A water-cooled drilling device for the production of water pump castings

Abstract

The invention discloses a water-cooled drilling device for producing water pump castings, and specifically relates to the technical field of water pump casting production equipment. The invention is provided with a clamping assembly, which is composed of a sliding clamping unit, a rotating clamping unit and a pressing clamping unit working together to fix the two ends of the water pump casting and the outside of the pipeline of the water pump casting, thereby increasing the stability of the water pump casting during drilling. Then, the sliding clamping unit follows the base to descend downward to avoid affecting the rotation of the water pump casting, the rotating clamping unit remains stationary, the pressing clamping unit releases the clamping restriction on the other end of the water pump casting, and then the water pump casting is flipped over. At this time, the lower surface of one end of the water pump casting is flipped upward, the water pump casting pipeline rotates in the rotating clamping unit, and then the lower surface of the flipped upward water pump casting is drilled. Since the position of the water pump casting is still in the clamping assembly, only a flipping action is performed, and there is no need to re-place and correct the position of the water pump casting, thereby improving the drilling efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of water pump casting production equipment, in particular to a water-cooled drilling device for water pump casting production. Background Art

[0002] Water pump castings are an important part of water pumps. During the production process, it is necessary to drill holes on the surface of the shell of the water pump castings. Generally, these are assembly holes, such as drilling holes at the water inlet or outlet to meet the installation requirements with other equipment.

[0003] After searching, the invention patent with publication number CN115781405A discloses a water-cooled drilling device for the production of water pump castings. The cooling water is recycled and the structure is simple. The waste chips mixed in the cooling water can be separated and collected very conveniently, which improves the practicality of the device. In the above scheme, the water pump casting is clamped and fixed by the clamping plates on both sides. The water pump casting is not a regular shape, and the clamping effect of the clamping plates is not ideal. Moreover, the position of the water pump casting is different each time it is placed on the workbench. After the upper surface is drilled, the lower surface also needs to be drilled. The position after flipping is also different. It needs to be accurately positioned when drilling. Such repetitive operations make the drilling efficiency low. Summary of the invention

[0004] The object of the present invention is to provide a water-cooled drilling device for producing water pump castings to solve the problems mentioned in the above background technology.

[0005] The present invention can be implemented through the following technical scheme: a water-cooled drilling device for producing water pump castings, comprising a processing body, the upper surface of which is provided with a clamping assembly for limiting the water pump casting, and the top of the processing body is connected to a top plate through a support column, the clamping assembly comprises a base mounted on the top surface of the processing body for lifting and lowering, the base is not arranged parallel to the processing body, and a sliding clamping unit for fixing one end of the water pump casting is installed on the upper surface of the base, a rotating clamping unit for fixing the outside of the water pump casting pipeline is provided on one side of the base, and a pressing clamping unit for fixing the other end of the water pump casting is provided on one side of the rotating clamping unit.

[0006] A further technical improvement of the present invention is that the sliding clamping unit includes a supporting base plate which is in close contact with the bottom surface of the water pump casting, the supporting base plate is arranged parallel to the base, and a vertical plate is fixedly connected to the top end of the supporting base plate, a clamping cylinder is installed on the bracket plate on the outer surface of the vertical plate, and two through grooves are penetrated on the surface of the vertical plate, and both driving ends of the clamping cylinder are installed with support rods which slide through the corresponding through grooves, and the ends of the support rods are fixedly connected to arc-shaped clamping plates which clamp the water pump casting.

[0007] A further technical improvement of the present invention is that the rotating clamping unit includes a lower bracket fixedly mounted on the top surface of the processing body and in contact with the outer surface of the water pump casting pipe, and the end of the lower bracket is rotatably mounted with an upper clamping seat for pressing the water pump casting pipe through a driving shaft.

