JPS60227223A - Grinding station for grinder especially for chamfering or grooving glasses lens - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Applicability] The present invention generally relates to grinding Ki$lIL, and more particularly, to
In particular, but not exclusively, by turning the eyeglass lens to match the contour of the rim of the eyeglass frame to which the eyeglass lens is to be attached, and then fitting the eyeglass lens into a complementary groove or line groove to be formed in the rim for this purpose. A lip, generally a bevel, for holding the spectacle lens on the rim, or a groove for holding the spectacle lens on the rim by engaging on a tongue or wire attached to the rim. , relates to the grinding carried out when it is necessary to form on the edge surface of a spectacle lens.

[Conventional technology]

The grinding machines used for this purpose, commonly referred to as bevel-forming machines, generally have at least one grinding station, in which a grinding wheel with an edge surface according to the desired contour is installed. Rotatably installed inside the housing.

In practice, the spectacle lens to be chamfered or grooved is supported on a support shaft (which is arranged parallel to the axis of the grinding wheel and has its own (which is rotatably mounted on the grinding wheel) is mounted movably relative to the axis of the grinding wheel, for example about an axis parallel to the axis of the grinding wheel; A very clearly defined processing area is created which is accessible from the outside for the grinding wheel.

In addition, a suitable abrasive material is added in suspension to form a film of fluid on the surface of the grinding wheel, especially for cooling purposes, and in many cases at the same time to improve the processing conditions of the grinding wheel. An injector is usually associated with the grinding wheel for forming a fluid film that is conveyed into contact with the grinding wheel.

This injection device is often arranged in the immediate vicinity of the processing area of the grinding wheel and simply injects the corresponding fluid onto the grinding wheel by gravity KJ:C.

This device has at least two drawbacks:

First, unwanted droplets are irreversibly generated.

Second, a fluid haze is created, which obstructs the field of view for processing.

This problem becomes more serious due to the following: That is, the processing area of the grinding wheel is the front area of the grinding station (
(where the worker is working), the spectacle lens itself During the machining, direct viewing of the machining area by the operator is often at least partially obstructed.

Due to the combination of these conditions, it has conventionally been extremely difficult for an operator to visually monitor the state of the machining process being performed.

[Problem that the invention seeks to solve]

A general object of the invention is to reduce or eliminate these disadvantages.

[Means for solving problems]

The present invention particularly relates to chamfering or machining ophthalmic lenses, in particular of the type in which the grinding wheel is rotatably mounted inside the housing so as to operate in a machining area accessible from the outside of the housing. A grinding station for a grinding device for grooving, which separates the processing area of the grinding wheel from the area where workers are working.
With respect to the front area of the grinding wheel, the grinding stay/con is characterized in that it extends from the vertical plane passing through the axis of the grinding wheel to the rear of the vertical plane, for example, is disposed approximately ≠50 mm behind the vertical plane. I will provide a.

According to this configuration, the eyeglass lens being processed is not interposed in the normal viewing direction of the viewer, and on the contrary, the viewer can see the difference between the eyeglass lens and the grinding wheel. The contact area can be seen directly, which is preferable.

According to another aspect of the grinding station according to the invention, when the grinding wheel is combined with an injection device for forming a fluid film on the surface of the grinding wheel, the injection device is arranged in the direction of rotation of the grinding wheel. A nounong is located sufficiently upstream of the machining zone, at a solid angle around the axis of the grinding wheel equal to at least ≠ 50, between the injection zone and the machining zone where the injection is made from the injection device. At least seven deflection members are arranged in the interior area of the deflection member.

According to this configuration, the generation of splashes within the processing area is reduced or eliminated.

US Pat. No. 3331/-IA, in which the processing area is conventionally arranged in the front area of the grinding station! ; No. 1 is equipped with an injection device at a location away from the processing area.

However, this is an auxiliary injection device, and the injection device is arranged directly above and in the immediate vicinity of the processing area.

Furthermore, this auxiliary injection device is equipped with blades,
These vanes do not change direction, as in the case of the present invention, but are at most a distribution device for better dispersion of the jet fluid over the surface of the grinding wheel.

