Tool for shaping commercial vehicle gearbox relay and use method

Abstract

The invention discloses a tool for shaping a commercial vehicle gearbox relay and a using method, and belongs to the technical field of gearbox relays. An assembled relay is placed on a spring in a relay positioning groove, a quick pressing clamp handle is pushed forwards, the pushing plate is driven to move forwards under the guidance of guide walls on the two sides of the sliding platform through the jacking of the quick pressing clamp, and two spring ejector pins make contact with a relay coil till the pushing plate makes contact with two positioning columns. Under the acting force of the spring and the two spring ejector pins, the magnetic core and the coil are accurately combined together, and at the moment, the relay 6 is stabilized in the relay positioning groove; putting the tool on which the relay is fixed into a baking oven for baking; the tool is taken out of the drying oven, the handle of the quick pressing clamp is pushed backwards, the pushing plate is driven to move backwards through the jacking of the quick pressing clamp, the relay is separated from the two spring ejector pins and the two positioning columns, the relay is pushed into the empty area through the spring, and the shaped relay is taken out. And the assembly size precision of the relay is improved to 19.5 mm + / -0.1 mm.

Description

Technical Field

[0001] The invention relates to a tool for shaping a commercial vehicle gearbox relay and a use method thereof, belonging to the technical field of gearbox relays. Background Art

[0002] With the development of the industry, the requirements for the sensitivity, long life, and fast switching of automotive relays are getting higher and higher. New requirements are also put forward for the dimensional accuracy of commercial vehicle gearbox relays. The size of new relays is as follows: Fig. 9 As shown: The required combined tolerance of the core and the coil is: 19.5±0.1mm.

[0003] In the prior art relay, the actual assembly is just to put the wire package onto the magnetic core, and then put it into the oven after the wire package is fixed by its own gravity. The tolerance of the relay after assembly can only be controlled within ±0.5mm; (the wire package tolerance is ±0.3mm, and the magnetic core tolerance is ±0.2mm).

[0004] In order to make the dimensional accuracy of relays meet the new industry requirements, component suppliers are generally required to strictly control dimensional tolerances (injection molding skeleton, wire package). However, blindly increasing the processing accuracy of components will lead to excessive costs. For example, the processing accuracy of injection molding products is limited, and there are multiple bottlenecks such as high cost and high defective rate. Summary of the invention

[0005] In view of the fact that the combined tolerance of the magnetic core and the wire package in the prior art cannot meet the requirement of ±0.1mm, and the problems of high cost and great limitations, the present invention provides a tool and a method for using it for finalizing a commercial vehicle gearbox relay. The tool improves the dimensional accuracy of the relay (magnetic core + wire package combination) from ±0.5mm to ±0.1mm.

[0006] The technical solution adopted by the present invention is: a tool for finalizing the transmission relay of a commercial vehicle, comprising a quick pressing clamp, a base plate, a push plate, a spring ejector pin, and a spring; the quick pressing clamp is fixed on a table surface within two guide walls of a sliding platform of the base plate, the push plate is arranged on the table surface within the two guide walls, two spring ejectors are fixed in front of the push plate, and the rear of the push plate is fixed to the quick pressing clamp, one end of the spring is fixed to a bottom plate of the base plate, and the other end of the spring and a relay positioning groove and two positioning columns on the bottom plate correspond to the push plate respectively; the bottom surface of the push plate is in contact with the table surface, and the two side surfaces of the push plate are in gap with the two guide walls, so that the push plate can move forward and backward on the sliding platform.

[0007] A method for using a tool for finalizing a commercial vehicle gearbox relay, comprising the steps of: 1. placing an assembled relay on a spring in a relay positioning groove, pushing a quick pressing clamp handle forward, and the quick pressing clamp pushing and driving a push plate to move forward under the guidance of guide walls on both sides of a sliding platform, so that two spring ejectors contact with a relay coil, until the push plate contacts with two positioning columns, and under the action of the spring and the two spring ejectors, a magnetic core and a coil are closely fitted together, and at this time, the relay 6 is firmly fixed in the relay positioning groove; Step 2: Put the tooling with the relay fixed in it into an oven for baking, and dry the core and the wire package with the drying glue to fix them; Step 3, take out the tooling from the oven, push the handle of the quick pressing pliers backward, the quick pressing pliers push the push plate backward, the relay is separated from the two spring ejectors and the two positioning columns, the spring pushes the relay into the empty area, and the finalized relay is taken out. The technical effect produced by the present invention is: the relay assembly method of the prior art, the skeleton and the magnetic core are directly assembled, and the limit point glue is not used for direct drying and finalization. The assembly size accuracy of the relay can only be controlled within ±0.5mm. The present tooling is used to improve the assembly size accuracy of the relay from: ±0.5mm to ±0.1mm. After using the invented tooling, the first-time qualified rate of the product is increased from 68% of the prior art to 99.6%. After using the present tooling, the sensitivity, rapid conversion and life of the relay will be improved because the accuracy of ±0.1mm is guaranteed, so that the sensitivity, long life, rapid conversion and other characteristics of the relay are more guaranteed, and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural schematic diagram of the fixture of the present invention; Figure 2 It is a schematic diagram of the structural decomposition of the fixture of the present invention; Figure 3 is a top view of the substrate of the present invention; Figure 4 for Figure 3 AA section view of the structure; Figure 5 It is a schematic diagram of the structure of the push plate fixed with a spring ejector pin according to the present invention; Figure 6 It is a schematic structural diagram of the spring ejector of the present invention; Figure 7 It is a schematic diagram of the structure of an embodiment of the present invention; Figure 8 It is the structural diagram of the relay; Fig. 9 This is a schematic diagram of the tolerance requirements of the relay after assembly.

