Shell clamping tool, bidirectional press-fitting device and press-fitting method

Abstract

The invention discloses a shell clamping tool, a bidirectional press-fitting device and a press-fitting method, and belongs to the technical field of shell press-fitting. The clamping platform is arranged above the supporting stand column, a first clamping hole matched with the shell in shape is formed in the center of the clamping platform, the shell is positioned in the center of the clamping platform, and the upper portion and the lower portion, to be pressed, of the shell are both located within the range of the first clamping hole; the positioning assembly stretches out or retracts back relative to the clamping platform, and the positioning assembly stretches out of the clamping platform and then positions the shell. Fasteners are connected to the periphery of the shell to fix the shell. The to-be-pressed parts of the upper portion and the lower portion of the shell are both located in the leakage range of the first clamping hole, the upper bearing and the lower bearing of the shell can be pressed at the same time in cooperation with press-fitting equipment, the lower bearing does not need to be subjected to turning, clamping and re-positioning press-fitting after the upper bearing is pressed, time is saved, and efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of shell press-fitting, and in particular to a shell clamping tool, a bidirectional press-fitting device and a press-fitting method. Background Art

[0002] The gearbox of a new energy vehicle adopts a three-box structure, and the bearings and related gear shaft systems are assembled on the intermediate housing, such as Figure 1 , Figure 2 The upper and lower structures of the central housing of the new energy gearbox are shown in the figure. The upper bearings to be press-fitted include the first deep groove ball bearing 103, the second deep groove ball bearing 104, the first cylindrical roller bearing 105 and the second cylindrical roller bearing 106, and the lower bearings to be press-fitted include the third cylindrical roller bearing 107, the first connecting sleeve 108 and the second connecting sleeve 109.

[0003] The current housing clamping tooling is only suitable for one-way press-fitting. When the housing assembly needs to have press-fitted bearings in both the forward and reverse directions, the housing needs to be turned around and clamped to reposition and press-fit the next bearing after each press-fitting. The housing needs to be clamped and positioned repeatedly, which takes a long time, is inefficient, and requires a lot of manpower. Secondly, in the trial production stage, facing the press-fitting requirements of multiple models and multiple gearbox housings and bearings, it is necessary to design multiple sets of different positioning tooling to match them, which requires a large tooling cost and requires more storage and space.

[0004] Therefore, it is of great significance to study a flexible clamping tool and pressing device that can press multiple bearings at the same time. Summary of the invention

[0005] The purpose of the present invention is to provide a shell clamping tool, a bidirectional press-fitting device and a press-fitting method, which solves the defect that the existing shell clamping tool is only suitable for unidirectional press-fitting.

[0006] The present invention provides the following scheme:

[0007] In a first aspect, the present invention describes a shell clamping tool, comprising: a support column;

[0008] A clamping platform is arranged above the supporting column, a first clamping hole matching the shape of the shell is provided at the center of the clamping platform, the shell is positioned at the center of the clamping platform, and the upper and lower parts of the shell to be pressed are both within the range of the first clamping hole;

[0009] A positioning component, the positioning component extends or retracts relative to the clamping platform, and the positioning component positions the housing after extending from the clamping platform;

[0010] A fastener is connected around the shell to fix the shell.

[0011] Preferably, the positioning assembly comprises a positioning pin and a positioning pin seat;

[0012] The positioning pin seat is fixed below the clamping platform, and a slide groove is provided on one side of the positioning pin seat, and the slide groove includes a first slide groove, a second slide groove and a third slide groove; the first slide groove is vertically arranged, the second slide groove and the third slide groove are horizontally arranged, and one end of the second slide groove and one end of the third slide groove are respectively connected to the upper and lower ends of the first slide groove;

[0013] The positioning pin includes a vertically connected pin column and a stop column; the stop column slides in the first slide groove, the second slide groove and the third slide groove; the pin is rotatably connected to the first slide groove through the stop column, and slides up and down in the first slide groove, and the pin slides upward and extends out of the clamping platform to enter the positioning hole of the shell.

[0014] Preferably, it also includes a plurality of height adjustment pads;

[0015] The height adjustment gasket is arranged between the clamping platform and the shell, and a second clamping hole matching the shape of the shell is opened at the center of the height adjustment gasket, so that the upper and lower parts of the shell to be pressed are both within the range of the second clamping hole.

[0016] In a second aspect, the present invention describes a bidirectional press-fitting device, comprising: a base;

[0017] The shell clamping tool is arranged on the base;

[0018] The upper press-fit assembly and the lower press-fit assembly are respectively located above and below the first clamping hole, and press-fit the upper and lower parts of the shell respectively; the upper press-fit assembly and the lower press-fit assembly both slide along the first direction and the second direction.

