CNC machining limited tool

Abstract

The present invention discloses a tool accessory for CNC machining, comprising: a cutting tool, a fixed block is provided at the lower end thereof; a limiting device, detachably connected to the side wall of the cutting tool; the limiting device is arranged around the fixed block of the cutting tool, and the fixed block at the lower end of the cutting tool protrudes out of the limiting device; an adjusting device, installed in cooperation with the limiting device; the adjusting device can adjust the length of the fixed block at the lower end of the cutting tool protruding out of the limiting device by adjusting the axial length of the limiting device along the cutting tool. The present application detachably connects the limiting device to the side wall of the cutting tool, realizing the function of axial limiting; and an adjusting device is provided to adjust the length of the fixed block at the lower end of the cutting tool protruding out of the limiting device, which can ensure a reasonable cutting depth and ensure the stability of the milling tool.

Description

Technical Field

[0001] The invention relates to the field of mechanical technology, and in particular to a CNC machining limiting tool, in particular to a CNC machining limiting tool for an automobile aluminum alloy battery frame. Background Art

[0002] At present, aluminum alloy is widely used in the battery shell of new energy vehicles. The density of aluminum alloy battery shell is low, and the assembly of aluminum alloy extrusion and individual pieces will cause distortion, deformation, and axial processing. Therefore, it is currently used in large quantities and has become the mainstream.

[0003] As lightweighting of new energy vehicles has become a general trend, traditional raw material suppliers have reached cooperation with battery suppliers to explore more cost-effective and popular battery pack lightweighting solutions.

[0004] Aluminum alloy battery frame shell is the preferred material to replace steel. Its advantages are light weight, high structural strength, good heat dissipation performance and good corrosion resistance. The power battery pack structure includes cast aluminum structure and profile welding structure. The disadvantages of cast aluminum structure are large wall thickness, large machining amount and insignificant weight reduction. Profile welding structure has the advantages of light weight, small machining amount, good profile adaptability and high strength, but its disadvantages are poor profile weldability, weakened welding strength and large welding deformation. However, with the rise of advanced welding technology, the emergence of friction welding, ultrasonic welding and other technologies have solved the problem of aluminum alloy welding, and aluminum alloy power battery packs are becoming more and more widely used. The present invention has a reasonable structural setting and strong functionality, which ensures that the axial dimensions of the step hole processed due to the distortion and deformation of the profile are consistent, has low operating costs, and improves processing efficiency.

[0005] When the existing milling tool is connected to the tool holder body, the nut and the collet are first installed in combination, and then the two are installed in combination with the tool holder body. Then the milling tool is matched with the collet, the nut is turned and tightened, and then the nut is turned with a tool to further tighten the nut. No axial limiting mechanism is provided, and the stability of the installation of the milling tool cannot be guaranteed. It is also inconvenient to ensure the consistency of the processing of the step hole when the profile is twisted and deformed.

[0006] Therefore, it is necessary to provide an axially limited CNC tool to solve the above technical problems. Summary of the invention

[0007] The present application provides an axially limited CNC tool, which is used to solve the technical problem that the existing milling tool is not provided with an axial limiting mechanism and cannot ensure the stability of the installation of the milling tool.

[0008] In one embodiment of the present application, an axially limited CNC tool is provided, comprising:

[0009] A cutting tool having a fixing block at its lower end;

[0010] a limiting device detachably connected to the side wall of the cutting tool; the limiting device is disposed around the fixing block of the cutting tool, and the fixing block at the lower end of the cutting tool protrudes out of the limiting device; and

[0011] An adjusting device is installed in cooperation with the limiting device; the adjusting device can adjust the length of the fixing block at the lower end of the cutting tool protruding outside the limiting device by adjusting the length of the limiting device along the axial direction of the cutting tool.

