JP2002137142A - Chip collecting device for lathe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chip collecting device for a lathe formed that a flow of cutting oil is improved and a maintenance and inspection work, especially a work to scrape out accumulated chips is facilitated, and the availability factor of the lathe is improved. SOLUTION: The chip collecting device comprises a rigid receiving plate part 35 situated below the cutting part A situated of the lathe and receiving chips 51 generated at the cutting part and dripping and cutting oil 7 fed to the cutting part A and flowing down; a porous plate part 21' situated at the side of the rigidity receiving plate part 35; and a screen part 39 situated on the under surface side of the porous plate part 21'.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chip collecting device for a lathe, and more particularly to a device for improving the flow of cutting oil and facilitating a cleaning operation such as a scraping operation of accumulated chips.
The present invention relates to a machine capable of improving the operation rate of a lathe.

[0002]

2. Description of the Related Art A conventional chip collecting apparatus 101 for a lathe.
Has, for example, a configuration as shown in FIG. First, there is a chip collecting device main body 103, and a woven wire mesh 105 is attached to the bottom surface of the chip collecting device main body 103. A pair of grips 107, 107 (only one side is shown in FIG. 6) is attached to the chip collecting device main body 103.

[0003] The chip collecting apparatus 101 having the above-mentioned configuration is arranged so as to be able to enter and exit below a cutting portion of a lathe. Then, chips generated in the cutting section and cutting oil supplied to the cutting section are dropped and collected in the chip collecting apparatus main body 103 of the chip collecting apparatus 101. The internal chips are collected on the woven wire mesh 105 of the chip collecting device 101, and the other fine chips and cutting oil are dropped and collected in a cutting oil tank (not shown) disposed thereunder. Then, in the cutting oil tank, the chips are separated and collected, whereby the purified cutting oil is supplied to the cutting portion again.

The woven wire mesh 1 of the chip collecting device 101
The collected chips gradually accumulate on the surface 05. As a result, the flow of the cutting oil gradually decreases. Therefore, an operation of taking out the chip collecting device 101 and removing the chips accumulated on the woven wire mesh 105 is performed, whereby the woven wire mesh 1 of the chip collecting device 101 is removed.
05 is reproduced and mounted again. This type of operation is performed at an appropriate timing during continuous operation.

[0005] Separately, a low cutting oil level alarm may be generated. This is an alarm output when the level of the cutting oil in the cutting oil tank becomes lower than a preset level due to the deterioration of the flow of the cutting oil in the chip collecting device 101. Even when such a low cutting oil level alarm is generated, the lathe is stopped and the above-described chip collecting apparatus 101 is regenerated.

[0006]

According to the above-mentioned conventional configuration, there are the following problems. As described above, the woven wire mesh 1
Chips accumulate on the surface 05, and these accumulated chips are scraped out during maintenance and inspection work. However, some of the chips are caught by the eyes of the woven wire mesh 105 and cannot be removed by the scraping operation. In particular, curling chips are generated in the cutting process on the lathe, and such curling chips are caught in the eyes of the woven wire mesh 105 and cannot be easily removed. Such chips remain on the woven wire mesh 105 without being taken out, and eventually the regeneration of the woven wire mesh 105 becomes insufficient and the initial filtration efficiency cannot be maintained. When used repeatedly in such a state, a cutting oil level drop alarm is generated at a relatively early timing. In other words, there is a problem that the chip collecting device must be maintained and inspected frequently, which leads to the necessity of complicated work and the reduction of the operation rate of the lathe. Was. Further, as described above, some of the chips are caught by the eyes of the woven wire mesh 105 and cannot be taken out by ordinary scraping work. There was also a problem that it was difficult.
In addition, chips may include scraps of the work. This is the leading or trailing end of the work, which is an odd part that is discarded without being processed. These scraps are directly woven wire mesh 1
There is also a problem that the woven wire mesh 105 may be damaged if dropped on the wire mesh 05.

The present invention has been made on the basis of the above points, and its object is to improve the flow of the cutting oil and to facilitate the maintenance and inspection work, especially the scraping work of the accumulated chips. Accordingly, an object of the present invention is to provide a chip collecting device for a lathe capable of improving the operation rate of the lathe.

[0008]

According to a first aspect of the present invention, a chip collecting device for a lathe is provided at a position below a cutting portion of a lathe and generates and falls at the cutting portion. Receiving plate, receiving a chip to be cut and cutting oil supplied to the cutting portion and flowing down, a perforated plate provided on a side of the rigid receiving plate, and a lower surface of the perforated plate. And a metal net portion provided. In addition, a chip collecting device for a lathe according to claim 2 is:
2. The chip collecting device for a lathe according to claim 1, wherein the wire netting is installed in close contact with the lower surface of the perforated plate. According to a third aspect of the present invention, there is provided a chip collecting device for a lathe according to the first or second aspect, wherein the rigid receiving plate portion, the perforated plate portion, and the wire netting portion are integrated. , So that the collected chips can be scraped out by taking out from the lathe.