[0008] A further technical improvement of the present invention lies in that: the pressing and clamping unit includes a bearing seat, a placement cavity which fits the outer surface of the water pump casting pipe flange is provided in the middle of the upper surface of the bearing seat, a vacant arc cavity is provided on the inner wall surface of one end of the placement cavity, a push plate which clamps the end surface of the pipe flange is adapted to be installed inside the vacant arc cavity, two through grooves communicating with the vacant arc cavity are provided on the two outer wall surfaces of the bearing seat, two protruding plates which slide in the corresponding through grooves are installed on the outer surface of the push plate, a fixed block is provided at the end of the outer wall surface of the bearing seat and located on one side of the push plate, and a pressing cylinder for pushing the protruding plate to move is installed on the surface of the fixed block.

[0009] A further technical improvement of the present invention is that: a mounting hole 1 is provided at one end of the upper surface of the bearing seat, and a mounting hole 2 is provided at the other end of the upper surface of the bearing seat, the mounting hole 2 and the mounting hole 1 are both connected to the placement cavity, the inner diameter of the placement cavity is larger than the inner diameter of the mounting hole 2, the inner diameter of the mounting hole 2 is larger than the inner diameter of the mounting hole 1, and the inner wall surface of the mounting hole 1 is in contact with the outer surface of the water pump casting pipe.

[0010] A further technical improvement of the present invention is that meshes are provided on the upper surface of the processing body and on the outside of the clamping assembly, baffles are provided on the outside of the clamping assembly and on both sides of the processing body, a spray rack is rotatably installed on the upper surface of the processing body and on the rear side of the pressing clamping unit, and a reflux cooling chamber connected to the liquid storage tank on the top plate is installed inside the processing body.

[0011] A further technical improvement of the present invention is that a linear guide is installed on the lower surface of the top plate, a rotary cylinder is installed on the slider seat outside the linear guide, a connecting seat is connected to the driving end of the rotary cylinder, and a drilling assembly for drilling the marked holes on the water pump casting is installed on the bottom surface of the connecting seat.

[0012] A further technical improvement of the present invention is that the drilling assembly includes a fixed plate fixed to the connecting seat, and a sliding plate is slidably arranged below the fixed plate, a gear ring is fixed to the lower surface of the sliding plate, and a transmission gear driven by the middle driving gear and moving in a circular motion around the center of the driving gear is meshingly installed below the sliding plate, a fitting slider is fixed to the middle of the top of the transmission gear, and an annular groove is provided on the lower surface of the sliding plate for limiting the sliding of the fitting slider, a propulsion cylinder is installed in the middle below the transmission gear, and a drill rod driven by a drilling motor is fixed to the pushing end of the propulsion cylinder.

[0013] A further technical improvement of the present invention is that a linear slide groove is provided on the bottom surface of the fixed plate, a guide slider fixed to the upper surface of the sliding plate is slidably installed inside the linear slide groove, and an adjusting cylinder is provided on the outer surface of the fixed plate to push the sliding plate to move longitudinally.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. A clamping assembly is provided, and the mounting port at one end of the water pump casting is fitted with the upper surface of the supporting base plate, and the flange at the other end and the connected pipe are respectively placed in the placement cavity and the lower support seat, and the sliding clamping unit, the rotating clamping unit and the pressing clamping unit work together to fix the two ends of the water pump casting and the external pipe of the water pump casting to increase the stability of the water pump casting during drilling. After the upper surface of one end of the water pump casting is drilled, the sliding clamping unit on the upper part of the base releases the clamping restriction on one end of the water pump casting and descends to bring The sliding clamping unit moves downward synchronously to avoid interference with the rotation of the water pump casting. The rotating clamping unit remains stationary, and the clamping unit is pressed to release the clamping restriction on the other end of the water pump casting. Then the water pump casting is flipped over. At this time, the lower surface of one end of the water pump casting is flipped upward, and the water pump casting pipeline rotates in the rotating clamping unit. Then, the lower surface of the flipped upward water pump casting is punched. Since the position of the water pump casting is still in the clamping assembly, only the flipping action is performed, and there is no need to re-place and correct the position of the water pump casting, thereby improving the punching efficiency.

