CN221313924U - Clamping tool for machining inner hole of annular workpiece - Google Patents
Clamping tool for machining inner hole of annular workpiece Download PDFInfo
- Publication number
- CN221313924U CN221313924U CN202323066965.4U CN202323066965U CN221313924U CN 221313924 U CN221313924 U CN 221313924U CN 202323066965 U CN202323066965 U CN 202323066965U CN 221313924 U CN221313924 U CN 221313924U
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- tool
- annular workpiece
- supporting bottom
- casing
- chassis
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- 238000003754 machining Methods 0.000 title claims abstract description 32
- 238000003825 pressing Methods 0.000 claims abstract description 25
- 238000012545 processing Methods 0.000 claims description 9
- 238000005491 wire drawing Methods 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 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
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Abstract
The utility model discloses a clamping tool for machining an inner hole of an annular workpiece, which comprises a tool fixture and a tightening assembly, wherein the tightening assembly is used for being matched with the tool fixture to screw and fix the tool fixture, the tool fixture is used for clamping and fixing the annular workpiece, and the tool fixture comprises: the fixture comprises a fixture chassis, a plurality of supporting bottom rings are arranged on the upper surface of the fixture chassis and coaxial with the fixture chassis, the bottom surfaces of the supporting bottom rings are arranged in a stepped concave mode, the diameters of the supporting bottom rings are gradually reduced from outside to inside, an avoidance angle is arranged at the edge of the inner ring of the supporting bottom rings, a plurality of positioning holes are formed in the fixture chassis, bolt columns are detachably connected in the positioning holes, pressing plates are sleeved on the peripheries of the bolt columns in a sleeved mode, and fastening nuts are connected to one sides of the pressing plates in the peripheral threaded mode of the bolt columns. The utility model can avoid surface damage to the thin-wall annular workpiece when clamping the workpiece, and ensure the machining precision when machining the inner hole.
Description
Technical Field
The utility model relates to the technical field of clamping tools for machining, in particular to a clamping tool for machining an inner hole of an annular workpiece.
Background
In the turning part machining process, the inner hole machining of the thin-wall annular workpiece is indispensable, and in the prior art, the inner hole machining precision requirement on the thin-wall annular workpiece is high, so that the clamping stability requirement on the thin-wall annular workpiece is high, and once the clamping stability is insufficient, the machining requirement on the thin-wall annular workpiece cannot be directly met.
The existing thin-wall annular workpiece is usually clamped by a three-jaw chuck, when the three-jaw chuck clamps the thin-wall annular workpiece, inner hole machining is carried out, deformation exists on the clamping surface of the thin-wall annular workpiece when the workpiece is taken down after the inner hole machining of the thin-wall annular workpiece is finished, the three-jaw chuck is used for clamping the thin-wall annular workpiece, and when the inner hole machining is carried out, a cutter point of a machining cutter is easy to collide with the three-jaw chuck when the cutter point is turned to the tail end of the inner hole of the thin-wall annular workpiece, so that the cutter point is damaged. If the tip of the machining tool is damaged, when the three-jaw chuck clamps the thin-walled annular workpiece, one end of the thin-walled annular workpiece is not attached to the bottom surface of the three-jaw chuck, so that a space is reserved between the two ends of the thin-walled annular workpiece, but in order to improve the clamping stability of the thin-walled annular workpiece, the three-jaw chuck needs to use a larger clamping force, so that the clamping surface of the thin-walled annular workpiece is deformed more seriously, and the clamping manner can solve the problem that the axis of the thin-walled annular workpiece is not in the same axis as the axis of the three-jaw chuck, so that the inner hole machining precision of the thin-walled annular workpiece is reduced.
Disclosure of utility model
The utility model aims to provide a clamping tool for machining an inner hole of an annular workpiece, which is used for solving the problems that in the prior art, the clamping surface of the thin-wall annular workpiece deforms after the inner hole machining is finished, and the inner hole machining precision of the thin-wall annular workpiece cannot be guaranteed.
