Chuck device and machine tool

Abstract

The utility model provides a chuck device and a machine tool, relates to the technical field of machining, and is used for solving the technical problem that the tapping precision of a stranding die is affected due to the fact that the stranding die is not stably fixed on the machine tool in the prior art. The chuck device is installed on the machine tool and comprises a chuck body and a limiting piece, the chuck body is provided with a containing groove, a cutter inlet is formed in the bottom wall of the side, away from a groove opening of the containing groove, of the chuck body, a limiting hole is formed in the side wall of the chuck body, and the cutter inlet, the limiting hole and the containing groove are communicated. The limiting piece stretches into the limiting hole to abut against the die located in the containing groove so as to limit the die to move in the axial direction of the limiting hole, so that the die is drilled by a cutter of a machine tool stretching into the machine tool along the cutter inlet, the positioning accuracy of the die is high, and the tapping accuracy of the die is high.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a chuck device and a machine tool. Background Art

[0002] Wire stranding is a key process in the production of overhead aluminum wires. Wire stranding includes the twisting step. Twisting is the process of twisting the single wires layer by layer in a spiral along the circumferential direction using a wire stranding device. The quality of twisting will directly determine the stress distribution between the layers of the finished conductor and the single wires in the same layer, and is used to determine whether the strands are loose or over-twisted. The quality of twisting is mainly affected by the processing accuracy of the twisting die. The twisting die is a square die. In actual production, it is necessary to process a prototype hole in the center of the twisting die, and the axis of the prototype hole coincides with the center of the die, which makes processing difficult.

[0003] In the related art, the twisting mold includes a mold body composed of two basic molds. The material of the mold body is bakelite or nylon. Generally, a machine tool is required to drill a hole in the center of the mold body to form an axis hole for the subsequent installation and fixation of the axis. During the drilling process, the position of the twisting mold needs to be accurately fixed to ensure the processing accuracy of the axis hole.

[0004] However, in the related art, the fixing of the twisting die on the machine tool is unstable, which affects the hole opening accuracy of the twisting die. Utility Model Content

[0005] The embodiment of the utility model provides a chuck device and a machine tool. The chuck device is used for fixing a twisting mold on a machine tool, so that the positioning accuracy of the mold is higher and the opening accuracy of the mold is higher.

[0006] In order to achieve the above purpose, the embodiment of the utility model provides the following technical solutions:

[0007] In a first aspect, an embodiment of the utility model provides a chuck device installed on a machine tool, the chuck device comprising a chuck body and a limiting member, the chuck body is provided with a receiving groove, a bottom wall of the chuck body on a side away from the groove of the receiving groove is provided with a cutting edge, a side wall of the chuck body is provided with a limiting hole, and the cutting edge, the limiting hole and the receiving groove are connected;

[0008] The limiting member extends into the limiting hole and abuts against the mold located in the accommodating groove to limit the axial movement of the mold along the limiting hole, so that the mold is drilled by the tool of the machine tool extending along the cutting edge.

[0009] In a possible implementation manner, the two limiting holes are relatively arranged on the side wall of the chuck body, and the number of limiting members is two. The limiting members extend into the limiting holes and relatively abut against two sides of the mold.

[0010] In a possible implementation manner, the four limiting holes are circumferentially spaced apart on the side wall of the chuck body, and the limiting holes are axially arranged opposite to each other in pairs, and the number of limiting members is four, and the limiting members extend into the limiting holes and abut against the mold.

[0011] In a possible implementation manner, the chuck body is a cylinder, and the angle between two adjacent limiting members is ninety degrees.

[0012] In a possible implementation manner, the limiting member includes a threaded adjustment member, the limiting hole is a threaded hole, and the threaded adjustment member is threadedly connected to the threaded hole.

[0013] In a possible implementation manner, the threaded adjustment member includes a bolt and a protective sleeve, and the protective sleeve is sleeved on the outer periphery of the screw head of the bolt.

[0014] In a possible implementation manner, the protective cover is a flexible cover.

[0015] In a possible embodiment, the limiting member includes a limiting rod, and the limiting rod is provided with a plurality of limiting grooves spaced along its own axial direction. The side wall of the chuck body is provided with a limiting block, and the limiting block is configured to be engaged with any of the limiting grooves to change the distance that the limiting rod extends into the accommodating groove along the limiting hole.

[0016] In a possible implementation manner, an elastic member is provided between the limiting block and the side wall of the chuck body, and the elastic force direction of the elastic member points toward the limiting rod along the radial direction of the limiting rod.

[0017] The chuck device provided in this application has at least the following beneficial effects:

[0018] By opening a accommodating groove in the chuck body, the twisting mold to be opened can be accommodated, and the twisting mold can be fixed in the accommodating groove by using the limiting holes opened in the bottom wall of the accommodating groove and the side wall of the chuck body and the limiting members extending therein. The positioning state of the twisting mold can also be regulated by adjusting the distance that the limiting member extends into the limiting hole, thereby achieving accurate and stable positioning of the twisting mold to be opened on the machine tool, which is convenient for subsequent machine tool tools to open holes in the twisting mold.

