Anti-falling powerful knife handle

Abstract

The utility model relates to the technical field of powerful knife handles, and discloses an anti-falling powerful knife handle which comprises a knife bar, a powerful knife handle body and a connecting ring, an anti-falling mechanism is arranged on the powerful knife handle body, and the knife bar and the powerful knife handle body are provided with installation mechanisms. The anti-falling mechanism comprises a powerful knife handle pressing cap, a retainer is arranged on an inner ring of the powerful knife handle pressing cap, an O-shaped ring is connected to the inner wall of the powerful knife handle body, a knife end opening gasket is fixedly connected to the right side of the retainer, and a sealing end cover is arranged on the right side of the knife end opening gasket. According to the anti-falling powerful knife handle, compared with a traditional clamping spring, the bearing capacity is higher, the interference magnitude is gradually increased along with climbing of a roller pin by means of the internal taper of the outer sleeve, the maximum stress of the knife handle is limited, meanwhile, hard limiting safety is guaranteed, and the axial seal and the end face seal are installed on the basis of the protective sleeve; scrap iron and cutting fluid are prevented from entering in the machining process, and the service life of the cutter is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of strong tool holders, in particular to a strong tool holder with anti - shedding function. Background Technique

[0002] A strong tool holder is a tool accessory used in machining. It can provide strong clamping force and high rigidity, and is suitable for rough machining of large - diameter cutting tools. This kind of tool holder is usually designed with a slit mechanism and a thickened gripping part to ensure stability under heavy loads and prevent vibration. The strong tool holder can meet the requirements of high - speed and strong cutting and maintain high - precision clamping.

[0003] Traditional strong tool holders adopt a snap - ring limiting method. In the high - speed and heavy - cutting working conditions, the strong tool holder requires a large clamping force on the cutting tool. As a hard limit, the snap - ring is extremely prone to plastic deformation, and then fatigue failure occurs, resulting in the failure of the limit and the separation of the tool holder body from the outer sleeve. Due to the structural limitations of the strong tool holder, it is difficult to install a seal on the cutting - tool clamping side. Most of the products on the market only increase metal and plastic gaskets for sealing, and the sealing effect is not good, resulting in cutting fluid or iron chips entering the cage installation cavity, leading to the failure of the needle roller lubrication, and then resulting in "inability to clamp tightly" or "tool dropping". Summary of the Utility Model

[0004] The purpose of the utility model is to provide a strong tool holder with anti - shedding function to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A strong tool holder with anti - shedding function, including a tool shank, a strong tool holder body and a connecting ring. An anti - dropping mechanism is arranged on the strong tool holder body, and an installation mechanism is arranged between the tool shank and the strong tool holder body;

[0006] The anti - dropping mechanism includes a strong tool holder pressing cap. The strong tool holder pressing cap is inserted into the right - hand inner part of the strong tool holder body. A cage is arranged on the inner ring of the strong tool holder pressing cap. The cage is arranged on the surface of the strong tool holder body. An O - ring is connected to the inner wall of the strong tool holder body. The right side of the cage is fixedly connected with a tool - end opening gasket. A sealing end cap is arranged on the right side of the tool - end opening gasket. The right side of the strong tool holder pressing cap is fixedly connected with the left side of the connecting ring.

[0007] Preferably, the number of O - rings is three. The left - hand O - ring is arranged between the strong tool holder body and the strong tool holder pressing cap, and the right - hand two O - rings are arranged between the tool - end opening gasket, the sealing end cap and the strong tool holder body.

[0008] Preferably, four slots are evenly distributed at one end of the powerful tool holder pressing cap near the cage in the axial direction. The slots evenly distributed on the sealing end cover are designed for elastic deformation, allowing the protective sleeve to be inserted into the tool holder body under elastic deformation and maintaining its expanded state.

