CN217493523U - Special jig for milling machine machining of high-precision thin-wall box - Google Patents
Special jig for milling machine machining of high-precision thin-wall box Download PDFInfo
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- CN217493523U CN217493523U CN202221725009.5U CN202221725009U CN217493523U CN 217493523 U CN217493523 U CN 217493523U CN 202221725009 U CN202221725009 U CN 202221725009U CN 217493523 U CN217493523 U CN 217493523U
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Abstract
The utility model relates to a special jig for milling machine processing of high-precision thin-wall box bodies, which comprises a jig body and a plurality of body positioning bolts arranged on the jig body, a plurality of fixing screw holes of the jig body are correspondingly arranged on one side of the body positioning bolts, a plurality of oil pressure cylinder bodies are arranged on the inner sides of the body positioning bolts, a first group of three positioning points are arranged on the inner sides of the oil pressure cylinder bodies, a second group of three positioning points are arranged between the adjacent three positioning points of the first group, a foolproof body is correspondingly arranged on one side of each of the second group of three positioning points, two auxiliary supporting cylinder body points are arranged on the outer side of the upper end face of the clamp body, and a dislocation-preventing auxiliary mechanism is arranged on one side of each of the two auxiliary supporting cylinder body points, so that the product is stably positioned, the efficiency is high, and the dimensional precision of the product can be ensured; the oil pressure floating supporting cylinder is added, the sequence of the oil pressure cylinders is set, and the stability of the workpiece is guaranteed.
Description
Technical Field
The utility model relates to an instrument for machining particularly, relates to a high accuracy thin wall type box milling machine processing special fixture.
Background
The design of the special fixture for machining the high-precision thin-wall box body milling machine is mainly the selection of a positioning reference and the consideration of the pressing stability. In the process of establishing a technological specification, whether the selection of the positioning reference is correct or not has great influence on the requirements on whether the dimensional accuracy and the mutual position accuracy of the parts can be ensured or not and the arrangement of the processing sequence among the surfaces of the parts, and when the clamp is used for installing the workpiece, the selection of the positioning reference also influences the complexity of the structure of the clamp. The pressing stability determines whether the box body can be deformed or not, thereby influencing the stability of the processing dimension.
When the positioning reference is selected, the requirement of ensuring the processing precision of the workpiece is taken as a starting point, so that the fine reference is selected firstly, and then the coarse reference is selected; when the accurate reference is selected, the machining precision and the convenience and reliability of workpiece installation are mainly considered to be ensured. The selection principle of the fine reference mainly follows: the method comprises a benchmark coincidence principle, a benchmark unification principle, a self-benchmark principle and a mutual benchmark principle.
In the case of selecting the pressing method, the pressing point must be compacted and there is no free point because of the prevention of deformation and loosening. In addition, in order to prevent vibration and deformation and properly increase auxiliary support, an oil pressure floating support cylinder is commonly used at present, the sequence of actions of all cylinder bodies during clamping is necessarily considered during the design of a clamp, the workpiece is prevented from moving or deforming after being stressed, and then the control is carried out through a sequence valve.
When designing the special fixture for machining the high-precision thin-wall box milling machine, firstly, the design reference on a product drawing is seen, the design reference is a fine reference, and in order to ensure that the machining precision of a product cannot be influenced due to the surface unevenness error of the positioning reference, a material surface formed by the same die surface is selected as the reference positioning, so that the part to be machined on the product, especially the dimension with higher requirement or the associated dimension, is ensured to be machined and finished under one-time clamping, thus the machining precision of the product cannot be influenced due to the error of repeated clamping, the reference uniformity of the associated dimension can be ensured, the unification of the reference can simplify the process planning work, the design, the manufacturing workload and the cost of the fixture are reduced, and the production preparation period is shortened; the mutual position accuracy of the processing surfaces is convenient to ensure due to the reduction of reference conversion.