That is, in the case of the chip collecting device for a lathe according to the present invention, first, chips which are arranged below the cutting portion of the lathe and which are generated in the cutting portion and fall and are supplied to the cutting portion. The received cutting oil is received by the rigid receiving plate portion. Of the chips and cutting oil that have fallen on the rigid receiving plate, the scraps of the workpiece and the relatively large chips in the form of curls accumulate as they are, while the remaining chips and cutting oil are deposited on the side of the rigid receiving plate. It flows on the perforated plate part installed on the side. Chips flowing on the perforated plate and cutting oil larger than the holes provided on the inner perforated plate accumulate on the perforated plate, and other small chips and cutting oil enter the holes. Go. Then, the cutting oil falls through the hole and the wire mesh portion provided on the lower surface side, while the cutting oil that can pass through the inner wire mesh portion of the chip that has entered the hole passes therethrough, and the chip that cannot pass does not pass through the hole. It accumulates inside. At this time, it is conceivable to install the wire netting in a state in which it is in close contact with the lower surface of the perforated plate. In that case, chips do not accumulate between the perforated plate portion and the wire netting portion. It is also conceivable that the rigid receiving plate portion, the perforated plate portion, and the wire netting portion are integrated so as to be detachable from a lathe, and by taking out the chips, scraps can be scraped out and collected.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a diagram showing a state in which a chip collecting device and the like are arranged at a position below a cutting portion (indicated by reference symbol A in FIG. 1) of the automatic lathe. First, there is a guide bush 1, and a workpiece 3 held by a main shaft (not shown) arranged on the left side in the drawing by the guide bush 1.
Is rotatably supported. A tool rest (not shown) is arranged near the guide bush, and a cutting tool 5 is attached to the tool rest. Then, desired cutting is performed by causing the cutting tool 5 to relatively act on the work 3 with the main shaft rotated.

A cutting oil (coolant) 7 is supplied to the cutting portion A. That is, there is a cutting oil tank 9, and the cutting oil 7 is stored in the cutting oil tank (coolant tank) 9. A cutting oil supply pipe 11 is connected to the cutting oil tank 9, and a cutting oil supply pump 13 is inserted into the cutting oil supply pipe 11. The cutting oil supply pipe 11 is extended to a position immediately above the cutting portion described above, and a nozzle 15 is connected to a tip of the cutting oil supply pipe 11 via a bellows pipe 13. Then, the cutting oil tank 9 is moved by the cutting oil supply pump 13.
The cutting oil 7 is sucked and pressurized and supplied to the cutting portion A via the cutting oil supply pipe 11, the bellows pipe 13, and the nozzle 15.

A chip collecting device 17 is provided immediately below the cutting portion A. The chip collecting device 17 has the following configuration. First, there is a collecting device main body (chip tank) 19, which is in the shape of a rectangular parallelepiped, and has a bottom wall 21 and a vertical wall 4 which stands upward from the bottom wall 21. Individual side walls 23, 25, 2
7, 29. A pair of grips 31 and 33 are respectively attached to the upper side of the left and right sides on the side wall 29 side. The pair of grips 31, 33
And puts the chip collecting device 17 in and out.

The bottom wall 2 on the left side of the collecting device main body 19 in the drawing.
A steel plate 35 as a rigid receiving plate portion is provided on 1. The steel plate 35 has a thickness (t) of 1.2 mm, and has a rigidity enough to withstand the falling of the chips 51 from above, particularly, a relatively large object such as the end material 51 a of the work 3. It is equipped. This steel plate 35
Is provided on the left side in the figure as described above.
That is, the chip 51 is installed immediately below the cutting portion A, and the chips 51 generated in the cutting portion A first fall onto the steel plate 35.

The bottom wall 2 located on the right side of the steel plate 35 in the drawing.
1 is a punched steel plate as a perforated plate
21 '. This stamped steel plate 21 'has a thickness (t') of 1.2 mm and a diameter (D) of 2 mm.
A large number of holes 37 are formed at a pitch (P) of 3.5 mm. In the figure, the steel plate 35 is shown for convenience of explanation.
Thickness (t), thickness (t ') of stamped steel plate 21', hole 37
Is schematically shown in a larger size than the actual size.

A woven wire mesh 39 as a wire mesh portion is attached to the lower surface side of the stamped steel plate 21 '. As shown in FIG. 4, the woven wire mesh 39 is fixed to the back surface of the stamped steel plate 21 'by spot welding via a plurality of fixing plate members 41. The woven wire mesh 39 is made by weaving a piano wire having a wire diameter of 0.32 mm,
The mesh is 24. Here, the mesh means the number of meshes of the sieve having a length of 1 inch (2.54 cm).

