Positioning assembly, press fitting device, assembly apparatus and assembly method

Abstract

The application discloses a positioning assembly, a pressing device, an assembling device and an assembling method. The positioning assembly comprises a contact part and a limiting part. The contact part comprises a positioning block which is arranged to be movable to approach a workpiece. The limiting part has a non-interference position and an interference position. When the limiting part is in the non-interference position, the limiting part releases the limitation on the stroke of the positioning block, so that the positioning block can move to a contact position to contact the workpiece and keep the workpiece in a predetermined position. When the limiting part is in the interference position, the limiting part can limit the stroke of the positioning block, so that the positioning block cannot move to the contact position. The positioning assembly provided by the application switches the working state by switching the position of the limiting part, and realizes the technical effect that the positioning assembly is linked with the assembly performing the process action.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of mechanical part assembly, and more particularly, to a positioning assembly, a press-fitting device, an assembly device and an assembly method. BACKGROUND

[0002] A positioning assembly for positioning a workpiece often needs to have multiple working states to link with an assembly that performs a process action.

[0003] For example, in a combined machining process, the assembly that performs a process action is a plurality of cutters, and the workpiece has a plurality of surfaces to be machined; the positioning assembly is a clamp; during the machining process, the positioning assembly needs to maintain the clamping state of the workpiece; when switching the surface to be machined, the positioning assembly needs to release the clamping state of the workpiece.

[0004] For another example, in the assembly process of an assembled camshaft, for a camshaft that has been assembled in advance, the angular orientation of the cam deviates from the ideal position before the angular orientation of the cam is corrected, and the positioning assembly cannot immediately contact the cam, otherwise it will cause interference between the positioning assembly and the cam, damaging the outer surface of the cam or the positioning assembly. In this case, the cam should be disassembled first, and then the positioning assembly is used to correct the angular orientation of the cam, and the assembly is performed while maintaining the angular orientation. It can be seen that, during the process of correcting the angular orientation of the cam, the positioning assembly needs to have multiple working states to link with the assembly that assembles the cam.

[0005] Therefore, there is a need for a positioning assembly that can switch working states to achieve the technical effect of linking with the assembly that performs a process action. SUMMARY

[0006] In view of the above, the present application provides a positioning assembly, which comprises a contact part and a limiting part, wherein:

[0007] The contact part comprises a positioning block, which is arranged to be movable to approach a workpiece; and

[0008] The limiting part has a non-interference position and an interference position, wherein:

[0009] When the limiting part is in the non-interference position, the limiting part releases the limitation on the stroke of the positioning block, so that the positioning block can move to a contact position to contact the workpiece and keep the workpiece in a predetermined position;

[0010] When the limiting part is in the interference position, the limiting part can limit the stroke of the positioning block, so that the positioning block cannot move to the contact position.

[0011] Preferably, the locating blocks in the contact position are capable of contacting the outer circumferential surface of the workpiece to limit the translation and rotation of the workpiece.

[0012] Preferably, the contact portion comprises a stopper block, which is arranged to move synchronously with the locating blocks, wherein: when the limiting portion is in the interference position, the limiting portion is in contact with the stopper block, thereby limiting the stroke of the locating blocks by limiting the stroke of the stopper block.

[0013] Preferably, the locating blocks and the stopper block are capable of moving towards or away from the reference surface X.

[0014] Preferably, the locating blocks comprise a first locating block and a second locating block arranged symmetrically with respect to the reference surface X; the stopper block comprises a first stopper block and a second stopper block arranged symmetrically with respect to the reference surface X to correspond to the first locating block and the second locating block; and the limiting portion comprises a first limiting portion and a second limiting portion arranged symmetrically with respect to the reference surface X to correspond to the first stopper block and the second stopper block.

[0015] and,

[0016] The first locating block and the second locating block in the contact position can form a locating space, and the inner circumferential profile of the locating space can match the outer circumferential surface of the workpiece to hold the workpiece in a predetermined position.

[0017] Preferably, the first limiting portion and the second limiting portion form inclined surfaces extending gradually away from the reference surface X from top to bottom; and the first stopper block and the second stopper block form inclined surfaces capable of matching the first limiting portion and the second limiting portion.

[0018] and,

[0019] The limiting portion is arranged to be capable of moving up and down to switch between the interference position and the non-interference position.

