0001] The utility model relates to machining tool technical field, especially a kind of adjusting structure for T series blade type reamer. BACKGROUND

[0002] Compared with traditional tool, high-precision adjustable indexable blade type reamer system has incomparable advantage.For whole reamer, although it can be directly used without installing blade, but when tool wears, blade must be re-welded to continue to use, and the cost is higher.For boring cutter, although it can be adjusted within a certain range, only blade needs to be replaced when tool wears, and the use cost is low, but it is single-edge cutting, and the processing efficiency is lower than reamer, and the processing life is also lower than reamer, and blade is replaced every time, which can cause parts to be scrapped.

[0003] Therefore, it is necessary to design a kind of adjusting structure for T series blade type reamer to solve the above technical problems. CONTENT OF UTILITY MODEL

[0004] In view of the above problems existing in prior art, the utility model provides an adjusting structure for T series blade type reamer, which can realize the adjustment of tool diameter and solve the above technical problems.

[0005] Technical scheme: in order to realize the above object, the utility model provides an adjusting structure for T series blade type reamer, which comprises reamer rod, blade, screw, cylindrical pin, diameter positioning expander ring, expander ring positioning pin, expander pin and internal hexagonal bolt.

[0006] The inside of the reamer rod is provided with cylindrical hole and threaded hole;The blade is arranged on the end face of the reamer rod by screw;The inner ring of the diameter positioning expander ring is provided with inner taper surface, and the outer ring is provided with wear-resistant area and elastic deformation area;The expander pin is provided with conical platform and cylindrical platform;The inside of the expander pin is provided with bolt counterbore and bolt through hole.

[0007] The expander pin is inserted into the cylindrical hole through the diameter positioning expander ring, the internal hexagonal bolt is matched with the threaded hole through the expander pin, and the blade is in contact with the wear-resistant area.

[0008] The diameter positioning expander ring is installed on the end face of the reamer rod by internal hexagonal bolt, the conical platform of the expander ring positioning pin is in extrusion fit with the inner taper surface to realize the adjustment of the diameter of the diameter positioning expander ring, and the wear-resistant area is in contact with the blade, so that the size of tool diameter can be indirectly adjusted.

[0009] Further, the conical platform on the expansion pin is matched with the inner conical surface, the cylindrical platform is matched with the cylindrical hole, and the inner hexagonal bolt is screwed into the threaded hole through the bolt counterbore and the bolt through hole.

[0010] Further, the blade is a three-edged blade, the blade is provided with a blade front end surface, a blade rear end surface, a blade lower end surface, a circular arc edge, a rake surface, a relief surface and a cutting edge formed by the rake surface and the relief surface, and the inside of the blade is provided with a screw counterbore and a screw through hole.

[0011] The blade rear end surface is attached to the end surface of the reamer rod, and the blade lower end surface is in contact with the wear-resistant area.

[0012] Further, the end surface of the reamer rod is provided with a cylindrical pin hole, a threaded mounting hole and an expansion ring positioning pin hole.

[0013] The screw is matched with the threaded mounting hole through the screw counterbore and the screw through hole, the cylindrical pin is fixed in the cylindrical pin hole through interference fit, and one end of the expansion ring positioning pin is interference fit mounted in the expansion ring positioning pin hole, and the other end is matched with the diameter positioning expansion ring.

[0014] Further, the head of the screw is provided with a keyway, the lower part is provided with a thread, and the transition position is provided with a conical platform counter sink, which can be matched with the stress action surface.

[0015] Further, the left side of the reamer rod is provided with a connecting flange. The reamer rod is connected with the tool handle or the main shaft of the machine tool through the connecting flange.

[0016] Further, a plurality of chip pockets are arranged on the right side of the reamer rod in a non-equal angle manner, and the chip pockets are provided with cooling water holes.

[0017] Compared with the prior art, the adjusting structure for the T series blade type reamer has the following beneficial effects:

[0018] 1. The tool has a diameter positioning expansion ring at the front end, the force between the conical platform on the expansion pin and the inner conical surface of the diameter positioning expansion ring is adjusted by rotating the inner hexagonal bolt, so that the elastic deformation area on the diameter positioning expansion ring is deformed, and therefore the diameter of the diameter positioning expansion ring can be adjusted, so that the user can adjust the size deviation according to the actual machining.

