CN222344231U - Positioning fixture for turning inner hole of casting - Google Patents
Positioning fixture for turning inner hole of casting Download PDFInfo
- Publication number
- CN222344231U CN222344231U CN202421188635.4U CN202421188635U CN222344231U CN 222344231 U CN222344231 U CN 222344231U CN 202421188635 U CN202421188635 U CN 202421188635U CN 222344231 U CN222344231 U CN 222344231U
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- fixedly connected
- bearing
- castings
- screw rod
- turning inner
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- 238000005266 casting Methods 0.000 title claims abstract description 47
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000005457 optimization Methods 0.000 description 7
- 238000003754 machining Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Sliding-Contact Bearings (AREA)
Abstract
The utility model relates to the technical field of positioning fixtures, in particular to a positioning fixture for turning inner holes of castings, which comprises a base, wherein the top end of the base is fixedly connected with a bearing seat, a bearing is fixedly connected in a through hole on the bearing seat, a rotating sleeve is rotationally connected in the bearing seat, the end part of the rotating sleeve is fixedly connected with a sliding frame, a screw rod is rotationally connected on the sliding frame, two sliding blocks are in threaded connection on the screw rod and are in sliding connection with the sliding frame, the two sliding blocks are fixedly connected with the fixture, the stability of fixing the castings is improved, the distance between the fixtures can be adjusted according to castings with different sizes, the positioning structure can adapt to castings with different sizes, the operation is flexible and simple, the working efficiency is improved, the applicability of the inner hole turning machine is enlarged, the fixtures with various sizes are not required to be prepared, the cost is saved, the structure is simple, and the later maintenance is convenient.
Description
Technical Field
The utility model relates to a positioning fixture, in particular to a positioning fixture for turning an inner hole of a casting, and belongs to the technical field of positioning fixtures.
Background
The fixture is a common tool in the machining process and is used for fixing workpieces to ensure machining precision and stability, the fixture is classified into various types, the most common type is a machining fixture, a welding fixture, a measuring fixture and the like, the shapes of existing precise castings are different, and turning of inner holes is needed on certain precise castings, so that the castings are required to be positioned through the positioning fixture.
Most of the castings of the cylinder are fixed through the three-jaw chuck, although the stability is good, the internal structure is complex, the machining precision requirement is high, and the transmission assembly wraps the inside of the three-jaw chuck, so that the overhaul and maintenance efficiency is affected, and a positioning fixture for turning an inner hole of the castings is needed.
Disclosure of utility model
The utility model aims to solve the problems and provide the positioning clamp for turning the inner hole of the casting, which not only improves the stability of fixing the casting, but also can adjust the distance between the clamps according to castings with different sizes so that the positioning structure can adapt to castings with different sizes, is flexible and simple to operate, improves the working efficiency, enlarges the applicability of the inner hole turning machine, does not need to prepare clamps with various sizes, saves the cost, has a simple structure and is convenient for the later maintenance.
The positioning fixture for turning the inner hole of the casting comprises a base, wherein the top end of the base is fixedly connected with a bearing seat, a bearing is fixedly connected in a through hole on the bearing seat, a rotating sleeve is rotatably connected in the bearing, the end part of the rotating sleeve is fixedly connected with a positioning structure, the positioning structure comprises a sliding frame, the end part of the rotating sleeve is fixedly connected with a sliding frame, the sliding frame is rotatably connected with a screw rod, two sliding blocks are connected onto the screw rod in a threaded manner, the sliding blocks are in sliding connection with the sliding frame, the two sliding blocks are fixedly connected with fixtures, a rotating shaft is fixedly connected inside the rotating sleeve, and one end of the rotating shaft is connected with a power structure through a coupling.
Preferably, the sliding frame is of a rectangular structure, and the sliding frame is arranged in the vertical direction.
Preferably, the directions of threads at two ends of the screw rod are opposite, and the two sliding blocks and the two clamps are symmetrically distributed about the middle part of the screw rod.
Preferably, both ends of the screw rod are fixedly connected with a knob, and a plurality of round holes are formed in the knob in a circumferential array.
Preferably, the outer ring of the bearing is fixedly connected with the bearing seat, the inner ring of the bearing is fixedly connected with the rotating sleeve, and the outer ring of the bearing is rotationally connected with the rotating sleeve through balls in the bearing.
Preferably, the top end of the bearing is abutted against a fixed sleeve, the fixed sleeve is fixedly connected with the top end of the bearing seat, and the fixed sleeve is of a semicircular structure.
