JPH05272547A - Manufacture of constant-velocity joint and coupling member thereof - Google Patents

Abstract

PURPOSE:To provide a constant-velocity joint capable of reducing the machining cost. CONSTITUTION:A constant-velocity joint is constituted of the first and second sliding peripheries 14, 23 bringing every other inner peripheries formed at six places in the peripheral direction between the first guide grooves 12 of an outer coupling member 1 and guiding the outer peripheries 41 of cages 4 and outer peripheries formed at six places in the peripheral direction between the second guide grooves 21 of an inner coupling member 2 into slide contact with the cages 4 and the first and second unsliding peripheries 16, 25 located at the back of the first and second sliding peripheries 14, 23 and kept in no contact with the cages 4 partially or wholly. No surface grinding process is required to be applied to the first and second unsliding peripheries 16, 25, the life of a grinding wheel used for the surface grinding process of the first and second sliding peripheries 14, 23 can be extended, the processing time can be shortened, and the machining cost can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a constant velocity joint used for a driving force transmitting shaft portion of an automobile and capable of permitting angular displacement of both the driving shaft and the driven shaft while maintaining constant velocity. The present invention relates to a method for manufacturing a joint member.

[0002]

2. Description of the Related Art As a conventional constant velocity joint, those shown in FIGS. 9 and 10 are known. This constant velocity joint has a cup-like shape with one end open and has six first guide grooves 12a extending in the axial direction on the inner circumference thereof, and a shaft portion 10a formed on the bottom side thereof is connected to a driven shaft (not shown). And an outer joint member 1a, which is connected to a drive shaft (not shown), is coaxially disposed inside the outer joint member 1a, and has six second guide grooves 21a extending axially on the outer periphery thereof. Inner joint member 2a
And six balls 3a rotatably arranged in the first and second guide grooves 12a and 21a for transmitting torque, and interposed between the inner and outer joint members 2a and 1a holding the balls 3a. And the cage 4a.

In this constant velocity joint, when the drive shaft and the driven shaft form a joint angle, the inner and outer joint members 2a, 1a move relative to the cage 4a interposed therebetween. Has been done. Therefore, the six inner peripheral surfaces 14a formed between the first guide grooves 12a of the outer joint member 1a and the second guide grooves 21a of the inner joint member 2a are formed.
The six outer peripheral surfaces 23a formed in between are formed into the same spherical surface, respectively, and a surface grinding treatment (including a final polishing treatment. The same applies hereinafter) so that the cage 4a can be smoothly slid.
Has been applied.

[0004]

By the way, the inner peripheral surface 14 of the outer joint member 1a in the above-mentioned conventional constant velocity joint.
Since the outer peripheral surface 23a of the inner joint member 2a and the outer peripheral surface 23a of the inner joint member 2a are in sliding contact with the cage 4a at each of six places, surface grinding is applied to all of these surfaces. Therefore, the life of the grindstone used for the treatment is short, and the treatment time is long, resulting in high cost.

The present invention has been devised in view of the above problems, and an object of the present invention is to provide a constant velocity joint and a method for manufacturing the joint member thereof, which can reduce the processing cost. ..

[0006]

In order to solve the above problems, a constant velocity joint according to a first aspect of the invention has a plurality of first guide grooves axially extending in the inner periphery of a tubular shape having one end open. An outer joint member, an inner joint member coaxially arranged inside the outer joint member, and having the same number of second guide grooves as the first guide grooves axially extending on the outer periphery of the outer joint member; And a plurality of balls rotatably arranged between the second guide grooves and transmitting torque, and a cage which holds the balls and is interposed between the inner and outer joint members, and the outer joint. A plurality of members are formed circumferentially between the first guide grooves of the member, and a plurality of members are formed circumferentially between the inner peripheral surface that guides the outer peripheral surface of the cage and the second guide grooves of the inner joint member. At least one part or the whole of the outer peripheral surface that guides the inner peripheral surface of the cage is in the circumferential direction. Every other one is composed of a sliding contact peripheral surface that is in sliding contact with the cage and a non-sliding contact peripheral surface that is partially or entirely displaced from the sliding contact peripheral surface in the radial direction and is not in sliding contact with the cage. The configuration is adopted.

