CN117102526A - Chuck jaw for alignment clamping of special-shaped or eccentric workpiece - Google Patents
Chuck jaw for alignment clamping of special-shaped or eccentric workpiece Download PDFInfo
- Publication number
- CN117102526A CN117102526A CN202311093387.5A CN202311093387A CN117102526A CN 117102526 A CN117102526 A CN 117102526A CN 202311093387 A CN202311093387 A CN 202311093387A CN 117102526 A CN117102526 A CN 117102526A
- Authority
- CN
- China
- Prior art keywords
- chuck
- jaw
- clamping
- eccentric
- digital display
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 210000000078 claw Anatomy 0.000 claims description 39
- 239000000463 material Substances 0.000 claims description 2
- 238000005496 tempering Methods 0.000 claims 1
- 238000003825 pressing Methods 0.000 abstract description 17
- 238000003754 machining Methods 0.000 abstract description 7
- 238000012545 processing Methods 0.000 description 3
- 238000007670 refining Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/102—Jaws, accessories or adjustment means
Abstract
The invention discloses a chuck jaw for aligning and clamping a special-shaped or eccentric workpiece, which relates to the technical field of machining tool clamps, and comprises the following components: the clamping jaw, the positioning seat, the pre-tightening bolt, the pressing plate and the pressing plate connecting bolt are arranged in the trapezoidal block of the clamping jaw, the grating digital display device comprises a fixed grating, after the distance between the machining rotation center of the eccentric workpiece and the clamping point is calculated, the clamping jaw with the grating digital display device is adjusted according to data, then the clamping jaw is fixed, the self-centering of the hydraulic chuck opposite property and the eccentric workpiece can be realized, the grating digital display device is provided with a digital display function through the clamping jaw with the grating digital display device, the alignment precision can be improved, and the grating digital display device has the characteristics of high flexibility, high precision and the like aiming at different opposite property and eccentric workpieces, and the machining efficiency and quality of the opposite property and the eccentric workpiece are greatly improved.
Description
Technical Field
The invention relates to the technical field of machining tool clamps, in particular to a chuck jaw for aligning and clamping a special-shaped or eccentric workpiece.
Background
The chuck is mounted on a work spindle of a machine tool, which drives the chuck in rotation, achieving a high cutting power for cutting a workpiece, and the chuck reliably clamps the workpiece for feeding the workpiece to other machining devices or clamps a tool to enable machining of the workpiece. In most products such as pumps and valves, square parts with inner holes and outer circles in the center exist, the existing processing method is to scribe lines after the square shape is processed, then four chuck jaws are aligned on a four-jaw chuck lathe according to the scribed lines, four chuck jaws are required to be aligned repeatedly for several times one by one, the clamping time is long, alignment of the scribed lines can only be observed by naked eyes, and alignment accuracy is low. For large-batch workpieces with high precision, if special tools are adopted, the tools are required to be continuously replaced, and the cost and the efficiency are wasted.
The document (CN 206253668U) discloses a special three-jaw chuck for clamping square parts, which consists of a chuck body, movable jaws and a jaw driving mechanism, wherein threads are meshed with planar threads on the back surface of a bevel disk gear below three jaw guiding parts on the three-jaw chuck, when a wrench is used for rotating the bevel disk gear through a square hole, the bevel disk gear rotates, and the planar threads on the back surface simultaneously drive the three jaws to approach or withdraw towards the center for clamping workpieces with different diameters; three reverse claws are replaced at the positions of the three claws to be used for installing a workpiece with larger diameter; the method is characterized in that: the three claws comprise a flat claw 1, a left concave claw 2 and a right concave claw 3, the flat claw 1 is a three claw of a common three-claw chuck, the left concave claw 2 and the right concave claw 3 are symmetrical left and right, the front ends of the three claws are provided with grooves for clamping workpieces, the grooves are through grooves which are in the shape of isosceles right triangles, the symmetrical center line of the triangle coincides with the symmetrical center line of the claw body in the length direction, and a tool retracting groove is respectively arranged at the groove center point C of the left concave claw 2 and the groove center point D of the right concave claw 3; the included angle between the left concave claw 2 and the right concave claw 3 is 90 degrees, and the included angles between the left concave claw 2 and the right concave claw 3 and the flat head claw 1 are 135 degrees; the distance from the center point A of the workpiece 4 to the midpoint B of the jaw end of the flat jaw 1 is L1, the distance from the center point A of the workpiece 4 to the groove center point C of the left concave jaw 2 is L2, and the distance from the center point A of the workpiece 4 to the groove center point D of the right concave jaw 3 is L3. However, the special three-jaw chuck has low alignment precision on special-shaped eccentric shaft workpieces, and has the problems of difficult clamping adjustment, waste of cost and efficiency and the like.
Disclosure of Invention
Aiming at the problems in the prior art, the invention designs the chuck claw for aligning and clamping the special-shaped or eccentric workpiece, and the self-centering of the special-shaped and eccentric workpiece can be realized by adjusting the claw after calculating the distance between the machining rotation center of the eccentric workpiece and the clamping point, and the grating digital display device is arranged in the claw, so that the adjusting size of the claw can be accurately controlled, and the chuck claw has the characteristics of strong flexibility, high precision and the like.