[0020] Preferably, the first locating block and the second locating block are both V-shaped blocks to accommodate opposite angular positions of different workpieces, wherein: when the limiting portion is in the non-interference position, the V-shaped groove surfaces of the first locating block and the second locating block can form the locating space; and / or,

[0021] The predetermined position comprises a predetermined angular position and a predetermined central axis position, wherein: the predetermined central axis position is on the reference surface X.

[0022] The application also provides a press-fitting device, which comprises:

[0023] The aforementioned locating assembly; and,

[0024] a force receiving assembly arranged to abut against an end surface of the workpiece.

[0025] Preferably, the force receiving assembly comprises a first force receiving part and a second force receiving part arranged symmetrically to the reference surface X, each of the first force receiving part and the second force receiving part having an upper force receiving surface and a lower force receiving surface to abut against an upper end surface and a lower end surface of the workpiece respectively, and the first force receiving part and the second force receiving part are movable towards or away from the reference surface X; wherein:

[0026] the positioning block is mounted between the upper force receiving surface and the lower force receiving surface; and / or,

[0027] the first force receiving part and the second force receiving part are provided with a through hole along a central axis of the workpiece.

[0028] The application also provides an assembly device for an assembled camshaft, the assembled camshaft comprising a shaft body and a cam plate, the assembly device comprising:

[0029] The aforementioned press fitting device, wherein the cam plate is the workpiece of the press fitting device.

[0030] a shaft end positioning device for releasably locking the shaft body and capable of driving the shaft body to rotate to a predetermined angle and move along an axial direction of the shaft body; and

[0031] the press fitting device is movable relative to the shaft end positioning device in a direction perpendicular to a central axis of the shaft body.

[0032] The application also provides an assembly method for an assembled camshaft, the assembly method based on the aforementioned assembly device, the assembly method comprising the following steps:

[0033] locking the shaft body by the shaft end positioning device and making a central axis of the shaft body coincide with a reference surface X;

[0034] making the limiting part be in the interference position;

[0035] limiting the cam plate from moving relative to the shaft body in a direction perpendicular to an end surface of the cam plate by the force receiving assembly;

[0036] driving the shaft body to move by the shaft end positioning device to release the fitting state of the cam plate and the shaft body, so that the cam plate and the shaft body can relatively rotate;

[0037] making the limiting part be in the non-interference position to make the positioning block be able to contact the cam plate and hold the cam plate in a predetermined position;

[0038] The shaft is rotated to a predetermined angle using the shaft end positioning device.

[0039] The shaft is moved by the shaft end positioning device to restore the engagement state between the cam plate and the shaft.

[0040] The positioning component provided in this application switches its working state by changing the position of the limiting part. Specifically: when it is necessary to keep the workpiece in a predetermined position during the execution of a certain process, the limiting part switches to a non-interference position so that the positioning block can move to the contact position; when it is not necessary to keep the workpiece in the predetermined position during the execution of a certain process, the limiting part switches to an interference position so that the positioning block cannot move to the contact position, thereby achieving the technical effect of linkage between the positioning component and the component performing the process.

[0041] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0042] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application, and the illustrative embodiments and descriptions thereof are used to explain this application. In the drawings:

[0043] Figure 1 This is a schematic diagram of an assembly device according to one embodiment of this application;

[0044] Figure 2 This is a schematic diagram of a pressing device according to one embodiment of this application;

[0045] Figure 3 for Figure 2 This is a schematic diagram showing the positioning components, with the entity containing the upper load-bearing surface hidden.

[0046] Figure 4 for Figure 2 A cross-sectional view of the positioning assembly, cut along a direction perpendicular to the reference plane X.

[0047] Figure 5 for Figure 2 A cross-sectional view along the reference plane X, used to show the positioning component and the load-bearing component;

[0048] Figure 6 for Figure 2 A cross-sectional view along a direction perpendicular to the reference plane X and cut through the limiting part, used to show the inclined surface (outlined with dashed lines) where the first limiting part and the second limiting part, the first stop block and the second stop block cooperate.

[0049] Figure 7 This application provides an embodiment of an assembled camshaft with pre-installed cam plates.

[0050] Figure 8 a shaft body. Figure 7 of the shaft body.

