CN218983943U

CN218983943U - Multi-station fixture for valve body five-axis milling groove and inclined hole drilling

Info

Publication number: CN218983943U
Application number: CN202320119989.2U
Authority: CN
Inventors: 钱海燕; 支建冲
Original assignee: NANTONG HUANQIU STEERING GEAR MANUFACTURE CO Ltd
Current assignee: NANTONG HUANQIU STEERING GEAR MANUFACTURE CO Ltd
Priority date: 2023-01-30
Filing date: 2023-01-30
Publication date: 2023-05-09
Anticipated expiration: 2033-01-30

Abstract

The utility model discloses a valve body five-axis milling groove inclined hole multi-station fixture, which belongs to the field of fixture design and comprises a positioning disk, wherein a edging positioning pin and a positioning pin are vertically pressed on the surface of the positioning disk, a positioning mandrel is vertically pressed on the center of the positioning disk, and a positioning cover is detachably arranged on the axial end surface of the positioning mandrel far away from the positioning disk; the utility model installs this clamp on five index heads of the lathe when using, the clamp can move freely along with the index heads, the turning head on the lathe can carry on operations such as milling flutes, drilling to the valve body on the clamp sequentially, can carry on the operation of multiple process at the same time, reduce the frock and change the frequency, accelerate the work efficiency.

Description

Multi-station fixture for valve body five-axis milling groove and inclined hole drilling

Technical Field

The utility model relates to the technical field of fixture design, in particular to a valve body five-axis milling groove inclined hole multi-station fixture.

Background

The valve body is a main part of a power steering gear, and has different mechanical manufacturing methods according to pressure grades. Such as casting, forging, etc. Valve bodies of low pressure specifications are typically produced using a casting process. The valve body with middle and high pressure specifications is produced by adopting a forging process, and the valve body formed by forging or casting requires further processing of a machine tool, such as working procedures of valve body milling grooves, drilling inclined holes and the like, and the existing fixture design has defects, and the valve body milling grooves, the drilling inclined holes and the like are processed in multiple ways, so that the production efficiency is low, and the processing period is long; the position and the size of the processed holes and grooves have errors; the single valve body has different positions and angles of inclined holes and milling grooves, so that the required tools are more, and the manufacturing cost is high.

Disclosure of Invention

The utility model aims to provide a valve body five-axis milling groove inclined hole multi-station fixture, which is used for solving the defects of long valve body machining period, large error and high manufacturing cost caused by a large number of tools required for machining in the prior art.

In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme: the valve body five-axis milling groove inclined hole drilling multi-station clamp comprises a positioning disc, wherein a edging positioning pin and a positioning pin are vertically pressed on the surface of the positioning disc, a positioning mandrel is vertically pressed on the center of the positioning disc, and a positioning cover is detachably arranged on the axial end surface of the positioning mandrel away from the positioning disc;

at least 4 locking pieces are arranged on the edge of the positioning disc.

The positioning mandrel is far away from the end face of the positioning disc, a cavity with internal threads is arranged in the cavity, hexagonal cylindrical head screws are connected in a spiral fit mode, the positioning cover is sleeved and abutted to the positioning mandrel, the hexagonal cylindrical head screws penetrate through the positioning cover to screw the positioning cover, and M12 multiplied by 50 is selected as a hexagonal cylindrical head screw signal.

And a wear-resistant ring is arranged between the hexagonal cylindrical head screw and the positioning cover.

The edging locating pin is opposite to the locating pin and the locating mandrel in the press-fitting direction.

The edging locating pin, the locating pin and the locating mandrel are all connected with the locating disc in interference fit.

The edging locating pin and the locating pin are radially and symmetrically pressed on the locating disc.

The locking piece is a T-shaped groove quick-release bolt, and the circumferential array of the T-shaped groove quick-release bolts is arranged on the edge surface of the positioning disc.

