Hob bar locking structure

Abstract

The utility model discloses a hobbing cutter bar locking structure, which relates to the technical field of hobbing machine cutter bars and comprises a hobbing machine spindle box and a hobbing cutter bar, a front cover is mounted at the front end of the hobbing machine spindle box through a bolt, a rear cover is mounted at the rear end of the hobbing machine spindle box through a bolt, and a driving spindle is mounted in the hobbing machine spindle box. A support is arranged on the outer wall of one end of the driving main shaft, two locking assemblies are symmetrically installed on the inner side of the support, an unlocking assembly is installed on the inner wall of the gear hobbing machine main shaft box, an inserting hole is formed in one end of the driving main shaft, one end of the hob rod is inserted into the inserting hole, and two inserting grooves are symmetrically formed in the outer side of the end, located in the inserting hole, of the hob rod. A hob rod supporting sleeve is fixed to the outer wall of the front cover, and the hob rod penetrates through the hob rod supporting sleeve and the front cover. According to the utility model, the support, the locking assembly and the unlocking assembly are matched for use, so that the hob rod can be quickly mounted on the driving main shaft, the hob rod can be quickly dismounted and replaced, the operation is convenient and fast, and the mounting precision and the mounting efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gear hobbing machine tool bars, in particular to a gear hobbing tool bar locking structure. Background Art

[0002] Currently, gear hobbing machines are the most widely used type of gear processing machine tools. They can cut spur and helical cylindrical gears, as well as worm gears and sprockets. These gear hobbing machines use a generating method to produce spur, helical, and herringbone gears, as well as worm gears. Using specialized hobbing cutters, these machines can also process workpieces with various special tooth shapes, such as splines and sprockets.

[0003] The hob rod of a traditional gear hobbing machine is generally locked by a mechanical pull rod, which requires manual operation to replace the hob rod; the operation is inconvenient and affects the installation accuracy. Therefore, a hob rod locking structure is provided. Utility Model Content

[0004] In response to the deficiencies of the existing technology, the utility model provides a hob rod locking structure. Through the coordinated use of the provided bracket, locking assembly and unlocking assembly, the hob rod can be quickly installed on the drive spindle, and can be quickly disassembled and replaced. The operation is convenient, the installation accuracy and efficiency are improved, and the deficiencies of the existing technology are overcome.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A hob rod locking structure includes a gear hobbing machine spindle box and a hob rod, wherein a front cover is mounted on the front end of the gear hobbing machine spindle box by bolts, and a rear cover is mounted on the rear end of the gear hobbing machine spindle box by bolts, a driving spindle is mounted inside the gear hobbing machine spindle box, an outer wall of one end of the driving spindle is provided with a bracket, two locking assemblies are symmetrically mounted on the inner side of the bracket, and an unlocking assembly is mounted on the inner wall of the gear hobbing machine spindle box;

[0007] One end of the driving main shaft is provided with a socket, one end of the hob rod is plugged into the socket, and two slots are symmetrically provided on the outer side of one end of the hob rod which is located at the socket.

[0008] Through the above scheme, by using the provided bracket, locking assembly and unlocking assembly in combination, the hob rod can be quickly installed on the drive spindle, and can be quickly disassembled and replaced, which is convenient to operate and improves the installation accuracy and efficiency.

[0009] Preferably, a hob rod support sleeve is fixed to the outer wall of the front cover, and the hob rod passes through the hob rod support sleeve and the front cover.

[0010] Preferably, a drive motor is installed on the outer wall of the rear cover, and the output end of the drive motor extends to the interior of the gear hobbing machine spindle box and is connected to the drive spindle through a coupling.

[0011] Preferably, the bracket includes two support rods symmetrically welded to the outer wall of the driving main shaft, and fixing rings are welded to the ends of the two support rods.

