Tool shank end cap and retention system

Abstract

The utility model relates to a kind of handle end cover and holding system, compared with prior art, the handle end cover provided in the utility model includes side wall and end wall, side wall is used to accommodate chuck and connect handle main body;End wall is set to one end of side wall, for blocking the oil chip generated in processing process;Hole is provided on end wall, for accommodating tool;Wherein, annular clamping groove and buckle are formed by height difference in side wall inner surface, clamping groove is used to accommodate chuck end, buckle is used to embed the ring groove of chuck, threaded air slot, internal thread and dustproof protection groove are sequentially set on the side of buckle away from clamping groove, the inner surface of clamping groove is inclined plane or plane.Side wall accommodates chuck in tool system and connects handle main body, by setting end wall in one end of side wall, dust, chip and cutting oil can be effectively blocked to enter the internal space of side wall in processing process, reduce the pollution of chuck and handle main body.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to a tool holder end cap and a clamping system. Background Technology

[0002] With the rapid development of modern machining, machining technology has also advanced rapidly, giving rise to many advanced machining methods, such as micro-machining technology and precision and ultra-precision machining technology. Therefore, the cutting tools used in machining have high requirements.

[0003] Currently, in the machining of graphite and alloys, especially in the machining of small holes, graphite dust, alloy dust, and iron filings are inevitably generated. These dust and iron filings can enter the tooling system, and over time, this will affect the tooling system's lifespan and machining accuracy. Dust prevention plays a decisive role in the efficiency and accuracy of machining.

[0004] Therefore, it is necessary to develop a new type of tool holder end cap and clamping system to improve some of the problems existing in the related technologies. Summary of the Invention

[0005] The purpose of this invention is to provide a tool holder end cap and a clamping system that can reduce the amount of oil debris generated during machining entering the tool system.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] The tool holder end cap provided by this utility model includes a side wall and an end wall. The side wall is used to accommodate a collet and connect to the tool holder body. The end wall is located at one end of the side wall and is used to block oil shavings generated during processing. The end wall has a hole for accommodating the tool. An annular groove and a buckle are formed on the inner surface of the side wall by a height difference. The groove is used to accommodate the end of the collet, and the buckle is used to embed into the annular groove of the collet. On the side of the buckle facing away from the groove, a threaded empty tool groove, an internal thread, and a dustproof protection groove are arranged in sequence. The inner surface of the groove is a bevel or a plane.

[0008] Furthermore, the end cap of the tool holder also includes a sealing element, which is annular, with one end at least partially covering the hole in the end wall and the other end extending and protruding from the inner surface of the end wall; the sliding element is movably disposed on the inner surface of the end wall for moving the sealing element to abut against the side of the tool.

[0009] Furthermore, the tool holder end cap also includes a driving member disposed on the inner side of the side wall, for moving under the push of the collet during installation; the driving member and the sliding member abut against each other through an abutting inclined surface, the abutting inclined surface being disposed on the driving member or the sliding member, for generating a lateral component force to move the sliding member.

[0010] Furthermore, the driving member is annular, and the abutting inclined surface is an inner conical surface; at least three sliding members are arranged circumferentially around the hole in the end wall and abut against the inner conical surface together.

[0011] Furthermore, the sealing element includes an interconnected cylindrical portion and a planar portion, the cylindrical portion being fitted into the hole of the end wall and the drive member, and the planar portion being laid on the end face of the drive member facing away from the sliding member.

[0012] Furthermore, the inner surface of the end wall is provided with a sliding groove, and the sliding member is disposed in the sliding groove.

[0013] Furthermore, a number of balls are provided at the bottom of the sliding groove to create rolling friction in the sliding component.

[0014] Furthermore, an annular groove and a buckle are formed on the inner surface of the side wall by a height difference. The groove is used to accommodate the end of the collet, and the buckle is used to embed into the annular groove of the collet.

[0015] Furthermore, a threaded slot, an internal thread, and a dustproof protection groove are sequentially provided on the side of the buckle facing away from the slot.

[0016] Furthermore, the inner surface of the slot is an inclined plane or a flat plane.

[0017] The tool handle end cap provided by this utility model includes: a collet, a tool handle body, and the aforementioned tool handle end cap.

