Adjustable clamping device for CNC lathes

Abstract

This utility model discloses an adjustable clamping device for CNC lathes, including a housing and at least one adjustable fixture. The housing extends along a first direction, with a clamping opening extending through one end. Each adjustable fixture includes multiple clamping components, which are spaced apart circumferentially along the housing. Each clamping component includes a clamping structure and an adjusting element. The clamping structure is located inside the housing and includes an arc-shaped clamping plate and a steel ball. The arc-shaped clamping plate extends circumferentially along the housing, and the steel ball is fixedly installed on the side of the arc-shaped clamping plate near the inside of the housing, for abutting against the outer peripheral wall of the workpiece. The adjusting element is driven to the arc-shaped clamping plate to drive the arc-shaped clamping plate to move the steel ball relative to the housing along a second direction, so that the size of the clamping space formed by the multiple clamping structures in each clamping component within the housing is adjustable, thereby clamping and fixing workpieces of different sizes. This expands the applicability of the adjustable clamping device for CNC lathes and improves its practicality.

Description

Technical Field

[0001] This utility model relates to the field of CNC lathe clamping technology, specifically to an adjustable clamping device for CNC lathes. Background Technology

[0002] CNC lathes are high-precision, high-efficiency automated machine tools equipped with multi-station turrets or power turrets. These machines possess a wide range of machining capabilities, capable of processing complex workpieces such as straight cylinders, inclined cylinders, arcs, and various threads, grooves, and worm gears. They feature linear interpolation, circular interpolation, and various compensation functions, demonstrating excellent economic benefits in the mass production of complex parts. CNC lathes typically use clamping devices to hold and fix workpieces for machining; however, existing clamping devices generally only accommodate workpieces of a single size, resulting in limited applicability. Utility Model Content

[0003] The main purpose of this invention is to provide an adjustable clamping device for CNC lathes, which aims to solve the above-mentioned problems.

[0004] To achieve the above objectives, this utility model proposes an adjustable clamping device for a CNC lathe, comprising:

[0005] A housing extending along a first direction, with a clamping opening extending through one end for inserting a workpiece into the housing; and,

[0006] At least one adjustable clamp is disposed in the housing. Each adjustable clamp includes multiple clamping assemblies, which are spaced apart circumferentially along the housing. Each clamping assembly includes a clamping structure and an adjusting member. The clamping structure is disposed inside the housing and includes an arc-shaped clamping plate and a steel ball. The arc-shaped clamping plate extends circumferentially along the housing. The steel ball is fixedly installed on the side of the arc-shaped clamping plate near the interior of the housing and is used to abut against the outer peripheral wall of the workpiece. The adjusting member is drivenly connected to the arc-shaped clamping plate to drive the arc-shaped clamping plate to move the steel ball relative to the housing in a second direction. This allows the size of the clamping space formed by the multiple clamping structures in each clamping assembly within the housing to be adjustable, so as to clamp and fix workpieces of different sizes.

[0007] Wherein, the first direction and the second direction are perpendicular in space.

[0008] Optionally, the adjusting member is a screw and is inserted into the housing corresponding to the clamping structure. The adjusting member can rotate about its axis and / or move along the second direction relative to the housing.

[0009] Each of the clamping components further includes:

[0010] A limiting bracket, fixedly installed on the inner wall of the housing, and extending along the second direction; and,

[0011] A fixing frame is fixedly installed on the side of the arc-shaped clamp away from the steel ball, and is located inside the limiting frame and is movably connected to the limiting frame. The fixing frame can move relative to the limiting frame in the second direction.

[0012] The adjusting component is rotatably connected to the fixed frame.

[0013] Optionally, the fixing frame is slidably connected to the limiting frame, and the fixing frame can slide relative to the limiting frame in the second direction.

[0014] Optionally, the limiting frame includes two limiting plates disposed on both sides of the fixed frame, and each limiting plate extends along the second direction;

[0015] The two limiting plates are respectively provided with a sliding structure between them and the fixed frame. The sliding structure includes a sliding groove and a sliding block that are adapted to slide and connected. One of the sliding groove and the sliding block is provided on the limiting plate and the other is provided on the fixed frame, so that the two limiting plates are adapted to slide and connected to the fixed frame respectively.

[0016] Optionally, the fixing frame is provided with an elastic pad and a damping spring. The elastic pad and the damping spring are distributed sequentially along the second direction. The elastic pad is fixedly connected to the steel ball. The damping spring is disposed between the elastic pad and the side wall of the fixing frame away from the steel ball and extends along the second direction.

[0017] Optionally, the end of the adjusting member away from the fixed frame is provided with a control disc, and the control disc is covered with a rubber sleeve.

