Detachable multi-cutting-edge round nose milling cutter

Abstract

The utility model belongs to the technical field of milling cutters, particularly relates to a detachable multi-blade round-nose milling cutter, and provides the following scheme aiming at the problem that the use cost is increased because a blade of the milling cutter is always scrapped thoroughly if a little of the blade is damaged in the working process because the conventional cutting blade and a connecting block form an integrated structure. Comprising a milling cutter base and a fixing block fixed to the top end of the milling cutter base, clamping grooves are formed in the two sides of the fixing block, a blade groove is formed in the surface of the milling cutter base, milling blades are arranged in the blade groove, and a protection block is arranged on the right side of the blade groove. The milling cutter blade and the protective block are placed in the blade groove, then the fixing screw is rotated, and the milling cutter blade and the protective block are fixed on the milling cutter seat, so that the stability of the device is enhanced, the milling cutter blade is convenient to replace, and the cutting edge and the connecting block are prevented from forming an integrated structure, so that the cutter blade of the milling cutter is prevented from being damaged slightly in the working process. And the problem that the knife is completely scrapped is solved.

Description

Technical Field

[0001] The utility model relates to a round nose milling cutter, in particular to a detachable multi-blade round nose milling cutter, belonging to the technical field of cutter tools. Background Art

[0002] A round nose milling cutter is a tool that uses a milling cutter to cut on a workpiece. Its blade gear is arc-shaped, suitable for machining arc surfaces of different curvatures, and is cut by rotating and feeding the workpiece. The round nose milling cutter has a small cutting angle, which can not only maintain the stability of the cutting force, but also reduce chip accumulation, improve cutting accuracy and machining surface quality.

[0003] In the prior art, a multi-blade round nose milling cutter disclosed in the announcement number CN210702760U includes a rotating rod, a round nose spiral is connected to the outer side of the rotating rod, a cutting blade is arranged on the round nose spiral, and the cutting blades are connected by a connecting block, the rotating rod, the round nose spiral and the cutting blade are an integrated structure, and the cutting blades are connected by the connecting block to form an integrated structure. The multi-blade round nose milling cutter has a simple structure and low manufacturing process requirements, and the milling cutter can make the cutting blade more stable through the connecting block, reducing the probability of the cutting blade breaking during the operation of the milling cutter, which is conducive to increasing the service life of the milling cutter.

[0004] In the above technology, the milling cutter can make the cutting blade more stable through the connecting block, thereby reducing the probability of the cutting blade breaking during the operation of the milling cutter. However, since the cutting blade will still be damaged after long-term use, and the cutting blade and the connecting block form an integrated structure, if the blade of the milling cutter is damaged slightly during operation, the cutter will be completely scrapped, thereby increasing the cost of use. In view of this, a detachable multi-blade round nose milling cutter is provided to overcome the above-mentioned defects. Utility Model Content

[0005] The utility model provides a detachable multi-blade round nose milling cutter to solve the problem that the cutting blade and the connecting block form an integrated structure, which causes the blade of the milling cutter to be completely scrapped if it is slightly damaged during operation, thereby increasing the cost of use.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions: a detachable multi-blade round nose milling cutter, comprising a milling cutter seat and a fixing block fixed on the top of the milling cutter seat, and clamping grooves are opened on both sides of the fixing block;

[0007] A blade slot is provided on the surface of the milling cutter seat, a milling blade is arranged inside the blade slot, and a protective block is arranged on the right side of the blade slot;

[0008] The right side of the protection block is threadedly connected with two fixing screws, and the two fixing screws penetrate the interior of the protection block. The milling cutter is fixed inside the cutter slot through the protection block and the fixing screws.

[0009] As a further solution of the utility model: a connecting block is arranged on the outer side of the fixing block, and fastening bolts are threadedly connected on both sides of the connecting block.

[0010] As a further solution of the utility model: a bearing is connected to one side of the fastening bolt, a support plate is fixedly connected to one side of the bearing, a clamping block is fixedly connected to one side of the support plate, and the sizes of the clamping block and the clamping groove match each other.

[0011] As a further solution of the utility model: compression springs are fixed on both sides of the support rod, the compression springs are fixedly connected to the connecting block, and the support plate forms an elastic telescopic structure with the connecting block through the compression springs.

[0012] As a further solution of the utility model: an adjusting rod is fixed on the top of the connecting block, scale lines are arranged on the surface of the adjusting rod, an adjusting hole is opened on one side of the adjusting rod, and a sleeve rod is sleeved on the outer side of the adjusting rod.

[0013] As a further solution of the utility model: the bottom ends of both sides of the sleeve rod are threadedly connected with fastening screws, one side of the fastening screws is connected to the support rod through a rotating bearing, the bottom end of the support rod is fixed with a right fastening block, and a left fastening block is provided on one side of the right fastening block, and the support rod is slidably connected to the sleeve rod through the fastening screws.

[0014] As a further solution of the utility model: rubber pads are fixed inside the left fastening block and the right fastening block, an adjusting screw is threadedly connected to the right side of the sleeve rod, a positioning block is fixedly connected to the top end surface of the sleeve rod, and the adjusting rod forms a sliding structure with the sleeve rod through the adjusting screw.

