Tool clamp stable in clamping

Abstract

The utility model discloses a work fixture stable in clamping, the work fixture stable in clamping comprises a fixture frame and a clamping cylinder fixed on one side of the fixture frame, the fixture frame is provided with a liftable base, the base is provided with an elastic chuck, the elastic chuck is provided with an inclined neck, the fixture frame is provided with a guide sleeve, and the guide sleeve is connected with the clamping cylinder. The guide sleeve is arranged on the base and arranged on the outer wall of the elastic chuck in a sleeving mode, the guide sleeve is provided with an inclined guide part and abuts against the neck part, first linkage plates are arranged on the two sides of the base, and second linkage plates are arranged on the two sides of one end of the clamp frame. When the pushing block moves forwards to enable the first linkage plate and the second linkage plate to be in a straight line and drive the base and the elastic chuck to descend together, the second linkage plate provides a supporting point for the first linkage plate, the transmission block prevents the first linkage plate and the second linkage plate from being bent by external force, and the elastic chuck is always kept at the moved position. And the product has the advantage of being stable in clamping.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a tooling clamp with stable clamping. Background Art

[0002] A fixture is a device used to secure workpieces during the manufacturing process, positioning them in the correct position for construction or testing. It typically consists of positioning components, clamping devices, tool guides, indexing devices, connecting elements, and a clamping base, enabling quick, convenient, and safe workpiece installation.

[0003] The elastic chuck is a commonly used device for achieving automatic centering and clamping of parts. Usually, the power source of the elastic chuck is to use a top, compressed air (cylinder), or liquid (hydraulic cylinder). However, the method of using the cylinder to push the guide sleeve to retract the elastic chuck and clamp the workpiece cannot exert sufficient clamping force, causing the workpiece to sink or detach from the elastic chuck. At the same time, unstable clamping also affects the consistency of material processing. Therefore, the applicant has made a useful design and found a solution to the above problems. The technical solution to be introduced below was produced in this context. Summary of the Invention

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned traditional clamp design and provide a product with stable clamping.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions.

[0006] A stable clamping tool fixture comprises a clamp frame and a clamping cylinder fixed on one side of the clamp frame, the clamp frame is provided with a liftable base, the base is provided with an elastic clamp, the elastic clamp is provided with an inclined neck, the clamp frame is provided with a guide sleeve, and is sleeved on the outer wall of the elastic clamp, the guide sleeve is provided with an inclined guide portion, and abuts the neck, first linkage plates are provided on both sides of the base, second linkage plates are provided on both sides of one end of the clamp frame, and abut one side of the first linkage plate, the piston rod of the clamping cylinder is provided with a push block, and transmission blocks are provided on both sides of the push block, and are hinged to the first linkage plate and the second linkage plate.

[0007] Preferably, the clamp frame is provided with at least two guide pillars passing through the base, and one end of the clamp frame is provided with a through hole for the guide sleeve to pass through.

[0008] Preferably, the base is provided with a threaded column, and a clearance is left between the base and the bottom of the clamp frame for the base to descend.

[0009] Preferably, a through hole is provided at one end of the clamp frame and the base, and is arranged on both sides of the through hole and the threaded column, and a connecting column is provided on the side wall of the through hole.

[0010] Preferably, the first linkage plate and the second linkage plate are arranged in the through hole, and one end of the first linkage plate and the second linkage plate is hinged to the connecting column.

[0011] Preferably, the elastic collet is threadedly connected to the threaded cylinder.

[0012] Preferably, the guide sleeve is provided with a stop portion, and abuts against the end surface of the clamp frame.

