Precise milling cutter structure for machining worm

Abstract

The precision milling cutter structure comprises two bases and supporting plates, rotating shafts are arranged at the upper ends of the sides, close to each other, of the two supporting plates, a cutter holder is movably connected between the sides, close to each other, of the rotating shafts on the two sides, a through hole is formed in the middle of the interior of the cutter holder, and the outer surface of one side of the through hole is provided with a through hole. An annular seat is fixedly connected to the surface of the tool apron, a plurality of sliding grooves are formed in the surface of the annular seat at equal intervals, a movable seat penetrating and extending to the through hole is slidably connected to the interior of each sliding groove, and a tool bit is fixedly connected to the end, close to the through hole, of each movable seat through a bolt. The connecting seats at the two ends of the tool apron are rotated on the outer surface of the rotating shaft, when the angle of the tool apron is adjusted, the threaded rod penetrates through the connecting seats in a threaded mode, the bottom end of the threaded rod abuts against the outer surface of the rotating shaft, then movement of the tool apron is limited, the angle of the tool bit is adjusted, and therefore when a blank rotates at a high speed, the tool bit is not damaged. And the milling angle can be adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of milling cutters, in particular to a precision milling cutter structure for machining worm gears. Background Technique

[0002] A worm gear refers to a gear with one or several helical teeth that meshes with a worm wheel to form an intersecting-axis gear pair. In the production and manufacturing of worm gears, various machining operations are required. Among them, the machining of the tooth profile angle of the worm gear is to fix the blank and use a milling cutter to feed on the blank rotating at a high speed to cut out the required shape and features.

[0003] However, some milling cutters can only mill helical teeth at a fixed angle, which is not convenient to adjust the milling angle according to requirements. Moreover, the width of the milled groove is fixed. When grooves of different widths need to be milled, different cutter heads usually need to be replaced to achieve the effect of changing the width of the milled groove, which is troublesome to operate. Therefore, it does not meet the existing requirements, and for this reason, we propose a precision milling cutter structure for machining worm gears. Content of the Utility Model

[0004] The purpose of the utility model is to provide a precision milling cutter structure for machining worm gears, so as to solve the problems put forward in the above background technique that the milling cutter can only mill helical teeth at a fixed angle, it is not convenient to adjust the milling angle according to requirements, and the width of the milled groove is fixed. When grooves of different widths need to be milled, different cutter heads usually need to be replaced to achieve the effect of changing the width of the milled groove, which is troublesome to operate.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a precision milling cutter structure for machining worm gears, including two bases and a support plate. The support plate is fixedly arranged at the upper ends of the two bases. On the upper ends of the sides of the two support plates close to each other, there are rotating shafts. Between the sides of the two rotating shafts close to each other, there is a tool holder movably connected. In the middle of the tool holder, there is a through hole. On the outer surface of one side of the through hole and on the surface of the tool holder, there is an annular seat fixedly connected. On the surface of the annular seat, a number of sliding grooves are equidistantly arranged. Inside each sliding groove, there is a movable seat slidingly connected and extending through the through hole. One end of the movable seat close to the through hole is fixedly connected with a tool bit through a bolt.

[0006] Preferably, both ends of the tool holder are fixedly connected with connecting seats. Both sides of the connecting seats are rotatably connected to the outer surface of the rotating shaft.

[0007] Preferably, on the upper ends of both sides of the connecting seats, there are threaded rods rotatably connected and extending through the connecting seats. And one end of the threaded rod extending into the connecting seat abuts against the outer surface of the rotating shaft.

[0008] Preferably, an axle seat is fixedly connected to the outer side of the annular seat and on the outer surface of the tool holder, and a gear disc is rotatably connected to the side of the axle seat away from the tool holder.

[0009] Preferably, a plurality of arc-shaped holes corresponding to the movable seat are formed on the surface of the gear disc, and the arc-shaped holes are inclined. A limiting rod is fixedly connected to the side of the movable seat away from the tool holder, and the limiting rod is slidably connected to the inside of the arc-shaped hole.

