Chuck for quickly installing and converting cutter bar

Abstract

The utility model provides a chuck for quickly installing and converting a cutter bar, which comprises a chuck, a jacket and a cutter, a cutter handle is arranged at the upper part of the cutter, a slot for inserting the cutter handle is arranged at the bottom of the chuck, a plurality of through holes are annularly arranged on the chuck, the cross section of each through hole is circular, the two sides of each through hole are vertically and flatly cut, and the cutter handle is inserted into the slot. A fixing ball is contained in each through hole, the diameter of the fixing balls is smaller than that of the through holes and larger than the height of inlets and outlets in the two sides of the through holes, a plurality of fixing holes corresponding to the through holes in a one-to-one mode are annularly formed in the cutter handle, and the clamping sleeve is vertically matched outside the clamping head in a sliding mode. When the tool is assembled and disassembled, the clamping sleeve only needs to slide up and down, the radial position of the fixing ball is changed by sliding the clamping sleeve up and down, so that the fixing hole in the tool handle is locked or separated from the fixing hole, the switching between the disassembly and the assembly of the tool is rapidly completed, and compared with a traditional mode that tools such as a wrench are adopted for assisting in disassembly, the assembly switching speed is greatly increased.

Description

Technical Field

[0001] This utility model relates to the field of machining tool technology, specifically to a chuck for quick installation and conversion of tool holders. Background Technology

[0002] In the machinery manufacturing industry, automatic feed drills are a commonly used advanced tool. When operating an automatic feed drill, a tool chuck is required to connect the drill's spindle to the cutting tool. One end of the tool chuck is connected to the spindle, and the other end is connected to the cutting tool. In actual use, due to factors such as the thickness of the material being machined, the different fixtures, tooling structures, and process requirements, automatic feed drills often need to be used with cutting tools of different specifications. Therefore, frequent tool changes are unavoidable. How to quickly and effectively change tools is a crucial performance characteristic of the tool chuck.

[0003] Existing tool chucks come in various structural forms, typically including three-jaw chucks, Morse taper chucks, and hydraulic chucks. They require a wrench to tighten or loosen for tool installation and removal. A common problem is that tool changes are time-consuming and the replacement process is cumbersome. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a chuck for quickly installing and changing tool holders, thus solving the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a chuck for quick installation and conversion of a tool holder, comprising a chuck, a sleeve, and a tool. The tool has a shank at its upper part, and the chuck has a slot at its bottom for inserting the shank. The chuck has several through holes arranged circumferentially, each through hole having a circular cross-section and vertically flattened sides. Each through hole contains a fixed ball, the diameter of which is smaller than the diameter of the through hole but larger than the height of the inlet and outlet on both sides of the through hole. The tool holder has several fixing holes arranged circumferentially, each corresponding to one of the through holes. The sleeve slides vertically around the chuck, and the inner wall of the sleeve has a pressing boss that can press the fixing ball from the through holes to the fixing holes.

[0008] Preferably, the outer ring of the clamp is provided with an upper support platform, the inner ring of the sleeve is provided with a lower support platform, and a spring is provided between the upper support platform and the lower support platform.

[0009] Preferably, the outer ring of the chuck is provided with external threads below the through hole, the inner ring of the sleeve is provided with internal threads below the extrusion boss, the external threads and the internal threads are matched, and the external threads and the internal threads are matched when the extrusion boss and the through hole are matched.

[0010] Preferably, the chuck is further provided with a reset mechanism for assisting the tool shank to pop out.

[0011] Preferably, the reset mechanism comprises a top rod, a top block and a spring two, the chuck is provided with a containing cavity at the top end of the slot, the containing cavity is provided with a supporting ring, the top rod is vertically slidably matched at the center of the supporting ring, the top block is arranged at the bottom end of the top rod and corresponds to the tool shank, and the spring two is sleeved outside the top rod and located between the top block and the supporting ring.

[0012] Preferably, the tool shank is provided with a limiting table at the joint with the tool, and the limiting table has an outer diameter greater than the outer diameter of the slot.

[0013] Preferably, the tool shank and the slot are both hexagonal in cross section.