According to the technical scheme, the utility model has at least the following effects:

1. when the fixture is used, the fixture is arranged on the five-axis dividing head of the machine tool, the fixture can freely move along with the dividing head, and the rotating head on the machine tool can sequentially perform operations such as milling grooves, drilling holes and the like on the valve body on the fixture, so that operations of multiple working procedures can be performed simultaneously, tool replacement frequency is reduced, and working efficiency is improved.

2. When the valve body is installed, the valve body can be quickly and stably installed by matching with the locking of the hexagonal cylindrical head screw through the positioning of the positioning cover and the positioning mandrel, the size precision of milling grooves and drilling inclined holes of the valve body is improved, the rejection rate is reduced, meanwhile, the stably installed valve body is ensured, the mutual position requirements of grooves and holes machined by the valve body are met, and parts are more attractive.

Drawings

FIG. 1 is a schematic view of the front structure of the valve body of the present utility model after installation;

FIG. 2 is a rear side cross-sectional view of the installed valve body of the present utility model;

FIG. 3 is an enlarged view at A of FIG. 2;

FIG. 4 is a side cross-sectional view of the present utility model;

wherein: 1 hexagonal cylindrical head screw, 2 positioning cover, 3 positioning core shaft, 4 positioning disk, 5 edging locating pin and 6 locating pin.

Description of the embodiments

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

As shown in fig. 1 to 3, the utility model provides a valve body five-axis milling groove inclined hole multi-station fixture, which comprises a positioning disk 4, wherein a edging positioning pin 5 and a positioning pin 6 are vertically pressed on the surface of the positioning disk 4, a positioning mandrel 3 is vertically pressed on the center of the positioning disk 4, and a positioning cover 2 is detachably arranged on the axial end surface of the positioning mandrel 3 away from the positioning disk 4; at least 4 locking pieces are arranged on the edge of the positioning disc 4.

When the valve body machining tool is used, the valve body which is machined is arranged on the positioning disc 4 according to the positions of the positioning mandrel 3 and the edging positioning pin 5, then the valve body is fixed by the positioning cover 2, the valve body can stably follow the dividing head to change the position, and the valve body is machined in various working procedures by matching with a drill bit or a milling cutter on a machine tool.

Referring to fig. 3, it can be seen that a hexagonal cylindrical head screw is disposed on the positioning cover 2, a cavity with internal threads is disposed on the end surface of the positioning mandrel 3 away from the positioning disk 4, the hexagonal cylindrical head screw 1 is connected in a threaded fit in the cavity, the positioning cover 2 is sleeved and abutted to the positioning mandrel 3, and the hexagonal cylindrical head screw 1 penetrates through the positioning cover 2 to screw the positioning cover 2.

In order to prevent the hexagonal socket head cap screw 1 from being excessively worn after long-term use, a wear-resistant ring may be provided between the hexagonal socket head cap screw 1 and the positioning cover 2 in actual production.

From fig. 2, it can be seen that the direction of the edge-trimming positioning pin 5 is opposite to that of the positioning pin 6 and the positioning mandrel 3, the press-mounting is performed by using an interference fit connection mode, the edge-trimming positioning pin 5, the positioning pin 6 and the positioning mandrel 3 are all connected with the positioning disc 4 in an interference fit manner, in the production, a counter bore is formed in the center of the positioning disc 4, the positioning mandrel 3 is knocked into the counter bore from left to right, a pair of mounting holes are formed in the positioning disc 4 in radial symmetry, the positioning pin 6 is knocked into the corresponding mounting hole from left to right, and the edge-trimming positioning pin 5 is knocked into the corresponding mounting hole from right to left.

In order to solve the design cost and ensure the installation strength of the positioning disk 4 on the machine tool dividing head, T-shaped groove quick-release bolts are selected as locking pieces, and when the design is carried out, 4T-shaped groove quick-release bolts are selected to be circumferentially arranged on the edge surface of the positioning disk 4, and the 4T-shaped groove quick-release bolts can meet the installation strength of the positioning disk 4 and ensure the use safety.