[0019] 2. The cutter rod of the utility model can be connected with the tool handle or the main shaft of the machine tool according to the user's demand, and the left connecting end can be designed as a structure corresponding to the connection of the tool handle or the main shaft of the machine tool, thereby providing convenience for the user.

[0020] 3. The cutter blade has a special design, and each cutter blade has three cutting edges, so that the durability of the indexable cutter blade can be fully utilized, the surface machining quality of the workpiece can be met, and the production efficiency is improved. DRAWINGS

[0021] Figure 1 is a structural schematic view of the adjusting structure of the T-series cutter blade reamer according to the utility model;

[0022] Figure 2 is a structural schematic view of the cutter rod according to the utility model;

[0023] Figure 3 is a sectional view of the cutter rod according to the utility model;

[0024] Figure 4 is a structural schematic view of the cutter blade according to the utility model;

[0025] Figure 5 is a schematic view of the rake face and the relief face of the cutter blade according to the utility model;

[0026] Figure 6 is a sectional view of the cutter blade according to the utility model;

[0027] Figure 7 is a structural schematic view of the screw according to the utility model;

[0028] Figure 8 is a structural schematic view of the diameter positioning expansion ring according to the utility model;

[0029] Figure 9 is a sectional view of the diameter positioning expansion ring according to the utility model;

[0030] Figure 10 is a structural schematic view of the expansion pin according to the utility model;

[0031] Figure 11 is a sectional view of the expansion pin according to the utility model;

[0032] Figure 12 is an installation schematic view of the expansion pin according to the utility model;

[0033] Figure 13 is an installation schematic view of the cutter blade according to the utility model.

[0034] In the diagram: 100, Reamer shank; 101, Connecting flange; 102, Chip groove; 103, Cooling water hole; 104, Cylindrical pin hole; 105, Threaded mounting hole; 106, Threaded hole; 107, Cylindrical hole; 108, Expansion ring locating pin hole; 200, Insert; 201, Insert tip plane; 202, Insert rear end plane; 203, Insert lower end plane; 204, Circular cutting edge; 205, Rake face; 206, Flank face; 207, Cutting edge; 208, Screw countersunk hole; 209, Screw through hole; 210, Force-bearing surface; 300, Screw; 301, Torx groove; 302, Frustum countersunk head; 303, Thread; 400, Cylindrical pin; 500, Diameter locating expansion ring; 501, Inner conical surface; 502, Wear-resistant zone; 503, Elastic deformation zone. 600. Socket head cap screw; 700. Expansion pin; 701. Frustum cone; 702. Frustum cylinder; 703. Countersunk bolt hole; 704. Through hole bolt; 800. Expansion ring locating pin. Detailed Implementation

[0035] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings, so that the advantages and features of this utility model can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of this utility model. The embodiments of this utility model include the following parts:

[0036] like Figures 1-13 As shown, an adjustment structure for a T-series blade reamer includes a reamer rod 100, a blade 200, a screw 300, a cylindrical pin 400, a diameter positioning expansion ring 500, an expansion ring positioning pin 800, an expansion pin 700, and an internal hex bolt 600.

[0037] The reamer rod 100 has a cylindrical hole 107 and a threaded hole 106 inside; the blade 200 is mounted on the end face of the reamer rod 100 by a screw 300; the inner ring of the diameter positioning expansion ring 500 has an inner conical surface 501, and the outer ring has a wear-resistant area 502 and an elastic deformation area 503; the expansion pin 700 has a truncated cone 701 and a truncated cylinder 702, and the expansion pin 700 has a bolt countersunk hole 703 and a bolt through hole 704 inside;

[0038] The expansion pin 700 passes through the diameter positioning expansion ring 500 and is inserted into the cylindrical hole 107. The internal hex bolt 600 passes through the expansion pin 700 and engages with the threaded hole 106. The blade 200 contacts the wear-resistant area 502.

