Modular cutting tool

Abstract

The utility model provides a kind of combined cutter, including: cutter body, different shapes are provided on the cutter body Multiple cutter mounting parts, the multiple cutter mounting parts include first cutter mounting part, first through slot, second through slot are opened at the first cutter mounting part, and the first through slot is communicated with the second through slot;Knife body is installed in the second through slot and is oppositely placed in the cutter body;Adjusting mechanism is installed in the first through slot, and the adjusting mechanism is connected with the knife body to drive the knife body in the extension action of the cutter body. Different cutters are integrated in the cutter system of the utility model, avoid frequent replacement of cutter, effectively avoid the precision deviation and cutter wear problem caused by frequent replacement of cutter.

Description

Technical Field

[0001] This invention relates to the field of cutting tools, and more particularly to a combination cutting tool. Background Technology

[0002] In the field of machining, parts with stepped holes and annular grooves are widely used in industries such as automobiles and construction machinery. Currently, machining these parts typically requires multiple specialized cutting tools. Especially when the parts are long or large, they can only be machined on CNC milling machines using boring and milling processes, necessitating multiple tool changes and reducing machining efficiency. Furthermore, these tools are often of fixed-diameter structure, meaning the cutting edge size, such as the inner hole diameter, is fixed during manufacturing and cannot be adjusted according to machining requirements. Fixed-diameter tools are only suitable for machining inner holes or annular grooves of specific sizes. When the design dimensions of the part are slightly adjusted, or when machining the same type of part with different specifications is required, a specialized tool of the corresponding size must be used. Utility Model Content

[0003] To address the shortcomings of the existing technology, this invention provides a combined cutting tool, comprising:

[0004] The tool body has multiple tool mounting portions of different shapes. The multiple tool mounting portions include a first tool mounting portion. The first tool mounting portion has a first through groove and a second through groove, and the first through groove and the second through groove are connected.

[0005] The small blade body is installed in the second through slot and is positioned opposite to the blade body;

[0006] An adjustment mechanism is installed in the first through slot, and the adjustment mechanism is connected to the small knife body to drive the small knife body to extend and retract within the knife body.

[0007] In some embodiments, the blade body includes a first blade body and a second blade body, both of which have T-shaped cross-sections. One side of both the first and second blade bodies is provided with an inclined surface, which fits against the inclined surface of the inner wall of the second through groove, and the plane opposite to the inclined surface fits against the plane of the inner wall of the second through groove.

[0008] In some embodiments, a threaded hole is provided on the side of the second through groove on the tool body, and a third through groove is provided on both the first small blade and the second small blade; a flat top screw passes through the threaded hole and is pressed against the second small blade through the third through groove of the first small blade to fix the first small blade and the second small blade to the tool body.

[0009] In some embodiments, the adjustment mechanism includes a double-ended lead screw, a first slider, and a second slider;

[0010] The double-ended lead screw has threads at both ends, and the threads at both ends are in opposite directions. The first slider and the second slider are respectively provided with threaded through holes. The threaded through hole of the first slider is threadedly engaged with one end of the double-ended lead screw, and the threaded through hole of the second slider is threadedly engaged with the other end of the double-ended lead screw.

[0011] In some embodiments, the first slider and the second slider respectively engage with the first through groove, and the first slider and the second slider can move left and right along the inside of the first through groove.

[0012] In some embodiments, both the first slider and the second slider have protrusions below them, and the blade body has corresponding grooves, with the protrusions embedded in the grooves.

[0013] In some embodiments, the double-ended lead screw is fitted with a locking nut, which is fixedly connected to the double-ended lead screw by a set screw. Springs are also fitted on both sides of the double-ended lead screw near the locking nut. The cutter body is provided with a fourth through groove, and the locking nut cooperates with the fourth through groove to rotate and move.

[0014] In some embodiments, a scale is fixedly installed at one end of the double-ended lead screw, and an internal hexagonal groove is provided at the other end of the double-ended lead screw.

