JP2688616B2 - Biaxial machining method for work - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention uses two spindles, one turret and two or more cutting tools to form two workpieces, form a point, etc. The present invention relates to a work method in which work processing is performed in parallel.

This is a particularly effective processing technology for processing bearings and spool shafts.

(Prior art) Conventionally, the inner ring and outer ring such as bearings are machined by using multiple single-purpose boards for each machining process and multiple NC machines capable of multiple machining. There is a processing method to be performed.

(Problems to be Solved by the Invention) Both the single-purpose board and the machining method using the NC machine are sequential processing methods in which one single-purpose board and the NC machine process one work.

In the former processing method using a single-purpose board, a dedicated single-purpose board is required for each process and each part, and a large number of single-purpose boards are required to process one workpiece, which requires a large occupied space. Also, it requires a large number of operators to operate and manage it, which increases the processing cost, and unlike NC machines, it is difficult to expect high-precision processing. Also, since many single-purpose boards are used serially, setting errors in each single-purpose board
There is a drawback in that the variation in accuracy greatly affects the defective rate of the whole work and the yield is low. Therefore, quality control must be performed for each single-purpose board, which imposes a heavy burden on quality control. Further, there is a drawback that the number of times of loading and unloading of the work increases, and the work is damaged in the process.

Also, in the latter machining method using NC machines, multiple machines can be machined with one machine, so the number of NC machines required for machining one work piece can be reduced, the machining accuracy of each machining is high, and it occurs between processes. There is little variation in setting error and accuracy, and quality control is also reduced. However, since the multiple machining process on the NC machine is serial machining of each workpiece, the number of workpieces that can be processed per unit time is small, and in order to process the required amount of workpieces within the required time, We have to increase the number of machines and perform parallel processing, so the equipment cost is rather high and the reduction of processing cost is not sufficient,
After all, there was a drawback that the machine occupies a large space.

The object of the present invention is to reduce the number of processing machines required for processing one work, and to increase the number of processing operations per machine while achieving high-precision processing. Another object of the present invention is to provide an excellent machining method for a workpiece, which requires only a small number of machining machines, can occupy a small space, and can reduce machining costs such as labor costs.

(Means for Solving the Problem) The gist of the present invention which has solved the problem is as follows: 1) chucking a workpiece of an outer ring of unprocessed bearings on each of two spindles provided in one machining device; Bearings that perform raceway groove machining by offsetting inner raceway bites from the center of the spindle toward each other and mounting them on one tool post, and then while the spindle is operating, operate the tool post under NC control as shown in the following Outer ring raceway groove processing method.

: Process of moving the inner raceway groove bite in front of the two main spindles so that the center of the bite is inside the center of the two main spindles: Insert the inner raceway groove bite into the work and insert it into the right inner raceway groove bite On the other hand, the process of correcting the diameter and position of the raceway groove to be processed: Moving the inner raceway tool bit on the right side to the left with offset, and making the inner raceway tool bit on the right side contact the work piece to perform inner raceway groove machining Process: Returning the inner raceway groove tool to the offset position: Next, correcting the diameter and position of the raceway groove to be machined for the left inner raceway groove tool: The same as the left inner raceway tool bit offset to the right Machining process of moving and contacting the work with the inner work groove groove of the left work: Process of returning both inner raceway groove bite to the offset position and retracting to separate from the work 2) One machining device Each of the two main spindles provided is chucked with the workpiece of the inner ring of the bearing that has not been machined, and a pair of outer raceway groove tools is attached to the tool rest at the outer position in the direction away from the machined end of the outer peripheral machined surface of each workpiece. Next, a raceway groove machining method for the bearing inner ring is performed, in which the tool post is operated by NC control while operating the spindle as described below to perform outer diameter raceway groove machining on the inner ring work.

: Process of moving the outer raceway bite in front of the two main spindles so that the two outer raceway bites are located at the outer positions in the direction away from each other on the outer peripheral machining surface of the workpiece. Move to the outside of the work and correct the diameter and position of the raceway groove end of the inner ring of the right work to be processed with respect to the right outer raceway bite: Move the right outer raceway bite to the left, Machining process of making raceway groove machining on the right workpiece by contacting the work piece: Process of escaping the outer raceway tool bit to the right to return to the original position before machining before compensation on the outside of the work piece: On the right outer raceway tool bit On the other hand, the process of correcting the diameter and position of the raceway groove of the left workpiece to be machined: The machining process for machining the raceway groove of the left workpiece by moving the left outer raceway tool bit to the right: The outer raceway tool bit to the left Let go Step: Process of returning outer raceway groove tool to the retracted state 3) Chuck the work before separation of the bearing outer ring and inner ring to each of two spindles provided in one processing device, and a pair of inner diameter tool Offset from the center of the spindle toward each other, and attach them to one tool post.Then, while the spindle is operating, the tool post is operated by NC control as described below to perform inner diameter machining. Inner diameter processing method of work.