[0019] Preferably, a guide column is provided on the base, an upper support plate is fixed to the upper end of the guide column, and an upper base plate is slidably connected to the middle part; the upper and lower ends of the upper ejection mechanism are respectively connected to the lower end of the upper support plate and the upper end of the upper base plate, and the lower end of the upper ejection mechanism ejects or retracts downward; the upper end of the upper press-fitting assembly is connected to the lower end of the upper base plate, and the lower end of the upper press-fitting assembly presses the upper part of the shell;

[0020] A lower ejection mechanism is arranged on the base, and the upper end of the lower ejection mechanism ejects or retracts upward; the upper end of the lower ejection structure is connected to a lower base plate; the lower end of the lower press-fitting assembly is connected to the upper end of the lower base plate, and the upper end of the lower press-fitting assembly presses the lower part of the shell.

[0021] Preferably, the upper substrate comprises a first upper substrate and a second upper substrate which are perpendicular to each other;

[0022] An upper substrate sliding groove extending along the first direction is provided in the middle of the first upper substrate, and a first sliding block sliding in the upper substrate sliding groove is provided at the upper end of the second upper substrate;

[0023] An upper substrate slide rail extending along the second direction is arranged at the lower end of the second upper substrate, first slide rail grooves extending along the second direction are arranged on both sides of the upper substrate slide rail, and a second slider sliding in the first slide rail groove is arranged at the upper end of the upper press-fit assembly.

[0024] Preferably, the lower substrate comprises a first lower substrate and a second lower substrate which are perpendicular to each other;

[0025] A lower substrate sliding groove extending along the first direction is provided in the middle of the first lower substrate, and a third sliding block sliding in the lower substrate sliding groove is provided at the lower end of the second lower substrate;

[0026] A lower substrate slide rail extending along the second direction is disposed at the upper end of the second lower substrate, second slide rail grooves extending along the second direction are disposed on both sides of the lower substrate slide rail, and a fourth slider sliding in the second slide rail groove is disposed at the lower end of the lower press-fit assembly.

[0027] Preferably, the upper press-fitting assembly comprises an upper jack and an upper press head; the upper end of the upper jack is slidably connected to the lower end of the second upper base plate through the second slider, and the upper press head is connected to the head at the lower end of the upper jack to press-fit the upper part of the shell;

[0028] The lower press-fitting assembly includes a lower jack and a lower press head; the lower end of the lower jack is slidably connected to the upper end of the second lower base plate through the fourth slider, and the lower press head is connected to the top head at the upper end of the lower jack to press-fit the lower part of the shell.

[0029] Preferably, the crimping surface of the upper pressing head and the crimping surface of the lower pressing head are both provided with magnetic attraction material.

[0030] In a third aspect, the present invention describes a press-fitting method, comprising the following steps:

[0031] S1, positioning the housing on the housing clamping tool;

[0032] S2, installing the upper bearing to be press-fitted on the lower end of the upper press-fitting assembly, and installing the lower bearing to be press-fitted on the upper end of the lower press-fitting assembly;

[0033] S3, adjusting the position of the upper press-fitting assembly at the upper part of the housing along the first direction and the second direction, so that the upper bearing to be press-fitted moves to a theoretical position; adjusting the position of the lower press-fitting assembly at the lower part of the housing along the first direction and the second direction, so that the lower bearing to be press-fitted moves to a theoretical position;

[0034] S4, driving the upper press-fitting assembly and the lower press-fitting assembly to press the upper bearing to be press-fitted and the lower bearing to be press-fitted into the housing;

[0035] S5. Repeat steps S3-S4 to press the remaining bearings into the housing.

[0036] Compared with the prior art, the present invention has the following advantages:

[0037] 1. The shell clamping tool provided by the present invention, through the upper and lower parts of the shell to be pressed are both within the leakage range of the first clamping hole, can cooperate with the pressing equipment to press the upper bearing and the lower bearing of the shell at the same time, without the need to turn the clamping and reposition the press-fitting lower bearing after the upper bearing is pressed, saving time and improving efficiency.