[0015] In some embodiments, the plurality of tool mounting portions further include a second tool mounting portion and a third tool mounting portion, wherein the second tool mounting portion is a through-hole structure with a fixed diameter, and the third tool mounting portion is an annular groove structure.

[0016] In some embodiments, the combined cutting tool further comprises:

[0017] A tool holder is installed at the tail of the tool body. A coolant inlet is provided at the center of the end of the tool holder. Flow channels are provided inside the tool body and the tool holder. The outlets of the flow channels lead to the plurality of tool mounting parts, respectively.

[0018] Compared with the prior art, the advantages and beneficial effects of this new technology are as follows:

[0019] This novel combined cutting tool features multiple tool mounting portions of different shapes on its main body, integrating different tools into a single tool system. This avoids frequent tool changes, shortens tool change time during machining, and effectively prevents accuracy deviations and tool wear problems caused by frequent tool changes. The multiple tool mounting portions include a first tool mounting portion with a first through slot and a second through slot, which are connected. A small tool body is mounted in the second through slot and positioned opposite the main body. An adjustment mechanism is mounted in the first through slot and connected to the small tool body to drive its extension and retraction within the main body. This allows for adjustment of the inner diameter within a certain range, achieving precise adjustment of machining dimensions. After adjustment, the tool body is reliably locked without vibration.

[0020] In addition, the combined cutting tool has built-in coolant pipelines, and the coolant outlets are respectively connected to the multiple tool mounting parts, which makes it convenient to spray coolant directly onto the machining position, which helps to extend the tool life and improve machining accuracy. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic diagram of the overall structure of the combined cutting tool provided in one embodiment of the present invention is shown;

[0023] Figure 2 It shows Figure 1 A cross-sectional view of the combined cutting tool shown;

[0024] Figure 3 It shows Figure 1 Another cross-sectional view of the combined cutting tool shown;

[0025] Figure 4 A schematic diagram of the tool body structure is shown;

[0026] Figure 5 It shows Figure 4 Right view of the tool body structure;

[0027] Figure 6 It shows Figure 4 Top view of the tool body structure;

[0028] Figure 7 A schematic diagram of the knife body is shown;

[0029] Figure 8 A schematic diagram of the liquid cooling pipeline installed inside the combined cutting tool is shown.

[0030] The accompanying figure is labeled as follows:

[0031] 1-Tool body;

[0032] 11-Tool mounting section;

[0033] 111 - First tool mounting section;

[0034] 112 - Second tool mounting section;

[0035] 113 - Third tool mounting section;

[0036] 111A - First through slot;

[0037] 111B - Second through slot;

[0038] 111C - Threaded hole;

[0039] 111D - Fourth through slot;

[0040] 12-Handle;

[0041] 2-Small knife body;

[0042] 21-First small knife body;

[0043] 21A-slope;

[0044] 21B-plane;

[0045] 21C - Cut surface;

[0046] 22-Third through slot;

[0047] 23-groove;

[0048] 3- Adjustment mechanism;

[0049] 31-Double-ended lead screw;

[0050] 32A - First slider;

[0051] 32B - Second slider;

[0052] 32' - Protrusion;

[0053] 33 - Lock nut;

[0054] 34-Top screw;

[0055] 35-Spring;

[0056] 36- Dial;

[0057] 37-Screw;

[0058] 41 - Coolant inlet;

[0059] 42-Flow channel;

[0060] 43 - Coolant outlet;

[0061] 5-Handle sleeve;

[0062] 61-Flat top wire;

[0063] 62-Factor;

[0064] 63 - Locking screw;

[0065] 64 - Threaded hole. Detailed Implementation

[0066] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments to further understand the purpose, solution and effect of the present invention, but this is not intended to limit the scope of protection of the appended claims.