The existing special fixture for milling machine machining of the high-precision thin-wall box body is used for processing irregular parts, the machining of variable parts cannot be met by the special fixture for milling machine machining which is supported only by traditional appearance clamping and planes, the positioning of a product in actual operation is not stable enough, and in the process of mass production, an operator is complicated to take and place the product, the working efficiency is low, the size precision of the product cannot be guaranteed, meanwhile, the product is easy to vibrate and deform in the clamping process, and therefore the problem needs to be solved by designing the special fixture for milling machine machining of the high-precision thin-wall box body.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a special anchor clamps of treating of high accuracy thin wall type box milling machine processing is provided, increases the unstable factor that the auxiliary stay cylinder body antidetonation can solve in production, in order to shorten the operation cycle time when guaranteeing the high accuracy, improves work efficiency.
In order to solve the technical problem, the utility model discloses a technical scheme is: a special jig for milling machine machining of a high-precision thin-walled box body comprises a jig body and a plurality of body positioning bolts arranged on the jig body, wherein one side of each body positioning bolt is correspondingly provided with a jig body fixing screw hole, the inner side of each body positioning bolt is provided with a plurality of oil pressure cylinder bodies, the inner side of each oil pressure cylinder body is provided with a first group of three positioning points, a second group of three positioning points are arranged between the adjacent first group of three positioning points, one side of each second group of three positioning points is correspondingly provided with a foolproof body, the foolproof body is used for assisting the three positioning points of the second group in performing error-proof clamping on parts, the outer side of the upper end face of the jig body is provided with two auxiliary supporting cylinder body points, one side of each two auxiliary supporting cylinder body points is provided with an error-proof auxiliary mechanism, the dislocation-preventing auxiliary mechanism comprises a manual push rod and an elastic push rod.
The utility model discloses a further improvement lies in: the first group of three positioning points comprises a first positioning point, a second positioning point and a third positioning point, and the first positioning point, the second positioning point and the third positioning point are positioned on the special fixture body and are distributed to form a triangular structure.
The utility model discloses a further improvement lies in: the three positioning points of the second group comprise a fifth positioning point, a sixth positioning point and a seventh positioning point.
The utility model discloses a further improvement lies in: the first pressing and holding point is arranged above the first positioning point, the second pressing and holding point is arranged above the second positioning point, the third pressing and holding point is arranged above the third positioning point, and the fourth pressing and holding point is arranged above the fourth positioning point.
The utility model discloses a further improvement lies in: the first pressing point, the second pressing point, the third pressing point and the fourth pressing point are respectively and correspondingly arranged above the oil pressure cylinder body.
The utility model discloses a further improvement lies in: one side of the hydraulic cylinder body is provided with an anti-seismic auxiliary supporting point.
The utility model has the advantages that:
1. the utility model discloses an in the structure, the selection of location reference surface is the first 3 locating points of a set of and the spacing 3 locating pieces of second group horizontal direction on the same die face of product, three locating points are with supporting the locating surface, the rotation of restriction X, Y direction and the removal of Z direction, three locating piece is with the three reference surface with on the product, fix a position with the fixed block, the removal of restriction X, Y direction and the rotation of Z direction, adopt simultaneously and prevent slow-witted device and ensure the clamping direction and the position of product, thus, six degrees of freedom of product all can be restricted, the product location is stable, and in the bulk production process, the operator gets, it is all very convenient to put the product, efficiency can be very high, product size precision also can guarantee simultaneously.
2. In order to prevent vibration and deformation, an oil pressure floating supporting cylinder is added, the sequence of the oil pressure cylinders is set, and the stability of a workpiece is guaranteed.
Drawings
Fig. 1 is a top view of the clamping fixture of the present invention. (containing the parts)
Fig. 2 is a top view of the clamping fixture of the present invention. (containing no parts and hiding pressure holding points)
Fig. 3 is a perspective view of the clamping apparatus of the present invention.
