Fine-adjustable clamp structure

Abstract

A fine-adjustable clamp structure comprises: a clamp structure having a first block body, a second block body and a driving member; one side of the first block body along a horizontal direction is provided with a first inclined surface, and the first inclined surface is provided with a first clamping part; the second block body is movably connected to the first block body, one side of the second block body is provided with a second inclined surface, and the second inclined surface is provided with a second clamping part; one side, far away from the first inclined surface, of the second block body is provided with a clamping surface, and a containing groove penetrates through the clamping surface along the horizontal direction; the driving piece acts on the first block body in a movable mode and is used for driving the first block body to move so that the second block body can slide in the horizontal direction. The adjusting structure is provided with an adjusting block and a pivoting piece; and the adjusting block is pivoted in the accommodating groove of the second block body through the pivoting piece. According to the utility model, the stability of clamping workpieces can be effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a clamp, in particular to a fine-tunable clamp structure. BACKGROUND

[0002] In engineering operations, workpieces are usually fixed on a machine table by a clamp when being processed to prevent the workpieces from being offset or skewed when machining tools (such as cutting tools, drills, etc.) act on the workpieces. Traditional clamps are mostly fixed clamps fixed on both sides of the workpieces and cannot adjust the distance between the clamps. Therefore, the fixed clamp structure can only be applied to workpieces of specific sizes, and if it is to be applied to workpieces of other sizes, the fixed clamp structure needs to be disassembled and repositioned, which is relatively limited in use and relatively inconvenient in mounting and dismounting the workpieces. On the other hand, the fixed clamp structure has limited clamping force when processing, which can easily cause the workpieces to loosen and reduce the processing accuracy.

[0003] In recent years, some manufacturers have developed movable clamp structures. A fixed clamp can be arranged at one end of a workpiece, and a movable clamp structure can be arranged at the other end. The movable clamp structure can be designed to move towards or away from the workpiece, can clamp workpieces of various sizes, and can provide different clamping forces, so its application range is wider.

[0004] However, whether it is the currently used fixed clamp structure or the movable clamp structure, the clamping surface of the clamp and the workpiece is a plane. Therefore, if the outer surface of the workpiece is not parallel or planar to the clamp structure, a gap will be formed between the clamp and the workpiece, which will cause the clamping force to not be fully applied to the workpiece. In this way, the workpiece may still loosen or skew during processing, which will relatively affect the processing accuracy and processing safety.

[0005] Therefore, how to provide an improved clamp structure to effectively solve the above problems is one of the urgent problems to be solved by manufacturers and researchers in the related field. UTILITY MODEL CONTENT

[0006] The main purpose of the utility model is to provide a fine-tunable clamp structure that can effectively improve the stability of clamping workpieces.

[0007] To achieve the above-mentioned utility model purposes, the utility model discloses a fine-tunable clamp structure, containing: a clamp structure has a first block, a second block and a driving piece, the first block has a first inclined plane along the side of a horizontal direction, and the first inclined plane is equipped with a first clamping portion, the second block is movably connected to the first block, wherein the second block has a second inclined plane along the side adjacent to the first inclined plane, and the second inclined plane is equipped with a second clamping portion corresponding to the first clamping portion, wherein the side of the second block away from the first inclined plane has a clamping surface, and a containing groove is through the clamping surface along the horizontal direction, the driving piece is movably acted on the first block to drive the first block displacement to make the second block slip along the horizontal direction, and an adjusting structure has an adjusting block and a pivot connecting piece, the adjusting block is pivoted in the containing groove of the second block through the pivot connecting piece and can rotate between a parallel position and a non-parallel position under the action of external force, when the adjusting block rotates to the parallel position, the abutting surface of the adjusting block is parallel to the clamping surface of the second block, when the adjusting block rotates to the non-parallel position, the abutting surface of the adjusting block is non-parallel to the clamping surface of the second block.

[0008] In an embodiment, the side of the containing groove away from the clamping surface has an arc-shaped bottom surface, the adjusting block has an arc surface that is attached to the arc-shaped bottom surface of the containing groove, so that when the adjusting block rotates relative to the second block, the arc surface of the adjusting block can slide along the arc-shaped bottom surface of the containing groove.

[0009] In an embodiment, when the adjusting block is contained in the containing groove, at least a part of the abutting surface is exposed from the containing groove.

[0010] In an embodiment, the abutting surface is provided with a plurality of convex parts that are arranged in an array and extend away from the second block.

[0011] In an embodiment, the top side of the second block has a shaft hole that is through and communicated with the containing groove along a vertical direction, the adjusting block has a pivot hole corresponding to the shaft hole, and the pivot connecting piece is through the shaft hole and the pivot hole.

