Locking and fixing mechanism of knife handle

Abstract

The utility model relates to the technical field of machining cutter fixing devices, and discloses a cutter handle locking and fixing mechanism which comprises a cutter shell, the inner surface of the cutter shell is movably connected with a cutter locking shaft in a sleeved mode, a bead groove is formed in the right side of the outer surface of the cutter locking shaft, and a mounting groove is formed in the left end of the cutter locking shaft. The fixing mechanism is arranged on the inner surface of the cutter locking shaft; wherein the fixing mechanism comprises a cutter core. By arranging the cutter locking shaft, the cutter core, the steel ball, the spring and the cutter handle, after the cutter handle is inserted into the cutter shell, the cutter locking rod, the first bolt and the cutter core start to move leftwards under the elastic action of the spring, and the cutter core moves to drive the steel ball, so that the steel ball starts to move towards the clamping groove along the inner surface of the ball groove; finally, the outer surfaces of the steel balls make contact with the inner surfaces of the clamping grooves, at the moment, the cutter handle is fixed to the current position through the steel balls, and therefore the clamping and positioning effect on the cutter handle is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of processing tool fixing devices, and more specifically, to a locking and fixing mechanism for a tool holder. Background Art

[0002] A tool is a tool used for cutting in machining, also known as a cutting tool. The vast majority of tools are for machine use, but there are also hand-held ones. Since the tools used in machining are basically used for cutting metal materials, the term "tool" is generally understood as a metal cutting tool.

[0003] When an operator performs machining, various tools are used to cut the raw materials. However, in the actual machining process, due to the special shape of the tool holder of high-precision machining tools, the most common tool holders for fixing tools can no longer meet the clamping and positioning requirements of high-precision tools, and the procurement price of the special tool holders matching the tools is extremely high. Therefore, a tool holder locking and fixing mechanism with higher positioning accuracy needs to be designed. Summary of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a locking and fixing mechanism for a tool holder, which has the advantage of high positioning accuracy.

[0005] To achieve the above object, the utility model provides the following technical solution: A locking and fixing mechanism for a tool holder, comprising:

[0006] A tool shell, the inner surface of the tool shell is movably sleeved with a tool locking shaft, a bead groove is opened on the right side of the outer surface of the tool locking shaft, and an installation groove is opened at the left end of the tool locking shaft;

[0007] A fixing mechanism, the fixing mechanism is arranged on the inner surface of the tool locking shaft;

[0008] Wherein, the fixing mechanism includes a tool core, the tool core is movably sleeved on the right side of the inner surface of the tool locking shaft, the outer surface of the tool core is movably connected with steel balls located inside the tool locking shaft, the outer surface of the steel balls is movably connected with the inner surface of the bead groove, and when the tool core moves to the left, the steel balls move outward along the inner surface of the bead groove.

[0009] As a preferred technical solution of the utility model, the outer surface of the tool locking shaft is movably connected with a tool holder, the outer surface of the tool holder is movably connected with the inner surface of the tool shell, and a clamping groove located outside the bead groove is opened on the inner surface of the tool holder.

[0010] As a preferred technical solution of the utility model, the left end of the tool core is movably connected with a tool locking rod, and the outer surface of the tool locking rod is movably sleeved with the inner surface of the tool locking shaft.

[0011] As a preferred technical solution of the present utility model, a connection groove is provided on the right surface of the tool core. A first bolt is movably connected to the left side of the inner surface of the connection groove. The left end of the first bolt sequentially penetrates through the tool core and the knife locking rod and extends into the interior of the knife locking rod. The outer surface of the first bolt is threadedly sleeved with the inner surface of the knife locking rod.

[0012] As a preferred technical solution of the present utility model, a spring is fixedly connected to the right side of the inner surface of the installation groove. The left end of the spring is fixedly connected to the outer surface of the knife locking rod.

[0013] As a preferred technical solution of the present utility model, a second bolt is movably sleeved on the left end of the inner surface of the knife shell. The right end of the second bolt sequentially penetrates through the knife shell and the knife locking shaft and extends into the interior of the knife locking shaft. The outer surface of the second bolt is threadedly sleeved with the inner surface of the knife locking shaft.