[0018] Optionally, each of the adjustable clamps further includes a limiting ring, which is sleeved inside the housing and fixedly connected to the housing;

[0019] The plurality of clamping structures of each of the adjustable clamps are disposed within the limiting ring.

[0020] Optionally, multiple adjustable clamps are provided, and the multiple adjustable clamps are distributed sequentially at intervals along the first direction.

[0021] Optionally, two adjustable clamps are provided;

[0022] The adjustable clamping device for CNC lathes also includes two threaded push rods, which are disposed between the two adjustable clamps and symmetrically arranged on both sides of the housing along the first direction to clamp and fix the workpiece.

[0023] Optionally, the end of the housing away from the clamping port is provided with a mounting plate for fixed connection with a CNC lathe.

[0024] In the technical solution of this utility model, the multiple clamping structures in each of the adjustable fixtures can form a clamping space within the housing for clamping and fixing the workpiece. The adjustable component can drive the arc-shaped clamping plate and the steel ball to move along the second direction, thereby adjusting the spacing between the multiple clamping structures, that is, adjusting the size of the clamping space, so as to adapt to the clamping and fixing of workpieces of different sizes, expand the applicability of the adjustable clamping device for CNC lathes, and improve its practicality. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0026] Figure 1 A schematic diagram of an embodiment of the adjustable clamping device for CNC lathes provided by this utility model;

[0027] Figure 2 for Figure 1 A schematic diagram of the adjustable clamping device for a medium-sized CNC lathe;

[0028] Figure 3 for Figure 2 Schematic diagram of the adjustable clamp;

[0029] Figure 4 for Figure 3 A partial structural diagram of the adjustable clamp;

[0030] Figure 5 for Figure 3 A partial structural diagram of the adjustable clamp.

[0031] Explanation of icon numbers:

[0032]

[0033] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0036] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0037] CNC lathes are high-precision, high-efficiency automated machine tools equipped with multi-station turrets or power turrets. These machines possess a wide range of machining capabilities, capable of processing complex workpieces such as straight cylinders, inclined cylinders, arcs, and various threads, grooves, and worm gears. They feature linear interpolation, circular interpolation, and various compensation functions, demonstrating excellent economic benefits in the mass production of complex parts. CNC lathes typically use clamping devices to hold and fix workpieces for machining; however, existing clamping devices generally only accommodate workpieces of a single size, resulting in limited applicability.

[0038] In view of this, the present invention provides an adjustable clamping device 100 for CNC lathes. Figures 1 to 5 An embodiment of the adjustable clamping device 100 for CNC lathes provided by this utility model.

[0039] Please see Figures 1 to 3The adjustable clamping device 100 for CNC lathes includes a housing 1 and at least one adjustable clamp 2. The housing 1 extends along a first direction, with a clamping opening at one end for inserting a workpiece into the housing 1. The adjustable clamp 2 is disposed on the housing 1, and each adjustable clamp 2 includes multiple clamping components 21. The multiple clamping components 21 are distributed circumferentially along the housing 1. Each clamping component 21 includes a clamping structure and an adjusting element 213. The clamping structure is disposed within the housing 1 and includes an arc-shaped clamping plate 211 and a steel ball 212. The arc-shaped clamping plate 211 extends along the first direction, with a clamping opening at one end for inserting a workpiece into the housing 1. The housing 1 extends circumferentially, and the steel ball 212 is fixedly installed on the side of the arc-shaped clamping plate 211 near the interior of the housing 1 to abut against the outer peripheral wall of the workpiece. The adjusting member 213 is drivenly connected to the arc-shaped clamping plate 211 to drive the arc-shaped clamping plate 211 to move the steel ball 212 relative to the housing 1 in a second direction, so that the size of the clamping space formed by the multiple clamping structures in each clamping assembly 21 within the housing 1 is adjustable to clamp and fix workpieces of different sizes; wherein, the first direction and the second direction are perpendicular to each other in space.

[0040] In this utility model, the multiple clamping structures in each of the adjustable clamps 2 can form a clamping space within the housing 1 for clamping and fixing the workpiece. The adjustable member 213 can drive the arc-shaped clamping plate 211 and the steel ball 212 to move along the second direction, thereby adjusting the spacing between the multiple clamping structures, i.e., adjusting the size of the clamping space, so as to adapt to the clamping and fixing of workpieces of different sizes, expand the applicability of the adjustable clamping device 100 for CNC lathes, and improve its practicality.

[0041] It should be noted that in this utility model, the shape of the shell 1 is not fixed. It can be cylindrical, in which case the first direction is its axial direction and the second direction is its radial direction. Of course, the shell 1 can also be a cuboid, in which case the first direction is its length direction and the second direction is its width direction or height direction.

