Plastic gear hobbing clamp

Abstract

The utility model discloses a plastic gear hobbing clamp, and belongs to the technical field of hobbing clamps. In order to solve the problem that an existing product is complex in structure, according to the technical scheme, the clamp comprises a clamp body, a plurality of circular grooves are formed in the clamp body, spiral pieces are arranged at the bottoms of the circular grooves, a sealing mechanism is arranged on the clamp body, and the sealing mechanism comprises a first spring column fixedly connected to the interior of the clamp body. By arranging the sealing mechanism, a good sealing effect can be achieved on a spiral piece on the clamp, the spiral piece is prevented from being exposed for a long time and making contact with outside air, the spiral piece can be prevented from rusting to a certain degree, and workers can conveniently screw the spiral piece; lubricating oil is automatically added to the spiral piece, screwing by workers is more convenient, meanwhile, the workers do not need to manually add the lubricating oil, and time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of gear hobbing fixtures, in particular to a plastic gear gear hobbing fixture. Background Art

[0002] The design of gear hobbing fixtures is complex and many reasonable designs are possible for a single workpiece. It is recommended that the gear hobbing fixture form an integral part of the manufacturing process and is required to hold the workpiece in the required position. Gear hobbing fixture design should focus on inhibiting unnecessary movement of the workpiece under the action of cutting forces. Gear hobbing fixtures are usually designed for specific operations in machining specific gear workpieces and are individually designed and manufactured. Adding a clamping device as close to the pitch line as possible can increase the cutting speed of the gear by increasing the rigidity of the gear hobbing fixture. Reducing the amount of clearance required between the collet diameter and the relaxed state of the collet can reduce costs by extending the life of the gear hobbing fixture collet. There are many types of gear hobbing fixtures, including manual pressure hobbing fixtures.

[0003] However, during the use of the existing manual pressurized gear hobbing fixture, the screwing parts are exposed to the air. After long-term exposure to the workshop environment, the surface of the screwing parts will rust, making it difficult to screw. At this time, the staff needs to manually add lubricating oil, which is time-consuming and laborious.

[0004] Therefore, those skilled in the art provide a plastic gear hobbing fixture to solve the problems raised in the above background technology. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, an embodiment of the utility model provides a plastic gear hobbing clamp. By setting a closing mechanism, the spiral parts on the clamp can be well sealed to avoid long-term exposure of the spiral parts to the outside air, which can prevent the spiral parts from rusting to a certain extent and facilitate the staff to twist the spiral parts. Secondly, by setting a movable mechanism, lubricating oil can be automatically added to the spiral parts during the twisting process, which is more convenient for the staff to twist. At the same time, there is no need for the staff to manually add lubricating oil, which saves time and effort, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A plastic gear hobbing fixture comprises a fixture body, wherein a plurality of circular grooves are formed on the fixture body, a spiral member is provided at the bottom of the circular groove, a closing mechanism is provided on the fixture body, the closing mechanism comprises a first spring column fixedly connected to the inside of the fixture body, a first groove connected to the circular groove is also formed on the fixture body, the first spring column passes through the first groove, one end of the first spring column is fixedly connected to a first semicircular plate, and the first semicircular plate is located inside the circular groove.

[0008] As a further solution of the utility model, the closing mechanism also includes a second groove opened on the clamp body and connected to the circular groove, a second semicircular plate is slidably connected to the second groove, and the first spring column and the second semicircular plate are connected by an L-shaped rod.

[0009] As a further solution of the utility model, the closing mechanism is provided in multiple groups, which are symmetrically distributed on both sides of the circular groove in pairs, and the circular groove will be completely closed when two of the second semicircular plates are in contact.

[0010] As a further solution of the utility model, a movable mechanism is arranged inside the second semicircular plate, and the movable mechanism includes a second spring column fixedly connected to the inside of the second semicircular plate, and the second spring column penetrates to the outside of the second semicircular plate and is fixedly connected to a magnet.