[0015] The beneficial effects of the utility model are:

[0016] 1. Place the milling blade and the protective block in the blade slot, and then turn the fixing screw to fix the milling blade and the protective block on the milling cutter seat. This enhances the stability of the device, facilitates the replacement of the milling blade, and avoids the cutting edge and the connecting block forming an integrated structure. As a result, if the milling cutter blade is damaged during operation, the cutter will be completely scrapped, thereby increasing the cost of use.

[0017] 2. The length of the milling cutter can be flexibly adjusted by sliding the adjusting rod up and down inside the sleeve rod. Before milling the device, the extended length of the milling cutter can be easily confirmed by observing the scale line on the adjusting rod. The adjusting screw is connected to the adjusting holes at different heights to adjust the length of the milling cutter.

[0018] 3. By rotating the fastening bolts on both sides of the connecting block, the fastening bolts rotate to make the support plate slide inside the limiting slide groove and squeeze the compression spring, so that the clamping block is inserted into the clamping groove. With the cooperation of the compression spring, the clamping block and the support plate, the installation of the milling cutter body is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the milling cutter seat of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the adjusting rod and the sleeve rod of the utility model;

[0022] Figure 4 This is a schematic diagram of the internal structure of the connecting block of the utility model.

[0023] In the figure: 1. milling cutter seat; 2. connecting block; 3. fastening bolt; 4. adjusting rod; 5. sleeve rod; 6. positioning block; 7. adjusting screw; 8. left fastening block; 9. fastening screw; 10. fixing block; 11. blade slot; 12. protective block; 13. milling cutter; 14. adjusting hole; 15. support rod; 16. right fastening block; 17. bearing; 18. compression spring; 19. support plate; 20. clamping block. DETAILED DESCRIPTION

[0024] 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

[0025] like Figures 1 to 4 As shown, a detachable multi-blade round nose milling cutter comprises a milling cutter seat 1 and a fixing block 10 fixed on the top of the milling cutter seat 1, and clamping grooves are provided on both sides of the fixing block 10;

[0026] A blade slot 11 is provided on the surface of the milling cutter seat 1, a milling blade 13 is provided inside the blade slot 11, and a protective block 12 is provided on the right side of the blade slot 11;

[0027] The right side of the protection block 12 is threadedly connected with two fixing screws, and the two fixing screws penetrate the interior of the protection block 12 . The milling blade 13 is fixed inside the blade slot 11 through the protection block 12 and the fixing screws. Embodiment 2

[0028] In addition to all the technical features of the first embodiment, this embodiment also includes:

[0029] A connecting block 2 is arranged outside the fixing block 10, and both sides of the connecting block 2 are threadedly connected with fastening bolts 3. The fastening bolts 3 on both sides of the connecting block 2 are rotated to fix the connecting block 2 and the fixing block 10 to position the milling cutter seat 1.

[0030] A bearing 17 is connected to one side of the fastening bolt 3, a support plate 19 is fixedly connected to one side of the bearing 17, a clamping block 20 is fixedly connected to one side of the support plate 19, and the sizes of the clamping block 20 and the clamping groove match each other. By rotating the fastening bolts 3 on both sides of the connecting block 2, the fastening bolts 3 rotate to make the support plate 19 slide inside the limiting slide groove and squeeze the compression spring 18, so that the clamping block 20 is inserted into the clamping groove, thereby completing the assembly between the milling cutter seat 1 and the connecting block 2, which is convenient for replacing the milling cutter seat 1 at will.

[0031] Compression springs 18 are fixed on both sides of the support rod 15, and the compression spring 18 and the connecting block 2 are fixedly connected. The support plate 19 forms an elastic telescopic structure with the connecting block 2 through the compression spring 18. With the cooperation of the compression spring 18, the clamping block 20 and the support plate 19, the installation of the milling cutter body is more stable. Embodiment 3

[0032] In addition to all the technical features of the first embodiment, this embodiment also includes:

[0033] An adjusting rod 4 is fixed to the top of the connecting block 2, and scale lines are set on the surface of the adjusting rod 4. An adjusting hole 14 is opened on one side of the adjusting rod 4, and a sleeve rod 5 is sleeved on the outer side of the adjusting rod 4. The adjusting rod 4 slides up and down inside the sleeve rod 5, so that the length of the milling cutter can be flexibly adjusted. Before milling the device, the scale lines on the adjusting rod 4 can be observed to facilitate the confirmation of the extended length of the milling cutter, and the adjusting screw 7 is connected to the adjusting holes 14 at different heights to realize the adjustment of the length of the milling cutter.

[0034] The bottom ends of both sides of the sleeve rod 5 are threadedly connected with fastening screws 9, one side of the fastening screws 9 is connected to a support rod 15 through a rotating bearing, a right fastening block 16 is fixed to the bottom end of the support rod 15, and a left fastening block 8 is provided on one side of the right fastening block 16. The support rod 15 is slidably connected to the sleeve rod 5 through the fastening screws 9. By rotating the fastening screws 9, the fastening screws 9 drive the left fastening block 8 and the right fastening block 16 to clamp the adjusting rod 4 under the action of the support rod 15, thereby enhancing the tightness of the connection between the adjusting rod 4 and the sleeve rod 5.