: Process of bringing the inner diameter bite in front of the spindle: Step of advancing the inner diameter bite in the work direction, and also inserting the correction of the radius of the inner ring of the right work into the right inner diameter bite: Advance the inner diameter bite in the work direction to move the inner ring of the right work Process to perform inner diameter machining: Process to retreat while releasing inner diameter tool: Process to correct radius of inner ring of left work on left inner diameter tool: Process to inner diameter work on left work while advancing inner diameter tool to work: Inner diameter tool Step of retreating while letting it escape 4) Chuck the unprocessed outer ring work of the bearing to each of the two main spindles provided in one processing device, and place a pair of inner raceway groove bits from the center of the outer ring work. Install them on one turret by offsetting them toward each other, and then operate the turret with NC control while operating the main spindle as follows. Double row outer ring raceway groove processing method of the bearing outer ring to perform double row outer ring raceway groove processing.

: Process of moving the inner raceway groove bite in front of the two spindles: Step of advancing the inner raceway groove bite into the work and correcting the diameter and position of the front raceway groove bit on the right inner raceway groove bite: Right side The process of advancing the raceway groove bit to the left to contact the inner surface of the workpiece to perform the raceway groove machining on the right side of the workpiece: The process of letting the inner raceway groove bit escape: The process of advancing the inner raceway groove bit in the work direction Process of moving to the position of the inner raceway groove and correcting the diameter and position of the inner raceway groove bit on the right inner raceway groove bite: Move the inner raceway groove bite to the left to process the inner raceway groove of the right workpiece. Process to be performed: Process to release the inner raceway groove tool to the right: Process to correct the diameter and position of the inner raceway groove bit of the left work with respect to the left inner raceway groove tool: Step to move the inner raceway groove tool to the right Machining the inner raceway groove of the work Process: Releasing the inner raceway groove tool to the left: Returning the left inner raceway tool bit to the front a little, and correcting the left inner raceway tool bit to the diameter and position of the front raceway groove of the left workpiece. Process to move the inner raceway groove bite to the right to process the front raceway groove on the left side work: Step to release the inner raceway groove bite to return it to the retracted state 5) Two spindles installed in one machining unit Chuck the unworked inner ring work of the bearing, and attach a pair of outer diameter bites to one tool post at the outer position of the work in the opposite direction from the outer machining groove, and then while operating the main spindle, the tool post Double-row inner ring raceway groove machining method for bearing inner ring, which is operated by NC control as follows to perform double-row inner ring raceway groove machining.

: Process of moving the outer diameter bite in front of each spindle: Advance the outer diameter bite to the work direction to the machining start point of the outer diameter raceway groove in front, and also the diameter of the outer diameter raceway groove of the right work with respect to the right outer diameter bite , Process of correcting position: Process of moving outer diameter bit to left and right outer diameter bit to combine front orbit groove of right work with composite feed orbit groove: Outer outer diameter track while letting outer diameter bit escape from work to right Move to the machining start point of the groove and correct the right outer diameter raceway groove diameter and position of the right outer diameter bite: Move the outer diameter bit to the left and move the outer diameter bite to the right outer diameter of the right workpiece Process of performing composite feed machining of radial raceway groove: Retracting the outer diameter tool to the right while retracting, moving the left outer diameter tool to the front of the left workpiece, moving the left outer diameter tool to the starting point of the outer diameter raceway groove: Left outer diameter tool to the front of the left workpiece Process of correcting the raceway groove diameter and position: Outer diameter bar Process of moving the tool to the right and performing a composite feed machining of the front outer diameter raceway groove of the left work with the left outer diameter bite: Advance while releasing the outer diameter bite and move it to the machining start point of the back outer diameter raceway groove to the left outer diameter bite Process to correct the diameter and position of the inner / outer diameter raceway groove of the left work: Process to move the outer diameter bite to the right to perform composite feed machining of the inner / outer diameter raceway groove of the left work with the left outer diameter bite: Outer diameter Process of releasing the bite to the left and returning it to the front 6) The unprocessed work of the outer ring of the bearing is on the right side of one of the two spindles provided in one machining device, and the inner ring of the bearing is on the other left spindle. When the unmachined work is chucked and the outer race groove bite of the work of the outer ring moves in the direction of the work, the inner work of the outer ring becomes the initial position offset to the inner side away from the inner peripheral surface of the work. The inner track groove bit is One tool at the initial position so that when it moves in the work direction, it becomes the initial position offset outward from the outer circumference of the work, and when each tool moves simultaneously in the work direction, each tool does not contact each work. It is placed on a table, and while rotating two spindles, the tool post is operated by NC control as follows, with the two tools attached to the tool post, and the inner diameter of the outer ring workpiece is raceway grooved and the outer diameter of the inner ring workpiece is A raceway groove machining method for outer and inner races of a bearing, which is characterized by performing raceway groove machining in parallel.

