High-precision combined cutter handle

Abstract

The utility model relates to the technical field of machine tool machining, in particular to a high-precision combined cutter handle which comprises a cutter handle and a cutter, a locking mechanism is arranged on the surface of the cutter handle, a plurality of transmission key grooves are annularly formed in the surface of the cutter, the locking mechanism comprises an annular sliding groove, and the surface of the cutter handle is fixedly connected with the annular sliding groove. A limiting ring is slidably connected into the annular sliding groove, a rotating ring is fixedly connected to the lower end of the limiting ring, and a gear ring is fixedly connected to the lower end of the rotating ring. A plurality of threaded rods are matched with a plurality of transmission key grooves to fix a tool, due to multi-face clamping, cutting torque can be shared, damage to the tool in the using process is reduced, meanwhile, due to the fact that the threaded rods make folding movement at the same time, the tool is positioned and clamped, and the machining efficiency is improved. Therefore, the deviation degree of the center axis of the cutter from the center axis of the cutter handle is reduced, and the using precision of the cutter is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tool processing, in particular to a high-precision combined tool handle. Background Art

[0002] With the development of industry, the market has seen an increase in demand for ultra-high-precision equipment, such as tool holders for machine tools. At the same time, the processing requirements for machine tools are also becoming increasingly higher. Machine tools are the mother of industrial processing, and the accuracy, stability, and rigidity of the tool holders in the HSK / BT / ISO series used by them play a decisive role.

[0003] The existing method of clamping the tool with some tool holders is that a single screw is threadedly connected to a threaded hole opened on the surface of the tool holder, the rear end of the tool is inserted into the interior of the tool holder, and the screw is turned so that one end of the screw is pressed against the inside of a transmission keyway opened on the surface of the tool, thereby achieving the fixation of the tool holder to the tool, and the torque is transmitted through the mutual cooperation between the screw and the transmission keyway, which will generate stress on the transmission keyway. Since only one screw cooperates with one keyway, a large stress will be generated on the transmission keyway, causing greater damage to the tool. At the same time, since the cooperation relationship between some tool holders and the tool is a clearance fit, when using a screw to press against the transmission keyway, the center axis of the tool will slightly deviate from the center axis of the tool holder, which will affect the accuracy of the tool. Utility Model Content

[0004] In response to the deficiencies in the prior art, the utility model provides the following technical solutions: a high-precision combined tool holder, comprising a tool holder and a tool, wherein a locking mechanism is provided on the surface of the tool holder, a plurality of transmission key grooves are provided in an annular surface of the tool, the locking mechanism comprises an annular slide groove, the surface of the tool holder is fixedly connected with an annular slide groove, the internal sliding connection of the annular slide groove is connected to a limiting ring, the lower end of the limiting ring is fixedly connected with a rotating ring, the lower end of the rotating ring is fixedly connected with a gear ring, the surface of the tool holder is threadedly connected with a plurality of threaded rods, one end of the threaded rod extending to the inside of the tool holder is adapted to the transmission key groove, and one end of the threaded rod extending to the outside of the tool holder is connected to a gear, and the gear and the gear ring are meshed with each other.

[0005] As an improvement of the above technical solution, the outer circular surface of the rotating ring is fixedly connected to a connecting ring, the lower end of the connecting ring is fixedly connected to a bevel ring, one end of the gear is fixedly connected to a top plate through a rotating shaft, and the top plate is aligned with the inclined surface of the bevel ring.

[0006] As an improvement to the above technical solution, an arc angle is provided on the outer circumferential surface of the top plate, and the top plate contacts the inclined surface of the bevel ring through the arc angle.

[0007] As an improvement of the above technical solution, a spring washer is wrapped around the surface of the threaded rod, one end of the spring washer is connected to the knife handle, and the other end of the spring washer is connected to a retaining ring, and the retaining ring is in contact with the gear.

[0008] As an improvement to the above technical solution, a plurality of balls are provided on the surface of the retaining ring, and the retaining ring contacts the gear through the balls.

