CN209774048U - Clamp for hole machining of irregular thin-wall cavity part - Google Patents
Clamp for hole machining of irregular thin-wall cavity part Download PDFInfo
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- CN209774048U CN209774048U CN201920464814.9U CN201920464814U CN209774048U CN 209774048 U CN209774048 U CN 209774048U CN 201920464814 U CN201920464814 U CN 201920464814U CN 209774048 U CN209774048 U CN 209774048U
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Abstract
The utility model relates to an anchor clamps that is used for spot facing work of irregular thin wall cavity part. The clamp comprises a clamp body, a top pressing component, a support nail and a middle pressing component, wherein a workpiece is arranged in a cavity of the clamp body; the top pressing component is arranged at the top of the clamp body and is abutted against the upper end face of the workpiece; the cylindrical surface of the clamp body is uniformly provided with through holes, and the middle pressing assembly is abutted against the side surface of the workpiece after penetrating through the through holes; the base of the clamp body is provided with a support nail, and a nut of the support nail is abutted to the bottom of the workpiece. The utility model relates to an anchor clamps that is used for spot facing work of irregular thin wall cavity part, its bottom have the support nail of adjustable work piece height, and the middle part has the middle part that makes work piece centering location and compresses tightly the subassembly, and the top has the top that makes work piece axial locking and compresses tightly the subassembly, can stabilize the deformation in effectual control hole, guarantees aperture size tolerance and geometric tolerances, and application scope is wide, has guaranteed part quality in the use.
Description
Technical Field
The utility model relates to an anchor clamps that is used for spot facing work of irregular thin wall cavity part requires high or spot facing work yielding thin wall cavity class part to the aperture tolerance. Belongs to the technical field of machinery.
Background
When high-precision thin-wall cavity parts (such as water jackets, shaft sleeves and the like) are machined, due to the fact that the cutting amount is large, the wall of a workpiece is thin, the rigidity is low, the drawing requires high precision of the size, the shape and the position in a hole, and the main problem needing to be solved in the machining process is to control and reduce the deformation of the parts. If the clamping mode has a problem, the machining deformation of a part hole can be caused, the size of the hole is ultra-poor due to stress release, moreover, due to the irregularity of the appearance of the part, the rule for deformation is difficult to find, the deformation amount cannot be controlled, although the heat treatment is carried out after rough machining to remove stress, the size ultra-poor caused by the deformation of a finish machining hole cannot be avoided, and therefore the problems of low qualification rate, long period and high cost exist in the machining of similar products all the time.
The Chinese invention patent (application number: 201811519905.4) discloses an annular thin-wall part clamp and a method for processing the thin-wall outer surface of the part, which comprises a cylindrical clamp support, wherein the outer side of the upper end surface of the cylindrical clamp support is provided with L-shaped symmetrical steps which are not higher than the upper end surface of the cylindrical clamp support along a circle of the circumference, and the annular thin-wall part is arranged on the steps; the limiting blocks are uniformly distributed on the circumference and fixedly arranged on the clamp support, one end of each limiting block is arranged on the upper end face of the clamp support, and the side face of each limiting block is tightly attached to the inner annular face of the annular thin-walled part; the pressing blocks and the limiting blocks are fixedly arranged on the clamp support at uniform intervals, and one end of each pressing block presses the upper end face of the annular thin-wall part. The fixture support supports and limits the fixture support, the at least three limiting blocks further limit the fixture support, the at least three pressing blocks tightly press the annular thin-wall part to be fixedly clamped, the annular thin-wall part cannot deform when the outer surface of the thin wall is machined, and the machining quality and the machining efficiency of the annular thin-wall part are improved.
The above patent has the following problems: 1. because the wall thickness of the annular thin-wall part is thin, after rough machining, deformation is easy to occur, if the upper end surface and the lower end surface of the part are uneven, the lower end surface of the annular thin-wall part is directly placed on the step surface, the lower end surface of the annular thin-wall part is uneven, the annular thin-wall part cannot be attached to the step surface, and subsequent machining inevitably affects the precision, so the technical scheme of the patent cannot be applied to the annular thin-wall part for hole machining; 2. the above patent is only suitable for the annular thin-wall part with a lower height, because in the technical scheme of the above patent, the pressing plate and the limiting block only act on the lower part of the annular thin-wall part, if the annular thin-wall part is higher in height, the middle part and the upper part of the annular thin-wall part are not limited, and the middle section and the upper section of the annular thin-wall part can be greatly deformed.