[0014] (Three) beneficial effects

[0015] The utility model provides a kind of chuck of quick installation conversion tool shank. It has the following beneficial effects:

[0016] 1, the chuck of quick installation conversion tool shank, the installation and disassembly of this tool, only need to slide sleeve up and down, the radial position of fixed ball is changed by sliding sleeve up and down, so that it is locked on the fixed hole on tool shank or is separated from fixed hole, to complete the switching of tool disassembly and installation quickly, compared with the mode of traditional auxiliary disassembly using wrench, installation conversion speed is greatly improved. At the same time, the mode of fixed ball limiting fixed hole is used, and the tool firmness is greatly improved compared with clamping type. DETAILED DESCRIPTION

[0017] Figure 1 It is exploded axonometric view of the utility model;

[0018] Figure 2 It is assembly half cutaway schematic view of the utility model;

[0019] Figure 3 It is assembly state plane schematic view of the utility model.

[0020] In the drawing: 1 chuck, 2 sleeve, 3 tool, 4 tool shank, 5 limiting table, 6 fixed hole, 7 slot, 8 through hole, 9 fixed ball, 10 extrusion boss, 11 upper supporting table, 12 lower supporting table, 13 spring one, 14 external threads, 15 internal threads, 16 containing cavity, 17 supporting ring, 18 top rod, 19 top block, 20 spring two. DETAILED DESCRIPTION

[0021] The utility model embodiment provides a kind of chuck of quick installation conversion tool rod, as shown in figure Figures 1-3 It includes chuck 1, sleeve 2, tool 3, the upper portion of tool 3 is provided with handle 4, the bottom of chuck 1 is provided with the insertion slot 7 for handle 4 insertion, and the section of handle 4 and insertion slot 7 are all hexagonal structure.

[0022] The junction of handle 4 and tool 3 is provided with limit platform 5, and the outer diameter of limit platform 5 is greater than the outer diameter of insertion slot 7.When the top end of handle 4 contacts the top end of insertion slot 7, limit platform 5 is just supported at the bottom edge of chuck 1.

[0023] Chuck 1 is provided with a plurality of through holes 8 in ring direction, and the number of through hole 8 is six in the embodiment, corresponding to the six sides of hexagonal insertion slot 7 respectively.The section of through hole 8 is circular, and the two lower surfaces are circular arc, and the two sides are vertical flat, and each through hole 8 is provided with a fixed ball 9, the diameter of fixed ball 9 is less than the diameter of the two lower surfaces of through hole 8, and greater than the height of the two side inlets and outlets, and the diameter of fixed ball 9 is greater than the width of through hole 8, and the diameter is between 1.2 and 1.5 times of the width of through hole 8, so that part of fixed ball 9 can extend out of the two side inlets and outlets of through hole 8, but fixed ball 9 will not leak out of the inlets and outlets.Handle 4 is provided with a plurality of fixed holes 6 corresponding to through hole 8 in ring direction, and the number of fixed hole 6 is six, and is arranged on the six sides of handle 4 respectively.

[0024] Sleeve 2 is vertically slidably fitted outside chuck 1, and the inner wall of sleeve 2 is provided with extrusion boss 10 for extruding fixed ball 9 from through hole 8 to fixed hole 6.Specifically, the upper half of chuck 1 is greater than the lower half in diameter, the upper half of sleeve 2 is vertically slidably fitted on the upper half of chuck 1, and extrusion boss 10 is arranged on the lower half of sleeve 2.

[0025] As shown in figure Figure 2 The outer ring of chuck 1 is provided with upper support platform 11, and the upper support platform 11 is located at the junction of the upper half and the lower half of chuck 1, and the inner ring of sleeve 2 is provided with lower support platform 12, and the lower support platform 12 is the top surface of extrusion boss 10.The upper support platform 11 and the lower support platform 12 are provided with spring 1 13, and when spring 1 13 is not under external force, sleeve 2 can be pushed down to the position corresponding to extrusion boss 10.

[0026] As shown in figure Figure 2As shown, in order to avoid the jacket 2 under the action of vibration or external force upward reset. The outer ring on the chuck 1 below the through hole 8 is provided with external thread 14, the inner ring on the jacket 2 below the extrusion boss 10 is provided with internal thread 15, the external thread 14 and the internal thread 15 inside and outside the adaptation, when the extrusion boss 10 and the through hole 8 inside and outside corresponding, the external thread 14 and the internal thread 15 inside and outside synchronous corresponding. When the jacket 2 is slid down to the extrusion boss 10 corresponding to the through hole 8, the jacket 2 can be rotated, so that the internal thread 15 on the jacket 2 and the internal thread 15 on the chuck 1 are connected together. Avoid the jacket 2 upward reset.