A method of manufacturing an outer joint member according to a second aspect of the present invention comprises an outer joint member having a tubular shape having one end opened and having a plurality of first guide grooves extending in the axial direction on the inner periphery thereof. Between the first and second guide grooves, the inner joint member is provided coaxially inside the outer joint member, and has the same number of second guide grooves as the first guide grooves extending in the axial direction on the outer periphery thereof. Method for manufacturing the outer joint member in a constant velocity joint including a plurality of balls rollably arranged to transmit torque, and a cage that holds the balls and is interposed between the inner and outer joint members. The plurality of inner peripheral surfaces formed in the circumferential direction between the first guide grooves have an inner peripheral diameter that is slightly smaller than the outer peripheral diameter of the cage in every other circumferential direction. Surface and a second inner peripheral surface having an inner peripheral diameter larger than the outer peripheral diameter of the cage in part or in whole A roughing step of forming, and the first inner peripheral surface adopts a construction that consists of a surface grinding step of surface grinding the inner circumference can be said cage and slide.

The method for manufacturing an inner joint member according to a third aspect of the present invention includes an outer joint member having a tubular shape having one end opened and having a plurality of first guide grooves extending in the axial direction on the inner periphery thereof. Between the first and second guide grooves, the inner joint member is provided coaxially inside the outer joint member, and has the same number of second guide grooves as the first guide grooves extending in the axial direction on the outer periphery thereof. Method for manufacturing the inner joint member in a constant velocity joint including a plurality of balls rollably arranged to transmit torque and a cage that holds the balls and is interposed between the inner and outer joint members. A plurality of outer circumferential surfaces formed in the circumferential direction between the respective second guide grooves have a first outer circumferential surface having an outer circumferential diameter slightly larger than the inner circumferential diameter of the cage at every other circumferential direction. ,
A roughing step of forming a second outer peripheral surface having an outer peripheral diameter smaller than the inner peripheral diameter of the cage on a part or the entire surface, and a surface for surface grinding the first outer peripheral surface to an outer peripheral diameter slidable with the cage. It is composed of a grinding process.

[0009]

In the constant velocity joint of the first aspect of the invention, at least one of the inner peripheral surface of the outer joint member and the outer peripheral surface of the inner joint member, or at least a part of the entire surface of the outer joint member is a cage in every other circumferential direction. Since it has a non-sliding contact peripheral surface that does not slidably contact with, it is not necessary to perform grinding processing on that surface. Therefore, the life of the grindstone used for the processing can be extended and the processing time can be shortened, so that the processing cost can be reduced.

Further, in the manufacturing methods of the second and third inventions, a second method is one in which the inner peripheral surface of the outer joint member and the outer peripheral surface of the inner joint member do not require grinding in the surface grinding step. The inner peripheral surface and the second outer peripheral surface are previously formed in a roughing process, and in the surface grinding process, only the first inner peripheral surface and the first outer peripheral surface, or the entire first inner peripheral surface and the first outer peripheral surface, and the second The inner peripheral surface and a part of the second outer peripheral surface are ground. As a result, the life of the grindstone used for grinding can be extended, and the time required for the surface grinding step can be shortened, and thus the processing cost can be reduced.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the first to third inventions will be described below with reference to the drawings. (Embodiment 1) This embodiment relates to the first invention, and FIG. 1 shows a sectional view along the axial direction of a constant velocity joint according to this embodiment, and FIG. 2 shows II- of FIG. A sectional view corresponding to line II is shown.

The constant velocity joint of this embodiment has an outer joint member 1 having a first guide groove 12, an inner joint member 2 having a second guide groove 21, and first and second guide grooves 12, 21. The main elements are a ball 3 arranged between them and a cage 4 which holds the ball 3 and is interposed between the inner and outer joint members 2 and 1. The outer joint member 1 is a cup-shaped member having one end opened, and a shaft portion 10 connected and fixed to one end of a driven shaft (not shown) is integrally formed on the bottom side thereof. On the inner periphery of the outer joint member 1, six first guide grooves 12 extending in an arcuate shape in the axial direction are formed at equal angular intervals. Six inner peripheral surfaces formed along the circumferential direction between the respective first guide grooves 12 are formed into a concave spherical surface with a certain curvature and are slidably contacted with an outer peripheral surface 41 of the cage 4 described later. First
Sliding contact peripheral surface 14 and three first non-sliding contact peripheral surfaces that are located radially outward of the first sliding contact peripheral surface 14 and do not make sliding contact with the outer peripheral surface 41 of the cage 4 in part or in whole. 16 and the first sliding contact peripheral surface 14 and the first non-sliding contact peripheral surface 16 are arranged at every other intervals in the circumferential direction. Among the inner peripheral surfaces, the first sliding contact peripheral surface 14 is subjected to the surface grinding treatment, but the entire surface or part of the first non-sliding contact peripheral surface 16 is not subjected to the surface grinding treatment.

