A bottom base is suitable for the precise positioning of the profile of a UF precision forged ball race

Abstract

The application relates to a UF precision positioning base suitable for a precision positioning of a ball channel contour of a precision forging, which comprises a base plate, a stand column is fixed at the center of the base plate, a plurality of positioning ball heads are circumferentially arranged on the stand column and can slide towards the center of the stand column or away from the center of the stand column, springs are arranged between the positioning ball heads and the stand column, and the elastic force of the springs drives the positioning ball heads to slide away from the center of the stand column. The application has the effect of improving the equal-division precision of a UF outer star wheel precision forging ball channel.

Description

Technical Field

[0001] This application relates to the field of universal joint component processing, and in particular to a precision positioning base suitable for UF precision forged ball track profile. Background Technology

[0002] The UF-type outer star wheel is a key component of the constant velocity universal joint, used in the constant velocity universal drive shaft of automobiles. In the past, the UF-type outer star wheel was made by rough milling the ball track on the blank and then hard milling the ball track. During the hard milling of the ball track, it is necessary to position and align the ball track to achieve the pre-positioning function.

[0003] Existing fairway staking (such as) Figure 1 (As shown) includes a disc-shaped base 1 and three positioning pins 0 bolted to the base. During product processing, a robotic arm picks up the product, adjusts the angle of the inner cavity ball track, and then places it on the ball track positioning seat. The product, under its own weight, contacts the positioning ball head, positioning the product to achieve the purpose of aligning and dividing the ball track. Since the ball track has undergone rough milling, the base and three positioning pins can meet the positioning and alignment requirements. However, the UF type outer star wheel has a precision-forged ball track profile, omitting the rough milling process. When hard milling the ball track, using the existing ball track positioning seat will result in poor equivalence accuracy of the UF precision-forged ball track. Utility Model Content

[0004] To improve the accuracy of equal division of the UF-type outer planet wheel precision forged ball track, this application provides a base suitable for precise positioning of the UF precision forged ball track contour.

[0005] This application provides a technical solution for a precision positioning base suitable for UF precision forged ball track contours, using the following approach:

[0006] A precision positioning base for UF precision forged ball track contours includes a chassis, a column fixedly mounted at the center of the chassis, and a plurality of positioning ball heads slidably mounted on the column. The positioning ball heads slide toward or away from the center of the column. A spring is provided between the positioning ball heads and the column, and the elastic force of the spring drives the positioning ball heads to slide away from the center of the column.

[0007] By adopting the above technical solution, when the UF-type alien wheel is placed by the robotic arm, it falls freely under gravity. First, the ball track of the UF-type alien wheel will contact the positioning ball head connected to the spring. Gravity drives the positioning ball head into the column and compresses the spring. During the descent, the spring is compressed and generates an outward force, ensuring that the ball track is precisely positioned without gaps during the descent, thereby improving the accuracy of the ball track division. When the UF-type alien wheel falls to a certain position, the positioning body will abut against the UF-type alien wheel to maintain support for it.

[0008] Optionally, a limiting post is fixed at one end of the positioning post inserted into the column, and the spring is sleeved outside the limiting post.

[0009] By adopting the above technical solution, the limiting post can restrict the slippage of the spring and guide the slippage direction when the spring is compressed, thereby reducing the change in the direction of the spring force caused by the change in the direction of spring slippage or compression, and improving the stability of the spring force output.

[0010] Optionally, the column has a chamfer at the end opposite to the chassis.

[0011] By adopting the above technical solution, the chamfer on the column can guide the UF-type alien wheel when it is placed by the robot arm.

[0012] Optionally, a bolt hole is provided at the center of the column, and the bolt hole penetrates the column and the base.

[0013] By adopting the above technical solution, the bolt holes can be used to fix the chassis on the one hand, and to reduce the weight of the column and chassis on the other hand.

[0014] Optionally, a fixing bolt is threaded into the bottom of the chassis, and the fixing bolt passes through the chassis and abuts against the positioning ball head.

[0015] By adopting the above technical solution, the setting of the fixing bolt can limit the slippage of the positioning ball head when tightening, thereby fixing the positioning ball.

