CNC machine tools

Abstract

This application belongs to the technical field of roller production equipment, specifically relating to a roller clamp and a CNC machine tool. The clamp includes an adjusting guide rail, a drive assembly, and two mounting members. The two mounting members are laterally movable with the adjusting guide rail. Each mounting member has a clamping member on its inner side along the lateral direction, forming an arc-shaped structure. The drive assembly drives the two mounting members to move closer together laterally, thereby creating a roller clamping space within the arc-shaped structure. This roller clamp is used in the turning process of rollers to avoid vibration and excessive wear of the turning tools. In this application, the roller is clamped by the roller clamping space formed by the arc-shaped structure of the clamping members, thus reducing vibration. Furthermore, by adjusting the mounting members to move closer together using the drive assembly, the arc-shaped structure forms the roller clamping space, achieving effective clamping of the roller. The entire operation of the roller clamp is relatively simple, which is beneficial for improving the efficiency of roller turning.

Description

Technical Field

[0001] This application belongs to the technical field of roller production equipment, specifically relating to a CNC machine tool. Background Technology

[0002] Rollers are widely used components in conveyor equipment such as belt conveyors. During the production of rollers, the roller surface needs to be machined. Turning involves using turning tools to polish the roller surface to make it smooth. Due to the large diameter, long length, and thin wall of the rollers, vibration occurs during turning, leading to problems such as excessive wear of the turning tools and poor roller surface machining quality.

[0003] Existing technologies use a follower post to clamp the roller to reduce vibration. However, this requires constantly adjusting bolts at different positions to ensure the follower post clamps the roller securely, which is cumbersome and reduces processing efficiency. Utility Model Content

[0004] To achieve the above objectives, this application provides a roller clamp, comprising:

[0005] Adjust the guide rail to extend laterally;

[0006] Two mounting pieces are movably engaged with the adjusting guide rail along the lateral direction. Each of the two mounting pieces is provided with a clamping member along the inner side of the lateral direction, and the clamping member forms an arc-shaped structure along the inner side of the lateral direction.

[0007] A drive assembly is used to drive the two mounting pieces to move closer to each other along the lateral direction so as to cause the arc-shaped structure to form a roller clamping space.

[0008] In some embodiments, the arcuate structure includes arcuate surfaces, all of which form the roller clamping space lie on the same circular trajectory, the axis of which extends longitudinally, and the mounting member and the clamping member both extend vertically, with the highest point of the mounting member and the clamping member along the vertical direction being lower than the highest point of the circular trajectory along the vertical direction.

[0009] In some embodiments, the vertical top dimension of the mounting member is smaller than the vertical bottom dimension of the mounting member.

[0010] In some embodiments, the vertical top of the adjusting guide rail is provided with a limiting protrusion, and the vertical bottom of the mounting member is formed with a limiting groove. The limiting groove and the limiting protrusion are in a lateral movable engagement, a longitudinal limiting engagement, and a lateral limiting engagement; and / or,

[0011] The vertical bottom of the adjusting guide rail is provided with a transition piece, which is used to connect with the base of the CNC machine tool.

[0012] In some embodiments, the driving component includes:

[0013] A lead screw extends along the lateral direction and is spaced apart from the adjusting guide rail along the longitudinal direction;

[0014] The nut seat engages with the lead screw thread and is fixedly connected to the mounting component.

[0015] In some embodiments, the lead screw includes two threaded segments arranged symmetrically along the transverse direction, each threaded segment being provided with a nut seat, and the two nut seats being fixedly connected to the two mounting components one-to-one.

[0016] In some embodiments, the lead screw further includes a smooth section connecting the two threaded segments, the smooth section having a limiting groove formed thereon, and the adjustment assembly further includes a limiting block that engages with the limiting groove for limiting.

[0017] In some embodiments, each of the mounting members has one of the clamping members, and two of the clamping members are arranged symmetrically along the transverse direction; and / or,

[0018] The clamping member is detachably connected to the mounting member; and / or

[0019] The clamping component is made of nylon.

[0020] This application also provides a CNC machine tool, comprising:

[0021] Turning tools;

[0022] The roller clamp as described above is arranged at a distance from the turning tool along the longitudinal direction.

[0023] In some embodiments, the CNC machine tool further includes a base, on which a first moving mechanism and a second moving mechanism are provided. The turning tool is connected to the first moving mechanism and the turning tool is connected to the second moving mechanism. The first moving mechanism and the second moving mechanism are respectively used to move the turning tool and the turning tool along the longitudinal direction.

