A positioning mechanism for cross assembly machining

Abstract

The utility model relates to cross assembly processing technical field, concretely for a kind of positioning mechanism for cross assembly processing, it include: workbench, T-shaped sliding base, positioning fixture;Four strip through-slots are equidistantly annularly provided on the workbench;T-shaped sliding base is movably clamped in strip through-slott, positioning fixture is installed and set in T-shaped sliding base end, T-shaped sliding base is set on workbench by auxiliary assembly;After the recess of U-shaped mounting plate is clamped into the end of T-shaped sliding base by screw fixed position, it is realized that positioning fixture can be detachably set on T-shaped sliding base, when T-shaped sliding base moves and adjusts position along strip through-slott, rack and pinion engage in and further drive rotating shaft and shaft sleeve rotation, and the processing debris accumulated in strip through-slott is pushed by the rotation of shaft sleeve and push plate, the accumulation state of debris is destroyed to make debris fall from strip through-slott, avoid debris accumulation in strip through-slott to hinder positioning fixture normal movement and adjustment.

Description

Technical Field

[0001] This utility model relates to the field of cross-shaped assembly machining technology, specifically a positioning mechanism for cross-shaped assembly machining. Background Technology

[0002] Chinese patent document CN219504567U discloses a positioning fixture for the production of universal couplings, including a positioning mechanism and a worktable. The positioning mechanism is located on the top of the worktable and consists of a base plate, a lower arc plate, an upper arc plate, a locking fastener, and a locking movable component. The lower arc plate is fixedly connected to the top of the base plate, and the upper arc plate is hinged directly above the lower arc plate. The locking fastener is fixedly connected to one end of the lower arc plate, and the locking movable component is installed at one end of the upper arc plate, engaging with the locking fastener. The positioning mechanism positions the universal joint shaft. The position of the positioning mechanism can move along a strip groove, maximizing the exposure of the universal joint shaft surface for surface processing by other operating equipment. Furthermore, the specifications of the positioning mechanism can be adjusted according to the size of the universal joint shaft, facilitating the positioning of universal joint shafts of different sizes.

[0003] However, in the above solution, during the machining of the cross assembly, the positioning fixture on the worktable is used to position and hold the cross shaft. The positioning fixture is composed of two arc plates that are hinged to each other. By moving the positioning fixture along the strip groove on the worktable, the positioning fixture can be adjusted according to the size of the cross shaft. During use, machining debris is prone to accumulate in the strip groove during the machining of the cross assembly, which hinders the normal movement and adjustment of the positioning fixture. Improvement and optimization are needed. Utility Model Content

[0004] The purpose of this invention is to provide a positioning mechanism for machining cross-shaped assemblies, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a positioning mechanism for machining cross-shaped assemblies, comprising: a worktable, a T-shaped slide, and a positioning fixture; the four corners of the bottom end of the worktable are connected to a base by pillars, and four strip-shaped through slots are equidistantly arranged in a ring on the worktable; the T-shaped slide is movably engaged in the strip-shaped through slots, and a positioning fixture is installed at the end of the T-shaped slide; the T-shaped slide is mounted on the worktable by an auxiliary component.

[0006] Preferably, the protrusions on both sides of the slide block are attached to the end wall of the worktable. The positioning fixture is composed of two arc plates that are hinged to each other and is fixed with hand-tightening screws to fix the relative position of the two arc plates. The bottom arc plate of the positioning fixture is connected to the U-shaped mounting plate. The end of the T-shaped slide block is snapped into the groove of the U-shaped mounting plate. The side wall of the T-shaped slide block is provided with mounting thread holes for fixing the U-shaped mounting plate and the T-shaped slide block with screws.

[0007] Preferably, the auxiliary component includes a rotating shaft, a gear, a lever, a U-shaped frame plate, and a clamping plate. A slot is provided on the side wall of the T-shaped slide. The rotating shaft is rotatably mounted on the side wall of the T-shaped slide. One end of the rotating shaft is connected to a gear, and the other end passes through the slot and is connected to a bushing.

