High-stability adjustable knife handle

Abstract

The utility model discloses a high-stability adjusting knife handle which comprises a knife handle shell, and a pull rod body and a chuck body which are connected with each other are installed on the knife handle shell. A chuck seat and an adjusting ring are arranged between the chuck body and the knife handle shell, and a chuck meson assembly is arranged between the adjusting ring and the chuck seat; the periphery of the pull rod body is sleeved with an elastic piece set, one end of the elastic piece set abuts against the step of the knife handle shell, and the other end of the elastic piece set abuts against a pull rod nut which is fixedly arranged at the end of the pull rod body. The movable ejector rod assembly is installed in the end, close to the pull rod body, of the knife handle shell, the position of the oil pressure space can be changed in the displacement process of the ejector rod assembly, the position of grease moves relatively slowly and just serves as buffering, but the external force applied by an external power assembly can be kept constant; therefore, the pull rod body is slowly pushed to move, rigid force is converted into soft force, and damage caused by strong collision between the pull rod body and the limiting structure is avoided.

Description

Technical Field

[0001] This utility model belongs to the technical field of machine tool processing equipment, specifically a highly stable adjustable tool holder. Background Technology

[0002] Precision parts require various cutting tools during machining, and these tools are fixed by tool holders. Specifically, the tools are clamped and fixed by a collet, and more specifically, the collet is tightened and loosened by a pull rod. The movement of the pull rod is generally provided by an external power mechanism, such as the published technical document "CN208195677U, a spindle double inclined surface dust seal tool removal and dust prevention structure". When the cylinder is driven, compressed air enters each layer of the cylinder from the bottom groove to do work and push the piston forward, thereby pushing the push rod out and contacting the rear end of the pull rod. The return of the pull rod mainly relies on the elastic element connected to it.

[0003] Based on the above scheme, the tool holder usually has a structure to limit the travel of the connecting rod. The force applied by the cylinder to the connecting rod is very fast and large, which may cause the connecting rod to collide violently with the limiting mechanism, posing a risk of damaging the tool holder. Utility Model Content

[0004] The purpose of this invention is to provide a highly stable adjustable tool holder to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A highly stable adjustable tool holder includes a tool holder housing, wherein a pull rod body and a chuck body are mounted on the tool holder housing and are connected to each other.

[0007] A chuck seat and an adjusting ring are installed between the chuck body and the tool holder housing, and a chuck separator assembly is provided between the adjusting ring and the chuck seat;

[0008] A spring clip assembly is sleeved around the outer periphery of the pull rod body. One end of the spring clip assembly abuts against the step of the handle housing, and the other end abuts against the pull rod nut. The pull rod nut is fixed to the end of the pull rod body.

[0009] A movable push rod assembly is installed inside the end of the handle housing near the pull rod body. One end of the push rod assembly abuts against the pull rod nut, and the other end extends outside the handle housing. A hydraulic space is provided between the push rod assembly and the handle housing, and the hydraulic space is used to store grease.

[0010] A further technical solution is provided in the pull rod body, and a connecting air passage is formed in the puller body and the chuck body, the air passage being connected to the one-way valve.

[0011] In a further technical solution, a limiting nut is provided inside the handle housing, and the limiting nut can abut against the end of the pull rod body.

[0012] In a further technical solution, the push rod assembly includes a push rod body and a pressing block. The push rod body and the pressing block are respectively provided with combined oil seals between themselves and the inner wall of the tool holder housing, and an auxiliary spring is provided between the push rod body and the pressing block.

[0013] In a further technical solution, the handle housing is provided with several adjusting members from the outside to the inside, the adjusting members extend to the adjusting ring and abut against it, and the handle housing is provided with several kimming screws in the transverse direction, the kimming screws abut against the adjusting members.

[0014] In a further technical solution, the adjusting component includes an adjusting nut and an adjusting screw for use. The adjusting nut has a boss on its outer side and a slot above the boss. The slot is used to engage with the end of the screw. The handle housing has a boss that abuts against the boss.

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

[0016] Because the hydraulic space contains grease, the position of the hydraulic space will change during the displacement of the push rod assembly, which will push the grease to change position. The grease moves relatively slowly, which can act as a buffer, but the external force applied by the external power component can remain constant. This achieves the slow pushing of the pull rod body towards it, transforming rigid force into soft force and avoiding strong collision between the pull rod body and the limiting structure, which would cause damage.

[0017] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0018] Figure 1 Cross-section of this utility model Figure 1 .

[0019] Figure 2 Cross-section of this utility model Figure 2 .

[0020] Figure 3 : External structural diagram of this utility model.

[0021] Figure 4 This utility model Figure 1 Enlarged view of part A.