Preferably, the end part of the rotating shaft is fixedly connected with a coupler, the other end of the coupler is fixedly connected with a power structure, the power structure comprises a motor shaft, the other end of the coupler is fixedly connected with a motor shaft, and the end part of the motor shaft is fixedly connected with a motor.
Preferably, the top fixedly connected with mount pad of base, the through-hole on the mount pad is in same horizontal plane with the through-hole on the bearing frame, the through-hole swivelling joint of mount pad has the motor shaft, one side fixedly connected with motor of mount pad.
Preferably, four waist-shaped grooves are formed in the base, two waist-shaped grooves are distributed on two sides of the bearing seat, and the other two waist-shaped grooves are distributed on two sides of the mounting seat.
The rotary sleeve has the advantages that the end part of the rotary sleeve is fixedly connected with the sliding frame, the sliding frame is rotationally connected with the screw rod, the screw rod is in threaded connection with two sliding blocks, the sliding blocks are in sliding connection with the sliding frame, the two sliding blocks are fixedly connected with the clamps, when inner hole turning is carried out on different castings, the screw rod is rotated to drive the two sliding blocks to move in opposite directions in the sliding frame, the sliding blocks move to drive the two clamps to move towards the center of the screw rod, the screw rod is continuously rotated until the two clamps abut against the castings, and therefore the positioning of the castings is achieved, stability of fixing the castings is improved, the distance between the clamps can be adjusted according to the castings with different sizes, the positioning structure can adapt to castings with different sizes, operation is flexible and simple, working efficiency is improved, applicability of inner hole turning machinery is improved, clamps with various sizes are not required to be prepared, maintenance cost is saved, the structure is simple, and later maintenance is convenient.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a cross-sectional view of the entirety of the present utility model;
fig. 3 is an enlarged view of a portion a shown in fig. 2;
Fig. 4 is a schematic diagram of a connection structure between a screw and a slide frame according to the present utility model.
In the figure, 1, a base; 2, a waist-shaped groove, 3, a bearing seat, 4, a fixed sleeve, 5, a rotating shaft, 6, a rotating sleeve, 7, a positioning structure, 701, a sliding frame, 702, a knob, 703, a round hole, 704, a clamp, 705, a sliding block, 706, a screw rod, 8, a coupler, 9, a power structure, 901, a motor shaft, 902, a motor, 10, a mounting seat, 11 and a bearing.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-4, a positioning fixture for turning inner holes of castings comprises a base 1, a bearing seat 3 is fixedly connected to the top end of the base 1, a bearing 11 is fixedly connected to a through hole in the bearing seat 3, a rotating sleeve 6 is rotatably connected to the bearing 11, a positioning structure 7 is fixedly connected to the end of the rotating sleeve 6, the positioning structure 7 comprises a sliding frame 701, the end of the rotating sleeve 6 is fixedly connected with the sliding frame 701, a screw rod 706 is rotatably connected to the sliding frame 701, two sliding blocks 705 are connected to the screw rod 706 in a threaded manner, the sliding blocks 705 are slidably connected with the sliding frame 701, two sliding blocks 705 are fixedly connected to a fixture 704, the sliding frame 701 is in a rectangular structure, the sliding frame 701 is arranged in a vertical direction, a rotating shaft 5 is fixedly connected to the inside of the rotating sleeve 6, one end of the rotating shaft 5 is connected with a power structure 9 through a coupling 8, when inner holes of different castings are turned, a screwdriver or other tools are inserted into the circular holes 703 on the rotating frame 702, the knob 702 is driven to rotate by the knob 702, the knob 702 is rotatably connected with a screw rod 706, two sliding blocks 705 are rotatably connected to the two sliding blocks 706, the two sliding blocks 706 are rotatably driven by the screw rods 706, and the two sliding blocks 706 are not flexibly driven by the screw rods 706, and are flexibly and flexibly driven by the two sliding blocks 706, and flexibly move to the two sliding blocks 706, and can move in opposite directions, and are opposite to the size. There is no need to prepare clamps 704 of various sizes, saving costs.
As a technical optimization scheme of the utility model, the directions of threads at two ends of the screw rod 706 are opposite, and the two sliding blocks 705 and the two clamps 704 are symmetrically distributed about the middle part of the screw rod 706, so that the two sliding blocks 705 respectively drive the two clamps 704 to move towards the center of the screw rod 706, and the positioning function of castings is realized.
As a technical optimization scheme of the utility model, both ends of the screw rod 706 are fixedly connected with a knob 702, a plurality of round holes 703 are arranged on the knob 702 in a circumferential array, and the knob 702 is arranged to facilitate the screw rod 706 to rotate.