[0012] Preferably, the locking assembly includes a T-rod slidably inserted on the fixed ring, a locking block is connected to the end of the T-rod facing the driving main shaft, the part of the T-rod located between the locking block and the fixed ring is sleeved with a first spring, and two limiting holes are symmetrically opened on the end of the driving main shaft, and the two locking blocks are respectively slidably inserted in the two limiting holes.

[0013] Preferably, the unlocking assembly includes a mounting ring mounted on the inner wall of the gear hobbing machine spindle box by bolts, and electromagnets are mounted on the mounting ring at equal distances.

[0014] Preferably, the mounting ring is located outside the fixing ring, and a gap is provided between the mounting ring and the fixing ring.

[0015] Preferably, a second spring is fixed in the socket, and the second spring abuts against one end of the hob rod located in the socket.

[0016] The beneficial effects of the utility model are:

[0017] By using the provided bracket, locking assembly and unlocking assembly in coordination, the hob rod can be quickly installed on the drive spindle, and can be quickly disassembled and replaced, which is convenient to operate and improves installation accuracy and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure from a first perspective of a hob rod locking structure proposed by the utility model.

[0019] Figure 2 This is a schematic diagram of the third perspective structure of a hob rod locking structure proposed by the present invention.

[0020] Figure 3 This is a partial cross-sectional three-dimensional structural diagram of a hob rod locking structure proposed by the utility model.

[0021] Figure 4 A hob rod locking structure proposed by the utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0022] In the figure: 1. Gear hobbing machine spindle box; 2. Front cover; 3. Hob rod; 4. Hob rod support sleeve; 5. T-bar; 6. Rear cover; 7. Drive motor; 8. Mounting ring; 9. Retaining ring; 10. Drive spindle; 11. Socket; 12. Second spring; 13. Slot; 14. Limit hole; 15. Lock block; 16. First spring; 17. Electromagnet; 18. Support rod. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] Example 1, with reference to Figure 1-4 A hob rod locking structure includes a gear hobbing machine spindle box 1 and a hob rod 3. The front end of the gear hobbing machine spindle box 1 is installed with a front cover 2 by bolts, and the rear end of the gear hobbing machine spindle box 1 is installed with a rear cover 6 by bolts. A driving spindle 10 is installed inside the gear hobbing machine spindle box 1, and a bracket is provided on the outer wall of one end of the driving spindle 10. Two locking components are symmetrically installed on the inner side of the bracket. An unlocking component is installed on the inner wall of the gear hobbing machine spindle box 1;

[0025] One end of the driving spindle 10 is provided with a socket 11, one end of the hob rod 3 is inserted into the socket 11, and two slots 13 are symmetrically provided on the outer side of one end of the hob rod 3 located in the socket 11. A second spring 12 is fixed in the socket 11, and the second spring 12 abuts against the end of the hob rod 3 located in the socket 11;

[0026] A hob rod support sleeve 4 is fixed to the outer wall of the front cover 2, and the hob rod 3 passes through the hob rod support sleeve 4 and the front cover 2. A drive motor 7 is installed on the outer wall of the rear cover 6. The output end of the drive motor 7 extends to the interior of the hobbing machine spindle box 1 and is connected to the drive spindle 10 through a coupling.

[0027] The bracket includes two support rods 18 symmetrically welded to the outer wall of the driving main shaft 10, and the ends of the two support rods 18 are welded with fixing rings 9;

[0028] The locking assembly includes a T-shaped rod 5 slidably inserted into the fixing ring 9. A locking block 15 is connected to the end of the T-shaped rod 5 facing the drive spindle 10. The portion of the T-shaped rod 5 located between the locking block 15 and the fixing ring 9 is covered with a first spring 16. Two limiting holes 14 are symmetrically formed on the end of the drive spindle 10. The two locking blocks 15 are slidably inserted into the two limiting holes 14 respectively.