In order to achieve the above purpose, the embodiment of the present application adopts the following technical scheme: the utility model provides a clamping instrument that annular work piece hole processing was used, includes the frock tool, screws up the subassembly and is used for supporting to screw up fixedly to the frock tool, and the frock tool is used for carrying out the centre gripping to annular work piece fixed, its characterized in that: the tool fixture comprises: the tool chassis is provided with a plurality of supporting bottom rings on the upper surface of the tool chassis and coaxially with the upper surface of the tool chassis, the bottom surfaces of the plurality of supporting bottom rings are lower than one side surface of the tool chassis, the bottom surfaces of the plurality of supporting bottom rings are arranged in a stepped concave manner, the diameters of the plurality of supporting bottom rings are gradually reduced from outside to inside, the plurality of supporting bottom rings respectively correspond to annular workpieces with different specifications, and avoidance angles are arranged at the edges of the inner rings of the plurality of supporting bottom rings and are inclined; the inside at frock chassis is provided with a plurality of locating hole, can dismantle according to the processing demand in a plurality of locating hole and be connected with the bolt post, overlap jointly at the periphery of bolt post and be equipped with the clamp plate, and the clamp plate of different specifications corresponds the annular work piece of different specifications, and the clamp plate sets up to same axle center with the frock chassis, leaves the interval between clamp plate and the frock chassis and is used for holding annular work piece, is located one side of clamp plate at the periphery threaded connection of bolt post has fastening nut.
Further, in the embodiment of the utility model, the plurality of support bottom rings are all arranged in an inverted L shape, and the bottom surfaces of the plurality of support bottom rings are all arranged in a wire shape.
Further, in the embodiment of the utility model, the outer diameter of the supporting bottom ring is slightly smaller than the outer diameter of the corresponding annular workpiece, and the inner diameter of the supporting bottom ring is smaller than or equal to the inner diameter of the corresponding annular workpiece.
Further, in the embodiment of the utility model, a through circular through hole is formed in the surface of the coaxial center of the pressing plate, the diameter of the through hole wall of the circular through hole is larger than the inner diameter of the corresponding annular workpiece and smaller than the outer diameter of the corresponding annular workpiece, and the surface of the pressing plate, facing the annular workpiece, is also provided with a wire drawing shape.
Further, in an embodiment of the present utility model, a tightening assembly includes: the casing is screwed up, the inside of casing is screwed up and is set up to the cavity, the centre of a circle department of casing is screwed up and is connected with the axis of rotation through the bearing rotation, the one end of axis of rotation stretches out the surface of casing of screwing up and sets up to the hexagon, hexagonal end cooperation at the axis of rotation is provided with the spanner, the other end of axis of rotation stretches into the inside of casing of screwing up and is connected with the driving gear, the periphery meshing at the driving gear is connected with a plurality of driven gear, driven gear rotates through the pivot with the casing of screwing up to be connected, one end at the pivot is provided with the barrel casing of screwing up, the barrel casing of screwing up stretches out the surface of casing of screwing up and is the setting of separating mutually with the axis of rotation, be provided with hexagon groove and fastening nut in the inside of screwing up the barrel casing and cooperate.
The beneficial effects of the utility model are as follows: according to the utility model, the annular workpiece can be pre-clamped through the supporting bottom ring, and the outer diameter of the supporting bottom ring is set to be slightly smaller than 1-2 wires of the outer diameter of the annular workpiece, so that the interference fit of the annular workpiece can be realized when the annular workpiece is installed in the supporting bottom ring, and the pre-clamping of the annular workpiece is further realized. The tool tip of the machining tool can not contact the bottom surface of the supporting bottom ring when the inner diameter of the annular workpiece is machined to the tail end through the avoiding angle, so that cutting marks on the bottom surface of the supporting bottom ring are avoided, and abrasion caused by the fact that the tool tip of the machining tool touches the supporting bottom ring is avoided. The clamping of the annular workpiece can be achieved through the cooperation of the pressing plate and the tool chassis, and the friction force to the annular workpiece is increased through the wire drawing surface on the surface of the pressing plate, so that the clamping firmness to the annular workpiece is improved. The tightening assembly can simultaneously screw the tightening nuts, so that the same locking force of the tightening nuts to each bolt column is ensured, the fact that the pressing plate is loose due to the fact that the difference exists in the locking force of the tightening nuts is avoided, and the annular workpiece shakes and the processing precision of the annular workpiece is reduced is avoided.
Drawings
The application will be further described with reference to the drawings and examples.
FIG. 1 is a schematic diagram of the overall structure of a clamping tool for machining an inner hole of an annular workpiece.
Fig. 2 is a schematic view of another view of the platen of fig. 1 after being sectioned.
Fig. 3 is a schematic view of the internal structure of fig. 1 in an overall section.
Fig. 4 is a partially enlarged structural schematic diagram at a in fig. 3.