[0051] Reference signs:

[0052] 1-positioning assembly, 11-contacting part, 111-positioning block, 112-positioning space, 113-stop block, 12-limiting part; 2-force bearing assembly, 21-upper force bearing surface, 22-lower force bearing surface, 23-through hole; 3-assembled camshaft, 31-cam piece, 32-shaft body; 4-shaft end positioning device. DETAILED DESCRIPTION

[0053] The technical solutions of the present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0054] In order to provide a positioning assembly 1 capable of switching working states to achieve the technical effect of linkage with the assembly performing process actions, the present application discloses a positioning assembly 1, which comprises a contacting part 11 and a limiting part 12, wherein:

[0055] The contacting part 11 comprises a positioning block 111, which is arranged to be movable to approach a workpiece; and

[0056] The limiting part 12 has a non-interference position and an interference position, wherein:

[0057] When the limiting part 12 is in the non-interference position, the limiting part 12 releases the restriction on the stroke of the positioning block 111, so that the positioning block 111 can be moved to a contacting position to contact the workpiece and hold the workpiece at a predetermined position;

[0058] When the limiting part 12 is in the interference position, the limiting part 12 can restrict the stroke of the positioning block 111, so that the positioning block 111 cannot be moved to the contacting position.

[0059] The contacting position is used to refer to a position of the positioning block 111, in which the positioning block 111 can contact the workpiece and hold the workpiece at a predetermined position to realize the positioning function of the positioning assembly 1 on the workpiece.

[0060] The predetermined position refers to the spatial position that the workpiece should be held during the execution of a process action.

[0061] The positioning assembly 1 switches the working state by switching the position of the limiting part 12, wherein: when the workpiece needs to be kept at a predetermined position during the execution of a certain process action, the limiting part 12 is switched to a non-interference position, so that the positioning block 111 can move to the contact position; when the workpiece does not need to be kept at a predetermined position during the execution of a certain process action, the limiting part 12 is switched to an interference position, so that the positioning block 111 cannot move to the contact position.

[0062] Since the positioning block 111 functions to limit certain degrees of freedom of movement of the workpiece by contacting the workpiece, the positioning block 111 can adopt appropriate contact positions with the workpiece according to different shapes of the workpiece and different predetermined position requirements. For example, for a shaft workpiece, if the predetermined position is a certain circumferential angle, the positioning block 111 can contact two end faces of the workpiece or contact the outer circumferential surface of the workpiece to limit the circumferential rotation of the workpiece. For a cam, a gear or other workpiece that has accuracy requirements for the angular position and coaxiality after assembly, the predetermined position can be a certain angular position and a certain central axis position of the workpiece, preferably, as shown in Figure 3 or Figure 4 The positioning block 111 in the contact position can contact the outer circumferential surface of the workpiece to limit the translation and rotation of the workpiece.

[0063] The positioning block 111 can be linked with the limiting part 12 in various appropriate ways to achieve the switching of the working state of the positioning assembly 1. For example, the limiting part 12 can be a pin for limiting, and the positioning block 111 has a hole or a groove matched with the pin. Preferably, as shown in Figure 3 or Figure 4 The contact part 11 includes a stop block 113, which is arranged to move synchronously with the positioning block 111, wherein: when the limiting part 12 is in the interference position, the limiting part 12 contacts the stop block 113, thereby limiting the stroke of the positioning block 111 by limiting the stroke of the stop block 113. Preferably, as shown in Figure 4 The positioning block 111 and the stop block 113 can move towards or away from the reference plane X.

[0064] It should be noted that the reference plane X is a virtual plane used to describe the spatial positions of the workpiece, the positioning assembly 1 of the present application, and the positioning assembly 1, the press-fitting device and the assembly equipment to be described later, as well as the positional relationship therebetween.

[0065] The positioning assembly 1 can be provided in different structures according to different shapes of the workpiece and different positioning requirements.

[0066] For example, for a shaft workpiece, if the predetermined position is a certain circumferential angle, the positioning assembly 1 can be configured to be movable towards or away from the two end faces of the workpiece, and since the shaft workpiece often has a certain length, the central axis of the workpiece can be arranged on the reference surface X, and the positioning block 111 of the positioning assembly 1 can be correspondingly arranged to have two parts separated from each other to approach the two end faces of the workpiece respectively, and the approaching direction is parallel to the central axis of the workpiece.

[0067] For example, as shown in Figure 3 or Figure 4 For a cam, gear and other workpieces, the predetermined position can be a certain angular position and a certain central axis position of the workpiece, wherein the ideal position of the central axis of the workpiece can be arranged on the reference surface X.