[0013] Beneficial effects:

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model transmits the air source to the clamping cylinder to make the pushing block move forward, so that the first linkage plate and the second linkage plate are in a straight line, and the base and the elastic clamp are lowered together. As the hinge point where the transmission block is hinged to the first linkage plate is farther away from the other end of the first linkage plate, when the torque applied to the transmission block by the clamping cylinder gradually increases, the torque transmitted to the base will also increase, achieving a multiplier effect, effectively increasing the clamping force of the elastic clamp to clamp the workpiece, and preventing the workpiece from separating from the spring clamp during the processing. The second linkage plate provides a support point for the first linkage plate, and cooperates with the transmission block to prevent the first linkage plate and the second linkage plate from bending by external force, so that the elastic clamp is always maintained in the position after the activity, so that the product has the advantage of stable clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of a stable clamping fixture of the utility model;

[0017] Figure 2 This is a schematic diagram of the side cross-sectional structure of a stable clamping fixture of the present invention;

[0018] Figure 3 This is a schematic diagram of the exploded structure of a stable clamping fixture of the present invention;

[0019] The corresponding relationship between the illustration labels and component names in the figure is as follows:

[0020] Figure numerals: 1. clamp frame; 2. clamping cylinder; 3. base; 4. elastic chuck; 5. guide sleeve; 6. through hole; 7. connecting column; 11. second linkage plate; 12. guide column; 13. through hole; 21. pushing block; 22. transmission block; 31. first linkage plate; 32. threaded cylinder; 41. neck; 51. guide part; 52. stop part. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left" and "right" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0023] In the embodiments of the present invention, "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0024] Reference example Figures 1 to 3 A stable clamping fixture includes a fixture frame 1 and a clamping cylinder 2 fixed to one side of the fixture frame 1. The fixture frame 1 is provided with a liftable base 3, the base 3 is provided with an elastic collet 4, the elastic collet 4 is provided with an inclined neck 41, the fixture frame 1 is provided with a guide sleeve 5, and is sleeved on the outer wall of the elastic collet 4. The guide sleeve 5 is provided with an inclined guide portion 51 and abuts the neck 41. First linkage plates 31 are provided on both sides of the base 3, and second linkage plates 11 are provided on both sides of one end of the fixture frame 1 and abut the first linkage plate 31. On one side, the piston rod of the clamping cylinder 2 is provided with a pushing block 21, and transmission blocks 22 are provided on both sides of the pushing block 21, and are hinged to the first linkage plate 31 and the second linkage plate 11. As the hinge point of the transmission block 22 hinged to the first linkage plate 31 is farther away from the other end of the first linkage plate 31, when the torque applied by the clamping cylinder 2 to the transmission block 22 gradually increases, the torque transmitted to the base 3 will also increase, achieving a multiplying force effect, effectively increasing the clamping force of the elastic collet 4 clamping the workpiece, and preventing the workpiece from escaping from the elastic collet 4 during processing;

[0025] It is worth mentioning that the clamp frame 1 is provided with at least two guide posts 12 which pass through the base 3. One end of the clamp frame 1 is provided with a through hole 13 for the guide sleeve 5 to pass through. The guide posts 12 provide a guide for the base 3.

[0026] It is worth mentioning that the base 3 is provided with a threaded cylinder 32, and a clearance is left between the base 3 and the bottom of the clamp frame 1 for its descent, and the threaded cylinder 32 is used in conjunction with the elastic collet 4;

[0027] It is worth mentioning that a through hole 6 is provided at one end of the clamp frame 1 and the base 3, and is arranged on both sides of the through hole 13 and the threaded column 32. The side wall of the through hole 6 is provided with a connecting column 7. When the first linkage plate 31 and the second linkage plate 11 are in an inclined state, the through hole 6 limits the rotation angle of the first linkage plate 31 and the second linkage plate 11, and correspondingly limits the range of rising and falling of the base 3;

[0028] It is worth mentioning that the first linkage plate 31 and the second linkage plate 11 are arranged in the through hole 6, and one end of the first linkage plate 31 and the second linkage plate 11 are hinged to the connecting column 7, and the first linkage plate 31 and the second linkage plate 11 rotate around the connecting column 7 as the axis;

[0029] It is worth mentioning that the elastic collet 4 is threadedly connected to the threaded cylinder 32, and the threaded connection facilitates the quick replacement of holes of the elastic collet 4 for clamping workpieces of different diameters;

[0030] It is worth mentioning that the guide sleeve 5 is provided with a stop portion 52, which abuts against the end face of the clamp frame 1. When the elastic clamp 4 descends, downward pressure is applied to the guide sleeve, so that the stop portion 52 is tightly pressed against the end face of the clamp frame 1. The guide sleeve 5 also provides a guiding function for the lifting and lowering of the elastic clamp 4.