: Process of moving the cutting tool to the front of each spindle: Process of moving one inner raceway groove tool to the machining position of the work and correcting the raceway groove and position with respect to the inner raceway tool ： I do inner diameter raceway groove processing,
Process of empty machining the other outer raceway groove tool: Process of returning the inner raceway groove tool to the escaped state: Process of compensating the raceway groove dimension position of the left work on the other outer raceway groove tool: Outer raceway groove tool This is the process of machining the outer raceway groove of the inner ring work and emptying the other inner raceway groove bites: the step of returning the outer raceway groove tool to the relief state: the step of returning the tool to the state of retracting from the work.

Of course, the cutting tool to be attached to the tool rest may be provided in two groups in a comb shape, or may be provided in two groups in a turret type like an ordinary NC machine (Fig. 23). reference).

The number of cutting tools in the two groups is 1 or more in each group, and is usually 3
However, the number may be one or two.
Further, biaxial driving may be performed by one motor or may be independently driven by two motors.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

The embodiment shown in FIGS. 1 to 5 is an example in which an outer ring and an inner ring of a bearing are machined, and FIGS. 1 and 3 show a tool having the same outer ring chucked on two main shafts, and among the cutting tools arranged in a comb shape. This shows a machining method in which inner diameter raceway groove machining of the outer ring is performed alternately with inner diameter cutting tools of the same shape that are offset inward from each other between the centers of the spindles. With different inner diameter raceway groove cutting tools and outer surface chamfering tools, two workpieces are processed at the same time: inner diameter raceway groove processing and outer surface chamfering. Also, the seal groove processing is performed in the same manner as the inner diameter raceway groove processing.

Further, FIG. 2 shows that two spindles are chucked with workpieces of the same inner ring, and outer diameter raceway grooves of the same shape are arranged outside the machining ends on the outside of the spindles arranged in a comb tooth shape. It is explanatory drawing of the processing method which performs a process, performs a seal groove process with the sealing groove process bite of the same shape, and further performs inner chamfering with a chamfering bite. 4 and 5 are diagrams showing the processing steps of the inner ring and outer ring of the bearing.

FIG. 1 shows the attachment of the cutting tool group when machining the outer ring, and the two sets of cutting tool groups are each mounted on a one-block cutting tool group mounting base. Of these, the left-side work bite group mounting base is formed so that it can be finely adjusted. Further, FIG. 2 shows the attachment of the bite group when machining the inner ring. The bite group for the left work is attached to the two-block bite attachment base formed to be finely adjusted, and the bite group for the right work is It is mounted on a one-block tool group mounting base that is fixed to the turret.

In the figure, (1) is a chuck attached to the spindle (2), (3)
Turret, (4) Tool group mounting base for left side work (5), (6) Tool group mounting base for right side work (7),
(8) is a fine adjustment screw for the bite group mounting base (4),
(9) is a touch sensor, (10) is a bit for machining the raceway groove (11) used when machining the bearing outer ring (5a) as the left-side workpiece (5), and (12) is a machining bit for the seal groove (13) , (14) are chamfering bits for the same R surface (24), (1
5) is a right-side work (7) that is formed in the opposite direction to the above-mentioned bite group
Of the bearing outer ring (7a) as a tool for machining the raceway groove (11), (16) for the same seal groove (13), and (17) for the chamfering of the R surface (24) .