The inner joint member 2 has a short cylindrical shape and is coaxially arranged inside the outer joint member 1.
One end of a drive shaft (not shown) is connected and fixed to the inner peripheral portion of the inner joint member 2 by spline coupling. On the outer periphery of the inner joint member 2, six second guide grooves 21 extending in an arc shape in the axial direction are formed at equal angular intervals. Six outer peripheral surfaces formed along the circumferential direction between the respective second guide grooves 21 are formed into a convex spherical surface with a certain curvature and are slidably in contact with the inner peripheral surface 43 of the cage 4. The sliding contact peripheral surface 23 and the second
There are three second positions that are displaced radially inward from the sliding contact peripheral surface 23 and do not partially or entirely contact the inner peripheral surface 43 of the cage 4.
The non-sliding contact peripheral surface 25 and the second sliding contact peripheral surface 23 and the second
Every other non-sliding contact peripheral surface 25 is arranged in the circumferential direction.
Of the outer peripheral surface, the second sliding contact peripheral surface 23 is subjected to the surface grinding treatment, but the entire surface or part of the second non-sliding contact peripheral surface 25 is not subjected to the surface grinding treatment.

The ball 3 is made of steel in a spherical shape, and has corresponding first and second guide grooves 12, 2 respectively.
One is provided between each one. Cage 4
An outer peripheral surface 41 having a convex spherical shape that matches the first sliding contact peripheral surface 14 of the outer joint member 1, and a second sliding contact peripheral surface 23 of the inner joint member 2.
It has a cylindrical shape having a concave spherical inner peripheral surface 43 that coincides with. Six ball holding windows 45 are formed in the cage 4 at equal angular intervals along the circumferential direction. The cage 4 holds each ball 3 by means of a ball holding window 45, and an outer peripheral surface 41 thereof is in sliding contact with the first sliding contact peripheral surface 14,
In addition, the inner peripheral surface 43 is interposed between the inner and outer joint members 2, 1 in a state of being in sliding contact with the second sliding contact peripheral surface 23.

In the constant velocity joint of this embodiment constructed as described above, when the drive shaft rotates, its rotational torque is transmitted from the inner joint member 2 to the outer joint member 1 via the balls 3 and is driven. The shaft rotates at the same speed as the drive shaft. Then, when the joint angle between the driven shaft and the drive shaft changes, the ball 3 rolls while being guided by the first and second guide grooves 12 and 21, and also the first sliding contact peripheral surface of the outer joint member 1. 14 and the outer peripheral surface 41 of the cage 4 slide, and the second sliding contact peripheral surface 23 of the inner joint member 2 and the inner peripheral surface 43 of the cage 4 slide to maintain constant velocity. Meanwhile, angular displacement of both axes is allowed.

As described above, according to the constant velocity joint of this embodiment, the inner peripheral surface of the outer joint member 1 is in sliding contact with the outer peripheral surface 41 of the cage 4 every other part in the circumferential direction. A second non-sliding surface which has a first non-sliding contact peripheral surface 16 and in which the outer peripheral surface of the inner joint member 2 is not in sliding contact with the inner peripheral surface 43 of the cage 4 every other part in the circumferential direction. Since the contact surface 25 is provided, the first and second non-sliding contact surfaces 16, 25 do not need to be ground or polished, or the amount thereof is reduced. As a result, the life of the grindstone used for the surface grinding process can be extended and the processing time can be shortened, so that the processing cost can be reduced.

In this embodiment, the non-sliding contact peripheral surface which does not slide contact with the cage 4 is formed on both the inner peripheral surface of the outer joint member 1 and the outer peripheral surface of the inner joint member 2. Even if the non-sliding contact peripheral surface is formed on only one of the above, the processing cost can be reduced. Further, although the present embodiment has been described by taking the bell type constant velocity joint (BJ) as an example,
In addition, the first invention can be applied to a double offset type (DOJ) or cross groove type (VL) constant velocity joint. (Embodiment 2) This embodiment relates to the second aspect of the present invention, in which the outer joint member in the constant velocity joint of Embodiment 1 is formed by the backward extrusion method (forging). FIG. 3 shows a cross-sectional view of the molding apparatus used in this example before and after molding, FIG. 4 shows a cross-sectional view showing the outer peripheral surface shape of the punch, and FIG. 5 shows a cross-sectional view showing a state in which the surface of the molded product is ground. Indicates. In addition, the same code | symbol is used for the member common to the said Example 1 here.