[0038] 2. The bidirectional press-fitting device provided by the present invention can flexibly adjust the bearing press-fitting position by adjusting the positions of the upper press-fitting assembly and the lower press-fitting assembly at the upper and lower parts of the housing, thereby avoiding the risk of dimensional deviation caused by repeated disassembly, positioning and installation of the housing, and improving assembly quality and efficiency. Multiple bearings can be assembled on one set of tooling, reducing the cost of multiple sets of bearing matching tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0040] Figure 1 It is a schematic diagram of the structure of the upper part of the middle housing of the reducer;

[0041] Figure 2 It is a schematic diagram of the structure of the lower part of the middle housing of the reducer;

[0042] Figure 3 It is a structural schematic diagram of the housing clamping tooling according to an embodiment of the present invention;

[0043] Figure 4 It is a structural schematic diagram of a positioning assembly in a housing clamping tool according to an embodiment of the present invention;

[0044] Figure 5 It is a structural schematic diagram of a height adjustment gasket in a housing clamping tool according to an embodiment of the present invention;

[0045] Figure 6 It is a structural schematic diagram of a housing positioned on a housing clamping tool according to an embodiment of the present invention;

[0046] Figure 7 It is a structural schematic diagram of the bidirectional press-fitting device according to an embodiment of the present invention;

[0047] Figure 8 It is a structural schematic diagram of the bidirectional press-fitting device according to an embodiment of the present invention from another angle;

[0048] Fig. 9 A schematic diagram of the connection between the upper press-fitting assembly and the upper substrate in the bidirectional press-fitting device according to an embodiment of the present invention;

[0049] Fig.10 A schematic diagram of the connection between the lower press-fitting assembly and the lower substrate in the bidirectional press-fitting device according to an embodiment of the present invention;

[0050] Fig.11 It is a structural schematic diagram of an upper press-fitting assembly and a lower press-fitting assembly in a bidirectional press-fitting device according to an embodiment of the present invention;

[0051] Fig.12 It is a schematic structural diagram of a remote electronic remote control switch in a bidirectional press-fitting device according to an embodiment of the present invention.

[0052] Wherein: 100-housing; 101-positioning hole; 102-connecting hole; 103-first deep groove ball bearing; 104-second deep groove ball bearing; 105-first cylindrical roller bearing; 106-second cylindrical roller bearing; 107-third cylindrical roller bearing; 108-first connecting sleeve; 109-second connecting sleeve;

[0053] 1-housing clamping tool; 11-supporting column; 12-clamping platform; 121-first clamping hole; 13-positioning assembly; 131-positioning pin; 1311-pin column; 1312-blocking column; 132-positioning pin seat; 1321-first slide slot; 1322-second slide slot; 1323-third slide slot; 14-fastener; 15-height adjustment gasket; 151-second clamping hole; 152-gasket positioning hole; 153-gasket connecting hole; 16-fixed foot seat;

[0054] 2-base; 21-guide column; 22-first connecting pipe; 23-second connecting pipe; 24-third connecting pipe; 25-fourth connecting pipe; 26-remote electronic remote control switch;

[0055] 3-upper press-fit assembly; 31-upper support plate; 32-upper base plate; 321-first upper base plate; 3211-upper base plate slide groove; 322-second upper base plate; 3221-upper base plate slide rail; 3222-first slide rail groove; 3223-second slider; 33-upper ejection mechanism; 331-upper ejection base; 332-upper ejection rod; 34-upper jack; 35-upper pressure head;

[0056] 4-lower press-fit assembly; 41-lower ejection mechanism; 42-lower base plate; 421-first lower base plate; 4211-lower base plate slide groove; 422-second lower base plate; 4221-lower base plate slide rail; 4222-second slide rail groove; 4223-fourth slider; 43-lower jack; 44-lower pressure head. DETAILED DESCRIPTION

[0057] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0058] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two.

[0059] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0060] It should be understood that although the terms first, second, third, etc. may be used to describe in the embodiments of the present application, these descriptions should not be limited to these terms. These terms are only used to distinguish the descriptions. For example, without departing from the scope of the embodiments of the present application, the first may also be referred to as the second, and similarly, the second may also be referred to as the first.

[0061] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0062] It should also be noted that the term "includes", "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, so that a commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the commodity or device including the elements.

[0063] It should be particularly noted that any symbols and / or numbers in the specification that are not marked in the accompanying drawings are not drawing marks.

[0064] Reference Figure 1 , Figure 2 As shown, an upper structure and a lower structure of a central housing of a new energy gearbox. The bearings to be pressed in the upper part include a first deep groove ball bearing 103, a second deep groove ball bearing 104, a first cylindrical roller bearing 105, and a second cylindrical roller bearing 106, and the bearings to be pressed in the lower part include a third cylindrical roller bearing 107, a first connecting sleeve 108, and a second connecting sleeve 109. Among them, the first cylindrical roller bearing 105 in the upper part and the first connecting sleeve 108 in the lower part are coaxial, and the second cylindrical roller bearing 106 in the upper part and the second connecting sleeve 109 in the lower part are coaxial. Both the upper and lower parts of the housing have positioning holes 101 arranged diagonally, and a number of connecting holes 102 are arranged around them.