[0009] In the figure: 1, substrate; 1-1, bottom plate; 1-1-1, relay positioning groove; 1-1-2, spring groove; 1-2, positioning column; 1-3, sliding platform; 1-3-1, guide wall; 2, push plate; 2-1, blind hole with thread; 3, quick pressing pliers; 3-1, handle; 3-2, support; 3-2-1, locking nut; 4, spring ejector; 5, spring; 6, relay; 6-1, wire package; 6-2, magnetic core. DETAILED DESCRIPTION

[0010] like Figure 1 As shown, a tool for shaping a commercial vehicle transmission relay includes a quick pressing clamp 3, a base plate 1, a push plate 2, a spring ejector pin 4, and a spring 5.

[0011] like Figures 2 to 6 As shown, the substrate 1 is L-shaped, and is composed of a bottom plate 1-1, a positioning column 1-2 and a sliding platform 1-3 of an integral structure. One end of the substrate 1 is the bottom plate 1-1, and the other end of the substrate 1 is the sliding platform 1-3. A rectangular relay positioning groove 1-1-1 is opened on the surface of the bottom plate 1-1, and a spring groove 1-1-2 is opened at the center position of the relay positioning groove 1-1-1. A positioning column 1-2 is respectively provided on both sides of the relay positioning groove 1-1-1, and guide walls 1-3-1 are provided on both sides of the sliding platform 1-3.

[0012] The push plate 2 is a rectangular plate, and one side of the push plate 2 is provided with a blind hole 2-1 with a thread.

[0013] Fix the quick pressing clamp 3 on the table surface inside the two guide walls 1-3-1 of the sliding platform 1-3 of the base plate 1 by bolts, set the push plate 2 on the table surface inside the two guide walls 1-3-1, screw the top 3-2 of the quick pressing clamp 3 to the blind hole 2-1 with thread of the push plate 2, tighten the locking nut 3-2-1 on the top 3-2, fix the push plate 2 on the top 3-2, and fix two spring ejectors 4 in front of the push plate 2 by glue; One end of the spring 5 is fixed in the spring slot 1-1-2 of the bottom plate 1-1 of the base plate 1, and the other end of the spring 5, the relay positioning slot 1-1-1 and the two positioning posts 1-2 on the bottom plate 1-1 correspond to the push plate 2 respectively; The bottom surface of the push plate 2 is in contact with the table surface, and the two side surfaces of the push plate 2 are in clearance with the two guide walls 1-3-1, so that the push plate 2 can move forward and backward on the sliding platform 1-3.

[0014] The distance between the centers of the two spring ejector pins 4 is 15 mm, and the tolerance is ±0.05 mm.