[0024] The roller clamp and CNC machine tool provided in this application have the following beneficial effects through the above technical solutions:

[0025] Before turning the roller, firstly, the clamping parts are installed on the mounting parts. Secondly, the driving assembly is used to separate the mounting parts. Then, the roller is moved between the two clamping parts. Finally, the driving assembly is used to bring the two mounting parts closer together so that the arc-shaped structure on the clamping parts forms a roller clamping space. In this application, the roller fixture consists of two parts arranged laterally at intervals. The roller can be clamped simply by adjusting the proximity of the mounting parts using the driving assembly, thereby simplifying the operation steps of the roller fixture and improving the turning efficiency of the roller.

[0026] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0027] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings:

[0028] Figure 1 This is a schematic diagram of the structure of the roller clamp according to a specific embodiment of this application;

[0029] Figure 2 for Figure 1 An enlarged schematic diagram of part A in the middle;

[0030] Figure 3 This is a structural schematic diagram of a CNC machine tool according to a specific embodiment of this application.

[0031] Explanation of reference numerals in the attached figures

[0032] 1000. CNC machine tool; 100. Roller clamp; 1. Adjusting guide rail; 2. Mounting component; 3. Clamping component; 4. Arc structure; 5. Guide component; 6. Lead screw; 61. Threaded section; 62. Smooth section; 63. Limiting groove; 7. Nut seat; 8. Limiting block; 9. Transition component; 200. Turning tool; 300. Three-jaw chuck; 400. Tailstock center; 500. Base; 600. Roller. Detailed Implementation

[0033] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0034] The terminology of the roller clamp 100 and CNC machine tool 1000 according to this application is described below with reference to the accompanying drawings.

[0035] like Figure 1 As shown, a specific embodiment of this application provides a roller clamp 100, including an adjusting guide rail 1, a drive assembly, and two mounting members 2. The adjusting guide rail 1 extends laterally. The two mounting members 2 are movably engaged with the adjusting guide rail 1 laterally. The inner side of each mounting member 2 is provided with a clamping member 3, and the clamping member 3 forms an arc-shaped structure 4 along its inner side. The drive assembly is used to drive the two mounting members 2 to move closer to each other laterally so as to drive the arc-shaped structure 4 to form a roller clamping space.

[0036] The roller clamp 100 is used in the turning process of the roller 600. Specifically, the turning process requires the use of a turning tool 200 to grind the roller surface. That is, the roller 600 rotates continuously and contacts the cutting edge of the turning tool 200. Due to the large diameter, long length, and thin wall of the roller 600, a vibration phenomenon occurs during turning, that is, the roller 600 vibrates and collides with the turning tool 200. Long-term vibration will lead to greater wear of the turning tool 200, resulting in poor roller surface machining quality. In this application, the roller 600 is clamped by the roller clamping space formed by the arc structure 4 of the clamping member 3 to reduce the vibration phenomenon. The clamping member 3 is installed on the mounting member 2. The drive component adjusts the mounting members 2 to bring them closer together so that the arc structure 4 forms the roller clamping space, thus achieving the clamping of the roller 600. The operation steps of the roller clamp 100 are relatively simple, which is conducive to improving the turning efficiency of the roller 600.

[0037] In some embodiments, the arc-shaped structure 4 includes an arc-shaped surface, and all the arc-shaped surfaces forming the roller clamping space are located on the same circular trajectory. The axis of the circular trajectory extends longitudinally, and the cross-sectional shape of the circular trajectory is the same as that of the roller surface. When clamping the roller 600, adjusting the roller 600 so that its axis coincides with the axis of the circular trajectory achieves automatic centering of the roller 600. In this application, after the arc-shaped structure 4 is adjusted to form the roller clamping space by the drive component, automatic centering of the roller 600 is achieved, thereby improving the clamping effect of the roller 600.

[0038] Those skilled in the art will understand that the arc structure 4 of this application is not limited to the arc surface mentioned above, but can also be an arc. The arc can increase the clamping force on the roller 600 relative to the arc surface, while the arc surface can increase the contact area with the roller surface relative to the arc, thereby improving the clamping stability of the roller 600. All the above-mentioned structural forms of realizing the arc structure 4 should fall within the protection scope of this application.