[0042] The adjustable clamping device 100 for CNC lathes provided by this utility model clamps and fixes the workpiece as follows: the workpiece is inserted into the housing 1 through the clamping port, and the clamping structure is driven by the adjusting member 213 to move closer to the workpiece along the second direction until the steel ball 212 abuts against the workpiece, thereby realizing the positioning and clamping fixation of the workpiece.

[0043] Further, please refer to Figure 2 and Figure 3In one embodiment of this utility model, the adjusting member 213 is a screw, and is inserted into the housing 1 corresponding to the clamping structure. The adjusting member 213 can rotate relative to the housing 1 about its axis and / or move along the second direction. Each clamping assembly 21 further includes a limiting frame 215 and a fixing frame 214. The limiting frame 215 is fixedly installed on the inner wall of the housing 1 and extends along the second direction. The fixing frame 214 is fixedly installed on the side of the arc-shaped clamping plate 211 away from the steel ball 212, and is located inside the limiting frame 215 and is movably connected to the limiting frame 215. The fixing frame 214 can move relative to the limiting frame 215 along the second direction. The adjusting member 213 is rotatably connected to the fixing frame 214. Thus, the fixed frame 214 and the limiting frame 215 cooperate to limit the movement, preventing the fixed frame 214 from rotating with the adjusting member 213. This allows the clamping structure to move only along the second direction under the combined action of the adjusting member 213 and the limiting frame 215, thereby adjusting the size of the clamping space.

[0044] Furthermore, the fixing frame 214 is slidably connected to the limiting frame 215, and the fixing frame 214 can slide relative to the limiting frame 215 in the second direction.

[0045] Further, please refer to Figure 3 and Figure 4 The limiting frame 215 includes two limiting plates 2151 respectively disposed on both sides of the fixed frame 214, and each limiting plate 2151 extends along the second direction; the two limiting plates 2151 are respectively provided with a sliding structure between them and the fixed frame 214, the sliding structure includes a sliding groove 3 and a sliding block 4 adapted to slide and connect, one of the sliding groove 3 and the sliding block 4 is disposed on the limiting plate 2151, and the other is disposed on the fixed frame 214, so that the two limiting plates 2151 are adapted to slide and connect with the fixed frame 214 respectively.

[0046] For more details, please see Figures 3 to 5 In one embodiment of the present invention, the slide groove 3 is opened on the side of the limiting plate 2151 facing the fixing frame 214, and the slider 4 is disposed on the fixing frame 214.

[0047] Specifically, the fixing frame 214 is provided with an elastic pad and a damping spring. The elastic pad and the damping spring are distributed sequentially along the second direction. The elastic pad is fixedly connected to the steel ball 212. The damping spring is located between the elastic pad and the side wall of the fixing frame 214 away from the steel ball 212, and extends along the second direction.

[0048] Thus, when the workpiece vibrates during processing, the vibration is transmitted to the steel ball 212 that is in contact with the workpiece. At this time, the vibration can be absorbed by the elastic pad and the damping spring, which greatly reduces the impact of the vibration on the workpiece, provides good protection for the part processing, improves the practicality of the device, and meets the user's needs.

[0049] Specifically, for the embodiment described above where "the adjusting element 213 is a screw", please refer to [link to embodiment]. Figure 1 and Figure 2 The adjusting member 213 has a control disc 5 at one end away from the fixed frame 214, and the control disc 5 is covered with a rubber sleeve. In this way, the control disc 5 is provided to facilitate operation by the staff, and the rubber sleeve can prevent the staff from getting their hands scratched due to frequent rotation of the screw.

[0050] For details, please refer to Figure 2 Each of the adjustable clamps 2 further includes a limiting ring 22, which is sleeved inside the housing 1 and fixedly connected to the housing 1; a plurality of clamping structures of each of the adjustable clamps 2 are disposed inside the limiting ring 22.

[0051] Specifically, in some embodiments of this utility model, multiple adjustable clamps 2 are provided, and the multiple adjustable clamps 2 are distributed sequentially at intervals along the first direction; thus, the workpiece is subjected to uniform force and the clamping is stable; in addition, the adjustable clamping device 100 for CNC lathes is not only suitable for clamping and fixing conventional workpieces such as cylindrical and cuboid shapes, but also suitable for clamping and fixing unconventional workpieces such as stepped shapes, with a wide range of applications and high practicality.

[0052] It should be noted that the number of adjustable clamps 2 is not limited, and can be two, three, or four, etc.

