Electronic water pump rear cover, drilling clamp of electronic water pump rear cover and use method of clamp

Abstract

The invention relates to an electronic water pump rear cover, a drilling clamp of the electronic water pump rear cover and a clamp using method. The drilling clamp of the electronic water pump rear cover comprises a workbench, a main insertion rod and an auxiliary insertion rod, wherein the main insertion rod and the auxiliary insertion rod are correspondingly matched with three counterbores; the auxiliary insertion rods are matched with clamping control assemblies; the clamping control assembly comprises a control clamping table, a center shaft is welded to the bottom end of the control clamping table, and a locking assembly and an unlocking rotating assembly are arranged at the bottom of the center shaft in a matched mode. The auxiliary inserting rod is controlled to clamp a workpiece through gear tooth transmission, and the automatic clamping effect is achieved. Through cooperation of the clamping pin and the clamping groove, position locking of the control clamping table and a clamped workpiece can be automatically achieved. The locking state can be unlocked and a clamped workpiece can be driven to rotate by 90 degrees through slope extrusion fit and gear and rack transmission in sequence, so that the effect of automatic transposition for hole machining is achieved, labor consumption caused by a large amount of manual operation can be saved, and the machining efficiency is indirectly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobile parts production and processing, in particular to an electronic water pump rear cover and a drilling jig therefor, and a method of using the jig. BACKGROUND

[0002] An electronic water pump is a liquid transmission device driven by electricity, which can improve temperature management efficiency by precisely controlling the flow of coolant compared to a traditional mechanical water pump. Among the various components of an electronic water pump, the electronic water pump rear cover plays a good protective and sealing role for the internal components of the water pump. Therefore, the rear cover is one of the essential processing parts in the manufacture of an electronic water pump.

[0003] In order to ensure that the electronic water pump rear cover can be conveniently assembled with the main body of the water pump, at least four positions on the electronic water pump rear cover need to be bored, and then threaded holes are processed. However, in reality, it is difficult for traditional jigs and equipment to clamp the electronic water pump rear cover. Even if clamping can be completed, each time after processing a single threaded hole, the drilling needs to be changed, which requires manual repositioning of the clamping, which is relatively cumbersome. SUMMARY

[0004] In order to solve the above-mentioned clamping defects for drilling the electronic water pump rear cover, the present application provides an electronic water pump rear cover, a drilling jig therefor, and a method of using the jig.

[0005] The technical problems solved by the present application are solved by the following technical solutions:

[0006] An electronic water pump rear cover includes a rear cover body having three countersunk holes and four threaded holes uniformly distributed in a ring direction. The four threaded holes are first bored and then processed by corresponding threaded drills.

[0007] A drilling jig for an electronic water pump rear cover includes a workbench and a main insert rod and a secondary insert rod corresponding to the three countersunk holes. The secondary insert rod is fitted with a clamping control assembly. The clamping control assembly includes a control clamp table, a center shaft welded to the bottom end of the control clamp table, a locking assembly, and an unlocking rotation assembly. The center shaft is installed on the workbench through a bearing. The main insert rod can be inserted into the countersunk hole to achieve positioning. The secondary insert rod can be clamped to the electronic water pump rear cover under the action of the clamping control assembly. The locking assembly is used to lock the control clamp table and the clamped workpiece, facilitating threaded hole drilling on the workpiece. The unlocking rotation assembly is used to sequentially unlock, rotate 90 degrees, and then restore the locking of the control clamp table and the clamped workpiece to achieve hole changing processing.

[0008] Preferably, each main inserting rod is provided with an inner groove for slidingly mounting the corresponding secondary inserting rod, and each secondary inserting rod is provided with an arc-shaped fitting portion at the upper portion. That is, the three secondary inserting rods are slidably arranged, and the arc-shaped fitting portions are fitted on the upper portions of the counterbores on the workpiece, so that the workpiece is clamped and fixed.

[0009] Preferably, all the main inserting rods are fixedly connected with support seats mounted on the control clamping table. The support seats support the workpiece during installation. The support seats are provided with three circular grooves for the main inserting rods and the secondary inserting rods to pass through.