[0068] For example, the positioning assembly 1 of the present application is used for positioning the cam piece of the assembled camshaft 3, in order to enable the positioning block 111 in the contact position to be in contact with the outer peripheral surface of the cam piece as the workpiece, while not interfering with the shaft body 32 of the assembled camshaft 3, as shown in Figure 2 、 3 or 4, the positioning block 111 can include a first positioning block and a second positioning block arranged symmetrically with respect to the reference surface X; the stop block 113 can include a first stop block and a first stop block arranged symmetrically with respect to the reference surface X, corresponding to the first positioning block and the second positioning block; and the limiting portion 12 can include a first limiting portion and a second limiting portion arranged symmetrically with respect to the reference surface X, corresponding to the first stop block and the first stop block; and the first positioning block and the second positioning block in the contact position can form a positioning space 112 between them, the inner peripheral surface profile of the positioning space 112 can match the outer peripheral surface of the workpiece to keep the workpiece in the predetermined position. Preferably, the predetermined position includes a predetermined angular position and a predetermined central axis position, wherein the predetermined central axis position is on the reference surface X.

[0069] The limiting portion 12 and the stop portion can have a suitable structure to achieve the technical effect of switching the working state of the positioning assembly 1 by switching the position of the limiting portion 12. Preferably, as shown in Figure 6 the first limiting portion and the second limiting portion form inclined surfaces extending gradually away from the reference surface X from top to bottom; and the first stop block and the first stop block form inclined surfaces that can match the first limiting portion and the second limiting portion; and the limiting portion 12 is arranged to be movable up and down to switch between the interference position and the non-interference position:

[0070] When the first limiting part and the second limiting part move upward to the interference position, the first limiting part and the second limiting part can contact the first stop block and the first stop block to limit the first stop block and the first stop block from continuing to approach each other; and,

[0071] When the first limiting part and the second limiting part move downward to the non-interference position, the first limiting part and the second limiting part release the limitation on the stroke of the first stop block and the first stop block, so that the first stop block and the first stop block can continue to approach each other, and then the first positioning block and the second positioning block can be in the contact position.

[0072] The type of the positioning block 111 can be selected according to different shapes and positioning requirements of the workpiece. For the case that the workpiece is a cam, a gear or a shaft part and the like, and the angular position degree and the coaxiality after assembly have precision requirements, preferably, as shown in Figure 3 or Figure 4 , a V-shaped block can be selected as the positioning block 111. In order to make the positioning assembly 1 adapt to the opposite angular positions of different workpieces, and then avoid adjusting the direction of the positioning assembly 1 to save the assembly process beat, preferably, as shown in Figure 3 or Figure 4 , the first positioning block and the second positioning block are both V-shaped blocks, wherein: when the limiting part 12 is in the non-interference position, the V-shaped groove surface of the first positioning block and the second positioning block can form the positioning space 112.

[0073] In the process of pressing the workpiece, it is usually necessary to keep the workpiece at a predetermined position, so that the workpiece after assembly meets the predetermined position requirement, such as angular position degree, center axis position degree and the like. At the same time, the positioning assembly 1 for positioning the workpiece often needs to have multiple working states to keep or release the positioning of the workpiece in different steps of the assembly process.

[0074] Therefore, the present application provides a pressing device, which comprises the aforementioned positioning assembly 1; and a force bearing assembly 2, which is arranged to abut against and support the end face of the workpiece to generate a relative force with the end face of the workpiece, and then limit the movement of the workpiece in the direction perpendicular to the end face.

[0075] The positioning assembly 1 and the force bearing assembly 2 can adopt a suitable mounting relationship, preferably, the positioning block is mounted between the upper force bearing surface and the lower force bearing surface and is arranged to be able to move synchronously with the force bearing assembly. In order to enable the force bearing assembly to approach the end surface of the workpiece to form a contact support when the limiting part is in the interference position, preferably, the positioning block has an initial position when it is not subjected to the force from the limiting part, the positioning block in the initial position moves synchronously with the force bearing assembly and is able to move to the contact position; when the limiting part is in the interference position, the force from the limiting part causes the positioning block and the force bearing assembly to produce a relative movement in a direction perpendicular to the reference surface X, away from the workpiece within a predetermined range, the relative movement causes the positioning block to be unable to move to the contact position; after the limiting part removes the limitation on the stroke of the positioning block, the positioning block returns to the initial position and is able to contact the workpiece; the relative movement can be achieved by a suitable manner, preferably, a self-resetting mechanism is arranged between the positioning block and the force bearing assembly, the self-resetting mechanism includes a connecting member capable of elastically deforming in the direction of the relative movement, when the limiting part is in the interference position, the force from the limiting part causes the connecting member to produce a deformation, so that the positioning block and the force bearing assembly produce the relative movement.