The device is specifically used: firstly, the fixture is integrally arranged on a five-axis dividing head of a machine tool, a positioning disk 4 and the dividing head in the fixture are positioned through a positioning mandrel 3 and a positioning pin 6, the relative positions of the fixture and the five-axis dividing head are ensured, meanwhile, the fixture is fastened by 4T-shaped groove quick-release bolts, and a valve body is locked through a positioning cover 2 and an inner hexagonal cylindrical head screw M12×501.

During processing, the valve body (the valve body is the dotted line part in figures 1, 2 and 3) which is processed in the preamble is picked up, the valve body is mounted on the positioning disc 4, and one-to-two pin positioning is realized through the positioning mandrel 3 and the edging positioning pin 5. The work is clamped by positioning the cap 2 and the hexagon socket head cap screw m12×501.

And (3) starting a machine tool, and sequentially machining the workpieces by automatically adjusting angles of the numerical control five-axis dividing heads: the relevant processing data are listed here, (1) drilling phi 6 deep 20, angle 10; (2) milling an R8 arc step; (3) drilling phi 8, depth 83 and angle 65 degrees; (4) milling flutes 4-8 are uniformly distributed to ensure a dimension 94 and an angle of 15. Four sets of tools are needed for the corresponding working procedures of milling grooves, drilling inclined holes and the like of each valve body, and the workpiece needs to be clamped four times, so that only one set of tools is needed.

Through the use of the valve body five-axis groove milling and inclined hole drilling clamp, the mutual position requirements of grooves and holes machined by the valve body are ensured, so that parts are more attractive; secondly, the size precision of milling grooves and drilling inclined holes of the valve body is greatly improved, and the rejection rate is reduced; the replacement frequency of the tool is reduced again, the production efficiency is greatly improved, and the production cost is reduced.

It will be appreciated by those skilled in the art that the present utility model can be carried out in other embodiments without departing from the spirit or essential characteristics thereof. Accordingly, the above disclosed embodiments are illustrative in all respects, and not exclusive. All changes that come within the scope of the utility model or equivalents thereto are intended to be embraced therein.

Claims

1. The valve body five-axis milling groove inclined hole multi-station fixture is characterized by comprising a positioning disc (4), wherein a edging positioning pin (5) and a positioning pin (6) are vertically pressed on the surface of the positioning disc (4), a positioning mandrel (3) is vertically pressed on the center of the positioning disc (4), and a positioning cover (2) is detachably arranged on the axial end face, far away from the positioning disc (4), of the positioning mandrel (3);

at least 4 locking pieces are arranged on the edge of the positioning disc (4).

2. The valve body five-axis milling groove inclined hole multi-station fixture according to claim 1 is characterized in that a cavity with internal threads is arranged on the end face of the positioning mandrel (3) away from the positioning disc (4), a hexagonal cylindrical head screw (1) is connected in a threaded fit mode in the cavity, the positioning cap (2) is sleeved and abutted to the positioning mandrel (3), and the hexagonal cylindrical head screw (1) penetrates through the positioning cap (2) to screw the positioning cap (2).

3. The valve body five-axis milling groove inclined hole multi-station fixture according to claim 2 is characterized in that a wear-resistant ring is arranged between the hexagonal cylindrical head screw (1) and the positioning cover (2).

4. The valve body five-axis milling groove inclined hole multi-station fixture according to claim 1, wherein the edging locating pin (5) is opposite to the press-fitting direction of the locating pin (6) and the locating mandrel (3).

5. The valve body five-axis milling groove inclined hole multi-station fixture according to claim 4 is characterized in that the edging locating pin (5), the locating pin (6) and the locating mandrel (3) are all connected with the locating disc (4) in an interference fit mode.

6. The valve body five-axis milling groove inclined hole multi-station clamp according to claim 4, wherein the edging locating pin (5) and the locating pin (6) are radially and symmetrically pressed on the locating disc (4).

7. The valve body five-axis milling groove inclined hole multi-station clamp according to claim 1, wherein the locking piece is a T-shaped groove quick-release bolt, and the circumferential array of the T-shaped groove quick-release bolts is arranged on the edge surface of the positioning disc (4).