Tooth pitch adjusting structure for gear machining

Abstract

The utility model discloses a pitch adjusting structure for gear machining, which relates to the technical field of gear machining and comprises a machine body and a limiting block, hydraulic cylinders are mounted on two sides of the machine body, a connecting frame is fixed on one side of each hydraulic cylinder, a motor is mounted on one side of each connecting frame, and a serrated roller is fixed at the output end of each motor. According to the tooth pitch adjusting structure for gear machining, a poking block is poked to drive a two-way threaded rod to rotate, the two-way threaded rod is in threaded transmission with two sets of threaded sleeves when rotating, the two sets of threaded sleeves are driven to be away from each other, and the two sets of threaded sleeves can drive a limiting block to move so that the limiting block can be attached to the inner side of a connecting rod frame; at the moment, when the connecting frame connected with the sawtooth roller accidentally retreats, the connecting frame can drive four sets of connecting rods on the connecting rod frame to rotate and fold through the connecting rods, however, due to limiting of the limiting blocks, the connecting rod frame cannot be folded, and the same connecting frame and the sawtooth roller cannot retreat.

Description

Technical Field

[0001] The utility model relates to the technical field of gear processing, in particular to a tooth pitch adjustment structure used for gear processing. Background Art

[0002] When processing gears, a gear hobbing machine is needed. The gear hobbing machine is the most widely used machine tool in gear processing. Its working principle is to use the relative movement between the hob and the workpiece to process the gear tooth shape by rolling. When processing gears that do not pass the diameter, the pitch adjustment structure is required to adjust the pitch of the hobbing cutter on the gear hobbing machine.

[0003] For example, the gear hobbing machine pitch adjustment structure with announcement number CN220574925U has the advantages of being able to collect the debris generated during the machining process and facilitating cleaning. It solves the problem that the debris generated during the machining process of the existing gear hobbing machine will be deposited on the workbench, causing great trouble for subsequent cleaning and also affecting the machining quality of the workpiece.

[0004] When the above patent adjusts the spacing of the gear hobbing cutters of the gear hobbing machine, the gear hobbing cutter is moved by the hydraulic cylinder and then the gear is processed. However, when the hydraulic cylinder fails, the gear hobbing cutter will move backward during processing and the gear cannot be processed effectively. Utility Model Content

[0005] The utility model aims to provide a pitch adjustment structure for gear processing, so as to solve the problem that the existing pitch adjustment structure for gear processing proposed in the above background technology is prone to failure after adjustment.

[0006] To achieve the above object, the utility model provides the following technical solution: a pitch adjustment structure for gear processing, comprising: a machine body and a limit block, hydraulic cylinders are installed on both sides of the machine body, a connecting frame is fixed on one side of the hydraulic cylinder, and a motor is installed on one side of the connecting frame.

[0007] A sawtooth roller is fixed to the output end of the motor, one end of the sawtooth roller is movably connected to a connecting frame through a rotating shaft, a bracket is arranged on the outer side of the connecting frame, and one side of the bracket is fixedly connected to the machine body.

[0008] Preferably, a connecting rod is fixed to the top of the connecting frame, and the top of the connecting rod is movably connected to a connecting rod frame through a rotating shaft. The connecting rod frame consists of four groups of connecting rods, and the connection between every two groups of connecting rods is movably connected through a rotating shaft. A slide groove is opened on the top of the body, and the slide groove is slidably connected to the connecting rod.

[0009] Preferably, a fixing block is fixed at the center of the top of the machine body, the interior of the fixing block is movably connected with a bidirectional threaded rod via a bearing, and the outer side of the bidirectional threaded rod is threadedly connected with a threaded sleeve.

[0010] Preferably, one end of the threaded sleeve is fixedly connected to a limiting block, the limiting block is arranged on the inner side of the connecting rod frame, and a toggle block is fixed to the middle part of the bidirectional threaded rod.

[0011] Preferably, the bottom of the connecting frame is fixedly connected to an extending frame, and the bottom of the extending frame is fixed with a plurality of groups of protrusions, and the plurality of groups of protrusions are equidistantly distributed.

[0012] Preferably, a rotating block is provided on one side of the protrusion, a knocking rod is movably connected to one side of the rotating block via a rotating shaft, and a tension spring is fixedly connected between the knocking rod and the rotating block.