[0039] In a preferred embodiment, both the mounting member 2 and the clamping member 3 extend vertically, and their highest points in the vertical direction are lower than the highest point of the circular trajectory in the vertical direction. Since the circular trajectory coincides with the cross-sectional shape of the roller surface when the roller 600 is within the roller clamping space, the highest point of the circular trajectory in the vertical direction is the highest point of the cross-sectional shape of the roller surface. Setting the highest points of the mounting member 2 and the clamping member 3 in the vertical direction lower than the highest point of the circular trajectory in the vertical direction ensures that, when clamping the roller 600, their highest points in the vertical direction are lower than the highest point of the cross-sectional shape of the roller surface. Turning of the roller 600 is often performed within a closed CNC machine tool 1000. However, the vertical space within a commonly used CNC machine tool 1000 is limited. By setting the highest points of the mounting member 2 and the clamping member 3 in the vertical direction lower than the highest point of the cross-sectional shape of the roller surface when clamping the roller 600, the installation of the roller fixture 100 is facilitated, without being limited by the space constraints within the CNC machine tool 1000.

[0040] Furthermore, the roller clamp 100 of this application adjusts the size of the roller clamping space by adjusting the distance between the mounting members 2 in the lateral direction. This adjustment method can also be performed in a closed CNC machine tool 1000, which shows that the roller clamp 100 has better adaptability.

[0041] It should be noted that, in the description of this disclosure, unless otherwise stated, the terms "upper," "lower," "left," "right," "front," "back," "inner," and "outer," etc., indicating orientation or positional relationships, are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0042] For ease of explanation, in the description of the implementation method, vertical refers to the up-down direction, longitudinal refers to the front-back direction, and horizontal refers to the left-right direction.

[0043] In some embodiments, the mounting component 2 includes a long rectangular segment, a trapezoidal segment, and a short rectangular segment connected sequentially from top to bottom. The long rectangular segment is connected to the upper bottom surface of the trapezoidal segment, and the short rectangular segment is connected to the lower bottom surface of the trapezoidal segment. The front and rear widths of the long rectangular segment, the trapezoidal segment, and the short rectangular segment are all greater than the front and rear widths of the clamping component 3, so as to provide an installation area for the clamping component 3 and ensure a stable connection.

[0044] Specifically, the front-to-back width of the short rectangular segment is greater than that of the long rectangular segment. The short rectangular segment moves and cooperates with the adjusting guide rail 1 in the left-to-right direction. By increasing the size of the short rectangular segment, the contact area between the short rectangular segment and the adjusting guide rail 1 is increased, thereby improving the stability of the mounting component 2 during the movement process.

[0045] Furthermore, the bottom surface of the short rectangular segment is provided with a guide 5, which moves in conjunction with the adjusting guide rail 1 in the left and right directions to further improve the stability of the mounting component 2 during the movement.

[0046] Preferably, the guide member 5 is a guide block forming a limiting groove 63, and the upper part of the adjusting guide rail 1 is provided with a limiting protrusion. The limiting groove 63 is a dovetail groove. The limiting protrusion and the limiting groove 63 are in movable cooperation in the left and right direction, in limiting cooperation in the front and back direction, and in limiting cooperation in the left and right direction, so as to further improve the stability of the mounting member 2 during the movement.

[0047] Those skilled in the art will understand that the cooperation between the guide 5 and the adjusting guide rail 1 in this application is not limited to the limiting groove 63 and the limiting protrusion, but can also be the guide sleeve and the guide rod, or the ball slider and the ball linear guide. All of the above cooperation methods should fall within the protection scope of this application.

[0048] In a preferred embodiment, each mounting member 2 is provided with a clamping member 3, and the two clamping members 3 are arranged symmetrically in the transverse direction. The left clamping member 3 is installed on the right side of the left mounting member 2, and the right clamping member 3 is installed on the left side of the right mounting member 2. The right side of the left clamping member 3 forms an arc-shaped structure 4, and the left side of the right clamping member 3 forms an arc-shaped structure 4.

[0049] In some embodiments, the clamping member 3 is located above the adjusting guide rail 1 and the lower bottom surface of the clamping member 3 is in contact with the upper top surface of the guide member 5 so that the guide member 5 supports the clamping member 3, thereby improving the load-bearing capacity of the clamping member 3.

[0050] Preferably, the clamping member 3 is made of nylon material, which has deformability and good wear resistance. The deformability of the nylon material allows the arc-shaped structure 4 of the clamping member 3 to fit well with the roller surface, thereby improving the clamping tightness of the clamping member 3 on the roller 600 and thus improving the stability of the roller 600 during turning. The good wear resistance of the nylon material also gives the clamping member 3 a longer service life, reducing the frequency of clamping member 3 replacement and thus improving the turning efficiency of the roller 600.

[0051] Preferably, the clamping member 3 is detachably connected to the mounting member 2 to replace the clamping member 3 with one suitable for different rollers 600 and to replace the worn clamping member 3, thereby improving the practicality of the roller clamp 100.

