Auxiliary tooling

Abstract

The present invention discloses an auxiliary tooling, in which an annular installation groove is provided between the side wall surface of the positioning column and the inner wall surface of the positioning hole, and the width of the annular installation groove is gradually increased from the bottom of the groove to the groove opening. The auxiliary tooling includes an auxiliary ring sleeved on the crankshaft, and the auxiliary ring is provided with a support platform along its circumferential extension. The support platform is clamped in the annular installation groove, and the side wall surface of the support platform abuts against the side wall surface of the positioning column, so that the positioning column abuts against the inner wall surface of the positioning hole and the side wall surface of the support platform respectively, and the installation matching length of the positioning column is increased, so that when the positioning column is inserted into the positioning hole, the installation is stable, the coaxial accuracy is guaranteed, and the effect is good. The auxiliary installation of the auxiliary tooling can effectively guarantee the coaxial accuracy of the installation without redeveloping the crankshaft or the hydraulic torque converter, saving the cost of redeveloping the crankshaft or the hydraulic torque converter, and can effectively improve the success rate of the installation of the crankshaft and the hydraulic torque converter, and reduce the risk of line stoppage caused by assembly quality of the powertrain assembly line.

Description

Technical Field

[0001] The invention relates to the technical field of assembly of an internal combustion engine crankshaft and a hydraulic torque converter, in particular to an auxiliary tooling. Background Art

[0002] The existing crankshaft and torque converter are platform parts, which have insufficient axial matching length. As a result, the coaxial matching accuracy of the crankshaft and the torque converter positioning column cannot be guaranteed, and the cost of redeveloping the crankshaft or torque converter is high. Therefore, the present application provides an auxiliary tooling to solve the coaxial matching accuracy of the crankshaft and the torque converter before tightening the torque converter bolts while saving costs. Summary of the invention

[0003] The main purpose of the present invention is to provide an auxiliary tooling, aiming to solve the coaxial matching accuracy of the crankshaft and the hydraulic torque converter before the hydraulic torque converter bolts are tightened under the premise of saving costs.

[0004] To achieve the above-mentioned purpose, the auxiliary tooling proposed in the present invention is used for assisting the installation of a torque converter and a crankshaft, the crankshaft is provided with a positioning hole, the torque converter has a positioning column, the positioning column is inserted into the positioning hole, so that an annular mounting groove is provided between the side wall surface of the positioning column and the inner wall surface of the positioning hole, the width of the annular mounting groove is gradually increased from the bottom of the groove to the groove mouth, the auxiliary tooling includes an auxiliary ring, the auxiliary ring is sleeved on the crankshaft, the auxiliary ring is provided with a support platform along its circumferential extension, the support platform is used to be clamped in the annular mounting groove, and the side wall surface of the support platform is used to abut against the side wall surface of the positioning column.

[0005] Optionally, a guiding slope is provided on one end of the inner wall surface of the positioning hole close to the torque converter;

[0006] The support platform is provided with a matching inclined surface for matching with the guiding inclined surface.

[0007] Optionally, the auxiliary tooling further includes a mounting seat, and the mounting seat is used to support the torque converter and the crankshaft;

[0008] The auxiliary ring is movably mounted on the mounting seat along its axial direction, so that the auxiliary ring can move to a working position where the support platform is clamped in the annular mounting groove and a separation position where the auxiliary ring is detached from the annular mounting groove;

[0009] The auxiliary tooling also includes a first driving component, which is installed on the mounting seat to drive the auxiliary ring to move.

[0010] Optionally, the auxiliary ring includes two auxiliary blocks, the two auxiliary blocks are arranged in an arc shape, and the ends of the two auxiliary blocks are buckled to enclose and form a ring structure.

[0011] Optionally, the two auxiliary blocks are configured as two magnets that are magnetically attracted to each other; and / or,

[0012] A gripping rod is extended from one side of the two auxiliary blocks which are away from each other, and a free end of the gripping rod is used for being gripped by an operator.

[0013] Optionally, the holding rod is configured as a telescopic rod.