[0067] Certain terms are used in this specification and the following claims to refer to specific components or parts. Those skilled in the art will understand that users or manufacturers may use different names or terms to refer to the same component or part. This specification and the following claims do not distinguish components or parts by differences in name, but rather by differences in function. The terms "comprising" and "including" used throughout this specification and the following claims are open-ended and should be interpreted as "including but not limited to". Furthermore, the term "connection" here includes any direct and indirect electrical connection means. Indirect electrical connection means include connections made through other means.

[0068] It should be noted that in the description of this invention, the terms "lateral", "longitudinal", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", as well as "about", "approximately", "substantially", "left and right", etc., indicating the orientation or positional relationship or parameters, are all based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, a specific size, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0069] See Figures 1-6 As shown, one embodiment of this invention provides a combined cutting tool. Figure 1 A schematic diagram of the overall structure of the combined cutting tool provided in one embodiment of the present invention is shown; Figure 2 It shows Figure 1 A cross-sectional view of the combined cutting tool shown; Figure 3 It shows Figure 1 Another cross-sectional view of the combined cutting tool shown;

[0070] Figure 4 A schematic diagram of the tool body structure is shown; Figure 5 It shows Figure 4 Right view of the tool body structure; Figure 6 It shows Figure 4 Top view of the tool body structure.

[0071] This combined cutting tool includes at least: a cutting tool body 1, a small cutting tool body 2, and an adjustment mechanism 3. The cutting tool body 1 has multiple cutting tool mounting portions 11 of different shapes. These multiple mounting portions include a first cutting tool mounting portion 111, which has a first through groove 111A and a second through groove 111B. The first through groove 111A and the second through groove 111B communicate to form a T-shaped through-hole structure. In one embodiment, the first through groove 111A and the second through groove 111B do not completely penetrate or only partially penetrate two opposite sides of the cutting tool body. The small cutting tool body 2 is mounted in the second through groove 111B and is positioned opposite each other within the inner cavity of the cutting tool body 1. The adjustment mechanism 3 is mounted in the first through groove 111A and is connected to the small cutting tool body 2 to drive the small cutting tool body 2 to extend or retract within the cutting tool body 1, thereby indirectly causing the small cutting tool body 2 to retract or extend within the cutting tool body 1, thus achieving the purpose of adjusting the machining dimensions.

[0072] In one embodiment, reference Figure 1 , Figure 4 As shown, Figure 4A schematic diagram of the tool body structure is shown. The tool body 1 is provided with multiple tool mounting parts 11 of different shapes. These multiple tool mounting parts 11 of different shapes include a first tool mounting part 111, a second tool mounting part 112, and a third tool mounting part 113. The first tool mounting part 111 is a T-shaped through-hole structure, the second tool mounting part 112 is a through-hole structure with multiple fixed diameter holes, and the third tool mounting part 113 is a ring groove structure. In this embodiment, multiple tool mounting parts of different shapes are integrated to make cutting structures for machining three features on the same tool: the third tool mounting part 113 for machining ring grooves, the second tool mounting part 112 for machining smaller diameter inner holes, and the first tool mounting part 111 for machining larger diameter inner holes. Among them, the second tool mounting part 112 and the third tool mounting part 113 are fixed mounting positions for mounting inserts of fixed size. The third tool mounting part 113 is fixedly mounted with multiple inserts, and a ring groove of appropriate width is machined by one or more cuts. The second tool mounting part 112 is fixedly mounted with multiple inserts, and the diameter of the inner hole is not adjustable. The first tool mounting part 111 is equipped with an adjustment mechanism 3 and a small tool body 2. The adjustment mechanism indirectly drives the movement of the small tool body 2, which can precisely adjust the position of the small tool tip. Therefore, the size of the inner hole diameter can be adjusted within a certain range, and the inner hole size can be precisely controlled to meet the design tolerance requirements.

