Tool magazine and numerical control machine tool

Abstract

The embodiment of the utility model provides a tool magazine and a numerical control machine tool, the tool magazine comprises a tool magazine body and multiple tool sleeves, the multiple tool sleeves are distributed on the outer edge of the tool magazine body in the circumferential direction, each tool sleeve comprises a tool sleeve body and a tool sleeve seat, and sliding structures are arranged on the two sides of each tool sleeve body correspondingly; the knife pouch seat is provided with two guide structures extending in the length direction of the knife pouch seat, and the guide structures are matched with the sliding structures so that the knife pouch body can move relative to the guide structures; a locking structure is arranged on the inner side face, matched with the knife pouch body, of the guide structure, the locking structure comprises a guide compression piece, and the guide compression piece and the knife pouch body are arranged in a matched mode so as to provide clamping acting force for limiting the knife pouch body from sliding out of the guide structure. By the adoption of the tool magazine, the tool pouch pushing mechanism can be conveniently arranged, and the risk that the tool pouch automatically slides off in the non-pushing state can be reduced.

Description

Technical Field

[0001] This application relates to the field of machine tool technology, and in particular to a tool magazine and a CNC machine tool. Background Technology

[0002] CNC machine tool tool magazines are generally classified into chain-type tool magazines, disc-type tool magazines, and hood-type tool magazines. Regardless of the type of tool magazine, the tools in the magazine need to be mounted on the tool magazine body via tool holders, tool claws, or tool supports.

[0003] Currently, some tool holders are designed to detach from the tool magazine body. For example, in the technical solution provided in Chinese patent document CN221517012U, a sliding groove is provided in the middle of the left and right sides of the tool holder. The two sliding grooves cooperate with two guide structures formed by the forward extension of the tool holder seat, allowing the tool holder to move relative to the tool magazine body. A magazine is also provided below the sliding grooves of the tool holder, which can lock the tool holder to a certain extent.

[0004] However, due to the magazine configuration in the aforementioned technical solution, whether the operator manually pushes or uses a pushing mechanism to move the tool holder relative to the tool magazine body, the selectable area is greatly limited because interference from the guiding structure and the magazine must be avoided. Furthermore, the magazine used to lock the tool holder is located in the lower part of the slide, while the pushing operation area is arranged in the upper part of the slide, which increases the risk of lateral tilting of the tool holder during the pushing process. Utility Model Content

[0005] The embodiments of this application aim to at least solve one of the problems of the prior art. The embodiments of this application provide a tool magazine and CNC machine tool, which facilitates the arrangement of the tool holder pushing mechanism and reduces the risk of the tool holder automatically slipping off when not being pushed.

[0006] The relevant technical solutions of the embodiments of this application include the following:

[0007] A first aspect of this application provides a tool magazine. The tool magazine includes a tool magazine body and tool sleeves, with a plurality of tool sleeves distributed circumferentially along the outer edge of the tool magazine body. Each tool sleeve includes:

[0008] A blade sheath body, wherein sliding structures are respectively provided on both sides of the blade sheath body; and

[0009] A tool holder base having two guide structures extending along its length, the guide structures being adapted to the sliding structure, and the tool holder body being movable relative to the guide structures;

[0010] A locking structure is provided on the inner surface of the guide structure that mates with the blade holder body. The locking structure includes a guide compression member, which is matched with the blade holder body to provide a clamping force that restricts the blade holder body from sliding out of the guide structure.

[0011] Optionally, the protruding end of the guide structure has an L-shaped cross-section and has a first guide surface and a second guide surface, wherein the first guide surface is arranged facing the sliding structure; and the second guide surface mates with the outer wall surface of the blade sleeve body.

[0012] Optionally, the locking structure is provided on the first guide surface and / or the second guide surface.

[0013] Optionally, the guide structure has a channel inside, and both ends of the guide compression member are located in the channel. The guide compression member protrudes from the inner side of the guide structure with a smooth curved surface and faces the blade sheath body. The guide compression member, starting from the protruding end of the guide structure, gradually transitions from being flush with the surface of the guide structure to protruding from the surface of the guide structure along the opposite direction of the extension direction of the guide structure, and then gradually transitions back to being flush with the surface of the guide structure. The guide compression member has a tendency to remain protruding from the surface of the guide structure.

