Straightening tool

Abstract

The invention relates to a straightening tool which comprises a fixing and supporting mechanism used for fixing and supporting a workpiece; the walking straightening mechanism comprises at least two limiting supporting mechanisms, a straightening frame and a pressing assembly, the limiting supporting mechanisms are symmetrically or approximately symmetrically arranged on the two sides of the straightening frame, and the limiting supporting mechanisms are used for supporting workpieces; the pressing assembly is arranged on the straightening frame in a lifting manner and is used for clamping a workpiece and applying pressure up and down; the walking straightening mechanism is movably arranged relative to the fixed supporting mechanism; the positioning piece is arranged on the fixed supporting mechanism and used for positioning the axis of the workpiece. The two sides of the pressing stress part of the workpiece are supported in an auxiliary mode through the two limiting supporting mechanisms, and the workpiece is pressed up and down through the pressing assembly, so that secondary bending caused by single-side pressing is avoided. The whole walking straightening mechanism is movably arranged relative to the fixed supporting mechanism, continuous straightening of all point positions of a workpiece after one-time clamping is achieved, and benchmark loss and operation errors caused by multiple times of straightening and repeated clamping are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical manufacturing, in particular to a straightening tool. Background Art

[0002] During the machining of shaft parts, straightening is necessary to meet the required machining accuracy. Common straightening methods involve applying external force to the bent portion through hydraulic or mechanical pressure. However, this approach is only suitable for simple shaft parts that bend in a single direction. For shaft parts that bend in multiple directions, multiple inspections and adjustments are required to complete straightening. This approach is inefficient and cannot achieve continuous straightening. Summary of the Invention

[0003] Based on this, it is necessary to provide a straightening tool with a compact structure, efficient operation and high straightening accuracy to address the problem of low efficiency in the straightening process of shaft parts bent in multiple directions.

[0004] The present invention provides a straightening tool, comprising:

[0005] A fixed support mechanism, used for fixedly supporting the workpiece;

[0006] The walking straightening mechanism includes at least two limit support mechanisms, a straightening frame, and a clamping assembly. The limit support mechanisms are symmetrically or nearly symmetrically arranged on both sides of the straightening frame, and the limit support mechanisms are used to support the workpiece; the clamping assembly can be raised and lowered on the straightening frame, and the clamping assembly is used to clamp the workpiece and apply pressure up and down; the walking straightening mechanism is movably arranged relative to the fixed support mechanism;

[0007] The positioning member is arranged on the fixed support mechanism and is used to position the axis of the workpiece.

[0008] In one embodiment, both sides of the straightening frame are through-holes for allowing the workpiece to pass through; the clamping assembly includes an upper clamping member and a lower clamping member, and the upper clamping member and the lower clamping member are respectively arranged at the top and bottom of the straightening frame in a liftable manner.

[0009] In one embodiment, the upper clamping member and the lower clamping member are both provided with an operating rod, a transmission rod connected to the operating rod and passing through the straightening frame, and a clamping portion connected to the transmission rod, and the clamping portions of the upper clamping member and the lower clamping member are arranged relative to each other.

[0010] In one embodiment, the walking straightening mechanism further includes a measuring table, which is arranged on the straightening frame and is used to measure the curvature of the workpiece.

[0011] In one embodiment, the walking straightening mechanism further includes a walking platform and a guide rail, the position limiting support mechanism and the straightening frame are both connected to the walking platform, and the walking platform is slidably connected to the guide rail.

[0012] In one embodiment, the walking straightening mechanism further includes walking wheels, and the walking platform and the guide rail are slidingly connected via the walking wheels.

[0013] In one embodiment, there are two fixed support mechanisms, and the two fixed support impact mechanisms are arranged on both sides of the walking straightening mechanism; the fixed support mechanism includes a support seat, two support wheels and a support shaft, and the support seat is provided with two oppositely arranged connecting parts, and the two support wheels are connected to the connecting parts of the support seat through the support shaft, and the two support wheels abut against each other.

[0014] In one embodiment, the position limiting support mechanism is provided with a V-shaped support surface for contacting the workpiece.

[0015] The above-mentioned straightening fixture fixes and supports the shaft to be straightened by a fixed support mechanism, and positions the axis of the workpiece by a positioning member to ensure that the contact position of the workpiece with the fixed support mechanism and the limit support mechanism is at the same height. The two limit support mechanisms are used to auxiliary support both sides of the compressed stress part of the workpiece to make the stress distribution uniform. The workpiece is pressurized evenly by the clamping assembly, and the force is applied evenly, which can avoid secondary bending caused by unilateral pressure. By making the entire walking straightening mechanism movably arranged relative to the fixed support mechanism, continuous straightening of all points of the workpiece after one clamping is achieved, avoiding the loss of reference and operational errors caused by multiple straightening and repeated clamping, and improving the straightening accuracy and process efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A structural diagram of a straightening tool in an embodiment from a first perspective;

[0017] Figure 2 This is a structural diagram of a straightening tool in an embodiment from a second perspective.