[0022] Reference numerals in the attached drawings: 1-Handle housing, 21-Pull rod body, 22-Pull rod nut, 3-Chuck body, 41-Chuck seat, 42-Adjusting ring, 43-Chuck spacer assembly, 44-Limit nut, 5-Spring assembly, 6-Push rod assembly, 61-Push rod body, 62-Push block, 63-Combination oil seal, 64-Auxiliary spring, 7-Hydraulic space, 81-One-way valve, 82-Air passage, 83-Oil injection screw, 84-Air hole, 91-Adjusting component, 911-Adjusting nut, 912-Adjusting screw, 913-Boss 1, 914-Slot, 915-Boss 2, 92-Jimm screw. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] Please refer to Figure 1-4 ;

[0025] The tool handle of this utility model can reduce the external force applied to the pull rod, enabling it to move at a low speed and reduce the risk of collision. Specifically, it includes a tool handle housing 1, on which a pull rod body 21 and a chuck body 3 are installed and connected to each other. A chuck seat 41 and an adjusting ring 42 are installed between the chuck body 3 and the tool handle housing 1. A chuck spacer assembly 43 is provided between the adjusting ring 42 and the chuck seat 41. The cooperation of the above accessories defines the axial position of the chuck. A spring piece assembly 5 is sleeved on the outer periphery of the pull rod body 21. One end of the spring piece assembly 5 abuts against the step of the tool handle housing 1, and the other end abuts against the pull rod nut 22. The pull rod nut 22 is fixed to the end of the pull rod body 21. A movable push rod assembly 6 is installed in the end of the tool handle housing 1 near the pull rod body 21. One end of the push rod assembly 6 abuts against the pull rod nut 22, and the other end extends outside the tool handle housing 1. A hydraulic space 7 is provided between the push rod assembly 6 and the tool handle housing 1. The hydraulic space 7 is used to store grease.

[0026] Preferably, an oiling screw 83 is installed on the handle housing 1, and the oiling screw 83 is connected to the hydraulic space 7, so as to realize the function of simple oiling and easy maintenance of grease.

[0027] The push rod assembly 6 located on the outside of the tool holder housing 1 is connected to the external power assembly. The external power assembly applies a push force to the push rod assembly 6, thereby pushing the pull rod body 21 and the chuck body 3. At this time, the chuck body 3 is in the pop-out state, which can be used to remove and install the tool. During the movement, the pull rod nut 22 will be displaced, thereby compressing the spring piece assembly 5.

[0028] In addition, since the hydraulic space 7 contains grease, the position of the hydraulic space 7 will also change during the displacement of the push rod assembly 6, which will push the grease to change position. The grease moves relatively slowly, which can act as a buffer, but the external force applied by the external power assembly can remain constant, that is, to slowly push the pull rod body 21 to move towards it, converting rigid force into soft force, and avoiding strong collision between the pull rod body 21 and the limiting structure and damage.

[0029] Preferably, the push rod assembly 6 includes a push rod body 61 and a pressing block 62, wherein the width of the pressing block 62 is greater than the width of the push rod, so a larger space is needed to accommodate the pressing block 62. At this time, the shape of the hydraulic space 7 will also change. In the initial state, the hydraulic space 7 is cylindrical. When the push rod body 61 pushes the pressing block 62 to move, the hydraulic space 7 changes to form a "T" shape. Alternatively, in the initial state, the hydraulic space 7 is "T" shaped. If the hydraulic space 7 expands instantaneously, it will cause negative pressure to be generated inside. Therefore, it is necessary to wait for the grease to move before it can continue to change. Thus, the shape change process of the hydraulic space 7 is slow, which achieves the effect of slowly pushing the pull rod body 21 to move. Of course, in order to avoid grease leakage, a combined oil seal 63 is provided between the push rod body 61 and the pressing block 62 and the inner wall of the handle housing 1, respectively. An auxiliary spring 64 is also provided between the push rod body 61 and the pressing block 62 to assist the push rod body 61 in resetting.

[0030] When the chuck body 3 needs to be reset, the external power component pulls the push rod body 61 backward. At this time, the spring plate assembly 5 will be released and push the top pressure block 62 to move outward. At the same time, the auxiliary spring 64 will also push the push rod body 61 to move. After the superposition of multiple external forces, the reset of the push rod assembly 6 can be accelerated.

[0031] Preferably, the spring piece group 5 is formed by stacking several circular spring pieces, and its outer diameter is adapted to the inner diameter of the tool holder housing 1 for accommodating it. The spring piece group 5 can limit the radial direction of the pull rod body 21, so that the pull rod body 21 maintains the axial position, avoids the swinging situation when disassembling the tool, and improves stability.