Disclosure of Invention
An object of the utility model is to overcome above-mentioned not enough, provide an anchor clamps that is used for spot facing work of irregular thin wall cavity part.
The purpose of the utility model is realized like this:
The utility model provides a anchor clamps that is used for spot facing work of irregular thin wall cavity part which characterized in that: the clamp comprises a clamp body, a top pressing component, a support nail and a middle pressing component, wherein a workpiece is arranged in a cavity of the clamp body;
the top pressing assemblies are at least three and are arranged at the top of the clamp body, and the top pressing assemblies are abutted to the upper end face of the workpiece;
The cylindrical surface of the clamp body is uniformly provided with through holes, and the middle pressing assembly is abutted against the side surface of the workpiece after penetrating through the through holes;
At least three supporting nails are arranged on the base of the clamp body, and screw caps of the supporting nails are abutted against the bottom of the workpiece.
Furthermore, the middle pressing assembly comprises a side pressing screw and a spring, a screw rod of the side pressing screw penetrates through the through hole, the end of the screw rod of the side pressing screw abuts against the side face of the workpiece, the spring is sleeved on the screw rod of the side pressing screw, one end of the spring abuts against the outer wall face of the clamp body, and the other end of the spring abuts against a screw cap of the side pressing screw.
Furthermore, an internal thread groove is formed in the base of the clamp body, and a screw rod of the support nail is matched with the internal thread groove.
Furthermore, the screw cap of the support nail is spherical.
Furthermore, the base of the clamp body is also provided with an adjusting groove for manually adjusting the supporting nail.
Furthermore, the top compressing assembly comprises a pressing plate, a supporting screw and a locking bolt, the outer end of the pressing plate is abutted to the upper end face of the workpiece, the supporting screw penetrates through the outer end of the pressing plate and is fixed to the top of the clamp body, the pressing plate can rotate around a screw rod of the supporting screw, the screw rod of the locking bolt penetrates through a middle opening of the pressing plate and is fixed to the top of the clamp body, and a nut of the locking bolt is abutted to the upper surface of the pressing plate.
Furthermore, the outer end of the pressing plate extends out of the upper edge of the inner wall of the clamp body, and the lower surface of the outer end of the pressing plate is provided with a salient point which is in contact with the upper end surface of the workpiece.
Furthermore, an elastic washer is arranged between a nut of the locking bolt and the pressure plate.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model relates to an anchor clamps that is used for spot facing work of irregular thin wall cavity part, its bottom has the support nail of adjustable work piece height, and the middle part has the middle part that makes work piece centering location and compresses tightly the subassembly, and the top has the top that makes work piece axial locking and compresses tightly the subassembly, can stabilize the deformation in effectual control hole, guarantees aperture size tolerance and form and position tolerance, and application scope is wide, and easy operation has guaranteed the part quality in the use, reduces the rejection rate, the cost is reduced.
Drawings
Fig. 1 is a perspective view of the utility model discloses a hole-machining fixture for irregular thin-walled cavity part.
Fig. 2 is a front view of fig. 1.
fig. 3 is a partially enlarged view of fig. 1.
Figure 4 is an enlarged view of a portion of the top hold down assembly of figure 2.
Fig. 5 is a partially enlarged view of the support pin of fig. 2.
Fig. 6 is a schematic view of a workpiece placed in the present invention.
in the figure:
The clamp comprises a clamp body 1, a through hole 1.1, an internal thread groove 1.2, an adjusting groove 1.3, a top pressing component 2, a pressing plate 2.1, a supporting screw 2.2, a locking bolt 2.3, an elastic washer 2.4, a supporting nail 3, a middle pressing component 4, a side pressing screw 4.1, a spring 4.2 and a workpiece 5.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
referring to fig. 1-6, the utility model relates to an anchor clamps that is used for spot facing work of irregular thin wall cavity part, it includes that anchor clamps body 1, top compress tightly subassembly 2, support nail 3 and middle part compress tightly subassembly 4, and work piece 5 is irregular thin wall cavity part, and work piece 5 is arranged in anchor clamps body 1's cavity.