[0012] In an embodiment, the second block further has a shaft slot that is provided on the side of the containing groove opposite to the shaft hole and corresponding to the shaft hole.

[0013] In an embodiment, the shaft hole is a threaded hole, and the inner wall surface is provided with internal threads, the pivot connecting piece is a screw, and the corresponding position of the shaft hole is provided with external threads.

[0014] In an embodiment, the first block has a through hole in the center, the driving piece is a screw, and the screw is through the through hole of the first block and abuts against the first block, the first block is downwardly displaced by downward rotation of the driving piece, thereby driving the second block to slide to one side.

[0015] In one embodiment, one of the first engaging portion and the second engaging portion is a dovetail seat, and the other is a corresponding dovetail groove for sliding the dovetail seat.

[0016] In one embodiment, the clamping structure has two second blocks; and the adjusting structure has two adjusting blocks pivotally mounted on the two second blocks in a rotatable manner.

[0017] Based on the purpose and effects of this utility model, preferred embodiments are described below, along with detailed descriptions in conjunction with the accompanying drawings. Attached Figure Description

[0018] Figure 1 This is a perspective view of a first preferred embodiment of the present invention.

[0019] Figure 2 This is an exploded view of the first preferred embodiment of the present invention.

[0020] Figure 3 This is a cross-sectional view of the first preferred embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram of the usage state of the first preferred embodiment of the present invention.

[0022] Figure 5 and Figure 6 This is a clamping diagram of the first preferred embodiment of the present invention, showing the clamping of parallel / non-parallel workpieces.

[0023] Figure 7 This is a perspective view of a second preferred embodiment of the present invention. Detailed Implementation

[0024] Please see Figures 1 to 3 As shown, the adjustable clamp structure provided in a first preferred embodiment of this utility model mainly includes a clamp structure 10 and an adjustment structure 20. Wherein:

[0025] The clamp structure 10 comprises a first block 11, two second blocks 12 and a driving member 13. The first block 11 is a metal block having a through hole 110 in the center thereof, and two first inclined surfaces 111 are respectively formed on two sides of the first block 11, and a first engaging portion 112 is formed in the center of each of the first inclined surfaces 111. The two second blocks 12 are arranged on two opposite sides of the first block 11 and are respectively adjacent to the two first inclined surfaces 111, and each of the second blocks 12 has a second inclined surface 121 on a side thereof facing the first inclined surface 111. The second inclined surface 121 has a second engaging portion 122 formed in the center thereof, corresponding to the first engaging portion 112. Thus, when the two second blocks 12 are connected to the first block 11, each of the second inclined surfaces 121 of the two second blocks 12 is tightly fitted with each of the first inclined surfaces 111 of the first block 11, and each of the second engaging portions 122 is engaged with each of the first engaging portions 112.

[0026] In the present embodiment, each of the first inclined surfaces 111 is an inner inclined surface and each of the second inclined surfaces 121 is an outer inclined surface; and each of the first engaging portions 112 of the first block 11 is an outwardly protruding dovetail, and each of the second engaging portions 122 of the two second blocks 12 is an inwardly recessed dovetail groove, and the dovetail groove is arranged to allow the dovetail to slide therein. In another embodiment, each of the first engaging portions is an inwardly recessed dovetail groove, and each of the second engaging portions of the two second blocks is an outwardly protruding dovetail.

[0027] The driving member 13 is arranged to act on the first block 11 to drive the first block 11 to move, so as to drive the two second blocks 12 to slide in a horizontal direction. In the present embodiment, the driving member 13 is a screw which penetrates through the through hole 110 of the first block 11 and abuts against the first block 11, and is arranged to be driven to rotate upwardly / downwardly, so as to drive the first block 11 to move upwardly / downwardly relative to the two second blocks 12 in a vertical direction. When the driving member 13 is driven to rotate downwardly, the first block 11 moves downwardly and pushes the two second blocks 12 to slide in the horizontal direction to two sides. When the driving member 13 is driven to rotate upwardly, the first block 11 moves upwardly and pushes the two second blocks 12 to slide in the horizontal direction from two sides to the center.

[0028] The second block 12 has a clamping surface 123 on one side of the second inclined surface 121 for contacting a workpiece. The second block 12 further has a receiving groove 124, an axial hole 125 and an axial groove 126. The receiving groove 124 is disposed on the clamping surface 123 and penetrates the clamping surface 123 along the horizontal direction. In the embodiment, the receiving groove 124 is a circular arc groove, and the side of the receiving groove 124 away from the clamping surface 123 has an arc-shaped bottom surface 124a. The axial hole 125 penetrates the second block 12 from above along the vertical direction and communicates with the receiving groove 124. The axial groove 126 is disposed on the side of the receiving groove 124 opposite the axial hole 125 and corresponds to the axial hole 125.