These vanes, in all cases, are interposed directly at the injection zone and not between the injection zone and the processing zone, and insofar as their orientation can be discerned, the blades are It is generally oriented to approximately follow the direction of rotation of the wheel, and is not oriented in a direction opposite to the same direction of rotation of the grinding wheel.

According to US Pat. No. 21/1/1/6, the processing area is also conventionally arranged on the front side of the device.

However, the injection device associated with the grinding wheel is not upstream of the processing zone, but downstream of it, even though it is arranged at a distance from the corresponding processing zone, and controls the injection fluid used. No special measures have been taken for this purpose.

In particular, no deflection elements are used to direct the jet fluid droplets.

According to another feature of the invention, a supply of hot gas fluid, for example air, is provided above the processing area of the grinding wheel.

Therefore, mist that may be generated in the processing area when the eyeglass lens and the grinding wheel come into contact during processing is systematically prevented, which is preferable.

As described above, according to the present invention, the worker can use glasses by observing the processing area, more precisely, the contact area between the glasses lens and the grinding wheel under good conditions. Processing performed on lenses can be optimally managed.

According to a further feature of the invention, the grinding station grinding wheel is generally eccentric within the housing in which it is housed; The space formed between them is larger both below and above the plane passing through the axis of the grinding wheel.

According to this configuration, depressurization that may occur in the fluid film inside the lubricant stirred by the rotation of the grinding wheel is systematically prevented, so that mist, turbulence, or cavitation caused by this depressurization is prevented. Avoidable and preferable.

The features and advantages of the invention will become more apparent from the following detailed description, taken in conjunction with the accompanying drawings.

〔Example〕

The grinding station according to the invention, as shown in the figures,
And, as known per se, the housing 1
A nine wheel wheel 12 rotatably mounted in the housing 10 (singlely shown as a solid line in each figure) is provided for operation in a machining area 11 that is accessible from the outside of the housing 10. The grinding wheel 12 is shown in each figure, especially in the second, third, and so on. In the figure, only the outline thereof is shown by a dashed line.

In reality, this grinding station consists of the eyeglass lens 13
It is used for chamfering or grooving, and only the outline of the spectacle lens 13 is shown in each figure, more precisely, in FIG. 2 by a seven-dot chain line.

According to one aspect of the invention, the processing area 1 of the grinding wheel 12
1. That is, the area where the eyeglass lens 13 to be processed is placed is a vertical plane passing through the axis A of the grinding wheel 120 with respect to the front area AV of the housing 10 where the worker is located.
is behind that surface V first.

The vertical plane V, like the axis A of the grinding wheel 12, is shown in FIG.

According to the invention, the processing *11 of the grinding wheel 12 is located 4/-j' behind the vertical plane (2).

The housing 10 generally forms a cylindrical-shaped volume with a generatrix parallel to the axis A of the grinding wheel 12 in the illustrated example.

That is, from this point of view, the housing 10 has a wall portion 15 facing the axis AO rotation of the spindle wheel 12, and this shaft 4i1.
A and two steel plates 16 that are substantially perpendicular to each other.

Further, the axial wall portion 15 and the side plate 16 are connected to the grinding table 1.
The main body 17 is formed on the 20th axis AO rotation, and a protrusion 18 protruding from the main body 17 is formed in the machining area ll.
is formed.

In reality, this protrusion 18 extends beyond the processing area 11 and towards the rear thereof.

...Using lO1, more precisely, its IIJII @
The upper part of the wall 15 forms a flat or working surface 19 which supports an open hood 19 above the working area 11 of the grinding wheel 12.
The machined surface 19 extends to the protrusion 18 at right angles to the vertical plane V mentioned above and in the direction ff1M relative to the main body 17, and partially covers the upper part of the protrusion 18. It's closed.

Of course, this processed surface 19 has a through hole 21 for storing the eyeglass lens 13 in the inner chamber of the housing 15.
According to the illustrated embodiment, this through hole has a rectangular shape.

This through hole 21 allows the glasses V-lens 13 to be inserted into the processing area 11.
can be inserted into.