Fig. 5 is a schematic view of the structure of the tightening assembly in use with the clamping tool of fig. 1.
Fig. 6 is a schematic view of the internal structure of the tightening assembly of fig. 5 in cross-section.
10. Tool chassis 101, positioning hole 102 and supporting bottom ring
103. Avoiding angle 20, bolt column
30. Platen 301, through hole wall 40, fastening nut
50. Annular workpiece 501 and machined surface
60. Tightening assembly 601, tightening casing 602, and rotating shaft
603. Tightening sleeve 604, wrench 605, and driving gear
606. Driven gear
Detailed Description
In order to make the objects, technical solutions, and advantages of the present utility model more apparent, the embodiments of the present utility model will be further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are some, but not all, embodiments of the present utility model, are intended to be illustrative only and not limiting of the embodiments of the present utility model, and that all other embodiments obtained by persons of ordinary skill in the art without making any inventive effort are within the scope of the present utility model.
In the description of the present utility model, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," "horizontal," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "a," an, "" the first, "" the second, "" the third, "" the fourth, "" the fifth, "and the sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
For purposes of brevity and description, the principles of the embodiments are described primarily by reference to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. It will be apparent, however, to one of ordinary skill in the art that the embodiments may be practiced without limitation to these specific details. In some instances, well-known methods and structures have not been described in detail so as not to unnecessarily obscure the embodiments. In addition, all embodiments may be used in combination with each other.
As shown in fig. 1-6, this embodiment discloses a clamping tool for annular workpiece inner hole processing, including the frock tool, screw up subassembly 60 and be used for supporting to screw up fixedly to the frock tool, the frock tool is used for carrying out the centre gripping to annular workpiece 50 fixedly, and the frock tool includes: the tooling chassis 10 is provided with a plurality of supporting bottom rings 102 on the upper surface of the tooling chassis 10 and coaxially with the upper surface, the bottom surfaces of the plurality of supporting bottom rings 102 are lower than one side surface of the tooling chassis 10, the bottom surfaces of the plurality of supporting bottom rings 102 are arranged in a stepped concave mode, the bottom surfaces of the plurality of supporting bottom rings 102 are all arranged to be wire-shaped, the diameters of the plurality of supporting bottom rings 102 are gradually reduced from outside to inside, as shown in fig. 3 and 4, the plurality of supporting bottom rings 102 are all arranged to be inverted L-shaped, the plurality of supporting bottom rings 102 respectively correspond to annular workpieces 50 with different specifications, the outer diameters of the supporting bottom rings 102 are slightly smaller than the outer diameters of the corresponding annular workpieces 50, and the inner diameters of the supporting bottom rings 102 are smaller than or equal to the inner diameters of the corresponding annular workpieces 50. The annular workpiece 50 can be pre-clamped through the supporting bottom ring 102, and the outer diameter of the supporting bottom ring 102 is set to be slightly smaller than 1-2 wires of the outer diameter of the annular workpiece 50, so that interference fit of the annular workpiece 50 can be realized when the annular workpiece 50 is installed in the supporting bottom ring 102, and further pre-clamping of the annular workpiece 50 is realized.
As shown in fig. 4, the inner ring edges of the plurality of support bottom rings 102 are provided with avoiding angles 103, and the avoiding angles 103 are inclined. The tool tip of the machining tool does not contact the bottom surface of the supporting bottom ring 102 when the inner diameter of the annular workpiece 50 is machined to the tail end through the avoiding angle 103, so that cutting marks on the bottom surface of the supporting bottom ring 102 are avoided, and abrasion caused by the fact that the tool tip of the machining tool touches the supporting bottom ring 102 is avoided.
As shown in fig. 2 and 3, a plurality of positioning holes 101 are formed in the tool chassis 10, in this embodiment, the positioning holes 101 are formed according to the processing requirement of the annular workpiece 50 to be processed, bolt posts 20 are detachably connected in the plurality of positioning holes 101 according to the processing requirement, pressing plates 30 are sleeved on the peripheries of the bolt posts 20 together, pressing plates 30 of different specifications correspond to the annular workpiece 50 of different specifications, the pressing plates 30 and the tool chassis 10 are arranged in the same axis, a space is reserved between the pressing plates 30 and the tool chassis 10 and used for accommodating the annular workpiece 50, a fastening nut 40 is connected to one side of the pressing plates 30 on the periphery of the bolt posts 20 in a threaded manner, as shown in fig. 3, through circular through holes are formed in the coaxial surfaces of the pressing plates 30, the diameters of the through holes 301 of the circular through holes are larger than the inner diameters of the corresponding annular workpiece 50 and smaller than the outer diameters of the corresponding annular workpiece 50, and the pressing plates 30 are also arranged in a wire-pulling shape towards one side surface of the annular workpiece 50. The clamping of the annular workpiece 50 with corresponding specifications can be realized by matching the pressing plates 30 with the tool chassis 10 with different specifications, and the friction force on the annular workpiece 50 is increased through the wire drawing surface on the surface of the pressing plate 30, so that the clamping firmness of the annular workpiece 50 is improved.