[0039] Among them, such as Figure 12 As shown, the truncated cone 701 on the expansion pin 700 mates with the inner cone surface 501, the cylindrical truncated cone 702 mates with the cylindrical hole 107, and the internal hexagonal bolt 600 passes through the bolt countersunk hole 703 and the bolt through hole 704 and is screwed into the threaded hole 106.

[0040] As shown in Figures 4-6 and Figure 13 , the blade 200 is a triangular blade, the blade 200 is provided with a blade front end face 201, a blade rear end face 202, a blade lower end face 203, a circular arc blade 204, a rake face 205, a relief face 206, and a cutting edge 207 formed by the rake face 205 and the relief face 206, the inside of the blade 200 is provided with a screw counterbore 208 and a screw through hole 209; the excess of the screw counterbore 208 and the screw through hole 209 is provided with a stress action surface 210;

[0041] The blade rear end face 202 is in contact with the end face of the reamer rod 100, and the blade lower end face 203 is in contact with the wear-resistant area 502. In this embodiment, each blade 100 has three cutting edges 207, which can fully play the durability of the indexable blade, and can meet the surface processing quality of the workpiece and improve the production efficiency.

[0042] As shown in Figure 2 , 3 , the end face of the reamer rod 100 is provided with a cylindrical pin hole 104, a threaded mounting hole 105, and an expansion ring positioning pin hole 108;

[0043] The screw 300 passes through the screw counterbore 208 and the screw through hole 209 and cooperates with the threaded mounting hole 105, the cylindrical pin 400 is fixed in the cylindrical pin hole 104 by interference fit, one end of the expansion ring positioning pin 800 is interference fit installed in the expansion ring positioning pin hole 108, and the other end cooperates with the diameter positioning expansion ring 500.

[0044] As shown in Figure 7 , the head of the screw 300 is provided with a keyway 301, the lower part is provided with a thread 303, and the two are provided with a conical counterbore 302 at the transition position, which can cooperate with the stress action surface 210.

[0045] Please refer to Figure 2 , the left side of the reamer rod 100 is provided with a connecting flange 101. The left connecting flange 101 can be designed as a structure corresponding to the connection of the tool handle or the main shaft of the machine tool according to the user's demand. A plurality of chip pockets 102 are arranged on the right side of the reamer rod 100 in a non-uniform angle, and the chip pockets 102 are provided with cooling water holes 103. The chip pockets 102 can smoothly discharge the waste chips during cutting of the tool, and the cooling water holes 103 are used to guide the cooling water to cool the tool.

[0046] The adjusting structure for the T series blade reamer provided by the embodiment comprises a diameter positioning expansion ring 500, an inner taper 501 arranged on the diameter positioning expansion ring 500, a conical platform 701 arranged on an expansion pin 700, a cylindrical platform 702 corresponding to a cylindrical hole 107 of a reamer rod 100, and an inner hexagonal bolt 600. The inner hexagonal bolt 600 is screwed into the threaded hole 105 through the bolt through hole 704, so that the diameter positioning expansion ring 500 is mounted on the end surface of the reamer rod 100. The rear end plane 202 of the blade is attached to the end surface of the reamer rod 100, and the lower end plane 203 of the blade is in contact with the wear-resistant area 502 on the diameter positioning expansion ring 500. By rotating the inner hexagonal bolt 600, the conical platform 701 applies and releases force to the inner taper 501, and the elastic deformation area 503 is deformed, so that the diameter of the tool is changed. The expansion ring positioning pin 800 is installed in the expansion ring positioning pin hole 108 through interference fit, so as to prevent the diameter positioning expansion ring 500 from rotating. The blade 200 is internally provided with a screw counterbore 208 and a screw through hole 209, and the reamer rod 100 is internally provided with a threaded hole 105. At this time, the center of the threaded hole 105 and the center of the screw through hole 209 are in an eccentric state. The thread 303 on the screw 300 is installed corresponding to the threaded hole 105, a wrench is used to act on the torx groove 301, at this time, the conical platform counterbore 302 acts on the stress surface 210, the torx screw 300 generates a fastening force to fasten the blade 200 on the reamer rod 100. The reamer rod 100 is internally provided with a cylindrical pin hole 104, and the cylindrical pin 400 is fixed in the cylindrical pin hole 104 through interference fit. At this time, the circumferential direction of the adjustable and indexable blade reamer system can be controlled, and a certain torque can be resisted.