[0018] Description of labels:

[0019] 1. Fixed support mechanism; 2. Travel straightening mechanism; 3. Positioning member; A. Workpiece;

[0020] 11. Support seat; 12. Support wheel;

[0021] 21. Limit support mechanism; 22. Straightening frame; 23. Upper clamping member; 24. Lower clamping member; 25. Traveling wheel; 26. Traveling platform; 27. Guide rail. DETAILED DESCRIPTION

[0022] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0024] Furthermore, 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0025] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0026] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0027] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0028] See Figure 1-Figure 2 According to one embodiment of the present invention, a straightening fixture is provided, comprising a fixed support mechanism 1, a walking straightening mechanism 2 and a positioning member 3. The fixed support mechanism 1 is used to fixedly support a workpiece; the walking straightening mechanism 2 comprises at least two limiting support mechanisms 21, a straightening frame 22 and a clamping assembly. The limiting support mechanisms 21 are symmetrically or nearly symmetrically arranged on both sides of the straightening frame 22, and the limiting support mechanisms 21 are used to support the workpiece; the clamping assembly can be raised and lowered on the straightening frame 22, and the clamping assembly is used to clamp the workpiece and apply pressure up and down; the walking straightening mechanism 2 is movably arranged relative to the fixed support mechanism 1; the positioning member 3 is arranged on the fixed support mechanism 1 and is used to position the axis of the workpiece A. The straightening fixture fixedly supports the axis to be straightened by the fixed support mechanism 1, and positions the axis of the workpiece by the positioning member 3, ensuring that the contact positions of the workpiece with the fixed support mechanism 1 and the limiting support mechanism 21 are at the same height. The two limiting support mechanisms 21 are used to auxiliary support the two sides of the clamping force-bearing part of the workpiece to make the stress distribution uniform. The clamping assembly applies pressure to the workpiece, ensuring uniform force distribution and preventing secondary bending caused by unilateral pressure. By arranging the entire traveling straightening mechanism 2 in a movable manner relative to the fixed support mechanism 1, continuous straightening of all positions of the workpiece A is achieved after a single clamping operation. This avoids the loss of reference and operational errors caused by multiple straightening and repeated clamping operations, improves straightening accuracy and process efficiency, and is particularly suitable for one-time fine-tuning straightening of shaft parts.

[0029] Optionally, there are two fixed support mechanisms 1 and two positioning members 3, and the two positioning members 3 are respectively arranged on the two fixed support mechanisms 1. The positioning member 3 is provided with a center drill tip, and the center drill tip is inserted into the axial hole reserved in the workpiece to form a positioning and fixing constraint on the workpiece.

[0030] In one embodiment, the straightening frame 22 has two through-holes for the workpiece to pass through. The clamping assembly includes an upper clamping member 23 and a lower clamping member 24, which are respectively movably mounted at the top and bottom of the straightening frame 22. The symmetrical pressure design creates a bidirectional force, which uniformly applies pressure to the workpiece in both the upper and lower directions, effectively eliminating the eccentric bending moment caused by unidirectional pressure.

[0031] In one embodiment, the upper pressing member 23 and the lower pressing member 24 are each provided with an operating rod, a transmission rod connected to the operating rod and inserted into the straightening frame 22, and a clamping portion connected to the transmission rod, and the clamping portions of the upper pressing member 23 and the lower pressing member 24 are arranged opposite to each other. The transmission rod is driven by rotating the operating rod to achieve precise lifting and lowering adjustment of the clamping portion.

[0032] Optionally, the transmission rod is threadedly connected to the straightening frame 22. Alternatively, the transmission rod is a pneumatic rod or a hydraulic rod, which facilitates precise control of the lifting and lowering of the clamping part.

[0033] In one embodiment, the opposing surfaces of the clamping portions of the upper clamping member 23 and the lower clamping member 24 are both arcuate surfaces, which are used to contact the surface of the workpiece and enable self-centering. Optionally, the clamping portions of the upper clamping member 23 and the lower clamping member 24 are both provided with concave support blocks, which can form a self-centering clamp for the shaft.

[0034] In one embodiment, the walking straightening mechanism 2 further includes a measuring scale (not shown) mounted on the straightening frame 22 for measuring the curvature of the workpiece. By displaying the changing value of the workpiece curvature in real time, the operator can monitor the straightening amount during the pressure application process, thus avoiding over-straightening caused by traditional empirical straightening methods.