[0008] Preferably, the bushing is provided with equidistant annular connecting plates on its peripheral wall, the bushing and the connecting plates are movably disposed in the slot, a chip baffle is disposed between two adjacent connecting plates, the side wall of the chip baffle is connected to the side wall of the connecting plate, the two side walls of the chip baffle are attached to the side wall of the slot, and a U-shaped frame is provided with equidistant annular connecting plates on the bottom wall of the workbench, the two end walls of the U-shaped frame are connected to the bottom wall of the workbench.

[0009] Preferably, a rack is connected to the bottom wall of the groove of the U-shaped frame plate, the rack meshes with a gear, and a first convex plate is connected to the side wall of the T-shaped slide. Ball bearings are symmetrically and movably embedded at the top of the first convex plate, and the ball bearings contact the bottom wall of the worktable.

[0010] Preferably, a second convex plate is connected to the side wall of the T-shaped slide block, a knob bolt is threadedly connected to the second convex plate, a clamping plate is connected to the end of the screw of the knob bolt, and an anti-slip hard rubber pad is connected to the end of the clamping plate, the anti-slip hard rubber pad is in contact with the bottom wall of the worktable.

[0011] Compared with the prior art, the beneficial effects of this utility model are: After the T-shaped slide end is engaged with the groove of the U-shaped mounting plate and fixed in position with screws, the positioning fixture can be detachably mounted on the T-shaped slide. When the T-shaped slide moves along the strip groove to adjust its position, the rack and gear mesh, thereby driving the rotating shaft and bushing to rotate. The push plate moves with the bushing to push the processing debris accumulated in the strip groove, breaking the accumulation state of the debris and causing the debris to fall out of the strip groove, thus preventing the debris from accumulating in the strip groove and hindering the normal movement and adjustment of the positioning fixture. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a bottom view of the workbench structure of this utility model; Figure 3 This is a schematic diagram of the U-shaped frame structure connection of this utility model; Figure 4This is a schematic diagram of the T-shaped slide structure connection of this utility model; Figure 5 This utility model Figure 4 A magnified view of a portion of the image; Figure 6 This utility model's rotating shaft structure connection diagram.

[0013] In the diagram: 1. Workbench; 2. Base; 3. Strip groove; 4. T-shaped slide; 5. Positioning fixture; 6. Mounting threaded hole; 7. U-shaped mounting plate; 8. Hand screw; 9. Hollow slot; 10. Rotary shaft; 11. Gear; 12. Bushing; 13. Dial plate; 14. U-shaped frame plate; 15. Rack; 16. First convex plate; 17. Ball bearing; 18. Second convex plate; 19. Knob bolt; 20. Clamping plate; 21. Anti-slip hard rubber pad; 22. Chip guard. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0015] Please see Figures 1-6 This utility model provides a technical solution: a positioning mechanism for machining cross assemblies, comprising: a worktable 1, a T-shaped slide 4, and a positioning fixture 5; the four corners of the bottom end of the worktable 1 are connected to the base 2 by pillars, and four strip-shaped through slots 3 are equidistantly arranged in a ring on the worktable 1; the T-shaped slide 4 is movably engaged in the strip-shaped through slots 3, and the positioning fixture 5 is installed at the end of the T-shaped slide 4; the T-shaped slide 4 is set on the worktable 1 by auxiliary components.

[0016] The protrusions on both sides of the T-shaped slide 4 fit against the end wall of the workbench 1. The positioning fixture 5 is composed of two arc plates that are hinged together and is fixed with a hand screw 8 to fix the relative position of the two arc plates. The bottom arc plate of the positioning fixture 5 is connected to the U-shaped mounting plate 7. The end of the T-shaped slide 4 is snapped into the groove of the U-shaped mounting plate 7. The side wall of the T-shaped slide 4 is provided with a mounting thread hole 6 for fixing the U-shaped mounting plate 7 and the T-shaped slide 4 with screws.