[0014] As a preferred technical solution of the present utility model, the number of steel balls is four, and the four steel balls have the same size.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] By providing a knife locking shaft, a tool core, steel balls, a spring and a knife handle, when the knife handle is inserted into the interior of the knife shell, due to the elastic force of the spring, the knife locking rod, the first bolt and the tool core will start to move leftward, and the movement of the tool core will drive the steel balls, causing the steel balls to start moving along the inner surface of the ball groove towards the direction of the card slot. Eventually, the outer surface of the steel ball will come into contact with the inner surface of the card slot. At this time, the knife handle will be fixed in the current position by the steel balls, thereby realizing the clamping and positioning effect of the knife handle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present utility model;

[0018] Figure 2 is a cross-sectional structural diagram of the present utility model;

[0019] Figure 3 is a cross-sectional structural diagram of the steel ball of the present utility model;

[0020] Figure 4 is a structural diagram of the tool core of the present utility model.

[0021] In the figure: 1, knife shell; 2, knife locking shaft; 3, ball groove; 4, tool core; 5, steel ball; 6, card slot; 7, connection groove; 8, first bolt; 9, knife locking rod; 10, installation groove; 11, spring; 12, second bolt; 13, knife handle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] As Figures 1 to 4 shown, the present invention provides a locking and fixing mechanism for a tool holder, including:

[0024] A tool shell 1, the inner surface of the tool shell 1 is movably sleeved with a tool locking shaft 2, a bead groove 3 is opened on the right side of the outer surface of the tool locking shaft 2, and an installation groove 10 is opened at the left end of the tool locking shaft 2;

[0025] A fixing mechanism, which is arranged on the inner surface of the tool locking shaft 2;

[0026] Among them, the fixing mechanism includes a tool core 4, the tool core 4 is movably sleeved on the right side of the inner surface of the tool locking shaft 2, the outer surface of the tool core 4 is movably connected with a steel ball 5 located inside the tool locking shaft 2, the outer surface of the steel ball 5 is movably connected with the inner surface of the bead groove 3, and when the tool core 4 moves to the left, the steel ball 5 moves outward along the inner surface of the bead groove 3.

[0027] The inner surface of the bead groove 3 can hold the steel ball 5. When the tool core 4 starts to move to the left, the outer surface of the tool core 4 will squeeze the steel ball 5, causing the steel ball 5 to start moving outward along the inner surface of the bead groove 3. Eventually, the steel ball 5 will protrude outside the tool locking shaft 2, thus playing a role in locking and limiting.

[0028] Among them, the outer surface of the tool locking shaft 2 is movably connected with a tool holder 13, the outer surface of the tool holder 13 is movably connected with the inner surface of the tool shell 1, and a card slot 6 located outside the bead groove 3 is opened on the inner surface of the tool holder 13.

[0029] When the steel ball 5 contacts the inner surface of the card slot 6, the tool holder 13 will be fixed in the current position by the steel ball 5.

[0030] Among them, the left end of the tool core 4 is movably connected with a tool locking rod 9, and the outer surface of the tool locking rod 9 is movably sleeved with the inner surface of the tool locking shaft 2.

[0031] The whole tool locking rod 9 can move left and right along the inner surface of the tool locking shaft 2.

[0032] Among them, a connection groove 7 is opened on the right surface of the tool core 4, a first bolt 8 is movably connected to the left side of the inner surface of the connection groove 7, the left end of the first bolt 8 sequentially passes through the tool core 4 and the tool locking rod 9 and extends into the interior of the tool locking rod 9, and the outer surface of the first bolt 8 is threadedly sleeved with the inner surface of the tool locking rod 9.

[0033] Due to the design of the first bolt 8, the cutter core 4 and the knife locking rod 9 will move together.

[0034] Among them, a spring 11 is fixedly connected to the right side of the inner surface of the installation groove 10, and the left end of the spring 11 is fixedly connected to the outer surface of the knife locking rod 9.

[0035] The elastic force of the spring 11 will cause the whole knife locking rod 9 to move to the left.

[0036] Among them, a second bolt 12 is movably sleeved on the left end of the inner surface of the knife housing 1. The right end of the second bolt 12 sequentially penetrates through the knife housing 1 and the knife locking shaft 2 and extends into the interior of the knife locking shaft 2. The outer surface of the second bolt 12 is threadedly sleeved with the inner surface of the knife locking shaft 2.