[0014] Optionally, the locking structure further includes an elastic element, and the interior of the guide structure has a chamber communicating with the channel. The elastic element is at least partially located within the chamber, and the elastic element acts on the guide compression member to give the guide compression member a tendency to remain protruding from the surface of the guide structure.

[0015] Optionally, the locking structure further includes a guide post, and the elastic element is sleeved on the guide post; the elastic element includes a cylindrical helical spring, a variable diameter helical spring, or a disc spring, and the elastic element is a compression spring.

[0016] Optionally, the guide compression member includes a spring sheet that protrudes from the inner side of the guide structure in the shape of a smooth curved surface. The spring sheet, starting from the protruding end of the guide structure, gradually transitions from being flush with the surface of the guide structure to protruding from the surface of the guide structure along the opposite direction of the extension direction of the guide structure, and then gradually transitions back to being flush with the surface of the guide structure. The spring sheet has a tendency to remain protruding from the surface of the guide structure.

[0017] Optionally, the guide structure includes a first guide portion, a second guide portion, and a third guide portion distributed sequentially along its own extension direction, wherein the extension directions of the inner guide surfaces of the two second guide portions converge inwards towards each other, and the extension directions of the inner guide surfaces of the two third guide portions open outwards towards each other.

[0018] Optionally, the third guide portion has a plurality of locking structures, which are evenly distributed between the guide structure and the blade sleeve body.

[0019] A second aspect of this application provides a CNC machine tool. The CNC machine tool includes the tool magazine described in any of the foregoing embodiments.

[0020] The tool magazine in this embodiment has at least the following technical effects: the locking structure is also located between the guide structure and the tool holder body, and the locking structure includes a guide compression member that provides a clamping force to limit the tool holder body from sliding out of the guide structure. The locking structure is still located on the guide structure, without occupying additional installation space on the tool holder seat and the tool holder body, allowing for greater freedom in the spatial arrangement of the tool holder pushing mechanism. This helps prevent the tool holder body from sliding off the tool holder seat in a non-pushing state, and also helps avoid the risk of tilting caused by the locking structure and the tool holder pushing mechanism being located at the upper and lower parts of the tool holder body, respectively.

[0021] It is easy to understand that the CNC machine tool technical solution in the embodiments of this application has at least the corresponding technical effects of the tool magazine technical solution, which will not be elaborated here.

[0022] Additional aspects and advantages of embodiments of this application will be set forth in part in the description which follows. Some will thus be obvious from the description, or may be learned by practice of the application. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the tool magazine structure in some embodiments of this application;

[0024] Figure 2 This is a schematic diagram of the blade sheath structure in some embodiments of this application;

[0025] Figure 3 This is a schematic diagram of the structure of the tool holder in some embodiments of this application;

[0026] Figure 4 This is a schematic diagram of the structure of the tool holder in some embodiments of this application;

[0027] Figure 5 This is a schematic diagram of the locking structure in some embodiments of this application, wherein the locking structure includes an elastic element, and the elastic element is respectively a cylindrical helical spring (e.g. Figure 5 As shown in (a)), variable diameter helical springs (such as...) Figure 5 (as shown in (b)) or disc springs (such as Figure 5 (as shown in (c));

[0028] Figure 6 This is a schematic diagram of the locking structure in some embodiments of this application, wherein the guide compression member in the locking structure includes a spring.

[0029] In the picture:

[0030] 10-Cutter head; 11-Dish body; 12-Support structure; 13-Cutter head holder;

[0031] 20-Tool holder; 210-Tool holder body; 220-Tool holder seat; 221-Guide structure; 2211-First guide part; 2212-Second guide part; 2213-Third guide part; 2214-First guide surface; 2215-Second guide surface; 2216-Channel; 222-Locking structure; 2221-Elastic element; 2222-Guide compression element; 2223-Guide post;

[0032] 30-Mounting base; 31-Base plate; 32-Connecting plate; 33-Reducer. Detailed Implementation

[0033] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments of this application or the prior art will be briefly introduced below.