[0013] Preferably, one side of the knocking rod is movably connected to a fixing seat via a rotating shaft, and one side of the fixing seat is fixedly connected to the machine body.

[0014] Compared with the prior art, the pitch adjustment structure for gear processing has the following beneficial effects: by toggling the toggle block, the bidirectional threaded rod and the two sets of threaded sleeves are driven to perform threaded transmission, and the two sets of threaded sleeves are driven to move away from each other. The two sets of threaded sleeves can drive the limit block to move so that it is close to the inner side of the connecting rod frame, and the connecting rod frame is used to limit the connecting frame and the sawtooth roller. When the two sets of connecting frames approach each other, the extension frame at the bottom of the connecting frame will move the rotating block through the protrusion, and the rotating block will drive the knocking rod to rotate. When the protrusion is out of contact with the rotating block, the knocking rod will reset under the action of gravity, thereby knocking the collecting chamber to cause it to vibrate. At this time, the waste chips that fall onto the inclined surface of the collecting chamber during the processing of the sawtooth roller will fall to the bottom, preventing the waste chips from staying on the slope of the collecting chamber.

[0015] 1. Gear hobbing machine is a kind of equipment for processing gears. When processing gears of different diameters, it is necessary to adjust the spacing of the sawtooth rollers in the gear hobbing machine through the pitch adjustment structure. The spacing of the two sets of sawtooth rollers can be adjusted by starting the hydraulic cylinder. After the adjustment is completed, in order to prevent the hydraulic cylinder from failing and causing the sawtooth roller to retreat, the bidirectional threaded rod is driven to rotate by turning the toggle block. When the bidirectional threaded rod rotates, it will perform threaded transmission with the two sets of threaded sleeves, driving the two sets of threaded sleeves away from each other. The two sets of threaded sleeves can drive the limit block to move so that it is close to the inner side of the connecting rod frame. At this time, when the connecting frame connected to the sawtooth roller retreats unexpectedly, the connecting frame will drive the four sets of connecting rods on the connecting rod frame to rotate and fold through the connecting rod. However, due to the limitation of the limit block, the connecting rod frame will not be able to complete the folding, and the connecting frame and the sawtooth roller will also be unable to retreat. In this way, the above operation can facilitate the safety limit of the adjusted sawtooth roller to prevent it from moving accidentally.

[0016] 2. A gear hobbing machine is a device for processing gears. When processing gears of different diameters, the spacing of the serrated rollers in the gear hobbing machine needs to be adjusted through a pitch adjustment structure. When the two sets of connecting frames are close to each other, the extension frame at the bottom of the connecting frame will move the rotating block through the protrusion, and the rotating block will drive the knocking rod to rotate around the rotating shaft on one side of the fixed seat. Since the rotating axis of the knocking rod is close to the rotating block, the top of the knocking rod only needs to rotate a short distance, and the bottom will rotate a larger distance. When the protrusion is out of contact with the rotating block, the knocking rod will reset under the action of gravity, thereby knocking the collecting chamber to cause it to vibrate. At this time, the waste chips that fall onto the inclined surface of the collecting chamber during the processing of the serrated roller will fall to the bottom to prevent the waste chips from staying on the slope of the collecting chamber. In this way, the above operation can facilitate the removal of waste on the slope of the collecting chamber in the gear hobbing machine when the pitch is adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a rear-view stereoscopic schematic diagram of the utility model;

[0018] Figure 2 This is a main perspective schematic diagram of the utility model;

[0019] Figure 3 It is a three-dimensional cross-sectional schematic diagram of the utility model;

[0020] Figure 4 It is a three-dimensional schematic diagram of the connecting rod frame of the utility model;

[0021] Figure 5 It is an enlarged schematic diagram of A of the present utility model.