[0014] Optionally, the auxiliary tooling further includes a second drive assembly, the second drive assembly includes two drive parts, the two drive parts have an active stroke approaching or moving away from each other along the diameter direction of the auxiliary ring, wherein the two drive parts are respectively connected to the two auxiliary blocks.

[0015] Optionally, the second driving assembly further comprises two cylinders, the two cylinders are arranged at intervals along the diameter direction of the auxiliary ring, and the piston rods of the two cylinders are arranged opposite to each other and have a movable stroke along the diameter direction of the auxiliary ring;

[0016] The driving part includes a piston rod of the cylinder.

[0017] Optionally, a boss is provided on the end surface of the crankshaft facing the torque converter, and the boss is extended along the circumference of the positioning hole;

[0018] The auxiliary ring is provided with a slot on the side facing the crankshaft, and the slot is used for the boss to be clamped.

[0019] Optionally, the width of the card slot is gradually increased from the slot bottom to the slot opening; and / or,

[0020] The inner wall surface of the slot is used for magnetically engaging with the boss.

[0021] In the above-mentioned auxiliary tooling, since an annular installation groove is provided between the side wall surface of the positioning column and the inner wall surface of the positioning hole, the width of the annular installation groove is gradually increased from the bottom of the groove to the groove mouth, and the auxiliary ring is sleeved on the crankshaft, and the auxiliary ring is provided with a support platform along its circumferential extension, and the support platform is clamped in the annular installation groove, and since the side wall surface of the support platform abuts against the side wall surface of the positioning column, the positioning column abuts against the inner wall surface of the positioning hole and the side wall surface of the support platform respectively, thereby increasing the installation matching length of the positioning column, so that the positioning column is stably installed when inserted into the positioning hole, ensuring the coaxial accuracy, and having a good effect. Through the auxiliary installation of the auxiliary tooling, the coaxial accuracy of the installation can be effectively guaranteed without redeveloping the crankshaft or torque converter, thereby saving the cost of redeveloping the crankshaft or torque converter, effectively improving the success rate of the installation of the crankshaft and torque converter, and reducing the risk of line stoppage due to assembly quality of the powertrain assembly line. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0023] Figure 1 A schematic structural diagram of an embodiment of the auxiliary tooling provided by the present invention;

[0024] Figure 2 for Figure 1 Schematic diagram of the structure of the auxiliary tooling and the auxiliary installation of the crankshaft and torque converter;

[0025] Figure 3 for Figure 2 (One angle) structural diagram;

[0026] Figure 4 for Figure 2 (Structural diagram from another angle);

[0027] Figure 5 A schematic structural diagram of another embodiment of the auxiliary tooling provided by the present invention;

[0028] Figure 6 for Figure 1 The structural diagram of the auxiliary block (one angle);

[0029] Figure 7 for Figure 1 Schematic diagram of the structure of the auxiliary block (another angle).

[0030] Description of Figure Numbers:

[0031]

[0032]

[0033] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0037] The existing crankshaft and torque converter are platform parts, which have insufficient axial matching length. As a result, the coaxial matching accuracy of the crankshaft and the torque converter positioning column cannot be guaranteed, and the cost of redeveloping the crankshaft or torque converter is high. Therefore, the present application provides an auxiliary tooling to solve the coaxial matching accuracy of the crankshaft and the torque converter before tightening the torque converter bolts while saving costs.

[0038] The present invention provides an auxiliary tool, wherein: Figures 1 to 7A schematic structural diagram of an embodiment of the auxiliary tooling provided by the present invention.

[0039] See also Figures 1 to 3 The auxiliary tooling 100 is used for assisting the installation of the torque converter 200 and the crankshaft 300. The crankshaft 300 is provided with a positioning hole 301. The torque converter 200 has a positioning column 201. The positioning column 201 is inserted into the positioning hole 301 so that an annular mounting groove a is provided between the side wall surface of the positioning column 201 and the inner wall surface of the positioning hole 301. The width of the annular mounting groove a is gradually increased from the bottom of the groove to the groove mouth. The auxiliary tooling 100 includes an auxiliary ring 1. The auxiliary ring 1 is sleeved on the crankshaft 300. The auxiliary ring 1 is provided with a support platform 11 extending along its circumferential direction. The support platform 11 is used to be clamped in the annular mounting groove a. The side wall surface of the support platform 11 is used to abut against the side wall surface of the positioning column 201.

