JPH04118957U - cutting fluid distributor - Google Patents

Abstract

(57) [Summary] [Purpose] A distributor with high pressure specifications that has one cutting fluid outlet at each of the multiple tool mounting positions of the tool post turret and supplies cutting fluid only to the outlet indexed to the cutting position. The cutting fluid device has a structure that prevents cutting fluid from leaking from discharge ports other than necessary locations, has a long life, and is easy to maintain. [Structure] A valve stem 15 with a conical valve 15a that is always biased toward the closing hand (inward) by a spring 16 is attached to the valve body 14, which is arranged radially in the same number of tool mounting positions, concentrically on the side of the turret 2, and the turret rotates. Cutting fluid supply path 1 provided in the center
A cam 17 integrally formed with the fixed shaft 12 having a diameter of 2a.
Then, the tip 15b of the valve rod 15 indexed to the cutting position is pressed to open the conical valve 15a against the force of the spring, and the cutting fluid is supplied only to the required cutting fluid outlet.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is a multi-function tool that supports each tool position on the tool post turret of machine tools such as lathes. Among the number of cutting fluid discharge ports, cutting fluid only comes out from the discharge port indexed to the cutting position. This invention relates to a distributor for distributing.

0002

[Conventional technology]

Conventionally, multiple tools were attached to the tool mounting position and the necessary tools were indexed to the cutting position. The lathe tool post turret discharges cutting fluid toward each cutting edge of each tool. There are as many cutting fluid nozzles as there are tool mounting positions.

0003 Cutting is performed using only one nozzle indexed to the cutting position among these multiple cutting fluid nozzles. The distributor that sends the liquid can be rotated and indexed to the tool rest main body 101 as shown in FIGS. 5 and 6. A brush is installed in the main body 101 in the center hole of the pivot axis of the supported tool post turret 102. A fixed shaft 104 fixed through a socket 103 is inserted, and a hole is drilled in this fixed shaft. The tip of the cutting fluid supply hole 104a in the axial direction has a single hole drilled from the outside in the radial direction. It communicates with the hole 104b.

0004 On the other hand, the cutting fluid passage holes 102a radially bored in the tool post turret 102 are , the outside communicates with a discharge port 102b bored in the side surface of the turret, and the discharge port is not shown in the figure. No cutting fluid is connected to the nozzle. In addition, the cutting fluid passage hole is a sliding fit with the fixed shaft. The opening 102c opens into a hole formed in the surface, and this opening 102c allows the tool post turret 102 to rotate. It is a rotary type switching valve that rotates around the opening of the hole 104b, and the cutting position is Only the opening 102b corresponding to the tool position indexed is the opening of the hole 104b. Many have a structure in which the cutting fluid is distributed by communicating with the cutting fluid.

[0005]

[Problem that the idea aims to solve]

The fixed shaft 104 and the tool post turret 102 described in the prior art are provided on the rotating surfaces. The rotary type distributor has a clearance necessary for rotation, so it is necessary to pass through this clearance in Figure 6. As shown in the figure, cutting fluid leaks into the adjacent hole 102a, and from an unnecessary cutting fluid nozzle. Cutting fluid leaks. This tendency is more common in cutting fluid equipment with high pressure specifications, and the wear of the rotating surfaces increases. The problem is that the larger the size, the larger the size.

[0006] The present invention was devised in view of these problems of the conventional technology. The purpose of this is to prevent cutting fluid from leaking from unnecessary cutting fluid nozzles. , which aims to provide a long-life distributor.

[0007]

[Means to solve the problem]

In order to achieve the above object, the cutting fluid distributor in the present invention is used for tool rests on lathes, etc. One of the multiple cutting fluid discharge ports provided on the cutter corresponding to each tool position is located at the cutting position. A cutting fluid distributor for supplying cutting fluid only to an indexed cutting fluid discharge port, Place valve seats in the same number of radial holes as the tool positions that open toward the center of rotation. A valve body with a valve body is provided concentrically with the tool post turret, and is always attached to the center of rotation by a spring. axially moving a valve stem having a conical valve pressed against the valve seat into the radial hole; Only the valve stem indexed to the cutting position by the rotation of the tool post turret is A fixed cam that is pushed up to open the conical valve is provided on the pivot center side.

[0008]

[Effect]

When the tool post turret rotates and one of the tool mounting positions is indexed to the cutting position, , the valve stem corresponding to the indexed tool position is pushed up by the fixed cam and rotated in a circle. The conical valve opens and supplies cutting fluid only to the required tool position.

[0009]

【Example】

Examples will be described with reference to FIGS. 1 to 4. In the tool post of a lathe, a tool post turret (hereinafter referred to as turret) is attached to the tool post main body 1. ) 2 is rotatably supported, and the turret 2 is rotated by a servo motor 5 around the center axis of rotation 3. It is rotated via a gear 4 fitted to the rear end.

0010 A crown gear 6 is fixed to the right side of the turret 2 with its tooth surface facing left, and the main body A crown gear 7 having the same tooth profile on the left side of the crown gear 6 has a tooth surface on the left side of the crown gear 6. A hydraulic cylinder is installed on the main body 1 concentrically with the pivot axis 3. The crown gear 11 fixed to the left end of the piston rod 9 of the cylinder 8 is the crown gear. -6 and 7 are removably engaged.