[0011] As a further solution of the utility model, the movable mechanism also includes a connecting rod fixedly connected to the second spring column, the lower end of the connecting rod is fixedly connected to a sealing strip, the lower end of the second semicircular plate is provided with a drop opening, and the sealing strip completely closes the drop opening.

[0012] As a further solution of the utility model, the magnets on the two second semicircular plates are adjacent to each other, and the adjacent surfaces of the two magnets are opposite magnetic poles.

[0013] As a further solution of the utility model, a limiting column is fixedly connected to the center of the front end of the clamp body, and a sliding groove is opened at the front end of the clamp body, and a sliding block is slidably connected to the sliding groove.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] By setting up a closing mechanism, the spiral parts on the clamp can be well sealed, avoiding the spiral parts from being exposed to the outside air for a long time, preventing the spiral parts from rusting to a certain extent, and making it easier for the staff to twist the spiral parts. Secondly, by setting up a movable mechanism, lubricating oil can be automatically added to the spiral parts during the twisting process, which is more convenient for the staff to twist. At the same time, the staff does not need to manually add lubricating oil, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of a plastic gear hobbing fixture;

[0017] Figure 2 for Figure 1 A schematic diagram of a partial cross-sectional structure;

[0018] Figure 3 for Figure 2A schematic diagram of the enlarged structure at point A;

[0019] Figure 4 for Figure 3 Schematic diagram of the structure when the second semicircular plate moves.

[0020] In the figure: 1. clamp body; 2. slide groove; 3. slider; 4. limit column; 5. circular groove; 6. screw; 7. first semicircular plate; 8. first spring column; 9. L-shaped rod; 10. second semicircular plate; 11. magnet; 12. second spring column; 13. connecting rod; 14. sealing strip; 15. drop mouth; 16. first groove; 17. second groove. DETAILED DESCRIPTION

[0021] See also Figures 1 to 4 In an embodiment of the utility model, a plastic gear hobbing fixture comprises a fixture body 1, a plurality of slide grooves 2 are provided at the front end of the fixture body 1, a slider 3 is slidably connected inside each slide groove 2, a limiting column 4 is fixedly connected at the center of the front end of the fixture body 1, the limiting column 4 is used to embed the hobbing gear to achieve connection and installation, a circular groove 5 is provided on the outer wall of the fixture body 1, a spiral member 6 is provided at the bottom of the circular groove 5, the spiral member 6 is rotated by a tool to move the slider 3 along the slide groove 2, so as to achieve the extrusion and fixation of the hobbing gear on the limiting column 4, and the installation of the hobbing gear is completed by manual pressure.

[0022] A first spring column 8 is fixedly connected to the inside of the clamp body 1, and one end of the first spring column 8 is fixedly connected to the first semicircular plate 7. A first groove 16 connected to the circular groove 5 is opened inside the clamp body 1. The first spring column 8 passes through the first groove 16. The first semicircular plate 7 is located in the circular groove 5. The size of the first groove 16 is consistent with the size of the first semicircular plate 7, and the first semicircular plate 7 can move inside the first groove 16.

[0023] A second groove 17 connected to the circular groove 5 is provided inside the clamp body 1, and a second semicircular plate 10 is slidably connected inside the second groove 17. The second semicircular plate 10 is hollow in design, and lubricating oil is placed inside it. The second semicircular plate 10 is connected to the outside through a soft tube so that lubricating oil can be added. The two second semicircular plates 10 are used in combination to close the circular groove 5 to prevent debris from entering. The first spring column 8 and the second semicircular plate 10 are connected by an L-shaped rod 9.

[0024] A second spring column 12 is fixedly connected to the inside of the second semicircular plate 10, and the second spring column 12 penetrates to the outside of the second semicircular plate 10 and is fixedly connected to the magnet 11. A connecting rod 13 is fixedly connected to the second spring column 12, and a sealing strip 14 is fixedly connected to the lower end of the connecting rod 13. A drop-out opening 15 is opened at the lower end of the second semicircular plate 10, and the drop-out opening 15 is used to discharge lubricant, and the sealing strip 14 is used to completely block the drop-out opening 15.