[0065] Example 1

[0066] See also Figure 3-Figure 6 As shown, a shell clamping tool 1 provided in an embodiment of the present application includes a supporting column 11; a clamping platform 12, which is arranged above the supporting column 11, and a first clamping hole 121 matching the shape of the shell 100 is opened at the center of the clamping platform 12, and the shell 100 is positioned at the center of the clamping platform 12, so that the upper and lower parts of the shell 100 to be pressed are both within the range of the first clamping hole 121; a positioning component 13, the positioning component 13 extends or retracts relative to the clamping platform 12, and the positioning component 13 positions the shell 100 after extending from the clamping platform 12; a fastener 14, which is connected around the shell 100 to fix the shell 100.

[0067] In this embodiment, the support column 11 serves as a bearing and supporting structure of the overall clamping tooling and has sufficient supporting strength. Two support columns 11 are symmetrically arranged, and a fixed foot 16 is arranged at the lower end of each support column 11 to provide more stable support. The support column 11 and the clamping platform 12 form a space for accommodating the lower press-fitting equipment.

[0068] The housing 100 is extended from the clamping platform 12 through the positioning assembly 13 and positioned at the first clamping hole 121. After the press-fitting is completed, the positioning assembly 13 retracts relative to the clamping platform 12, so that the housing 100 can be translated away from the clamping platform 12, providing a basis for the compact layout of the subsequent press-fitting equipment. The fastener 14 can be a bolt, which is connected in the connection hole 102 to fix the housing 100 on the clamping platform 12.

[0069] After the shell 100 is clamped, its upper and lower parts to be pressed are both within the leakage range of the first clamping hole 121. The upper bearing and the lower bearing of the shell 100 can be pressed at the same time with the press-fitting equipment. There is no need to turn the clamp and reposition the lower bearing after press-fitting the upper bearing, which saves time and improves efficiency.

[0070] Furthermore, the positioning assembly 13 includes a positioning pin 131 and a positioning pin seat 132; the positioning pin seat 132 is fixed below the clamping platform 12, and a slide groove is provided on one side of the positioning pin seat 132, and the slide groove includes a first slide groove 1321, a second slide groove 1322 and a third slide groove 1323; the first slide groove 1321 is vertically arranged, the second slide groove 1322 and the third slide groove 1323 are horizontally arranged, and one end of the second slide groove 1322 and one end of the third slide groove 1323 are respectively connected to the first The upper and lower ends of the slide groove 1321 are connected; the positioning pin 131 includes a vertically connected pin column 1311 and a blocking column 1312; the blocking column 1312 slides in the first slide groove 1321, the second slide groove 1322 and the third slide groove 1323; the pin column 1311 is rotatably connected to the first slide groove 1321 through the blocking column 1312, and slides up and down in the first slide groove 1321, and the pin column 1311 slides upward and extends out of the clamping platform 12 to enter the positioning hole 101 of the shell 100.

[0071] In this embodiment, in order to match the positioning hole 101, two positioning assemblies 13 are provided and are arranged diagonally. The blocking column 1312 slides in the first slide groove 1321 to drive the pin 1321 to slide up and down in the first slide groove 1321, and the blocking column 1312 slides in the second slide groove 1322 and the third slide groove 1323 to drive the pin 1321 to rotate in the first slide groove 1321. The pin 1321 slides upward and extends out of the clamping platform 12 and then enters the positioning hole 101 of the housing 100 to position the housing 100. At this time, the blocking column 1312 is located at the connection between the first slide groove 1321 and the second slide groove 1322, so that the blocking column 1312 slides into the second slide groove 1322 to vertically limit the pin 1311. After the press-fitting is completed, the blocking column 1312 slides out of the second slide groove 1322 and enters the first slide groove 1321, and slides downward in the second slide groove 1322 to drive the upper end of the pin 1312 to retract relative to the clamping platform 12, so that the shell 100 can be moved horizontally. At this time, the blocking column 1312 is located at the connection between the first slide groove 1321 and the third slide groove 1323, so that the blocking column 1312 slides into the third slide groove 1323 to vertically limit the pin 1311.

[0072] Furthermore, it also includes a plurality of height adjustment gaskets 15; the height adjustment gasket 15 is arranged between the clamping platform 12 and the shell 100, and a second clamping hole 151 matching the shape of the shell 100 is opened in the center of the height adjustment gasket 15, so that the upper and lower parts of the shell 100 to be pressed are both within the range of the second clamping hole 151.

[0073] The height adjustment gasket 15 is placed under the housing 100 and is used to adjust the height of the housing 100. A gasket positioning hole 152 is set at the corresponding position of the connecting hole 101 for the pin 1321 to pass through; a gasket connecting hole 153 is set at the corresponding position of the fastener 14, and the fastener 14 passes through the connecting hole 102 and the gasket connecting hole 153 in sequence to fix the housing and the height adjustment gasket 15. At the same time, a second clamping hole 151 is set in the center to prevent the upper and lower parts of the housing 100 to be pressed and installed from being blocked.