[0022] In the figure: 1. body; 2. hydraulic cylinder; 3. connecting frame; 4. motor; 5. sawtooth roller; 6. bracket; 7. collecting chamber; 8. connecting rod; 9. connecting rod frame; 10. fixing block; 11. two-way threaded rod; 12. threaded sleeve; 13. limit block; 14. toggle block; 15. extension frame; 16. protrusion; 17. rotating block; 18. tension spring; 19. knocking rod; 20. fixing seat. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-Figure 4The utility model provides a technical solution: a pitch adjustment structure for gear processing, comprising: a machine body 1 and a limit block 13, a hydraulic cylinder 2 is installed on both sides of the machine body 1, a connecting frame 3 is fixed on one side of the hydraulic cylinder 2, and a motor 4 is installed on one side of the connecting frame 3,

[0025] A sawtooth roller 5 is fixed to the output end of the motor 4, one end of the sawtooth roller 5 is movably connected to the connecting frame 3 through a rotating shaft, a bracket 6 is arranged on the outer side of the connecting frame 3, and one side of the bracket 6 is fixedly connected to the body 1; a connecting rod 8 is fixed to the top of the connecting frame 3, and the top of the connecting rod 8 is movably connected to a connecting rod frame 9 through a rotating shaft, the connecting rod frame 9 is composed of four groups of connecting rods, and the connection between every two groups of connecting rods is movably connected through a rotating shaft, a slide groove is provided on the top of the body 1, and the slide groove is slidably connected to the connecting rod 8; a fixed block 10 is fixed at the center of the top of the body 1, and a two-way threaded rod 11 is movably connected to the inside of the fixed block 10 through a bearing, and a threaded sleeve 12 is threadedly connected to the outer side of the two-way threaded rod 11; one end of the threaded sleeve 12 is fixedly connected to a limiting block 13, and the limiting block 13 is arranged on the inner side of the connecting rod frame 9, and a toggle block 14 is fixed to the middle part of the two-way threaded rod 11, the two-way threaded rod 11 and the threaded sleeve 12 constitute a threaded transmission structure, and the connecting rod 8 and the body 1 constitute a sliding structure.

[0026] In specific implementation, the gear hobbing machine is a device for processing gears. When processing gears of different diameters, the spacing of the sawtooth rollers 5 in the gear hobbing machine needs to be adjusted through the pitch adjustment structure. The spacing of the two sets of sawtooth rollers 5 can be adjusted by starting the hydraulic cylinder 2. After the adjustment is completed, in order to prevent the hydraulic cylinder 2 from failing and causing the sawtooth rollers 5 to retreat, the bidirectional threaded rod 11 is driven to rotate by toggling the toggle block 14. When the bidirectional threaded rod 11 rotates, it will perform threaded transmission with the two sets of threaded sleeves 12, driving the two sets of threaded sleeves 12 away from each other. The two sets of threaded sleeves 12 can drive the limit block 13 to move so that it is close to the connecting rod. On the inner side of the rod frame 9, since the bottom of the connecting rod frame 9 is close to the top of the body 1, the limit block 13 will not rotate. When the limit block 13 is close to the connecting rod frame 9, it can be limited. At this time, when the connecting frame 3 connected to the sawtooth roller 5 accidentally retracts, the connecting frame 3 will drive the four groups of connecting rods on the connecting rod frame 9 to rotate and fold through the connecting rod 8. However, due to the limitation of the limit block 13, the connecting rod frame 9 will not be able to complete the folding, and the connecting frame 3 and the sawtooth roller 5 will not be able to retract. In this way, the above operation can facilitate the safety limit of the adjusted sawtooth roller 5 to prevent it from accidentally moving.

[0027] See also Figure 2 , Figure 3 and Figure 5The bottom of the connecting frame 3 is fixedly connected to an extension frame 15, and a plurality of groups of protrusions 16 are fixed to the bottom of the extension frame 15, and the plurality of groups of protrusions 16 are equidistantly distributed; a rotating block 17 is provided on one side of the protrusion 16, and a knocking rod 19 is movably connected to one side of the rotating block 17 through a rotating shaft, and a tension spring 18 is fixedly connected between the knocking rod 19 and the rotating block 17; one side of the knocking rod 19 is movably connected to a fixed seat 20 through a rotating shaft, and one side of the fixed seat 20 is fixedly connected to the body 1, and the knocking rod 19 forms a rotating structure with the fixed seat 20 through the rotating shaft.