[0017] The positioning clamp 5 is composed of two arc plates hinged together, which can rotate and open vertically. Anti-slip pads are provided on the inner sidewalls of the two arc plates for positioning and clamping the cross shaft. After the end walls of the two arc plates are snapped together, the position of the arc plates is fixed by screwing the hand screws 8 into the threaded holes on the two arc plates. The end of the T-shaped slide 4 is snapped into the groove of the U-shaped mounting plate 7, which facilitates the replacement of the positioning clamp 5 with a shape that is suitable for clamping the cross shaft. After the screw passes through the through hole on the side wall of the U-shaped mounting plate 7, it is threaded into the mounting threaded hole 6, so that the positioning clamp 5 can be installed on the T-shaped slide 4.

[0018] The T-shaped slide 4 has a slot 9 on its side wall. The rotating shaft 10 in the auxiliary component is rotatably mounted on the side wall of the T-shaped slide 4. One end of the rotating shaft 10 is connected to a gear 11, and the other end passes through the slot 9 and is connected to a bushing 12.

[0019] The bushing 12 is provided with equidistant annular connecting plates 13 on its peripheral wall. The bushing 12 and the plates 13 are movably disposed in the slot 9. A chip baffle 22 is provided between two adjacent plates 13. The side wall of the chip baffle 22 is connected to the side wall of the plate 13. The two side walls of the chip baffle 22 are attached to the side wall of the slot 9. The U-shaped frame plate 14 is provided with equidistant annular connecting plates on the bottom wall of the worktable 1. The two end walls of the U-shaped frame plate 14 are connected to the bottom wall of the worktable 1.

[0020] A rotatable bushing 12 is installed in the slot 9 of the T-shaped slide 4. When the lever 13 is in the vertical upward position, the end wall of the lever 13 is higher than the table surface of the worktable 1. The lever 13 rotates with the bushing 12 to move the processing chips accumulated in the strip-shaped through groove 3, breaking the accumulation state of the chips and causing the chips to fall from the strip-shaped through groove 3. A chip baffle 22 is installed between two adjacent levers 13 to block the bushing 12. The sides of the chip baffle 22 are set at an angle to facilitate the chips falling into the chip baffle 22. The two side walls of the chip baffle 22 are attached to the side walls of the slot 9 to block and collect the chips, preventing the chips from affecting the rotation of the bushing 12.

[0021] A rack 15 is connected to the bottom wall of the groove of the U-shaped frame plate 14, and the rack 15 meshes with the gear 11. A first convex plate 16 is connected to the side wall of the T-shaped slide block 4, and a ball bearing 17 is symmetrically and movably embedded at the top of the first convex plate 16, and the ball bearing 17 contacts the bottom wall of the worktable 1.

[0022] The ball bearing 17 at the top of the first protruding plate 16 contacts and engages with the bottom wall of the worktable 1. The protrusions on both sides of the T-shaped slide 4 fit against the end wall of the worktable 1, ensuring that the T-shaped slide 4 moves stably and horizontally within the strip-shaped through groove 3. The U-shaped frame plate 14 and the strip-shaped through groove 3 are set in the same number of groups. The partitions are set on both sides of the T-shaped slide 4, and the partitions are located below the table surface of the worktable 1. The U-shaped frame plate 14 and the strip-shaped through groove 3 are at a certain distance from each other. The partitions block the paddle plate 13 and the rack 15 to prevent debris from falling on the rack 15. The rack 15 meshes with the gear 11 and is used to drive the rotation of the shaft 10 and the bushing 12 when the T-shaped slide 4 moves.

[0023] A second convex plate 18 is connected to the side wall of the T-shaped slide block 4. A knob bolt 19 is threadedly connected to the second convex plate 18. A clamping plate 20 is connected to the end of the screw of the knob bolt 19. An anti-slip hard rubber pad 21 is connected to the end of the clamping plate 20. The anti-slip hard rubber pad 21 is in contact with the bottom wall of the workbench 1.

[0024] Rotating the knob bolt 19 controls the up-and-down movement of the abutment plate 20. The anti-slip hard rubber pad 21 contacts the bottom wall of the workbench 1 to fix the position of the T-shaped slide 4 in the strip groove 3.