[0073] In one embodiment, reference Figure 2 ,refer to Figure 7 As shown, Figure 7 A schematic diagram of the small blade body is shown. The small blade body 2 includes a first small blade body 21 and a second small blade body (not shown in the figure). The first and second small blade bodies can be stacked side by side at a certain interval and installed opposite each other in the second through groove 111B. For each small blade body, the cross-section of the small blade body 2 is T-shaped, and one side is provided with a bevel 21A. The bevel 21A is in contact with the inner wall bevel of the second through groove 111B, and the opposite plane 21B of the bevel is in contact with the inner wall plane of the second through groove 111B, forming a stepped cutting surface 21C at the blade tip. In this embodiment, since the bevel of the small blade body 21 is in contact with the bevel of the upper second through groove 111B of the tool body 1, its position is completely fixed and there is no fitting gap. This design can ensure that the installed small blade body will not vibrate due to fitting gap during the processing.

[0074] Further integration Figure 3 , Figure 7As shown, in one embodiment, at least one threaded hole 111C is provided on the side of the second through groove 111B on the tool body 1. For the two small cutter bodies, at least one third through groove 22 is provided on both the first and second small cutter bodies; the flat-set screw 61 passes through the threaded hole 111C and is pressed against the second small cutter body through the third through groove 22 of the first small cutter body 21 to fix the first and second small cutter bodies to the tool body 1. Finally, the tail of the flat-set screw 61 is locked into the fixing member 62 of the tool body.

[0075] In one embodiment, further reference is made to Figure 1 , Figure 2 As shown, the adjustment mechanism 3 includes a double-ended lead screw 31, a first slider 32A, and a second slider 32B. The first slider 32A and the second slider 32B are respectively attached to the side of the first through groove 111A, and engage with the first through groove 111A. The first slider 32A and the second slider 32B can move left and right along the interior of the first through groove 111A, but cannot rotate. The double-ended lead screw 31 has threads at both ends, with opposite thread directions (left-handed and right-handed). The first slider 32A and the second slider 32B each have threaded through holes. The threaded through hole of the first slider 32A engages with one end of the double-ended lead screw 31, and the threaded through hole of the second slider 32B engages with the other end of the double-ended lead screw 31.

[0076] Further reference Figure 2 As shown, both the first slider 32A and the second slider 32B have protrusions 32' below them, and the small cutter body 2 has corresponding grooves 23. The protrusions 32' are embedded in the grooves 23. When the double-ended lead screw 31 is rotated, it will drive the first slider 32A and the second slider 32B to move towards or away from each other, indirectly causing the small cutter body 2 to retract or extend in the cutter body 1, thereby achieving the purpose of adjusting the machining dimensions.

[0077] Further reference Figure 2 As shown, a locking nut 33 is fitted in the middle of the double-ended lead screw 31. The locking nut 33 is fixedly connected to the double-ended lead screw 31 via a set screw 34, and the locking nut is secured by the set screw, making the locking nut and the double-ended lead screw a whole. Springs 35 are also fitted on both sides of the double-ended lead screw 31 near the locking nut 33. Figure 5 As shown, the tool body 1 is provided with a fourth through groove 111D, which is located on the same side of the tool body 1 as the threaded hole 111C. The locking nut 33 cooperates with the fourth through groove 111D, and the locking nut can rotate but cannot move axially.

[0078] Further reference Figure 1, Figure 2 As shown, in one embodiment, a scale 36 is connected to one end of a double-ended lead screw 31. The scale 36 is fixed to one end of the double-ended lead screw 31 with a screw 37. The other end has an internal hexagonal groove, into which an internal hexagonal wrench of the appropriate size can be inserted to rotate the double-ended lead screw 31. When the double-ended lead screw 31 is rotated, it drives the two first sliders 32A and the second slider 32B to move towards or away from each other. By calculation, it can be known that the rotation angle corresponds to the distance that the first sliders 32A and the second sliders 32B move. This distance will be marked on the scale 36 to distinguish the magnitude of the adjustment displacement. Furthermore, by adjusting the rotation angle of the lead screw, the horizontal displacement of the sliders is converted into the extension and retraction of the small cutter body by the opposite or opposite movement of the first sliders 32A and the second sliders 32B. This indirectly drives the small cutter body to retract or extend within the cutter body. The extension and retraction directly changes the cutting radius, thereby achieving the purpose of adjusting the machining dimensions.