[0016] 2. By setting a linear guide and a rotating cylinder, after the drilling assembly punches the marked hole outside the mounting port at one end of the water pump casting, it follows the slider seat to slide on the linear guide to the position of the pipe flange at the other end of the water pump casting, and then the rotating cylinder drives the connecting seat and the drilling assembly to flip and rotate together. Since the midpoint of the mounting port at one end of the water pump casting does not coincide with the midpoint of the flange, when the drilling assembly rotates, the adjusting cylinder pushes the sliding plate to slide longitudinally on the bottom surface of the fixed plate. At this time, the driving gear and the flange are cocentric, so that the end point of the drill rod is located on the annular surface of the flange marking hole, changing the drilling position of the drill rod to adapt to drilling at two different positions, and the transmission gear rotates around the center of the flange to the flange marking hole. The drilling hole position is more accurate, no marking is required, and the drilling quality is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0018] Figure 1 It is a schematic diagram of the external structure of the present invention;

[0019] Figure 2 For the present invention Figure 1 A partial enlarged view of the middle A;

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the bearing seat of the present invention;

[0021] Figure 4 It is a schematic diagram of the installation structure of the fixing plate of the present invention;

[0022] Figure 5 It is a cross-sectional view of the installation structure of the fixed plate and the sliding plate of the present invention.

[0023] In the figure: 1. processing body; 2. base; 3. supporting bottom plate; 4. lower support seat; 5. upper clamping seat; 6. baffle; 7. drill rod; 8. top plate; 9. bearing seat; 10. guide slide block; 11. vertical plate; 12. through groove one; 13. support rod; 14. arc clamping plate; 15. clamping cylinder; 16. mounting hole one; 17. vacant arc cavity; 18. placement cavity; 19. push plate; 20. through groove two; 21. fixed block; 22. protruding plate; 23. mounting hole two; 24. linear guide; 25. rotating cylinder; 26. connecting seat; 27. transmission gear; 28. gear ring; 29. ​​fixed plate; 30. sliding plate; 31. annular slide groove; 32. fitting slide block; 33. propulsion cylinder; 34. linear slide groove; 35. adjusting cylinder. DETAILED DESCRIPTION

[0024] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0025] See also Figure 1-Figure 5 As shown, the present invention provides a water-cooled drilling device for producing water pump castings, comprising a processing body 1, a clamping assembly for limiting the water pump casting is arranged on the upper surface of the processing body 1, and a top plate 8 is connected to the upper side of the processing body 1 through a support column, the clamping assembly comprises a base 2 which is lifted and installed on the top surface of the processing body 1, the base 2 is not arranged parallel to the processing body 1, and a sliding clamping unit for fixing one end of the water pump casting is installed on the upper surface of the base 2, a rotating clamping unit for fixing the outside of the water pump casting pipeline is arranged on one side of the base 2, and a pressing clamping unit for fixing the other end of the water pump casting is arranged on one side of the rotating clamping unit. When in use, as shown in FIG. Figure 1As shown, in this state, the base 2 is raised and exposed on the upper surface of the processing body 1, and the sliding clamping unit is supported by the base 2, and the water pump casting is aligned and placed inside the sliding clamping unit, the rotating clamping unit and the pressing clamping unit. Then the sliding clamping unit, the rotating clamping unit and the pressing clamping unit work together to fix the two ends of the water pump casting and the outside of the pipe of the water pump casting, thereby increasing the stability of the water pump casting during drilling and avoiding shaking during drilling. At the same time, when the upper surface of one end of the water pump casting is drilled, the sliding clamping unit on the upper part of the base 2 releases the clamping restriction on one end of the water pump casting, and then the lower The base 2 is lowered and drives the sliding clamping unit to move downward synchronously, while the rotating clamping unit remains unchanged. The pressing clamping unit releases the clamping restriction on the other end of the water pump casting, and then the water pump casting is turned over half a circle, that is, 180 degrees. At this time, the lower surface of one end of the water pump casting is turned upward. In this process, the water pump casting pipeline rotates in the rotating clamping unit. Since the downward movement of the base 2 will not interfere with and affect the rotation of the water pump casting, the lower surface of the turned-up water pump casting is then punched. Since the position of the water pump casting is still in the clamping assembly, only the flipping action is performed, and there is no need to reposition and correct the position of the water pump casting, and the punching quality is higher.