[0034] Obviously, the accompanying drawings described below are merely some embodiments of this application. Those skilled in the art can obtain drawings of other embodiments based on the technical solutions illustrated in these drawings without any inventive effort.

[0035] It should be understood that "multiple" as used herein refers to two or more. In the description of this application, unless otherwise stated, " / " means "or", for example, "A / B" means A or B; "and / or" in this document is merely a description of the relationship between related objects, and it can represent three relationships, for example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, B exists alone, etc.

[0036] Furthermore, in order to clearly describe the technical solutions of the embodiments of this application, the terms "first" or "second" are used in the embodiments of this application to distinguish identical or similar items with substantially the same function and effect. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, and the terms "first" and "second" are not necessarily different.

[0037] The terms "installation," "connection," "arrangement," and "setting" mentioned in the embodiments of this application include direct installation / connection / setting as well as indirect installation / connection / setting; detachable installation / connection / setting as well as non-detachable installation / connection / setting; fixed installation / connection / setting as well as movable installation / connection / setting.

[0038] This application uses a disc-type tool magazine as an example to introduce the technical solutions of the embodiments of this application. However, it should be understood that the application of some technical solutions of the embodiments of this application is not limited to disc-type tool magazines.

[0039] A first aspect of this application provides a tool magazine. See also... Figure 1 The tool magazine includes a tool magazine body 10 and tool sleeves 20, with multiple tool sleeves 20 distributed circumferentially on the outer edge of the tool magazine body 10.

[0040] like Figure 2 as well as Figure 3 As shown, the tool holder 20 includes a tool holder body 210 and a tool holder seat 220. The tool holder body 210 has sliding structures on both sides. The tool holder seat 220 has two guide structures 221 extending along its length direction. The guide structures 221 are adapted to the sliding structures to allow the tool holder body 210 to move relative to the guide structures 221. Figure 1 See, the length direction of the tool holder 220 is away from the center of the tool magazine body 10.

[0041] Please see Figure 2 as well as Figure 4 A locking structure 222 is provided on the inner side of the guide structure 221 that mates with the tool holder body 210. The locking structure 222 includes a guide compression member 2222. The guide compression member 2222 is matched with the tool holder body 210 to provide a clamping force that restricts the tool holder body 210 from sliding out of the guide structure 221.

[0042] In the technical solution of this application embodiment, the locking structure 222 is still set on the guide structure 221, without occupying additional installation space on the tool holder seat 220 and the tool holder body 210. When the tool magazine is used in conjunction with the tool holder pushing mechanism, it provides more freedom in the spatial arrangement of the tool holder pushing mechanism (for example, the tool holder pushing mechanism can be arranged above or below the guide structure 221). In addition, the greater the height difference between the locking structure 222 and the tool holder pushing mechanism, the greater the torque applied by the tool holder pushing mechanism to the tool holder body 210, thus making it easier for the tool holder body 210 to tip over. The arrangement of the locking structure 222 in this application embodiment makes the locking structure 222 and the tool holder pushing mechanism relatively close to each other in height, thus helping to prevent the tool holder body 210 from automatically sliding off the tool holder seat 220 in a non-pushing state, and also helping to avoid the risk of tilting caused by the locking structure 222 and the tool holder pushing mechanism being located at the upper and lower parts of the tool holder body 210 respectively.

[0043] Optionally, in some embodiments of this application, such as Figure 2 as well as Figure 4 As shown, the extended end of the guide structure 221 has an L-shaped cross-section and a first guide surface 2214 and a second guide surface 2215. The first guide surface 2214 faces the sliding structure, and the second guide surface 2215 mates with the outer wall surface of the tool holder body 210. The first guide surface 2214 and the second guide surface 2215 are approximately parallel, with the first guide surface 2214 facing the sliding structure of the tool holder body 210, while the second guide surface 2215 faces other areas of the outer wall of the tool holder body 210. Therefore, the first guide surface 2214 is closer to the inner side of the tool holder seat 220 than the second guide surface 2215.