[0040] In the above-mentioned auxiliary tooling 100, since an annular mounting groove a is provided between the side wall surface of the positioning column 201 and the inner wall surface of the positioning hole 301, the width of the annular mounting groove a is gradually increased from the bottom of the groove to the groove mouth, and the auxiliary ring 1 is sleeved on the crankshaft 300. The auxiliary ring 1 is provided with a support platform 11 extending along its circumferential direction, and the support platform 11 is clamped in the annular mounting groove a. Since the side wall surface of the support platform 11 abuts against the side wall surface of the positioning column 201, the positioning column 201 abuts against the inner wall surface of the positioning hole 301 and the side wall surface of the support platform 11 respectively, thereby increasing the installation matching length of the positioning column 201, so that when the positioning column 201 is inserted into the positioning hole 301, the installation is stable, the coaxial accuracy is guaranteed, and the effect is good. Through the auxiliary installation of the auxiliary tooling 100, the coaxial accuracy of the installation can be effectively guaranteed without redeveloping the crankshaft 300 or the torque converter 200, thereby saving the cost of redeveloping the crankshaft 300 or the torque converter 200, effectively improving the success rate of the installation of the crankshaft 300 and the torque converter 200, and reducing the risk of line stoppage due to assembly quality of the powertrain assembly line.

[0041] Specifically, refer to Figure 4 The inner wall surface of the positioning hole 301 is provided with a guiding bevel b near one end of the torque converter 200. This arrangement facilitates the insertion of the positioning column 201 into the positioning hole 301. By providing the support platform 11 with a matching bevel c that is adapted to the guiding bevel b, this arrangement makes it easy to operate when the support platform 11 is clamped in the annular mounting groove a, and makes the support platform 11 fit more closely with one end of the torque converter 200, thereby improving the assembly accuracy.

[0042] Specifically, refer to Figure 5 When the support platform 11 is installed in the annular mounting groove a, it can be driven manually or mechanically. Specifically, in one embodiment of the present application, the auxiliary tooling 100 also includes a mounting seat 4, and the mounting seat 4 is used to support the torque converter 200 and the crankshaft 300. The auxiliary ring 1 is movably installed on the mounting seat 4 along its axial direction, so that the auxiliary ring 1 has a working position in which the support platform 11 is clamped in the annular mounting groove a and a separation position in which the support platform 11 is detached from the annular mounting groove a. The auxiliary tooling 100 also includes a first driving component, which is installed on the mounting seat 4. The auxiliary ring 1 is driven to move by the first driving component, so that the support platform 11 can be automatically clamped in the annular mounting groove a or detached from the annular mounting groove a. The structure is simple and easy to operate.

[0043] It should be noted that, in other embodiments, the first drive component may also include a cylinder, a linear motor, an electric push rod, a gear rack, etc. Since driving by a cylinder, a linear motor, an electric push rod, a gear rack, etc. belongs to the prior art, the present application will not go into details.

[0044] In order to facilitate the removal of the auxiliary ring 1 and the auxiliary ring 1 after the torque converter 200 and the crankshaft 300 are installed, refer to Figure 1 The auxiliary ring 1 includes two auxiliary blocks 1a, which are arranged in an arc shape. The ends of the two auxiliary blocks 1a are interlocked to form an annular structure. With such an arrangement, when auxiliary installation is required, the two auxiliary blocks 1a are separated so that the two auxiliary blocks 1a are respectively located on both sides of the crankshaft 300, and then the ends of the two auxiliary blocks 1a are interlocked to form an annular structure. Then, the annular structure is mounted on the crankshaft 300 so that the support platform 11 is clamped in the annular mounting groove a for auxiliary installation. After the installation of the crankshaft 300 and the torque converter 200 is completed, the two interlocked auxiliary blocks 1a are separated and move in directions away from each other, thereby realizing the separation of the auxiliary ring 1. The structure is simple and easy to operate.

