A rotary groove rolling mechanism

Abstract

The present invention discloses a rotary grooving mechanism, which realizes the revolution and rotation of a workpiece through a power source, and the hob is installed on the revolution track of the workpiece, and the workpiece is grooving during the rotation process; at the same time, with the revolution of the workpiece, it moves from the loading station to the unloading station, omitting the use of a mechanical arm, greatly simplifying the mechanical structure of the rolling hook mechanism, reducing the difficulty of debugging and the cost of equipment, and at the same time, through the rotation of the workpiece, pure rolling is achieved between the workpiece and the hob, avoiding the pulling out of burrs during the grooving process, and improving the quality stability of the grooving process.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing equipment, in particular to a rotary groove rolling mechanism. Background Art

[0002] In mechanical processing, it is often necessary to perform groove processing on parts. The processing plan usually involves three aspects: rotation of the workpiece, rotation of the hob and feed of the hob. In the prior art, the equipment for groove processing is usually complex in structure. The rotation of the product, rotation of the hob and feed of the hob are driven by different power sources (for example, the rotation of the product and the hob are driven by two servo motors respectively, and the feed of the hob is driven by a cam). Due to the three different power sources, the synchronization is poor and the debugging is also troublesome. The processed grooves are prone to burrs, the groove depth is uneven, and the quality stability is poor. After completion, the robot needs to be sent to the next station. Summary of the invention

[0003] In order to solve the above technical problems, the purpose of the present invention is to provide a rotary grooving mechanism, which combines the three power sources of product rotation, hob rotation and hob feed into one, reduces equipment cost and debugging difficulty, and improves product quality stability.

[0004] In view of the above problems, a technical solution adopted by the present invention is: to provide a rotary grooving mechanism, characterized in that it includes a power input mechanism and a mounting seat, a accommodating space is arranged in the mounting seat, the accommodating space includes a rotating shaft, a hob, a plurality of rollers arranged in pairs, a revolution transmission mechanism and a rotation transmission mechanism are arranged in the accommodating space; the power input mechanism drives the roller to revolve around the rotating shaft through the revolution transmission mechanism, and the power input mechanism drives the roller to rotate around its rotating shaft through the rotation transmission mechanism, and an inlet and a return port connected to the accommodating space are arranged on the mounting seat; after the workpiece enters the accommodating space from the inlet, it falls between a pair of rollers and the inner wall of the accommodating space, and rotates around its own axis while revolving around the rotating shaft driven by the rollers, the hob is arranged on the revolution trajectory of the workpiece, and grooving is performed on the workpiece during the movement of the workpiece from the inlet to the outlet.

[0005] Furthermore, the revolution transmission mechanism includes an intermediate shaft hingedly mounted on the mounting seat, the intermediate shaft is arranged on the rotating shaft of the accommodating space, a revolution support plate is fixed on the intermediate shaft, the roller shaft is hingedly mounted on the revolution support plate along the circumferential direction with the intermediate shaft as the center, and the intermediate shaft is transmission-connected to the power output shaft of the power input mechanism; the rotation transmission mechanism includes a large gear fixedly mounted on the mounting seat with the rotating shaft as the axis center, and a small gear meshing with the large gear is arranged on the rotating shaft of the roller shaft; when the power input mechanism drives the intermediate shaft to rotate, the roller shaft is driven to revolve around the intermediate shaft through the revolution support plate, and the roller shaft is driven to rotate around its rotating axis through the meshing of the large gear and the small gear.

[0006] Furthermore, the large gear is mounted on the intermediate shaft via a bearing sleeve, and the ratio of the number of teeth of the small gear to the large gear is 20:73.

[0007] Furthermore, the hob is provided with a gradual depth along the revolution track direction of the workpiece, so as to realize the groove processing of gradually deepening the workpiece during the revolution of the workpiece.

[0008] Furthermore, smooth transitions are arranged at both ends of the hob.

[0009] Furthermore, the hob is movably mounted on the mounting seat via a hob adjustment mechanism, and the installation depth of the hob is adjusted via the hob adjustment mechanism, thereby achieving groove processing of different depths on the workpiece.

[0010] Furthermore, the hob adjustment mechanism includes a hob adjustment screw, which is threaded onto the mounting seat and tightly pressed against the hob. The relative distance between the hob and the central axis can be adjusted by rotating the hob adjustment screw.

[0011] Furthermore, a feeding power mechanism and a returning power mechanism are arranged above the mounting seat, and the feeding power mechanism is connected to the feeding port, and is used to push the workpiece to move in a direction parallel to the rotating axis and enter between the roller and the inner wall of the accommodating space, and a workpiece limiting device is arranged in the accommodating space, and is used to limit the moving position of the workpiece; the returning power mechanism is connected to the returning port, and is used to push the workpiece to exit the mounting seat.