[0027] The chuck 1 is also provided with reset mechanism for assisting the tool shank 4 to pop out.

[0028] As Figure 2 The reset mechanism includes the top rod 18, the top block 19, the spring two 20, the chuck 1 is located in the top end of the slot 7 upwardly extending and opening the cavity 16, the cavity 16 is provided with the support ring 17, the top rod 18 is vertically slidingly fitted at the center of the support ring 17, the top block 19 is arranged at the bottom end of the top rod 18, and corresponds to the tool shank 4, the spring two 20 is sleeved on the outside of the top rod 18, and is located between the top block 19 and the support ring 17. When the jacket 2 resets upward to the extrusion boss 10 disengages the through hole 8, the top block 19 will pop out the tool shank 4 from the slot 7, which is used to assist the tool 3 to disengage from the chuck 1.

[0029] Working principle: step one, slide the jacket 2 upward to the extrusion boss 10 disengages the through hole 8. Step two, the tool shank 4 of the tool 3 is inserted into the slot 7, so that the fixed hole 6 corresponds to the through hole 8. Step three, slide the jacket 2 downward to the extrusion boss 10 corresponds to the through hole 8, the extrusion boss 10 will partially extrude the fixed ball 9 into the fixed hole 6. Step four, continue to rotate the jacket 2 downward, so that the internal thread 15 of the jacket 2 and the external thread 15 of the chuck 1 are connected, and the installation of the tool 3 is completed.

[0030] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A collet for quick installation of a conversion tool bar, characterized in that: The utility model provides a cutting tool, including chuck (1), sleeve (2), tool (3), the upper portion of tool (3) is provided with tool shank (4), the bottom of chuck (1) is provided with the slot (7) of tool shank (4) insertion, a plurality of through -hole (8) is opened to chuck (1) on annular, the cross section of through -hole (8) is circular, and both sides are vertical flat, and each through -hole (8) is provided with a fixed ball (9) in, the diameter of fixed ball (9) is less than the diameter of through -hole (8), and greater than the height of both sides import and export, a plurality of fixed hole (6) is opened to tool shank (4) on annular with through -hole (8) one to one correspondence, sleeve (2) is vertically slidably adapted outside chuck (1), and the inner wall of sleeve (2) is provided with extrusion boss (10) for extruding fixed ball (9) from through -hole (8) to fixed hole (6).

2. A chuck for quick change tool holder bars according to claim 1, characterised in that: The outer ring of chuck (1) is provided with upper support table (11), the inner ring of sleeve (2) is provided with lower support table (12), and spring one (13) is arranged between upper support table (11) and lower support table (12).

3. A chuck for quick change tool holder bars according to claim 1, characterized in that: The outer ring of chuck (1) is provided with external thread (14) below through -hole (8), the inner ring of sleeve (2) is provided with internal thread (15) below extrusion boss (10), and external thread (14) and internal thread (15) are adapted inside and outside, when extrusion boss (10) and through -hole (8) are corresponding inside and outside, external thread (14) and internal thread (15) are synchronous corresponding inside and outside.

4. The quick change tool holder of claim 1, wherein: The chuck (1) is further provided with a reset mechanism for assisting the ejection of the tool shank (4).

5. A chuck for quick change tool holder bars according to claim 4, characterised in that: The reset mechanism includes a top rod (18), a top block (19), and a spring (20). The chuck (1) has a cavity (16) extending upward at the top end of the slot (7). The cavity (16) is provided with a support ring (17). The top rod (18) is vertically slidably fitted at the center of the support ring (17). The top block (19) is arranged at the bottom end of the top rod (18) and corresponds to the tool shank (4). The spring (20) is sleeved outside the top rod (18) and located between the top block (19) and the support ring (17).

6. A chuck for quick change tool holder bars according to claim 1, characterized in that: The junction of the tool shank (4) and the tool (3) is provided with a limiting table (5), and the outer diameter of the limiting table (5) is greater than the outer diameter of the slot (7).

7. A chuck for quick change tool holder bars according to claim 1, characterized in that: The cross section of the tool shank (4) and the slot (7) is a hexagonal structure.

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