[0016] Optionally, a limiting groove is provided on the positioning ball head, and the fixing bolt is inserted into the limiting groove. The fixing bolt can slide and abut against the bottom of the limiting groove or disengage from the bottom of the limiting groove by rotation.

[0017] By adopting the above technical solution, the limiting groove can work with the fixing bolt to restrict the rotation of the positioning ball head, thereby reducing the probability of the spring being damaged by the torsional force generated by the rotation of the positioning ball head.

[0018] Optionally, the chassis is provided with a number of positioning holes.

[0019] By adopting the above technical solution, the positioning holes can be used to position the chassis and reduce the probability of the chassis rotating under stress.

[0020] In summary, this application includes at least one of the following beneficial technical effects:

[0021] 1. When the UF-type alien wheel is placed by a robotic arm, it falls freely under gravity. First, the ball track of the UF-type alien wheel will contact the positioning ball head connected to the spring. Gravity will drive the positioning ball head into the column and compress the spring. During the descent, the spring is compressed and generates an outward force, ensuring that the ball track is precisely positioned without gaps during the descent, thereby improving the accuracy of the ball track division. When the UF-type alien wheel falls to a certain position, the positioning body will abut against the UF-type alien wheel to maintain support for it.

[0022] 2. The chamfer on the column can guide the UF-type alien wheel when it is placed by the robotic arm;

[0023] 3. The bolt holes can be used to fix the chassis and also to reduce the weight of the columns and chassis;

[0024] 4. The fixing bolts restrict the slippage of the positioning ball head when tightened, thus fixing the positioning ball. The limiting groove works with the fixing bolts to restrict the rotation of the positioning ball head, thereby reducing the probability of damage to the spring caused by the torsional force generated by the rotation of the positioning ball head. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the existing fairway positioning seat.

[0026] Figure 2 This is a schematic diagram of the overall structure of an embodiment of this application.

[0027] Figure 3 This is a cross-sectional view of the overall structure of an embodiment of this application.

[0028] Explanation of reference numerals in the attached diagram: 0, positioning post; 1, chassis; 2, column; 3, positioning ball head; 4, spring; 5, limiting post; 6, chamfer; 7, bolt hole; 8, fixing bolt; 9, limiting groove; 10, positioning hole. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 2-3 This application will be described in further detail.

[0030] First, it should be noted that in the description of this application, the use of directional terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicates the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used solely for descriptive purposes and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the use of numerical quantifiers such as "first," "second," and "third" is for descriptive purposes only and should not be construed as indicating or implying relative importance. Additionally, in this application, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, interference fits, transition fits, or integral connections; they can refer to direct connections or indirect connections through an intermediate medium. Therefore, those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] This application discloses a precision positioning base suitable for UF precision forged ball track contours, referring to... Figure 2 and Figure 3 The device includes a disc-shaped chassis 1, with a column 2 fixed at the center of the chassis 1. The column 2 is concentric with the chassis 1. Several positioning ball heads 3 are slidably arranged around the column 2. In this embodiment, three positioning ball heads 3 are arranged around the column 2. The positioning ball heads 3 slide towards or away from the center of the column 2. A spring 4 is provided between the positioning ball head 3 and the column 2. The elastic force of the spring 4 drives the positioning ball head 3 to slide away from the center of the column 2. When the UF-type outer wheel is placed by the robotic arm, it falls freely under gravity. First, the ball track of the UF-type outer wheel will contact the positioning ball head 3 connected to the spring 4. Gravity drives the positioning ball head 3 into the column 2 and compresses the spring 4. During the descent, the spring 4 is compressed and forms an outward force, ensuring that the ball track is precisely positioned without gaps during the descent, thereby improving the accuracy of the ball track division. When the product falls to a certain position, the positioning body will abut against the UF-type outer wheel to maintain support for it.

[0032] Reference Figure 2 and Figure 3 The positioning ball head 3 is inserted into one end of the column 2 and a limiting post 5 is fixed thereon. The spring 4 is sleeved outside the limiting post 5. The limiting post 5 can restrict the sliding of the spring 4 and guide the sliding direction of the spring 4 when it is compressed, thereby reducing the change in the direction of the spring force caused by the change in the direction of the spring 4 when it slides or is compressed, and improving the stability of the spring force output.