[0015] Embodiment 1, as Figure 7 , Figure 8As shown, a method for using a tool for finalizing a commercial vehicle transmission relay, step 1, relay assembly: applying curing glue to the magnetic core 6-2, and then inserting the wire package 6-1 into the magnetic core 6-2 to assemble the relay 6 into a finished product; Step 2, put the assembled relay 6 into the empty area formed between the push plate 2 and the two positioning columns 1-2, place the auxiliary relay 6 in the relay positioning groove 1-1-1 with the left hand, and the magnetic core 6-2 of the relay 6 compresses the spring 5. Push the handle 3-1 of the quick pressing clamp 3 forward with the right hand, and the support 3-2 of the quick pressing clamp 3 drives the push plate 2 to move forward under the guidance of the guide walls 1-3-1 on both sides of the sliding platform 1-3, so that the two spring ejectors 4 on the push plate 2 are in contact with the relay 6 wire package 6-1, until the push plate 2 is in contact with the two positioning columns 1-2, and under the action of the spring 5 and the two spring ejectors 4, the magnetic core 6-2 and the wire package 6-1 are accurately combined together, and the relay 6 is now firmly fixed in the relay positioning groove 1-1-1; Step 3: Place the tooling in a 120±10 degree Celsius oven and bake for 120 minutes. The core and the wire package are dried and shaped by drying glue. Step 4, take out the tooling from the oven, cool it at room temperature for 30 minutes, push the handle 3-1 of the quick pressing clamp 3 backwards, the support 3-2 of the quick pressing clamp 3 drives the push plate 2 to move backwards, the relay 6 is separated from the two spring ejectors 4 and the two positioning columns 1-2, the spring 5 pushes the relay 6 into the empty area between the push plate 2 and the two positioning columns 1-2, and the finalized relay 6 is taken out.

[0016] The two positioning columns 1 - 2 are processed by precision milling, and the height of the positioning columns 1 - 2 is 19.5 mm. The tolerance is controlled within the range of ±0.05 mm, ensuring that the relay 6 meets the accuracy requirement of 19.5±0.1 mm tolerance.

Claims

1. A tool for shaping a commercial vehicle transmission relay, comprising a quick pressing clamp (3), characterized in that: It also includes a base plate (1), a push plate (2), a spring ejector pin (4), and a spring (5); the quick pressing clamp (3) is fixed on a table surface inside two guide walls (1-3-1) of a sliding platform (1-3) of the base plate (1); the push plate (2) is arranged on the table surface inside the two guide walls (1-3-1); two spring ejector pins (4) are fixed to the front of the push plate (2); the rear of the push plate (2) is fixed to the quick pressing clamp (3); one end of the spring (5) is fixed to the bottom plate (1-1) of the base plate (1); the other end of the spring (5) and the relay positioning groove (1-1-1) and two positioning columns (1-2) on the bottom plate (1-1) correspond to the push plate (2) respectively; the bottom surface of the push plate (2) is in contact with the table surface, and the two side surfaces of the push plate (2) are in clearance with the two guide walls (1-3-1); the push plate (2) can move forward and backward on the sliding platform (1-3).

2. A tool for shaping a commercial vehicle transmission relay according to claim 1, characterized in that: One end of the substrate (1) is a bottom plate (1-1), and the other end is a sliding platform (1-3); both sides of the sliding platform (1-3) are guide walls (1-3-1); a rectangular relay positioning groove (1-1-1) is provided on the surface of the bottom plate (1-1); a spring groove (1-1-2) is provided at the center of the relay positioning groove (1-1-1); and a positioning column (1-2) is provided on each side of the relay positioning groove (1-1-1).

3. The tooling for shaping a commercial vehicle transmission relay according to claim 1, characterized in that: The push plate (2) is a rectangular plate, and one side of the push plate (2) is provided with a blind hole (2-1) with a thread.

4. The tooling for shaping a commercial vehicle transmission relay according to claim 1, characterized in that: The height of the positioning column (1-2) is 19.5 mm, and the tolerance is ±0.05 mm.

5. The tooling for shaping a commercial vehicle transmission relay according to claim 1, characterized in that: The distance between the centers of the two spring ejector pins (4) is 15 mm, and the tolerance is ±0.05 mm.

6. A method for using the tooling for shaping a commercial vehicle transmission relay according to claim 1, characterized in that: Step 1, place the assembled relay (6) magnetic core (6-2) on the spring (5) in the relay positioning groove (1-1-1), push the handle (3-1) of the quick pressing clamp (3) forward, and the pressing (3-2) of the quick pressing clamp (3) drives the push plate (2) to move forward under the guidance of the guide walls (1-3-1) on both sides of the sliding platform (1-3), so that the two spring ejectors (4) contact the relay (6) coil (6-1) until the push plate (2) contacts the two positioning columns (1-2), and under the action of the spring (5) and the two spring ejectors (4), the magnetic core (6-2) and the coil (6-1) are accurately combined together, and at this time, the relay 6 is firmly fixed in the relay positioning groove (1-1-1); Step 2, putting the tooling with the relay (6) fixed thereon into an oven for baking, and drying the core and the wire package with a drying glue to fix the shape; Step 3. Take the tooling out of the oven, push the handle (3-1) of the quick pressing pliers (3) backward, the support (3-2) of the quick pressing pliers (3) drives the push plate (2) to move backward, the relay (6) is separated from the two spring ejector pins (4) and the two positioning columns (1-2), the spring (5) pushes the relay (6) into the empty area, and the finalized relay (6) is taken out.

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