[0037] The design of the second bolt 12 enables the operator to disassemble the knife locking shaft 2 from the interior of the knife housing 1.

[0038] Among them, the number of steel balls 5 is four, and the four steel balls 5 have the same size.

[0039] The outer surfaces of the four steel balls 5 are smooth, which can minimize the resistance generated during sliding.

[0040] The working principle and usage process of the present utility model:

[0041] First, the operator pushes the knife locking rod 9 to move to the right. At this time, the cutter core 4 will move to the right along the inner surface of the knife locking shaft 2. The movement of the cutter core 4 will cause the outer surface of the cutter core 4 to no longer squeeze the outer surface of the steel balls 5, so that the four steel balls 5 are in a state of not being stressed. At this time, the operator sleeves the handle 13 into the interior of the knife housing 1. At this time, the four steel balls 5 will enter the interior of the knife locking shaft 2 due to the extrusion of the handle 13. When the right surface of the knife housing 1 comes into contact with the outer surface of the handle 13, the operator releases the knife locking rod 9.

[0042] At this time, under the elastic force of the spring 11, the whole knife locking rod 9 will start to move to the left along the inner surface of the knife locking shaft 2. During this process, the movement of the cutter core 4 will squeeze the four steel balls 5, causing the four steel balls 5 to start to move outward under the limitation of the bead grooves 3. Finally, the outer surface of the steel balls 5 will come into contact with the inner surface of the card slots 6. At this time, the handle 13 will be fixed at the current position due to the cooperation of the steel balls 5 and the card slots 6 and the shape limitation of the knife housing 1.

[0043] It should be noted that in this text, 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 terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0044] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A locking and fixing mechanism for a tool holder, characterized in that It includes: A knife shell (1), on the inner surface of which a lock knife shaft (2) is movably sleeved. On the right side of the outer surface of the lock knife shaft (2), a bead groove (3) is provided, and on the left end of the lock knife shaft (2), a mounting groove (10) is provided. A fixing mechanism, which is arranged on the inner surface of the lock knife shaft (2). Among them, the fixing mechanism includes a knife core (4), which is movably sleeved on the right side of the inner surface of the lock knife shaft (2). On the outer surface of the knife core (4), steel balls (5) located inside the lock knife shaft (2) are movably connected. The outer surface of the steel balls (5) is movably connected to the inner surface of the bead groove (3). When the knife core (4) moves to the left, the steel balls (5) move outwards along the inner surface of the bead groove (3).

2. The locking and fixing mechanism of a tool holder according to claim 1, characterized in that: The outer surface of the lock knife shaft (2) is movably connected to a knife handle (13). The outer surface of the knife handle (13) is movably connected to the inner surface of the knife shell (1). On the inner surface of the knife handle (13), a card slot (6) located outside the bead groove (3) is provided.

3. The locking and fixing mechanism of a tool holder according to claim 1, characterized in that: The left end of the knife core (4) is movably connected to a lock knife rod (9), and the outer surface of the lock knife rod (9) is movably sleeved on the inner surface of the lock knife shaft (2).

4. The locking and fixing mechanism of a tool holder according to claim 1, characterized in that: On the right surface of the knife core (4), a connection groove (7) is provided. On the left side of the inner surface of the connection groove (7), a first bolt (8) is movably connected. The left end of the first bolt (8) sequentially penetrates through the knife core (4) and the lock knife rod (9) and extends into the interior of the lock knife rod (9). The outer surface of the first bolt (8) is threadedly sleeved on the inner surface of the lock knife rod (9).

5. The locking and fixing mechanism of a tool handle according to claim 1, characterized in that: On the right side of the inner surface of the mounting groove (10), a spring (11) is fixedly connected. The left end of the spring (11) is fixedly connected to the outer surface of the lock knife rod (9).

6. The locking and fixing mechanism of a tool holder according to claim 1, characterized in that: On the left end of the inner surface of the knife shell (1), a second bolt (12) is movably sleeved. The right end of the second bolt (12) sequentially penetrates through the knife shell (1) and the lock knife shaft (2) and extends into the interior of the lock knife shaft (2). The outer surface of the second bolt (12) is threadedly sleeved on the inner surface of the lock knife shaft (2).

7. The locking and fixing mechanism of a tool handle according to claim 1, characterized in that: The number of the steel balls (5) is four, and the four steel balls (5) have the same size.

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