The operation will be described based on the above configuration. Chips 51 of various sizes generated in the cutting portion A fall together with the cutting oil 7 into the collecting device main body 19 of the chip collecting device 17 disposed immediately below. At that time, first, the steel plate 35
Fall on. As described above, there are various sizes of chips 51 generated in the cutting portion A. Specifically, as shown in FIG. 1 and FIG.
a, relatively large chips 51b having a curl shape, chips 51c having a medium size, relatively small chips 51d having a chip shape, and the like. In addition, the above-mentioned end material 51a is a leading and trailing end of the work 3 and means an incomplete residual material that is discarded without being processed.

The chips 51 and the cutting oil 7 dropped on the steel plate 35
Among them, the end material 51a of the work 3 and the relatively large curled chips 51b are deposited on the steel plate 35 as they are.
These scraps 51a and curl-like relatively large chips 5
By the deposition of 1b, a new coarse filter is formed on the steel plate 35, whereby the subsequent collection of relatively large chips 51b having a curl shape is more effectively performed. , Relatively large chips 5 curling
1b can be restricted from moving downstream. Further, since a new filter body is formed on the steel plate 35, the flow of the cutting oil 7 is not impaired. This is because the coarseness of the filter body is relatively large. On the contrary, since the relatively large chips 51b having a curl shape can be effectively collected on the steel plate 35 as described above, the relatively large chips having a curl shape can be effectively collected. 51
It is possible to prevent b from flowing down to the subsequently punched steel plate 21 'and the woven wire mesh 39 side. This is stamped steel plate 2
This is effective in maintaining the filtration efficiency on the side of 1 'and the woven wire mesh 39.

The chips 51 having a size such that they do not accumulate on the steel plate 35 and flow out together with the cutting oil 7, that is, the chips 51 d having a medium size and the relatively small chips 51 d which are in the form of chips are formed by the cutting oil. 7 and flows down to the punched steel plate 21 'side. Then, the chips 51 larger than the holes 37 of the inner punched steel plate 21 ', that is, the chips 51c of a medium size are deposited on the punched steel plate 21' as they are.
On the other hand, chips 51d smaller than the holes 37 of the stamped steel plate 21 ', that is, chips
Get inside. To explain this point in detail, chips 51d in the form of chips smaller than the holes 37 of the punched steel sheet 21 'enter into the holes 37 together with the cutting oil 7, which is more remarkable as the holes 37 arranged on the upstream side. , The chip 37 no longer has such a chip 51
There is no penetration of d, and only the cutting oil 7 containing fine chips enters.

Of the chips 51 d that have entered the hole 37, those that pass through the mesh of the woven wire mesh 39 provided below the chips 51 d pass along with the cutting oil 7 and fall into the cutting oil tank 9. Collected. On the other hand, chips 51 d having a size that cannot pass through the mesh of the woven wire mesh 39 are accumulated in the holes 37 as they are.

It should be noted here that neither the chips 51c deposited on the stamped steel plate 21 'nor the chips 51d entering or accumulating in the holes 37 are curled. Most are relatively small chips. Therefore, a situation in which it is hard to be scraped out by the hole 37 or to be hooked in the woven wire mesh 39 side does not occur.

Hereinafter, the chip 51 is collected in the chip collecting device 17 by continuously performing the same operation, and the cutting oil 7 and fine chips are collected in the cutting oil tank 9. Will be gathered. Chips are separated and removed in the cutting oil tank 9, whereby the cleaned cutting oil 7 is reused.

On the other hand, the chips 51 collected in the chip collecting device 17 are periodically scraped out. That is,
During the continuous operation, maintenance / inspection work is performed at an appropriate timing. At this time, the chip collecting device 17 is pulled out from the lathe by grasping the pair of grips 31, 33. Then, the chips 51 accumulated inside are scraped out. At this time, since the relatively large chips 51b having a curl shape are deposited on the steel plate 35, they can be easily taken out without being caught in the taking out. In addition, the scraping of the medium-sized chips 51c deposited on the stamped steel plate 21 'is also performed.
It is simple because it does not catch on the hole 37 of 1 '. The chips 51d stored in the plurality of holes 37 of the stamped steel plate 21 'can be easily taken out by turning the chip collecting device 17 upside down.
At that time, there is no possibility that the chips 51d are caught. As described above, the chip, which has conventionally been a problem of being caught on the woven wire mesh, that is, the relatively large chip 51b having a curled shape can be almost collected on the steel plate 35,
The problem of the relatively large chips 51b having a curled shape being caught can be effectively solved.