[0012] Furthermore, the limiting device comprises:

[0013] A fixing ring is arranged around the cutting tool; a plurality of threaded through holes are arranged in the circumference of the fixing ring;

[0014] A plurality of positioning screws are threadedly connected to the threaded through holes of the fixing ring, and the positioning screws abut against the side walls of the cutting tool;

[0015] a connecting cover mounted on the fixing ring; and

[0016] A connecting seat is arranged below the fixing ring and is threadedly connected to the connecting cover; the connecting seat is transitionally matched with the side wall of the cutting tool; and the fixing block at the lower end of the cutting tool protrudes out of the connecting seat.

[0017] Furthermore, a fixing plane is provided at the middle position of the side wall of the cutting tool, and the positioning screw abuts against the fixing plane; a connecting step is provided at the side wall of the cutting tool adjacent to the fixing block, and the connecting seat is transitionally matched with the connecting step.

[0018] Furthermore, the connecting seat is provided with an annular seat body and a plurality of axial limit strips arranged in a ring shape; the outer diameter of the annular seat body is smaller than the inner diameter of the connecting cover, and the annular seat body is threadedly connected to the connecting cover; the axial limit strips are connected to the lower surface of the annular seat body, and each axial limit strip is provided with a connecting portion and a limiting portion, the connecting portion is integrally arranged with the annular seat body, and the thickness of the limiting portion is smaller than the thickness of the connecting portion.

[0019] Furthermore, there are four positioning screws, four fixing planes, and four axial limiting strips.

[0020] Furthermore, the limiting device also includes: a bearing, which is arranged in the annular seat body; the connecting step has the same width as the fixed block and is larger than the width of the remaining positions of the cutting tool, the upper surface of the connecting step can be kept flush with the upper surface of the annular seat body, and the bearing is located on the connecting step.

[0021] Furthermore, the adjusting device includes: multiple groups of adjusting screws, which are threadedly connected to the connecting cover, and the extending direction of the adjusting screws is parallel to the axial direction of the cutting tool; one side of each adjusting screw abuts against the head end face of the positioning screw, the other side of each adjusting screw abuts against the inner wall surface of the connecting cover, and the bottom surface of the rod body of each adjusting screw abuts against the top surface of the annular seat body; after adjusting the connection position of the connecting seat and the connecting cover, the relative position of the connecting seat and the connecting cover can be locked by the adjusting screw.

[0022] Furthermore, the number of the adjusting screws is four.

[0023] Furthermore, a milling cutter is cooperatively installed inside the fixing block.

[0024] Furthermore, the axially limited CNC tool also includes:

[0025] The spring knife handle body has an upper mounting hole at its top and a lower mounting hole at its bottom;

[0026] A shank rivet is mounted on the upper mounting hole of the spring shank body;

[0027] A collet is installed in the lower mounting hole of the spring tool handle body; the upper end of the cutting tool is fixed in the collet.

[0028] Compared with the related art, the milling cutter with axial limit provided by the present invention has the following beneficial effects:

[0029] The present application detachably connects the limiting device to the side wall of the cutting tool to realize the function of axial limiting; and an adjusting device is provided, which can adjust the length of the fixing block at the lower end of the cutting tool protruding from the limiting device by adjusting the axial length of the limiting device along the cutting tool, thereby ensuring a reasonable cutting depth and ensuring the stability of the milling tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of a numerical control machining limiting tool of the present invention;

[0031] Figure 2 A cross-sectional view of a numerical control machining limiting tool of the present invention;

[0032] Figure 3 It is a partial structural schematic diagram of a numerical control machining limiting tool of the present invention;

[0033] Figure 4 It is a partial structural cross-sectional view of a numerical control machining limiting tool of the present invention;

[0034] Figure 5It is a schematic diagram of a numerical control machining limit tool of the present invention in product machining;

[0035] Figure 6 It is a structural schematic diagram of the product in the present invention.

