Workpiece clamping device

Abstract

The utility model relates to a clamping device, belongs to the technical field of machining, and particularly relates to a workpiece clamping device which comprises a supporting table, a supporting frame, a track disc, a connecting frame assembly and a clamping mechanism. Supporting frames on the two sides of a supporting table provide bottom supporting for a rail disc, a positioning disc on the rail disc is provided with a sliding rail, a connecting frame assembly is matched with the sliding rail through a connecting pipe, an included angle can be adjusted, the bottom of a workpiece is supported when the included angle becomes small and declines, and the distance can be adjusted through a second telescopic rod so as to adapt to different workpiece sizes. A clamp of the clamping mechanism is matched with a telescopic first telescopic rod to achieve multi-point, telescopic and adjustable clamping of the workpiece. According to the clamping device, the effect of accurately and stably clamping workpieces with different sizes and shapes is achieved, and the problems that an existing clamping device is poor in adaptability to the workpieces, not firm in clamping and unstable in structure are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical processing technical field especially a workpiece clamping device for workpiece. BACKGROUND

[0002] In the mechanical processing industry, workpiece clamping device is one of the key equipment to guarantee the processing precision and efficiency. Precise and stable clamping can ensure that the workpiece maintains a fixed posture during processing, thereby realizing high-quality processing operation.

[0003] Through the search of the patent with the announcement number CN221560510U, a workpiece clamping device for numerical control milling machine is disclosed, which comprises a fixed bottom plate, the upper part of the fixed bottom plate is provided with support columns at both ends in the transverse direction, the support columns are provided with rotating shafts, the rotating shafts are installed with limit plates at one end inside the support columns, rotating support frames are arranged between the limit plates, the outer surface of the support column at the transverse side of the rotating support frame is provided with a driving motor, the driving motor is connected with the rotating shaft, and the outer surface of the support column below the rotating shaft is provided with a first telescopic device. The utility model has the advantages of reasonable design, simple and stable structure, and strong practicability; the workpiece can be rotated to different angles for processing operation; the stability and firmness of the position of the workpiece when rotated to different angles for processing can be ensured, displacement during processing is avoided, the stability of processing precision is ensured; the workpiece in a larger size range can be clamped conveniently, the application range is improved, and the utility model is suitable for popularization and use.

[0004] Based on the above search and the existing technology, it is found that most existing workpiece clamping devices have obvious limitations. On the one hand, the ability to adapt to workpieces of different sizes is poor. Common clamps use fixed spacing or simple adjustment clamping structures, which are difficult to quickly and accurately adjust the clamping range according to the actual size of the workpiece. For example, when facing a batch of workpieces with large size differences, workers need to spend a lot of time manually adjusting the clamps, and even the workpiece may not be clamped firmly due to improper adjustment, affecting subsequent processing. On the other hand, for workpieces with special shape characteristics, such as uneven surfaces or irregular bottoms, existing clamps lack targeted design and cannot provide reliable multi-point adjustable clamping and bottom support function, which can easily cause displacement or shaking of the workpiece during processing due to uneven stress, reducing processing precision. In addition, the overall structural stability of traditional workpiece clamping devices is insufficient, the support frame design is not stable enough, and it cannot effectively resist external force impact and vibration during processing. At the same time, the bottom support lacks anti-slip design, and under complex working conditions in the processing site, the device is prone to sliding, thereby interfering with the processing process. These problems seriously restrict the practical performance of existing workpiece clamping devices and need to be improved. UTILITY MODEL CONTENTS

[0005] In order to solve the above technical problems, the utility model provides a kind of for workpiece clamping device, the utility model reaches the effect of accurate, stable clamping workpiece of different sizes and shapes, solve the problem of poor adaptability of existing clamping device to workpiece, clamping is not firm, structure is not stable.

[0006] The technical solution for achieving the purpose of the utility model is as follows: a workpiece clamping device includes a support table, and further includes;

[0007] Support frame, the support frame is arranged on both sides of the support table;

[0008] Track disc, the track disc is arranged at the adjacent end of the two support frames;

[0009] The track disc includes a positioning disc in the shape of a circle, and a sliding rail is formed in the adjacent end edge of the two positioning discs for sliding with the adjacent end of the connecting frame assembly;

[0010] Connecting frame assembly, the connecting frame assembly is symmetrically arranged between the two track discs, and the included angle is adjusted by rotation between the two track discs;

[0011] Clamping mechanism, the clamping mechanism is arranged between the two connecting frame assemblies, and at least three sets of clamping mechanisms are arranged between each set of connecting frame assemblies.