In the figure: 2 and 3 body location bolt, 1, 4, 5, 6 are fixture body fixed screw hole, 18, 19, 20, 21 are hydraulic cylinder body, the first group 10, 11, 12 are the strong point, the second group 7, 8, 9 are the anchor point, 22, 23, 24 are the foolproof body, 25 are first pressure holding point, 26 is the second pressure holding point, 27 is the third pressure holding point, 16, 17 are the auxiliary support cylinder body point, 13 is the antidetonation auxiliary support point, 14, 15 dislocation prevention auxiliary mechanism.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The embodiment of the utility model provides an in, anchor clamps are controlled in milling machine processing special use of high accuracy thin wall type box, and anchor clamps are controlled in high accuracy thin wall type box milling machine processing special use installs on the lathe: the first datum hole 2 and the second datum hole 3 in the jig are inserted into positioning pins, the special jig is placed in an equipment platform for positioning, and then the special jig is locked through four screw holes 1, 4, 5 and 6.
The special jig for milling machine machining of the high-precision thin-wall box body comprises a jig body and a plurality of body positioning bolts arranged on the jig body, wherein a plurality of fixing screw holes for the jig body are correspondingly formed in one sides of the body positioning bolts, four oil pressure cylinder bodies 18, 19, 20 and 21 are arranged on the inner sides of the body positioning bolts, a first group of three positioning points 10, 11 and 12 are arranged on the inner sides of the four oil pressure cylinder bodies 18, 19, 20 and 21, a second group of three positioning points 7, 8 and 9 are arranged between the adjacent first group of three positioning points, a fool- proof body 22, 23 and 24 is correspondingly arranged on one side of each of the second group of three positioning points 7, 8 and 9, the fool- proof body 22, 23 and 24 are used for assisting the second group of three positioning points 7, 8 and 9 in error-proofing clamping of parts, and an auxiliary supporting cylinder body point 16 is arranged on the outer side of the upper end face of the jig body, 17, one side of auxiliary stay cylinder body point 16, 17 is provided with dislocation prevention auxiliary mechanism, dislocation prevention auxiliary mechanism includes manual push rod 14 and elastic push rod 15, one side of hydraulic cylinder body 20 be equipped with antidetonation auxiliary stay point 13.
The first group of three positioning points comprise a first positioning point 10, a second positioning point 11 and a third positioning point 12, wherein the first positioning point 10, the second positioning point 11 and the third positioning point 12 are distributed on the special fixture body and then form a triangular structure; the three positioning points of the second group comprise a fifth positioning point 7, a sixth positioning point 8 and a seventh positioning point 9; the first pressing and holding point 25 is arranged above the first positioning point 10, the second pressing and holding point 26 is arranged above the second positioning point 11, the third pressing and holding point 27 is arranged above the third positioning point 12, and the fourth pressing and holding point 28 is arranged above the fourth positioning point 13; the first pressure point 25, the second pressure point 26, the third pressure point 27, and the fourth pressure point 28 are provided above the hydraulic cylinders 18, 19, 20, and 21, respectively.
The use method comprises the following steps:
firstly, a first group of 3 positioning points 10, 11 and 12 ensure that a workpiece is horizontally placed, and a second group of 3 positioning points 7, 8 and 9 limit rotation and movement of the workpiece in the horizontal direction;
secondly, arranging three points of a first positioning point 10, a second positioning point 11 and a third positioning point 12 in a triangular shape for supporting a first positioning surface of the part, then arranging three positioning references on the first positioning surface of the part in a triangular shape for fixing the part, and after the part is close to the positioning points, initially stabilizing the part by using the 14 and 15 anti-dislocation auxiliary mechanisms; starting 16 auxiliary supporting cylinder body points and 17 as anti-seismic auxiliary supporting points to assist in clamping the product so as to ensure the stable precision and anti-seismic property of the product in the processing process;
thirdly, under the action of the hydraulic cylinders 19, 20 and 21, the working principle of the hydraulic unit is used for clamping and loosening the product to perform processing operation;
finally, the supporting rod at the anti-seismic auxiliary supporting point 13 is lifted, stops and is locked after slightly leaning against the part, and the pressing plate 28 is lowered and clamped.