Further, (18) is a bit for machining the raceway groove (11) used when machining the bearing inner ring (5b) as the left work (5),
(19) is a bit for processing the same seal groove (13), (20) is a bit for chamfering the same, (21) is a tool opposite to the above-mentioned group of bits and is used for machining the inner ring (7b) of the bearing as the right work (7) The raceway groove (11) machining bit to be used, (22) is the same seal groove (13) machining bite, and (23) is the same chamfering bite.

Further, (4a) is a bite group base (4) for the left-side work (5) which is made into a two-block structure and is provided with a fine adjustment screw (8) for a raceway groove (11) machining bite (18) mounting base, (4b)
Is a base for mounting the cutting tool (19) and the chamfering tool (20) for processing the seal groove (13).

When machining this bearing inner ring (5b), (7b), the raceway groove (11) machining bites (18) and (21) and the seal groove (13) machining bite (19) and (22) are alternatives. Used for, and also for the seal groove (13) machining bite (19) and chamfering bite (2
3) The cutting tool (22) for chamfering the seal groove (13) and the chamfering tool (20) can be used at the same time for processing.
In these cases, the distance between the cutting tools is adjusted appropriately.

FIG. 3 shows the order of machining the outer ring of the two bearings. In the figure, L-1 to L-8 are the machining order of the left workpiece, R-
1 to R-8 are the processing order of the right workpiece. In addition, the correction of the bite (15) for machining the raceway groove (11) of the right work (7) is R
In the case of -2, the correction of the bite (10) for machining the raceway groove (11) of the left work (5) is performed at L-5, but in this embodiment, it is performed only at L-5.

Further, (m) in the figure is an offset amount with respect to the main axis (s).

The correction in the above process is performed by moving the tool rest and bringing the touch sensor (9) into contact with the work to measure the error in the size and position of the raceway groove or the like, and is automatically inserted before the cutting tool is machined. The size / position error here is due to the setting error at the time of exchanging the tool and the tendency change due to the use of the tool. The latter is obtained by sampling for each suitable work processing amount and used for determining the correction amount.

Next, FIGS. 6 and 7 show examples of inner diameter machining of the bearing work (30) before the outer ring and the inner ring are separated. In this example, the inner diameter cutting tools (T01) and (T11) are those having a large nose and high rigidity and capable of high feed. The cutting tools (T01) and (T11) are offset from the center of the inner diameter of the work piece on the opposite sides, and when either of the cutting tools (T01) and (T11) is brought closer to the inner diameter of the work piece (30), the correction is made at the same time. , And then point cutting begins. The process is shown in detail in FIGS.

In the figure, (a) is the process of moving the inner diameter bite (T01), (T11) to the front of the R, L spindle (2), (b) is the bite (T0
1), a process of bringing (T11) closer to the work and making a correction in the cutting tool (T01), (C) is a process of feeding in the Z-axis direction with the R-spindle side cutting tool (T01) and empty-processing of the L spindle. ,
(D) is a step of releasing the cutting tool (T01) simultaneously in the X and Z directions. R is right, L is left, Z is front-back, X
Indicates the left-right direction. The same applies hereinafter. (E) is the process of inserting the correction for the DL dimension of the bite (T11),
(F) is a step of feeding the L-spindle side with a cutting tool (T11) in the Z direction, and (g) is a step of returning the cutting tool (T11) to the R-1 and L-1 states by escaping in the X and Z directions.

By repeating the above process, the inner diameter of the bearing work before outer ring / inner ring separation is machined.

In the embodiment shown in FIG. 8, two main shafts (2) are chucked with the same work (30) of the bearing before separation of the inner ring and the outer ring, and different inner diameter machining bit (32) and outer surface chamfering bite (33). ) Is an example in which two workpieces are simultaneously processed for inner diameter processing and outer chamfering. One workpiece (30) is machined with the inner diameter machining tool (32) and the other workpiece (3
The chamfering of the outer surface of (0) is processed with a chamfering cutting tool (33). Chamfer the inner diameter with the chamfering tool (33b). The state is shown by the imaginary line in FIG. All of them are corrected before they are processed.

Workpiece of bearing inner ring shown in Fig. 9,10,11 (35)
It is an example showing a process of machining the outer diameter raceway groove of. In this embodiment, raceway grooves are machined by the device shown in FIG. 11, and the outer raceway tool bits (T09) and (T19) of the general cutting are opposite to the outer machined end of the work of the inner ring in the outer direction. This is an example in which the workpieces are arranged at positions separated by the required distance, and are processed alternately after the corrections are made. The processing includes steps (a) to (h). The outer machining sequence of the work of the inner ring is shown in FIG.