[0012] In some embodiments, the support frame includes two inverted T-shaped support arms.

[0013] In some embodiments, the connecting frame assembly includes a limiting frame in the shape of a frame, the two ends of the limiting frame are connected with second telescopic rods extending corresponding to the edge of the positioning disc, the second telescopic rod is connected with a connecting pipe inside the sliding rail outside the side close to the positioning disc, and the connecting pipe is externally screwed with a fixing bolt extending inside the sliding rail.

[0014] In some embodiments, the clamping mechanism includes a clamp connected to the inner side of the limiting frame, and the inner side of the clamp and the limiting frame is connected with a first telescopic rod that can be extended.

[0015] In some embodiments, the bottom of the support table is provided with at least four T-shaped support legs, and the bottom of each support leg is provided with anti-skid lines.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] One: the utility model discloses a unique connecting frame assembly, it includes the limit frame that is frame type, the second telescopic link of two ends connecting limit frame and positioning disc and the connecting pipe of the sliding connection of positioning disc slide rail, the spacing between two connecting frame assemblies can be telescopic adjusted through the second telescopic link, can change the relative distance of the farthest end according to different workpiece size, and the clamping mechanism is convenient for the adaptive clamping of different size workpieces, the connecting pipe can slide in the slide rail to adjust the included angle size of two connecting frame assemblies, and when the included angle is small and is inclined downward, not only can the workpiece be clamped on both sides of the multiple points, but also can the workpiece bottom processed be supported to incline, when the workpiece is subjected to processing stress, the bottom can also be stably supported, solve the problem that the existing clamp is difficult to simultaneously consider the accurate adaptive clamping of different size workpieces and provide bottom support for special-shaped workpieces (such as long strip-shaped and irregular workpiece bottom, the traditional clamp cannot guarantee the bottom stability while clamping).

[0018] Second: the utility model discloses that multiple sets of clamping mechanisms are arranged between two connecting frame assemblies, and the clamps of each clamping mechanism are connected with the inner side of the limit frame through the telescopic first telescopic link, and the clamping mode of multiple points and telescopic adjustment can stably clamp the outside of the workpiece with uneven surface, greatly improve the adaptability of clamping different shape workpieces, solve the problem that the existing clamp is not firm and is easy to appear loose displacement for the workpiece with uneven surface. BRIEF DESCRIPTION OF DRAWINGS

[0019] The utility model will be explained further in combination with the drawings and examples:

[0020] Figure 1 It is two clamping mechanism first morphological structure schematic diagram provided in an embodiment of the utility model;

[0021] Figure 2 It is a single group of clamp mechanism structure schematic diagram provided in an embodiment of the utility model;

[0022] Figure 3 It is the clamping mechanism half cut structure schematic diagram provided in an embodiment of the utility model;

[0023] Figure 4 It is the clamping mechanism downwardly inclined state stereoscopic structure schematic diagram provided in an embodiment of the utility model;

[0024] Figure 5 It is the clamping mechanism downwardly inclined state side view provided in an embodiment of the utility model.

[0025] EXPLANATION OF REFERENCE NUMERALS:

[0026] 1, support platform; 101, support arm; 102, support leg; 2, positioning disc; 201, slide rail; 4, connecting pipe; 401, fixing bolt; 5, limiting frame; 501, clip; 502, first telescopic rod; 6, second telescopic rod. DETAILED DESCRIPTION

[0027] The utility model is described in detail below, and the technical scheme in the utility model embodiment is clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0028] The utility model discloses an improve in this provides a kind of for workpiece clamping device, the technical scheme of the utility model is:

[0029] As Figure 1 - Figure 5The utility model discloses a workpiece clamping device, including support table 1 is provided with support frame on both sides of support table 1, and support frame includes two inverted T type support arm 101, and two support arm 101 are welded fixed on both sides of support table 1, and the effect of bottom support is given to track disc, and one end of two support frames is adjacent and is provided with track disc, and track disc includes the locating disc 2 of circular, and the adjacent end edge of two locating disc 2 is all opened a circle and is slid with the slide rail 201 of adjacent end connecting frame assembly, and the connecting frame assembly is symmetrically set up between two track discs, and the connecting frame assembly can rotate and adjust the included angle between two track discs, and the connecting frame assembly includes the limiting frame 5 of frame type, and the both ends of limiting frame 5 are connected with the second telescopic rod 6 of extending corresponding locating disc 2 edge, and the second telescopic rod 6 is connected with the connecting pipe 4 of sliding connection with the inside of slide rail 201 on the outside close to locating disc 2 side, and the outside of connecting pipe 4 is connected with the fixed bolt 401 of extending the inside of slide rail 201, and the connecting frame assembly in the utility model discloses not only can adjust the included angle between two track discs, to expose the outside of workpiece between two connecting frame assemblies fixed, facilitate directly to the surface of processing treatment, reduce traditional fixture between one hundred and eighty degrees included angle fixture, only can hold the outside half surface, and the clamping end will influence tool surface processing, and the relative distance between two connecting frame assemblies can be adjusted, to adapt to the fixing clamping of different size workpiece, specifically, the second telescopic rod 6 of connecting frame assembly is adjusted the distance between two connecting frame assemblies, and the relative distance of two connecting frame assemblies farthest ends is changed according to the size of different workpiece, and the spacing between the clamping mechanism on the connecting frame assembly and the workpiece of different size is adjusted, and the included angle between the two connecting frame assemblies on the slide rail 201 on the two locating disc 2 is adjusted by the two connecting pipes 4 on the connecting frame assembly, when the included angle between two connecting frame assemblies and corresponding clamping mechanism is adjusted, the fixed bolt 401 on the connecting pipe 4 is extended to the inside wall surface of slide rail 201 and is resisted, and two connecting frame assemblies are fixed on the locating disc 2 of two rotating discs in the foregoing adjustment process, when the included angle of two connecting frame assemblies is small and is inclined downward, not only can the workpiece be clamped on both sides, but also can be inclined to support the bottom of the workpiece, and the workpiece can be stably supported when the workpiece is processed.

[0030] The clamping mechanism is arranged between the two connecting frame assemblies, and at least three sets of clamping mechanisms are arranged between each set of connecting frame assemblies. The clamping mechanism comprises a clamp 501 connected to the inner side of the limiting frame 5, and the clamp 501 and the inner side of the limiting frame 5 are connected by a first telescopic rod 502 which can be telescoped. The clamp 501 in the technical solution is a common clamping mechanism, which is a prior art known in the art, and therefore will not be described in detail in the technical solution. The clamping mechanism adopts at least three sets on the same side of the fixed workpiece, and each set of clamping mechanism can be telescoped and adjusted, so as to clamp and fix the outer side of the workpiece with uneven surface at multiple points. In addition, the bottom of the support table 1 is provided with at least four T-shaped support legs 102, and the bottom of each support leg 102 is provided with anti-skid lines.

[0031] As shown in Figure 4 , in an embodiment, the two inverted T-shaped support arms 101 of the support frame are welded and fixed with the support table 1. Through such arrangement, stable bottom support is provided for the track disc, the stability of the entire device structure is ensured, the subsequent track disc can normally play its function in the device, and the clamping operation of the workpiece is facilitated.

[0032] As shown in Figure 2 and Figure 4 , in an embodiment, the connecting pipe 4 of the connecting frame assembly is slidably connected with the inner slide rail 201 of the positioning disc 2, and the outer part of the connecting pipe 4 is threadedly connected with a fixing bolt 401. Through the sliding of the connecting pipe 4 in the slide rail 201 and the cooperation of the fixing bolt 401, the size of the included angle between the connecting frame assemblies can be adjusted, and then the exposure of the outer side of the workpiece can be adjusted according to the actual needs, so that the workpiece is clamped. When the included angle between the two connecting frame assemblies becomes smaller and inclines downward, this adjustment mode also provides additional inclined support for the bottom of the workpiece, enhances the stability of the workpiece during machining, ensures smooth machining, and after machining is completed, the included angle can be adjusted as needed and fixed, so that the stability of the structure during clamping the workpiece is ensured.

[0033] As shown in Figure 1 - Figure 4 , in an embodiment, the second telescopic rod 6 of the connecting frame assembly is connected between the limiting frame 5 and the corresponding positioning disc 2. Through the arrangement of the second telescopic rod 6, the relative distance between the two connecting frame assemblies can be adjusted, so that the clamping mechanism can better clamp and fix workpieces of different sizes.