[0052] Furthermore, the clamping component 3, the mounting component 2, the drive assembly, and the adjusting guide rail 1 are all detachably connected, allowing for flexible replacement of each component, thus facilitating the later maintenance and upgrade of the roller clamp 100.

[0053] It should be noted that the specific structure for achieving the detachable connection between the clamping part 3 and the mounting part 2 is well known to those skilled in the art and is not part of the core improvement of this application, so it will not be described in detail here; in addition to the nylon material mentioned above, the clamping part 3 can also be made of other non-metallic wear-resistant materials.

[0054] In some embodiments, the drive assembly includes a lead screw 6 and a nut seat 7, wherein the lead screw 6 extends in the left-right direction and is spaced apart from the adjusting guide rail 1 in the front-back direction; the nut seat 7 is threadedly engaged with the lead screw 6 and is fixedly connected to the mounting member 2.

[0055] Specifically, the lead screw 6 is located in front of the adjusting guide rail 1 and the center line of the lead screw 6 is parallel to the center line of the adjusting guide rail 1. The lead screw 6 is a trapezoidal low lift angle lead screw with good self-locking performance to maintain the force of the clamping member 3 on the roller surface, so that the clamping member 3 will not loosen during the turning process; the nut seat 7 is an L-shaped component, one end of the nut seat 7 is sleeved on the lead screw 6, and the other end of the nut seat 7 is fixedly connected to the guide member 5.

[0056] Furthermore, a rotary motor is provided at the end of the lead screw 6 to drive the lead screw 6 to rotate, thereby driving the nut seat 7 to move in the left and right direction on the lead screw 6, thereby driving the mounting part 2 to move in the left and right direction.

[0057] like Figure 2 As shown, preferably, the lead screw 6 includes two threaded sections 61 arranged symmetrically in the left-right direction. Each of the two threaded sections 61 is provided with a nut seat 7, and the two nut seats 7 are fixedly connected to the two mounting parts 2 in a one-to-one correspondence. The length of each threaded section 61 in the left-right direction determines the range of movement of the mounting part 2 in the left-right direction, and the threads on the two threaded sections 61 have opposite directions, thereby enabling the two nut seats 7 to move towards or away from each other.

[0058] Furthermore, the lead screw 6 also includes a smooth section 62 connecting the two threaded sections 61. Two limiting grooves are formed on the smooth section 62, symmetrically arranged in the left-right direction. The drive assembly also includes two limiting blocks 8, which correspond one-to-one with the two limiting grooves to limit the movement of the lead screw 6 in the left-right direction, thereby allowing the rotation of the lead screw 6 to drive the nut seat 7 to move. Simultaneously, the distance between the two limiting blocks 8 is set such that when the two nut seats 7 contact the two limiting blocks 8 respectively, the two clamping members 3 do not collide, thereby reducing wear between the two clamping members 3 and extending their service life.

[0059] In some embodiments, the lower bottom of the adjusting guide rail 1 is provided with a transition piece 9, which is used to connect with the base 500 of the CNC machine tool 1000. The transition piece 9 has various types to suit different bases 500 of the CNC machine tool 1000, thereby improving the versatility of the roller clamp 100.

[0060] like Figure 3 As shown, a specific embodiment of this application also provides a CNC machine tool 1000, including a turning tool 200 and a roller clamp 100, wherein the roller clamp 100 and the turning tool 200 are arranged longitudinally at intervals. Since the CNC machine tool 1000 adopts all the above embodiments of the roller clamp 100, the CNC machine tool 1000 has all the beneficial effects brought by the roller clamp 100.

[0061] In some embodiments, the CNC machine tool 1000 further includes a base 500, the top surface of which is a worktable, and mounting seats are provided at both ends of the longitudinal direction of the worktable. A three-jaw chuck 300 and a tailstock ejector pin 400 are respectively provided on the two mounting seats. The three-jaw chuck 300 is used to clamp one end of the roller shaft, and the tailstock ejector pin 400 is used to clamp the other end of the roller shaft. During the rotation of the roller 600, the three-jaw chuck and the tailstock ejector pin 400 rotate synchronously with the roller shaft.

[0062] In some embodiments, the base 500 is provided with a first moving mechanism and a second moving mechanism. The turning tool 200 is connected to the first moving mechanism and the turning tool 200 is connected to the second moving mechanism. The first moving mechanism and the second moving mechanism are respectively used to move the turning tool 200 and the roller clamp 100 along the longitudinal direction to avoid collision between the turning tool 200 and the roller clamp 100 during the turning process. At the same time, the distance between the roller clamp 100 and the turning tool 200 is fixed by the first moving mechanism and the second moving mechanism so that the roller clamp 100 can play the role of reducing vibration.