[0074] Example 2

[0075] See also Figure 7-Figure 12 As shown, this embodiment provides a bidirectional press-fitting device, including a base 2; the shell clamping tool 1 is arranged on the base 2; the upper press-fitting component 3 and the lower press-fitting component 4 are respectively located above and below the first clamping hole 121, and press-fit the upper and lower parts of the shell 100 respectively; the upper press-fitting component 3 and the lower press-fitting component 4 both slide along the first direction and the second direction.

[0076] A space for accommodating the lower press-fitting assembly 4 is formed between the base 2 and the clamping platform 12. During press-fitting, the housing 100 is positioned on the housing clamping fixture 1; the upper bearing to be press-fitted is mounted on the lower end of the upper press-fitting assembly 3, and the lower bearing to be press-fitted is mounted on the upper end of the lower press-fitting assembly 4; the upper press-fitting assembly is adjusted in position on the upper part of the housing 100 by sliding in the first direction (horizontal X direction) and the second direction (horizontal Y direction), so that the upper bearing to be press-fitted is moved to a theoretical position; the position of the lower press-fitting assembly 4 on the lower part of the housing 100 is adjusted along the first direction and the second direction, so that the lower bearing to be press-fitted is moved to a theoretical position; the upper press-fitting assembly 3 and the lower press-fitting assembly 4 are driven to press both the upper bearing to be press-fitted and the lower bearing to be press-fitted into the housing 100; the above steps are repeated to press-fit other bearings. Among them, for the coaxial first cylindrical roller bearing 105 and the first connecting sleeve 108, the second cylindrical roller bearing 106 and the second connecting sleeve 109, the upper press-fitting assembly 3 and the lower press-fitting assembly 4 are moved to be coaxial up and down, so that the upper and lower parts can be press-fitted at the same time, thereby improving the press-fitting efficiency and accuracy.

[0077] The bidirectional press-fitting device described in this embodiment realizes bidirectional press-fitting of the upper and lower parts of the shell by means of the upper press-fitting assembly 3 and the lower press-fitting assembly 4 respectively arranged above and below the shell clamping fixture 1. There is no need to turn the clamping assembly and reposition the lower bearing for press-fitting after the upper bearing is press-fitted, which saves time and improves efficiency. By adjusting the positions of the upper press-fitting assembly 3 and the lower press-fitting assembly 4 at the upper and lower parts of the shell 100, the bearing press-fitting position can be flexibly adjusted, avoiding the risk of dimensional deviation caused by repeated disassembly, positioning and installation of the shell, and improving assembly quality and assembly efficiency. Multiple bearings can be assembled on one set of fixtures, reducing the cost of multiple sets of bearing matching fixtures. The present invention adopts a flexible and replaceable shell clamping fixture 1, which can be designed and matched with different shell clamping fixtures according to the needs of different gearboxes, drive axle shells and bearings, thereby improving the versatility of the press-fitting device and facilitating the assembly of small quantities of multiple varieties of gearboxes and drive axles.

[0078] Furthermore, a guide column 21 is provided on the base 2, an upper support plate 31 is fixed to the upper end of the guide column 21, and an upper base plate 32 is slidably connected in the middle; the upper and lower ends of the upper ejection mechanism 33 are respectively connected to the lower end of the upper support plate 31 and the upper end of the upper base plate 32, and the lower end of the upper ejection mechanism 33 ejects or retracts downward; the upper end of the upper press-fitting assembly 3 is connected to the lower end of the upper base plate 32, and the lower end of the upper press-fitting assembly 3 presses the upper part of the shell 100; a lower ejection mechanism 41 is provided on the base 2, and the upper end of the lower ejection mechanism 41 ejects or retracts upward; the upper end of the lower ejection structure 41 is connected to the lower base plate 42; the lower end of the lower press-fitting assembly 4 is connected to the upper end of the lower base plate 42, and the upper end of the lower press-fitting assembly 4 is press-fitted to the lower part of the shell 100.

[0079] Specifically, the base 2 is a pneumatic power box, which provides power sources for the upper ejection mechanism 33, the upper press-fitting assembly 3, the lower press-fitting assembly 4 and the lower ejection mechanism 41 through the first connecting pipe 22, the second connecting pipe 23, the third connecting pipe 24 and the fourth connecting pipe 25 respectively.

