Thermal expansion knife handle with quick locking function

Abstract

The utility model relates to the technical field of thermal expansion knife handles, and discloses a thermal expansion knife handle with a quick locking function, which comprises a knife handle chuck, the bottom end of the knife handle chuck is fixedly connected with a fixed ring I, the left end and the right end of the fixed ring I are fixedly connected with sliding chute blocks, the interiors of the two sliding chute blocks are connected with sliding blocks in a sliding manner, and the sliding blocks are fixedly connected with the fixed ring I; the top ends of the sliding blocks are fixedly connected with pressing plates, the bottom ends of the pressing plates are fixedly connected with moving frames, the close ends of the two moving frames are fixedly connected with a double-head hydraulic machine, sliding shafts are slidably connected into the moving frames, and the left ends and the right ends of the sliding shafts are fixedly connected with limiting plates. The bottom end of the first fixing ring is fixedly connected with a locking ring. According to the tool holder clamping device, the pressing plate is driven by the double-head hydraulic machine to move left and right to clamp the heated tool holder chuck in which a tool bit is inserted, and meanwhile, the sliding block is driven by the pressing plate to slide in the sliding groove block, so that the effect of rapidly clamping a tool is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat expansion tool shank technical field especially, it relates to a heat expansion tool shank with quick locking function. BACKGROUND

[0002] Tool shank is the key component in machine tool processing, and it mainly plays the role of connecting machine tool spindle and tool. It needs to accurately adapt machine tool spindle, and through the close cooperation of specific connecting structure such as tool shank taper handle part and the taper hole of machine tool spindle, it can ensure that torque can be stably transmitted in the high-speed rotation process, the tool shank is provided with tool clamping hole inside, and its precision requirement is very high, and it is firmly clamped to tool through the heat expansion cold shrink principle or mechanical clamping, guarantees the stability of tool when milling, drilling, turning and other processing operations, makes the machining precision and surface quality meet the requirements, and is widely used in metal cutting processing, precision mould manufacturing, aerospace parts processing, automobile parts manufacturing and electronic equipment manufacturing and numerous fields.

[0003] Heat expansion tool shank is an advanced tool clamping device, and is mainly applied to the field of mechanical processing. Its core principle is heat expansion cold shrink, and the tool shank main body made of special alloy material is provided with high-precision tool clamping hole inside. When installing tool, the clamping part of tool shank is uniformly expanded through heating element, at this time, tool can be smoothly inserted into the clamping hole, and then the tool shank is cooled through the cooling channel, so that the tool is firmly clamped by the powerful radial clamping force generated by the tool shank. This tool shank plays a key role in metal cutting processing, precision mould manufacturing, aerospace and automobile parts processing and numerous high-precision processing occasions due to the advantages of high precision, high rigidity and good balance performance.

[0004] The existing part of heat expansion tool shank needs to wait for the clamping part of tool shank to cool down when clamping tool, so that the clamping hole expanded after being heated can be locked to clamp tool, and the working efficiency is influenced, and therefore the heat expansion tool shank with quick locking function is provided to solve the above problems. UTILITY MODEL CONTENT

[0005] In order to make up for the above shortcomings, the utility model provides a heat expansion tool shank with quick locking function, and aims at improving the problem of slow tool shank clamping in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] The utility model relates to a hot expansion tool shank with quick locking function, including tool shank chuck, the bottom fixed connection of tool shank chuck has fixed ring no.

[0008] As a further description of the above technical solution:

[0009] The dismounting assembly comprises a fixed ring two, two fixed blocks are fixedly connected in the fixed ring two, an insertion block is slidably connected outside the fixed blocks, and a tool shank taper handle is fixedly connected to the bottom of the insertion block.

[0010] As a further description of the above technical solution:

[0011] A hole is formed in the inside of the tool shank chuck, and a hole is formed in the inside of the fixed ring no.

[0012] As a further description of the above technical solution:

[0013] A sliding groove is formed in the inside of the sliding groove block, and the bottom of the pressing plate is slidably connected to the top of the sliding groove block.