[0036] Among them: 1 is a handle rivet, 2 is a spring handle body, 3 is a collet, 4 is a cutting tool, 5 is an adjusting screw, 6 is a connecting cover, 7 is a connecting seat, 8 is a fixing ring, 9 is a positioning screw, 10 is a bearing, 11 is a product, 21 is an upper mounting hole, 22 is a lower mounting hole, 41 is a fixing block, 42 ​​is a fixing plane, 43 is a connecting step, 71 is an annular seat body, 72 is an axial limiting strip, 721 is a connecting part, and 722 is a limiting part. DETAILED DESCRIPTION

[0037] The present invention will be further described below in conjunction with the accompanying drawings.

[0038] See also Figures 1 to 4 An embodiment of the present invention provides a CNC tool with axial limit, comprising a spring shank body 2, a shank pull nail 1, a collet chuck 3, a cutting tool 4, a limit device and an adjustment device.

[0039] Specifically, an upper mounting hole 21 is provided at the top of the spring shank body 2, and a lower mounting hole 22 is provided at the bottom end thereof; the shank pull nail 1 is installed on the upper mounting hole 21 of the spring shank body 2; the collet 3 is installed in the lower mounting hole 22 of the spring shank body 2; the upper end of the cutting tool 4 is fixed in the collet 3.

[0040] The lower end of the cutting tool 4 is provided with a fixing block 41, and a milling cutter is mounted in the fixing block 41. It is understandable that the milling cutter is used as a cutting blade, and the fixing block 41 can be clamped with milling cutters of different specifications, which is convenient for disassembly and replacement of the milling cutter.

[0041] The limiting device is detachably connected to the side wall of the cutting tool 4; the limiting device is arranged around the fixing block 41 of the cutting tool 4, and the fixing block 41 at the lower end of the cutting tool 4 protrudes out of the limiting device.

[0042] The adjusting device is installed in cooperation with the limiting device; the adjusting device can adjust the length of the fixing block 41 at the lower end of the cutting tool 4 protruding outside the limiting device by adjusting the length of the limiting device along the axial direction of the cutting tool 4.

[0043] Furthermore, the limiting device includes a positioning screw 9 , a connecting cover 6 , a connecting seat 7 and a fixing ring 8 .

[0044] Specifically, the fixing ring 8 is arranged around the cutting tool 4; the fixing ring 8 is provided with a plurality of threaded through holes in the circumference thereof; a plurality of positioning screws 9 are threadedly connected to the threaded through holes of the fixing ring 8, and the positioning screws 9 are in contact with the side wall of the cutting tool 4; the connecting cover 6 is mounted on the fixing ring 8; the connecting seat 7 is arranged below the fixing ring 8 and is threadedly connected to the connecting cover 6; the connecting seat 7 is transitionally matched with the side wall of the cutting tool 4; the fixing block 41 at the lower end of the cutting tool 4 protrudes out of the connecting seat 7. It is understandable that the milling cutter fixed by the fixing block 41 also protrudes out of the connecting seat 7.

[0045] A contact surface is mounted on the surface of the connection seat 7 , and a connecting shaft (not shown) is rotatably mounted on the contact surface of the connection seat 7 .

[0046] Furthermore, a fixing plane 42 is provided in the middle of the side wall of the cutting tool 4, and the positioning screw 9 abuts against the fixing plane 42; a connecting step 43 is provided on the side wall of the cutting tool 4 adjacent to the fixing block 41, and the connecting seat 7 is transitionally matched with the connecting step 43.

[0047] Furthermore, the connecting seat 7 is provided with an annular seat body 71 and a plurality of axial limit strips 72 arranged in a ring shape; the outer diameter of the annular seat body 71 is smaller than the inner diameter of the connecting cover 6, and the annular seat body 71 is threadedly connected to the connecting cover 6; the axial limit strips 72 are connected to the lower surface of the annular seat body 71, and each axial limit strip 72 is provided with a connecting portion 721 and a limit portion 722, the connecting portion 721 is integrally arranged with the annular seat body 71, and the thickness of the limit portion 722 is smaller than the thickness of the connecting portion 721, so that stress can be elastically buffered.

