CN215879972U

CN215879972U - Positioning fixture for gear drilling

Info

Publication number: CN215879972U
Application number: CN202121178404.1U
Authority: CN
Inventors: 王景; 王斌; 吴卓
Original assignee: Shaanxi Fast Gear Co Ltd
Current assignee: Shaanxi Fast Gear Co Ltd
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2022-02-22
Anticipated expiration: 2031-05-28

Abstract

The utility model discloses a positioning fixture for gear drilling, which comprises a base, wherein the base comprises a first mounting section and a second mounting section which are transversely arranged from front to back in a connecting manner, a first mounting hole is formed in the first mounting section, a mounting shaft is rotatably arranged in the first mounting hole, a mounting part is arranged at the top end of the mounting shaft, a second mounting hole is formed in the side wall of the mounting part, a limiting mechanism is arranged in the second mounting hole, and the limiting mechanism is used for being clamped into a gear tooth groove to be machined so as to limit the rotation of the gear to be machined. The positioning clamp is arranged on the index plate, and the fastening bolts connecting the base and the index plate can rotate 360 degrees before being screwed, so that the bolts can be screwed after the base is rotated to determine the angle when clamping different parts, and the positioning clamp is suitable for parts with different sizes.

Description

Positioning fixture for gear drilling

Technical Field

The utility model relates to the technical field of tool fixtures, in particular to a positioning fixture for gear drilling.

Background

In order to prolong the service life of the gearbox, the gearbox is generally required to be cooled and radiated and subjected to abrasion reduction treatment, and part of gears of the gearbox are required to be lubricated by oil during working. The most common method in the prior art is to uniformly distribute index drilling oil holes from the tooth root of the tooth groove center of the gear to be processed to an inner hole according to the tooth number so as to guide the engine oil to pass through the surface of the lubricating tooth part. Because the gear meshing mainly depends on the matching of the surfaces of the teeth, the precision grade of the teeth of the gear is usually very high, if the position of the oil hole is slightly deviated, the drill bit is easily broken, the tooth surface is damaged, and parts are easily scrapped, so that the requirement on the position of the oil hole is high, and the processing difficulty is high. At present, in actual operation, the oil hole position is determined mainly by trying to align by naked eyes and experience of workers, so that each time a part is clamped, uncertainty exists, the integral machining time is long, and the machining cost is too high.

Disclosure of Invention

Aiming at the defects and shortcomings in the prior art, the utility model aims to provide a positioning clamp for gear drilling, so as to solve the technical problems of inconvenient drilling positioning and long processing time in the prior art.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a gear is positioning fixture for drilling, includes the base, the base includes along transversely by preceding first installation section and the second installation section of connecting the setting backward, first mounting hole has been seted up on the first installation section, rotatably be provided with the installation axle in the first mounting hole, the installation axle top is provided with the installation department, the second mounting hole has been seted up on the lateral wall of installation department, be provided with stop gear in the second mounting hole, stop gear is used for the card to go into the tooth's socket of waiting to process the gear rotation in order to injecing.

The present invention also has the following technical features.

Specifically, stop gear includes the installation section, the one end of installation section penetrates the second mounting hole, and the other end of installation section is connected with the tooth gauge head, be used for the card to wait to process the gear tooth groove in order to restrict to wait to process the gear rotation to the tooth gauge head.

Furthermore, the pair of tooth probes is spherical.

Furthermore, the vertical height of the first installation section is greater than that of the second installation section, and a limiting step surface is formed at the joint of the first installation section and the second installation section.

Furthermore, a third mounting hole which is through up and down is formed in the second mounting section, and a fastening bolt is arranged in the third mounting hole and used for fixing the base on the dividing plate.

Furthermore, the installation part is a hexagon nut, and a second installation hole is formed in each side wall of the installation part.

Furthermore, the outer wall of the mounting shaft is provided with external threads, and one end of the mounting shaft, which is close to the base, is sleeved with a locking nut; the locking nut is in threaded connection with the external thread.

Furthermore, the diameter of the pair of tooth probes is equal to the reference circle diameter.