[0076] In the case of using the pressing device for assembling an axle part, the axle part includes an axle body 32 and a gear, a cam or the like assembled on the axle body 32, wherein the workpiece is the gear, the cam or the like. The pressing device is used for positioning the workpiece when the axle body 32 of the axle part moves in the axial direction and limiting the movement of the workpiece in the direction perpendicular to the end surface, so as to realize the relative movement between the workpiece and the axle body 32. The specific working process of the pressing device is as follows: firstly, the limiting part 12 is in the interference position, and the positioning block 111 is not in contact with the workpiece, which is done for the purpose that, for the axle part assembled in advance, the angular direction of the workpiece deviates from the ideal position when the workpiece has not been corrected, the positioning assembly 1 cannot immediately contact the workpiece, otherwise the interference between the positioning assembly 1 and the workpiece will damage the workpiece or the outer surface of the positioning assembly 1; secondly, the workpiece is pushed away from the position assembled in advance to remove the assembled state, in this process, the force bearing assembly 2 can contact support the end surface of the workpiece, thereby limiting the movement of the workpiece in the direction perpendicular to the end surface, so as to realize the relative movement between the workpiece and the axle body 32; finally, the angular position and the central axis position of the workpiece are corrected by the positioning assembly 1, and the assembled state of the workpiece and the axle body 32 is restored while the angular position and the central axis position are maintained.

[0077] To prevent the load-bearing component 2 from interfering with the shaft body 32 of the shaft-like part during its approach to the workpiece, preferably, the load-bearing component 2 includes a first load-bearing part and a second load-bearing part symmetrically arranged about the reference plane X. Both the first and second load-bearing parts have an upper load-bearing surface 21 and a lower load-bearing surface 22, respectively abutting against the upper and lower end faces supporting the workpiece; and the first and second load-bearing parts are movable towards or away from the reference plane X; wherein: the positioning block 111 is installed between the upper load-bearing surface 21 and the lower load-bearing surface 22; and through holes 23 are formed along the central axis of the workpiece at the contact points between the first and second load-bearing parts and the workpiece, allowing the shaft body 32 of the shaft-like part to pass through.

[0078] This application also provides an assembly device for an assembled camshaft 3, such as... Figure 7 and Figure 8 As shown, the assembled camshaft 3 includes a shaft body 32 and a cam plate 31, and the assembly equipment includes the aforementioned pressing device, wherein the cam plate serves as the workpiece of the pressing device;

[0079] The assembly equipment also includes a shaft end positioning device 4, such as Figure 1 As shown, the shaft end positioning device 4 is used to releasably lock the shaft body 32 of the assembled camshaft 3 and can drive the shaft body 32 to rotate to a predetermined angle and move along the axial direction of the shaft body 32; and the pressing device can move relative to the shaft end positioning device 4 in a direction perpendicular to the central axis of the shaft body 32 so that the shaft body 32 can pass through the through hole 23.

[0080] With the assembly device used for assembling the assembled camshaft as an example, the workpiece is a cam piece of the assembled camshaft, the assembly device is used for positioning the cam piece when the shaft body 32 of the assembled camshaft moves in the axial direction, and limiting the movement of the cam piece in the direction perpendicular to the end face, so as to realize the relative movement of the cam piece and the shaft body 32. The specific working process of the assembly device is as follows: first, the limiting part 12 is in the interference position, and the positioning block 111 is not in contact with the cam piece, which is to prevent the positioning assembly 1 from immediately contacting the cam when the cam angle is deviated from the ideal position, so as to avoid the interference between the positioning assembly 1 and the cam and damage the outer surface of the cam or the positioning assembly 1; second, the cam piece is pushed away from the pre-assembled position to release the assembly state, and in this process, the force bearing assembly 2 can abut against the end face supporting the cam piece, thereby limiting the movement of the cam piece in the direction perpendicular to the end face, so as to realize the relative movement of the cam piece and the shaft body 32; finally, the positioning assembly 1 corrects the angular position and the central axis position of the cam, and restores the assembly state of the cam piece and the shaft body 32 while keeping the angular position and the central axis position.