[0079] refer to Figure 8 As shown, Figure 8 A schematic diagram of a liquid cooling pipeline installed inside a combined cutting tool according to an embodiment is shown. In this embodiment, a tool holder 12 is also provided at the tail end of the tool body 1. A coolant inlet 41 is provided at the center of the end of the tool holder 12. A flow channel 42 is provided inside the tool body 1 and the tool holder 12. The coolant outlet 43 of the flow channel 42 leads to the plurality of tool mounting parts 11 respectively. In this embodiment, by incorporating a liquid cooling pipeline inside the combined cutting tool, precise cooling of the cutting inserts mounted on the plurality of tool mounting parts 11 can be achieved during the machining process. The coolant acts directly on the cutting inserts, providing a sufficient supply of coolant, quickly removing cutting heat, improving insert lubrication, extending insert life, helping to remove iron filings faster, avoiding tool vibration and tool damage, and effectively improving machining quality and cutting efficiency.

[0080] Furthermore, in one embodiment, reference Figure 1 , Figure 2 As shown, a shank sleeve 5 is also fitted on the handle 12 of the combination tool. The end face of the shank sleeve 5 fits against the end face of the handle 12 and is fixed to the handle 12 with a locking screw 63.

[0081] In one embodiment, reference Figure 1 , Figure 2 As shown, the first tool mounting part 111, the second tool mounting part 112, and the third tool mounting part 113 are also provided with a plurality of threaded holes 64 for fixing the mounted blades.

[0082] In the actual application of this combined tool, firstly, the corresponding cutting inserts are installed into the first tool mounting part 111, the second tool mounting part 112, and the third tool mounting part 113, and fixed with screws. A shank sleeve 5 is fitted onto the tool holder 12, with the end face of the sleeve 5 fitting against the end face of the tool holder, and fixed to the tool holder 12 with a locking screw 63. Then, the tool machining dimensions are adjusted using a trial cut method. Loosen the flat set screw 61, rotate the double-ended lead screw 31 clockwise, and the small tool body 2 retracts inward. Measure the distance between the tips of the two small tool bodies (first and second) with calipers, ensuring it is smaller than the diameter of the hole in the workpiece. Then tighten the flat set screw 61 to fix the small tool body 2. Install the combined tool into the machine tool spindle and start the program to begin machining. Measure the diameter of the larger hole and calculate the remaining machining allowance. Loosen the flat-set screw 61 and adjust the double-ended lead screw 31 counterclockwise. The small cutter body 2 will extend outward. Read the extension amount through the scale 36. Stop rotating when it equals the required machining allowance. Then tighten the flat-set screw 61 to fix the small cutter body 2. Machin the part again and measure the hole diameter. If it meets the requirements, the tool adjustment is complete. If it does not meet the requirements, repeat the above steps until the dimensions meet the requirements. Finally, machine the annular groove using the insert mounted in the third tool mounting part 113, measure the dimensions, and adjust the annular groove dimensions using the machine tool tool compensation function until the requirements are met. Measure the dimensions of the smaller stepped hole. If a large discrepancy is found, check if the insert in the second tool mounting part 113 is damaged. Replace it to achieve the corresponding dimensional requirements. After completing the above operations, batch machining can begin. During machining, the hydraulic control switch can be turned on. The liquid cooling pipes built into the tool body will deliver coolant to the first tool mounting part 111, the second tool mounting part 112, and the third tool mounting part 113, which is beneficial for improving machining accuracy and reducing wear.