[0034] As shown in Figure 1 , Figure 3 and Figure 4As shown in the drawings, in an embodiment, the clamps 501 of the clamping mechanism are connected to the inner side of the limiting frame 5 through the first telescopic rods 502; through the arrangement of the first telescopic rods 502, the clamping mechanism can realize multi-point telescopic adjustment clamping and fixing of the outer side of the workpiece with uneven surface, and the adaptability and stability of clamping workpieces of different shapes are improved.

[0035] As shown in the drawings, Figure 4 and Figure 5 As shown in the drawings, in an embodiment, the bottom of the support table 1 is provided with at least four groups of T-shaped support legs 102 with anti-skid lines on the bottom; through the arrangement of such support legs 102, a stable support foundation is provided for the entire workpiece clamping device, and the existence of the anti-skid lines further enhances the friction between the device and the placement plane, preventing unstable conditions such as sliding during use.

[0036] The working principle and use process of the utility model are as follows: first, according to the size of the workpiece to be clamped, the second telescopic rod 6 in the connecting frame assembly is adjusted to change the relative distance of the farthest ends of the two connecting frame assemblies, so that the clamping mechanism can correspond to the appropriate position to adapt to the size of the workpiece. Then, the connecting pipe 4 on the connecting frame assembly is slid in the sliding rail 201 of the track disc to adjust the size of the included angle between the two connecting frame assemblies. Considering the shape of the workpiece, processing requirements and other factors, if support is needed for the bottom of the workpiece, the included angle of the connecting frame assembly can be made smaller and inclined downward, so that the bottom of the workpiece is reliably supported. Then, the workpiece is placed between the clamping mechanism of the two connecting frame assemblies, and the clamps 501 in the clamping mechanism and the first telescopic rods 502 are used to clamp and fix the outer side of the workpiece in multiple points and with telescopic adjustment. After adjusting the included angle of the connecting frame assembly, the fixing bolt 401 is rotated to extend to the inner wall surface of the sliding rail 201 to abut, and the connecting frame assembly is fixed on the track disc. Then, the surface of the clamped and fixed workpiece can be processed accordingly. After processing is completed, the above steps are operated in reverse to remove the workpiece.

[0037] The technical means disclosed by the utility model scheme are not limited to the technical means disclosed by the above technical means, and also include technical solutions composed of equivalent replacement of the above technical features. The unfinished matters of the utility model belong to the common knowledge of those skilled in the art.

Claims

1. A workpiece clamping device comprising a support table (1), characterized in that: Also include; Support frame, the support frame is arranged in both sides of support table (1); Track disc, the track disc is arranged in the adjacent end of two support frames; The track disc includes a positioning disc (2) in a circular shape, and a sliding rail (201) is arranged on the adjacent end edge of the two positioning discs (2) for sliding with the adjacent end of the connecting frame assembly; Connecting frame assembly, the connecting frame assembly is symmetrically arranged between the two track discs, and the included angle is adjusted between the two track discs; Clamping mechanism, the clamping mechanism is arranged between the two connecting frame assemblies, and at least three sets of clamping mechanisms are arranged between each set of connecting frame assemblies.

2. A workpiece holding apparatus according to claim 1, wherein: The support frame includes two inverted T-shaped support arms (101).

3. A workpiece holding apparatus according to claim 1, wherein: The connecting frame assembly includes a limiting frame (5) in a frame shape, both ends of the limiting frame (5) are connected with the second telescopic rod (6) extending corresponding to the edge of the positioning disc (2), the second telescopic rod (6) is connected with the connecting pipe (4) slidingly connected with the inside of the sliding rail (201) outside the side close to the positioning disc (2), and the outside of the connecting pipe (4) is screw-connected with the fixed bolt (401) extending inside the sliding rail (201).

4. A workpiece holding apparatus according to claim 1, wherein: The clamping mechanism includes a clamp (501) connected to the inside of the limiting frame (5), and the inside of the clamp (501) and the limiting frame (5) is connected with the first telescopic rod (502) which can be extended.

5. A workpiece holding apparatus according to claim 1, wherein: The bottom of the support table (1) is provided with at least four sets of T-shaped support legs (102), and the bottom of each support leg (102) is provided with anti-skid lines.

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