[0010] Preferably, the main inserting rods are fixedly mounted on the control clamping table, and the clamping control assembly further comprises an I-shaped motor mounted on the control clamping table. The I-shaped motor is connected with a transmission gear, the transmission gear is engaged with a central gear, and the central gear is connected with an auxiliary rod mounted on the control clamping table through a bearing seat. The central axes of the auxiliary rod and the central gear are collinear. That is, the rotation of the central gear can be controlled through the transmission of the gear teeth.

[0011] Preferably, the central gear is uniformly provided with three circular arc grooves, each of which is slidably and hingedly matched with the bottom end of the corresponding secondary inserting rod. The three circular arc grooves are uniformly distributed in a ring shape with the center of the central gear as the center. That is, when the central gear rotates, the three secondary inserting rods can synchronously slide radially, so that the workpiece can be synchronously clamped or released.

[0012] Preferably, the locking assembly comprises an auxiliary circular wheel mounted on the lower portion of the central shaft. The circular surface of the auxiliary circular wheel is uniformly provided with four clamping grooves in the annular direction. The number and distribution of the clamping grooves correspond to and adapt to the number and distribution of the threaded holes of the workpiece.

[0013] Preferably, the locking assembly further comprises a loading box mounted on the lower portion of the control clamping table. The loading box is provided with a loading groove, and a spring is mounted in the loading groove. The spring is connected with a clamping pin which is slidably matched with the loading groove. The clamping pin is matched with the clamping groove, and the clamping pin is provided with a circular shaft portion. That is, the clamping pin can be matched with any one of the clamping grooves under the action of the spring, so as to lock the control clamping table and the clamped workpiece.

[0014] Preferably, the unlocking rotating assembly comprises a straight gear mounted on the lower portion of the central shaft and a vertical plate frame mounted on the workbench. The vertical plate frame is provided with two rectangular grooves, each of which is slidably mounted with a vertical rod. The two vertical rods are welded with a transfer plate, and the transfer plate is connected with a rack and an auxiliary rod. The trajectories of the two rectangular grooves are the same and parallel to each other. That is, the rack and the auxiliary rod can slide along the rectangular trajectory. The vertical rod is L-shaped.

[0015] Preferably, the auxiliary rod has an inclined surface adapted to the round shaft; the rack is adapted to the spur gear; a type II motor is mounted on the upright plate frame, and the type II motor is connected to the main rotating rod, which has a through slot through which either of the two upright rods passes. During sliding, the inclined surface can press the round shaft, causing the locking pin to disengage from the locking slot and release the lock. Subsequently, the rack slides to engage with the spur gear. Under the action of gear and rack transmission, the entire control table and the clamped workpiece rotate 90 degrees, achieving the purpose of changing the hole for machining.

[0016] The beneficial effects of this invention are:

[0017] 1. It can easily place and position the back cover of the electronic water pump, and control the auxiliary insertion rod to clamp the workpiece through gear transmission, so as to achieve the effect of automatic clamping.

[0018] 2. Before each drilling operation, the position of the control table and the workpiece being clamped can be automatically locked by the cooperation of the locking pin and the locking slot, which facilitates the stable implementation of thread hole machining.

[0019] 2. After each drilling, the locking state can be released through the inclined plane extrusion and gear rack transmission, and the clamped workpiece can be driven to rotate 90 degrees, achieving the effect of automatic repositioning for hole processing. This can save a lot of labor costs caused by manual operation and indirectly improve processing efficiency. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a first-person perspective 3D view of the back cover of the electronic water pump;

[0022] Figure 2 This is a second-view 3D view of the back cover of the electronic water pump;

[0023] Figure 3 This is a first-person perspective 3D view of the drilling fixture for the rear cover of an electronic water pump.

[0024] Figure 4 This is a second-view perspective 3D view of the drilling fixture for the rear cover of an electronic water pump.

[0025] Figure 5 yes Figure 3 A magnified view of a portion of point I;

[0026] Figure 6 yes Figure 3 Enlarged view of section II;

[0027] Figure 7 yes Figure 3 Enlarged view of section III;

[0028] Figure 8 is Figure 4 a local enlarged view of IV at;

[0029] Figure 9 is a state diagram of an embodiment of the present application;

[0030] Figure 10 is a structural diagram of the support seat.

