Tool clamp

Abstract

The utility model discloses a frock clamp, including work bench, locating post, support seat, fixing mechanism, locating post is provided in the center of work bench, locating post is used for locating and fixing work piece to be processed, the support seat and the fixing mechanism are provided on the upper surface of work bench, the support seat is provided with a plurality of groups, the support seat is provided with a plurality of groups, and the fixing mechanism is provided with a plurality of groups. The supporting seats are circumferentially distributed along the surface of the workbench, the fixing mechanisms are circumferentially distributed along the surface of the workbench, the center of a workpiece is positioned and fixed through the positioning column, and the edge of the workpiece extends to the supporting seats and the fixing mechanisms. The center of the workpiece is axially positioned by the positioning column, and the positioning column is matched with the circumferentially distributed supporting seats to form a point-surface composite supporting structure, so that radial deviation or buckling deformation of the workpiece in the machining process is effectively prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of machining, concretely is a tool fixture. BACKGROUND

[0002] In the field of machining, tool fixture as the key equipment of guaranteeing machining precision and efficiency, its design rationality directly influences workpiece's clamping stability, machining quality and operation convenience, and the traditional tool fixture often has the following technical defects when coping with complex shape or large size workpiece:

[0003] Traditional fixture adopts single supporting point or simple clamping structure, and it is difficult to realize the accurate positioning of the workpiece, especially for the center-symmetrical workpiece such as annular and disc, and the inclination or vibration is easy to appear, which leads to machining error.

[0004] The existing clamping mechanism adopts manual screw rod or fixed pressing plate, and the adjusting range is limited, and it needs to be repeatedly loosened and tightened, so it is difficult to adapt to the rapid clamping demand of different size workpieces, and the machining efficiency is affected. TECHNICAL SOLUTION

[0005] The utility model discloses a tool fixture, which solves the above technical problems.

[0006] In order to solve the above technical problems, the utility model provides the following technical scheme:

[0007] The utility model provides a tool fixture,

[0008] Including workbench, positioning column, support seat, fixed mechanism, the positioning column sets up at the center of the workbench, the positioning column is used to position and fix the workpiece to be machined, the support seat and the fixed mechanism are all arranged on the upper surface of the workbench, the support seat is arranged as several groups, and the several groups of support seats are distributed in a circle along the surface of the workbench, the fixed mechanism is arranged as several groups, and the several groups of fixed mechanisms are distributed in a circle along the surface of the workbench, the center of the workpiece is positioned and fixed by the positioning column, and the edge extends to the support seat and the fixed mechanism, the support seat is used to support and fix the lower surface of the workpiece, and the fixed mechanism is used to clamp and fix the upper surface of the workpiece.

[0009] Optionally, the fixing mechanism comprises a first adjusting rod, a second adjusting rod, a fixing base, a compression nut and a compression block, the first adjusting rod and the fixing base are arranged on the two sides of the second adjusting rod respectively, and the first adjusting rod, the second adjusting rod and the fixing base are arranged along the same horizontal axis, the left and right ends of the compression block are both provided with through holes, the compression block is connected with the first adjusting rod and the second adjusting rod through the through holes at the two ends respectively, and the compression nut is arranged on the second adjusting rod.

[0010] Optionally, the lower surface of the compression block is provided with a protective layer, and the protective layer is used for protecting the surface of the workpiece.

[0011] Optionally, the workbench is provided with hoisting bolts, the hoisting bolts are arranged in groups, and the hoisting bolts in the groups are distributed in a circular manner on the surface of the workbench.

[0012] Optionally, the workbench is provided with mounting holes, the mounting holes are arranged in groups, the mounting holes in the groups are arranged at uniform intervals, and the workbench is fixedly connected with the operation platform through bolts through the mounting holes.

[0013] Optionally, the positioning column and the supporting base are fixedly connected with the workbench through bolts.