[0014] As a further description of the above technical solution:

[0015] A hole is formed in the inside of the locking ring, and a groove is formed in the front end of the fixed ring no.

[0016] As a further description of the above technical solution:

[0017] A hole is formed in the inside of the tool shank taper handle, and a hole is formed in the inside of the fixed ring no.

[0018] As a further description of the above technical solution:

[0019] The top of the fixed ring two is fixedly connected to the bottom of the locking ring, and an insertion slot is formed in the inside of the fixed ring two.

[0020] As a further description of the above technical solution:

[0021] The outside of the insertion block is slidably connected in the inside of the fixed ring two, and a groove is formed in the front end of the fixed ring two.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the utility model, through the double -end hydraulic machine drive two motion frame left and right movement, motion frame drive the pressing plate left and right movement to the handle holder after heating inside the cutter holder is inserted to the cutter handle is clamped, simultaneously the pressing plate drive sliding block in the inside sliding groove block, make the sliding groove block support the pressing plate simultaneously to the pressing plate is located, the motion frame is in the outside left and right of the slide axle simultaneously, avoid the movement of the pressing plate and the motion frame deviate, so that the effect of quick clamping cutter is realized.

[0024] 2. In the utility model, through the cutter handle taper handle drive the plug -in block upward movement, make the plug -in block insert the slot inside that the fixed ring two bottom end is set, rotate the cutter handle taper handle, the cutter handle taper handle drive the plug -in block in the inside of fixed ring two slide, the plug -in block is in the top end of the fixed block when sliding, when the plug -in block is slid to and fixed block is engaged, through the plug -in block is fixed in the fixed ring two bottom end cutter handle taper handle, so that the effect of quick dismounting cutter handle taper handle is realized. DRAWINGS

[0025] Fig. 1 It is the three -dimensional schematic view of the heat expansion cutter handle with quick locking function that the utility model proposes;

[0026] Fig. 2 It is the structure schematic view of the pressing plate of the heat expansion cutter handle with quick locking function that the utility model proposes;

[0027] Fig. 3 It is the structure schematic view of the cutter handle taper handle of the heat expansion cutter handle with quick locking function that the utility model proposes;

[0028] Fig. 4 It is the structure schematic view of the cutter handle holder of the heat expansion cutter handle with quick locking function that the utility model proposes.

[0029] Legend:

[0030] 1, cutter handle holder;2, fixed ring one;3, sliding groove block;4, sliding block;5, pressing plate;6, motion frame;7, double -end hydraulic machine;8, slide axle;9, limit plate;10, locking ring;11, fixed ring two;12, fixed block;13, plug -in block;14, cutter handle taper handle. DETAILED DESCRIPTION

[0031] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0032] Refer to Figs. 1-2The utility model provides an embodiment with quick locking function's thermal expansion tool shank, including tool shank chuck 1, tool shank chuck 1 is made of special thermal expansion alloy material, and this material has excellent thermal expansion and contraction performance, can even expand when being heated, thereby tightly wraps the cutting tool, effectively promotes the stability and reliability of cutting tool clamping.

[0033] The left and right ends of the fixed ring one 2 are fixedly connected with sliding groove blocks 3, the sliding groove blocks 3 are precisely designed in internal structure, have very low friction coefficient, can make relevant components smoothly slide and reduce energy loss, the interiors of the two sliding groove blocks 3 are slidably connected with sliding blocks 4, the fitting degree between the sliding blocks 4 and the sliding groove blocks 3 is very high, so that the two are closely matched without gap, the top end of the sliding block 4 is fixedly connected with a pressing plate 5, the pressing plate 5 is made of high-quality hard alloy material, is hard in texture and not easy to deform, can evenly transmit pressure to the tool shank chuck 1, the bottom end of the pressing plate 5 is fixedly connected with a moving frame 6, the moving frame 6 has a good mechanical structure design, can effectively transmit power to relevant components.