[0044] Optionally, in some embodiments of this application, such as Figure 4 As shown, a locking structure 222 is provided on the first guide surface 2214 and / or the second guide surface 2215. Depending on actual needs, the locking structure 222 can be provided on one of the first guide surface 2214 and the second guide surface 2215 or both of them.

[0045] Optionally, in some embodiments of this application, such as Figure 3 As shown, the guide structure 221 includes a first guide portion 2211, a second guide portion 2212, and a third guide portion 2213 distributed sequentially along its own extension direction. The inner guide surfaces of the two second guide portions 2212 converge inwards, which helps to clamp the tool holder body 210 and to some extent restricts the tool holder body 210 from sliding off the tool holder seat 220. The inner guide surfaces of the two third guide portions 2213 extend outwards, which facilitates the installation of the tool holder body 210.

[0046] Alternatively, in some other embodiments of this application, such as Figure 4 As shown, the third guide section 2213 has multiple locking structures 222, which are evenly distributed between the guide structure 221 and the tool holder body 210. Multiple locking structures 222 can be provided when the clamping force provided by a single locking structure 222 is insufficient. It is also necessary to provide multiple locking structures 222 when the clamping force in areas outside the location of a single locking structure 222 may be insufficient.

[0047] Optionally, in some embodiments of this application, such as Figure 5 As shown, the guide structure 221 has a channel 2216 inside. The two ends of the guide compression member 2222 are located in the channel 2216. The guide compression member 2222 protrudes from the inner side of the guide structure 221 with a smooth curved surface and faces the blade sleeve body 210. Starting from the protruding end of the guide structure 221, the guide compression member 2222 gradually transitions from being flush with the surface of the guide structure 221 to protruding from the surface of the guide structure 221 along the opposite direction of the extension direction of the guide structure 221, and then gradually transitions back to being flush with the surface of the guide structure 221. The guide compression member 2222 has a tendency to remain protruding from the surface of the guide structure 221.

[0048] In the initial stage of assembling the tool holder body 210 with the guide structure 221, the protruding shape of the guide compression member 2222 provides a relatively obvious guiding effect.

[0049] Furthermore, in some embodiments of this application, the locking structure 222 further includes a guide post 2223, and the elastic element 2221 is sleeved on the guide post 2223.

[0050] Preferably, the locking structure 222 further includes an elastic element 2221, and the guide structure 221 has a cavity with a communicating channel 2216 inside. The elastic element 2221 is at least partially located in the cavity, and the elastic element 2221 acts on the guide compression member 2222 to make the guide compression member 2222 tend to remain protruding from the surface of the guide structure 221. Furthermore, in some embodiments of this application, the elastic element 2221 includes a cylindrical helical spring, a variable diameter helical spring, or a disc spring, and the elastic element 2221 is a compression spring.

[0051] Specifically, such as Figure 5As shown in (a), the guide compression member 2222 protrudes from the inner side of the guide structure 221, and the guide compression member 2222 can be designed in the shape of a button cap. The chamber can be a blind hole, that is, the guide compression member 2222 at least covers a portion of the opening of the chamber. The guide structure 221 has an opening on the side facing the guide compression member 2222 (i.e., the side where the guide compression member 2222 is located), through which the guide compression member 2222 passes, and the opening is just large enough for the guide compression member 2222 to protrude outward. The middle part of the guide compression member 2222 is a protrusion, and the two ends of the guide compression member 2222 are located within the channel 2216. When the guide compression member 2222 is pressed, the two ends of the guide compression member 2222 can deform or displace within the channel 2216 to accommodate the pressing of the protrusion. An elastic element 2221 (specifically a cylindrical helical spring) abuts against the guide compression member 2222 and the wall of the chamber at the end away from the guide compression member 2222. Guide post 2223 is also installed on the wall of the chamber at the end away from guide compression member 2222, and elastic element 2221 is sleeved on guide post 2223. During the installation of the tool holder body 210 to the tool holder seat 220, the tool holder body 210 is located within the inner space defined by the two guide structures 221. The tool holder body 210 presses against the guide compression members 2222 on both sides, compressing them, and thus... Figure 5 In (a), the cylindrical helical spring is compressed. The cylindrical helical spring can provide a greater elastic force, giving it a tendency to return to its natural state, and thus its elastic force becomes the force used to clamp the blade sheath body 210. As a result, the blade sheath body 210 is clamped by the locking structures 222 on both sides.