[0081] The application also provides an assembly method for an assembled camshaft, which is based on the above-mentioned assembly device, and the assembly method comprises the following steps:

[0082] Locking the shaft body 32 by the shaft end positioning device 4, and making the central axis of the shaft body 32 coincide with the reference surface X;

[0083] Making the limiting part 12 be in the interference position, and the positioning block 111 is not in contact with the cam piece;

[0084] Limiting the movement of the cam piece relative to the shaft body 32 in the direction perpendicular to the end face by the force bearing assembly 2;

[0085] Driving the shaft body 32 to move by the shaft end positioning device 4, so as to release the cooperation state of the cam piece and the shaft body 32, and make the cam piece and the shaft body 32 can rotate relative to each other;

[0086] Making the limiting part 12 be in the non-interference position, so that the positioning block 111 can contact the cam piece and keep the cam piece in a predetermined position;

[0087] Rotating the shaft body 32 to a predetermined angle by the shaft end positioning device 4;

[0088] The shaft body 32 is driven by the shaft end positioning device 4 to move along the axial direction to restore the matching state of the cam plate and the shaft body 32, and in the moving process, the positioning block 111 keeps contacting the cam plate to continuously keep the cam plate in the predetermined position.

[0089] When a plurality of cam plates 31 need to be assembled on the shaft body 32, the pre-assembled assembled camshaft 3 in this case is as shown in the figure. Figure 7 The assembling method preferably comprises the following steps:

[0090] The shaft body 32 is locked by the shaft end positioning device 4, and the central axis of the shaft body 32 coincides with the reference surface X;

[0091] The shaft body 32 is driven by the shaft end positioning device 4 to move along the axial direction, so that one of the cam plates 31 can be in the positioning space 112;

[0092] The limiting part 12 is in the interference position, and the first and second force receiving parts move towards the reference surface X, and the first and second positioning blocks also move synchronously, and since the limiting part 12 is in the interference position, the positioning block 111 is not in contact with the cam plate;

[0093] The cam plate is limited from moving relative to the shaft body 32 in the direction perpendicular to the end surface by the force receiving assembly 2;

[0094] The shaft body 32 is driven by the shaft end positioning device 4 to move, so as to release the matching state of the cam plate and the shaft body 32, and the cam plate and the shaft body 32 can rotate relative to each other;

[0095] The limiting part 12 is in the non-interference position, so that the positioning block 111 can contact the cam plate and keep the cam plate in the predetermined position;

[0096] The shaft body 32 is rotated to a predetermined angle by the shaft end positioning device 4;

[0097] The shaft body 32 is driven by the shaft end positioning device 4 to move along the axial direction to restore the matching state of the cam plate and the shaft body 32, and in the moving process, the positioning block 111 keeps contacting the cam plate to continuously keep the cam plate in the predetermined position;

[0098] The first and second force receiving parts move away from the reference surface X, and the first and second positioning blocks also move synchronously to release the interference support and positioning of the cam plate 31;

[0099] The above steps are repeated to assemble another cam plate 31 until all the cam plates 31 are assembled.

[0100] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product disclosed in the present application is usually placed during use, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the product referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0101] The preferred embodiments of the present application are described in detail above, but the present application is not limited to the specific details in the above-described embodiments, and various simple modifications can be made to the technical solutions of the present application within the technical concept of the present application, and these simple modifications all belong to the protection scope of the present application.

[0102] In addition, it should be noted that each specific technical feature described in the above specific embodiments can be combined in any appropriate manner without contradiction, and in order to avoid unnecessary repetition, various possible combinations are not described again in the present application.

[0103] In addition, any combination of various different embodiments of the present application can also be made as long as it does not deviate from the idea of the present application, and it should also be considered as disclosed in the present application.