[0029] The unlocking assembly includes a mounting ring 8 mounted on the inner wall of the gear hobbing machine spindle box 1 by bolts, and electromagnets 17 are installed on the mounting ring 8 at equal distances. The mounting ring 8 is located on the outside of the fixing ring 9, and a gap is set between the mounting ring 8 and the fixing ring 9.

[0030] Working principle: The electromagnet 17 is energized through the control switch on the gear hobbing machine spindle box 1, so that the electromagnet 17 generates magnetism to adsorb the T-bar 5, so that the end of the locking block 15 located in the socket 11 enters the limit hole 14, and at the same time the locking block 15 compresses the first spring 16, and inserts one end of the hob rod 3 from the hob rod support sleeve 4 into the socket 11 of the drive spindle 10 inside the gear hobbing machine spindle box 1, and compresses the second spring 12 before de-energizing the electromagnet 17. The T-bar 5 loses the adsorption effect of the electromagnet 17, and under the rebound effect of the first spring 16, the locking block 15 is pushed to be inserted into the slot 13 of the hob rod 3, thereby realizing the rapid installation of the hob rod 3. When the hob rod 3 needs to be disassembled, the electromagnet 17 is energized to disengage the locking block 15 from the hob rod 3, and the hob rod 3 can be removed.

[0031] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited to them. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

Claims

1. A hob rod locking structure, comprising a gear hobbing machine spindle box (1) and a hob rod (3), characterized in that: The front end of the gear hobbing machine spindle box (1) is installed with a front cover (2) by means of bolts, the rear end of the gear hobbing machine spindle box (1) is installed with a rear cover (6) by means of bolts, a driving spindle (10) is installed inside the gear hobbing machine spindle box (1), a bracket is provided on the outer wall of one end of the driving spindle (10), two locking assemblies are symmetrically installed on the inner side of the bracket, and an unlocking assembly is installed on the inner wall of the gear hobbing machine spindle box (1); One end of the driving main shaft (10) is provided with a socket (11), one end of the hob rod (3) is inserted into the socket (11), and two slots (13) are symmetrically provided on the outer side of one end of the hob rod (3) located at the socket (11).

2. A hob rod locking structure according to claim 1, characterized in that: A roller cutter rod support sleeve (4) is fixed to the outer wall of the front cover (2), and the roller cutter rod (3) passes through the roller cutter rod support sleeve (4) and the front cover (2).

3. A hob rod locking structure according to claim 2, characterized in that: A driving motor (7) is installed on the outer wall of the rear cover (6); the output end of the driving motor (7) extends to the interior of the gear hobbing machine spindle box (1) and is connected to the driving spindle (10) through a coupling.

4. The hob rod locking structure according to claim 1, characterized in that: The bracket comprises two support rods (18) symmetrically welded to the outer wall of the driving main shaft (10), and fixing rings (9) are welded to the ends of the two support rods (18).

5. The hob rod locking structure according to claim 4, characterized in that: The locking assembly comprises a T-shaped rod (5) slidably inserted on a fixing ring (9), one end of the T-shaped rod (5) facing the driving main shaft (10) is connected to a locking block (15), a portion of the T-shaped rod (5) located between the locking block (15) and the fixing ring (9) is sleeved with a first spring (16), and two limiting holes (14) are symmetrically provided on the end of the driving main shaft (10), and the two locking blocks (15) are respectively slidably inserted in the two limiting holes (14).

6. A hob rod locking structure according to claim 5, characterized in that: The unlocking assembly comprises a mounting ring (8) mounted on the inner wall of a gear hobbing machine spindle box (1) by means of bolts, and electromagnets (17) are mounted on the mounting ring (8) at equal distances.

7. A hob rod locking structure according to claim 6, characterized in that: The mounting ring (8) is located outside the fixing ring (9), and a gap is provided between the mounting ring (8) and the fixing ring (9).

8. The hob rod locking structure according to claim 1, characterized in that: A second spring (12) is fixed in the insertion hole (11), and the second spring (12) abuts against one end of the hob rod (3) located in the insertion hole (11).

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