[0032] In this embodiment of the utility model, a one-way valve 81 is provided in the pull rod body 21. The inlet of the one-way valve 81 extends to the outside of the tool holder housing 1. An air passage 82 is formed in the pull rod body and the chuck body 3. Of course, an air outlet is provided at the end of the chuck body 3. The air passage 82 is connected to the one-way valve 81. When in use, air is circulated to the one-way valve 81. High-speed gas passes through the air passage 82 and is output from the air outlet of the chuck body 3, so as to blow air when changing tools and keep the chuck clean. Of course, an air hole 84 connected to the one-way valve 81 is provided on the outside of the tool holder housing 1.

[0033] In this embodiment of the utility model, a limiting nut 44 is provided inside the handle housing 1. The limiting nut 44 can abut against the end of the pull rod body 21, thereby limiting the travel of the pull rod body 21.

[0034] In this embodiment of the invention, a plurality of adjusting members 91 are inserted from the outside to the inside of the handle housing 1. The adjusting members 91 extend to the adjusting ring 42 and abut against it. The plurality of adjusting members 91 are used to adjust the position of the adjusting ring 42. Specifically, the position of the adjusting ring 42 is changed by changing the position of the adjusting members 91 inserted into the handle housing 1. Under normal circumstances, the adjusting members 91 and the handle housing 1 are connected by threads. During use, vibration may occur, causing the adjusting members 91 to loosen. In this embodiment, a plurality of kimming screws 92 are inserted laterally through the handle housing 1. The kimming screws 92 abut against the adjusting members 91. The kimming screws 92 provide a lateral force to abut against the adjusting members 91. The external force applied by the kimming screws 92 is at 90° to the direction of rotation of the adjusting members 91, which can avoid interference during use and prevent rotational loosening, making the overall use more stable.

[0035] Furthermore, the adjusting component 91 includes an adjusting nut 911 and an adjusting screw 912 for use. The adjusting nut 911 has a boss 913 on its outer side, and a slot 914 is provided above the boss 913. The slot 914 is used to engage with the end of the screw 92. A channel for the adjusting nut 911 to be inserted is provided in the tool holder housing 1. After the adjusting nut 911 is inserted, the boss 915 provided in the tool holder housing 1 abuts against the boss 913 of the adjusting nut 911, and then the screw 92 is used to fix it. This design can prevent the adjusting nut 911 from sinking, which can play a role in limiting the position. In addition, it can also prevent the adjusting nut 911 from rotating.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims

1. A high-stability adjustable tool holder, comprising a tool holder housing (1), wherein the tool holder housing (1) is fitted with a pull rod body (21) and a collet body (3) connected to each other, characterized in that: A chuck seat (41) and an adjusting ring (42) are installed between the chuck body (3) and the tool holder housing (1), and a chuck spacer assembly (43) is provided between the adjusting ring (42) and the chuck seat (41); A spring clip assembly (5) is sleeved on the outer periphery of the pull rod body (21). One end of the spring clip assembly (5) abuts against the step of the handle housing (1), and the other end abuts against the pull rod nut (22). The pull rod nut (22) is fixed to the end of the pull rod body (21). A movable push rod assembly (6) is installed in one end of the handle housing (1) near the pull rod body (21). One end of the push rod assembly (6) abuts against the pull rod nut (22), and the other end extends outside the handle housing (1). A hydraulic space (7) is provided between the push rod assembly (6) and the handle housing (1), and the hydraulic space (7) is used to store grease.

2. The high-stability adjustable tool holder according to claim 1, characterized in that: The pull rod body (21) is provided with a one-way valve (81), and a connecting air passage (82) is formed in the pull knife body and the chuck body (3), and the air passage (82) is connected to the one-way valve (81).

3. The high-stability adjustable tool holder according to claim 1, characterized in that: The handle housing (1) is provided with a limiting nut (44), which can abut against the end of the pull rod body (21).

4. The high-stability adjustable tool holder according to claim 1, characterized in that: The push rod assembly (6) includes a push rod body (61) and a pressing block (62). The push rod body (61) and the pressing block (62) are respectively provided with a combined oil seal (63) between them and the inner wall of the handle housing (1). An auxiliary spring (64) is provided between the push rod body (61) and the pressing block (62).

5. A high-stability adjustable tool holder according to claim 1, characterized in that: The handle housing (1) is provided with several adjusting members (91) from the outside to the inside. The adjusting members (91) extend to the adjusting ring (42) and abut against it. The handle housing (1) is provided with several kimming screws (92) in the transverse direction. The kimming screws (92) abut against the adjusting members (91).

6. A high-stability adjustable tool holder according to claim 5, characterized in that: The adjusting component (91) includes an adjusting nut (911) and an adjusting screw (912) for use. The adjusting nut (911) has a boss (913) on its outer side and a slot (914) above the boss (913). The slot (914) is used to engage with the end of the kimming screw (92). The handle housing (1) has a boss (915) that abuts against the boss (913).

Images