[0035] In one embodiment, the walking straightening mechanism 2 further includes a walking platform 26 and a guide rail 27 , the position limiting support mechanism 21 and the straightening frame 22 are both connected to the walking platform 26 , and the walking platform 26 is slidably connected to the guide rail 27 .

[0036] In one embodiment, the walking straightening mechanism 2 further includes walking wheels 25 , and the walking platform 26 and the guide rail 27 are slidingly connected via the walking wheels 25 .

[0037] Optionally, anti-overturning stabilizing wheels are further provided on both sides of the walking platform 26 to improve the overall stability of the walking straightening mechanism 2 .

[0038] In one embodiment, there are two fixed support mechanisms 1, and the two fixed support impact mechanisms are arranged on both sides of the walking straightening mechanism 2; the fixed support mechanism 1 includes a support seat 11, two support wheels 12 and a support shaft, and the support seat 11 is provided with two relatively arranged connecting parts, and the two support wheels 12 are connected to the connecting parts of the support seat 11 through the support shaft, and the two support wheels 12 abut against each other, and a support point is formed for the workpiece through the support wheel 12, which can adapt to the support requirements of workpieces of different diameters, and cooperate with the axial constraint of the positioning member 3 to form accurate and stable spatial positioning of the workpiece.

[0039] In one embodiment, the position limiting support mechanism 21 is provided with a V-shaped support surface for contacting the workpiece so that the workpiece is always automatically centered during the straightening process, thereby improving the straightening efficiency and accuracy.

[0040] The above-mentioned straightening fixture fixes and supports the axis to be straightened by the fixed support mechanism 1, and positions the axis of the workpiece by the positioning member 3, ensuring that the contact position of the workpiece with the fixed support mechanism 1 and the limit support mechanism 21 is at the same height. The two limit support mechanisms 21 are used to auxiliary support both sides of the compressed force-bearing part of the workpiece to make the stress distribution uniform. The workpiece is pressed up and down by the clamping assembly, and the force is evenly applied, which can avoid secondary bending caused by unilateral pressure. By making the entire walking straightening mechanism 2 movably arranged relative to the fixed support mechanism 1, continuous straightening of all positions of the workpiece after one clamping is achieved, thereby avoiding the loss of reference and operational errors caused by multiple straightening and repeated clamping, and improving the straightening accuracy and process efficiency.

[0041] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A straightening tool, characterized in that: The straightening tool comprises: A fixed support mechanism, used for fixedly supporting the workpiece; The walking straightening mechanism includes at least two limit support mechanisms, a straightening frame, and a clamping assembly. The limit support mechanisms are symmetrically or nearly symmetrically arranged on both sides of the straightening frame, and the limit support mechanisms are used to support the workpiece; the clamping assembly can be raised and lowered on the straightening frame, and the clamping assembly is used to clamp the workpiece and apply pressure up and down; the walking straightening mechanism is movably arranged relative to the fixed support mechanism; The positioning member is arranged on the fixed support mechanism and is used to position the axis of the workpiece.

2. The straightening fixture according to claim 1, characterized in that: Both sides of the straightening frame are through-through for allowing the workpiece to pass through; the clamping assembly comprises an upper clamping member and a lower clamping member, and the upper clamping member and the lower clamping member are respectively arranged on the top and bottom of the straightening frame in a liftable manner.

3. The straightening tool according to claim 2, characterized in that: The upper pressing member and the lower pressing member are both provided with an operating rod, a transmission rod connected to the operating rod and penetrating into the straightening frame, and a clamping portion connected to the transmission rod, and the clamping portions of the upper pressing member and the lower pressing member are arranged opposite to each other.

4. The straightening tool according to claim 1, characterized in that: The walking straightening mechanism further comprises a measuring table, which is arranged on the straightening frame and is used to measure the curvature of the workpiece.

5. The straightening tool according to claim 1, characterized in that: The walking straightening mechanism further comprises a walking platform and a guide rail. The position limiting support mechanism and the straightening frame are both connected to the walking platform. The walking platform is slidably connected to the guide rail.

6. The straightening fixture according to claim 5, characterized in that: The walking straightening mechanism further comprises walking wheels, and the walking platform is slidingly connected to the guide rail via the walking wheels.

7. The straightening fixture according to claim 1, characterized in that: There are two fixed support mechanisms, and the two fixed support impact mechanisms are arranged on both sides of the walking straightening mechanism; the fixed support mechanism includes a support seat, two support wheels and a support shaft, and the support seat is provided with two oppositely arranged connecting parts, and the two support wheels are connected to the connecting parts of the support seat through the support shaft, and the two support wheels abut against each other.

8. The straightening fixture according to claim 1, characterized in that: The position limiting support mechanism is provided with a V-shaped support surface for contacting the workpiece.

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