[0009] Preferably, the installation mechanism includes a long hole slot, which is opened inside the right side of the tool bar. The right side of the long hole slot is an opening. A connecting plate is fixedly connected to the left side of the inner wall of the long hole slot. Springs are fixedly connected to the periphery of the surface of the connecting plate. The other side of the spring is fixedly connected to a connecting arc plate. The other side of the connecting arc plate is fixedly connected to a limiting spherical ball. Circular hole slots are opened on the periphery of the surface of the tool bar. An annular slot is opened in the inner ring of the connecting ring.

[0010] Preferably, the number of the circular hole slots and the limiting spherical balls is four. The surface of the limiting spherical ball is inserted into the inside of the annular slot. The limiting spherical ball is inserted into the annular slot, which can install the tool bar on the left side of the powerful tool holder body, facilitating normal work in the later stage.

[0011] Preferably, both sides of the four circular hole slots are openings, and the surface of the limiting spherical ball is inserted through the inside of the circular hole slot.

[0012] Compared with the prior art, the present utility model provides a powerful tool holder with anti-dropping, having the following

[0013] Beneficial effects:

[0014] 1. For this powerful tool holder with anti-dropping, compared with the traditional circlip, the protective sleeve has stronger bearing capacity. Depending on the internal taper of the outer sleeve, the interference amount gradually increases with the climbing of the needle roller, limiting the maximum force on the tool holder while ensuring the safety of the hard limit. Axial sealing and end face sealing are installed on the basis of the protective sleeve, avoiding the entry of iron filings and cutting fluid during the processing process and improving the service life of the tool.

[0015] 2. This powerful tool holder with anti-dropping can effectively prevent cutting fluid and iron filings from entering the inside of the needle roller from the outside. At the same time, it can limit the maximum force on the tool holder while ensuring the safety of the hard limit, eliminating the phenomenon of "tool dropping".

[0016] 3. For this powerful tool holder with anti-dropping, when the limiting spherical ball is arranged near the annular slot through the installation mechanism, under the rebound force of the spring, the spring drives the connecting arc plate to move, and the connecting arc plate drives the limiting spherical ball to be inserted into the annular slot, which can install the tool bar on the left side of the powerful tool holder body, facilitating normal work in the later stage. Description of the Drawings

[0017] To more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings:

[0018] Figure 1 Isometric view of the overall structure of the present utility model;

[0019] Figure 2 Exploded view of the structure of the anti-falling mechanism;

[0020] Figure 3 Cross-sectional view of the structure of the anti-falling mechanism;

[0021] Figure 4 For Figure 3 Enlarged view of the structure at position A in

[0022] Figure 5 Structure diagram of the sealing end cover;

[0023] Figure 6 Right-side cross-sectional view of the tool shank and the installation mechanism;

[0024] Figure 7 Cross-sectional view of the connection ring structure.

[0025] In the figure: 1. Tool shank; 2. Strong toolholder body; 3. Anti-falling mechanism; 31. O-ring; 32. Strong toolholder pressing cap; 33. Cage; 34. Tool end opening gasket; 35. Sealing end cover; 4. Installation mechanism; 41. Round hole groove; 42. Connecting plate; 43. Long hole groove; 44. Connecting arc plate; 45. Spring; 46. Limit ball; 47. Annular slot; 5. Connection ring. Specific embodiments

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present utility model.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The utility model provides the following technical solutions:

[0029] Embodiment 1

[0030] Combination Figures 1 to 5 A strong knife handle that prevents falling off, comprising a knife bar 1, a strong knife handle body 2 and a connecting ring 5, the strong knife handle body 2 is provided with an anti-falling mechanism 3, and the knife bar 1 and the strong knife handle body 2 are provided with a mounting mechanism 4;

[0031] The anti-drop mechanism 3 includes a strong knife handle pressure cap 32, which is inserted into the right side of the strong knife handle body 2, and a retaining frame 33 is arranged on the inner ring of the strong knife handle pressure cap 32, and the retaining frame 33 is arranged on the surface of the strong knife handle body 2, and an O-ring 31 is arranged and connected to the inner wall of the strong knife handle body 2, and a knife end opening gasket 34 is fixedly connected to the right side of the retaining frame 33, and a sealing end cover 35 is arranged on the right side of the knife end opening gasket 34, and the right side of the strong knife handle pressure cap 32 is fixedly connected to the left side of the connecting ring 5;