At the protrusion 18 of the side plate 16 of the housing 10,
Elongated holes 24 in the form of holes 24 are bored so as to correspond to each other, through which a shaft 23 for holding and rotationally driving the eyeglass lens 13 to be processed passes through in parallel to the axis mA of the grinding wheel 12. The elongated hole 24 extends in an arc shape toward the axis @AK of the grinding wheel 12.

Each elongated hole 24 is of course associated with a sealing means for applying pressure so that the sealing is maintained reliably even when the shaft 23 is passed through.

This sealing means is in fact well known to those skilled in the art and does not fall within the scope of the invention, so it will not be described in detail here.

Fourth, each side plate 16 of the housing 10 has a through hole 26 (K) at the main body 17 for passing the support drive shaft 27 which is integrally attached to the grinding wheel 12 with a key.
Each is formed correspondingly.

Although these through holes 26 are also provided with sealing means,
This is also well known to those skilled in the art and will not be described here.

As shown, the housing 10 generally consists of two parts, an upper half 10A and a lower half 10B, which are connected to the axis A of the grinding wheel 12 and the center line of the elongated hole 24 of the side plate 16. are abutted against each other as appropriate according to a joining surface J passing through both of them, and are appropriately joined to each other.

The joining means for this purpose are not shown as they are well known to those skilled in the art.

The grinding wheel 12 is in any case mounted eccentrically within the housing lo, in accordance with the seven features of the invention, and the housing 1°
2, and the space 28A above the horizontal plane H passing through the axis A of the grinding wheel 12 is smaller than the space 28B below it.

In other words, the depth of the lower half 10B of the housing 10 is
The height of the upper half 10A is larger than that of the corresponding empty space 28B.
, 28A are defined between the lower half 10B and the grinding wheel 12 and between the upper half 10A and the grinding wheel 12, respectively.

Inside the housing 10 there is disposed an injector 29 which is combined with the wheel 12 to form a film of fluid on the surface of the wheel 12 .

According to one feature of the invention, this injection device 29 is arranged such that, with respect to the direction of rotation of the grinding wheel 12, represented by the arrow F1 in FIG.
The reed is placed considerably upstream of the machining zone 11 by a solid angle S equal to 50, and is located between the corresponding injection zone 32 of the grinding wheel 12 and the machining zone 11.
At least one deflection member 33 is provided.

In fact, in the illustrated embodiment, the solid angle measured between the processing area 11 (which can be considered to result in the contact area between the spectacle lens 13 and the grinding wheel 12) and the implantation area of the injection device 29 S is on the order of 7g00.

In other words, the machining area 11 is located above the axis 1iA of the grinding wheel 12 at approximately ≠50 degrees behind the vertical plane V, whereas the planting area of the injection device 29 is located above the axis 1iA of the grinding wheel 12. It lies below the axis MA and in front of the vertical plane V at a point tILj'.

According to the illustrated embodiment, the injection bag rIIIt 29 has an injection tube 3 extending parallel to the axis A of the grinding wheel 12 from one side plate 16 of the housing 10 to the other side plate 16.
0, and a connector 31 that passes through the axial wall portion 15 of the housing 10 and is connected to the injection pipe 30 for supplying fluid to the injection pipe.

In reality, the nozzles of the injection tube 29 are distributed along the upper generatrix of the injection tube 29, so the corresponding injection liquid NNl is shown in FIG. As shown, it extends in the rotational direction of the grinding wheel 12 and in the tangential direction of the grinding table 12.

Since the injection pipe 30 is actually located vertically below the front generatrix of the grinding wheel 12, the injection area 32 of the grinding wheel 12 itself is
It extends so as to substantially follow the front generatrix of the grinding wheel 12.

In fact, the plurality of deflection members 33 are distributed from the injection region 32 to the processing region 11, or more precisely, distributed around the grinding wheel 120 from the front surface area of the housing 10 to the upper surface area thereof. has been done.

Each deflecting member 33 has one or more wheels 12 in the transverse direction.
Each has a curved profile with a concave surface oriented in a direction perpendicular to the axis of the wheel 1 and opposite to the machining area 11 of the grinding wheel 12.