[0026] like Figure 1 and Figure 2 As shown, the sliding clamping unit includes a supporting base plate 3 that is in contact with the bottom surface of the water pump casting, the supporting base plate 3 is arranged parallel to the base 2, and the top end of the supporting base plate 3 is fixedly connected to a vertical plate 11, a clamping cylinder 15 is installed on the bracket plate on the outer surface of the vertical plate 11, and two through grooves 12 are penetrated on the surface of the vertical plate 11, and the two driving ends of the clamping cylinder 15 are both installed with support rods 13 that slide through the corresponding through grooves 12, and the ends of the support rods 13 are fixedly connected to the water pump casting. The arc-shaped clamping plate 14 and the sliding clamping unit have two states. Initially, the surface of the supporting base plate 3 fits with the lower surface of one end of the water pump casting, and then the clamping cylinder 15 drives the two support rods 13 to slide in the through groove 12 and drive the two connected arc-shaped clamping plates 14 to approach each other, clamping and fixing the outer surface of one end of the water pump casting; after the use of the upper surface is over, the sliding clamping unit returns to its initial state and moves downward, away from one end of the water pump casting, to prevent affecting the rotation of the water pump casting.

[0027] like Figure 1As shown, the rotating clamping unit includes a lower bracket 4 fixedly mounted on the top surface of the processing body 1 and in contact with the outer surface of the water pump casting pipe, and an upper clamping seat 5 for pressing the water pump casting pipe is rotatably mounted on the end of the lower bracket 4 through a driving shaft. Initially, the upper clamping seat 5 and the lower bracket 4 are vertically arranged to facilitate the placement of the water pump casting. The outer surface of the water pump casting pipe fits with the top surface of the lower bracket 4, and then the upper clamping seat 5 is flipped over and closed to fix the outside of the water pump casting pipe; when a hole is punched on the lower surface of one end of the water pump casting, the rotating clamping unit remains unchanged, and the water pump casting pipe rotates in the rotating clamping unit.

[0028] like Figure 1 and Figure 3 As shown, the pressing and clamping unit includes a bearing seat 9, a placement cavity 18 is provided in the middle of the upper surface of the bearing seat 9 to fit the outer surface of the flange of the water pump casting pipe, a vacant arc cavity 17 is provided on the inner wall surface of one end of the placement cavity 18, and a push plate 19 is installed inside the vacant arc cavity 17 to clamp the end surface of the pipe flange, and two through grooves 20 communicating with the vacant arc cavity 17 are provided on the two outer wall surfaces of the bearing seat 9, and two protruding plates 22 are installed on the outer surface of the push plate 19 to limit and slide in the corresponding through grooves 20, and the bearing seat 9 A fixing block 21 is provided at the end of the outer wall and on one side of the push plate 19. A pressing cylinder for pushing the protruding plate 22 to move is installed on the surface of the fixing block 21. The pipe flange at the other end of the water pump casting is matched and placed in the placement cavity 18, and the push plate 19 is received in the vacant arc cavity 17. Then, the protruding plate 22 is pushed by the pressing cylinder to slide in the through groove 2 and drive the push plate 19 to approach the wall of the moving pipe flange until it fits. The flange is fixed by the push plate 19 to facilitate stable drilling of the flange.

[0029] like Figure 3 As shown, a mounting hole 16 is provided at one end of the upper surface of the bearing seat 9, and a mounting hole 23 is provided at the other end of the upper surface of the bearing seat 9. The mounting hole 23 and the mounting hole 16 are both connected to the placement cavity 18. The inner diameter of the placement cavity 18 is larger than the inner diameter of the mounting hole 23. The inner diameter of the mounting hole 23 is larger than the inner diameter of the mounting hole 16. The inner wall surface of the mounting hole 16 fits with the outer surface of the water pump casting pipe. During installation, the outer surface of the pipe of the water pump casting fits on the inner wall surface of the mounting hole 16, and the outer wall surface of the flange fits in the placement cavity 18. The inner wall surface of the placement cavity 18 close to the mounting hole 23 and the push plate 19 fix the two sides of the pipe flange, and the drilling operation is performed on one side of the mounting hole 23.