[0034] The proximal ends of the two moving frames 6 are fixedly connected with double-head hydraulic machines 7, the double-head hydraulic machines 7 have high-precision pressure control capability, can accurately adjust the size of output pressure, the interiors of the moving frames 6 are slidably connected with sliding shafts 8, the surfaces of the sliding shafts 8 are subjected to special polishing treatment, greatly reduce the resistance when the moving frames 6 slide, the left and right ends of the sliding shafts 8 are fixedly connected with limit plates 9, the limit plates 9 can accurately limit the movement range of the moving frames 6, prevent faults caused by overtravel, the bottom end of the fixed ring one 2 is fixedly connected with a locking ring 10, the locking ring 10 can be more stable when the thermal expansion tool shank is installed in relevant devices.

[0035] Referring to Figs. 3-4 The dismounting assembly comprises a fixed ring two 11, the fixed ring two 11 is made of high-strength stainless steel material, has excellent corrosion resistance and structural stability, can be used for a long time without being deformed and damaged in various complex environments.

[0036] The interiors of the fixed ring two 11 are fixedly connected with two fixed blocks 12, the fixed blocks 12 are subjected to precise machining and heat treatment process, the surface hardness is very high, ensures that the shape and dimensional accuracy can still be maintained during the frequent sliding friction process of relevant components.

[0037] The external sliding connection of the fixed block 12 is connected with the plug block 13, and the cooperation gap of the plug block 13 with the fixed block 12 is very small, so that the plug block 13 can be accurately positioned and smoothly moved when sliding, and the bottom end of the plug block 13 is fixedly connected with the tool holder taper shank 14, which is made of high-quality diamond and has good rigidity and toughness, and can effectively transmit power and not easily break when bearing large cutting force.

[0038] Referring to Figs. 2-4 The inside of the tool holder chuck 1 is provided with a hole, and the hole wall is finely ground and treated, having very high smoothness, effectively reducing the friction resistance when the tool is inserted, so that the tool can smoothly enter the inside of the tool holder chuck 1 and tightly fit, ensuring the stability and concentricity of the tool after installation. The inside of the fixed ring one 2 is provided with a hole, which provides reasonable layout space for the connection and transmission parts of the related structure, ensures the connection between the parts is tight and orderly, and helps the force transmission and structural stability of the whole tool holder system. The inside of the sliding groove block 3 is provided with a sliding groove, which is coated with a special wear-resistant material, which can greatly reduce the wear of the sliding block 4 when sliding, and can ensure that the sliding block 4 always maintains a smooth and smooth movement state during long-time and high-frequency sliding, effectively prolonging the service life of the sliding groove block 3 and the sliding block 4;

[0039] The bottom end of the pressing plate 5 is slidingly connected to the top end of the sliding groove block 3, and this sliding connection mode enables the pressing plate 5 to obtain stable support during movement, while having flexible horizontal movement ability, so as to accurately apply pressure to the tool holder chuck 1. The inside of the locking ring 10 is provided with a hole, and the size accuracy of the hole is strictly controlled, and cooperates with other parts just right, which can increase the stability of the tool fixation. The front end of the fixed ring one 2 is provided with a groove, and the design of the groove enables the tool holder to be better fixed with the related device. The inside of the tool holder taper shank 14 is provided with a hole, and the hole diameter and the quality of the inner wall directly affect the cooperation effect with the tool and the efficiency of power transmission. The inside of the fixed ring two 11 is provided with a hole, which together with the holes of other parts forms a complete internal channel system, which can effectively fix the tool;

[0040] The top end of the fixed ring two 11 is fixedly connected to the bottom end of the locking ring 10, and the connection is achieved by using a high-strength connection process, such as precise welding or a special threaded connection structure, to ensure the firmness and reliability of the connection, and to make the structure of the entire tool holder more integral. The fixed ring two 11 is internally provided with a slot, and the shape and size of the slot are perfectly matched with the plug 13 to ensure the tightness and stability when the plug 13 is inserted, effectively preventing the plug 13 from accidentally falling out during work. The plug 13 is externally slidably connected to the inside of the fixed ring two 11, and the sliding fit between the plug 13 and the fixed ring two 11 is carefully designed to ensure that the plug 13 can be smoothly slid to achieve the installation and disassembly functions, so that the tool holder taper shank 14 is stably installed on the tool holder. The front end of the fixed ring two 11 is provided with a groove, which has higher stability when the tool holder is installed inside the related device.