The molding apparatus shown in FIG. 3 is used in the roughing process in the manufacturing method of this embodiment. This molding apparatus is provided with a pressure receiving plate 6 having a knockout 61 arranged in the center.
2, a die 64 and a die insert 65 that are installed on the pressure receiving plate 62 to form the outer shape of the outer joint member 1, and a punch 7 that is arranged to face the knockout 61 and forms the inner peripheral shape of the outer joint member 1. , A driving unit 66 for driving the punch 7. As shown in FIG. 4, the tip portion of the punch 7 has a groove 6 corresponding to the first guide groove 12 of the outer joint member 1.
The ridge portion 72 of the ridge and the first inner peripheral surface 15 having an inner peripheral diameter slightly smaller than the outer peripheral diameter of the cage 4 (later the first sliding contact peripheral surface 14
And a second inner peripheral surface 17 (which later becomes the first non-sliding contact peripheral surface 16) having an inner peripheral diameter equal to or larger than the outer peripheral diameter of the cage 4. ) Is formed on the molded product. In order to carry out the roughing process using this molding apparatus, the raw material A formed in a predetermined shape is put into the cavity of the die 64, and the driving unit 66 is driven to cause the punch 7 to collide with the raw material A. As a result, a molded product B having an inner peripheral shape corresponding to the shape of the tip of the punch 7 is formed. That is, on its inner circumference,
Six first guide grooves 12 and six inner peripheral surfaces formed along the circumferential direction between the first guide grooves 12 are formed, and the inner peripheral surfaces are slightly smaller than the outer peripheral diameter of the cage 4. The first inner peripheral surface 15 having a small inner peripheral diameter and the second inner peripheral surface 17 having an inner peripheral diameter larger than the outer peripheral diameter of the cage 4 on a part or the entire surface are formed in every other circumferential direction.

Next, a surface grinding step of grinding the inner peripheral surface of the molded product B obtained in the roughing step is carried out. In this step, as shown in FIG. 5, a tool (grinding stone) T is used to grind only the first inner peripheral surface 15 or a part of the first inner peripheral surface 15 and the second inner peripheral surface 17, and (1) The inner peripheral surface 15 has an inner peripheral diameter that is slidable with respect to the cage 4. That is, the second inner peripheral surface 17
Since a part or the whole surface is formed with an inner diameter larger than the outer diameter of the cage 4, surface grinding is not necessary or the amount of grinding is reduced. Note that the first guide groove 12 is also subjected to surface grinding treatment if necessary.

As described above, according to the manufacturing method of this embodiment, the second inner peripheral surface 17 of the inner peripheral surface of the outer joint member 1 which does not require grinding in the surface grinding step is subjected to the roughing step. Since it is formed in advance and only the first inner peripheral surface 15 or a part of the first inner peripheral surface 15 and the second inner peripheral surface 17 is ground in the surface grinding step, the life of the grindstone used for grinding is about Double it,
Moreover, the time required for the surface grinding step can be shortened. Thereby, the processing cost can be reduced.

In this embodiment, the roughing process is performed by forging, but it is also possible to perform the roughing process by cutting or the like. (Embodiment 3) This embodiment relates to the third aspect of the present invention and is a manufacturing method for forming the inner joint member in the constant velocity joint of Embodiment 1 by a block forging method (forging). FIG. 6 is a cross-sectional view of the molding apparatus used in this example before and after molding, FIG. 7 is a cross-sectional view showing the inner peripheral surface shape of the die, and FIG. 8 is a cross-sectional view showing a state in which the surface of the molded product is ground. The figure is shown.
The same reference numerals are used for the members that are common to the first embodiment.

The molding apparatus shown in FIG. 6 is used in the roughing process in the manufacturing method of this embodiment. This forming apparatus is installed on a pressure receiving plate 83 having a lower punch 81 and a sleeve 82 in the center, and spring members 84 mounted on the pressure receiving plate 83, and the upper and lower ends thereof are opened to define the outer shape of the inner joint member 2. It is composed of a pair of upper and lower dies 9 to be formed, an upper punch 85 arranged to face the lower punch 81, and a drive unit 86 for driving the punch 85. As shown in FIG. 7, the inner peripheral shape of the cavity of the die 9 is slightly larger than the outer diameter of the cage 4 and the six projecting ridges 92 corresponding to the second guide groove 21 of the inner joint member 2. First outer peripheral surface 24 having an outer peripheral diameter
A first concave peripheral surface 94 for forming a second sliding contact peripheral surface 23 (to be the second sliding contact peripheral surface 23) on the molded product and a second outer peripheral surface 26 having an outer peripheral diameter smaller than the inner peripheral diameter of the cage 4 in a part or whole surface (later). The second concave peripheral surface 96 which forms the second non-sliding contact peripheral surface 25) on the molded product is formed.

