JP4051499B2 - Sliding surface wiper device for machine tools - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sliding surface wiper device for a machine tool.
[0002]
[Prior art]
The machine tool wiper device is provided at both ends in the moving direction of the movable body moving along the sliding surface to prevent chips and foreign matter from entering the sliding portion of the movable body, A wiper that slides on the sliding surface is provided. In particular, in recent years, the feed rate of movable bodies has increased and high-pressure coolant has come to be used, and various types of wiper devices have been proposed to protect the sliding surface from chips of high-hardness materials. Has been.
[0003]
In general, there are many single wiper type with only one wiper, but double wiper type with double wiper, a combination of wiper and metal scraper, between two wipers There are those that flow cleaning coolant (see, for example, Patent Document 1, Patent Document 2, and Patent Document 3).
[0004]
[Patent Document 1]
Japanese Utility Model Publication No. 44-1909 [0005]
[Patent Document 2]
Japanese Utility Model Publication No. 46-25022 [0006]
[Patent Document 1]
Japanese Patent Laid-Open No. 3-121745
[Problems to be solved by the invention]
The wiper device is basically a combination of consumables and needs to be replaced periodically. However, the wiper device is provided in a hidden place under the sliding surface protection cover, and the conventional wiper device has a plurality of parts individually attached to the movable body, so that the replacement work is difficult. The replacement time may be delayed, and foreign matter may enter and damage the sliding surface.
[0008]
In addition, although lubricating oil is accumulated in the oil groove of the movable body, since there is no oil at the edge of the movable body where the most oil film is required, there is no beginning of wear between the movable body and the sliding surface. May be.
[0009]
An object of the present invention is to provide a sliding surface wiper device for a machine tool that solves the above-described problems, can be easily replaced, and can effectively prevent wear between the movable body and the sliding surface.
[0010]
[Means for Solving the Problems and Effects of the Invention]
The sliding surface wiper device for a machine tool according to claim 1 is a sliding surface wiper device in which wipers provided at both ends in the moving direction of the movable body of the machine tool are in sliding contact with the sliding surface. includes a wiper unit inserted and extraction cartridge type to the unit mounting portions provided at both ends, the unit mounting portion extends in a direction perpendicular to the moving direction of the movable member facing each other and sliding A pair of upper and lower grooves formed in parallel with the surface is formed so that the wiper unit can be inserted and guided from both the upper and lower sides during insertion and removal, and the wiper unit is provided with a wiper that slides on the sliding surface. The lubricating oil reservoir space is formed between the movable body and the wiper.
[0011]
The wiper unit is pre-installed with wiper and other necessary parts. All the parts can be attached simply by attaching the wiper unit to the unit mounting part, all by simply removing the wiper unit from the unit mounting part. The parts can be removed.
[0012]
With the wiper unit attached to the unit mounting portion, the wiper is in sliding contact with the sliding surface, and a lubricating oil reservoir space is formed between the movable body and the wiper, and the lubricating oil is stored in this space. Preferably, the lubricating oil is forcibly supplied to the lubricating oil reservoir space by the lubricating oil supply means.
[0013]
According to the apparatus of the first aspect, since the wiper unit is of a cartridge type that can be attached to and detached from the unit mounting portion, the wiper apparatus can be replaced very easily. It is difficult for foreign matter to enter due to delay in replacement. Also, a lubricating oil reservoir space is formed between the end of the movable body and the wiper, and since there is always lubricating oil on the sliding surface of this part, mutual wear of the movable body and the sliding surface is prevented, Slip is suppressed.
[0014]
The apparatus according to claim 1, wherein a metal scraper is preferably provided outside the wiper.
[0015]
A sliding surface wiper device for a machine tool according to a second aspect is the device according to the first aspect, wherein the wiper unit is provided with a first wiper and a second wiper spaced apart toward the outside in the moving direction of the movable body. The lubricating oil reservoir space is formed between the movable body and the first wiper, and the coolant passage is formed between the first wiper and the second wiper. .
[0016]
In a state where the wiper unit is attached to the unit mounting portion, the two wipers are brought into sliding contact with the sliding surface, and the coolant is supplied to the coolant passage formed therebetween.