As a technical optimization scheme of the utility model, the outer ring of the bearing 11 is fixedly connected with the bearing seat 3, the inner ring of the bearing 11 is fixedly connected with the rotating sleeve 6, the outer ring of the bearing 11 is rotationally connected with the rotating sleeve 6 through balls in the bearing 11, the bearing seat 3 plays a supporting role on the rotating sleeve 6, and the bearing 11 has the characteristics of small sliding resistance, low power consumption, easy starting and the like, and because the outer ring of the bearing 11 and the rotating sleeve 6 realize low-friction rotation through the rolling of the balls in the bearing 11, the friction resistance in the moving process of the rotating sleeve 6 is reduced, so that the rotating sleeve 6 rotates more smoothly and is not easy to damage.
As a technical optimization scheme of the utility model, the top end of the bearing 11 is abutted against the fixed sleeve 4, the fixed sleeve 4 is fixedly connected with the top end of the bearing seat 3, the fixed sleeve 4 is of a semicircular structure, after the bearing 11 is arranged on the bearing seat 3, the two ends of the fixed sleeve 4 are fixed with the top end of the bearing seat 3 through screws, and at the moment, the inner side of the fixed sleeve 4 is abutted against the bearing 11 downwards, so that the bearing 11 is fixed by being matched with the bearing seat 3.
According to the technical optimization scheme, the end part of the rotating shaft 5 is fixedly connected with the coupler 8, the other end of the coupler 8 is fixedly connected with the power structure 9, the power structure 9 comprises the motor shaft 901, the other end of the coupler 8 is fixedly connected with the motor shaft 901, the end part of the motor shaft 901 is fixedly connected with the motor 902, after a casting is fixed, the motor 902 is started, the motor 902 drives the motor shaft 901 to rotate, the motor shaft 901 drives the coupler 8 to rotate, the coupler 8 drives the rotating shaft 5 to rotate, the rotating shaft 5 drives the rotating sleeve 6 to rotate, the rotating sleeve 6 drives the positioning structure 7 to rotate, and therefore the casting is driven to rotate, and therefore inner hole turning of the casting is achieved, uneven abrasion caused by installation errors of the rotating shaft 5 and the motor shaft 901 and mechanical faults caused by vibration, noise and the like can be reduced, and the stability of connection of the rotating shaft 5 and the motor shaft 901 is improved.
As a technical optimization scheme of the utility model, the top end of the base 1 is fixedly connected with the mounting seat 10, a through hole on the mounting seat 10 is in the same horizontal plane with a through hole on the bearing seat 3, a motor shaft 901 is rotationally connected with the through hole of the mounting seat 10, a motor 902 is fixedly connected with one side of the mounting seat 10, the motor 902 and the motor shaft 901 are conveniently mounted, and the motor shaft 901 is conveniently connected with the rotating shaft 5 through the coupler 8, so that rotating power is provided.
As a technical optimization scheme of the utility model, four waist-shaped grooves 2 are formed in the base 1, wherein two waist-shaped grooves 2 are distributed on two sides of the bearing seat 3, the other two waist-shaped grooves 2 are distributed on two sides of the mounting seat 10, and the arrangement of the waist-shaped grooves 2 is convenient for mounting the machine.
When the utility model is used, firstly, when inner holes of different castings are turned, a screwdriver or other tools are inserted into the round holes 703 on the knob 702, the knob 702 drives the knob 702 to rotate, the screw rod 706 is driven by the knob 702 to rotate, as threads at two ends of the screw rod 706 are opposite, the screw rod 706 drives two sliding blocks 705 to move in opposite directions in the sliding frame 701, the sliding blocks 705 move to drive two clamps 704 to move towards the center of the screw rod 706, and the screw rod 706 is continuously rotated until the two clamps 704 abut against the castings, thereby realizing the positioning of the castings, not only improving the stability of casting fixation, but also being capable of adjusting the distance between the clamps 704 according to castings with different sizes, so that the positioning structure 7 can adapt to castings with different sizes, and the utility model has flexible and simple operation, improves the working efficiency, and expands the applicability of inner hole turning machinery without preparing clamps 704 with various sizes, and saves the cost; when the casting is fixed, the motor 902 is started, the motor 902 drives the motor shaft 901 to rotate, the motor shaft 901 drives the coupler 8 to rotate, the coupler 8 drives the rotating shaft 5 to rotate, the rotating shaft 5 drives the rotating sleeve 6 to rotate, the rotating sleeve 6 drives the positioning structure 7 to rotate, thereby driving the casting to rotate so as to realize the turning of an inner hole of the casting, the arrangement of the coupler 8 can reduce uneven abrasion caused by installation errors of the rotating shaft 5 and the motor shaft 901 and mechanical faults caused by vibration, noise and the like, the stability of the connection between the rotating shaft 5 and the motor shaft 901 is improved, the arrangement of the bearing seat 3 plays a supporting role on the rotating sleeve 6, the bearing 11 has the characteristics of small sliding resistance, less power consumption, easy starting and the like, and the outer ring of the bearing 11 and the rotating sleeve 6 realize low friction rotation through the rolling of balls in the bearing 11, the friction resistance in the moving process of the rotating sleeve 6 is reduced, so that the rotating sleeve 6 rotates more smoothly and is not easy to damage.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (9)