[0030] like Figure 1As shown, meshes are provided on the upper surface of the processing body 1 and on the outside of the clamping assembly, baffles 6 are provided on the outside of the clamping assembly and on both sides of the processing body 1, a spray rack is rotatably installed on the upper surface of the processing body 1 and on the rear side of the pressing clamping unit, and a reflux cooling chamber connected to the liquid storage tank on the top plate 8 is installed inside the processing body 1, and the sliding clamping unit and the punching positions of the pressing clamping unit are water-cooled and dust-reduced by the rotatable spray rack, and the baffles 6 on both sides are used for water blocking, and the sprayed liquid water enters the reflux cooling chamber along the mesh, and a filter is installed at the water outlet of the reflux cooling chamber. The liquid water after reflux cooling flows back to the liquid storage tank through the filter for recycling.

[0031] like Figure 4 As shown, a linear guide 24 is installed on the lower surface of the top plate 8, and a rotating cylinder 25 is installed on the slider seat outside the linear guide 24. The driving end of the rotating cylinder 25 is connected to a connecting seat 26. A drilling assembly for drilling the marked hole on the water pump casting is installed on the bottom surface of the connecting seat 26. When drilling a hole on the upper surface of the mounting hole at one end of the water pump casting, the drilling assembly reaches the upper center of the mounting hole at one end of the water pump casting. When grinding the flange of the pipeline at the other end of the water pump casting, the slider seat first slides on the linear guide 24 to the position of the flange at the other end of the water pump casting, and then the connecting seat 26 and the drilling assembly are driven by the rotating cylinder 25 to flip and rotate together, as shown in FIG. Figure 4 shown.

[0032] like Figure 4 and Figure 5 As shown, the drilling assembly includes a fixed plate 29 fixed to the connecting seat 26, and a sliding plate 30 is slidably arranged below the fixed plate 29, a gear ring 28 is fixed to the lower surface of the sliding plate 30, and a transmission gear 27 driven by the driving gear in the middle and moving in a circle around the center of the driving gear is meshed and installed below the sliding plate 30, a fitting slider 32 is fixed to the middle of the top of the transmission gear 27, and an annular slide groove 31 for fitting the slider 32 to limit the sliding is provided on the lower surface of the sliding plate 30, a propulsion cylinder 33 is installed in the middle of the lower part of the transmission gear 27, and a drill rod 7 driven by a drilling motor is fixed to the pushing end of the propulsion cylinder 33. Since the midpoint of the mounting port at one end of the water pump casting is aligned with the center of the flange, the water pump casting can be easily moved. The points do not overlap, the drilling operation room, the mounting port and the flange are all pre-reserved with annular marking holes. When the drilling assembly rotates, the sliding plate 30 slides longitudinally on the bottom surface of the fixed plate 29. At this time, the driving gear and the flange are cocentric, so that the end point of the drill rod 7 is located on the annular surface of the flange marking hole, and the transmission gear 27 rotates around the center of the flange to the flange marking hole. The drilling position is more accurate and does not need to be marked again. The fitting slider 32 connected to the transmission gear 27 slides in the annular groove 31, providing support and increasing the stability of the transmission. When drilling, the drilling motor is pushed by the propulsion cylinder 33 to propel the drill rod 7, and the drill rod 7 passes through the mounting hole 23 and drills into the flange surface.

[0033] like Figure 5 As shown, a linear groove 34 is provided on the bottom surface of the fixed plate 29, and a guide slider 10 fixedly connected to the upper surface of the sliding plate 30 is slidably installed inside the linear groove 34. An adjusting cylinder 35 for pushing the sliding plate 30 to move longitudinally is provided on the outer surface of the fixed plate 29. The adjusting cylinder 35 pushes the guide slider 10 on the sliding plate 30 to make a longitudinal guided sliding in the linear groove 34 on the bottom surface of the fixed plate 29, thereby changing the drilling position of the drill rod 7 and adapting to drilling at two different positions.