[0053] Further, please refer to Figure 2 In one embodiment of this utility model, two adjustable clamps 2 are provided; the adjustable clamping device 100 for CNC lathes further includes two threaded push rods 6, which are disposed between the two adjustable clamps 2 and symmetrically arranged on both sides of the housing 1 along the first direction to clamp and fix the workpiece. Thus, the threaded push rods 6 further improve the clamping stability of the workpiece, and the structure is simple and low-cost.

[0054] For details, please refer to Figure 1 and Figure 2 The housing 1 is provided with a mounting plate 7 at the end away from the clamping port for fixed connection with the CNC lathe.

[0055] Furthermore, the connection method between the mounting plate 7 and the CNC lathe is not limited; it can be a threaded connection, a snap-fit ​​connection, welding, etc.

[0056] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An adjustable clamping device for a CNC lathe, characterized in that, The adjustable clamping device for the CNC lathe includes: A housing extending along a first direction, with a clamping opening extending through one end for inserting a workpiece into the housing; and, At least one adjustable clamp is disposed in the housing. Each adjustable clamp includes multiple clamping assemblies, which are spaced apart circumferentially along the housing. Each clamping assembly includes a clamping structure and an adjusting member. The clamping structure is disposed inside the housing and includes an arc-shaped clamping plate and a steel ball. The arc-shaped clamping plate extends circumferentially along the housing. The steel ball is fixedly installed on the side of the arc-shaped clamping plate near the interior of the housing and is used to abut against the outer peripheral wall of the workpiece. The adjusting member is drivenly connected to the arc-shaped clamping plate to drive the arc-shaped clamping plate to move the steel ball relative to the housing in a second direction. This allows the size of the clamping space formed by the multiple clamping structures in each clamping assembly within the housing to be adjustable, so as to clamp and fix workpieces of different sizes. Wherein, the first direction and the second direction are perpendicular in space.

2. The adjustable clamping device for CNC lathes as described in claim 1, characterized in that, The adjusting member is a screw and is inserted into the housing corresponding to the clamping structure. The adjusting member can rotate relative to the housing about its axis and / or move along the second direction. Each of the clamping components further includes: A limiting bracket, fixedly installed on the inner wall of the housing, and extending along the second direction; and, A fixing frame is fixedly installed on the side of the arc-shaped clamp away from the steel ball, and is located inside the limiting frame and is movably connected to the limiting frame. The fixing frame can move relative to the limiting frame in the second direction. The adjusting component is rotatably connected to the fixed frame.

3. The adjustable clamping device for CNC lathes as described in claim 2, characterized in that, The fixing frame is slidably connected to the limiting frame, and the fixing frame can slide relative to the limiting frame in the second direction.

4. The adjustable clamping device for CNC lathes as described in claim 3, characterized in that, The limiting frame includes two limiting plates disposed on both sides of the fixed frame, and each limiting plate extends along the second direction; The two limiting plates are respectively provided with a sliding structure between them and the fixed frame. The sliding structure includes a sliding groove and a sliding block that are adapted to slide and connected. One of the sliding groove and the sliding block is provided on the limiting plate and the other is provided on the fixed frame, so that the two limiting plates are adapted to slide and connected to the fixed frame respectively.

5. The adjustable clamping device for a CNC lathe as described in claim 2, characterized in that, The fixing frame is provided with an elastic pad and a damping spring. The elastic pad and the damping spring are distributed sequentially along the second direction. The elastic pad is fixedly connected to the steel ball. The damping spring is located between the elastic pad and the side wall of the fixing frame away from the steel ball and extends along the second direction.

6. The adjustable clamping device for a CNC lathe as described in claim 2, characterized in that, The adjusting component has a control disc at one end away from the fixed frame, and the control disc is covered with a rubber sleeve.

7. The adjustable clamping device for a CNC lathe as described in claim 1, characterized in that, Each of the adjustable clamps further includes a limiting ring, which is sleeved inside the housing and fixedly connected to the housing; The plurality of clamping structures of each of the adjustable clamps are disposed within the limiting ring.

8. The adjustable clamping device for a CNC lathe as described in any one of claims 1-7, characterized in that, The adjustable clamps are provided in multiple ways, and the multiple adjustable clamps are distributed at intervals along the first direction.

9. The adjustable clamping device for a CNC lathe as described in claim 8, characterized in that, Two adjustable clamps are provided; The adjustable clamping device for CNC lathes also includes two threaded push rods, which are disposed between the two adjustable clamps and symmetrically arranged on both sides of the housing along the first direction to clamp and fix the workpiece.

10. The adjustable clamping device for a CNC lathe as described in claim 1, characterized in that, The housing is provided with a mounting plate at the end away from the clamping port for fixed connection with the CNC lathe.

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