[0080] The upper ejection mechanism 33 includes an upper ejection base 331 and an upper ejection rod 332. The upper ejection rod 332 is connected to the lower end of the upper ejection base 331, and the lower end of the upper ejection rod 332 is connected to the upper end of the upper base plate 32. The upper ejection rod 332 extends or retracts relative to the upper ejection base 331 under the drive of the air source, driving the upper base plate 32 and the upper press-fitting assembly 3 to rise or fall, and increasing the lifting stroke of the upper press-fitting assembly 3 to adapt to the press-fitting of shells of different heights. Similarly, the lower ejection mechanism 41 includes a lower ejection base and a lower ejection rod. The lower ejection rod is connected to the upper end of the lower ejection base, and the upper end of the lower ejection rod is connected to the lower end of the lower base plate 42. The lower ejection rod extends or retracts relative to the lower ejection base under the drive of the air source, driving the lower base plate 42 and the lower press-fitting assembly 4 to rise or fall, and increasing the lifting stroke of the lower ejection mechanism 41.

[0081] Further, refer to Fig. 9 The upper base plate 32 includes a first upper base plate 321 and a second upper base plate 322 perpendicular to each other; an upper base plate slot 3211 extending in the first direction is provided in the middle of the first upper base plate 321, and a first slider sliding in the upper base plate slot 3211 is provided at the upper end of the second upper base plate 322; an upper base plate rail 3221 extending in the second direction is provided at the lower end of the second upper base plate 322, and first rail slots 3222 extending in the second direction are provided on both sides of the upper base plate rail 3221, and a second slider 3223 sliding in the first rail slot 3222 is provided at the upper end of the upper press-fit assembly 3. The upper press-fit assembly 3 can slide in the first direction and the second direction by the above arrangement.

[0082] Reference Fig.10 The lower base plate 42 includes a first lower base plate 421 and a second lower base plate 422 which are perpendicular to each other; a lower base plate slide groove 4211 extending along the first direction is provided in the middle of the first lower base plate 421, and a third slider sliding in the lower base plate slide groove 4211 is provided at the lower end of the second lower base plate 422; a lower base plate slide rail 4221 extending along the second direction is provided at the upper end of the second lower base plate 422, and second slide rail grooves 4222 extending along the second direction are provided on both sides of the lower base plate slide rail 4221, and a fourth slider 4223 sliding in the second slide rail groove 4222 is provided at the lower end of the lower press-fitting assembly 4. The above arrangement enables the lower press-fitting assembly 4 to slide in the first direction and the second direction.

[0083] Further, refer to Fig.11The upper press-fitting assembly 3 includes an upper jack 34 and an upper pressing head 35; the upper end of the upper jack 34 is slidably connected to the lower end of the second upper base plate 322 through a second slider 3223, and the upper pressing head 35 is connected to the top head at the lower end of the upper jack 34 to press-fit the upper part of the housing 100;

[0084] The lower press-fitting assembly 4 includes a lower jack 43 and a lower press head 44; the lower end of the lower jack 43 is slidably connected to the upper end of the second lower base plate 422 through a fourth slider 4223, and the lower press head 44 is connected to the top head of the upper end of the lower jack 43 to press-fit the lower part of the shell 100.

[0085] The upper bearing to be pressed is installed at the lower end of the upper pressure head 35, and the lower bearing to be pressed is installed at the upper end of the lower pressure head 44. The top of the upper jack 34 is driven by the air source to extend downward to drive the upper pressure head 35 to press the upper bearing, and the top of the lower jack 43 is driven by the air source to extend upward to drive the lower pressure head 44 to press the lower bearing. The stroke adjustment height of the upper jack 43 and the lower jack 43 is 60mm, which meets the requirements of conventional transmission bearing assembly. If the stroke is not enough, the lifting stroke can be adjusted by the upper ejection mechanism 33 and the lower ejection mechanism 41.

[0086] In addition, refer to Figure 8 , Fig.12 A remote electronic remote control switch 26 is arranged on the base 2, including 11 buttons, which respectively control the lifting and lowering of the piston rod on the left and right sides, and control the lifting and lowering of the upper ejection mechanism 33, the lower ejection mechanism 41, the upper press-fitting assembly 3 and the lower press-fitting assembly 4 from top to bottom. The double-linked lifting and lowering buttons on the second to last row and the right side are used to simultaneously control the lifting and lowering of the upper press-fitting assembly 3 and the lower press-fitting assembly 4, and are used when there is a need for two-way simultaneous press-fitting; the pause and stop buttons at the bottom are used to control the pause and stop movement of the pneumatic mechanism.

[0087] Furthermore, the pressing surfaces of the upper pressing head 35 and the lower pressing head 44 are both provided with magnetic materials, and the bearing to be press-fitted is installed on the upper pressing head 35 or the lower pressing head 44 by the action of magnetic attraction.