1. The positioning clamp for turning inner holes of castings comprises a base (1) and is characterized in that the top end of the base (1) is fixedly connected with a bearing seat (3), a bearing (11) is fixedly connected in a through hole in the bearing seat (3), a rotating sleeve (6) is rotationally connected to the bearing (11), a positioning structure (7) is fixedly connected to the end portion of the rotating sleeve (6), the positioning structure (7) comprises a sliding frame (701), the sliding frame (701) is fixedly connected to the end portion of the rotating sleeve (6), a screw rod (706) is rotationally connected to the sliding frame (701), two sliding blocks (705) are connected to the screw rod (706) in a threaded mode, the sliding blocks (705) are in sliding connection with the sliding frame (701), clamps (704) are fixedly connected to the sliding blocks (705), a rotating shaft (5) is fixedly connected to the inside of the rotating sleeve (6), and one end of the rotating shaft (5) is connected to a power structure (9) through a coupling (8).
2. The positioning fixture for turning inner holes of castings according to claim 1, wherein the sliding frame (701) is of a rectangular structure, and the sliding frame (701) is arranged in a vertical direction.
3. A positioning fixture for turning inner holes of castings according to claim 1, wherein the screw threads at two ends of the screw rod (706) are opposite in direction, and the two sliding blocks (705) and the two fixtures (704) are symmetrically distributed about the middle of the screw rod (706).
4. The positioning fixture for turning inner holes of castings according to claim 3, wherein the two ends of the screw rod (706) are fixedly connected with a knob (702), and a plurality of round holes (703) are formed in the knob (702) in a circumferential array.
5. The positioning fixture for turning inner holes of castings, as set forth in claim 1, is characterized in that an outer ring of the bearing (11) is fixedly connected with the bearing seat (3), an inner ring of the bearing (11) is fixedly connected with the rotating sleeve (6), and the outer ring of the bearing (11) is rotatably connected with the rotating sleeve (6) through balls in the bearing (11).
6. The positioning fixture for turning inner holes of castings according to claim 5, wherein the top end of the bearing (11) is abutted against a fixing sleeve (4), the fixing sleeve (4) is fixedly connected with the top end of the bearing seat (3), and the fixing sleeve (4) is of a semicircular structure.
7. The positioning fixture for turning inner holes of castings according to claim 1, wherein the end part of the rotating shaft (5) is fixedly connected with a coupler (8), the other end of the coupler (8) is fixedly connected with a power structure (9), the power structure (9) comprises a motor shaft (901), the other end of the coupler (8) is fixedly connected with the motor shaft (901), and the end part of the motor shaft (901) is fixedly connected with the motor (902).
8. The positioning fixture for turning inner holes of castings according to claim 6, wherein the top end of the base (1) is fixedly connected with a mounting seat (10), a through hole in the mounting seat (10) and a through hole in the bearing seat (3) are in the same horizontal plane, a motor shaft (901) is rotationally connected in the through hole of the mounting seat (10), and a motor (902) is fixedly connected to one side of the mounting seat (10).
9. The positioning fixture for turning inner holes of castings according to claim 1, wherein four waist-shaped grooves (2) are formed in the base (1), two waist-shaped grooves (2) are distributed on two sides of the bearing seat (3), and the other two waist-shaped grooves (2) are distributed on two sides of the mounting seat (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421188635.4U CN222344231U (en) | 2024-05-27 | 2024-05-27 | Positioning fixture for turning inner hole of casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421188635.4U CN222344231U (en) | 2024-05-27 | 2024-05-27 | Positioning fixture for turning inner hole of casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222344231U true CN222344231U (en) | 2025-01-14 |
Family
ID=94196271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421188635.4U Active CN222344231U (en) | 2024-05-27 | 2024-05-27 | Positioning fixture for turning inner hole of casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222344231U (en) |
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2024
- 2024-05-27 CN CN202421188635.4U patent/CN222344231U/en active Active
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