[0025] The working principle of the utility model is as follows: the gear hobbing fixture completes the fixation of the gear hobbing by manual pressure. When the gear hobbing needs to be fixed on the fixture, the gear hobbing can be first inserted into the limiting column 4, and then the tool can be inserted into the circular groove 5. During the process of the tool entering the circular groove 5, the first semicircular plate 7 will be squeezed. When the first semicircular plate 7 is squeezed, it will move along the first groove 16, and at the same time, it will squeeze the first spring column 8. The first spring column 8 will drive the second semicircular plate 10 to start moving along the second groove 17 through the L-shaped rod 9. When the second semicircular plate 10 just starts to move, the two magnets 11 on the two second semicircular plates 10 are still in the adsorption state, and the internal second spring column 12 will stretch. The connecting rod 13 drives the sealing strip 14 to move. When the sealing strip 14 moves, the drop-out opening 15 is opened, and the lubricating oil falls onto the spiral member 6 to lubricate it, which can effectively prevent it from rusting and facilitate twisting. When the first semicircular plate 7 is completely moved out of the circular groove 5, the two second semicircular plates 10 are also completely moved out of the circular groove 5, and no longer hinder the movement of the tool. At this time, under the action of the second spring column 12, the two magnets 11 are separated, and the second spring column 12 returns to its original position, so that the sealing strip 14 closes the drop-out opening 15 again, and then the tool can twist the spiral member 6, so that the slider 3 moves along the slide groove 2, and the slider 3 squeezes the limit column 4 to fix the rolling gear.

[0026] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A plastic gear hobbing fixture, comprising a fixture body (1), wherein a plurality of circular grooves (5) are formed on the fixture body (1), and a spiral member (6) is disposed at the bottom of the circular groove (5), wherein: The clamp body (1) is provided with a closing mechanism, the closing mechanism comprising a first spring column (8) fixedly connected to the inside of the clamp body (1); the clamp body (1) is also provided with a first groove (16) connected to the circular groove (5); the first spring column (8) passes through the first groove (16); one end of the first spring column (8) is fixedly connected to a first semicircular plate (7); the first semicircular plate (7) is located inside the circular groove (5).

2. A plastic gear hobbing fixture according to claim 1, characterized in that: The closing mechanism further comprises a second groove (17) formed on the clamp body (1) and connected to the circular groove (5); a second semicircular plate (10) is slidably connected to the second groove (17); and the first spring column (8) and the second semicircular plate (10) are connected via an L-shaped rod (9).

3. A plastic gear hobbing fixture according to claim 2, characterized in that: The sealing mechanism is provided in multiple groups, which are symmetrically distributed in pairs on both sides of the circular groove (5), and the circular groove (5) is completely sealed when two of the second semicircular plates (10) are in contact.

4. A plastic gear hobbing fixture according to claim 2, characterized in that: A movable mechanism is arranged inside the second semicircular plate (10), and the movable mechanism comprises a second spring column (12) fixedly connected to the inside of the second semicircular plate (10), and the second spring column (12) penetrates to the outside of the second semicircular plate (10) and is fixedly connected to a magnet (11).

5. A plastic gear hobbing fixture according to claim 4, characterized in that: The movable mechanism further comprises a connecting rod (13) fixedly connected to the second spring column (12); a sealing strip (14) is fixedly connected to the lower end of the connecting rod (13); a drop opening (15) is formed at the lower end of the second semicircular plate (10); and the sealing strip (14) completely closes the drop opening (15).

6. A plastic gear hobbing fixture according to claim 4, characterized in that: The magnets (11) on the two second semicircular plates (10) are adjacent to each other, and the adjacent surfaces of the two magnets (11) are opposite magnetic poles.

7. A plastic gear hobbing fixture according to claim 6, characterized in that: A limiting column (4) is fixedly connected to the center of the front end of the clamp body (1), and a sliding groove (2) is provided at the front end of the clamp body (1), and a sliding block (3) is slidably connected to the sliding groove (2).

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