Compared with the prior art, the utility model has the following technical effects:

(1) the positioning clamp is arranged on the index plate, and the fastening bolt for connecting the base and the index plate can rotate 360 degrees before being screwed down, so that the positioning clamp is suitable for parts with different sizes.

(2) The utility model has convenient use and easy management, the angles of the base and the tooth measuring head only need to be adjusted once for determining the position of the oil activating hole of the first part during each production change, and the adjustment is not needed during the middle working process, thereby reducing the workload of field tooling.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a cross-sectional view of the base.

Fig. 3 is a schematic view of the mounting structure of the present invention.

The reference numbers in the figures represent: 1-a base, 2-a mounting shaft, 3-a mounting part, 4-a second mounting hole, 5-a limiting mechanism, 6-a limiting step surface, 7-a fastening bolt, 8-an index plate and 9-a locking nut; 11-a first mounting section, 12-a second mounting section; 51-mounting section, 52-tooth measuring head; 111-first mounting hole, 121-third mounting hole.

The present invention will be explained in further detail with reference to examples.

Detailed Description

The following embodiments of the present invention are provided, and it should be noted that the present invention is not limited to the following embodiments, and all equivalent changes based on the technical solutions of the present invention are within the protection scope of the present invention.

While the present invention has been described in terms of its orientation, it is to be understood that the terms "upper," "lower," "front," "rear," "left," "right," and the like are used in the orientation shown in fig. 1, and that the terms "upper," "lower," "front," "rear," "left," "right," and the like are used merely to facilitate describing the utility model and to simplify the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

Example 1

According to the technical scheme, as shown in fig. 1 to 3, the positioning fixture for gear drilling comprises a base 1, wherein the base 1 comprises a first mounting section 11 and a second mounting section 12 which are transversely arranged in a forward-backward connection mode, the first mounting section 11 is provided with a first mounting hole 111, a mounting shaft 2 is rotatably arranged in the first mounting hole 111, a mounting portion 3 is arranged at the top end of the mounting shaft 2, a second mounting hole 4 is formed in the side wall of the mounting portion 3, a limiting mechanism 5 is arranged in the second mounting hole 4, and the limiting mechanism 5 is used for being clamped into a tooth groove of a gear to be machined so as to limit the rotation of the gear to be machined.

In this embodiment, base 1 adopts the cuboid structure, and first mounting hole 111 is the M10 screw hole, is convenient for insert installation axle 2, and the length of installation axle 2 can be adjusted according to the operating mode requirement, and installation axle 2 can 360 rotations in first mounting hole 111, as an preferred embodiment, sets up installation axle 2 and installation department 3 to integrated into one piece structure, is formed by standard part GB/T5781 hexagon head bolt transformation system, offers 3-M4 through-hole on the bolt head lateral wall of GB/T5781 hexagon head bolt, second mounting hole 4 promptly.

As a preferable scheme of the present embodiment, the limiting mechanism 5 includes a mounting section 51, one end of the mounting section 51 penetrates into the second mounting hole 4, and the other end of the mounting section 51 is connected with a tooth aligning head 52, and the tooth aligning head 52 is used for being clamped into a tooth groove of the gear to be processed to limit the rotation of the gear to be processed. The tooth measuring head 52 is made of hard alloy, is wear-resistant and smooth in surface, cannot cause wear to the surface of the tooth part when contacting with the tooth part, can be used for multiple times, and can be selected according to the tooth part modulus of different parts according to the diameter specification of the tooth measuring head 52, so that the tooth measuring head is convenient to replace.

As a preferable mode of the present embodiment, the stylus 52 is spherical, and a side head having another shape may be selected according to actual needs.

As a preferable scheme of this embodiment, the vertical height of the first installation section 11 is greater than the vertical height of the second installation section 12, and a limit step surface 6 is formed at the joint of the first installation section 11 and the second installation section 12. So as to ensure that the vertical height of the second mounting section provided with the fastening bolt 7 is lower than the bottom surface of the gear to be machined, and the rotary motion of the gear to be machined on the index plate is not influenced.