[0019] In a second aspect, an embodiment of the utility model provides a machine tool, comprising a machine tool body and a chuck device as described in any technical solution of the first aspect and installed on the machine tool body.

[0020] The machine tool provided in the second aspect of the present application includes the chuck device provided in the first aspect and also has all its beneficial effects, so they will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic structural diagram of a chuck device provided in an embodiment of the utility model.

[0023] Description of reference numerals:

[0024] 100-chuck body;

[0025] 110-accommodation groove; 120-entry opening; 130-limiting hole;

[0026] 200-limiting parts;

[0027] 210-Threaded adjustment piece. DETAILED DESCRIPTION

[0028] As described in the background technology, stranding is a key process in the production of overhead aluminum wires. Stranding includes a twisting step. Twisting is to use a stranding device to twist the single wires layer by layer in a spiral along the circumferential direction. The quality of the twisting will directly determine the stress distribution between the layers of the finished conductor and the single wires in the same layer, and is used to determine whether the stranded wire is loose or over-twisted. The twisting quality is mainly affected by the processing accuracy of the twisting mold. The twisting mold is a square mold. In actual production, it is necessary to process a prototype hole in the mold center of the twisting mold, and the axis of the prototype hole coincides with the mold center. The processing difficulty is relatively high. In the related technology, the twisting mold includes a mold body composed of two basic molds. The material of the mold body is bakelite or nylon. Generally, it is necessary to use a machine tool to drill a hole in the center of the mold body to form an axial hole, so as to facilitate the subsequent installation and fixation of the shaft; during the drilling process, the position of the twisting mold needs to be accurately fixed to ensure the processing accuracy of the axial hole. However, in the related technology, the fixation of the twisting mold on the machine tool is unstable, which affects the hole opening accuracy of the twisting mold.

[0029] The inventors have found that the main reason for the above problems is that during the shaft hole processing process of the twisted die, when the machine tool drills the twisted die, the twisted die itself is subjected to double stress impact along the radial and axial directions of the shaft hole, which is easy to produce shaking displacement, and thus easily makes the shaft hole processing accuracy affected negatively. Therefore, the mold position needs to be fixed stably and accurately.

[0030] In view of the above technical problems, an embodiment of the utility model provides a chuck device, which can accommodate the twisting mold to be drilled by opening a accommodating groove in the chuck body, and use the limiting holes opened in the bottom wall of the accommodating groove and the side wall of the chuck body and the limiting members extending therein to limit and fix the twisting mold in the accommodating groove. The positioning state of the twisting mold can also be regulated by adjusting the distance that the limiting member extends into the limiting hole, thereby realizing accurate and stable positioning of the twisting mold to be drilled on the machine tool, which is convenient for subsequent machine tool tools to drill holes in the twisting mold.

[0031] In order to make the above-mentioned purposes, features and advantages of the embodiments of the utility model more obvious and easy to understand, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0032] refer to Figure 1 The chuck device provided by the embodiment of the utility model is installed on a machine tool. The chuck device includes a chuck body 100 and a limiting member 200. The chuck body 100 is provided with a receiving groove 110. The bottom wall of the chuck body 100 away from the groove side of the receiving groove 110 is provided with a cutting edge 120. The side wall of the chuck body 100 is provided with a limiting hole 130. The cutting edge 120, the limiting hole 130 and the receiving groove 110 are connected. The limiting member 200 extends into the limiting hole 130 and abuts against the mold located in the receiving groove 110 to limit the axial movement of the mold along the limiting hole 130, so that the mold is drilled by the tool of the machine tool that extends along the cutting edge 120.

[0033] In this way, by opening a receiving groove 110 in the chuck body 100, the twisting mold to be drilled can be accommodated, and the twisting mold can be limited and fixed in the receiving groove 110 by using the limiting hole 130 opened on the bottom wall of the receiving groove 110 and the side wall of the chuck body 100 and the limiting member 200 extending therein. The positioning state of the twisting mold can also be adjusted by adjusting the distance that the limiting member 200 extends into the limiting hole 130, thereby achieving accurate and stable positioning of the twisting mold to be drilled on the machine tool, which is convenient for the subsequent machine tool tool to drill the hole of the twisting mold.

[0034] Furthermore, the accommodating groove 110 is a square groove, so that the inner wall shape of the square groove is well matched with the contour shape of the twisting mold, which is conducive to limiting and fixing the twisting mold.

[0035] It can be understood that the chuck device can be detachably mounted on a machine tool. For example, the chuck body 100 is threadedly connected to a mounting seat preset on the machine tool, and the connection stability is relatively high.

[0036] Based on the above implementation, it can be improved that two limiting holes 130 are relatively arranged on the side wall of the chuck body 100, two limiting members 200 are arranged, and the limiting members 200 extend into the limiting holes 130 and relatively abut against the two sides of the mold.

[0037] With such arrangement, the stranding die located in the receiving groove 110 of the chuck body 100 can be well limited along the radial direction of the opening and the position of the die can be finely adjusted, with high processing accuracy.