[0025] Working principle: Select the appropriate positioning fixture 5 according to the model of the cross shaft component. After the end of the T-shaped slide 4 is engaged with the groove of the U-shaped mounting plate 7, the position is fixed by screws, so that the positioning fixture 5 is installed on the T-shaped slide 4. Rotate the knob bolt 19 to control the abutment plate 20 to move upward until the anti-slip hard rubber pad 21 contacts the bottom wall of the worktable 1, thereby fixing the position of the T-shaped slide 4 in the strip groove 3. The positioning fixture 5 can be used to position and clamp the cross shaft component. When the T-shaped slide 4 needs to move along the groove, the positioning fixture 5 can be used to position and clamp the cross shaft component. When adjusting the position of the strip groove 3 to accommodate cross shafts of different sizes for positioning and clamping, loosen the knob bolt 19 and move the T-shaped slide 4 along the strip groove 3. During the movement of the T-shaped slide 4, the rack 15 meshes with the gear 11, thereby driving the rotating shaft 10 and the bushing 12 to rotate. The lever 13 moves with the bushing 12, moving the machining debris accumulated in the strip groove 3, breaking the accumulation state of the debris and causing the debris to fall out of the strip groove 3, thus preventing the debris from accumulating in the strip groove 3 and hindering the normal movement and adjustment of the positioning fixture.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A positioning mechanism for machining cross-shaped assemblies, comprising: Workbench (1), T-shaped slide (4), positioning fixture (5); the four corners of the bottom of the workbench (1) are connected to the base (2) by pillars, and four strip-shaped through slots (3) are equidistantly arranged in a ring on the workbench (1). The features are as follows: the T-shaped slide (4) is movably engaged in the strip groove (3), and a positioning clamp (5) is installed at the end of the T-shaped slide (4). The T-shaped slide (4) is set on the workbench (1) through an auxiliary component; the protrusions on both sides of the T-shaped slide (4) are attached to the end wall of the workbench (1). The positioning clamp (5) is composed of two arc plates that are hinged to each other and is fixed with a hand screw (8) to fix the relative position of the two arc plates. The bottom arc plate of the positioning clamp (5) is connected to the U-shaped mounting plate (7). The end of the T-shaped slide (4) is engaged in the U-shaped mounting plate. The T-shaped slide (4) has a threaded hole (6) on its side wall for fixing the U-shaped mounting plate (7) and the T-shaped slide (4) with screws. The auxiliary components include a rotating shaft (10), a gear (11), a lever (13), a U-shaped frame plate (14), and a clamping plate (20). The T-shaped slide (4) has a slot (9) on its side wall. The rotating shaft (10) is rotatably mounted on the side wall of the T-shaped slide (4). One end of the rotating shaft (10) is connected to a gear (11), and the other end passes through the slot (9) and is connected to a bushing (12).

2. The positioning mechanism for machining a cross-shaped assembly according to claim 1, characterized in that: The bushing (12) is provided with equidistant ring-connected paddle plates (13) on its peripheral wall. The bushing (12) and paddle plates (13) are movably arranged in the slot (9). A chip baffle (22) is provided between two adjacent paddle plates (13). The side wall of the chip baffle (22) is connected to the side wall of the paddle plate (13). The two side walls of the chip baffle (22) are attached to the side wall of the slot (9). The U-shaped frame plate (14) is provided with equidistant ring-connected paddle plates on the bottom wall of the workbench (1). The two end walls of the U-shaped frame plate (14) are connected to the bottom wall of the workbench (1).

3. A positioning mechanism for machining a cross-shaped assembly according to claim 2, characterized in that: A rack (15) is connected to the bottom wall of the groove of the U-shaped frame plate (14), the rack (15) meshes with the gear (11), a first convex plate (16) is connected to the side wall of the T-shaped slide (4), and a ball bearing (17) is symmetrically and movably embedded at the top of the first convex plate (16), the ball bearing (17) contacts the bottom wall of the worktable (1).

4. A positioning mechanism for machining a cross-shaped assembly according to claim 3, characterized in that: A second convex plate (18) is connected to the side wall of the T-shaped slide (4). A knob bolt (19) is threadedly connected to the second convex plate (18). A clamping plate (20) is connected to the end of the screw of the knob bolt (19). An anti-slip hard rubber pad (21) is connected to the end of the clamping plate (20). The anti-slip hard rubber pad (21) is in contact with the bottom wall of the workbench (1).

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