The top pressure components 2 has threely, evenly set up the top at anchor clamps body 1, top pressure components 2 includes clamp plate 2.1, supporting screw 2.2 and locking bolt 2.3, the outer end of clamp plate 2.1 offsets with the up end of work piece 5, supporting screw 2.2 passes the outer end after-fixing of clamp plate 2.1 at the top of anchor clamps body 1, clamp plate 2.1 can rotate around supporting screw 2.2's screw rod, locking bolt 2.3's screw rod passes behind clamp plate 2.1's the middle part trompil, the locking is at the top of anchor clamps body 1, locking bolt 2.3's nut offsets with clamp plate 2.1's upper surface, thereby fix clamp plate 2.1 at anchor clamps body 1 top.
The outer end of the pressing plate 2.1 extends out of the lower surface of the outer end of the pressing plate 2.1 on the upper edge of the inner wall of the clamp body 1, and salient points are arranged on the lower surface of the outer end of the pressing plate 2.1, are in contact with the upper end face of the workpiece 5 and are used for pressing the workpiece 5.
an elastic washer 2.4 is arranged between the nut of the locking bolt 2.3 and the pressure plate 2.1, and under the action of the elastic washer 2.4, abrasion generated when the nut of the locking bolt 2.3 is tightly pressed with the pressure plate 2.1 is reduced.
the cylindrical surface of the clamp body 1 is uniformly provided with through holes 1.1, the middle pressing component 4 comprises side pressing screws 4.1 and springs 4.2, screw rods of the side pressing screws 4.1 penetrate through the through holes 1.1, the end parts of the screw rods are abutted against the side surfaces of the workpieces 5, the springs 4.2 are sleeved on the screw rods of the side pressing screws 4.1, one ends of the springs 4.2 are abutted against the outer wall surface of the clamp body 1, and the other ends of the springs are abutted against screw caps of the side pressing screws 4.1.
The base of the clamp body 1 is provided with three internal thread grooves 1.2, the number of corresponding support nails 3 is three, the screw rods of the support nails 3 are matched with the internal thread grooves 1.2, and the screw caps of the support nails 3 are abutted against the bottom of the workpiece 5;
the screw cap of the support nail 3 is spherical.
the base of the clamp body 1 is also provided with an adjusting groove 1.3 for manually adjusting the supporting nail 3, and a worker can adjust the height of the supporting nail 3 in real time through the adjusting groove 1.3 by using tools such as a wrench and the like.
The working principle is as follows:
The utility model relates to a hole machining's anchor clamps for irregular thin wall cavity part, at first coarse adjusting support pin 3's height, put work piece 5 into the cavity of anchor clamps body 1, the lower terminal surface of work piece 5 offsets with support pin 3's bulb cap, the side pressure screw 4.1 of rotatory middle part pressure subassembly 4 for work piece 5 centering, spring 4.2 is used for limiting the size of regulating force, prevents that the side of work piece 5 from warping; the height of the supporting nail 3 is adjusted through the adjusting groove 1.3, the upper end face of the workpiece 5 is horizontal and is located at a proper position where the pressing plate 2.1 is pressed, the pressing plate 2.1 is rotated, the inner end of the pressing plate 2.1 is located above the upper end face of the workpiece 5, then the locking bolt 2.3 is screwed down, and the pressing plate 2.1 presses the upper end face of the workpiece 5.
And (3) performing hole machining on the clamped workpiece, and verifying on site that the deformation of the workpiece is controlled within a tolerance range, all dimensions completely meet the requirements of a drawing, and the production yield reaches over 95 percent.
In the above embodiments, the present invention has been described only by way of example, but various modifications may be made by those skilled in the art after reading the present patent application without departing from the spirit and scope of the invention.
Claims (8)
1. The utility model provides a spot facing work's anchor clamps for irregular thin wall cavity part which characterized in that: the clamp comprises a clamp body, a top pressing component, a support nail and a middle pressing component, wherein a workpiece is arranged in a cavity of the clamp body;
The top pressing assemblies are at least three and are arranged at the top of the clamp body, and the top pressing assemblies are abutted to the upper end face of the workpiece;
The cylindrical surface of the clamp body is uniformly provided with through holes, and the middle pressing assembly is abutted against the side surface of the workpiece after penetrating through the through holes;
At least three supporting nails are arranged on the base of the clamp body, and screw caps of the supporting nails are abutted against the bottom of the workpiece.