[0012] Furthermore, the hob is arranged in an arc shape on the orbital trajectory of the workpiece moving from the cargo inlet to the cargo outlet; the mounting seat includes an upper seat, an intermediate ring and a lower seat, the cargo inlet is arranged on the upper seat, the workpiece limiting device is provided on the intermediate ring at a position corresponding to the motion trajectory of the workpiece from the cargo inlet to the cargo outlet, a return outlet is provided on the intermediate ring at a position corresponding to the cargo outlet, a return path is provided on the lower seat at a position corresponding to the return outlet, and the workpiece exits the mounting seat from the return outlet and the return path in sequence.

[0013] The beneficial effects of the present invention are: 1. The overall structure of the groove rolling mechanism is compact, and the three power sources of workpiece rotation, hob rotation and hob feed are combined into one, which greatly improves synchronization and simplifies debugging, thereby reducing equipment costs and improving production efficiency and quality stability; 2. While rolling the grooves, the product can also be transferred from the incoming workstation to the return workstation, eliminating the need for manipulator clamping and transfer; 3. Pure rolling is achieved between the workpiece and the hob through self-rotation, avoiding burrs and uneven groove depths. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a preferred embodiment of the present invention;

[0015] Figure 2 1 is a schematic diagram of the state of workpieces completed in the embodiment of the present invention;

[0016] Figure 3 is a schematic diagram of a workpiece in a groove rolling process according to an embodiment of the present invention;

[0017] Figure 4 A schematic diagram of a state in which the previous workpiece completes groove rolling processing, is withdrawn, and the next workpiece continues to be fed in according to an embodiment of the present invention.

[0018] Description of reference numerals:

[0019] 1. Upper seat; 2. Upper revolution plate; 3. Roller; 4. Workpiece; 5. Intermediate shaft; 6. Intermediate ring; 7. Small gear; 8. Lower seat; 9. Bottom cover; 10. Hob; 11. Hob adjustment screw; 12. Large gear; 13. Large bevel gear; 14. Small bevel gear; 15. Transmission shaft; 16. Incoming punch; 17. Return punch; 18. Lower revolution plate. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0021] The embodiment of the present invention is a rotary groove rolling mechanism for performing groove rolling processing on a columnar workpiece. Figure 1 A rotary groove rolling mechanism according to an embodiment of the present invention specifically comprises: a mounting seat, the mounting seat comprising an upper seat (1), an intermediate ring (6), a lower seat (8) and a bottom cover (8) connected in sequence, an intermediate shaft (5) being hinged at the center position of the upper seat (1) through a bearing, an upper revolution plate (2) and a lower revolution plate (18) being fixedly connected to the intermediate shaft (5), four roller shafts (3) arranged in pairs are arranged around the intermediate shaft (5) along the circumferential direction, two ends of the roller shaft (3) are respectively hinged on the upper revolution plate (2) and the lower revolution plate (18), a small gear (7) is installed at the lower end of the roller shaft (3), a large gear (12) is provided on the intermediate shaft (5) through a bearing sleeve, the large gear (12) is fixedly mounted on the lower seat (8), a transmission shaft (15) is supported in the lower seat (8) through a bearing, and the transmission shaft (15) is connected to the intermediate shaft (5) through the meshing transmission of a small bevel gear (14) and a large bevel gear (13). The upper seat (1) is provided with a goods inlet (19) and a goods return outlet (20).

[0022] The groove rolling process of a single workpiece (4) according to the present invention is as follows:

[0023] 1. The workpiece (4) is pushed by the feeding punch (16) and enters the interior of the upper seat (1) through the feeding port 19, and fits tightly between a pair of rollers (3) and the inner wall of the upper seat (1), thus completing the feeding;

[0024] 2. The transmission shaft (15) is connected to the power output shaft of the servo motor (not shown in the figure) to realize power input. The transmission shaft (15) drives the intermediate shaft (5) to rotate through the meshing of the small bevel gear (13) and the large bevel gear (14). The intermediate shaft (5) then drives the roller shaft (3) to rotate around the intermediate shaft (5), and the workpiece (4) also rotates around the intermediate shaft (5), which is the revolution motion of the workpiece (4). At the same time, since a small gear (7) is installed on the rotating shaft of the roller shaft (3), the small gear (7) meshes with the large gear (12), and the large gear (12) is fixedly connected to the lower seat (8), the roller shaft (3) is driven to rotate while revolving around the intermediate shaft (5) due to the meshing of the large gear (12) and the small gear (7), and the workpiece (4) also rotates accordingly. The roller cutter (10) is installed in an arc shape on the orbital track of the workpiece (4). When the workpiece (4) moves from the inlet (19) to the outlet (20), the workpiece (4) rotates to press a rolling groove along the axial direction when passing through the roller cutter (10). A limit baffle is provided on the intermediate ring (6) at a position corresponding to the movement track of the workpiece (4) from the inlet (19) to the outlet (20), a return outlet is provided on the intermediate ring (6) at a position corresponding to the outlet (20), and a return path is provided on the lower seat (8) at a position corresponding to the return outlet. After the rolling groove processing is completed, the workpiece (4) is pushed by the return punch (17) and exits the mounting seat through the return outlet and the return path in sequence to complete the discharge.