[0018] Compared with related technologies, the present invention has the following beneficial effects:

[0019] 1. The side wall of the tool holder end cap provided by this utility model is used to accommodate a collet and connect to the tool holder body; the end wall is set at one end of the side wall, and the end wall is provided with a hole for accommodating the tool; wherein, an annular groove and a buckle are formed on the inner surface of the side wall by a height difference, the groove is used to accommodate the end of the collet, and the buckle is used to embed into the annular groove of the collet. On the side of the buckle facing away from the groove, a threaded empty tool groove, an internal thread and a dustproof protection groove are sequentially provided. The inner surface of the groove is a bevel or a plane. Since the end wall is set at one end of the side wall, it can effectively block dust, chips and cutting oil from entering the internal space of the side wall during the processing, reducing the contamination of the collet and the tool holder body.

[0020] 2. Furthermore, by covering the hole in the end wall with the annular seal and extending it into the side wall, the seal can be pushed against the side of the tool by the sliding member, thus forming a certain sealing effect, further protecting the tool system, and helping to improve the overall life of the tool system and maintain machining performance. In addition, since different tools have different diameters, pushing the seal against the side of the tool by the sliding member can prevent dust, oil and chips from the tool system with tools of different sizes, making the protective effect of the tool system compatible.

[0021] 3. This utility model uses an inclined surface to abut the driving component and the sliding component, and utilizes the thrust of the collet during installation to enable the driving component to move the sliding component to the side of the tool. This structure is simple, easy to assemble, and helps to improve the efficiency and reliability of the operation.

[0022] 4. In this utility model, at least three sliding members are arranged circumferentially, and at least three sliding members are simultaneously driven radially to the side of the tool by the inner conical surface of the annular driving member, which helps to further improve the sealing effect at the side of the tool.

[0023] 5. The sealing element in this utility model includes a cylindrical part and a flat part that are connected to each other. The cylindrical part is fitted into the hole of the end wall and the driving element, and the flat part is laid on the driving element. When the collet abuts against the driving element, the flat part can form a seal between the collet and the driving element, preventing the oil debris on the outer side of the cylindrical part from continuing to move to the collet through the hole of the driving element.

[0024] 6. This utility model, by setting the sliding member in the sliding groove on the inner surface of the end wall and setting the ball at the bottom of the sliding groove, helps to reduce the friction when the sliding member moves and facilitates the flexible movement of the sliding member. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the tool holder end cap and the collet in an embodiment of this utility model;

[0026] Figure 2 for Figure 1 The cross-sectional view shown shows the tool holder end cap and collet mating together;

[0027] Figure 3 for Figure 1 A schematic diagram showing the structure in which the end, sidewall, and sliding component mate;

[0028] Figure 4 for Figure 1 The diagram shows the structural arrangement of the collet, seal, drive, and sliding components.

[0029] Figure 5 This is a sectional view of the side wall.

[0030] Figure label:

[0031] 1. Side wall; 11. Slot; 12. Snap-in; 13. Threaded empty slot; 14. Internal thread; 15. Dustproof protection slot; 2. End wall; 21. Sliding groove; 22. Ball bearing; 3. Seal; 31. Cylindrical part; 32. Flat part; 4. Sliding part; 5. Collet; 6. Driving part; 61. Abutting bevel; 7. Cutting tool. Detailed Implementation

[0032] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0033] Example 1

[0034] This utility model embodiment provides a knife handle end cap, see reference Figure 1 and Figure 2 The tool holder end cap includes: a side wall 1, an end wall 2, a seal 3, and a sliding member 4; the side wall 1 is used to accommodate a collet 5 and connect to the tool holder body (not shown in the figure); the end wall 2 is disposed at one end of the side wall 1 to block oil shavings generated during the machining process; the end wall 2 is provided with a hole for accommodating a tool 7; the seal 3 is annular, with one end at least partially covering the hole of the end wall 2, and the other end extending and protruding from the inner surface of the end wall 2; the sliding member 4 is movably disposed on the inner surface of the end wall 2 to allow the seal 3 to abut against the side of the tool 7 after movement.

[0035] In this embodiment, refer to Figure 1 The side wall 1 is cylindrical, and the end wall 2 is located at one end of the side wall 1. The side wall 1 and the end wall 2 together form the main structure of the end cap. The cutting tool 7 is inserted into and connected to the tool holder body through the collet 5. The inner surface of the other end of the side wall 1 is provided with a threaded hole, so that the tool holder end cap and the tool holder body are connected by a thread to complete the assembly of the cutting tool system. One end of the cutting tool 7 extends to the outside of the tool holder end cap through the hole on the end wall 2.

[0036] In this embodiment, refer to Figure 2 The sealing element 3 includes a cylindrical part 31 and a flat part 32 connected to each other. The cylindrical part 31 is fitted into the hole of the end wall 2 and the drive member 6, and the flat part 32 is laid on the end face of the drive member 6 facing away from the sliding member 4.