Moreover, each deflection member 33 is arranged in the longitudinal direction, that is, in the direction of the grinding wheel 1
Also in the direction parallel to the axis of 2, each has a curved outline with four faces oriented in the opposite direction to the machining area 11.

However, the deflection member 33 can be
starting from the inner surface of the housing 1°, more precisely from the relevant part of its axial wall 15, extending between its front and upper regions.

According to one feature of the invention, the processing area 1 of the grinding wheel 12
A supply of hot gas (hot gas fluid), for example air, is arranged above 1 .

In fact, according to the embodiment shown, inside the housing 10 there is a passage 35 for the hot fluid used, which passage 35 is located in the interior of the open hood 19 in close contact with the machining surface P. There are people in the empty space.

As an example, the passage 35 is formed within the thickness of the front corresponding portion of the axial wall portion 15 of the housing 10, and extends from the lower part of the housing 10 (the portion to which the nozzle 36 supplies the material) almost to the processing surface P. , extending to the top of the housing 10.

As shown in the figure, the passage 35 extends upward as it approaches one machining surface P, and opens obliquely to the machining surface P on the upstream side of the machining area 11 of the grinding wheel 12.
It opens in the vicinity of the wall 37 of the opening 7-door 19, which has the same degree of inclination.

In fact, in the illustrated example, the passage to the processing surface P, 3
The outlet 38 of the grinding wheel 12 extends in a slit shape parallel to the axis of the grinding wheel 12 in the immediate vicinity of the axially forward edge of the processing surface P.

The hot gas fluid, which is not described in detail here as it is not within the scope of the present invention, is air taken from the vicinity of the engine to ensure the drive of the grinding wheel 12.

Inside the housing 10, on the downstream side of the processing area 11 of the grinding wheel 12, an injection device 40 for cleaning the grinding wheel 12 is provided.

In the embodiment shown, the injection device [40 has two injection tubes 41, which are located behind the vertical plane V and below the axis MA of the grinding wheel 12 relative to the axis A. It is arranged at an angle of approximately 41-j', and similarly to the injection tube 30, it extends from one side plate 16 of the housing 10 to the side plate 16 of the capacity, extends parallel to the axis, and extends circumferentially from the other side. separated by.

The injector t40 is one for each IIIJ injection tube 41.
The connector 42 is connected to the injection pipe 41 and extends through the axial wall 15 of the housing 10 so as to supply pressurized water to the inside of the unong 10. are doing.

The nozzles of each injection tube 41 are distributed according to a generatrix oriented in the vertical plane (2).

Therefore, the corresponding cleaning liquid layer N2 is formed almost horizontally for the injection pipe 41 closer to the processing area 11 of the grinding wheel 12, and slightly diagonally upward for the injection pipe 41 of the higher capacity, respectively, on the vertical plane. is directed towards.

In combination with an injector 40 constructed in this way, at least seven deflection elements 44, 44' are preferably arranged as shown, which deflection elements prevent the liquid splashes that may occur. into the lower part of the housing 10 which is opened downwardly to the outside by means of an outlet 45, joining it into the general return flow of the device.

The deflection member 44 is arranged on the side of the vertical plane V, and the deflection member 44
' are planted in front of each.

The deflection elements 44, 44', like the deflection elements 33, extend from one side plate 16 of the housing 10 to the pond side plate 16.

The deflection elements 44 , 44 ′, like the deflection elements 33 , have a curved profile in the transverse direction, ie at right angles to the axis 12 of the grinding wheel 12 .

The concave surface of the deflection member 44, 44' is actually oriented in the vertical plane ■.

Therefore, 1! of deflection member 44'! ! The 11th surface is the deflection member 4
The concave surface of 4 is in the opposite direction.

However, the deflection elements 44 , 44 ′, unlike the deflection elements 33 , have a straight profile in the longitudinal direction, parallel to the axis A of the grinding wheel 12 , and are generally directed towards the outlet 45 of the device. Extend to a distance consisting of the corresponding part of the axially oriented section 15 of the housing lO to allow a free flow of return flow between the deflection member 44, 44/ and the axial wall 15. are doing.