[0048] Furthermore, there are four positioning screws 9, four fixing planes 42, and four axial limit strips 72. The plurality of fixing planes 42 can adjust the fixing position of the positioning screw 9 and adjust the installation and limiting of limit devices of different angles or sizes. The fixing planes 42 can prevent the positioning screw 9 from slipping when tightening the fixing ring 8.

[0049] Furthermore, the limiting device also includes: a bearing 10, which is arranged in the annular seat body 71; the connecting step 43 has the same width as the fixing block 41 and is larger than the width of the remaining positions of the cutting tool 4, the upper surface of the connecting step 43 can be kept flush with the upper surface of the annular seat body 71, and the bearing 10 is located on the connecting step 43.

[0050] Furthermore, the adjusting device includes: multiple groups of adjusting screws 5, which are threadedly connected to the connecting cover 6, and the extending direction of the adjusting screws 5 is parallel to the axial direction of the cutting tool 4; one side of each adjusting screw 5 abuts against the head end face of the positioning screw 9, the other side of each adjusting screw 5 abuts against the inner wall surface of the connecting cover 6, and the bottom surface of the rod body of each adjusting screw 5 abuts against the top surface of the annular seat body 71; after adjusting the connection position of the connecting seat 7 and the connecting cover 6, the relative position of the connecting seat 7 and the connecting cover 6 can be locked by the adjusting screw 5.

[0051] Furthermore, there are four adjusting screws 5. Four positioning screws 9 are sleeved on the surface of the cutting tool 4, a bearing 10 is symmetrically fixedly connected to the inner center of the connecting seat 7, and positioning screws 9 are installed on the upper surfaces of the connecting covers 6, which can limit the position of the fixing ring 8 after adjustment and ensure the stability of the fixing ring 8 after adjustment.

[0052] The initial state of the spring shank is a compressed state, and the elastic force of the spring shank is used to make the connection seat 7 and the connection cover 6 stable in installation. The fixing ring 8 can be installed and limited to ensure the stability of the fixing ring 8 after adjustment. The inner surface of the bearing 10 is inserted into the cutting tool 4. Then, the fixing ring 8 contacts the surface of the connection cover 6, and the cutting tool 4 is rotated, and then contacts the surface of the fixing ring 8, and continues to rotate until the whole is driven to rotate along the central axis and the cooperation with the limiting device is completed. At this time, the movable block is closest to the arc groove below it, which can ensure the stable installation of the limiting device and the cutting tool 4. When disassembling, the adjusting screw 5 is turned to make the fixing ring 8 rotate and adjust the height, driving the connection seat 7, the connection cover 6 and the bearing 10 to fit tightly until there is no gap when rotating at the same time. The adjusting screw 5 is turned to fix the ring 8, the connection seat 7, the connection cover 6 and the bearing 10 to facilitate the installation and disassembly of the milling tool.

[0053] See also Figure 5 The initial state of the spring shank body 2 is a compressed state, and the elastic force of the spring shank body 2 is utilized to ensure that the limiting device and the product 11 are processed stably.

[0054] See also Figures 1 to 3 The telescopic spring handle body 2 is symmetrical and concentric along the center, and can rotate without shaking, further ensuring the stability of rotation and product 11 processing.

[0055] See also Figure 6 , is a schematic diagram of product 11 processed by CNC machining limit tools.

[0056] Since vibration during processing causes loosening, it is easy to cause the device to loosen. Therefore, compared with screw clamping, this patent is more suitable for the processing of multi-step holes.

[0057] Compared with the related art, the milling cutter with axial limit provided by the present invention has the following beneficial effects:

[0058] The present application detachably connects the limiting device to the side wall of the cutting tool to realize the function of axial limiting; and an adjusting device is provided, which can adjust the length of the fixing block at the lower end of the cutting tool protruding from the limiting device by adjusting the axial length of the limiting device along the cutting tool, thereby ensuring a reasonable cutting depth and ensuring the stability of the milling tool.