[0031] The operating principle of the present invention is now described as follows:

[0032] The workpiece is placed in the elastic chuck 4, and the air source is supplied to the clamping cylinder 2. The piston rod extends to drive the push block 21 to move forward, and the transmission block 22 drives the first linkage plate 31 and the second linkage plate 11 to perform a linkage action. When the first linkage plate 31 and the second linkage plate 11 are in a straight line, the base 3 descends and drives the elastic chuck 4 to descend together. The neck 41 is contracted by the guide part 51, so that the spring clamp of the elastic chuck 4 contracts inward, clamping the workpiece tightly. Since the second linkage plate 11 provides strong support for the first linkage plate 31, and the transmission block 22 prevents the first linkage plate 31 and the second linkage plate 11 from bending due to external force, the base 3 is stably and firmly fixed in the position after the activity, effectively increasing the clamping force of the elastic chuck 4 to clamp the workpiece.

[0033] The above design solution can enable the product to achieve the advantage of stable clamping.

[0034] The above content is a further detailed description of the present invention in combination with specific implementation methods. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, they can make several simple deductions or substitutions without departing from the concept of the present invention, which should be regarded as falling within the scope of protection determined by the claims submitted for the present invention.

Claims

1. A stable clamping fixture, comprising a fixture frame (1), and a clamping cylinder (2) fixed to one side of the fixture frame (1), characterized in that: The clamp frame (1) is provided with a liftable base (3), the base (3) is provided with an elastic clamp (4), the elastic clamp (4) is provided with an inclined neck (41), the clamp frame (1) is provided with a guide sleeve (5) and is sleeved on the outer wall of the elastic clamp (4), the guide sleeve (5) is provided with an inclined guide portion (51) and abuts against the neck (41), a first linkage plate (31) is provided on both sides of the base (3), a second linkage plate (11) is provided on both sides of one end of the clamp frame (1) and abuts against one side of the first linkage plate (31), the piston rod of the clamping cylinder (2) is provided with a push block (21), and transmission blocks (22) are provided on both sides of the push block (21) and are hinged to the first linkage plate (31) and the second linkage plate (11).

2. The stable clamping fixture according to claim 1, characterized in that: The clamp frame (1) is provided with at least two guide columns (12) passing through the base (3); one end of the clamp frame (1) is provided with a through hole (13) for the guide sleeve (5) to pass through.

3. The stable clamping fixture according to claim 2, characterized in that: The base (3) is provided with a threaded column (32), and a clearance is left between the base (3) and the bottom of the clamp frame (1) for the base (3) to descend.

4. The stable clamping fixture according to claim 3, characterized in that: One end of the clamp frame (1) and the base (3) are provided with a through hole (6), which is arranged on both sides of the through hole (13) and the threaded column (32), and the side wall of the through hole (6) is provided with a connecting column (7).

5. The stable clamping fixture according to claim 4, characterized in that: The first linkage plate (31) and the second linkage plate (11) are arranged in the through hole (6), and one end of the first linkage plate (31) and the second linkage plate (11) are hinged to the connecting column (7).

6. The stable clamping fixture according to claim 3, characterized in that: The elastic clamp (4) is threadedly connected to the threaded cylinder (32).

7. The stable clamping fixture according to any one of claims 2 to 6, characterized in that: The guide sleeve (5) is provided with a stop portion (52) and abuts against the end surface of the clamp frame (1).

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