The working principle of the auxiliary supporting cylinder body points (16, 17) and the anti-seismic supporting point 13 is as follows:
after the pressing points 25, 26 and 27 finish the pressing work, the mechanisms of the supporting cylinder bodies 16 and 17 and the anti-vibration supporting point 13 start to work and advance, when the tip of the supporting point contacts the surface of the processed part, the supporting cylinder bodies stop advancing immediately, and then the push rods are automatically locked to prevent the workpiece from displacing in the processing process. In addition, the anti-vibration supporting points 13 have elastic functions, the pressing and holding functions are similar to those of a shock absorber of an automobile, and the vibration of a product caused by machining is eliminated in the machining process. The effect is more obvious especially to thin wall box.
Principle of anti-dislocation auxiliary mechanism (14, 15):
after the workpiece is mounted on the fixture, the mechanism has a thrust force in the direction of the workpiece side, which brings the workpiece into abutment with the second set of 3 positioning points (7, 8, 9). The workpiece is prevented from having slight position difference when being manually placed.
Fool-proof body (22, 23, 24) principle:
according to the design of the product appearance structure, the product is added with the easy block at the outline position, and the product is ensured to have only a unique clamping mode (if the product is not placed at the right position, or the product cannot be placed into the clamp to complete clamping).
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a special anchor clamps that are controlled in milling machine processing of high accuracy thin wall type box which characterized in that: including anchor clamps body and setting a plurality of body location bolt on the anchor clamps body, a plurality of one side of body location bolt all corresponds is provided with and treats anchor clamps body fixed screw hole, a plurality of the inboard of body location bolt is provided with a plurality of oil pressure cylinder body, and the inboard of a plurality of oil pressure cylinder body is provided with the three setpoint of first group, is provided with the three setpoint of second group between the adjacent three setpoint of first group, and the second is organized threely one side of setpoint all corresponds is provided with prevents slow-witted body, the anchor clamps body up end outside is equipped with two auxiliary stay cylinder body points, two one side of auxiliary stay cylinder body point is provided with the mistake proofing position complementary unit.
2. The special jig for milling machine processing of the high-precision thin-wall box body according to claim 1, which is characterized in that: the dislocation-preventing auxiliary mechanism comprises a manual push rod and an elastic push rod.
3. The special jig for milling machine processing of the high-precision thin-wall box body according to claim 1, which is characterized in that: the first group of three positioning points comprises a first positioning point, a second positioning point and a third positioning point, and the first positioning point, the second positioning point and the third positioning point are positioned on the special fixture body and are distributed to form a triangular structure.
4. The special jig for milling machine processing of the high-precision thin-wall box body according to claim 1, which is characterized in that: the three positioning points of the second group comprise a fifth positioning point, a sixth positioning point and a seventh positioning point.
5. The special jig for milling machine processing of the high-precision thin-wall box body according to claim 1, which is characterized in that: the first pressing and holding point is arranged above the first positioning point, the second pressing and holding point is arranged above the second positioning point, the third pressing and holding point is arranged above the third positioning point, and the fourth pressing and holding point is arranged above the fourth positioning point.
6. The special jig for milling machine processing of the high-precision thin-wall box body according to claim 5, characterized in that: the first pressing point, the second pressing point, the third pressing point and the fourth pressing point are respectively and correspondingly arranged above the oil pressure cylinder body.
7. The special jig for milling machine processing of the high-precision thin-wall box body according to claim 1, which is characterized in that: one side of the oil pressure cylinder body is provided with an anti-seismic auxiliary supporting point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221725009.5U CN217493523U (en) | 2022-07-06 | 2022-07-06 | Special jig for milling machine machining of high-precision thin-wall box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221725009.5U CN217493523U (en) | 2022-07-06 | 2022-07-06 | Special jig for milling machine machining of high-precision thin-wall box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217493523U true CN217493523U (en) | 2022-09-27 |
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ID=83341572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221725009.5U Active CN217493523U (en) | 2022-07-06 | 2022-07-06 | Special jig for milling machine machining of high-precision thin-wall box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217493523U (en) |
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2022
- 2022-07-06 CN CN202221725009.5U patent/CN217493523U/en active Active
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