The technical scheme adopted for realizing the invention is as follows: the chuck jaw for aligning and clamping a special-shaped or eccentric workpiece is characterized by comprising the following components: the clamping jaw 2.1, the positioning seat 2.2, the pre-tightening bolt 2.4, the pressing plate 2.5 and the pressing plate connecting bolt 2.6, wherein a trapezoidal block 2.1.1 is arranged on the side face of the clamping jaw 2.1, a movable grid is arranged in the trapezoidal block 2.1.1 of the clamping jaw 2.1, a left supporting block 2.2.1 and a right supporting block 2.2.4 are arranged on the positioning seat 2.2, a trapezoidal groove 2.2.3 is arranged on the inner side of the left supporting block 2.2.1, a grating digital display device 2.2.2 is arranged in the left supporting block 2.2.1, the trapezoidal block 2.1.1 of the clamping jaw 2.1 is matched and connected with the trapezoidal groove 2.2.3 on the inner side of the left supporting block 2.1, the pressing plate 2.5 is in threaded connection with the positioning seat 2.2 through the pressing plate connecting bolt 2.6, the pre-tightening bolt 2.4 is in threaded connection with the pressing plate 2.5, and the pre-tightening bolt 2.4 is in threaded connection with the pressing plate 2.1.
Further, the material of the clamping claw 2.1 is 40cr.
Further, 40cr of the claw 2.1 is subjected to thermal refining.
Further, the grating digital display device 2.2.2 comprises a fixed grating.
Further, the chuck jaw is applied to the chuck 1, and the chuck jaw is in threaded connection with the chuck 1.
Further, the chuck 1 is a three-jaw chuck or a four-jaw chuck.
Further, the chuck 1 is a hydraulic chuck.
The chuck jaw for aligning and clamping the special-shaped or eccentric workpiece has the beneficial technical effects that:
the chuck claw for aligning and clamping the special-shaped or eccentric workpiece is characterized in that a movable grating is arranged in a trapezoidal block of the claw, a fixed grating is arranged in the grating digital display device, after the distances between the processing rotation center of the eccentric workpiece and 4 clamping points are calculated, the claw with the grating digital display device is adjusted according to data, then the claw is fixed, the hydraulic chuck opposite property and the self-centering of the eccentric workpiece can be realized, the grating digital display device is provided with a digital display function through the claw with the grating digital display device, the alignment precision can be increased, the alignment time of a common four-claw chuck can be saved, the clamping mode adopts hydraulic clamping, and the repeated positioning precision is higher; the processing device has the characteristics of high flexibility, high precision and the like aiming at different types of different-type and eccentric workpieces, and greatly improves the processing efficiency and quality of the different-type and eccentric workpieces.
Drawings
FIG. 1 is an exploded view of a chuck jaw for use in alignment clamping of a profiled or eccentric workpiece;
FIG. 2 is a three-dimensional view of the part 2.2 of FIG. 1;
FIG. 3 is a three-dimensional view of a chuck jaw mounted on a four-jaw chuck for alignment clamping of a profiled or eccentric workpiece in an embodiment;
fig. 4 is a three-dimensional view of the workpiece 3 to be processed in the embodiment;
FIG. 5 is a three-dimensional view of a workpiece 3 being clamped using a four-jaw chuck with one type of chuck jaws for use in an alignment clamping of a profiled or eccentric workpiece in an embodiment;
in the figure: 1. the clamping device comprises a four-jaw chuck, 2 chuck jaws for aligning and clamping a special-shaped or eccentric workpiece, 2.1 jaws, 2.1.1 trapezoidal blocks, 2.2 positioning seats, 2.2.1 left supporting blocks, 2.2.2 grating digital display devices, 2.2.3 trapezoidal grooves, 2.2.4 right supporting blocks, 2.3 chuck jaw connecting bolts, 2.4 pre-tightening bolts, 2.5 pressing plates and 2.6 pressing plate connecting bolts.
Detailed Description
The present invention will be described in further detail below with reference to fig. 1 to 5 and the detailed description, and for the purpose of making the objects, technical solutions and advantages of the embodiments more clear, the technical solutions in the examples will be clearly and completely described with reference to the drawings in the examples, and the detailed description is only for explaining the present invention and not limiting the scope of the present invention.