In the illustrated example, an injection device 46 is disposed at the tip of the protrusion 18 of the housing 10, and the injection device 46 has a
The injection pipes are formed by one side plate 1 of the housing 10 parallel to the axis MA of the grinding wheel 12.
6 to the side plate 16 of the capacity, and the injection port extends from the protrusion 18.
It is directed onto the bottom surface of C.

In the illustrated example, an annular reinforcing rib 48 is formed on each side plate 16 of the housing 10, and the reinforcing rib 48 is
It protrudes in the axial direction toward the grinding wheel 12, has a circular outline substantially similar to the outline of the grinding wheel 12, and forms a deflection plate for avoiding the jetted water.

The opening 7-door 19 is bell-shaped, and its opening has a rectangular outline that is the same as the outline of the processing surface P of the housing 10.

As mentioned above, the front surface 37 of the hood 19 is sloped.

However, the other surfaces of the hood 19 extend substantially perpendicularly to the processing surface P of the housing 10.

The hood 19 is preferably transparent and made of synthetic resin, for example.

In the illustrated example, the hood 9 is pivoted to the housing 10 along the horizontal line of the processing surface P of the housing 1o that is farthest from the vertical plane V, so that
It opens from the front to the rear according to arrow F2 in the figure.

As is clear from the above description, the operator can always look directly into the processing area 11 under the best viewing conditions.

In particular, the passage 35 that barely enters the machining surface P and the front surface 37 of the open hood 19 that follows this passage are inclined, and the high temperature fluid that enters the internal volume of the open hood 19 is directed toward the upper surface of the hood 19. By being incident at an angle to , the fluid is more easily deflected towards the working area 11 of the grinding wheel 12 and no mist is generated in the working area 11.

Furthermore, by sweeping the open hood 19 in this manner, sediment on the open hood 19 is removed.

All dirt on the grinding wheel 12 is also systematically removed by the injection device 40.

The present invention is not limited to the configuration described above, but includes all its various modifications.

In particular, the injection device 29, as shown by the 7-point S line in FIG.
On the front area AV side of the device, the machining area 11 and 180° Fi4 are arranged at right angles to the axis mA of the grinding wheel 12.
It may be placed above the grinding wheel 12.

In this case as well, the injector 29 has 11 greater than ≠50.
1 is sufficiently upstream of the processing area 11 by a solid angle around the line 12.

[Brief explanation of drawings]

1 is a perspective view showing the grinding station according to the invention, more precisely the open hood used in this station and the open hood associated therewith; FIG. 3 is a cross-sectional view taken along the
The plan view seen in the direction of the arrow ■ in the figure, Figure ≠ is I in Figure 2.
FIG. 3 is an axial cross-sectional view taken along the line V-1/. Explanation of symbols 10... No wasting, 11... Machining area, 12... Grinding wheel, AV... Front area, ■...'f! face. Procedural amendment band (method) 3. Relationship with the case of the person making the amendment Applicant name Nijirol International Company
General Dobtyk 4, Agent (2) Correct "Title of 31 Invention" on page 8 of the specification to "Detailed Description of Invention 31."゛

Claims (1)