In order to carry out the roughing process using this molding apparatus, the material product C having a predetermined shape is put into the cavity of the die 64, and the driving portion 86 is driven to drive the upper punch 8
5 is made to collide with the material item C. As a result, a molded product D having the outer peripheral shape of the inner joint member 2 corresponding to the inner peripheral shape of the die 9 is formed. That is, on the outer circumference of the inner joint member 2, six second guide grooves 21 and six outer peripheral surfaces formed along the circumferential direction between the second guide grooves 21 are formed. Is a first outer peripheral surface 24 having an outer peripheral diameter slightly larger than the inner peripheral diameter of the cage 4 and a second inner peripheral surface 26 having an outer peripheral diameter smaller than the outer peripheral diameter of the cage 4 on a part or the entire surface thereof. It is formed every other time.

Next, a surface grinding step of grinding the outer peripheral surface of the molded product D obtained in the roughing step is carried out. In this step, as shown in FIG. 8, using a tool (grinding stone) T, only the first outer peripheral surface 24 or a part of the first outer peripheral surface 24 and the second outer peripheral surface 26 is subjected to a grinding treatment including a polishing treatment, The first outer peripheral surface 24 has an outer peripheral diameter that is slidable with respect to the cage 4. That is,
The second outer peripheral surface 26 is entirely or partially formed with an outer peripheral diameter smaller than the inner peripheral diameter of the cage 4, so that surface grinding is not necessary or the amount of grinding is small. Note that the second guide groove 21 is also subjected to surface grinding treatment if necessary.

As described above, according to the manufacturing method of this embodiment, of the outer peripheral surface of the inner joint member 2, the second outer peripheral surface 26 which does not require grinding in the surface grinding step is formed in advance in the roughing step. Since only the first outer peripheral surface 24 or a part of the first outer peripheral surface 24 and the second outer peripheral surface 26 is ground in the surface grinding step, the life of the grindstone used for the grinding is approximately doubled, Moreover, the time required for the surface grinding step can be shortened. Thereby, the processing cost can be reduced. In this embodiment, the roughing process is performed by forging, but it is also possible to perform the roughing process by cutting or the like.

[0026]

According to the constant velocity joint of the first aspect of the invention, at least one of the inner peripheral surface of the outer joint member and the outer peripheral surface of the inner joint member is in sliding contact with the cage every other circumferential direction. Since the sliding contact peripheral surface and the non-sliding contact peripheral surface located at a position displaced in the radial direction from the sliding contact peripheral surface and not in full or partial sliding contact with the cage, surface grinding treatment to the non-sliding contact peripheral surface Since it can be avoided or reduced, the processing cost can be reduced.

According to the method for manufacturing a joint member according to the second aspect of the present invention, a plurality of inner peripheral surfaces formed in the circumferential direction between the first guide grooves have an outer circumference of the cage in every other circumferential direction. A first inner peripheral surface having an inner peripheral diameter slightly smaller than the diameter, and a second inner peripheral surface having an inner peripheral diameter larger than the outer peripheral diameter of the cage at a part or the entire surface.
The life of the grindstone used for surface grinding is extended because it includes a roughing process for forming the inner peripheral surface and a surface grinding process for surface grinding the first inner peripheral surface to an inner peripheral diameter slidable with the cage. Moreover, since the time required for the surface grinding step can be shortened, the processing cost can be reduced.

Further, according to the method for manufacturing a joint member according to the third invention, a plurality of outer peripheral surfaces formed in the circumferential direction between the respective second guide grooves have an inner peripheral surface of the cage in every other circumferential direction. A first outer peripheral surface having a first outer peripheral surface having an outer peripheral diameter slightly larger than the diameter and a second outer peripheral surface having an outer peripheral diameter smaller than the inner peripheral diameter of the cage on a part or the entire surface; Since it consists of a surface grinding step of grinding the surface to a slidable outer diameter with the cage, it is possible to extend the life of the grindstone used for surface grinding and shorten the time required for the surface grinding step. Can be reduced.

[Brief description of drawings]

FIG. 1 is a sectional view taken along an axial direction of a constant velocity joint according to a first embodiment.