[0047] In addition, due to the poor use condition of the existing machine tool, the machine tool spindle runout is large, the on-site environment temperature difference is obvious, some materials are prone to machining deformation, and the hole diameter and the tool setting size are inconsistent. According to such working conditions, diameter positioning blocks with different tolerances are designed for users to select; the hole precision requirement of machining is very high, so multiple diameter positioning blocks can be used as backup, so that users can adjust according to the actual machining size deviation.

[0048] The above only describes the preferred embodiments of the present application, and it should be pointed out that for ordinary skilled persons in the technical field, some improvements can be made without departing from the principles of the present application, and these improvements should also be considered as the protection scope of the present application.

Claims

1. An adjustment structure for a T-series blade reamer, characterized in that, Includes a reamer bar (100), a blade (200), a screw (300), a cylindrical pin (400), a diameter locating expansion ring (500), an expansion ring locating pin (800), an expansion pin (700), and an internal hex bolt (600). The reamer rod (100) has a cylindrical hole (107) and a threaded hole (106) inside; the blade (200) is mounted on the end face of the reamer rod (100) by a screw (300); the inner ring of the diameter positioning expansion ring (500) has an inner conical surface (501), and the outer ring has a wear-resistant area (502) and an elastic deformation area (503); the expansion pin (700) has a truncated cone (701) and a truncated cylinder (702); the expansion pin (700) has a bolt countersunk hole (703) and a bolt through hole (704) inside. The expansion pin (700) passes through the diameter positioning expansion ring (500) and is inserted into the cylindrical hole (107). The internal hex bolt (600) passes through the expansion pin (700) and engages with the threaded hole (106). The blade (200) contacts the wear-resistant area (502).

2. The adjustment structure for a T-series blade reamer according to claim 1, characterized in that, The truncated cone (701) on the expansion pin (700) mates with the inner conical surface (501), the cylindrical truncated cone (702) mates with the cylindrical hole (107), and the internal hexagonal bolt (600) passes through the bolt countersunk hole (703) and the bolt through hole (704) and is screwed into the threaded hole (106).

3. The adjustment structure for a T-series blade reamer according to claim 1, characterized in that, The blade (200) is a triangular blade. The blade (200) is provided with a front end face (201), a rear end face (202), a lower end face (203), an arc-shaped cutting edge (204), a rake face (205), a flank face (206), and a cutting edge (207) formed by the rake face (205) and the flank face (206). The blade (200) is provided with a countersunk hole (208) and a through hole (209) inside. A force-bearing surface (210) is provided at the transition between the countersunk hole (208) and the through hole (209). The rear end face (202) of the blade is in contact with the end face of the reamer bar (100), and the lower end face (203) of the blade is in contact with the wear-resistant area (502).

4. The adjustment structure for a T-series blade reamer according to claim 3, characterized in that, The end face of the reamer bar (100) is provided with a cylindrical pin hole (104), a threaded mounting hole (105), and an expansion ring positioning pin hole (108). The screw (300) passes through the screw countersunk hole (208) and the screw through hole (209) and engages with the threaded mounting hole (105). The cylindrical pin (400) is fixed in the cylindrical pin hole (104) by interference fit. One end of the expansion ring locating pin (800) is installed in the expansion ring locating pin hole (108) by interference fit, and the other end engages with the diameter locating expansion ring (500).

5. The adjustment structure for a T-series blade reamer according to claim 4, characterized in that, The head of the screw (300) is provided with a plum blossom groove (301) and the lower part is provided with a thread (303). A countersunk head (302) is provided at the transition position between the two. The countersunk head (302) can cooperate with the force-bearing surface (210).

6. The adjustment structure for a T-series blade reamer according to claim 1, characterized in that, The left side of the reamer bar (100) is provided with a connecting flange (101).

7. The adjustment structure for a T-series blade reamer according to claim 1, characterized in that, Several chip grooves (102) are arranged at unequal angles on the right side of the reamer bar (100), and cooling water holes (103) are provided on the chip grooves (102).

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