[0034] It should be noted that the inner diameters of the two holes at different positions, the mounting opening and the flange may be the same or different, and the outer diameter of the flange is larger than the inner diameter of the mounting opening.

[0035] When the present invention is in use, the installation opening at one end of the water pump casting is fitted with the upper surface of the supporting base plate 3, and the flange at the other end and the pipe connected thereto are respectively placed in the placement cavity 18 and the lower support seat 4, and the sliding clamping unit, the rotating clamping unit and the pressing clamping unit work together to fix the two ends of the water pump casting and the outside of the pipe of the water pump casting, thereby increasing the stability of the water pump casting during drilling. After the upper surface of one end of the water pump casting is drilled, the sliding clamping unit on the upper part of the base 2 releases the clamping restriction on one end of the water pump casting and descends to bring The sliding clamping unit moves downward synchronously to avoid interference with the rotation of the water pump casting. The rotating clamping unit remains stationary, and the clamping unit is pressed to release the clamping restriction on the other end of the water pump casting. Then the water pump casting is turned 180 degrees. At this time, the lower surface of one end of the water pump casting is turned upward, and the water pump casting pipeline rotates in the rotating clamping unit. Then, the lower surface of the turned-up water pump casting is punched. Since the position of the water pump casting is still in the clamping assembly, only the flipping action is performed, and there is no need to re-place and correct the position of the water pump casting, thereby improving the punching efficiency;

[0036] By setting a linear guide 24 and a rotating cylinder 25, after the drilling assembly punches the marked hole outside the mounting hole at one end of the water pump casting, it follows the slider seat to slide on the linear guide 24 to the position of the pipe flange at the other end of the water pump casting, and then the rotating cylinder 25 drives the connecting seat 26 and the drilling assembly to flip and rotate together. Since the midpoint of the mounting hole at one end of the water pump casting does not coincide with the midpoint of the flange, when the drilling assembly rotates, the adjusting cylinder 35 pushes the sliding plate 30 to slide longitudinally on the bottom surface of the fixed plate 29. At this time, the driving gear and the flange are cocentric, so that the end point of the drill rod 7 is located on the annular surface of the flange marking hole, the drilling position of the drill rod 7 is changed to adapt to the drilling of two different positions, and the transmission gear 27 rotates around the center of the flange to the flange marking hole. The drilling position is more accurate, no marking is required, and the drilling quality is higher.

[0037] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A water-cooled drilling device for producing water pump castings, comprising a processing body (1), characterized in that: The upper surface of the processing body (1) is provided with a clamping assembly for limiting the position of the water pump casting, and the upper part of the processing body (1) is connected to a top plate (8) via a support column, the clamping assembly comprises a base (2) which is installed on the top surface of the processing body (1) in a lifting manner, the base (2) is arranged non-parallel to the processing body (1), and a sliding clamping unit for fixing one end of the water pump casting is installed on the upper surface of the base (2), a rotating clamping unit for fixing the outside of the water pump casting pipeline is arranged on one side of the base (2), and a pressing clamping unit for fixing the other end of the water pump casting is arranged on one side of the rotating clamping unit; The pressing and clamping unit comprises a bearing seat (9), wherein a placement cavity (18) is provided in the middle of the upper surface of the bearing seat (9) and is fitted with the outer surface of the flange of the water pump casting pipe, a vacant arc cavity (17) is provided on the inner wall surface of one end of the placement cavity (18), and a push plate (19) is installed inside the vacant arc cavity (17) to clamp the end surface of the pipe flange, and two through grooves (20) are provided on the two outer wall surfaces of the bearing seat (9) and are connected to the vacant arc cavity (17), and two protruding plates (22) are installed on the outer surface of the push plate (19) and are limitedly slidable in the corresponding through grooves (20), and a fixing block (21) is provided at the end of the outer wall surface of the bearing seat (9) and located on one side of the push plate (19), and a pressing cylinder for pushing the protruding plate (22) to move is installed on the surface of the fixing block (21); A mounting hole 1 (16) is provided at one end of the upper surface of the bearing seat (9), and a mounting hole 2 (23) is provided at the other end of the upper surface of the bearing seat (9); the mounting hole 2 (23) and the mounting hole 1 (16) are both connected to the placement cavity (18); the inner diameter of the placement cavity (18) is larger than the inner diameter of the mounting hole 2 (23); the inner diameter of the mounting hole 2 (23) is larger than the inner diameter of the mounting hole 1 (16); and the inner wall surface of the mounting hole 1 (16) is in contact with the outer surface of the water pump casting pipe.