[0045] It should be noted that the direction in which the two engaged auxiliary blocks 1a move away from each other may be along the longitudinal direction or along the axial direction. Specifically, the present application does not limit this.

[0046] Specifically, in order to facilitate the buckling of the two auxiliary blocks 1a, the two auxiliary blocks 1a are set as two magnets that are magnetically attracted to each other. With this arrangement, when the two auxiliary blocks 1a are close to each other, the two auxiliary blocks 1a will automatically align and buckle under the action of their own magnetic attraction, so that the buckling of the two auxiliary blocks 1a can be achieved in a small space, and the operation is simple. When it is necessary to separate the two auxiliary blocks 1a, it is only necessary to apply external force in the direction away from each other to separate the two auxiliary blocks 1a, and the operation is simple.

[0047] Specifically, the two auxiliary blocks 1a can be driven to engage with each other by human power or mechanical drive. Specifically, refer to Figures 1 to 3 In one embodiment of the present application, a holding rod 2 is extended from one side of the two auxiliary blocks 1a, and the free end of the holding rod 2 is used for the operator to hold. In this way, the operator holds the free end of the holding rod 2 to make the two auxiliary blocks 1a approach each other to fit together or make the two auxiliary blocks 1a move away from each other and separate. The operation is simple, so that the auxiliary tooling 100 has a simple structure, requires a small operating space during auxiliary installation, and saves costs.

[0048] It should be noted that the feature that the two auxiliary blocks 1a are configured as two magnets that are magnetically attracted to each other and the feature that a gripping rod 2 is extended from one side of the two auxiliary blocks 1a away from each other can be set either one or both. When both are set at the same time, the effect is best.

[0049] Considering that there are limitations on the installation space when performing auxiliary installation, the holding rod 2 is configured as a telescopic rod, and the length of the holding rod 2 can be adjusted according to the size of the installation space, thereby improving the versatility and applicability of the auxiliary tooling 100, having good effects and improving the user experience.

[0050] Specifically, the two auxiliary blocks 1a can be driven to engage with each other by human power or mechanical drive. Specifically, in one embodiment of the present application, refer to Figure 4 The auxiliary tooling 100 also includes a second driving assembly, which includes two driving parts 51. The two driving parts 51 have a movable stroke along the diameter direction of the auxiliary ring 1 that approaches or moves away from each other, wherein the two driving parts 51 are respectively connected to the two auxiliary blocks 1a. With such an arrangement, when the two driving parts 51 move, the two auxiliary blocks 1a will move with the driving parts 51, thereby realizing automation, simple operation, and improving the accuracy of auxiliary installation.

[0051] Furthermore, the second driving assembly also includes two cylinders 52, and the two cylinders 52 are spaced apart along the diameter direction of the auxiliary ring. The piston rods of the two cylinders 52 are relatively arranged and have an active stroke along the diameter direction of the auxiliary ring 1. The driving part 51 includes the piston rod of the cylinder 52. With such an arrangement, when the piston rod of the cylinder 52 moves, it will drive the auxiliary block 1a to move. The structure is simple, easy to operate, and automation is realized.

[0052] It should be noted that, in other embodiments, the second drive assembly may also include a linear motor, an electric push rod, a gear rack, etc. Specifically, the present application does not limit this.

[0053] Reference Figure 1 , Figure 4 , Figure 6 and Figure 7 The crankshaft 300 has an end surface facing the torque converter 200 with a boss 202, and the boss 202 is circumferentially extended along the positioning hole 301. The auxiliary ring 1 has a slot 12 on the side facing the crankshaft 300, and the slot 12 is used for the boss 202 to be clamped. With this arrangement, the auxiliary ring 1 is limited in its radial direction through the coordinated installation of the slot 12 and the boss 202, so as to avoid the auxiliary ring 1 from moving in the radial direction during the auxiliary installation, thereby affecting the effect of the auxiliary installation.