[0059] The present invention has a reasonable structural setting and strong functionality. It ensures that the axial dimensions of the step hole processed due to the distortion of the profile are consistent, has low operating costs, and improves processing efficiency. The cutting tool is tightened and fixed by bearings and accessories, and the accessories can rotate inside without affecting the normal operation of the tool head, avoiding the cutting tool from falling off and breaking. It has high safety, improves work efficiency, and is suitable for promotion.

[0060] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An axially limited CNC tool, characterized in that: include: A cutting tool having a fixing block at its lower end; a limiting device detachably connected to the side wall of the cutting tool; the limiting device is disposed around the fixing block of the cutting tool, and the fixing block at the lower end of the cutting tool protrudes out of the limiting device; and An adjusting device, installed in cooperation with the limiting device; the adjusting device can adjust the length of the fixing block at the lower end of the cutting tool protruding outside the limiting device by adjusting the length of the limiting device along the axial direction of the cutting tool; Wherein, the limiting device comprises: A fixing ring is arranged around the cutting tool; a plurality of threaded through holes are arranged in the circumference of the fixing ring; A plurality of positioning screws are threadedly connected to the threaded through holes of the fixing ring, and the positioning screws abut against the side walls of the cutting tool; a connecting cover mounted on the fixing ring; and A connecting seat is arranged below the fixing ring and is threadedly connected to the connecting cover; the connecting seat is transitionally matched with the side wall of the cutting tool; the fixing block at the lower end of the cutting tool protrudes out of the connecting seat; Wherein, a fixing plane is provided at the middle position of the side wall of the cutting tool, and the positioning screw abuts against the fixing plane; a connecting step is provided at the side wall of the cutting tool adjacent to the fixing block, and the connecting seat is transitionally matched with the connecting step; the connecting seat is provided with an annular seat body and a plurality of axial limiting strips arranged in an annular shape; the outer diameter of the annular seat body is smaller than the inner diameter of the connecting cover, and the annular seat body is threadedly connected to the connecting cover; the axial limiting strip is connected to the lower surface of the annular seat body, and each axial limiting strip is provided with a connecting portion and a limiting portion, the connecting portion is integrally arranged with the annular seat body, and the thickness of the limiting portion is smaller than the thickness of the connecting portion; Wherein, the limiting device further comprises: a bearing, which is arranged in the annular seat body; the width of the connecting step is the same as that of the fixing block and is larger than the width of the remaining positions of the cutting tool, the upper surface of the connecting step can be kept flush with the upper surface of the annular seat body, and the bearing is located on the connecting step; A milling cutter is cooperatively installed inside the fixed block; Wherein, the adjusting device comprises: A plurality of adjusting screws are threadedly connected to the connecting cover, and the extending direction of the adjusting screws is parallel to the axial direction of the cutting tool; one side of each adjusting screw abuts against the head end face of the positioning screw, the other side of each adjusting screw abuts against the inner wall surface of the connecting cover, and the bottom surface of the rod body of each adjusting screw abuts against the top surface of the annular seat body; after adjusting the connecting position of the connecting seat and the connecting cover, the relative position of the connecting seat and the connecting cover can be locked by the adjusting screw.

2. The axially limited CNC tool according to claim 1 is characterized in that: There are four positioning screws, four fixing planes, and four axial limiting strips.

3. The axially limited CNC tool according to claim 1, characterized in that: The adjusting screws are provided with four.

4. The axially limited CNC tool according to claim 1, characterized in that: Also includes: The spring knife handle body has an upper mounting hole at its top and a lower mounting hole at its bottom; A shank rivet is mounted on the upper mounting hole of the spring shank body; A collet is installed in the lower mounting hole of the spring tool handle body; the upper end of the cutting tool is fixed in the collet.

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