[0031] In the figure: 1, rear cover body; 1a, countersunk hole; 1b, threaded hole; 2, main insertion rod; 2a, built-in slot; 3, auxiliary insertion rod; 3a, arc-shaped fitting part; 4, control clamping table; 5, I-type motor; 6, transmission gear; 7, central gear; 7a, circular arc slot; 8, central shaft; 9, upright plate frame; 9a, rectangular slot; 10, auxiliary circular wheel; 10a, clamping slot; 11, loading box; 11a, loading slot; 12, spring; 13, clamping pin; 13a, circular shaft part; 14, straight gear; 15, workbench; 16, auxiliary rod; 17, upright rod; 18, transfer plate; 19, rack; 20, auxiliary rod; 21, II-type motor; 22, main rotating rod; 22a, insertion slot; 23, support seat. DETAILED DESCRIPTION

[0032] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be described more clearly and completely below in conjunction with the accompanying drawings of the embodiments. Of course, the described embodiments are only a part of the present application rather than the whole, and other embodiments obtained by those skilled in the art based on this embodiment without creative labor are within the protection scope of the present application.

[0033] As shown in Figure 1 and Figure 2 , an electronic water pump rear cover comprises a rear cover body 1, which is uniformly provided with three countersunk holes 1a and four threaded holes 1b in the annular direction. The four threaded holes 1b are formed by first boring and then processing corresponding threaded holes.

[0034] As shown in Figure 3 and Figure 5As shown, an electronic water pump rear cover drilling processing clamp, including workbench 15 and with three countersunk hole 1a corresponding to the main plug rod 2, vice plug rod 3; vice plug rod 3 are matched with clamping control assembly; clamping control assembly includes control chuck 4, control chuck 4 bottom welding has a central shaft 8, the central shaft 8 bottom respectively matched with locking assembly and unlocking rotation assembly; central shaft 8 bottom is installed on the workbench 15 through bearing. Main plug rod 2 can be inserted into the countersunk hole 1a, realize positioning. Vice plug rod 3 can be under the action of clamping control assembly, realize the clamping of electronic water pump rear cover. Locking assembly is used for locking control chuck 4 and the workpiece clamped, facilitate the workpiece on a position thread hole drilling processing. Unlocking rotation assembly is used for unlocking, rotating 90 degrees, restoring locking in turn to control chuck 4 and the workpiece clamped, to realize the processing of hole position.

[0035] As shown in Figure 5 Each main plug rod 2 is provided with a built-in groove 2a for slidingly mounting the corresponding vice plug rod 3, and each vice plug rod 3 is provided with an arc-shaped fitting portion 3a at the upper portion. The above-mentioned conventional design of sliding structure is that the three vice plug rods 3 are slidably arranged so that the arc-shaped fitting portions 3a are abutted on the upper portions of the countersunk holes 1a on the workpiece to achieve clamping and fixing of the workpiece.

[0036] As shown in Figure 5 and Figure 10 All the main plug rods 2 are fixedly connected with support seats 23 which are mounted on the control chuck 4. The support seats 23 support the workpiece during installation. The support seats 23 are provided with three circular grooves for the main plug rods 2 and the vice plug rods 3 to pass through.

[0037] As shown in Figure 3 and Figure 6 The main plug rods 2 are fixedly mounted on the control chuck 4, and the clamping control assembly further comprises an I-shaped motor 5 mounted on the control chuck 4. The I-shaped motor 5 is connected with a transmission gear 6, the transmission gear 6 is engaged with a central gear 7, and the central gear 7 is connected with an auxiliary rod 16 mounted on the control chuck 4 through a bearing seat. The central axes of the auxiliary rod 16 and the central shaft 8 are collinear. That is, the central gear 7 can be rotated through gear transmission.

[0038] As shown in Figure 6 The central gear 7 is uniformly provided with three circular arc grooves 7a, and each circular arc groove 7a is slidably and hingedly connected with the bottom end of the corresponding vice plug rod 3. The three circular arc grooves 7a are uniformly distributed in a ring shape with the center of the central gear 7 as the center. That is, when the central gear 7 rotates, the three vice plug rods 3 can be synchronously radially slid, so that the workpiece can be synchronously clamped or released.

[0039] As shown in Figure 3 and Figure 7As shown, the locking assembly includes a auxiliary round wheel 10 mounted on the lower part of the central shaft 8; the circular surface of the auxiliary round wheel 10 is evenly distributed with four clamping grooves 10a in the annular direction. The number and distribution of the clamping grooves 10a correspond to the number and distribution of the threaded holes of the workpiece.