[0083] As described above, this novel combined cutting tool features multiple tool mounting portions of different shapes on its main body, integrating different tools into a single tool system. This avoids frequent tool changes, shortens tool change time during machining, and effectively prevents accuracy deviations and tool wear issues caused by frequent tool changes. Each tool mounting portion includes a first tool mounting portion with a first through slot and a second through slot, which communicate with each other. A small tool body is mounted in the second through slot and positioned opposite the main body. An adjustment mechanism is mounted in the first through slot and connected to the small tool body to drive its extension and retraction within the main body, enabling precise adjustment of machining dimensions. After adjustment, the tool is reliably locked without vibration. Furthermore, the combined cutting tool incorporates coolant piping, with coolant outlets leading to the multiple tool mounting portions, facilitating direct spraying of coolant onto the machining position, which helps extend tool life and improve machining accuracy.

[0084] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A combination cutting tool, characterized in that, include: The tool body has multiple tool mounting portions of different shapes. The multiple tool mounting portions include a first tool mounting portion. The first tool mounting portion has a first through groove and a second through groove, and the first through groove and the second through groove are connected. The small blade body is installed in the second through slot and positioned opposite to the blade body; An adjustment mechanism is installed in the first through slot, and the adjustment mechanism is connected to the small knife body to drive the small knife body to extend and retract within the knife body.

2. The combined cutting tool according to claim 1, characterized in that, The small blade body includes a first small blade body and a second small blade body. The cross-section of the first small blade body and the second small blade body is T-shaped. One side of the first small blade body and the second small blade body is provided with an inclined surface. The inclined surface is in contact with the inclined surface of the inner wall of the second through groove, and the plane opposite to the inclined surface is in contact with the plane of the inner wall of the second through groove.

3. The combined cutting tool according to claim 2, characterized in that, The tool body has a threaded hole on the side of the second through groove, and the first and second small blades each have a third through groove; the flat top screw passes through the threaded hole and is pressed against the second small blade through the third through groove of the first small blade to fix the first and second small blades to the tool body.

4. The combined cutting tool according to claim 1, characterized in that, The adjustment mechanism includes a double-ended lead screw, a first slider, and a second slider; The double-ended lead screw has threads at both ends, and the threads at both ends are in opposite directions. The first slider and the second slider are respectively provided with threaded through holes. The threaded through hole of the first slider is threadedly engaged with one end of the double-ended lead screw, and the threaded through hole of the second slider is threadedly engaged with the other end of the double-ended lead screw.

5. The combined cutting tool according to claim 4, characterized in that, The first slider and the second slider respectively engage with the first through groove, and the first slider and the second slider can move left and right along the inside of the first through groove.

6. The combined cutting tool according to claim 4, characterized in that, Both the first and second sliders have protrusions below them, and the small knife body has corresponding grooves, with the protrusions embedded in the grooves.

7. The combined cutting tool according to claim 4, characterized in that, The double-ended lead screw is fitted with a locking nut, which is fixedly connected to the double-ended lead screw by a set screw. Springs are also fitted on both sides of the double-ended lead screw near the locking nut. The cutter body is provided with a fourth through groove, and the locking nut cooperates with the fourth through groove to rotate and move.

8. The combined cutting tool according to claim 4, characterized in that, A scale is fixedly installed at one end of the double-ended lead screw, and an internal hexagonal groove is provided at the other end of the double-ended lead screw.

9. The combined cutting tool according to claim 1, characterized in that, The plurality of tool mounting portions further include a second tool mounting portion and a third tool mounting portion, wherein the second tool mounting portion is a through hole structure with a fixed diameter, and the third tool mounting portion is an annular groove structure.

10. The combined cutting tool according to any one of claims 1-9, characterized in that, Also includes: A tool holder is installed at the tail of the tool body. A coolant inlet is provided at the center of the end of the tool holder. Flow channels are provided inside the tool body and the tool holder. The outlets of the flow channels lead to the plurality of tool mounting parts, respectively.

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