[0088] Example 3

[0089] This embodiment provides a press-fitting method, comprising the following steps:

[0090] S1, positioning the housing 100 on the housing clamping tool 1;

[0091] S2, installing the upper bearing to be press-fitted on the lower end of the upper press-fitting assembly 3, and installing the lower bearing to be press-fitted on the upper end of the lower press-fitting assembly 4;

[0092] S3, adjusting the position of the upper press-fitting assembly 3 on the upper part of the housing 100 along the first direction and the second direction, so that the upper bearing to be press-fitted moves to the theoretical position; adjusting the position of the lower press-fitting assembly 4 on the lower part of the housing 100 along the first direction and the second direction, so that the lower bearing to be press-fitted moves to the theoretical position;

[0093] S4, driving the upper press-fitting assembly 3 and the lower press-fitting assembly 4 to press the upper bearing to be press-fitted and the lower bearing to be press-fitted into the housing 100;

[0094] S5. Repeat steps S3-S4 to press the remaining bearings into the housing 100.

[0095] Specifically, install the shell clamping tool 1 on the base 2 and tighten it with bolts. Note that the installation position of the clamping tool must be arranged and confirmed in advance through three-dimensional data to avoid installation misalignment. Install the height adjustment gasket 15 and the shell parts to be installed on the clamping platform 12. During the installation process, use the positioning component 13 to position and tighten the bolts to fix them. Install the bearing to be pressed on the pressure head of the jack, and fix it with the magnetic material on the back. Use the remote electronic remote control switch 26 to adjust the upper and lower ejection mechanisms so that the height of the upper and lower jacks is within the range of the press-fit stroke. Adjust the upper and lower jacks along the first direction and the second direction to push the bearing to a suitable position close to the shell, check whether there is a problem with the matching of the bearing and the shell. After confirming that there is no problem, continue to press the upper and lower jack movement switches to push the upper bearing or the lower bearing into the shell to complete the press-fit assembly process of the bearing and the shell.

[0096] In the press-fitting method described in this embodiment, the coaxial first cylindrical roller bearing 105 and the first connecting sleeve 108, the second cylindrical roller bearing 106 and the second connecting sleeve 109 are press-fitted twice in an upward and downward manner, the upper first deep groove ball bearing 103 and the second deep groove ball bearing 104 are press-fitted twice independently, and the lower third cylindrical roller bearing 107 is press-fitted once independently, which can complete the press-fitting work of the middle shell and the bearing without disassembling and changing the installation position of the shell in the middle, thereby ensuring the product installation quality, improving the installation efficiency, and saving the tooling cost investment.

[0097] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other. For the system or device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description.

[0098] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A shell clamping tool (1), characterized in that: include: Support column (11); A clamping platform (12) is arranged above the supporting column (11), a first clamping hole (121) matching the shape of the shell (100) is provided at the center of the clamping platform (12), the shell (100) is positioned at the center of the clamping platform (12), and the upper and lower parts of the shell (100) to be pressed are both within the range of the first clamping hole (121); A positioning component (13), the positioning component (13) being extended or retracted relative to the clamping platform (12), and the housing (100) is positioned after the positioning component (13) extends from the clamping platform (12); A fastener (14) is connected around the shell (100) to fix the shell (100).

2. The housing clamping tool (1) according to claim 1, characterized in that: The positioning assembly (13) comprises a positioning pin (131) and a positioning pin seat (132); The positioning pin seat (132) is fixed below the clamping platform (12), and a slide groove is provided on one side of the positioning pin seat (132), and the slide groove includes a first slide groove (1321), a second slide groove (1322) and a third slide groove (1323); the first slide groove (1321) is vertically arranged, the second slide groove (1322) and the third slide groove (1323) are horizontally arranged, and one end of the second slide groove (1322) and one end of the third slide groove (1323) are respectively connected to the upper and lower ends of the first slide groove (1321); The positioning pin (131) includes a pin column (1311) and a stop column (1312) which are vertically connected; the stop column (1312) slides in the first slide groove (1321), the second slide groove (1322) and the third slide groove (1323); the pin column (1311) is rotatably connected to the first slide groove (1321) through the stop column (1312), and slides up and down in the first slide groove (1321), and the pin column (1311) slides upward and extends out of the clamping platform (12) to enter the positioning hole (101) of the shell (100).

3. The housing clamping tool (1) according to claim 1, characterized in that: Also includes a plurality of height adjustment pads (15); The height adjustment gasket (15) is arranged between the clamping platform (12) and the shell (100), and a second clamping hole (151) matching the shape of the shell (100) is provided at the center of the height adjustment gasket (15), so that the upper and lower parts of the shell (100) to be pressed are both within the range of the second clamping hole (151).