As shown in fig. 1 and 2, a chuck jaw for aligning and clamping a profiled or eccentric workpiece, comprising: the clamping jaw 2.1, the positioning seat 2.2, the pre-tightening bolt 2.4, the pressing plate 2.5 and the pressing plate connecting bolt 2.6, wherein the clamping jaw 2.1 is made of 40cr, 40cr of the clamping jaw 2.1 is subjected to thermal refining, a trapezoidal block 2.1.1 is arranged on the side face of the clamping jaw 2.1, a movable grid is arranged in the trapezoidal block 2.1.1 of the clamping jaw 2.1, a left supporting block 2.2.1 and a right supporting block 2.2.4 are arranged on the positioning seat 2.2, a trapezoidal groove 2.2.3 is formed in the inner side of the left supporting block 2.2.1, a grating digital display device 2.2.2 is arranged in the left supporting block 2.2.1, the trapezoidal block 2.1.1 of the clamping jaw 2.1 is connected with the trapezoidal groove 2.2.3 on the inner side face of the left supporting block 2.1 in a matched mode, the pressing plate 2.5 is connected with the pressing plate connecting bolt 2.6 through the pressing plate connecting seat 2.2.5, and the pre-tightening bolt is connected with the pressing plate connecting bolt 2.4 through the side face of the pressing plate connecting bolt 2.5.
As shown in fig. 3, the chuck 1 is a four-jaw chuck, the chuck 1 is a hydraulic chuck, and four identical chuck jaws for aligning and clamping a special-shaped or eccentric workpiece are in threaded connection with the chuck 1 through chuck jaw connecting bolts 2.3. As shown in fig. 4, a three-dimensional view of the workpiece 3 to be machined, which is a square part with an inner bore and an outer circle in the center in most products such as pumps, valves, etc.
As shown in figure 5, firstly, the center position of an excircle and a hole to be machined of a workpiece 3 to be machined is determined, according to the calculation that the distance from the upper edge of the rotation center of the workpiece 3 to the upper edge is 80mm, the distances from the lower edge, the left edge and the right edge to the outer edge of the workpiece are 20 mm, 25mm and 25mm respectively, the distances from the 4 clamping positions relative to the outer periphery of the workpiece are determined, after the distances are determined, a pre-tightening bolt 2.4 is loosened, a claw 2.1 is slid, the claw 2.1 is adjusted according to the predetermined distances, the value on the positioning plate 2.2 is displayed due to the relative sliding of a movable grid in the claw 2.1 and a movable grid in the positioning plate 2.2, after the value on the positioning plate 2.2 is adjusted to be the pre-calculated value, the clamping space is reserved, the workpiece 3 is clamped in the claw 2.1 when the digital display value is 80.5, and at this time, the rotation center of the hydraulic chuck 1 is the rotation center of the workpiece 3 to be machined
The foregoing is merely a preferred embodiment of the invention, and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the invention, which are intended to be comprehended within the scope of the invention.
Claims (7)
1. The chuck jaw for aligning and clamping a special-shaped or eccentric workpiece is characterized by comprising the following components: claw (2.1), positioning seat (2.2), pretension bolt (2.4), clamp plate (2.5) and clamp plate connecting bolt (2.6) the side of claw (2.1) sets up trapezoidal piece (2.1.1) set up movable grid in trapezoidal piece (2.1.1) of claw (2.1) set up left supporting shoe (2.2.1) and right supporting shoe (2.2.4) on positioning seat (2.2) the inboard of left supporting shoe (2.2.1) sets up trapezoidal channel (2.2.3) set up grating digital display device (2.2.2) in left supporting shoe (2.2.1), trapezoidal piece (2.1.1) of claw (2.1) and the inboard trapezoidal channel (2.2.3) of left supporting shoe cooperate to be connected clamp plate (2.5) pass through clamp plate connecting bolt (2.6) and positioning seat (2.2) screw thread connection clamp plate (2.2.2.2.1) side of pretension bolt (2.4) screw thread connection bolt (2.4).
2. Chuck jaw for alignment clamping of profiled or eccentric workpieces according to claim 1, characterized in that the jaw (2.1) is of material 40cr.
3. Chuck jaw for alignment clamping of profiled or eccentric workpieces according to claim 2, characterized in that the jaw (2.1) is subjected to a 40cr tempering.
4. The chuck jaw for aligning and clamping a special-shaped or eccentric workpiece according to claim 1, wherein the grating digital display device (2.2.2) comprises a fixed grating.
5. A chuck jaw for use in alignment clamping of profiled or eccentric workpieces as claimed in claim 1, 2, 3 or 4, wherein said chuck jaw is applied to a chuck (1), said chuck jaw being threadedly connected to the chuck (1).
6. The chuck jaw for aligning and clamping of a profiled or eccentric workpiece according to claim 5, characterized in that the chuck (1) is a three jaw chuck or a four jaw chuck.
7. The chuck jaw for aligning and clamping of a profiled or eccentric workpiece according to claim 5, characterized in that the chuck (1) is a hydraulic chuck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311093387.5A CN117102526A (en) | 2023-08-29 | 2023-08-29 | Chuck jaw for alignment clamping of special-shaped or eccentric workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311093387.5A CN117102526A (en) | 2023-08-29 | 2023-08-29 | Chuck jaw for alignment clamping of special-shaped or eccentric workpiece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117102526A true CN117102526A (en) | 2023-11-24 |
Family
ID=88797986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311093387.5A Pending CN117102526A (en) | 2023-08-29 | 2023-08-29 | Chuck jaw for alignment clamping of special-shaped or eccentric workpiece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117102526A (en) |
-
2023
- 2023-08-29 CN CN202311093387.5A patent/CN117102526A/en active Pending
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