As shown in fig. 5 and 6, the tightening assembly 60 includes: the casing 601 is screwed up, the inside of casing 601 is screwed up and is set up to cavity, the centre of a circle department of casing 601 is screwed up and is connected with axis of rotation 602 through the bearing rotation, the one end of axis of rotation 602 stretches out the surface of casing 601 of screwing up and sets up to the hexagon, hexagonal end cooperation at axis of rotation 602 is provided with spanner 604, the other end of axis of rotation 602 stretches into the inside of casing 601 of screwing up and is connected with driving gear 605, the periphery meshing at driving gear 605 is connected with a plurality of driven gear 606, driven gear 606 is connected with the rotation of casing 601 through the pivot, one end at the pivot is provided with and screws up sleeve 603, screw up sleeve 603 stretches out the surface of casing 601 of screwing up and is the setting of separating mutually with axis of rotation 602, be provided with hexagon groove and fastening nut 40 cooperation in the inside of screwing up sleeve 603. The tightening nuts 40 can be screwed simultaneously by the tightening assembly 60, so that the same locking force of the tightening nuts 40 to each bolt column 20 is ensured, and the phenomenon that the pressing plate 30 loosens in the machining process due to the difference of the locking force of the tightening nuts 40 to cause shaking of the annular workpiece 50 and the reduction of the machining precision of the annular workpiece 50 is avoided.
The working principle of the utility model is as follows: first, the bolt columns 20 are connected to the positioning holes 101 according to the processing requirements of the annular workpiece 50, and for convenience of explanation, the supporting base ring 102 is divided into a supporting base ring 102 (a) and a supporting base ring 102 (b) as shown in fig. 2 and 4, and in this embodiment, the bolt columns 20 are arranged in four in an even manner, and then, the operator installs the tool chassis 10 on the pneumatic clamping jaw plate of the machine tool, and clamps the outer peripheral surface of the tool chassis 10 by the clamping jaws of the pneumatic clamping jaw plate.
After the fixture chassis 10 is fixed, an operator takes out the annular workpiece 50 to be machined, puts the annular workpiece 50 to be machined into the supporting bottom ring 102 (b) of the fixture chassis 10, so that the outer peripheral surface of the annular workpiece 50 is in interference fit with the outer diameter of the supporting bottom ring 102 (b), a certain pre-clamping force is ensured between the annular workpiece 50 and the supporting bottom ring 102 (b), the inner diameter of the annular workpiece 50 to be machined is in the range of the avoiding angle 103, then, the operator sleeves the pressing plate 30 with corresponding specifications on the outer periphery of the bolt column 20, one side of the pressing plate 30 with a wire drawing surface is attached to the surface of the annular workpiece 50 to be machined, then, the operator connects the fastening nuts 40 on the outer periphery of each bolt column 20 in a threaded manner, and in order to ensure that the locking force of each fastening nut 40 is identical, the operator simultaneously screws each fastening nut 40 by screwing the assembly 60, and the specific manner is as follows: the tightening cylinder sleeve 603 is sleeved on the periphery of the fastening nut 40, so that the tightening cylinder sleeve 603 is attached to one side surface of the pressing plate 30, then an operator rotates a wrench 604 (anticlockwise rotation), the wrench 604 drives a rotating shaft 602 to rotate, the driving gear 605 is driven to rotate through the rotating shaft 602, then the driving gear 605 is utilized to drive a driven gear 606 meshed with the driving gear 605 to rotate (clockwise rotation), the tightening cylinder sleeve 603 connected with the rotating shaft is driven to rotate through the driven gear 606, the tightening cylinder sleeve 603 drives the fastening nut 40 to rotate, the pressing plate 30 is pressed through the fastening nut 40, the pressing plate 30 pushes the annular workpiece 50 to be machined to approach the tool chassis 10, the annular workpiece 50 to be machined is clamped through the pressing plate 30 and the tool chassis 10, then the operator removes the tightening assembly 60, and finally, a machining tool is controlled by a machine tool to precisely cut an inner hole of the annular workpiece 50.