[0029] The adjustment structure 20 has two adjustment blocks 21 and two pivot members 22. The two adjustment blocks 21 are respectively pivotally disposed in the two receiving grooves 124 of the two second blocks 12 through the two pivot members 22. Specifically, each adjustment block 21 is approximately arc-shaped in the embodiment, and has an arc surface 211 and an abutting surface 212 on opposite sides. The curvature of the arc surface 211 of the adjustment block 21 corresponds to the curvature of the arc-shaped bottom surface 124a of the receiving groove 124, so that when the adjustment block 21 rotates relative to the second block 12, the arc surface 211 of the adjustment block 21 can slide along the arc-shaped bottom surface 124a of the receiving groove 124. When the adjustment block 21 is disposed in the receiving groove 124, the abutting surface 212 is exposed from the receiving groove 124. The adjustment block 21 has a plurality of protrusions 213 disposed on the abutting surface 212, which are arranged in an array and extend away from the receiving groove 124. The adjustment block 21 has a pivot hole 214 in the center along the vertical direction, which corresponds to the axial hole 125 of the second block 12. The pivot member 22 penetrates the axial hole 125 of the second block 12 and the pivot hole 214 of the adjustment structure 20 along the vertical direction, and one end abuts in the axial groove 126, thereby pivotally disposing the adjustment block 21 in the receiving groove 124 of the second block 12. In this way, the adjustment block 21 can rotate relative to the second block 12 along the receiving groove 124 with the pivot member 22 as the axis. In the embodiment, the axial hole 125 is a threaded hole, and the inner wall surface is provided with internal threads; the pivot member 22 is a screw, and is provided with external threads corresponding to the axial hole.

[0030] The adjustment block 21 can rotate between a parallel position and a non-parallel position under the action of an external force. When the adjustment block 21 rotates to the parallel position, the abutting surface 212 of the adjustment block 21 is parallel to the clamping surface 123 of the second block 12. When the adjustment block 21 rotates to the non-parallel position, the abutting surface 212 of the adjustment block 21 is non-parallel to the clamping surface 123 of the second block 12.

[0031] According to the above structural configuration, when the user wants to perform the work of at least one workpiece W, the workpiece W is placed on a base plate 1, the top surface of the base plate 1 is respectively provided with two fixed blocks 2 apart from each other, and the clamp structure 10 is arranged between the two fixed blocks 2. In this way, each workpiece W can be placed between each fixed block 2 and the clamp structure 10. For example, in Figure 4 two workpieces W can be placed between the two fixed blocks 2 and the clamp structure 10. Then, the driving member 13 is rotated downward, the first block 11 is displaced downward, the second engaging part 122 (dove tail groove) of each second block 12 is respectively provided for the first engaging part 112 of the first block 11 to slide and guide, and each second inclined surface 121 of the two second blocks 12 is respectively in close contact with each first inclined surface 111 of the first block 11, and the two second blocks 12 are pushed and slid to the two sides, so that each workpiece W is pushed by each second block 12, and the two second blocks 12 and the two fixed blocks of the clamp structure 10 are respectively clamped each workpiece W.

[0032] It is worth noting that since each second inclined surface 121 of the two second blocks 12 is in close contact with each first inclined surface 111 of the first block 11, when machining, iron filings will not adhere to the joint, ensuring the accuracy of the machining, and through the rotation of the driving member 13, the tightness of the body can be adjusted, and the linkage guide between the first engaging part 112 and the second engaging part 122 is used to facilitate the upward pulling of the first block 11, that is, the left and right linkage loosening of the two second blocks 12, which is convenient for the user to take the workpiece. The utility model has the advantages of simple overall structure, low production cost, and effective improvement of productivity, and can be used as a manual or automatic clamp.

[0033] It is particularly worth mentioning that since the two sides of the clamp structure 10 are provided with the two adjustable blocks 21 which can be rotated, when each second block 12 abuts against one side of each workpiece W, each abutting surface 212 of each adjustable block 21 will abut against the outer surface of each workpiece W. If the outer surface of the workpiece W is parallel to the abutting surface 212 of the adjustable block 21, the adjustable block 21 can directly abut against the outer surface of the workpiece W at the parallel position without rotating, as shown in Figure 5 On the other hand, if the outer surface of the workpiece W is not parallel to the abutting surface 212 of the adjustable block 21, the adjustable block 21 will rotate relative to the workpiece W to the non-parallel position after contacting the outer surface of the workpiece W due to the force, so that the abutting surface 212 of the adjustable block 21 can be attached to the outer surface of the workpiece W, as shown in Figure 6The plurality of convex portions 213 arranged on the abutting surface 212 of the adjusting block 21 can also increase the frictional resistance and fixing strength between the workpiece W, effectively improving the clamping force. Therefore, whether the outer surface of the workpiece W is parallel or non-parallel to the second block 12, corresponding fine adjustment can be performed by rotating the adjusting structure 20, thereby effectively reducing the gap between the clamp structure 10 and the workpiece W and improving the fixing stability between the clamp structure 10 and the workpiece W.