[0010] Preferably, a fixing plate is fixedly connected to the middle of the top end of the tool holder. A gear is rotatably connected to the side of the fixing plate close to the gear disc through a rotating handle, and the outer surface of the gear is meshed with the gear disc.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. By rotating to adjust the angle of the tool holder, the connecting seats at both ends of the tool holder rotate on the outer surface of the rotating shaft. When the angle of the tool holder is adjusted, the threaded rod is threadedly penetrated through the connecting seat, and the bottom end of the threaded rod abuts against the outer surface of the rotating shaft, thereby restricting the movement of the tool holder and adjusting the angle of the tool head. Thus, when the blank rotates at a high speed, the milling angle can be adjusted.

[0013] 2. By rotating the gear to mesh the gear with the outer surface of the gear disc, the gear disc is driven to rotate. Through the rotation of the gear disc, the limiting rod slides along the inside of the arc-shaped hole, and the movable seat is driven to slide along the inside of the chute. By the movement of the movable seat, the tool head can be driven to approach or move away from the through hole, and thus the width of the milling groove can be conveniently adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the whole of the present utility model;

[0015] Figure 2 is a front sectional view of the whole of the present utility model;

[0016] Figure 3 is a schematic structural diagram of the tool holder of the present utility model;

[0017] Figure 4 is a schematic structural diagram of the gear disc of the present utility model.

[0018] In the figure: 1. Base; 2. Support plate; 3. Rotating shaft; 4. Connecting seat; 5. Threaded rod; 6. Tool holder; 601. Through hole; 7. Annular seat; 701. Chute; 8. Movable seat; 9. Tool head; 10. Limiting rod; 11. Axle seat; 12. Gear disc; 13. Arc-shaped hole; 14. Fixing plate; 15. Gear. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0020] Please refer to Figures 1 to 4 , an embodiment provided by the present utility model: a precision milling cutter structure for machining a worm, including two bases 1 and a support plate 2. The support plate 2 is fixedly arranged at the upper ends of the two bases 1. At the upper ends of the sides of the two support plates 2 close to each other, there are rotating shafts 3. Between the sides of the two rotating shafts 3 close to each other, there is a movable connection with a tool holder 6. In the middle of the tool holder 6, there is a through hole 601. On the outer surface of one side of the through hole 601 and on the surface of the tool holder 6, there is a fixed connection with an annular seat 7. On the surface of the annular seat 7, a number of sliding grooves 701 are equidistantly arranged. Inside each sliding groove 701, there is a sliding connection with a movable seat 8 that penetrates and extends to the through hole 601. One end of the movable seat 8 close to the through hole 601 is fixedly connected with a tool bit 9 through a bolt.

[0021] Both ends of the tool holder 6 are fixedly connected with connecting seats 4. The two connecting seats 4 are rotatably connected to the outer surfaces of the rotating shafts 3. At the upper ends of the two connecting seats 4, there are rotating connections with threaded rods 5 that penetrate and extend into the connecting seats 4. And one end of the threaded rod 5 extending into the connecting seat 4 abuts against the outer surface of the rotating shaft 3.

[0022] By rotating to adjust the angle of the tool holder 6, the connecting seats 4 at both ends of the tool holder 6 rotate on the outer surfaces of the rotating shafts 3. When the angle of the tool holder 6 is adjusted, the threaded rod 5 is threaded through the connecting seat 4, and the bottom end of the threaded rod 5 abuts against the outer surface of the rotating shaft 3, thereby restricting the movement of the tool holder 6 and adjusting the angle of the tool bit 9, so that when the blank rotates at a high speed, the milling angle can be adjusted.

[0023] On the outer side of the annular seat 7 and on the outer surface of the tool holder 6, there is a fixed connection with a shaft seat 11. On the side of the shaft seat 11 away from the tool holder 6, there is a rotatable connection with a gear disk 12. On the surface of the gear disk 12, there are a number of arc-shaped holes 13 corresponding to the movable seats 8, and the arc-shaped holes 13 are inclined. On the side of the movable seat 8 away from the tool holder 6, there is a fixed connection with a limiting rod 10, and the limiting rod 10 is slidably connected inside the arc-shaped hole 13. In the middle of the top end of the tool holder 6, there is a fixed connection with a fixing plate 14. On the side of the fixing plate 14 close to the gear disk 12, there is a rotatable connection with a gear 15 through a turning handle, and the outer surface of the gear 15 meshes with the gear disk 12.