2. The fixture for hole machining of the irregular thin-walled cavity part as claimed in claim 1, wherein: the middle pressing assembly comprises a side pressing screw and a spring, a screw rod of the side pressing screw penetrates through the through hole, the end of the screw rod abuts against the side face of the workpiece, the spring is sleeved on the screw rod of the side pressing screw, one end of the spring abuts against the outer wall face of the clamp body, and the other end of the spring abuts against a screw cap of the side pressing screw.
3. The fixture for hole machining of the irregular thin-walled cavity part as claimed in claim 1, wherein: the base of the clamp body is provided with an internal thread groove, and a screw rod of the support nail is matched with the internal thread groove.
4. The fixture for hole machining of the irregular thin-walled cavity part as claimed in claim 1, wherein: the screw cap of the support nail is spherical.
5. The fixture for hole machining of the irregular thin-walled cavity part as claimed in claim 1, wherein: the base of the clamp body is also provided with an adjusting groove for manually adjusting the supporting nail.
6. The fixture for hole machining of the irregular thin-walled cavity part as claimed in claim 1, wherein: the top hold-down assembly comprises a pressing plate, a supporting screw and a locking bolt, the outer end of the pressing plate is abutted to the upper end face of a workpiece, the supporting screw penetrates through the outer end of the pressing plate and is fixed to the top of the clamp body, the pressing plate can rotate around a screw rod of the supporting screw, the screw rod of the locking bolt penetrates through a middle opening of the pressing plate and is fixed to the top of the clamp body, and a nut of the locking bolt is abutted to the upper surface of the pressing plate.
7. The fixture for hole machining of the irregular thin-walled cavity part as claimed in claim 6, wherein: the outer end of the pressing plate extends out of the upper edge of the inner wall of the clamp body, the lower surface of the outer end of the pressing plate is provided with a salient point, and the salient point is in contact with the upper end surface of the workpiece.
8. The fixture for hole machining of the irregular thin-walled cavity part as claimed in claim 6, wherein: an elastic washer is arranged between the nut of the locking bolt and the pressure plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920464814.9U CN209774048U (en) | 2019-04-08 | 2019-04-08 | Clamp for hole machining of irregular thin-wall cavity part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920464814.9U CN209774048U (en) | 2019-04-08 | 2019-04-08 | Clamp for hole machining of irregular thin-wall cavity part |
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| Publication Number | Publication Date |
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| CN209774048U true CN209774048U (en) | 2019-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920464814.9U Active CN209774048U (en) | 2019-04-08 | 2019-04-08 | Clamp for hole machining of irregular thin-wall cavity part |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109822371A (en) * | 2019-04-08 | 2019-05-31 | 昆山江锦机械有限公司 | The fixture of hole machined for irregular thin walled cavity part |
| CN111015301A (en) * | 2019-12-31 | 2020-04-17 | 有研亿金新材料有限公司 | Machining method for mounting hole position and opening area of sputtering ring piece |
| CN111299615A (en) * | 2020-03-20 | 2020-06-19 | 中国航发哈尔滨东安发动机有限公司 | Machining method for aviation thin-wall part based on machine-clamp integrated clamping |
-
2019
- 2019-04-08 CN CN201920464814.9U patent/CN209774048U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109822371A (en) * | 2019-04-08 | 2019-05-31 | 昆山江锦机械有限公司 | The fixture of hole machined for irregular thin walled cavity part |
| CN111015301A (en) * | 2019-12-31 | 2020-04-17 | 有研亿金新材料有限公司 | Machining method for mounting hole position and opening area of sputtering ring piece |
| CN111299615A (en) * | 2020-03-20 | 2020-06-19 | 中国航发哈尔滨东安发动机有限公司 | Machining method for aviation thin-wall part based on machine-clamp integrated clamping |
| CN111299615B (en) * | 2020-03-20 | 2021-09-10 | 中国航发哈尔滨东安发动机有限公司 | Machining method for aviation thin-wall part based on machine-clamp integrated clamping |
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