4. A bidirectional press-fitting device, characterized in that: include: Base (2); The shell clamping tool (1) according to any one of claims 1 to 3, arranged on the base (2); The upper press-fitting assembly (3) and the lower press-fitting assembly (4) are respectively located above and below the first clamping hole (121), and press-fit the upper and lower parts of the shell (100) respectively; the upper press-fitting assembly (3) and the lower press-fitting assembly (4) both slide in the first direction and the second direction.

5. The bidirectional press-fitting device according to claim 4, characterized in that: A guide column (21) is provided on the base (2); an upper support plate (31) is fixed to the upper end of the guide column (21), and an upper base plate (32) is slidably connected to the middle; upper and lower ends of an upper ejection mechanism (33) are respectively connected to the lower end of the upper support plate (31) and the upper end of the upper base plate (32), and the lower end of the upper ejection mechanism (33) ejects downward or retracts; the upper end of the upper press-fitting assembly (3) is connected to the lower end of the upper base plate (32), and the lower end of the upper press-fitting assembly (3) presses the upper part of the shell (100); A lower ejection mechanism (41) is arranged on the base (2), and the upper end of the lower ejection mechanism (41) ejects upward or retracts; the upper end of the lower ejection structure (41) is connected to a lower base plate (42); the lower end of the lower press-fitting assembly (4) is connected to the upper end of the lower base plate (42), and the upper end of the lower press-fitting assembly (4) presses the lower part of the shell (100).

6. The bidirectional press-fitting device according to claim 5, characterized in that: The upper substrate (32) comprises a first upper substrate (321) and a second upper substrate (322) which are perpendicular to each other; An upper substrate sliding groove (3211) extending along the first direction is provided in the middle of the first upper substrate (321), and a first sliding block sliding in the upper substrate sliding groove (3211) is provided at the upper end of the second upper substrate (322); An upper substrate slide rail (3221) extending along the second direction is arranged at the lower end of the second upper substrate (322), first slide rail grooves (3222) extending along the second direction are arranged on both sides of the upper substrate slide rail (3221), and a second sliding block (3223) sliding in the first slide rail groove (3222) is arranged at the upper end of the upper press-fitting assembly (3).

7. The bidirectional press-fitting device according to claim 6, characterized in that: The lower substrate (42) comprises a first lower substrate (421) and a second lower substrate (422) which are perpendicular to each other; A lower substrate sliding groove (4211) extending along the first direction is provided in the middle of the first lower substrate (421), and a third sliding block sliding in the lower substrate sliding groove (4211) is provided at the lower end of the second lower substrate (422); A lower substrate slide rail (4221) extending along the second direction is arranged at the upper end of the second lower substrate (422), second slide rail grooves (4222) extending along the second direction are arranged on both sides of the lower substrate slide rail (4221), and a fourth sliding block (4223) sliding in the second slide rail groove (4222) is arranged at the lower end of the lower press-fitting assembly (4).

8. The bidirectional press-fitting device according to claim 7, characterized in that: The upper press-fitting assembly (3) comprises an upper jack (34) and an upper press head (35); the upper end of the upper jack (34) is slidably connected to the lower end of the second upper base plate (322) via the second slider (3223), and the upper press head (35) is connected to the top head at the lower end of the upper jack (34) to press-fit the upper part of the shell (100); The lower press-fitting assembly (4) comprises a lower jack (43) and a lower press head (44); the lower end of the lower jack (43) is slidably connected to the upper end of the second lower base plate (422) via the fourth slider (4223), and the lower press head (44) is connected to the top head at the upper end of the lower jack (43) to press-fit the lower part of the shell (100).

9. The bidirectional press-fitting device according to claim 8, characterized in that: The pressing surface of the upper pressing head (35) and the pressing surface of the lower pressing head (44) are both provided with magnetic attraction materials.

10. A press-fitting method using the bidirectional press-fitting device according to any one of claims 4 to 9, characterized in that: The steps include: S1, positioning the housing (100) on the housing clamping tool (1); S2, installing the upper bearing to be press-fitted on the lower end of the upper press-fitting assembly (3), and installing the lower bearing to be press-fitted on the upper end of the lower press-fitting assembly (4); S3, adjusting the position of the upper press-fitting assembly (3) at the upper part of the housing (100) along the first direction and the second direction, so that the upper bearing to be press-fitted moves to a theoretical position; adjusting the position of the lower press-fitting assembly (4) at the lower part of the housing (100) along the first direction and the second direction, so that the lower bearing to be press-fitted moves to a theoretical position; S4, driving the upper press-fitting assembly (3) and the lower press-fitting assembly (4) to press the upper bearing to be press-fitted and the lower bearing to be press-fitted into the housing (100); S5. Repeat steps S3-S4 to press the remaining bearings into the housing (100).

Images