[0009] Beneficial effects of the utility model:

[0010] The tool is fixed by the cooperation of multiple threaded rods and multiple transmission keyways. Due to the multi-sided clamping, the cutting torque is shared, thereby reducing damage to the tool during use. At the same time, since the multiple threaded rods undergo simultaneous retraction movement, the tool is positioned and clamped, thereby reducing the degree of deviation of the tool's center axis from the center axis of the tool holder and improving the accuracy of tool use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is the overall structural diagram of the utility model;

[0012] Figure 2 This is the tool structure diagram of the utility model;

[0013] Figure 3 This is a cross-sectional structural diagram of the handle of the utility model;

[0014] Figure 4 This is a structural diagram of the locking mechanism of the utility model;

[0015] Figure 5 For this utility model Figure 3 The enlarged structure diagram at B;

[0016] Figure 6 For this utility model Figure 1 A magnified structural diagram;

[0017] Figure 7 This is a structural diagram of the retaining ring of the present utility model.

[0018] Figure numerals: 1. tool handle; 2. locking mechanism; 21. annular slide; 22. rotating ring; 23. gear ring; 24. threaded rod; 25. gear; 26. connecting ring; 27. bevel ring; 28. top plate; 29. ​​spring washer; 291. retaining ring; 292. ball; 293. limiting ring; 3. tool; 4. transmission keyway. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] See also Figure 1-7 The utility model provides a technical solution: a high-precision combined tool holder, comprising a tool holder 1 and a tool 3. A locking mechanism 2 is provided on the surface of the tool holder 1, and a plurality of transmission key grooves 4 are provided in a ring shape on the surface of the tool holder 3. The locking mechanism 2 comprises an annular slide groove 21. The surface of the tool holder 1 is fixedly connected with the annular slide groove 21. The internal sliding connection of the annular slide groove 21 is provided with a limit ring 293. The lower end of the limit ring 293 is fixedly connected with a rotating ring 22. The lower end of the rotating ring 22 is fixedly connected with a gear ring 23. The surface of the tool holder 1 is threadedly connected with a plurality of threaded rods 24. One end of the threaded rod 24 extends to the inside of the tool holder 1 and is adapted to the transmission key groove 4. One end of the threaded rod 24 extends to the outside of the tool holder 1 and is connected to a gear 25. The gear 25 and the gear ring 23 are meshed with each other.

[0021] In this embodiment, the rear end of the tool 3 is first inserted into the interior of the tool handle 1, and then the rotating ring 22 is rotated, so that the limit ring 293 rotates inside the annular groove 21, and the gear ring 23 rotates at the same time. As the gear ring 23 rotates, it drives multiple gears 25 to rotate, and then the multiple threaded rods 24 rotate. The multiple threaded rods 24 undergo a retraction movement, and one end thereof is tightly pressed against the interior of the transmission key groove 4, and then the tool 3 is fixed by the cooperation of the multiple threaded rods 24 and the multiple transmission key grooves 4. Due to the multi-sided clamping, the cutting torque will be shared, thereby reducing damage to the tool 3 during use. At the same time, due to the simultaneous retraction movement of the multiple threaded rods 24, the tool 3 is positioned and clamped, thereby reducing the degree of deviation of the center axis of the tool 3 from the center axis of the tool handle 1, and improving the use accuracy of the tool 3.

[0022] Specifically, the outer circumferential surface of the rotating ring 22 is fixedly connected to the connecting ring 26 , the lower end of the connecting ring 26 is fixedly connected to the bevel ring 27 , one end of the gear 25 is fixedly connected to the top plate 28 via a rotating shaft, and the top plate 28 is aligned with the inclined surface of the bevel ring 27 .