[0038] As a possible implementation mode, four limiting holes 130 are circumferentially spaced apart on the side wall of the chuck body 100, and the limiting holes 130 are axially arranged opposite to each other in pairs, and four limiting members 200 are provided. The limiting members 200 extend into the limiting holes 130 and abut against the mold, thereby further improving the clamping stability of the twisting mold and preventing its unstable movement during drilling.

[0039] In a possible embodiment, the chuck body 100 is a cylinder, and the angle between two adjacent limit members 200 is ninety degrees. The limit members 200 are symmetrically arranged along the circumference of the cylindrical chuck, and the force lines in two mutually perpendicular directions when they abut against the side walls of the mold located in the accommodating groove 110 are more stable.

[0040] In a possible implementation manner, the limiting member 200 includes a threaded adjustment member 210 , the limiting hole 130 is a threaded hole, and the threaded adjustment member 210 is threadedly connected to the threaded hole. Exemplarily, the threaded adjustment member 210 is a bolt.

[0041] On the basis of the above embodiment, it can be improved that the threaded adjustment member 210 includes a bolt and a protective sleeve, and the protective sleeve is arranged on the outer periphery of the bolt head, which not only provides structural protection for the bolt, but also reduces friction and wear at the bolt head.

[0042] As a possible embodiment, the protective cover is a flexible cover. Exemplarily, the material of the flexible protective cover is plastic or resin material. Furthermore, the material of the flexible protective cover is epoxy resin, so as to further reduce the wear of the protective cover and extend its service life.

[0043] In other possible embodiments, the limit member 200 includes a limit rod, which is provided with a plurality of limit grooves at intervals along its own axial direction, and a limit block is provided on the side wall of the chuck body 100, and the limit block is configured to engage with any limit groove to change the distance that the limit rod extends into the receiving groove 110 along the limit hole 130. In this way, this structure enables the limit member 200 to better limit the mold by fine-tuning its own relative distance into the receiving groove 110, and can be applicable to twisted mold blanks of different sizes to be opened, thereby improving the application range of the clamping device.

[0044] In some other embodiments, an elastic member is provided between the limiting block and the side wall of the chuck body 100, and the elastic force direction of the elastic member points to the limiting rod along the radial direction of the limiting rod, further improving the abutment force between the limiting rod and the side wall of the mold.

[0045] In a second aspect, an embodiment of the utility model provides a machine tool, which includes a machine tool body and a chuck device provided in any embodiment of the first aspect and installed on the machine tool body.

[0046] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0047] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0048] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0050] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0051] It should be noted that the embodiments represented by "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing specific features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments that are explicitly or not explicitly described.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A chuck device, characterized in that: Installed on a machine tool, the chuck device comprises a chuck body and a limiting member, the chuck body is provided with a receiving groove, a bottom wall of the chuck body on a side away from the groove of the receiving groove is provided with a cutting edge, a side wall of the chuck body is provided with a limiting hole, and the cutting edge, the limiting hole and the receiving groove are connected; The limiting member extends into the limiting hole and abuts against the mold located in the accommodating groove to limit the axial movement of the mold along the limiting hole, so that the mold is drilled by the tool of the machine tool extending along the cutting edge.

2. The chuck device according to claim 1, characterized in that: The two limiting holes are relatively arranged on the side wall of the chuck body, and the limiting members are arranged in two. The limiting members extend into the limiting holes and relatively abut against two sides of the mold.

3. The chuck device according to claim 1, characterized in that: The four limiting holes are circumferentially spaced apart on the side wall of the chuck body, and the limiting holes are arranged opposite to each other in pairs along the axial direction of the chuck body. The number of limiting members is four, and the limiting members extend into the limiting holes and abut against the mold.

4. The chuck device according to claim 3, characterized in that: The chuck body is a cylinder, and the angle between two adjacent limiting members is ninety degrees.

5. The chuck device according to any one of claims 1 to 4, characterized in that: The limiting member includes a threaded adjustment member, the limiting hole is a threaded hole, and the threaded adjustment member is threadedly connected to the threaded hole.

6. The chuck device according to claim 5, characterized in that: The threaded adjustment member comprises a bolt and a protective sleeve, wherein the protective sleeve is sleeved on the outer periphery of the screw head of the bolt.

7. The chuck device according to claim 6, characterized in that: The protective cover is a flexible cover.

8. The chuck device according to any one of claims 1 to 4, characterized in that: The limiting member includes a limiting rod, and the limiting rod is provided with a plurality of limiting grooves spaced along its own axial direction. The side wall of the chuck body is provided with a limiting block, and the limiting block is configured to be engaged with any of the limiting grooves to change the distance that the limiting rod extends into the accommodating groove along the limiting hole.

9. The chuck device according to claim 8, characterized in that: An elastic member is provided between the limiting block and the side wall of the chuck body, and the elastic force direction of the elastic member points to the limiting rod along the radial direction of the limiting rod.

10. A machine tool, characterized in that: It comprises a machine tool body and a chuck device as described in any one of claims 1 to 9 installed on the machine tool body.

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