While the foregoing describes illustrative embodiments of the present application so that those skilled in the art may understand the present application, the present application is not limited to the specific embodiments, and all applications and creations utilizing the inventive concepts are within the scope of the present application as long as the modifications are within the spirit and scope of the present application as defined and defined in the appended claims to those skilled in the art.
Claims (5)
1. The utility model provides a clamping instrument that annular work piece hole processing was used, includes the frock tool, screws up the subassembly and is used for supporting to screw up fixedly to the frock tool, and the frock tool is used for carrying out the centre gripping to annular work piece fixed, its characterized in that: the tool fixture comprises: the tool chassis is provided with a plurality of supporting bottom rings on the upper surface of the tool chassis and coaxially with the upper surface of the tool chassis, the bottom surfaces of the plurality of supporting bottom rings are lower than one side surface of the tool chassis, the bottom surfaces of the plurality of supporting bottom rings are arranged in a stepped concave manner, the diameters of the plurality of supporting bottom rings are gradually reduced from outside to inside, the plurality of supporting bottom rings respectively correspond to annular workpieces with different specifications, and avoidance angles are arranged at the edges of the inner rings of the plurality of supporting bottom rings and are inclined;
The inside at frock chassis is provided with a plurality of locating hole, can dismantle according to the processing demand in a plurality of locating hole and be connected with the bolt post, overlap jointly at the periphery of bolt post and be equipped with the clamp plate, and the clamp plate of different specifications corresponds the annular work piece of different specifications, and the clamp plate sets up to same axle center with the frock chassis, leaves the interval between clamp plate and the frock chassis and is used for holding annular work piece, is located one side of clamp plate at the periphery threaded connection of bolt post has fastening nut.
2. The clamping tool for machining an inner hole of an annular workpiece according to claim 1, wherein the plurality of support bottom rings are all of an inverted L shape, and the bottom surfaces of the plurality of support bottom rings are all of a wire-drawing shape.
3. The clamping tool for machining an inner hole of an annular workpiece according to claim 2, wherein the outer diameter of the supporting bottom ring is slightly smaller than the outer diameter of the corresponding annular workpiece, and the inner diameter of the supporting bottom ring is smaller than or equal to the inner diameter of the corresponding annular workpiece.
4. The clamping tool for machining an inner hole of an annular workpiece according to claim 1, wherein a through circular through hole is formed in the coaxial surface of the pressing plate, the diameter of the through hole wall of the circular through hole is larger than the inner diameter of the corresponding annular workpiece and smaller than the outer diameter of the corresponding annular workpiece, and the surface of the pressing plate, facing the annular workpiece, is also in a wire-pulling shape.
5. The clamping tool for machining an inner hole of an annular workpiece according to claim 1, wherein the tightening assembly comprises: the casing is screwed up, the inside of casing is screwed up and is set up to the cavity, the centre of a circle department of casing is screwed up and is connected with the axis of rotation through the bearing rotation, the one end of axis of rotation stretches out the surface of casing of screwing up and sets up to the hexagon, hexagonal end cooperation at the axis of rotation is provided with the spanner, the other end of axis of rotation stretches into the inside of casing of screwing up and is connected with the driving gear, the periphery meshing at the driving gear is connected with a plurality of driven gear, driven gear rotates through the pivot with the casing of screwing up to be connected, one end at the pivot is provided with the barrel casing of screwing up, the barrel casing of screwing up stretches out the surface of casing of screwing up and is the setting of separating mutually with the axis of rotation, be provided with hexagon groove and fastening nut in the inside of screwing up the barrel casing and cooperate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323066965.4U CN221313924U (en) | 2023-11-14 | 2023-11-14 | Clamping tool for machining inner hole of annular workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323066965.4U CN221313924U (en) | 2023-11-14 | 2023-11-14 | Clamping tool for machining inner hole of annular workpiece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221313924U true CN221313924U (en) | 2024-07-12 |
Family
ID=91807540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323066965.4U Active CN221313924U (en) | 2023-11-14 | 2023-11-14 | Clamping tool for machining inner hole of annular workpiece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221313924U (en) |
-
2023
- 2023-11-14 CN CN202323066965.4U patent/CN221313924U/en active Active
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