[0037] In this embodiment, refer to Figure 2The sealing element 3 is cylindrical, with one end extending into the hole in the end wall 2 and the other end protruding from the inner surface of the end wall 2, so that the sliding element 4 and the sealing element 3 located on the inner surface of the end wall 2 are at the same height, specifically at the same height as the cylindrical part 31, so that after movement, it can contact the cylindrical part 31 on the sealing element 3 and abut against the side of the cutter 7, so that the side of the cutter 7 forms a seal at the abutment.

[0038] In this embodiment, since the seal 3 has a certain elasticity, when the drive member 6 and the collet 5 squeeze the horizontal part 32, the horizontal part 32 will deform, making the inner diameter of the hole in the center of the horizontal part 32 smaller, thus forming a seal between the horizontal part 32 and the side of the cutter 7.

[0039] In this embodiment, the planar portion 32 is annular, and the hole at the center of the planar portion 32 is connected to the internal space of the cylindrical portion 31.

[0040] In this embodiment, the end of the slider 4 that contacts the seal 3 is semi-circular, so that the elastic seal 3 deforms according to the shape of the end of the slider 4, and the seal 3 fits the side of the cylindrical cutter 7 better.

[0041] In this embodiment, refer to Figure 2 The end cap of the tool holder also includes a driving member 6, which is disposed on the inner side of the side wall 1 and is used to move under the push of the collet 5 during installation; the driving member 6 and the sliding member 4 abut against each other through the abutting inclined surface 61, which is disposed on the driving member 6 or the sliding member 4 and is used to generate a lateral component force to move the sliding member 4.

[0042] In this embodiment, refer to Figure 2 The collet 5 is embedded and fixed at the end of the tool holder body (not shown in the figure). When the tool holder end cap and the tool holder body are connected to each other, the drive member 6 and the collet 5 move towards each other and come into contact. Finally, an axial thrust is applied to the drive member 6, causing the drive member 6 to abut against the sliding member 4. Since there is an abutting inclined surface 61 between the two, the axial thrust generates a lateral component force, causing the sliding member 4 to move radially towards the hole on the end wall 2 that accommodates the tool 7, thereby pushing the sealing member 3 to abut against the side of the tool 7.

[0043] In this embodiment, the abutting slope 61 can be provided on the sliding member 4, or on the driving member 6, or both can be provided with the abutting slope 61.

[0044] In this embodiment, refer to Figure 4 The driving component 6 is annular, and the abutting inclined surface 61 is an inner conical surface; at least three sliding components 4 are arranged circumferentially with the hole in the end wall 2 as the center, and abut against the inner conical surface together.

[0045] It should be noted that, since the driving component 6 is annular, the inner conical surface of the abutting inclined surface 61 does not have the apex of the inner cone and the surface around the apex.

[0046] In this embodiment, the outer diameter of the drive member 6 is slightly smaller than the inner diameter of the side wall 1, so that the drive member 6 can move flexibly in the side wall 1. The inner diameter of the drive member 6 is slightly larger than the outer diameter of the cutter 7. A portion of the sealing member 3 is accommodated between the hole of the drive member 6 and the side of the cutter 7.

[0047] In this embodiment, the angle between the abutting inclined surface 61 and the sliding direction of the slider 4 is greater than 45° to obtain a larger lateral force component.

[0048] In other embodiments, the seal 3 may also completely cover the hole in the end wall 2, or extend from the hole in the end wall 2 to the outside of the end wall 2.

[0049] In this embodiment, refer to Figure 3 The inner surface of the end wall 2 is provided with a sliding groove 21, and the sliding member 4 is disposed in the sliding groove 21.

[0050] In this embodiment, refer to Figure 5 On the inner surface of the side wall 1, an annular groove 11 and a buckle 12 are formed by the height difference. The groove 11 is used to accommodate the end of the collet 5, and the buckle 12 is used to embed into the annular groove of the collet 5.

[0051] In this embodiment, refer to Figure 5 On the side of the buckle 12 facing away from the slot 11, there are sequentially provided threaded empty slot 13, internal thread 14 and dustproof protection slot 15, and an O-ring is provided in the dustproof protection slot 15.

[0052] In this embodiment, refer to Figure 5 The inner surface of the slot 11 is flat to match the collet 5, whose outer end circle is flat.

[0053] This utility model embodiment also provides a clamping system, including a collet 5, a knife handle body, and the aforementioned knife handle end cap.