[0014] In summary, the utility model has the following beneficial effects:

[0015] The positioning column of the utility model performs axial positioning on the center of the workpiece, and forms a "point-surface" composite support structure in cooperation with the circumferentially distributed supporting base, so that radial deviation or warping deformation of the workpiece in the machining process is effectively prevented, the utility model is suitable for thin or easily deformed workpieces such as thin plates and annular parts, and ensures that the machining surface always remains in the same plane, the supporting base provides basic stability through the support of the lower surface, the fixing mechanism applies adjustable clamping force from top to bottom, forms a "sandwich" type fixation, can eliminate residual stress of the workpiece after clamping, avoids machining vibration caused by traditional single-sided clamping, and significantly improves the machining surface quality. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a top view of the utility model structure.

[0017] Fig. 2 It is a supporting base structure schematic view of the utility model.

[0018] Fig. 3 It is a fixing mechanism structure schematic view of the utility model.

[0019] Explanation of reference signs: 1 - workbench, 2 - positioning column, 3 - support seat, 4 - first adjusting rod, 5 - second adjusting rod, 6 - fixing seat, 7 - pressing nut, 8 - pressing block, 9 - hoisting bolt, 10 - mounting hole, 11 - bolt. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] Embodiment:

[0022] As shown in the figure, the utility model provides a tool fixture, Figs. 1-3

[0023] The positioning column 2 is arranged at the center of the workbench 1, and is used for positioning and fixing the workpiece to be processed. The support seat 3 and the fixing mechanism are both arranged on the upper surface of the workbench 1. The support seat 3 is arranged in several groups, and the several groups of support seats 3 are distributed in a circle along the surface of the workbench 1. The fixing mechanism is arranged in several groups, and the several groups of fixing mechanisms are distributed in a circle along the surface of the workbench 1. The center of the workpiece is positioned and fixed by the positioning column 2, and the edge thereof extends to the support seat 3 and the fixing mechanism. The support seat 3 is used for supporting and fixing the lower surface of the workpiece, and the fixing mechanism is used for clamping and fixing the upper surface of the workpiece.

[0024] The center positioning column 2 ensures accurate fixing of the geometric center of the workpiece. In cooperation with the circumferentially distributed support seat 3 and the fixing mechanism, a composite fixing system of "center point constraint + circumferential multi-point support" is formed, effectively solving the displacement problem of the circular / annular workpiece caused by its own deformation or vibration. The support seat 3 supports the lower surface in a plane to disperse the pressure and prevent local deformation. The fixing mechanism clamps the upper surface in a line to adjust the pressing force. This upper and lower cooperative fixing mode is suitable for the processing scene of thin-walled workpieces or easily deformed materials. The circumferentially distributed support / fixed units can be flexibly adjusted in position according to the diameter of the workpiece. By increasing or decreasing the number of support seats 3, different specifications of workpieces can be quickly replaced, improving the versatility of the fixture.

[0025] ​Optionally, the fixing mechanism comprises a first adjusting rod 4, a second adjusting rod 5, a fixing base 6, a pressing nut 7 and a pressing block 8, the first adjusting rod 4 and the fixing base 6 are arranged on the two sides of the second adjusting rod 5 respectively, and the first adjusting rod 4, the second adjusting rod 5 and the fixing base 6 are arranged along the same horizontal axis, through holes are formed in the left and right ends of the pressing block 8, the pressing block 8 is connected with the first adjusting rod 4 and the second adjusting rod 5 through the through holes in the two ends respectively, and the pressing nut 7 is arranged on the second adjusting rod 5, the pressing nut 7 is rotated downward, thereby driving the pressing block 8 to move downward, and the upper surface of the workpiece is clamped and fixed.

[0026] The first adjusting rod 4 and the second adjusting rod 5 form a parallelogram structure, and the stable vertical movement of the pressing block 8 is realized through the screw transmission of the pressing nut 7, so that the deflection torque generated by single rod adjustment does not damage the edge of the workpiece.