(A): Bring the outer raceway groove bits (T09), (T19) in front of the R and L spindles (2).

(B): Bring the outer race groove bite (T09) and (T19) to a position separated by the required distance from the outer ring of the work outline, and correct the outer race groove bite (T09).

(C): The R spindle side is machined with an outer race groove tool (T09).
The L spindle side is blank.

(D): Remove the outer race groove bite (T09) to return to the state of R-2.

(E): Insert outer track groove bite (T19).

(F): The L spindle side is machined with the outer raceway groove tool (T19).

(G): Release the outer raceway groove bite (T19) and return to the L-5 state.

(H): Separate the outer raceway groove bite (T09) and (T19) and return to the R-1 and L-1 state.

The embodiment shown in FIGS. 12, 13 and 14 is used in the embodiment of double row outer ring raceway groove machining of the work (37) of the outer ring of the bearing. The cutting tool is a general-purpose cutting tool for machining the inner raceway groove, which is offset from the center of the workpiece in opposite directions (opposite directions). The steps of this processing method are shown in detail in FIGS.

Process (i): Move the inner raceway groove bite (T07) and (T17) to the front of the R and L spindles.

(J): Input the bytes (T07) and (T17) into the work. ・ Enter the correction in the byte (T07).

(K): On the R spindle side, use a bite (T07) to machine the front raceway groove. The L spindle side is blanked.

(L): Escape the bite (T07).

(M): Move the cutting tool (T07) to the inner raceway groove position and correct the cutting tool (T07).

(N): For the R spindle side, use a bite (T07) to machine the deep track groove.

(O): Escape the byte (T07).

(P): Insert the bite (T17) correction.

(Q): Machining the inner track with a bite (T17).

(R): Escape the byte (T17).

(S): Move the bite (T17) to the front raceway groove position, and make a correction.

(T): The tool is moved to the right, and the front track groove is processed with the tool (T17).

(U): Escape the byte (T17).

(V): Remove the bite and return to the state of (i).

The embodiment shown in FIGS. 15, 16 and 17 is an example of a method for performing point machining of a double-row inner ring raceway groove on a work (39) of an inner ring of a bearing. In this example, the outside diameter cutting tools (T08) and (T18) are placed away from the outer machining grooves of the inner ring work in opposite directions, and one work (39) is double-row machined before the other work. (39) is an example of double-row processing.

 The process is a repetition of the following α to λ.

α: Moves the outer diameter bite in front of the R and L spindles.

β: Move the outer diameter bite (T08) on the right side to the machining start point of the outer diameter raceway groove on the front side, and at the same time, correct the outer diameter bite (T08).

On the γ: R spindle side, the outer race bit (T08) is used to perform composite feed processing of the front raceway groove (40).

δ: The outer diameter bit is moved to the machining start point of the outer diameter raceway groove. Insert the correction for the outside diameter tool (T08).

ε: R The outer race bit (T08) on the spindle side is used to composite feed the inner raceway groove (41).

ζ: Release the bite and move the outer diameter bite (T18) to the machining start point of the front raceway groove.

θ: L On the spindle side, the outer race bit (T18) is used to composite feed machining of the front raceway groove (42). The R spindle side is blank processed.

ι: Move the outer diameter bite (T18) to the processing point of the outer diameter raceway groove.

On the κ: L spindle side, an outer diameter bite (T18) is used to perform composite feed machining of the inner raceway groove (43). (Even if the same size is processed, the slight difference between DL1 and DL2 is corrected with a bite. Dimension LL2 is also corrected.) Λ: The bite is released and returned to the state of R-1 and L-1.

The embodiment shown in FIG. 18 is an example in which the double-row raceway groove and outer diameter machining of the outer ring of the bearing are divided into two steps, and each of the divided steps is made continuous on each main shaft.

In the figure, (50) is a work of the outer ring of the bearing, (51) is an inner diameter machining tool, (52) is an outer diameter machining tool, and (52b) is an inner diameter groove machining tool.

In this embodiment, the inner diameter and the outer diameter of the non-chuck part of the work (50) of the outer ring are machined on one spindle (2), and then the work (50) is chucked on the other spindle (2) for machining. This is an example in which machining of the inner diameter and the outer diameter of the work (50) in the remaining chucking portion which has not been performed is continuously performed with two groups of cutting tools.