[0034] Although the embodiment discloses that the clamp structure 10 has two second blocks 12 for arranging two adjusting structures 20, the utility model is not limited thereto. Please refer to Figure 7 As shown in the figure, the second preferred embodiment of the utility model provides a fine-adjustable clamp structure similar to the first preferred embodiment, comprising a clamp structure 30 and an adjusting structure 40. However, in the embodiment, the clamp structure 30 only arranges a first block 31, a second block 32 and a driving member 33. The adjusting structure 40 only arranges an adjusting block 41 and a pivoting member 42. By rotating the driving member 33 downward, the first block 31 is displaced downward, thereby pushing and sliding the second block 32 to one side, which can also achieve the above-mentioned use effect.

[0035] In summary, the fine-adjustable clamp structure provided by the utility model can automatically adjust the angle and gap between the workpiece when clamping the workpiece, thereby improving the stability of clamping workpieces with various surfaces.

[0036] The above is the preferred embodiment and design drawing of the utility model, but the preferred embodiment and design drawing are only illustrative and not used to limit the scope of the utility model. Any equivalent technical means or implementation within the scope of the claims is also within the scope of the utility model and is the applicant's right.

Claims

1. A tunable clamp structure, characterized by, The clamp structure comprises a first block, a second block and a driving member; the first block has a first inclined surface on one side thereof in a horizontal direction, and the first inclined surface is provided with a first clamping portion; the second block is movably connected to the first block, wherein the second block has a second inclined surface on one side thereof adjacent to the first inclined surface, and the second inclined surface is provided with a second clamping portion corresponding to the first clamping portion; the second block has a clamping surface on one side thereof away from the first inclined surface, and a receiving groove penetrates the clamping surface in the horizontal direction; the driving member is movably arranged on the first block to drive the first block to displace so as to drive the second block to slide in the horizontal direction; and The adjusting structure comprises an adjusting block and a pivot member; the adjusting block is pivotally arranged in the receiving groove of the second block through the pivot member, and can be rotated under external force between a parallel position and a non-parallel position; when the adjusting block is rotated to the parallel position, a contact surface of the adjusting block is parallel to the clamping surface of the second block; when the adjusting block is rotated to the non-parallel position, the contact surface of the adjusting block is non-parallel to the clamping surface of the second block. The receiving groove has an arc-shaped bottom surface on one side thereof away from the clamping surface; the adjusting block has an arc surface abutting against the arc-shaped bottom surface of the receiving groove, so that when the adjusting block is rotated relative to the second block, the arc surface of the adjusting block can slide along the arc-shaped bottom surface of the receiving groove.

2. The tunable clamp structure of claim 1, wherein, When the adjusting block is arranged in the receiving groove, at least a part of the contact surface is exposed from the receiving groove.

3. The tunable clamp structure of claim 1, wherein, The contact surface is provided with a plurality of convex portions arranged in an array and extending away from the second block.

4. The tunable clamp structure of claim 3, wherein, The second block has an axial hole penetrating and communicating with the receiving groove in a vertical direction; the adjusting block has a pivot hole corresponding to the axial hole, and the pivot member penetrates the axial hole and the pivot hole.

5. The tunable clamp structure of claim 1, wherein, The second block further has an axial groove arranged on one side of the receiving groove opposite to the axial hole and corresponding to the axial hole.

6. The tunable clamp structure of claim 5, wherein, The axial hole is a screw hole, and the inner wall surface is provided with internal threads; the pivot member is a screw, and is provided with external threads corresponding to the axial hole.

7. The tunable clamp structure of claim 5, wherein, The first block has a through hole in the center thereof; the driving member is a screw penetrating the through hole of the first block and abutting against the first block; the first block is driven to displace downward by rotating the driving member downward, so as to drive the second block to slide to one side.

8. The tunable clamp structure of claim 1, wherein, One of the first clamping portion and the second clamping portion is a dovetail seat, and the other is a corresponding dovetail groove for sliding the dovetail seat.

9. The tunable clamp structure of claim 1, wherein, The clamp structure has two second blocks; and the adjusting structure has two adjusting blocks rotatably pivotally arranged on the two second blocks, respectively.

10. The tunable clamp structure of claim 1, wherein, ​

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