[0025] By matching the number of teeth of the pinion (7) and the large gear (12), the linear speed of the roller (3) and the linear speed of the workpiece (4) relative to the hob (10) are the same during the rotation of the workpiece (4), which is equivalent to pure rolling of the workpiece (4). In this way, on the one hand, the grooves produced by the roller are uniform and free of burrs, and on the other hand, the workpiece (4) is prevented from being scratched due to sliding friction. Figure 2 to Figure 4 It is a schematic diagram of the state of a workpiece (4) from feeding, groove rolling to discharging in an embodiment of the present invention.

[0026] A roller cutter adjusting screw (11) is also installed on the upper seat (1), and the roller cutter (10) is movably installed on the upper seat (1). One end of the roller cutter adjusting screw (11) abuts against the roller cutter (10), and the installation depth of the roller cutter (10) is adjusted by rotating the roller cutter adjusting screw (11) to perform roller groove processing of different depths.

[0027] The key protection point of the present invention is that the revolution and rotation of the workpiece (4) are realized through a power input source. During the rotation process, the workpiece (4) not only completes the groove rolling processing, but also can move from the incoming station to the outgoing station. It not only reduces the equipment investment and cost, improves the movement synchronization, but also simplifies the structure, increases the production efficiency, reduces the difficulty of debugging, and has good economic benefits.

[0028] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A rotary groove rolling mechanism, characterized in that: It comprises a power input mechanism and a mounting seat, wherein a storage space is arranged in the mounting seat, wherein the storage space comprises a rotating shaft, wherein a hob, a plurality of rollers arranged in pairs, a revolution transmission mechanism and a rotation transmission mechanism are arranged in the storage space; the power input mechanism drives the rollers to revolve around the rotating shaft through the revolution transmission mechanism, and the power input mechanism drives the rollers to rotate around their rotating shafts through the rotation transmission mechanism, and an inlet and a return port connected to the storage space are arranged on the mounting seat; after the workpiece enters the storage space through the inlet, it falls between a pair of rollers and the inner wall of the storage space, and while being driven by the rollers, it revolves around the rotating shaft and rotates around its own axis, and the hob is arranged on the revolution trajectory of the workpiece, and performs rolling groove processing on the workpiece during its movement from the inlet to the outlet; The hob is provided with a gradual depth along the revolution track direction of the workpiece, so as to realize the groove processing of gradually rolling deeper on the workpiece during the revolution process of the workpiece.

2. A rotary groove rolling mechanism according to claim 1, characterized in that: The revolution transmission mechanism includes an intermediate shaft hingedly mounted on the mounting seat, the intermediate shaft is arranged on the rotating shaft of the accommodating space, a revolution support plate is fixedly arranged on the intermediate shaft, the roller shaft is hingedly mounted on the revolution support plate along the circumferential direction with the intermediate shaft as the center, and the intermediate shaft is transmission-connected to the power output shaft of the power input mechanism; the rotation transmission mechanism includes a large gear fixedly mounted on the mounting seat with the rotating shaft as the axis, and a small gear meshing with the large gear is arranged on the rotating shaft of the roller shaft; when the power input mechanism drives the intermediate shaft to rotate, the roller shaft is driven to revolve around the intermediate shaft through the revolution support plate, and the roller shaft is driven to rotate around its rotating shaft through the meshing of the large gear and the small gear; The large gear is mounted on the intermediate shaft via a bearing sleeve, and the ratio of the number of teeth of the small gear to the large gear is 20:

73.

3. A rotary groove rolling mechanism according to claim 1, characterized in that: The two ends of the hob are provided with smooth transition.

4. A rotary groove rolling mechanism according to claim 3, characterized in that: The hob is movably mounted on the mounting seat through a hob adjustment mechanism, and the installation depth of the hob is adjusted through the hob adjustment mechanism, thereby realizing the processing of grooves of different depths on the workpiece.

5. A rotary groove rolling mechanism according to claim 4, characterized in that: The hob adjustment mechanism comprises a hob adjustment screw, which is threaded on the mounting seat and tightly abuts against the hob. The relative distance between the hob and the central axis can be adjusted by rotating the hob adjustment screw.

6. A rotary groove rolling mechanism according to claim 1, characterized in that: A feeding power mechanism and a returning power mechanism are arranged above the mounting seat. The feeding power mechanism is connected to the feeding port and is used to push the workpiece to move in a direction parallel to the rotating axis and enter between the roller and the inner wall of the accommodating space. A workpiece limiting device is arranged in the accommodating space to limit the moving position of the workpiece; the returning power mechanism is connected to the returning port and is used to push the workpiece to exit the mounting seat.

7. A rotary groove rolling mechanism according to claim 6, characterized in that: The hob is arranged in an arc shape on the orbital trajectory of the workpiece moving from the inlet to the outlet; the mounting seat includes an upper seat, an intermediate ring and a lower seat, the inlet is arranged on the upper seat, the workpiece limiting device is arranged at a position on the intermediate ring corresponding to the movement trajectory of the workpiece from the inlet to the outlet, a return outlet is arranged on the intermediate ring at a position corresponding to the outlet, and a return path is arranged on the lower seat at a position corresponding to the return outlet, and the workpiece exits the mounting seat from the return outlet and the return path in sequence.

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