Claims

1. An assembly apparatus for an assembled camshaft, the assembled camshaft (3) comprising a cam plate (31) and a shaft body (32), characterized in that, The assembly equipment includes: Press fitting device and shaft end positioning device (4); The pressing device includes a positioning component (1) and a load-bearing component (2). The positioning component (1) includes a contact portion (11) and a limiting portion (12), wherein: The contact portion (11) includes a positioning block (111) configured to move to approach the workpiece; and The limiting part (12) has a non-interference position and an interference position, wherein: When the limiting part (12) is in the non-interference position, the limiting part (12) releases the restriction on the stroke of the positioning block (111), so that the positioning block (111) can move to the contact position to contact the workpiece and hold the workpiece in the predetermined position; When the limiting part (12) is in the interference position, the limiting part (12) can restrict the stroke of the positioning block (111) so that the positioning block (111) cannot move to the contact position; The contact part (11) includes a stop block (113), the stop block (113) and the positioning block (111) are configured to move synchronously, wherein: when the limiting part (12) is in the interference position, the limiting part (12) contacts the stop block (113), thereby limiting the stroke of the positioning block (111) by limiting the stroke of the stop block (113); The positioning block (111) includes a first positioning block and a second positioning block arranged symmetrically with respect to the reference plane X; the stop block (113) includes a first stop block and a second stop block arranged symmetrically with respect to the reference plane X, so as to correspond to the first positioning block and the second positioning block. Both the first and second positioning blocks are V-shaped blocks to accommodate opposite angular positions of different workpieces, wherein: when the limiting part (12) is in the non-interference position, the V-shaped groove surfaces of the first and second positioning blocks can form the positioning space (112); and / or, The predetermined position includes a predetermined angular position and a predetermined central axis position, wherein the predetermined central axis position is on the reference plane X; The load-bearing component (2) is configured to abut against the end face supporting the workpiece; The load-bearing component (2) includes a first load-bearing part and a second load-bearing part symmetrically arranged about the reference plane X. Both the first load-bearing part and the second load-bearing part have an upper load-bearing surface (21) and a lower load-bearing surface (22) to respectively abut against the upper and lower end faces supporting the workpiece; and the first load-bearing part and the second load-bearing part are capable of moving towards or away from the reference plane X; wherein: The positioning block (111) is installed between the upper bearing surface (21) and the lower bearing surface (22); and / or, the positions where the first bearing part and the second bearing part contact the workpiece are provided with through holes (23) along the central axis of the workpiece. The cam plate (31) serves as the workpiece of the pressing device; The shaft end positioning device (4) is used to releasably lock the shaft (32) and drive the shaft (32) to rotate to a predetermined angle and move along the axial direction of the shaft (32); and the pressing device is able to move relative to the shaft end positioning device (4) in a direction perpendicular to the central axis of the shaft (32).

2. The assembly equipment for assembled camshafts according to claim 1, characterized in that, The positioning block (111) in the contact position can contact the outer peripheral surface of the workpiece to restrict the translation and rotation of the workpiece.

3. The assembly equipment for assembled camshafts according to claim 1, characterized in that: The limiting part (12) includes a first limiting part and a second limiting part symmetrically arranged with respect to the reference plane X, corresponding to the first stop block and the second stop block; and, a positioning space (112) can be formed between the first positioning block and the second positioning block at the contact position, and the inner peripheral surface profile of the positioning space (112) can match the outer peripheral surface of the workpiece to keep the workpiece in a predetermined position. And / or, the positioning block and the stop block can move toward or away from the reference plane X.

4. The assembly equipment for assembled camshafts according to claim 3, characterized in that: The first limiting portion and the second limiting portion form inclined surfaces that gradually extend away from the reference plane X from top to bottom; and the first stop block and the second stop block form inclined surfaces that can match the first limiting portion and the second limiting portion. The limiting part (12) is configured to move up and down to switch between the interference position and the non-interference position.

5. An assembly method for an assembled camshaft, the assembly method using the assembly equipment of claim 4, characterized in that, The assembly method includes the following steps: The shaft body (32) is locked by the shaft end positioning device (4), and the central axis of the shaft body (32) coincides with the reference plane X. Position the limiting part (12) in the interference position; The load-bearing component (2) restricts the movement of the cam plate (31) relative to the shaft (32) in a direction perpendicular to its end face; The shaft body (32) is driven to move by the shaft end positioning device (4) to release the engagement state between the cam plate (31) and the shaft body (32), so that the cam plate (31) and the shaft body (32) can rotate relative to each other; The limiting part (12) is placed in the non-interference position so that the positioning block (111) can contact the cam plate (31) and hold the cam plate (31) in the predetermined position; The shaft (32) is rotated to a predetermined angle by means of the shaft end positioning device (4); The shaft body (32) is driven to move along the axial direction by the shaft end positioning device (4) to restore the engagement state between the cam plate (31) and the shaft body (32).

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