[0054] In order to increase the contact area between the auxiliary ring 1 and the crankshaft 300, the side surface of the auxiliary ring 1 facing the crankshaft 300 abuts against the end surface of the crankshaft 300, thereby increasing the contact area, making the structure of the auxiliary ring 1 stable and improving the auxiliary installation effect.

[0055] Specifically, refer to Figure 4 , Figure 6 and Figure 7 The width of the slot 12 is gradually increased from the bottom of the slot to the slot mouth. This arrangement makes it easy for the boss 202 to be installed in the slot 12, and the structure is simple and easy to process.

[0056] In order to ensure a secure installation between the card slot 12 and the boss 202, the inner wall surface of the card slot 12 is magnetically matched with the boss 202, so that the boss 202 can be installed in the card slot 12. Under the action of the magnetic force, the card slot 12 and the boss 202 are securely installed, and the effect is good.

[0057] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An auxiliary tooling for assisting the installation of a torque converter and a crankshaft, wherein the crankshaft is provided with a positioning hole, and the torque converter has a positioning column, and the positioning column is inserted into the positioning hole, so that an annular mounting groove is provided between the side wall surface of the positioning column and the inner wall surface of the positioning hole, and the width of the annular mounting groove is gradually increased from the groove bottom to the groove mouth, characterized in that: The auxiliary tooling includes an auxiliary ring, which is sleeved on the crankshaft. The auxiliary ring is provided with a support platform extending along its circumference. The support platform is used to be clamped in the annular mounting groove, and the side wall surface of the support platform is used to abut against the side wall surface of the positioning column.

2. The auxiliary tooling according to claim 1, characterized in that: A guiding slope is provided on one end of the inner wall surface of the positioning hole close to the torque converter; The support platform is provided with a matching inclined surface for matching with the guiding inclined surface.

3. The auxiliary tooling according to claim 1, characterized in that: The auxiliary tooling also includes a mounting seat, and the mounting seat is used to support the torque converter and the crankshaft; The auxiliary ring is movably mounted on the mounting seat along its axial direction, so that the auxiliary ring can move to a working position where the support platform is clamped in the annular mounting groove and a separation position where the auxiliary ring is detached from the annular mounting groove; The auxiliary tooling also includes a first driving component, which is installed on the mounting seat to drive the auxiliary ring to move.

4. The auxiliary tooling according to claim 1, characterized in that: The auxiliary ring includes two auxiliary blocks, the two auxiliary blocks are arranged in an arc shape, and the ends of the two auxiliary blocks are buckled to enclose and form a ring structure.

5. The auxiliary tooling as claimed in claim 4, characterized in that: The two auxiliary blocks are configured as two magnets that are magnetically attracted to each other; and / or, A gripping rod is extended from one side of the two auxiliary blocks which are away from each other, and a free end of the gripping rod is used for being gripped by an operator.

6. The auxiliary tooling as claimed in claim 5, characterized in that: The holding rod is configured as a telescopic rod.

7. The auxiliary tooling according to claim 4, characterized in that: The auxiliary tooling also includes a second drive assembly, which includes two drive parts. The two drive parts have a movable stroke along the diameter direction of the auxiliary ring to approach or move away from each other, wherein the two drive parts are respectively connected to the two auxiliary blocks.

8. The auxiliary tooling according to claim 7, characterized in that: The second driving assembly further comprises two cylinders, the two cylinders are spaced apart along the diameter direction of the auxiliary ring, the piston rods of the two cylinders are arranged opposite to each other and have a movable stroke along the diameter direction of the auxiliary ring; The driving part includes a piston rod of the cylinder.

9. The auxiliary tooling according to claim 1, characterized in that: The end surface of the crankshaft facing the torque converter is provided with a boss, and the boss is extended along the circumference of the positioning hole; The auxiliary ring is provided with a slot on the side facing the crankshaft, and the slot is used for the boss to be clamped.

10. The auxiliary tooling according to claim 9, characterized in that: The width of the card slot is gradually increased from the slot bottom to the slot opening; and / or, The inner wall surface of the slot is used for magnetically engaging with the boss.

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