[0024] By rotating the gear 15, the outer surface of the gear 15 is engaged with the gear disc 12, thereby driving the gear disc 12 to rotate. By the rotation of the gear disc 12, the limiting rod 10 slides along the inside of the arc-shaped hole 13, and drives the movable seat 8 to slide along the inside of the chute 701. By the movement of the movable seat 8, the cutter head 9 can be driven to approach or move away from the through hole 601, and thus it is convenient to adjust the width of the milling groove.

[0025] When the precision milling cutter for machining the worm is in use, by rotating to adjust the angle of the cutter seat 6, the connecting seats 4 at both ends of the cutter seat 6 rotate on the outer surface of the rotating shaft 3. When the angle of the cutter seat 6 is adjusted, the threaded rod 5 is threaded through the connecting seat 4, and the bottom end of the threaded rod 5 abuts against the outer surface of the rotating shaft 3, thereby restricting the movement of the cutter seat 6 and adjusting the angle of the cutter head 9, so that when the blank rotates at a high speed, the milling angle can be adjusted.

[0026] When it is necessary to adjust the width of the milling groove, by rotating the gear 15, the outer surface of the gear 15 is engaged with the gear disc 12, thereby driving the gear disc 12 to rotate. By the rotation of the gear disc 12, the limiting rod 10 slides along the inside of the arc-shaped hole 13, and drives the movable seat 8 to slide along the inside of the chute 701. By the movement of the movable seat 8, the cutter head 9 can be driven to approach or move away from the through hole 601, and thus it is convenient to adjust the width of the milling groove.

[0027] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A precision milling cutter structure for machining a worm, comprising two bases (1) and a support plate (2), wherein the support plate (2) is fixedly arranged at the upper ends of the two bases (1), and characterized in that: A rotating shaft (3) is provided at the upper end of the side where the two support plates (2) are close to each other, and a knife seat (6) is movably connected between the sides where the rotating shafts (3) are close to each other. A through hole (601) is provided in the middle of the knife seat (6), and an annular seat (7) is fixedly connected to the outer surface of one side of the through hole (601) and the surface of the knife seat (6). A plurality of sliding grooves (701) are equidistantly provided on the surface of the annular seat (7), and a movable seat (8) extending through and extending to the through hole (601) is slidably connected inside each of the sliding grooves (701), and a knife head (9) is fixedly connected to one end of the movable seat (8) close to the through hole (601) by a bolt.

2. A precision milling cutter structure for machining a worm according to claim 1, characterized in that: Both ends of the knife seat (6) are fixedly connected to a connecting seat (4), and the connecting seats (4) on both sides are rotatably connected to the outer surface of the rotating shaft (3).

3. A precision milling cutter structure for machining a worm according to claim 2, characterized in that: The upper ends of the connection seats (4) on both sides are rotatably connected to threaded rods (5) extending through and into the interior of the connection seats (4), and one end of the threaded rod (5) extending into the interior of the connection seat (4) abuts against the outer surface of the rotating shaft (3).

4. The precision milling cutter structure for machining a worm according to claim 1, characterized in that: An outer side of the annular seat (7) and located on the outer surface of the knife seat (6) is fixedly connected to a shaft seat (11), and a side of the shaft seat (11) away from the knife seat (6) is rotatably connected to a gear plate (12).

5. A precision milling cutter structure for machining a worm according to claim 4, characterized in that: The surface of the gear plate (12) is provided with a plurality of arc holes (13) corresponding to the movable seat (8), and the arc holes (13) are arranged in an inclined manner. A side of the movable seat (8) away from the knife seat (6) is fixedly connected to a limiting rod (10), and the limiting rod (10) is slidably connected to the inside of the arc hole (13).

6. The precision milling cutter structure for machining a worm according to claim 4, characterized in that: A fixing plate (14) is fixedly connected to the middle of the top of the knife seat (6), and a side of the fixing plate (14) close to the gear plate (12) is connected to a gear (15) by rotation of a handle, and the outer surface of the gear (15) is meshed with the gear plate (12).

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