[Claims] (1) ... A Kf wheel (12) is rotated simultaneously inside the unong (10) so as to operate within the machining area (11) that is accessible from the outside of the unong (10). This is a grinding stay/con that can be freely attached, especially for grinding for chamfering or grooving on eyeglass lenses, and is used for grinding the processing area (11) of the grinding wheel (12). Regarding the front area (AV) of No-Ushifugu (10) where the workers are working, the axis of the grinding wheel (12),! ! (
A) A grinding stay/con characterized in that it extends from a vertical plane (V) passing through t first and behind the vertical plane (V). (2) The processing area (11) of the grinding wheel (12) is arranged approximately ≠50 degrees behind the vertical plane (V) passing through the axis of the grinding wheel (12), l5 (A). A grinding station 7 according to claim 1. (3) an injector (29) is combined with the grinding wheel (12) to form a film of fluid on the surface of the grinding wheel (12); ), the housing (10) is arranged sufficiently upstream of the processing area (11) as viewed in the rotational direction of the housing (10), and is located between the injection area (32) from which the injection device (29) injects and the processing area (11). In the inner region of
Grinding station 7 according to claim 1 or 2, characterized in that at least one deflection plate (33) is arranged. (4) Claims characterized in that the injection device (29) is arranged upstream of the processing area (11) by at least a solid angle (S) of rotation of the axis (A) equal to ≠50. Grinding station according to paragraph 3. (5) The installation area of the injection device (29) and the grinding wheel (!12
The grinding station according to claim 5, characterized in that the solid angle (S) between the machining area (11) and the machining area (11) is of the order of 0°. (6) In the lateral direction perpendicular to the axis (A) of the grinding wheel (12), the deflection plate (33)
11) The grinding station according to any one of claims 3 to j, characterized in that it has a curved profile with a concave surface oriented in the opposite direction to ff. (7) In the longitudinal direction parallel to the axis (A) of the grinding wheel (12), the deflection plate (33) has a curved profile with a concave surface oriented in the opposite direction to the machining area (ti) of the grinding wheel (12). A grinding station according to any one of claims 3 to 6, characterized in that the grinding station has: (8) Claims 3 to 3, characterized in that the deflection plate (33) extends from the inner surface of the housing (10) in the transverse direction perpendicular to the axis (A) of the grinding wheel (12). The grinding station according to any one of Item 7. (9) Any of claims 3 to g, characterized in that the deflection member (33) of the rotary wheel (33) is distributed from the injection area (12) of the grinding wheel (12) to the processing area (11). The grinding station according to item 7/. ) The grinding station according to any one of claims 3 to 7, characterized in that the injection device (29) extends in the tangential direction of the grinding wheel (12). Axis line (
A) has an injection pipe (30) extending long in parallel with the grinding wheel (12).
12) The grinding station according to any one of claims 3 to IO, wherein the grinding station is disposed directly below the front generatrix of claim 12). (6) A supply section for hot gas fluid, such as air, is arranged above the processing area (11) of the grinding wheel (12), according to any one of claims 1 to 2. grinding station. (To) The housing (10) forms a flat surface (P) for supporting the open hood (19) above the processing area (ii) of the grinding wheel (12), and... (1
A passage (35) for the hot gas fluid to be used is formed in the inside of the hood (19), and the passage (35) is opened to the internal volume medium pressure of the open hood (19) and close to the machining surface (P). 73. A grinding station according to claim 72, characterized in that: Q◆Special df, gate search range 1, characterized in that the passage (35) is opened diagonally to the machining surface (P) and on the upstream side of the machining area (11) of the grinding wheel (12). [31m
Grinding station as described. u9 The first range of the special/f edge, characterized in that the passage (35) is opened near the wall (37) of the i#FI hood (19), which has the same slope as the passage (35). ≠Grinding station listed at the top. 01 Processing t (p) to o through M (35) output D (38
) is formed into a long hole shape parallel to the axis (A) of the grinding wheel (12). Claims 13-/
Grinding station q described in any 7 of item j. At the processing area (11) of the grinding wheel (12).
- Kuzing (10) forms a protrusion (18), and the protrusion (1
8) extends backward from the machining area (11) first, and the protrusion (1
8), there is an injection device (
77. The grinding stake according to any one of claims 1 to 76, characterized in that: 46) is provided. (Incorporated Foundation) The grinding wheel (12) is installed inside the housing (10) on the downstream side of the processing area (11) of the grinding wheel (12).
) is preferably an injector (40) for cleaning
A patent characterized in that a space is formed between the lower part of the housing (10) and the droplet directing (12), which is larger below the axis of the grinding wheel (12) than above it. A grinding station according to any one of claims 1 to 11. (a) Each side plate (16) of the housing (IO) is reinforced by an annular lip (48), and the annular rib (48) projects in the axial direction toward the grinding wheel (12). ) to form a deflection member. The grinding station according to any one of the following paragraphs.