In the embodiment shown in FIGS. 19 to 21, the outer ring work (60) of the bearing is chucked on one right side of the two main shafts (2), and the inner ring work (61) of the bearing is chucked on the other left side shaft, This is an example in which orbit grooves of different works are alternately processed.

FIG. 21 shows the apparatus of this example. Outer ring work (60)
Simultaneously with the machining of the outer diameter raceway groove, the inner chamfering of the inner ring work (61) is performed. Also, the seal groove of the outer ring work and the seal groove of the inner ring are processed.

In this actual case, the tool rest (3) is controlled while rotating the spindle (2), and the steps from to are performed. The process is shown in FIGS.

: Process of moving the raceway bite (T06), (T16) to the front of each spindle: Advance the raceway bite to the machining device of the work (60), (61), and insert the correction of the right-sided raceway bite (T06). Process: Send the raceway bite to the left and process the inner raceway groove (62) on the outer ring work (60) with the right-sided raceway bite (T06): Escape the raceway bite and return it to the state of: Process of inserting the correction into the borrowed track groove tool (T16) Send the track groove tool to the right and send it to the left track groove tool (T1).
Process of machining outer diameter raceway groove (63) on the work (61) on the left inner ring in 6): Step of escaping raceway groove bite and returning to state: Step of returning raceway bite away from work and returning to state In the embodiment shown in FIG. 22, the work is the work of the inner ring of the bearing (70), and the tool post (3) is attached to the other by the two outer diameter raceway groove cutting tools (71) arranged inside the main shaft (2). This is an example of moving and altering processing similarly to the embodiment.

In the apparatus shown in FIG. 23, the cutting tool group (80) of the present invention is of a turret type, and the processing steps are the same as those of the comb-shaped processing apparatus. It should be noted that as long as a replacement space can be provided by the turret for each comb tooth-shaped tool group, there can be as many as three surfaces and four to eight surfaces.

The two axes in the above embodiment are examples of being driven by one motor (not shown). Further, in the above embodiment, the work and the bite group and the left and right directions of movement are established even if they are reversed, and this is also included in the present invention.

(Effects of the Invention) As described above, according to the present invention, two workpieces are integrated into one device by two spindles, one NC-controlled tool rest, and two groups of cutting tools attached to the tool rest. Since one machine performs alternating or simultaneous parallel machining processing, the machining processing amount of the work per machine increases, and the required number of machines for the same machining production amount is It can be reduced to about 2/3. Therefore, both production cost and occupied space can be reduced,
Moreover, since the processing labor cost is small, the number of devices can be reduced, which is an excellent effect.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing an apparatus of an embodiment of an outer ring inner diameter processing of a bearing outer ring, FIG. 2 is an explanatory view showing an apparatus of an embodiment of an outer ring inner diameter processing of a bearing inner ring, and FIG. 3 is an outer ring inner diameter processing. FIG. 4 is an explanatory diagram showing the steps, FIG. 4 is an explanatory diagram showing the latter half of the outer ring processing of the bearing to finishing, and FIG. 5 is an explanatory diagram showing the order of the inner ring processing of the bearing. FIGS. 6 and 7 are explanatory views showing an embodiment of inner diameter machining of the bearing work before separation of the outer ring and the inner ring, and FIG. 8 is an embodiment of simultaneous machining of the bearing work before separation of the outer ring and the inner ring by different cutting tools. And FIGS. 9 and 10 show an embodiment showing the process of machining the inner diameter raceway groove of the work of the inner ring. FIG. 11 is a plan view showing the device of the same example. 12, 13 and 14 are process drawings showing an example of double-row outer ring raceway groove machining of the outer ring work, and FIGS. 15, 16 and 17 are explanatory views showing double-row inner ring raceway groove machining of the inner ring, FIG. Is an explanatory view of an embodiment in which the double row inner diameter and outer diameter of the outer ring of the bearing are divided into two steps, and FIGS. 19 and 20 show an example of performing the raceway groove processing of the inner ring and the outer ring of the bearing in parallel. FIG. 21 is a plan view showing the device, FIG. 22 is an explanatory view showing the device of the embodiment, and FIG. 23 is an explanatory view showing a device in which a cutting tool is attached in a turret form. (1): Chuck, (2): Spindle (3): Turret, (4): Touch sensor (5), (30), (35), (37), (39), (50),
(60), (61), (70): Work (10), (12), (14) to (23): Tool Bit (11): Track Groove, (13): Seal Groove (32): Inner Diameter Processing Tool , (33): Chamfering tool bit (33b): Chamfering tool bit (51): Inner diameter tool bit, (52): Outer diameter tool bit (52b): Inner diameter groove tool bit (71): Outer diameter raceway groove tool bit ( (T01), (T11): Inner diameter bite (T06), (T16): Raceway groove bite (T07), (T17): Inner raceway groove bite (T08), (T18): Outer diameter bite (T09), (T19) : External track groove tool