2. A water-cooled drilling device for water pump casting production according to claim 1, characterized in that: The sliding clamping unit comprises a supporting base plate (3) which is in close contact with the bottom surface of the water pump casting, the supporting base plate (3) is arranged in parallel with the base (2), and the top end of the supporting base plate (3) is fixedly connected to a vertical plate (11), a clamping cylinder (15) is installed on a bracket plate on the outer surface of the vertical plate (11), and two through grooves (12) are penetrated on the surface of the vertical plate (11), and both driving ends of the clamping cylinder (15) are installed with support rods (13) which slide through the corresponding through grooves (12), and the ends of the support rods (13) are fixedly connected to arc-shaped clamping plates (14) which clamp the water pump casting.

3. A water-cooled drilling device for water pump casting production according to claim 1, characterized in that: The rotating clamping unit comprises a lower support seat (4) fixedly mounted on the top surface of the processing machine body (1) and in contact with the outer surface of the water pump casting pipe, and an upper clamping seat (5) for pressing the water pump casting pipe is rotatably mounted on the end of the lower support seat (4) via a driving shaft.

4. A water-cooled drilling device for water pump casting production according to claim 1, characterized in that: The upper surface of the processing body (1) and the outside of the clamping assembly are provided with mesh holes, the outside of the clamping assembly and the two sides of the processing body (1) are provided with baffles (6), the upper surface of the processing body (1) and the rear side of the pressing clamping unit are provided with a spray rack rotatably mounted, and the inside of the processing body (1) is provided with a reflux cooling chamber connected to a liquid storage tank on the top plate (8).

5. A water-cooled drilling device for water pump casting production according to claim 1, characterized in that: A linear guide rail (24) is installed on the lower surface of the top plate (8), a rotary cylinder (25) is installed on a slider seat outside the linear guide rail (24), a driving end of the rotary cylinder (25) is connected to a connecting seat (26), and a drilling assembly for drilling a marked hole on a water pump casting is installed on the bottom surface of the connecting seat (26).

6. A water-cooled drilling device for water pump casting production according to claim 5, characterized in that: The drilling assembly comprises a fixed plate (29) fixedly connected to a connecting seat (26), a sliding plate (30) slidably arranged below the fixed plate (29), a gear ring (28) fixedly connected to the lower surface of the sliding plate (30), and a transmission gear (27) driven by a driving gear in the middle and performing circular motion around the center of the driving gear is meshingly installed below the sliding plate (30), a fitting slider (32) is fixedly connected to the middle of the top end of the transmission gear (27), and an annular sliding groove (31) is provided on the lower surface of the sliding plate (30) for limiting the sliding of the fitting slider (32), and a propulsion cylinder (33) is installed in the middle of the lower part of the transmission gear (27), and a push end of the propulsion cylinder (33) is fixedly connected to a drill rod (7) driven by a drilling motor.

7. A water-cooled drilling device for water pump casting production according to claim 6, characterized in that: The bottom surface of the fixed plate (29) is provided with a linear slide groove (34), the interior of the linear slide groove (34) is slidably mounted with a guide slider (10) fixedly connected to the upper surface of the sliding plate (30), and the outer surface of the fixed plate (29) is provided with an adjusting cylinder (35) for pushing the sliding plate (30) to move longitudinally.

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