[0052] like Figure 5 As shown in (b), the elastic element 2221 can also be a variable-diameter helical spring. A variable-diameter helical spring is a non-linear spring, meaning its stiffness is not constant during compression. For non-linear springs, it is more appropriate to mount it on the guide post 2223. Accordingly, the guide post 2223 can also be designed with a variable diameter. The blade holder body 210 presses against the guide compression members 2222 on both sides. Figure 5 In (b), the variable diameter helical spring is compressed, and its elastic force becomes the force used to clamp the blade holder body 210. Understandably, the variable diameter helical spring includes a concave helical spring, a concave helical spring (with large coils at both ends and a small coil in the middle), or a convex helical spring (with small coils at both ends and a large coil in the middle).

[0053] like Figure 5 As shown in (c), the elastic element 2221 can also be another type of nonlinear spring—a disc spring. Multiple disc springs can be stacked, and the central region of each disc spring has a through hole, allowing it to be fitted onto the guide post 2223. Similarly, the elastic force of the disc spring becomes the force used to clamp the blade holder body 210.

[0054] Optionally, in some embodiments of this application, such as Figure 6 As shown, the guide compression member 2222 includes a spring piece that protrudes from the inner surface of the guide structure 221 in a smooth curved shape. Starting from the protruding end of the guide structure 221, the spring piece gradually transitions from being flush with the surface of the guide structure 221 to protruding from the surface of the guide structure 221 along the opposite direction of the guide structure 221's extension direction, and then gradually transitions back to being flush with the surface of the guide structure 221. The spring piece tends to remain protruding from the surface of the guide structure 221. Using a spring piece as the guide compression member 2222 provides both guiding compression and elastic reset functions. If the elastic reset performance is sufficient, the locking structure 222 may not require an elastic element or guide post. In the initial stage of engaging the tool holder body 210 with the guide structure 221, the protruding shape of the spring piece provides a relatively obvious guiding effect.

[0055] Optionally, in some embodiments of this application, such as Figure 3 As shown, the guide structure 221 includes a first guide portion 2211, a second guide portion 2212, and a third guide portion 2213 distributed sequentially along its own extension direction, wherein the extension directions of the two second guide portions 2212 converge inwards towards each other. The inward convergence of the extension directions of the two second guide portions 2212 enables the two guide structures 221 to have better guiding and clamping functions.

[0056] Optionally, in some embodiments of this application, such as Figure 1 As shown, the tool magazine is a disc-type tool magazine. The tool magazine body 10 includes a disc body 11, a support structure 12, and a tool disc holder 13. The disc body 11 and the tool disc holder 13 are connected by the support structure 12. The support structure 12 includes multiple support ribs 121. The support ribs 121 extend vertically upward from the outer edge of the tool disc holder 13 and then continue to extend upward to the outer edge of the disc body 11 in an inclined upward and outward diverging manner. The support ribs 121 extend vertically upward and then extend inclined upward and outward, rather than directly extending inclined upward and outward, which saves the area occupied by the entire tool magazine body within the vertically upward extension height range. Furthermore, in some embodiments of this application, such as... Figure 1 As shown, the support rib 121 is also provided with weight reduction holes.

[0057] Optionally, in some embodiments of this application, such as Figure 1 As shown, reinforcing ribs 122 are provided on both sides of the supporting rib 121, and the reinforcing ribs 122 connect the disk body 11 and the supporting structure 12. Specifically, the reinforcing ribs 122 are located below the outer edge of the disk body 11 or below the area near the outer edge. The reinforcing ribs 122 enhance the support strength of the supporting structure 12 for the disk body 11, making the installation of the entire disk body 11 more reliable.