[0040] As shown in Figure 4 and Figure 8 , the locking assembly further includes a loading box 11 mounted on the lower part of the control clamp 4, the loading box 11 is provided with a loading groove 11a, a spring 12 is installed in the loading groove 11a, the spring 12 is connected with a clamping pin 13 which is in sliding fit with the loading groove 11a; the clamping pin 13 is matched with the clamping groove 10a; the clamping pin 13 is provided with a circular shaft part 13a. That is, the clamping pin 13 can be matched with any one of the clamping grooves 10a under the action of the spring force, so as to realize the locking of the control clamp 4 and the clamped workpiece.

[0041] As shown in Figure 7 , the unlocking rotating assembly includes a straight gear 14 mounted on the lower part of the central shaft 8 and a vertical plate frame 9 mounted on the workbench 15; the vertical plate frame 9 is provided with two rectangular grooves 9a, each rectangular groove 9a is slidingly installed with a vertical rod 17, and the two vertical rods 17 are both welded with a transfer plate 18, the transfer plate 18 is connected with a rack 19 and an auxiliary rod 20. The trajectories of the two rectangular grooves 9a are the same and parallel to each other. The above-mentioned sliding structure is a conventional design, that is, it ensures that the rack 19 and the auxiliary rod 20 can slide along the rectangular trajectory. The vertical rod 17 is L-shaped.

[0042] As shown in Figure 7 and Figure 8 , the auxiliary rod 20 is provided with an inclined surface 20a matched with the circular shaft part 13a; the rack 19 is matched with the straight gear 14; the vertical plate frame 9 is installed with a II type motor 21, the II type motor 21 is connected with a main rotating rod 22, and the main rotating rod 22 is provided with a penetrating slot 22a through which any one of the two vertical rods 17 passes. During the sliding process, the inclined surface 20a can extrude the circular shaft part 13a, so that the clamping pin 13 is disengaged from the clamping groove 10a and the locking is released, and then the rack 19 slides to match the straight gear 14, under the action of the gear and rack transmission, the entire control clamp 4 and the clamped workpiece rotates 90 degrees, achieving the purpose of hole changing machining.

[0043] Before use, the corresponding drilling equipment can be installed on the workbench 15.

[0044] In use, as shown in Figure 9 , the electronic water pump rear cover is positioned and placed on the support seat 23 in the form of three countersunk hole 1a and corresponding main insertion rod 2 insertion fit. Under the driving of the I type motor 5 and the action of the gear transmission, the three auxiliary insertion rods 3 slide towards the radial direction and make the arc-shaped fitting part 3a clamp and fix the workpiece.

[0045] After each single-hole processing is completed, the main rotating rod 22 is rotated by the type II motor 21, so that the rack 19 and the auxiliary rod 20 slide along the rectangular trajectory. At the beginning of the sliding, the inclined surface 20a extrudes the circular shaft part 13a, so that the catch pin 13 is disengaged from the catch groove 10a and is unlocked, and then the rack 19 slides to engage with the spur gear 14, under the action of the gear-rack transmission, the whole control clamp table 4 and the clamped workpiece are rotated by 90 degrees. Then the rack 19 and the auxiliary rod 20 slide upward, on the one hand, the gear engagement is disengaged, and on the other hand, the extrusion state of the auxiliary rod 20 and the circular shaft part 13a is disengaged, so that the catch pin 13 engages with another catch groove 10a under the action of the spring force, achieving the effect of restoring the locking for processing another hole.

[0046] The above shows and describes the basic principles, main features and advantages of the present application. It should be understood by those skilled in the art that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An electronic water pump back cover comprising a back cover body (1), characterized in that: Three countersunk holes (1a) and four threaded holes (1b) are uniformly distributed on the rear cover body (1) in the annular direction.

2. An electronic water pump rear cover drilling jig, according to the electronic water pump rear cover of claim 1, characterized in that: The workbench (15) and the main insertion rod (2) and the auxiliary insertion rod (3) matched with the three countersunk holes (1a) are included; the auxiliary insertion rod (3) is matched with a clamping control assembly; the clamping control assembly includes a control clamping table (4), the bottom end of the control clamping table (4) is welded with a central shaft (8), the bottom part of the central shaft (8) is matched with a locking assembly and an unlocking rotating assembly respectively; the bottom end of the central shaft (8) is installed on the workbench (15) through a bearing.