[0041] Working principle: when the hot expansion tool holder is needed to clamp the tool, the tool holder chuck 1 is heated by the worker, and after heating is completed, the tool is inserted into the hole in the tool holder chuck 1, at this time the double-head hydraulic machine 7 is started, the double-head hydraulic machine 7 drives the two moving frames 6 to move left and right, and the moving frames 6 slide left and right outside the slide shaft 8, the moving frames 6 are guided by the slide shaft 8, and the over-movement of the moving frames 6 is avoided by the limiting plate 9, the moving frames 6 drive the pressing plates 5 to move left and right, and the pressing plates 5 drive the sliding blocks 4 to slide left and right inside the sliding groove blocks 3, supporting the pressing plates 5 and the moving frames 6 without hindering the movement of the pressing plates 5, when the two pressing plates 5 are close to each other and are attached to the outside of the tool holder chuck 1, uniform external pressure can be applied to the tool holder chuck 1 to accelerate the clamping process of the tool.

[0042] When the tool holder taper shank 14 needs to be replaced due to different needs of the related device, the top end of the tool holder taper shank 14 is attached to the bottom end of the fixed ring two 11, and the plug 13 is inserted into the slot at the bottom end of the fixed ring two 11, when the plug 13 is completely inserted into the fixed ring two 11, the tool holder taper shank 14 is turned, the plug 13 is driven by the tool holder taper shank 14 to slide inside the fixed ring two 11 and on the top end of the fixed block 12, when the plug 13 slides to be engaged with the fixed block 12, the installation of the tool holder taper shank 14 is completed.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present application and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacements for some technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A thermally expanded tool holder with a quick-locking function, comprising a tool holder collet (1), characterized in that: The bottom end of the tool holder chuck (1) is fixedly connected to a fixing ring (2). Both the left and right ends of the fixing ring (2) are fixedly connected to sliding blocks (3). Both sliding blocks (3) are slidably connected to sliders (4). The top end of the sliders (4) is fixedly connected to a pressure plate (5). The bottom end of the pressure plate (5) is fixedly connected to a motion frame (6). The two motion frames (6) are fixedly connected to a double-headed hydraulic press (7) at their adjacent ends. The inside of the motion frame (6) is slidably connected to a sliding shaft (8). Both the left and right ends of the sliding shaft (8) are fixedly connected to limit plates (9). The bottom end of the fixing ring (2) is fixedly connected to a locking ring (10). The bottom end of the locking ring (10) is fixedly connected to a disassembly assembly.

2. A thermal expansion knife handle with a quick-locking function according to claim 1, characterized in that: The assembly and disassembly assembly includes a second fixing ring (11), which is internally fixedly connected to two fixing blocks (12). The fixing blocks (12) are externally slidably connected to an insert block (13), and the bottom end of the insert block (13) is fixedly connected to a knife handle cone shank (14).

3. A thermal expansion knife handle with a quick-locking function according to claim 1, characterized in that: The tool holder chuck (1) has a hole inside, and the fixing ring (2) has a hole inside.

4. A thermal expansion knife handle with a quick-locking function according to claim 1, characterized in that: The sliding block (3) has a sliding groove inside, and the bottom end of the pressure plate (5) is slidably connected to the top end of the sliding block (3).

5. A thermal expansion knife handle with a quick-locking function according to claim 1, characterized in that: The locking ring (10) has a hole inside, and the front end of the fixing ring (2) has a groove.

6. A thermal expansion knife handle with a quick-locking function according to claim 2, characterized in that: The inside of the knife handle cone (14) is provided with a hole, and the inside of the fixing ring (11) is provided with a hole.

7. A thermal expansion tool holder with a quick-locking function according to claim 2, characterized in that: The top end of the second fixing ring (11) is fixedly connected to the bottom end of the locking ring (10), and a slot is provided inside the second fixing ring (11).

8. A thermal expansion knife holder with a quick-locking function according to claim 2, characterized in that: The external part of the insert (13) is slidably connected to the inside of the second fixing ring (11), and the front end of the second fixing ring (11) has a groove.

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