According to the present embodiment, the following effects can be obtained. First, maintenance / inspection work of the chip collecting device 17, in particular, removal or scraping out of the accumulated chips 51 becomes easy. That is, the relatively large chips 51b in the form of curls are deposited on the steel plate 35, and their removal is simple, since they are not particularly caught. The medium-sized chips 51c are deposited on the punched steel plate 21 ', and the scraping is not particularly caught. That is, there is no state in which the relatively large curled chips 51b are caught on the woven wire mesh and cannot be easily scraped out as in the related art. This means that relatively large chips 51b having a curl shape are collected and deposited on the steel sheet 35, and thereafter, the punched steel sheet 21 'and the woven wire mesh 39 are used.
This is because they are not allowed to flow down to the side. Therefore, it becomes possible to maintain the filtration efficiency by regenerating the chip collecting device 17 to a state close to the original state by the maintenance and inspection work. As a result, the occurrence of a situation in which a cutting oil level decrease alarm is generated at a relatively early timing can be eliminated, and the frequency of maintenance / inspection work can be suppressed, and eventually, the operation rate of the lathe can be improved.
Further, since the chips 51 first fall onto the steel plate 35 having sufficient rigidity, there is no problem even if a relatively large object such as the end material 51a of the work 3 falls. Also, woven wire mesh 3
9 is installed in close contact with the lower surface of the stamped steel plate 21 ′, so that chips 51 do not accumulate between the woven wire mesh 39 and the stamped steel plate 21.

The present invention is not limited to the above embodiment. First, in the above-described embodiment, the level of the steel plate 35 as the rigid receiving plate portion is one step higher than the level of the punched steel plate portion 21 'as the perforated plate portion, but it may be provided flush. In the above-described embodiment, an automatic lathe provided with a guide bush has been described as an example. However, the present invention is not limited to this and can be applied to various lathes.

[0025]

As described above in detail, according to the chip collecting apparatus for a lathe according to the present invention, first, the work of removing or scraping the accumulated chips becomes easy. That is, the chips are deposited on the receiving plate and the perforated plate, and the operation of scraping the chips from the receiving plate and the perforated plate is easy. In other words, this is different from the conventional state in which relatively large chips in a curl shape are caught on the woven wire mesh and cannot be easily scraped out. Therefore, the initial filtration efficiency of the chip collecting device can be maintained, and eventually, the operation rate of the lathe can be improved. Further, when the wire netting is placed in close contact with the lower surface of the perforated plate, chips do not accumulate between the perforated plate and the wire netting. Since the chips first fall on the receiving plate having sufficient rigidity, there is no problem even if a relatively large object such as, for example, a work piece is dropped.

[Brief description of the drawings]

FIG. 1 is a view showing an embodiment of the present invention, and is a view showing a state in which a chip collecting device and a cutting oil tank are arranged below a cutting portion of a lathe.

FIG. 2 is a view showing an embodiment of the present invention, and is a plan view showing a configuration of a chip collecting device.

FIG. 3 is a view showing one embodiment of the present invention, and is a cross-sectional view showing a configuration of a chip collecting device.

FIG. 4 is a view showing one embodiment of the present invention, and is a bottom view showing a configuration of a chip collecting device.

FIG. 5 is a view showing an embodiment of the present invention and is a view for explaining an operation of the chip collecting device.

FIG. 6 is a view showing a conventional example, and is a cross-sectional view showing a configuration of a chip collecting device.

[Explanation of symbols]

 A Cutting part 3 Work 5 Cutting tool 7 Cutting oil 17 Chip collecting device 19 Collection device main body 21 Bottom wall 21 'Punched steel plate (perforated plate portion) 35 Steel plate (rigid receiving plate portion) 37 Hole 39 Woven wire mesh (wire mesh portion) 51) Chips 51a Pieces of the work 51b Curled relatively large chips 51c Medium-sized chips 51d Chip-shaped relatively small chips

Claims (3)

[Claims] 1. A rigid receiving plate portion which is disposed below a cutting portion of a lathe and receives chips generated and dropped in the cutting portion and cutting oil supplied to the cutting portion and flowing down, A chip collecting device for a lathe, comprising: a perforated plate portion provided on a side of a rigid receiving plate portion; and a wire mesh portion provided on a lower surface side of the perforated plate portion. 2. The chip collecting device for a lathe according to claim 1, wherein the wire mesh portion is installed in a state of being in close contact with the lower surface of the perforated plate portion. 3. The chip collecting device for a lathe according to claim 1, wherein the rigid receiving plate portion, the perforated plate portion, and the wire netting portion are integrated to be detachable from the lathe, A chip collecting device for a lathe, wherein chips collected by taking out from a lathe can be scraped.