[0063] Specifically, the first moving mechanism is located on the top of the base 500, and the adjusting guide rail 1 of the roller clamp 100 is connected to the first moving mechanism so that the roller clamp 100 is supported by the worktable, thereby improving the load-bearing capacity of the roller clamp 100.

[0064] Furthermore, the CNC machine tool 1000 is covered with a cover to form a closed space.

[0065] It should be noted that the specific structures of the three-jaw chuck 300, the tailstock ejector pin 400, the first moving mechanism, and the second moving mechanism are well known to those skilled in the art and are not part of the core improvements of this application, so they will not be described in detail here.

[0066] In this application, when the roller 600 is placed on the CNC machine tool 1000 for turning, the adjusting guide rail 1 and the drive assembly of the roller fixture 100 are both located between the roller 600 and the worktable. The highest points of the mounting parts 2 and the clamping parts 3 in the vertical direction are both lower than the highest point of the roller 600 in the vertical direction. It does not require any additional installation space and can be applied to the enclosed CNC machine tool 1000. It has the advantages of strong adaptability and simple operation.

[0067] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0068] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0069] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0070] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A CNC machine tool, characterized in that, The CNC machine tool (1000) includes a turning tool (200) and a roller clamp (100), wherein the roller clamp (100) and the turning tool (200) are arranged longitudinally at intervals, and the roller clamp (100) includes: Adjust the guide rail (1) to extend laterally; Two mounting pieces (2) are movably fitted with the adjusting guide rail (1) along the lateral direction. Each of the two mounting pieces (2) has a clamping member (3) on its inner side along the lateral direction, and the clamping member (3) forms an arc-shaped structure (4) along its inner side along the lateral direction. A drive assembly for driving the two mounting pieces (2) to move closer to each other along the lateral direction to drive the arcuate structure (4) to form a roller clamping space; The arc structure (4) includes an arc surface, and all the arc surfaces forming the roller clamping space are located on the same circular trajectory. The axis of the circular trajectory extends longitudinally, and the mounting member (2) and the clamping member (3) both extend vertically. The highest point of the mounting member (2) and the clamping member (3) along the vertical direction is lower than the highest point of the circular trajectory along the vertical direction. The CNC machine tool (1000) is covered with a cover to form a closed space.

2. The CNC machine tool according to claim 1, characterized in that, The vertical top dimension of the mounting component (2) is smaller than the vertical bottom dimension of the mounting component (2).

3. The CNC machine tool according to claim 1, characterized in that, The adjusting guide rail (1) has a limiting protrusion at its vertical top, and the mounting part (2) has a limiting groove (63) at its vertical bottom. The limiting groove (63) is in lateral movable engagement with the limiting protrusion, in longitudinal limiting engagement with the limiting protrusion, and in lateral limiting engagement with the limiting protrusion; and / or, The vertical bottom of the adjusting guide rail (1) is provided with a transition piece (9), which is used to connect with the base of the CNC machine tool.

4. The CNC machine tool according to claim 1, characterized in that, The driving component includes: The lead screw (6) extends in the transverse direction and is spaced apart from the adjusting guide rail (1) in the longitudinal direction. The nut seat (7) is threadedly engaged with the lead screw (6) and fixedly connected to the mounting part (2).

5. The CNC machine tool according to claim 4, characterized in that, The lead screw (6) includes two threaded sections (61) arranged symmetrically along the transverse direction. The two threaded sections (61) are respectively provided with nut seats (7), and the two nut seats (7) are respectively fixedly connected to the two mounting parts (2) one by one.

6. The CNC machine tool according to claim 5, characterized in that, The lead screw (6) also includes a smooth section (62) connecting the two threaded sections (61), and a limiting groove is formed on the smooth section (62). The drive assembly also includes a limiting block (8) that cooperates with the limiting groove for limiting.

7. The CNC machine tool according to claim 1, characterized in that, Each of the mounting members (2) is provided with one of the clamping members (3), and the two clamping members (3) are arranged symmetrically along the transverse direction; and / or, The clamping member (3) is detachably connected to the mounting member (2); and / or, The clamping component (3) is made of nylon.

8. The CNC machine tool according to claim 1, characterized in that, The CNC machine tool (1000) also includes a base (500), on which a first moving mechanism and a second moving mechanism are provided. The turning tool (200) is connected to the first moving mechanism and the turning tool (200) is connected to the second moving mechanism. The first moving mechanism and the second moving mechanism are respectively used to move the turning tool (200) and the turning tool (200) along the longitudinal direction.

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