[0017]
According to the apparatus of the second aspect, chips and foreign matters that could not be removed by the wiper can be removed by the coolant supplied to the coolant passage between the two wipers.
[0018]
The apparatus according to claim 2, wherein a metal scraper is preferably provided outside the second wiper.
[0019]
For example, a wiper unit is a case in which necessary parts such as a wiper are pre-installed in the case. All parts can be attached simply by attaching the case to the unit mounting part. All parts can be removed simply by removing them. In addition, a groove serving as a guide for the wiper unit case is formed in the unit mounting portion, and the wiper unit can be mounted on the unit mounting portion simply by fitting the case to the groove from a predetermined direction. Further, when the case of the wiper unit is fitted into the groove of the unit mounting portion, the positioning of the case is performed by a predetermined part of the case, for example, an adjustment screw attached to the case so that the position of the case can be adjusted. In this state, the case can be fixed to the unit mounting portion using a bolt or the like.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment in which the present invention is applied to a two-saddle NC lathe will be described with reference to the drawings.
[0021]
FIG. 1 shows a pair of rails (R1) (R2) provided on the lower side of a slant bed (1) of a 2-saddle NC lathe, and a lower saddle (2) which is a movable body moving along these rails. The sliding surface wiper device (3) provided on the saddle (2) is shown. In the following description, the moving direction of the saddle (2) is the left-right direction, the right side viewed from the left side is the front, and the opposite side is the rear. The rails are collectively referred to by a symbol (R), and when they need to be distinguished, they are referred to as a front rail (R1) and a rear rail (R2). Although not shown, a pair of front and rear rails parallel to the rails (R) are provided on the upper side of the bed (1), and the upper saddle moves along these rails.
[0022]
The two rails (R) have the same structure, an upper sliding surface (4a) that faces diagonally upward and forward, and a front sliding surface (4b) that is located on the lower side of the front end and faces diagonally downward and forward, A lower sliding surface (4c) located at the rear of the lower end and facing diagonally downward and rearward. The sliding surface is generically designated by reference numeral (4). Each sliding surface (4) is inclined 45 degrees with respect to the horizontal plane.
[0023]
The wiper device (3) is provided on the left and right end surfaces (2a) of the saddle (2) of the portion supported by each rail (R). Since the wiper device (3) provided in the saddle (2) has the same structure, one of them will be described below with reference to FIGS.
[0024]
FIG. 2 is an exploded perspective view of the wiper device (3) provided on the left end surface (2a) of the saddle (2) supported by the front rail (R1), and FIG. 3 is the assembled wiper device (3). FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 3. Moreover, FIGS. 4-8 is sectional drawing which follows each cutting line of FIG. 3 and FIG. 4, as it describes in the column of brief description of drawing.
[0025]
As shown in FIGS. 1 to 3, the wiper device (3) is composed of a base (5) which is a unit mounting portion fixed to the saddle end surface (2a), and a cartridge type removable from the base (5). And a wiper unit (6).
[0026]
As shown in detail in FIGS. 2 to 5, the base (5) includes a base wall portion (7) fixed to the end surface (2a) of the saddle (2) by an appropriate means such as a bolt (not shown), and a base wall. An upper wall portion (8) projecting leftward from the upper edge of the portion (7) and a lower wall portion (9) projecting leftward from the lower edge of the base wall portion (7) are provided. The base wall portion (7) has a shape in which a part of a rectangle is removed in accordance with the cross-sectional shape of the rail (R), and has a short U shape on the lower side when viewed from the left side. The upper wall portion (8) and the lower wall portion (9) are parallel to the upper sliding surface (4a) and the lower sliding surface (4b) of the rail (R). A protrusion (10) protruding downward is integrally formed on the left edge of the upper wall (8), and is formed between the upper part of the protrusion (10), the upper wall (8) and the base wall (7). An upper guide groove (11) for mounting the unit is formed. A protrusion (12) protruding upward is integrally formed on the left edge of the lower wall (9), and is formed between the lower portion of the protrusion (12), the lower wall (9) and the base wall (7). A lower guide groove (13) for mounting the unit is formed.