[0033] Reference Figure 2 and Figure 3The column 2 has a chamfer 6 at one end away from the chassis 1. The chamfer 6 can guide the UF-type outer wheel when it is placed by the robot arm. The column 2 has a bolt hole 7 in the center. The bolt hole 7 passes through the column 2 and the chassis 1. The bolt hole 7 can be used to fix the chassis 1 on the one hand, and to reduce the weight of the column 2 and the chassis 1 on the other hand.

[0034] Reference Figure 2 and Figure 3 The bottom of the chassis 1 is threaded with a fixing bolt 8, which passes through the chassis 1 and abuts against the positioning ball head 3. The fixing bolt 8 can restrict the slippage of the positioning ball head 3 when tightened, thus fixing the positioning ball head 3. A limiting groove 9 is opened on the positioning ball head 3. The fixing bolt 8 is inserted into the limiting groove 9. The fixing bolt 8 can slide and abut against the bottom of the limiting groove 9 or disengage from the bottom of the limiting groove 9 by rotating. The limiting groove 9 can cooperate with the fixing bolt 8 to restrict the rotation of the positioning ball head 3, thereby reducing the probability of the spring 4 being damaged by the torsional force generated by the rotation of the positioning ball head 3.

[0035] Reference Figure 2 and Figure 3 The chassis 1 has several positioning holes 10. In this embodiment, two positioning holes 10 are provided. The positioning holes 10 are used to insert positioning pins. The positioning holes 10 facilitate the insertion of positioning pins, thereby positioning the chassis 1 and reducing the probability of the chassis 1 rotating under force.

[0036] The implementation principle of this application embodiment is as follows: After the chassis 1 is installed with bolts, the chassis 1 is installed and positioned by inserting a positioning pin in the positioning hole 10. The UF-type outer star wheel is placed on the column 2 by a robot arm. The UF-type outer star wheel falls under the action of gravity by the guide of the chamfer 6 on the column 2. The ball track of the UF-type outer star wheel slides and compresses the spring 4 by driving the positioning ball head 3 to fall. When the UF-type outer star wheel falls to a certain height, the elasticity of the spring 4 drives the positioning ball head 3 to slide and abut against the ball track of the UF-type outer star wheel to position the UF-type outer star wheel for subsequent assembly and processing.

[0037] It should be noted that the above embodiments are only used to illustrate this application and are not intended to limit the technical solutions described in this application. Although this specification has described this application in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to this application. All technical solutions and improvements that do not depart from the spirit and scope of this application should be covered within the scope of the claims of this application.

Claims

1. A precision positioning base for UF precision forged ball track contours, characterized in that: Includes a chassis (1), with a column (2) fixed at the center of the chassis (1). The column (2) is circumferentially slidably provided with a plurality of positioning ball heads (3). The positioning ball heads (3) slide toward the center of the column (2) or away from it. A spring (4) is provided between the positioning ball heads (3) and the column (2). The elastic force of the spring (4) drives the positioning ball heads (3) to slide toward the center of the column (2).

2. A precision positioning base for UF precision forged ball track contours according to claim 1, characterized in that: The positioning ball head (3) is inserted into one end of the column (2) and a limiting post (5) is fixed thereon. The spring (4) is sleeved on the limiting post (5).

3. A precision positioning base for UF precision forged ball track contours according to claim 2, characterized in that: The column (2) has a chamfer (6) at one end away from the chassis (1).

4. A precision positioning base for UF precision forged ball track contours according to claim 3, characterized in that: The column (2) has a bolt hole (7) in the center, and the bolt hole (7) passes through the column (2) and the base (1).

5. A precision positioning base for UF precision forged ball track contours according to claim 4, characterized in that: The bottom of the chassis (1) is threaded with a fixing bolt (8), which passes through the chassis (1) and abuts against the positioning ball head (3).

6. A precision positioning base for UF precision forged ball track contours according to claim 5, characterized in that: The positioning ball head (3) has a limiting groove (9), and the fixing bolt (8) is inserted into the limiting groove (9). The fixing bolt (8) slides and abuts against the bottom of the limiting groove (9) or moves away from the bottom of the limiting groove (9) by rotation.

7. A precision positioning base for UF precision forged ball track contours according to claim 1, characterized in that: The chassis (1) has several positioning holes (10).

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