Repositioning connection device of positioning for flexibility and fastening for rigidity
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A technology of repeated positioning and flexible connection, used in positioning devices, clamping, supporting and other directions, can solve the problems of uneven wear of the center pin and the side of the groove, out of control of the machining accuracy of the workpiece, and high requirements for the installation of the combined device, and achieve the positioning accuracy. The effect of good retention, large horizontal torque and high positioning accuracy
Active Publication Date: 2008-12-10
上海麦迅机床工具技术有限公司
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Problems solved by technology
The problem with this connecting device is that it can only be positioned in one direction in the X or Y directions. If simultaneous positioning in the X and Y directions is required, two or more connecting devices must be combined and used together, and the combined device High installation requirements
Therefore, when the workpiece pallet is connected with the chuck for positioning, the center pin on the chuck only contacts with a single side of the corresponding groove, and there is a gap between the center pin and the other side, so only one of the eight sides of the four grooves Four fit, this kind of positioning belongs to rigid positioning, which will lead to uncertain positioning
In addition, the friction between the center pin and the side of the groove that fits it is extremely high, which will cause uneven wear of the center pin and the side of the groove during use, and ultimately affect the accuracy of positioning, making the device unsuitable for precise repetition. Positioning means
[0005] In summary, the disadvantage of the existing connection device is that its rigid support is realized on the flexible extrusion deformation of one of the chuck and the workpiece support plate, and under the action of heavy cutting force, the flexible extrusion deformation will produce vibration and trembling , so that the machining accuracy of the workpiece on the workpiece pallet is out of control
Method used
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Embodiment 1
[0053] An elastic deformation rigid clamping and repeated positioning flexible connection device is composed of a chuck, a workpiece support plate and a pull nail. The chuck includes a chuck base 1, four positioning teeth 6, 7, 8, 9, and four Z-direction stops There are 2, 3, 4, 5 and three to eight bolt holes on the moving plane, and the chuck base 1 includes a rivet hole, the chuck base 1 is cylindrical, the rivet hole is a round hole, and the rivet hole is located In the central part of the top surface, the central axis of the nail hole coincides with the central axis of the chuck base 1, and the four positioning teeth 6, 7, 8, and 9 are the first positioning tooth 6, the second positioning tooth 7, and the third positioning tooth 8 and the fourth positioning tooth 9, the four positioning teeth 6, 7, 8, 9 are arranged radially on the circumference of the top surface of the chuck base 1, and there are radial gaps between adjacent positioning teeth. There are four Z-direction...
Embodiment 2
[0055] Except following difference, all the other parts are identical with embodiment 1, and it is characterized in that, have escape groove 19 ', 20 ', 21 ', 22 ' on the bottom surface of four through grooves 23,24,25,26.
Embodiment 3
[0057] Except for the following differences, the remaining parts are exactly the same as in Embodiment 1. It is characterized in that the inclined surfaces on both sides of the four positioning teeth 6, 7, 8, 9 of the chuck and the four Z-direction stop surfaces 2, 3, 4, 5 has cleaning air holes 31a, 31b, 31c, 31d.
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Abstract
The invention relates to a connecting device for flexible positioning, rigid clamping and repeated positioning, which belongs to the technical field of the positioning and clamping between a machine tool and work pieces in the precision machinery manufacturing. The device consists of a chuck, a work piece supporting plate and drawn nails; the chuck is provided with four positioning teeth arrayed on the circumference of the top surface of the chuck evenly along the vertical direction; four Z directional stopping surfaces are arranged between the adjacent positioning teeth along the vertical direction; the work piece supporting plate is provided with a lug boss, through grooves and blind grooves; four through grooves are arrayed on the circumference of the top surface of the work piece supporting plate evenly along the vertical direction to divide the lug boss into four parts; the blind grooves are arranged at two sides of each through groove, and thin walls are arranged between the through grooves and the blind grooves; when in use, the four positioning teeth and the four through grooves are spliced together, and the four top surfaces of the lug boss are clung to the four Z directional stopping surfaces; the walls of the bind grooves can be deformed flexibly to lead the work pieces fixed on the work piece support plate to obtain the flexible positioning and the rigid clamping of the X direction, the Y direction and the Z direction. The connecting device for the flexible positioning, the rigid clamping and the repeated positioning has the advantages of high positioning precision, good repeated positioning, little contact surface wearing and strong tolerance capacity of the heavy cutting force.
Description
technical field [0001] The invention relates to a flexible positioning rigid clamping repeated positioning connection device, which belongs to the technical field of positioning and clamping between machine tools and workpieces in precision machinery manufacturing. Background technique [0002] The connection device is most commonly used to clamp a connection with one or more workpieces. The workpiece is located at a precise position in the machining area of the machine tool. The connection with the workpiece is the carrier or pallet of the workpiece. Chuck. [0003] Chinese patent CN1443620A discloses a connecting device. The device includes a chuck and a detachable workpiece holder clamp connected to the chuck. The workpiece holder with the clamping pin is fixed in the fixture of the chuck, the chuck is provided with a central hole and a clamping mechanism, the former is used to accommodate the clamping pin, and the latter firmly holds the clamping pin in the central h...
Claims
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Application Information
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