[0027]
The wiper unit (6) is fixed between the case (14), the wiper holding member (15) fixed to the left part of the case (14), and the case (14) and the holding member (15). The inner wiper (first wiper) (16), the outer wiper (second wiper) (17) fixed to the left side of the holding member (15), and the metal fixed to the left side of the outer wiper (17) And a scraper (18). The inner wiper (16) has an inner / outer dual structure including an inner wiper (19) and an outer wiper (20).
[0028]
The case (14) is substantially the same shape as the base wall part (7) of the base (5), and the base wall part (21) extending along the inner surface of the base wall part (7) and the upper edge of the base wall part (21). An upper wall portion (22) that protrudes to the left and extends along the inner surface of the upper wall portion (8) of the base (5), and a lower wall of the base (5) that protrudes to the left from the lower edge of the upper wall portion (22) A lower wall portion (23) along the inner surface of the portion (9), and a front wall portion (24) that closes a front end opening between the three wall portions (21), (22), and (23). .
[0029]
The holding member (15), the wiper (16) (17), and the scraper (18) are also substantially the same shape as the case (14), and the lower side as viewed from the left side has a short U-shape, the upper part, the lower part and these It consists of a front side part located between the front ends of. The upper part of the wiper (16) (17) and scraper (18) is on the upper sliding surface (4a) of the rail (R), the front part is on the front sliding surface (4b), and the lower part is on the lower sliding surface Each is in sliding contact with the surface (4c).
[0030]
As shown in detail in FIGS. 4 and 5, a lubricating oil sump space (between the portion of the inner wiper (16) slidably contacting the upper sliding surface (4 a) and the left end surface (2 a) of the saddle (2) 25) is formed. As shown in detail in FIGS. 5 and 6, a pin (27) urged by a spring (26) in a direction approaching the front sliding surface (4b) on the front side portion of the base base wall (7). The block (28) fixed to the rear end of the pin (27) is in pressure contact with the front impulse face (4b) by the elastic force of the spring (26). A space between the inner wiper (16) above the block (28) and the movable body end surface (2a) is a lubricating oil reservoir space (25). As shown in detail in FIGS. 4 and 5, the lubricating oil reservoir space (25) includes a lubricating oil passage (29) formed in the base base wall (7) and a lubricating oil passage formed in the saddle (2). Via (30), it communicates with a lubricating oil supply pipe (31) connected to the saddle (2).
[0031]
As shown in detail in FIGS. 4 and 7, a coolant (coolant) passage (32) is formed between the inner wiper (16) and the outer wiper (17) inside the holding member (15). . A coolant supply pipe (33) is connected to the upper surface of the upper wall part (8) of the base (5), and the upper wall part (8) has a coolant passage (34) communicating with the supply pipe (33) and a plurality of the coolant passages (34). A coolant passage (35) that is branched and opened at the lower surface of the left end of the upper wall (8) is formed. The coolant passage (32) between the wipers (16) and (17) includes a coolant passage (36) formed in the holding member (15), a coolant passage (37) formed in the case upper wall portion (22), and a base. The passage (34) communicates with a coolant passage (38) formed in the upper wall (8). As shown in detail in FIG. 7, a series of coolant is formed on the holding member (15), the case lower wall portion (23) and the base lower wall portion (9) facing the lower portion of the front sliding surface (4b). Discharge holes (39), (40) and (41) are formed.
[0032]
As shown in detail in FIGS. 2, 5, and 8, a mounting plate (42) is fixed to the front surface of the front wall portion (24) of the case (14) by bolts (43). The mounting plate (42) protrudes to the right side from the case front wall (24), and position adjustment bolts (44) and (45) are screwed from the front side to the upper and lower portions of this portion and project backward. Also, the mounting bolt (47) is passed through the bolt hole (46) formed in the portion of the mounting plate (42) between the two adjusting bolts (44) (45), and the adjusting bolt (44) (45 ) With the front end (rear end) of the base plate pressed against the front end surface of the base base wall (7), tighten the mounting bolt (47) into the screw hole (48) formed on the same surface to tighten the wiper unit. (6) is fixed to the base (5).
[0033]
The holding plate (15), the wipers (16) (17), and the scraper (18) of the wiper unit (6) are fixed to the case (14) in advance by appropriate means such as a bolt (not shown). In the drawing, the holding plate (15), the wipers (16), (17) and the scraper (18) are shown integrally, but these are divided into a plurality of parts as necessary for the convenience of assembly. And fixed to the case (14).