3. The electronic water pump rear cover drilling processing clamp according to claim 2, characterized in that: Each main insertion rod (2) is provided with an embedded groove (2a) for slidingly installing the corresponding auxiliary insertion rod (3), and each auxiliary insertion rod (3) is provided with an arc-shaped fitting portion (3a) at the upper part; all the main insertion rods (2) are fixedly connected with a support seat (23) installed on the control clamping table (4).

4. The electronic water pump rear cover drilling fixture of claim 2, wherein: The main insertion rod (2) is fixedly installed on the control clamping table (4), and the clamping control assembly further includes an I-shaped motor (5) installed on the control clamping table (4), the I-shaped motor (5) is connected with a transmission gear (6), the transmission gear (6) is engaged with a central gear (7), and the central gear (7) is connected with an auxiliary rod (16) installed on the control clamping table (4) through a bearing seat.

5. The electronic water pump back cover drilling fixture of claim 4, wherein: The central gear (7) is uniformly provided with three circular arc grooves (7a), and each circular arc groove (7a) is slidingly and hingedly matched with the bottom end of the corresponding auxiliary insertion rod (3).

6. The electronic water pump back cover drilling fixture of claim 2, wherein: The locking assembly includes an auxiliary circular wheel (10) installed at the lower part of the central shaft (8); the circular surface of the auxiliary circular wheel (10) is uniformly provided with four clamping grooves (10a) in the annular direction.

7. The electronic water pump back cover drilling processing clamp according to claim 6, characterized in that: The locking assembly further includes a loading box (11) installed at the lower part of the control clamping table (4), the loading box (11) is provided with a loading groove (11a) inside, the loading groove (11a) is installed with a spring (12) inside, the spring (12) is connected with a clamping pin (13) which is slidingly matched with the loading groove (11a); the clamping pin (13) is matched with the clamping groove (10a); the clamping pin (13) is provided with a circular shaft portion (13a).

8. The electronic water pump back cover drilling processing clamp according to claim 7, characterized in that: The unlocking rotating assembly includes a straight gear (14) installed at the lower part of the central shaft (8) and a vertical plate frame (9) installed on the workbench (15); the vertical plate frame (9) is provided with two rectangular grooves (9a), each rectangular groove (9a) is slidingly installed with a vertical rod (17), and the two vertical rods (17) are welded with a transfer plate (18), the transfer plate (18) is connected with a rack (19) and an auxiliary rod (20).

9. The electronic water pump back cover drilling processing clamp according to claim 8, characterized in that: The auxiliary rod (20) is provided with an inclined surface (20a) matched with the circular shaft portion (13a); the rack (19) is matched with the straight gear (14); the vertical plate frame (9) is installed with a II-shaped motor (21), the II-shaped motor (21) is connected with a main rotating rod (22), and the main rotating rod (22) is provided with a penetrating slot (22a) through which any one of the two vertical rods (17) passes.

10. A method for using an electronic water pump rear cover drilling processing clamp according to any one of claims 2 to 9, wherein the electronic water pump rear cover drilling processing clamp comprises: The specific method is as follows: The electronic water pump rear cover is positioned and placed on the support seat (23) in a three countersunk hole (1a) and corresponding main plug rod (2) insertion fitting mode; under the driving of the I type motor (5) and the action of the gear transmission, the three auxiliary plug rods (3) slide towards the radial inner side and make the arc-shaped fitting part (3a) clamp and fix the workpiece; After each single hole processing is completed, the main rotating rod (22) is rotated by the II type motor (21) driving, so that the rack (19) and the auxiliary rod (20) slide along the rectangular trajectory; at the beginning of sliding, the inclined surface (20a) extrudes the circular shaft part (13a), so that the catch pin (13) and the catch groove (10a) are disengaged and unlocked, then the rack (19) slides to cooperate with the spur gear (14), under the action of the gear and rack transmission, the whole control clamp table (4) and the clamped workpiece rotate 90 degrees; then the rack (19) and the auxiliary rod (20) slide upwards, on the one hand the gear cooperation is disengaged, on the other hand the extrusion state of the auxiliary rod (20) and the circular shaft part (13a) is disengaged, so that the catch pin (13) cooperates with another catch groove (10a) under the action of the spring force, and the locking is restored.

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