[0032] There are three O-rings 31, the left O-ring 31 is arranged between the powerful tool handle body 2 and the powerful tool handle pressure cap 32, and the two right O-rings 31 are arranged between the knife end opening gasket 34, the sealing end cover 35 and the powerful tool handle body 2. The powerful tool handle pressure cap 32 has four grooves evenly distributed at 90° on one end axially close to the retaining frame 33, and the evenly distributed grooves on the sealing end cover 35 are designed for elastic deformation.

[0033] Furthermore, the protective sleeve has a stronger load-bearing capacity than the traditional retaining spring, and the interference ratio increases gradually with the needle roller due to the internal taper of the sleeve, which limits the maximum force of the tool holder while ensuring the safety of the hard limit. Axial seals and end face seals are installed on the basis of the protective sleeve. This prevents the entry of iron chips and cutting fluid during processing, improves the service life of the tool, and effectively prevents cutting fluid and iron chips from entering the needle roller from the outside. At the same time, the maximum force of the tool holder can be limited while ensuring the safety of the hard limit, eliminating the phenomenon of "tool drop".

[0034] Embodiment 2

[0035] See also Figures 1 - 7, and on the basis of the first embodiment, it is further obtained that the installation mechanism 4 includes a long hole groove 43. The long hole groove 43 is opened inside the right side of the tool bar 1. The right side of the long hole groove 43 is set as an opening. A connecting plate 42 is fixedly connected to the left side of the inner wall of the long hole groove 43. Springs 45 are fixedly connected to the periphery of the surface of the connecting plate 42. The other side of the spring 45 is fixedly connected to a connecting arc plate 44. The other side of the connecting arc plate 44 is fixedly connected to a limiting spherical ball 46. Circular hole grooves 41 are opened on the periphery of the surface of the tool bar 1. An annular slot 47 is opened in the inner ring of the connecting ring 5;

[0036] The number of the circular hole grooves 41 and the limiting spherical balls 46 is four. The surface of the limiting spherical ball 46 is inserted into the inside of the annular slot 47. Both sides of the four circular hole grooves 41 are set as openings. The surface of the limiting spherical ball 46 is inserted through the inside of the circular hole groove 41

[0037] Furthermore, when the limiting spherical ball 46 is arranged near the annular slot 47, under the rebounding force of the spring 45, the spring 45 drives the connecting arc plate 44 to move, and the connecting arc plate 44 drives the limiting spherical ball 46 to be inserted into the annular slot 47, so that the tool bar 1 can be installed on the left side of the strong tool holder body 2, which is convenient for normal work in the later stage.

[0038] The protective sleeve is evenly distributed with four slots at 90° near the cage end in the axial direction, which allows the protective sleeve to be snapped into the tool holder body under elastic deformation and maintain its expanded state. When the rolling needle climbs to the limit stroke, it contacts the outer sleeve and generates interference extrusion, preventing the outer sleeve from detaching from the tool holder body and limiting the limit pressure value received by the tool holder body, so as to achieve the functions of limiting and preventing detachment and preventing stress damage of the tool holder body;

[0039] Through three sealing rings, axial sealing and end face sealing are carried out on both sides to achieve full sealing of the evenly distributed space of the rolling needles, which can effectively prevent cutting fluid and iron filings from entering the inside of the rolling needles from the outside. At the same time, it can limit the maximum force on the tool holder while ensuring the safety of the hard limit.