In a preferred embodiment of the present invention, the second mounting section 12 is provided with a third mounting hole 121 penetrating vertically, a fastening bolt 7 is provided in the third mounting hole 121, and the fastening bolt 7 is used for fixing the base to the index plate 8.

As a preferable scheme of this embodiment, the mounting portion 3 is a hexagonal nut, and each side wall of the hexagonal nut is provided with a second mounting hole 4.

As a preferable scheme of this embodiment, an external thread is provided on the outer wall of the mounting shaft 2, and a locking nut 9 is sleeved on one end of the mounting shaft 2 close to the base 1; the lock nut 9 is screwed with the external thread.

As a preferable mode of the present embodiment, the diameter of the tooth measuring head 52 is equal to the pitch circle diameter.

The using process of the utility model is as follows:

first, the fastening bolt 7 is inserted into the third mounting hole 121 formed in the base 1, then the stopper mechanism 5 including the tooth alignment measuring head 52 and the mounting section 51 is mounted to the mounting portion 3 through the second mounting hole 4, the mounting shaft 2 to which the mounting portion 3 is connected is fixed to the first mounting hole 111, and the locking nut 9 fitted around the mounting shaft 2 may be used to assist in fixing the tooth alignment measuring head 52 whose direction is determined.

When processing, at first slowly rotate and wait to process the gear for the drill bit just is in the central point that waits to process the gear tooth's socket when moving down and puts, rotating base 1 simultaneously and to tooth gauge head 52, guarantee to tooth gauge head 52 just can press from both sides in the middle of waiting to process the gear tooth's socket, accomplished the clamping location promptly.

After the first gear to be machined is machined, other gears to be machined do not need to be rotationally positioned again during clamping, and the tooth grooves of the gears to be machined are directly aligned to the tooth measuring head 52, so that the machining time is effectively saved.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention; various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a gear is positioning fixture for drilling, includes base (1), its characterized in that, base (1) includes along transversely by connecting first installation section (11) and second installation section (12) that set up to the back, first mounting hole (111) have been seted up on first installation section (11), rotatably be provided with in first mounting hole (111) installation axle (2), installation axle (2) top is provided with installation department (3), second mounting hole (4) have been seted up on the lateral wall of installation department (3), be provided with stop gear (5) in second mounting hole (4), stop gear (5) are used for the card to go into the tooth's socket of the gear of waiting to process in order to injecing to wait to process the gear rotation.

2. The positioning fixture for gear drilling according to claim 1, wherein the limiting mechanism (5) comprises a mounting section (51), one end of the mounting section (51) penetrates into the second mounting hole (4), the other end of the mounting section (51) is connected with a tooth aligning head (52), and the tooth aligning head (52) is used for being clamped into a tooth groove of a gear to be machined so as to limit rotation of the gear to be machined.

3. The positioning jig for gear drilling according to claim 2, characterized in that the pair of teeth measuring head (52) is spherical.

4. The positioning fixture for gear drilling according to claim 1, characterized in that the vertical height of the first mounting section (11) is greater than the vertical height of the second mounting section (12), and a limit step surface (6) is formed at the joint of the first mounting section (11) and the second mounting section (12).

5. The positioning fixture for gear drilling according to claim 1, wherein the second mounting section (12) is provided with a third mounting hole (121) which penetrates up and down, a fastening bolt (7) is arranged in the third mounting hole (121), and the fastening bolt (7) is used for fixing the base on the index plate (8).

6. The positioning fixture for gear drilling according to claim 1, wherein the mounting portion (3) is a hexagonal nut, and each side wall of the hexagonal nut is provided with a second mounting hole (4).

7. The positioning fixture for gear drilling according to claim 1, wherein an external thread is provided on the outer wall of the mounting shaft (2), a locking nut (9) is sleeved on one end of the mounting shaft (2) close to the base (1), and the locking nut (9) is in threaded connection with the external thread.

8. The positioning jig for gear drilling according to claim 3, characterized in that the diameter of the pair of tooth probes (52) is equal to the pitch circle diameter.