[0023] In this embodiment, when the threaded rod 24 rotates and moves, the top plate 28 is driven to rotate and move through the rotating shaft, and the top plate 28 is close to the inclined surface of the bevel ring 27. When one end of the threaded rod 24 is about to contact the inside of the transmission key groove 4, the top plate 28 slides relatively on the inclined surface of the bevel ring 27, thereby pushing the bevel ring 27, and then pushing the limit ring 293 through the connecting ring 26 and the rotating ring 22, so that the limit ring 293 is pressed against the inside of the annular slide groove 21, thereby achieving self-locking of the locking mechanism 2 while clamping the tool 3.

[0024] Specifically, an outer circumferential surface of the top plate 28 is provided with an arc corner, and the top plate 28 contacts the inclined surface of the bevel ring 27 through the arc corner.

[0025] In this embodiment, since the top plate 28 contacts the arc of the inclined surface of the bevel ring 27, when the top plate 28 slides on the inclined surface of the bevel ring 27, the friction between the two is reduced, making it easier for users to use this mechanism.

[0026] Specifically, a spring washer 29 is wound around the surface of the threaded rod 24 , one end of the spring washer 29 is connected to the shank 1 , and the other end of the spring washer 29 is connected to a retaining ring 291 , which contacts the gear 25 .

[0027] In this embodiment, the gear 25 rotates relative to the surface of the support ring 291. When the gear 25 approaches the surface of the tool handle 1, the spring washer 29 is compressed. The elastic force of the spring washer 29 increases the pre-tightening force of the threaded connection between the threaded rod 24 and the tool handle 1, thereby improving the thread self-locking ability of the threaded rod 24.

[0028] Specifically, a plurality of balls 292 are provided on the surface of the retaining ring 291 , and the retaining ring 291 contacts the gear 25 through the balls 292 .

[0029] In this embodiment, when the gear 25 rotates relative to the surface of the retaining ring 291, the provision of the ball 292 can reduce the friction force of the gear 25 when the gear 25 rotates relative to the surface of the retaining ring 291, thereby reducing the mutual wear between the two.

[0030] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same.

Claims

1. A high-precision combined tool handle, comprising a tool handle (1) and a tool (3), wherein the surface of the tool handle (1) is provided with a locking mechanism (2), and the surface of the tool (3) is provided with a plurality of transmission key grooves (4) in an annular shape, characterized in that: The locking mechanism (2) comprises an annular slide groove (21), the surface of the knife handle (1) is fixedly connected with the annular slide groove (21), the interior of the annular slide groove (21) is slidably connected with a limit ring (293), the lower end of the limit ring (293) is fixedly connected with a rotating ring (22), the lower end of the rotating ring (22) is fixedly connected with a gear ring (23), the surface of the knife handle (1) is threadedly connected with a plurality of threaded rods (24), one end of the threaded rod (24) extending to the inside of the knife handle (1) is adapted to the transmission key groove (4), and one end of the threaded rod (24) extending to the outside of the knife handle (1) is connected with a gear (25), and the gear (25) and the gear ring (23) are meshed with each other.

2. The high-precision combined tool handle according to claim 1, characterized in that: The outer circumferential surface of the rotating ring (22) is fixedly connected to a connecting ring (26), the lower end of the connecting ring (26) is fixedly connected to a bevel ring (27), one end of the gear (25) is fixedly connected to a top plate (28) via a rotating shaft, and the top plate (28) is aligned with the inclined surface of the bevel ring (27).

3. The high-precision combined tool handle according to claim 2, characterized in that: The outer circumferential surface of the top plate (28) is provided with an arc angle, and the top plate (28) contacts the inclined surface of the bevel ring (27) through the arc angle.

4. The high-precision combined tool handle according to claim 1, characterized in that: A spring washer (29) is wound around the surface of the threaded rod (24), one end of the spring washer (29) is connected to the knife handle (1), and the other end of the spring washer (29) is connected to a retaining ring (291), and the retaining ring (291) is in contact with the gear (25).

5. The high-precision combined tool handle according to claim 4, characterized in that: A plurality of balls (292) are provided on the surface of the retaining ring (291), and the retaining ring (291) contacts the gear (25) through the balls (292).

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