[0058] Optionally, in some embodiments of this application, such as Figure 1 As shown, the tool magazine also includes a mounting base 30, with a connecting plate 32 and a base plate 31 respectively provided on the top and bottom of the mounting base 30, and a clearance space between the connecting plate 32 and the base plate 31. This clearance space accommodates a reducer 33 for driving the tool magazine body 10 to rotate, thereby further making the structure of the entire disc-type tool magazine more compact.

[0059] A second aspect of this application provides a CNC machine tool. The CNC machine tool includes the tool magazine described in any of the preceding embodiments. The tool magazine can be placed flat on the machine tool body, with multiple tool holders 20 distributed circumferentially along the outer edge of the tool magazine body 10, each tool holder 20 capable of storing one tool.

[0060] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A tool magazine comprising a tool magazine body and a plurality of tool pockets circumferentially distributed along an outer edge of the tool magazine body, characterized in that The knife cover comprises: a knife cover body, two sides of the knife cover body each having a sliding structure; and a knife cover seat, the knife cover seat having two guide structures extending along the length direction of the knife cover seat, the guide structures being matched with the sliding structures, and the knife cover body being movable relative to the guide structures; wherein a locking structure is arranged on the inner side surface of the guide structure matched with the knife cover body, the locking structure comprising a guide compression member, the guide compression member being arranged in matching with the knife cover body to provide a clamping force limiting the knife cover body from sliding out of the guide structure.

2. The knife magazine according to claim 1, characterized in that The extending end of the guide structure has an L-shaped cross section and has a first guide surface and a second guide surface, wherein the first guide surface is arranged towards the sliding structure; and the second guide surface is matched with the outer wall surface of the knife cover body.

3. The knife magazine according to claim 2, characterized in that The first guide surface and / or the second guide surface is provided with the locking structure.

4. The knife magazine of claim 1, wherein, The guide structure has a channel inside, both ends of the guide compression member being located in the channel, the guide compression member being protruded from the inner side surface of the guide structure in a smooth curved surface shape and facing the knife cover body, wherein the guide compression member gradually transitions from being flush with the surface of the guide structure to being protruded from the surface of the guide structure, and then gradually transitions to being again flush with the surface of the guide structure, starting from the extending end of the guide structure and along the reverse direction of the extending direction of the guide structure, the guide compression member having a tendency to remain protruded from the surface of the guide structure.

5. The knife magazine of claim 4, wherein, The locking structure further comprises an elastic element, the inside of the guide structure further has a chamber communicating with the channel, the elastic element being at least partially located in the chamber, the elastic element acting on the guide compression member to make the guide compression member have the tendency to remain protruded from the surface of the guide structure.

6. The knife magazine of claim 5, wherein, The locking structure further comprises a guide column, the elastic element being sleeved on the guide column; the elastic element comprises a cylindrical spiral spring, a variable-diameter spiral spring or a disc spring, and the elastic element is a compression spring.

7. The knife magazine of claim 3, wherein, The guide compression member comprises a spring sheet, the spring sheet being protruded from the inner side surface of the guide structure in a smooth curved surface shape, wherein the spring sheet gradually transitions from being flush with the surface of the guide structure to being protruded from the surface of the guide structure, and then gradually transitions to being again flush with the surface of the guide structure, starting from the extending end of the guide structure and along the reverse direction of the extending direction of the guide structure, the spring sheet having a tendency to remain protruded from the surface of the guide structure.

8. The knife magazine according to any one of claims 1 to 7, characterized in that The guide structure comprises a first guide part, a second guide part and a third guide part sequentially distributed along the extending direction of the guide structure, wherein the extending directions of the inner side guide surfaces of two second guide parts are inwardly converging to each other, and the extending directions of the inner side guide surfaces of two third guide parts are outwardly diverging to each other.

9. The knife magazine of claim 8, wherein, The third guide part has a plurality of the locking structures, the plurality of the locking structures being uniformly distributed between the guide structure and the knife cover body.

10. A numerically controlled machine tool, characterized by The knife library comprises the knife cover as claimed in any one of claims 1 to 9.

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