Claims (6)

(57) [Claims] 1. A non-machined outer ring work of a bearing is chucked on each of two main spindles provided in one machining apparatus, and a pair of inner raceway groove bits are offset from each other in a direction approaching each other from the center of the main spindle. A raceway groove machining method for a bearing outer ring that is mounted on two turrets, and then operates the spindle while operating the turrets with NC control as shown below to perform raceway groove machining. : Process of moving the inner raceway groove bite in front of the two main spindles so that the center of the bite is inside the center of the two main spindles: Insert the inner raceway groove bite into the work and insert it into the right inner raceway groove bite On the other hand, the process of correcting the diameter and position of the raceway groove to be processed: Moving the inner raceway tool bit on the right side to the left with offset, and making the inner raceway tool bit on the right side contact the work piece to perform inner raceway groove machining Process: Returning the inner raceway groove tool to the offset position: Next, correcting the diameter and position of the raceway groove to be machined for the left inner raceway groove tool: The same as the left inner raceway tool bit offset to the right Machining process of moving and contacting the work with the inner track groove of the left work: Returning both inner track groove bites to the offset position and then retracting to separate from the work 2. A non-machined inner ring work of a bearing is chucked on each of two main spindles provided in one machining apparatus, and a pair of outer raceway groove bits are provided from the machined end of the outer peripheral machined surface of each work. A raceway groove machining method for the inner ring of the bearing, which is installed on the tool post at the outer side in the away direction, and then operates the tool post under NC control while operating the spindle to perform the outer diameter raceway groove machining of the inner ring work. : Process of moving the outer raceway bite in front of the two main spindles so that the two outer raceway bites are located at the outer positions in the direction away from each other on the outer peripheral machining surface of the workpiece. Move to the outside of the work and correct the diameter and position of the raceway groove end of the inner ring of the right work to be processed with respect to the right outer raceway bite: Move the right outer raceway bite to the left, Machining process of making raceway groove machining on the right workpiece by contacting the work piece: Process of escaping the outer raceway tool bit to the right to return to the original position before machining before compensation on the outside of the work piece: On the right outer raceway tool bit On the other hand, the process of correcting the diameter and position of the raceway groove of the left workpiece to be machined: The machining process for machining the raceway groove of the left workpiece by moving the left outer raceway tool bit to the right: The outer raceway tool bit to the left Let go Degree: step of returning to the state of the outer raceway groove bytes retracting 3. A workpiece before being separated into an outer ring and an inner ring of a bearing is chucked on each of two spindles provided in a single machining apparatus, and a pair of inner diameter cutting tools are offset from each other in a direction approaching each other from the center of the spindle. One inner diameter machining method for non-separated workpieces of outer and inner rings of bearings, which is mounted on two turrets, and then operates the spindle while operating the turrets with NC control as described below. : Process of bringing the inner diameter bite in front of the spindle: Step of advancing the inner diameter bite in the work direction, and also inserting the correction of the radius of the inner ring of the right work into the right inner diameter bite: Advance the inner diameter bite in the work direction to move the inner ring of the right work Process to perform inner diameter machining: Process to retreat while releasing inner diameter tool: Process to correct radius of inner ring of left work on left inner diameter tool: Process to inner diameter work on left work while advancing inner diameter tool to work: Inner diameter tool Process of retreating while escaping 4. A non-machined outer ring work of a bearing is chucked on each of two main shafts provided in one machining device, and a pair of inner raceway groove bits are offset in a direction in which they approach each other from the center of the outer ring work. Then attach it to one turret,
Next, while operating the spindle, the turret is controlled by NC below.