[0054] In this embodiment, the materials of the end wall 2 and the side wall 1 are subjected to ultra-low temperature -196℃ cryogenic and thermal aging treatment during processing to improve the strength and toughness of the materials, and the end cap accuracy is ≤0.005m.

[0055] In this embodiment, the material of the collet 5 undergoes cryogenic treatment at -196℃ and thermal aging during processing to improve the strength and toughness of the material, and the accuracy of the collet 5 is ≤0.005m.

[0056] In this embodiment, the main body of the tool holder is made of 20CrMnTi material, and is subjected to ultra-low temperature -196℃ deep cryogenic and thermal aging treatment during processing to improve the strength and toughness of the material. The inner taper accuracy of the tool holder is ≤0.002m.

[0057] In this embodiment, the O-ring is made of high-quality nitrile material, which has excellent oil resistance, high wear resistance, and good heat resistance.

[0058] In this embodiment, the end wall 2 and the side wall 1 can be connected using detachable fasteners, such as screws, to facilitate assembly. During assembly, the tool holder end cap assembly can be inserted from the side wall 1 through the opening on the side facing away from the collet 5 and the tool holder body.

[0059] Example 2

[0060] This embodiment provides a tool holder end cap, whose basic structure is the same as that of embodiment 1. The difference is that the inner surface of the slot 11 is inclined to match the collet 5 whose outer end is inclined. A conical empty tool is also provided in front of the slot 11.

[0061] Example 3

[0062] This embodiment provides a knife handle end cap, the basic structure of which is the same as that of Embodiment 1, as shown below. Figure 2 and Figure 3 The improvement lies in the fact that several balls 22 are provided at the bottom of the sliding groove 21, so that the sliding part 4 forms rolling friction.

[0063] In this embodiment, the inner surface of the end cap is provided with a positioning hole, and the ball bearing 22 is disposed in the positioning hole. The ball bearing 22 is connected and positioned by a retainer to limit the movement position of the ball bearing 22.

[0064] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0065] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0066] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0067] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0068] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0069] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A knife handle end cap, characterized in that, include: Side wall (1) for accommodating collet (5) and connecting to the tool holder body; End wall (2), located at one end of the side wall (1), is used to block oil shavings generated during the processing; The end wall (2) is provided with holes for accommodating the cutting tool (7); Among them, an annular groove (11) and a buckle (12) are formed on the inner surface of the side wall (1) by a height difference. The groove (11) is used to accommodate the end of the collet (5), and the buckle (12) is used to embed into the annular groove of the collet (5). On the side of the buckle (12) facing away from the groove (11), a threaded empty groove (13), an internal thread (14) and a dustproof protection groove (15) are arranged in sequence. The inner surface of the groove (11) is a slope or a plane.

2. The end cap for the knife handle according to claim 1, characterized in that, It also includes a seal (3) and a slider (4); the seal (3) is annular, with one end at least partially covering the hole in the end wall (2), and the other end extending and protruding from the inner surface of the end wall (2); the slider (4) is movably disposed on the inner surface of the end wall (2) and is used to make the seal (3) abut against the side of the tool (7) after movement.

3. The end cap for the knife handle according to claim 2, characterized in that, It also includes a drive member (6), which is disposed inside the side wall (1) and is used to move under the push of the collet (5) during installation; the drive member (6) and the sliding member (4) abut against each other through an abutting inclined surface (61), which is disposed on the drive member (6) or the sliding member (4) and is used to generate a lateral component force to move the sliding member (4).

4. The end cap for the knife handle according to claim 3, characterized in that, The driving member (6) is annular, and the abutting inclined surface (61) is an inner conical surface; at least three sliding members (4) are arranged circumferentially around the hole in the end wall (2) and abut against the inner conical surface together.

5. The end cap for the knife handle according to claim 3, characterized in that, The sealing element (3) includes a cylindrical part (31) and a flat part (32) connected to each other. The cylindrical part (31) is fitted into the hole of the end wall (2) and the drive member (6), and the flat part (32) is laid on the side end face of the drive member (6) facing away from the sliding member (4).

6. The end cap for the knife handle according to claim 2, characterized in that, The inner surface of the end wall (2) is provided with a sliding groove (21), and the sliding member (4) is disposed in the sliding groove (21).

7. The end cap for the knife handle according to claim 6, characterized in that, The bottom of the sliding groove (21) is provided with a number of balls (22) so that the sliding member (4) forms rolling friction.

8. A blessing system, characterized in that, include: The collet (5), the handle body, and the handle end cap as described in any one of claims 1 to 7.

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