[0011] Pressurized oil is sent to the rear chamber of the cylinder 8 and the piston gears 6, 7, 11 are connected to each other. When the tongue rod 9 moves forward and the engagement between the crown gear 11 and 6, 7 is released. , the turret 2 becomes able to rotate, and pressure oil is sent to the front chamber of the cylinder 8, causing the crown gear to rotate. When the gear 11 is pressed against the crown gears 6 and 7, the crown gear 7 on the main body side The tooth surfaces of the crown gear 6 on the turret side are aligned with the tooth surfaces of the turret 2, and the position of the turret 2 is Decisive clamping is done at the same time.

0012 A fixed shaft 12 is fitted into the center hole of the rotation center shaft 3, and the fixed shaft 12 is inserted into the center hole of the main body 1. It is fixed to the left side surface via a bracket 13. Bracket 13 is not shown. A flow path 13a that communicates with a cutting fluid pump device is bored, and the flow path 13a is made of a solid material. At right angles to the right end of the supply path 12a, which is bored in the fixed shaft 12 in the axial direction and is open only at the left end. It is communicated. The left end of the fixed shaft 12 protrudes from the left end surface of the turret 2. There is.

[0013] A valve body 14 is fitted concentrically to the left end surface of the turret 2, and the center of the valve body 14 is fixed. The left end portion of the fixed shaft 12 is fitted into the blind hole 14a with a gap. The same number of stepped holes as the tool mounting positions of the turret 2 are drilled radially in the valve body 14. The stepped hole opens toward the center hole 14a, and a valve seat 14b is formed on the stepped end surface. has been completed.

[0014] A valve stem 15 having a conical valve 15a is fitted into each stepped hole so as to be movable in the axial direction. , the valve stem 15 is always urged toward the center of rotation by the spring 16 to close the valve, and the tip 15b slightly protrudes from the stepped hole opening.

[0015] A plurality of grooves 15c for cutting fluid passages as shown in FIG. A similar groove 15d is also carved in the large diameter shaft portion. and each stage The large diameter holes of the attached holes communicate with a plurality of holes 2a radially drilled in the turret 2. The tip of the hole 2a is connected at right angles to a hole that communicates with a cutting fluid nozzle (not shown). ing.

[0016] There is a convex portion at one location in the radial direction on the outer periphery of the left end of the fixed shaft 12 at a position corresponding to the valve stem 15. A cam 17 is integrally formed, and the cam 17 is attached to a tool attachment point indexed to the cutting position. so that the convex portion is located at a position that pushes up the tip 15b of the valve stem 15 corresponding to the It is set.

[0017] Next, the operation of this embodiment will be explained. Pressure oil is sent to the rear chamber of the hydraulic cylinder 8, the piston rod 9 moves forward, and the crown The gear 11 is disengaged from the gears 6 and 7, and the servo motor 5 rotates to drive the gear 4 through the gear 4. turret 2 rotates, and the tool installation position specified by the program is assigned to the cutting position. The pressure oil is sent to the front chamber of the hydraulic cylinder 8, and the crown gear 11 is moved to 6 and 7. Pressure is applied and positioning and clamping are performed at the same time.

[0018] During this rotation, the valve stem 15 corresponding to the tool mounting position indexed to the cutting position is moved to the cam 1. 7 pushes the conical valve 15a away from the valve seat 14b, opening the valve and opening the bracket. The cutting fluid sent from the flow path 13a of the valve stem 13 passes through the grooves 15c and 15d of the valve stem 15. is sent out from hole 2b and directed toward the cutting edge from the opening of a cutting fluid nozzle (not shown). It is discharged.

[0019] In addition, rubber or the like is attached to either the conical valve 15a of the valve stem 15 or the valve seat 14b of the valve body 14. By using a soft material, the cutting fluid can be prevented from leaking even if dirt gets caught. Ru.

[0020]

[Effect of the idea]

Since the present invention is configured as described above, it produces the following effects. The valve stem with a conical valve, which is always biased toward closing by a spring, is placed in the tool mounting position. The same number of radially arranged valve bodies are installed concentrically on the tool post turret, and the turret rotation center Valve corresponding to the tool mounting position indexed to the cutting position by a fixed cam installed on the side. Push up on the rod to open the valve so that the cutting fluid flows only from the required cutting fluid nozzle. Therefore, even with high-pressure cutting fluid equipment, cutting fluid leaks from unnecessary cutting fluid nozzles. Since there are no wear points and there are few wear parts, the life is long and maintenance is easy.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a cutting fluid distributor according to the present embodiment.

FIG. 2 is a cross-sectional view of the tool rest with a distributor according to the present embodiment.

FIG. 3 is a partial cross-sectional view taken along line AA in FIG. 1;

FIG. 4 is a sectional view taken along line BB in FIG. 1;

FIG. 5 is a sectional view of a conventional tool rest with a distributor.

FIG. 6 is a partial cross-sectional view taken along line CC in FIG. 5;

[Explanation of symbols]

2 Tool post turret 12 Fixed axis 14 Valve body 14b Valve seat 15 Valve stem 15a Conical valve 17 Cam

Claims (1)

[Scope of utility model registration request] 1. A cutting fluid distribution system for supplying cutting fluid only to a cutting fluid outlet indexed to a cutting position among a plurality of cutting fluid outlet ports provided in a tool post turret of a lathe, etc. and corresponding to each tool position. A valve body having a valve seat in each of the same number of radial holes as the tool positions opening toward the center of rotation is provided concentrically on the tool post turret, and the valve body is always biased toward the center of rotation by a spring. A valve stem having a conical valve crimped onto a seat is provided in the radial hole so as to be movable in the axial direction, and only the valve stem indexed to the cutting position is pushed up by rotation of the tool post turret to open the conical valve. A cutting fluid distributor characterized in that a fixed cam is provided at the center of rotation.