FIG. 2 is a sectional view of a portion corresponding to line II-II in FIG.

FIG. 3 is a cross-sectional view showing a molding device for an outer joint member according to a second embodiment before and after molding.

FIG. 4 is a cross-sectional view showing an outer peripheral surface shape of a punch according to a second embodiment.

FIG. 5 is a cross-sectional view showing a state in which a molded product in Example 2 is subjected to surface grinding.

FIG. 6 is a cross-sectional view showing a molding device for an inner joint member according to a third embodiment before and after molding.

FIG. 7 is a cross-sectional view showing an inner peripheral inner peripheral shape of a die according to a third embodiment.

FIG. 8 is a cross-sectional view showing a state in which a molded product in Example 3 is subjected to surface grinding.

FIG. 9 is a sectional view taken along the axial direction of a conventional constant velocity joint.

10 is a sectional view of a portion corresponding to line XX of FIG. 9.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Outer joint member 2 ... Inner joint member 3 ... Ball 4 ... Cage 12 ... 1st guide groove 14 ... 1st sliding contact peripheral surface 16 ... 1st non-sliding contact peripheral surface 21 ... 2nd guide groove 23 ... 2 Sliding contact peripheral surface 25 ... Second non-sliding contact peripheral surface 41 ... (Cage) outer peripheral surface 43 ... (Cage) inner peripheral surface

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Aoyama 1-1, Asahi-cho, Kariya city, Aichi Toyota Koki Co., Ltd.

Claims (3)

[Claims] 1. An outer joint member having a tubular shape having one end opened and having a plurality of first guide grooves extending in the axial direction on the inner periphery thereof, and an outer periphery thereof coaxially arranged inside the outer joint member. An inner joint member having the same number of second guide grooves as the first guide grooves extending in the axial direction, and a plurality of balls rotatably arranged between the first and second guide grooves and transmitting torque. A cage that holds the balls and is interposed between the inner and outer joint members, and a plurality of cages are formed in the circumferential direction between the first guide grooves of the outer joint member. At least one of the inner peripheral surface that guides the inner peripheral surface of the cage and the outer peripheral surface that guides the inner peripheral surface of the cage between the second guide grooves of the inner joint member. The sliding contact peripheral surface that is in sliding contact with the cage and the position where a part or the entire surface is radially displaced from the sliding contact peripheral surface. Constant velocity joint has the cage and part or the entire surface, characterized in that it consists a non sliding peripheral surface on the sliding contact with. 2. An outer joint member having a tubular shape with one end opened and having a plurality of first guide grooves extending in the inner periphery on the inner periphery thereof, and an outer periphery thereof which is coaxially arranged inside the outer joint member. An inner joint member having the same number of second guide grooves as the first guide grooves extending in the axial direction, and a plurality of balls rotatably arranged between the first and second guide grooves and transmitting torque. A method for manufacturing the outer joint member in a constant velocity joint that holds the ball and is interposed between the inner and outer joint members, wherein the outer joint member is circumferentially formed between the first guide grooves. A plurality of inner peripheral surfaces are formed such that every other one in the circumferential direction has a first inner peripheral surface having an inner peripheral diameter slightly smaller than the outer peripheral diameter of the cage and an inner peripheral diameter larger than the outer peripheral diameter of the cage. A roughing process for forming a second inner peripheral surface on a part or the entire surface and the first inner peripheral surface for the case. Production method of the outer joint member, characterized in that it consists of a surface grinding step of surface grinding the inner circumference can be di and sliding. 3. An outer joint member having a tubular shape with one end opened and having a plurality of first guide grooves extending in the inner periphery on the inner periphery thereof, and an outer periphery thereof coaxially arranged inside the outer joint member. An inner joint member having the same number of second guide grooves as the first guide grooves extending in the axial direction, and a plurality of balls rotatably arranged between the first and second guide grooves and transmitting torque. A method for manufacturing the inner joint member in a constant velocity joint, comprising a cage that holds the ball and is interposed between the inner and outer joint members, wherein a circumferential direction is provided between the second guide grooves. The plurality of outer peripheral surfaces are formed such that every other outer peripheral surface has a first outer peripheral surface having an outer peripheral diameter slightly larger than the inner peripheral diameter of the cage and an outer peripheral diameter smaller than the inner peripheral diameter of the cage. A roughing process for forming a second outer peripheral surface on the entire surface, and the first outer peripheral surface for the case Manufacturing method of the inner joint member, characterized in that it consists of a surface grinding step of surface grinding the di and slidable outside diameter.