[0040] During the actual operation process, when this device is used, the strong tool holder pressing cap 32 is evenly distributed with four slots at 90° near one end of the cage 33 in the axial direction, which allows the strong tool holder pressing cap 32 to be snapped into the strong tool holder body 2 under elastic deformation and maintain its expanded state. When the rolling needle climbs to the limit stroke, it contacts the strong tool holder pressing cap 32 and generates interference extrusion, preventing the strong tool holder pressing cap 32 from detaching from the strong tool holder body 2 and limiting the limit pressure value received by the strong tool holder body 2, so as to achieve the functions of limiting and preventing detachment and preventing stress damage of the strong tool holder body 2;

[0041] When the tool shank 1 is inserted into the left side of the high-torque toolholder body 2, the spring 45 is first subjected to a squeezing force, causing the limit ball 46 to be set in the long hole groove 43. Once the limit ball 46 is near the annular slot 47, under the rebound force of the spring 45, the spring 45 drives the connecting arc plate 44 to move, and the connecting arc plate 44 drives the limit ball 46 to be inserted into the annular slot 47, so that the tool shank 1 can be installed on the left side of the high-torque toolholder body 2, facilitating normal operation in the later stage.

[0042] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0043] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, without departing from the principle and spirit of the present invention, various changes, modifications, substitutions and variations made to these embodiments still fall within the protection scope of the present invention.

Claims

1. A strong knife handle that prevents falling off, comprising a knife bar (1), a strong knife handle body (2) and a connecting ring (5), characterized in that: The powerful knife handle body (2) is provided with an anti-drop mechanism (3), and the knife rod (1) and the powerful knife handle body (2) are provided with a mounting mechanism (4); The anti-drop mechanism (3) comprises a powerful knife handle pressure cap (32), the powerful knife handle pressure cap (32) is inserted into the right side of the powerful knife handle body (2), the inner ring of the powerful knife handle pressure cap (32) is provided with a retaining frame (33), the retaining frame (33) is arranged on the surface of the powerful knife handle body (2), the inner wall of the powerful knife handle body (2) is provided with an O-ring (31), the right side of the retaining frame (33) is fixedly connected to a knife end opening gasket (34), the right side of the knife end opening gasket (34) is provided with a sealing end cover (35), and the right side of the powerful knife handle pressure cap (32) is fixedly connected to the left side of the connecting ring (5).

2. The strong knife handle that prevents falling off according to claim 1 is characterized by: There are three O-rings (31), the left O-ring (31) is arranged between the powerful knife handle body (2) and the powerful knife handle pressure cap (32), and the two right O-rings (31) are arranged between the knife end opening gasket (34), the sealing end cover (35) and the powerful knife handle body (2).

3. The strong knife handle that prevents falling off according to claim 1 is characterized by: The powerful tool handle pressure cap (32) has four slots evenly distributed at 90 degrees at one end axially close to the retaining frame (33), and the evenly distributed slots on the sealing end cover (35) are designed for elastic deformation.

4. The strong knife handle that prevents falling off according to claim 1 is characterized by: The mounting mechanism (4) comprises a long hole groove (43), the long hole groove (43) is arranged inside the right side of the knife rod (1), the right side of the long hole groove (43) is arranged to be an opening, a connecting plate (42) is fixedly connected to the left side of the inner wall of the long hole groove (43), a spring (45) is fixedly connected to the surface of the connecting plate (42) on all sides, a connecting arc plate (44) is fixedly connected to the other side of the spring (45), a limiting sphere (46) is fixedly connected to the other side of the connecting arc plate (44), a circular hole groove (41) is arranged on the surface of the knife rod (1), and an annular slot (47) is arranged on the inner ring of the connecting ring (5).

5. The strong knife handle that prevents falling off according to claim 4, characterized in that: The number of the circular hole grooves (41) and the limiting balls (46) is four, and the surface of the limiting balls (46) is plugged into the inside of the annular slot (47).

6. The strong knife handle that prevents falling off according to claim 4, characterized in that: Both sides of the four circular hole grooves (41) are arranged to be open, and the surface of the limiting sphere (46) and the interior of the circular hole groove (41) are inserted through and connected to each other.

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