[0034]
When attaching the wiper unit (6) to the base (5), use the upper and lower grooves (11) and (13) of the base (5) as a guide, and place the case (14) from the diagonally lower front to the inside of the base (5). insert. When the rear end of the adjustment bolt (44) (45) hits the front end surface of the base base wall (7), the case (14) stops.In this state, adjust the position of the adjustment bolt (44) (45). Then, the positions and angles of the wipers (16) (17) and the scraper (18) with respect to the sliding surface (4) of the rail (R) are adjusted. When the adjustment is finished, the mounting bolt (47) is tightened, and the rear end of the adjustment bolt (44) (45) is brought into pressure contact with the front end surface of the base base wall (7). Secure to (14). As a result, the wipers (16), (17) and the scraper (18) come into sliding contact with the sliding surface (4) appropriately.
[0035]
During the operation of the lathe, the lubricating oil is forced into the lubricating oil reservoir space (25) between the saddle (2) and the inner wiper (16) through the lubricating oil passage (30) (29) from the lubricating oil supply pipe (31). Is supplied. For this reason, there is always lubricating oil on the upper sliding surface (4a) of the rail (R), thereby preventing wear between the saddle (2) and the sliding surface (4), and slipping. Is suppressed. Also, coolant is supplied from the coolant supply pipe (33) to the coolant passage (32) between the wipers (16) and (17) through the coolant passages (34), (38), (37) and (36), and the coolant discharge hole ( 39) It is discharged downward through (40) and (41). The coolant flowing through the passage (32) removes chips and foreign matters that could not be removed by the wipers (16) and (17).
[0036]
When removing the wiper unit (6) from the base (5) for replacement or the like, it is only necessary to loosen the mounting bolt (47) and pull the case (14) diagonally downward and forward from the inside of the base (5).
[0037]
As described above, the wiper unit (6) can be easily attached to and detached from the base (5).
[0038]
The configuration of each part of the wiper device (3) is not limited to that of the above embodiment, and can be changed as appropriate.
[0039]
Of course, the present invention can also be applied to machine tools other than 2-saddle NC lathes.
[Brief description of the drawings]
FIG. 1 shows an embodiment in which the present invention is applied to a 2-saddle NC lathe, and is a perspective view showing a lower saddle and a wiper device provided on the lower saddle.
FIG. 2 is an exploded perspective view showing an enlarged view of one wiper device of FIG. 1;
3 is a partially cutaway enlarged side view of the one wiper device of FIG. 1 as viewed from the left side (partially cut away arrow view along line III-III in FIG. 4).
4 is a cross-sectional view taken along the line IV-IV in FIG. 3;
5 is a cross-sectional view taken along line VV in FIG. 4. FIG.
6 is a cross-sectional view taken along the line VI-VI in FIG. 3;
7 is a cross-sectional view taken along line VII-VII in FIG.
8 is a cross-sectional view taken along line VIII-VIII in FIG.
[Explanation of symbols]
(R1) (R2) rail
(2) Lower saddle
(2a) Lower saddle edge
(3) Wiper device
(4a) (4b) (4c) Sliding surface
(5) Base
(6) Wiper unit
(16) Inner wiper
(17) Outside wiper
(25) Lubricant reservoir space
(32) Coolant passage

Claims (2)

A sliding surface wiper device in which wipers provided at both ends in the moving direction of the movable body of the machine tool are in sliding contact with the sliding surface,
It has cartridge-type wiper units that can be inserted into and removed from the unit mounting parts provided at both ends of the moving direction of the movable body. The unit mounting parts face each other and are perpendicular to the moving direction of the movable body A pair of upper and lower grooves formed in parallel with the sliding surface is formed so that the wiper unit can be inserted and guided from both the upper and lower sides during insertion and removal. A sliding surface wiper device for a machine tool, characterized in that a sliding wiper is provided and a lubricating oil reservoir space is formed between the movable body and the wiper.   The wiper unit is provided with a first wiper and a second wiper spaced apart from each other in the moving direction of the movable body, and a lubricating oil reservoir space is formed between the movable body and the first wiper. The sliding surface wiper device for a machine tool according to claim 1, wherein a coolant passage is formed between the first wiper and the second wiper.

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