[0028] In specific implementation, the gear hobbing machine is a device for processing gears. When processing gears of different diameters, the spacing of the sawtooth rollers 5 in the gear hobbing machine needs to be adjusted through the pitch adjustment structure. When the two sets of connecting frames 3 are close to each other, the extension frame 15 at the bottom of the connecting frame 3 will move the rotating block 17 through the protrusion 16, and the rotating block 17 will drive the knocking rod 19 to rotate around the rotating shaft on one side of the fixed seat 20. Since the rotation axis of the knocking rod 19 is close to the rotating block 17, the top of the knocking rod 19 only needs to rotate a short distance, and the bottom will rotate a larger distance. When the protrusion 16 is out of contact with the rotating block 17, the knocking rod 19 is under the action of gravity. The bottom will be reset, thereby knocking the collecting chamber 7 to make it vibrate. At this time, the waste chips that fall onto the inclined surface of the collecting chamber 7 during the processing of the sawtooth roller 5 will fall to the bottom to prevent the waste chips from staying on the slope of the collecting chamber 7. When the two sets of connecting frames 3 move away from each other, the protrusion 16 will contact the rotating block 17 again, but at this time the rotating block 17 will rotate and pull the tension spring 18 to extend, and the knocking rod 19 will not move. When the protrusion 16 is out of contact with the rotating block 17, the tension spring 18 will be reset and pull the rotating block 17 to reset. In this way, the above operation can facilitate the removal of waste on the slope of the collecting chamber 7 in the gear hobbing machine when the pitch is adjusted.

[0029] To sum up: when using the pitch adjustment structure for gear processing, first place the workpiece on the vertical rod in the machine body 1, then start the hydraulic cylinder 2 to drive the connecting frame 3 and the serrated roller 5 to move, and adjust the distance between the two. After the adjustment is completed, the motor 4 can be started to drive the serrated roller 5 to rotate to process the workpiece. This is the characteristic of the pitch adjustment structure for gear processing. The content not described in detail in this description belongs to the existing technology known to professional and technical personnel in this field.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pitch adjustment structure for gear processing, comprising: The machine body (1) and the limit block (13) are characterized in that hydraulic cylinders (2) are installed on both sides of the machine body (1), a connecting frame (3) is fixed on one side of the hydraulic cylinder (2), and a motor (4) is installed on one side of the connecting frame (3). A sawtooth roller (5) is fixed to the output end of the motor (4), one end of the sawtooth roller (5) is movably connected to the connecting frame (3) via a rotating shaft, a bracket (6) is arranged on the outside of the connecting frame (3), and one side of the bracket (6) is fixedly connected to the machine body (1); A fixing block (10) is fixed at the center of the top of the machine body (1), a bidirectional threaded rod (11) is movably connected to the inside of the fixing block (10) via a bearing, and a threaded sleeve (12) is threadedly connected to the outside of the bidirectional threaded rod (11); One end of the threaded sleeve (12) is fixedly connected to a limit block (13), the limit block (13) is arranged on the inner side of the connecting rod frame (9), and a toggle block (14) is fixed in the middle of the bidirectional threaded rod (11).

2. The pitch adjustment structure for gear processing according to claim 1, characterized in that: A connecting rod (8) is fixed on the top of the connecting frame (3), and the top of the connecting rod (8) is movably connected to a connecting rod frame (9) via a rotating shaft. The connecting rod frame (9) is composed of four groups of connecting rods, and the connection between each two groups of connecting rods is movably connected via a rotating shaft. A sliding groove is provided on the top of the body (1), and the sliding groove is slidably connected to the connecting rod (8).

3. The pitch adjustment structure for gear machining according to claim 1, characterized in that: The bottom of the connecting frame (3) is fixedly connected to an extension frame (15), and the bottom of the extension frame (15) is fixed with a plurality of groups of protrusions (16), and the plurality of groups of protrusions (16) are distributed at equal distances.

4. The pitch adjustment structure for gear machining according to claim 3, characterized in that: A rotating block (17) is provided on one side of the protrusion (16); a knocking rod (19) is movably connected to one side of the rotating block (17) via a rotating shaft; and a tension spring (18) is fixedly connected between the knocking rod (19) and the rotating block (17).

5. The pitch adjustment structure for gear machining according to claim 4, characterized in that: One side of the knocking rod (19) is movably connected to a fixing seat (20) via a rotating shaft, and one side of the fixing seat (20) is fixedly connected to the machine body (1).

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