[0027] Optionally, the lower surface of the pressing block 8 is provided with a protective layer, and the protective layer is used to protect the surface of the workpiece.

[0028] The protective layer can absorb the impact energy in the pressing process, and avoid the indentation caused by the direct contact between metals.

[0029] Optionally, the workbench 1 is provided with lifting bolts 9, the lifting bolts 9 are arranged in several groups, and the lifting bolts 9 in the several groups are distributed in a circular manner on the surface of the workbench 1.

[0030] Optionally, the workbench 1 is provided with mounting holes 10, the mounting holes 10 are arranged in several groups, the mounting holes 10 in the several groups are arranged at uniform intervals, and the workbench 1 is fixedly connected with the work platform through the mounting holes 10 by bolts.

[0031] Optionally, the positioning column 2 and the supporting seat 3 are fixedly connected with the workbench 1 by bolts 11.

[0032] The positioning column 2 of the application axially positions the center of the workpiece, cooperates with the circumferentially distributed supporting seat 3 to form a "point-plane" composite support structure, effectively prevents the workpiece from generating radial deviation or warping deformation in the machining process, is suitable for thin or easily deformed workpieces such as thin plates and ring-shaped parts, ensures that the machined surface always remains in the same plane, the supporting seat 3 provides basic stability through the lower surface support, the fixing mechanism applies adjustable clamping force from top to bottom, forms a "sandwich" type fixing, can eliminate the residual stress of the clamped workpiece, avoids the machining vibration caused by traditional single-sided clamping, and significantly improves the machining surface quality.

[0033] The above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can still be modified, or some technical features therein can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A tooling fixture, characterized in that, comprising a workbench, a positioning column, a support seat, a fixing mechanism, the positioning column is arranged at the center of the workbench, the positioning column is used to position and fix the workpiece to be processed, the support seat and the fixing mechanism are arranged on the upper surface of the workbench, the support seat is arranged in several groups, and several groups of the support seat are distributed in a circle along the surface of the workbench, the fixing mechanism is arranged in several groups, and several groups of the fixing mechanism are distributed in a circle along the surface of the workbench, the center of the workpiece is positioned and fixed by the positioning column, and the edge extends to the support seat and the fixing mechanism, the support seat is used to support and fix the lower surface of the workpiece, and the fixing mechanism is used to clamp and fix the upper surface of the workpiece.

2. The tooling fixture according to claim 1, characterized in that, the fixing mechanism comprises a first adjusting rod, a second adjusting rod, a fixing seat, a compression nut, and a compression block, the first adjusting rod and the fixing seat are arranged on the left and right sides of the second adjusting rod respectively, and the first adjusting rod, the second adjusting rod, and the fixing seat are arranged along the same horizontal axis, through holes are formed in the left and right ends of the compression block, the compression block is connected with the first adjusting rod and the second adjusting rod through the through holes at the two ends respectively, and the compression nut is arranged on the second adjusting rod, and rotating the compression nut downward drives the compression block to move downward, thereby clamping and fixing the upper surface of the workpiece.

3. The tooling fixture according to claim 2, characterized in that, the lower surface of the compression block is provided with a protective layer, and the protective layer is used to protect the surface of the workpiece.

4. The tooling fixture according to claim 1, characterized in that, hoisting bolts are arranged on the workbench, the hoisting bolts are arranged in several groups, and several groups of the hoisting bolts are distributed in a circle along the surface of the workbench.

5. The tooling fixture according to claim 1, characterized in that, mounting holes are arranged on the workbench, the mounting holes are arranged in several groups, and the mounting holes are arranged at uniform intervals, and the workbench is fixedly connected with the work platform through the mounting holes and bolts.

6. The tooling fixture according to claim 1, characterized in that, the positioning column and the support seat are fixedly connected with the workbench through bolts.

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