A double row outer ring raceway groove method for bearing outer rings that operates like the above to perform double row outer ring raceway groove machining. : Process of moving the inner raceway groove bite in front of the two spindles: Step of advancing the inner raceway groove bite into the work and correcting the diameter and position of the front raceway groove bit on the right inner raceway groove bite: Right side The process of advancing the raceway groove bit to the left to contact the inner surface of the workpiece to perform the raceway groove machining on the right side of the workpiece: The process of letting the inner raceway groove bit escape: The process of advancing the inner raceway groove bit in the work direction Process of moving to the position of the inner raceway groove and correcting the diameter and position of the inner raceway groove bit on the right inner raceway groove bite: Move the inner raceway groove bite to the left to process the inner raceway groove of the right workpiece. Process to perform: Process to release inner raceway groove tool to the right direction: Process to correct diameter and position of inner raceway groove bite on left work to left inner raceway groove tool: Step to move inner raceway groove tool to the right side Machining of deep track groove of work Step: Releasing the inner raceway groove bit to the left: Returning the left inner raceway groove bit slightly to the front, and correcting the diameter and position of the left-side workpiece front raceway groove with respect to the left inner raceway groove bite : Process to move the inner raceway bit to the right to process the front raceway groove on the left side work: Step to release the inner raceway groove bit and return it to the retracted state 5. A non-machined inner ring work of a bearing is chucked on each of two main shafts provided in one machining apparatus, and a pair of outer diameter cutting tools are positioned at outer positions in opposite directions from an outer machining groove of the work. A single-row inner ring raceway groove machining method for a bearing inner ring in which the tool post is attached to one of the tool turrets and then the tool post is operated by NC control while operating the main spindle as described below to perform double-row inner ring raceway groove machining. : Process of moving the outer diameter bite in front of each spindle: Advance the outer diameter bite to the work direction to the machining start point of the outer diameter raceway groove in front, and also the diameter of the outer diameter raceway groove of the right work with respect to the right outer diameter bite , Process of correcting position: Process of moving outer diameter bit to left and right outer diameter bit to combine front orbit groove of right work with composite feed orbit groove: Outer outer diameter track while letting outer diameter bit escape from work to right Move to the machining start point of the groove and correct the right outer diameter raceway groove diameter and position of the right outer diameter bite: Move the outer diameter bit to the left and move the outer diameter bite to the right outer diameter of the right workpiece Process of performing composite feed machining of radial raceway groove: Retracting the outer diameter tool to the right while retracting, moving the left outer diameter tool to the front of the left workpiece, moving the left outer diameter tool to the starting point of the outer diameter raceway groove: Left outer diameter tool to the front of the left workpiece Process of correcting the raceway groove diameter and position: Outer diameter bar Process of moving the tool to the right and performing a composite feed machining of the front outer diameter raceway groove of the left work with the left outer diameter bite: Advance while releasing the outer diameter bite and move it to the machining start point of the back outer diameter raceway groove to the left outer diameter bite Process to correct the diameter and position of the inner / outer diameter raceway groove of the left work: Process to move the outer diameter bite to the right to perform composite feed machining of the inner / outer diameter raceway groove of the left work with the left outer diameter bite: Outer diameter The process of releasing the bite to the left and returning it to the front 6. A workpiece of an outer ring is obtained by chucking an unmachined workpiece of an outer ring of a bearing on the right side of one of two main spindles provided in one machining device and a workpiece of an inner ring of a bearing on the other left spindle. When the outer raceway groove bit of is moved to the work direction, the inner raceway tool bit of the inner work moved in the work direction so that the inner race of the outer ring becomes the initial position offset inward from the inner peripheral surface. Sometimes it is placed on one turret at an initial position that is offset outward from the outer circumference of the work and when each tool moves in the work direction at the same time so that each tool does not contact the work. While rotating the two main spindles, the tool post is operated by NC control with the two tools attached to the tool post as shown in the following to to perform inner diameter raceway groove machining of the outer ring work and outer diameter track of the inner ring work. Outer and inner rings of the raceway groove processing method of the bearing which is characterized in that the grooving in parallel. : Process of moving the cutting tool to the front of each spindle: Process of moving one inner raceway groove tool to the machining position of the work and correcting the raceway groove and position with respect to the inner raceway tool ： I do inner diameter raceway groove processing,
Process of empty machining the other outer raceway groove tool: Process of returning the inner raceway groove tool to the escaped state: Process of compensating the raceway groove dimension position of the left work on the other outer raceway groove tool: Outer raceway groove tool Process of machining outer raceway groove of inner ring work and empty machining of other inner raceway groove bite: Process of returning outer raceway groove bite to escape state: Process of retracting bite back to work state