[0035] Rubber pads are fixed inside the left fastening block 8 and the right fastening block 16. The right side of the sleeve rod 5 is threadedly connected with an adjusting screw 7. The top surface of the sleeve rod 5 is fixedly connected with a positioning block 6. The adjusting rod 4 forms a sliding structure with the sleeve rod 5 through the adjusting screw 7. The setting of the rubber pad prevents excessive friction between the adjusting rod 4 and the left fastening block 8 when the tool rotates at high speed, thereby reducing the service life of the adjusting rod 4.

[0036] Working principle: first, place the milling blade 13 and the protective block 12 in the blade slot 11, then turn the fixing screw to fix the milling blade 13 and the protective block 12 on the milling cutter seat 1, which enhances the stability of the device and facilitates the replacement of the milling blade 13, and then turn the fastening bolts 3 on both sides of the connecting block 2. The fastening bolts 3 drive the support plate 19 to slide inside the limiting slide groove under the action of the bearing 17 and squeeze the compression spring 18, so that the clamping block 20 is inserted into the clamping groove. With the cooperation of the compression spring 18, the clamping block 20 and the support plate 19, the installation of the milling cutter body is more stable, thereby completing the connection between the fixing block 10 and the connecting block 2. After assembly, the adjusting rod 4 is then slid up and down inside the sleeve rod 5, so that the length of the milling cutter can be flexibly adjusted. Before milling the device, the scale line on the adjusting rod 4 can be observed to conveniently confirm the extended length of the milling cutter, and the adjusting screw 7 is connected to the adjusting holes 14 at different heights to achieve the adjustment of the length of the milling cutter. Finally, the fastening screw 9 is turned. Under the action of the support rod 15, the fastening screw 9 drives the left fastening block 8 and the right fastening block 16 to clamp the adjusting rod 4, thereby enhancing the tightness of the connection between the adjusting rod 4 and the sleeve rod 5. The positioning block 6 set at the top of the sleeve rod 5 can prevent the milling cutter from shifting and affecting the working effect.

[0037] 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.

[0038] 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 detachable multi-blade round nose milling cutter, comprising a milling cutter seat (1) and a fixing block (10) fixed to the top of the milling cutter seat (1), characterized in that: Clamping grooves are provided on both sides of the fixing block (10); A blade slot (11) is provided on the surface of the milling cutter seat (1), a milling blade (13) is arranged inside the blade slot (11), and a protective block (12) is arranged on the right side of the blade slot (11); The right side of the protection block (12) is threadedly connected to two fixing screws, the two fixing screws penetrate the interior of the protection block (12), and the milling blade (13) is fixed inside the blade slot (11) through the protection block (12) and the fixing screws.

2. A detachable multi-blade round nose milling cutter according to claim 1, characterized in that: A connecting block (2) is arranged outside the fixing block (10), and fastening bolts (3) are threadedly connected to both sides of the connecting block (2).

3. A detachable multi-blade round nose milling cutter according to claim 2, characterized in that: One side of the fastening bolt (3) is connected to a bearing (17), one side of the bearing (17) is fixedly connected to a support plate (19), one side of the support plate (19) is fixedly connected to a clamping block (20), and the dimensions of the clamping block (20) and the clamping groove match.

4. A detachable multi-blade round nose milling cutter according to claim 3, characterized in that: Compression springs (18) are fixed on both sides of the support rod (15); the compression springs (18) are fixedly connected to the connection block (2); and the support plate (19) forms an elastic telescopic structure through the compression springs (18) and the connection block (2).

5. A detachable multi-blade round nose milling cutter according to claim 2, characterized in that: An adjusting rod (4) is fixed to the top end of the connecting block (2), scale lines are provided on the surface of the adjusting rod (4), an adjusting hole (14) is provided on one side of the adjusting rod (4), and a sleeve rod (5) is sleeved on the outer side of the adjusting rod (4).

6. A detachable multi-edge round nose milling cutter according to claim 5, characterized in that: The bottom ends of both sides of the sleeve rod (5) are threadedly connected with fastening screws (9), one side of the fastening screws (9) is connected to a support rod (15) via a rotary bearing, a right fastening block (16) is fixed to the bottom end of the support rod (15), a left fastening block (8) is arranged on one side of the right fastening block (16), and the support rod (15) is slidably connected to the sleeve rod (5) via the fastening screws (9).

7. A detachable multi-blade round nose milling cutter according to claim 6, characterized in that: Rubber pads are fixed inside the left fastening block (8) and the right fastening block (16), an adjusting screw (7) is threadedly connected to the right side of the sleeve rod (5), a positioning block (6) is fixedly connected to the top end surface of the sleeve rod (5), and a sliding structure is formed between the adjusting rod (4) and the sleeve rod (5) via the adjusting screw (7).

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