Pump body machining jig and machining method

Abstract

The invention discloses a pump body machining jig and method, and relates to the field of pump body machining, the pump body machining jig comprises a jig base which is detachably installed on a machine tool workbench, and a pump body is supported on the jig base through bottom feet; the two jig stand columns are symmetrically arranged and detachably installed on the jig base, and each jig stand column is provided with one hand-cranking lead screw; each hand-cranking lead screw is connected with the jig cross beam through a lead screw nut, the jig cross beam is driven by the hand-cranking lead screws to slide up and down relative to the jig stand columns, and sliding fixing seats are arranged on the two sides of the jig cross beam; the pump body flange fixing assembly is mounted on the jig cross beam; the two sets of pump body bottom foot pressing assemblies are symmetrically arranged and detachably installed on the jig base. When the pump body is machined and clamped, the bottom feet and the flange of the pump body are stressed and clamped, stress deformation of an inner hole of the pump body in the machining process is reduced, and meanwhile the machining mode that machining equipment and jigs of multiple types of pump bodies are compatible is met.

Description

Technical Field

[0001] The present invention relates to the field of pump body processing, and in particular to a pump body processing jig and a processing method. Background Art

[0002] The existing pump body adopts the chuck clamping pump body shape clamping processing technology during turning, such as Figures 1-3 As shown, the process includes three steps: initial clamping and lathing, secondary clamping and lathing, and drilling / tapping. Due to the relatively thin wall thickness of the water pump body (2') and the unbalanced clamping force of the chuck (1'), the hole in the water pump body is severely deformed after machining, making the machining process control operation difficult. Furthermore, the workpiece needs to be constantly moved between different machining steps, resulting in high labor intensity and low production efficiency. Furthermore, the use of decentralized process benchmark positioning makes it difficult to ensure quality consistency, and the investment in production equipment is high, resulting in high rework rates and production costs. Summary of the Invention

[0003] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide a pump body processing jig and processing method. The jig is designed to be gantry-type and has a modular adjustable structure. When the pump body is processed and clamped, the pump body base and flange are clamped with force to reduce the stress deformation of the inner hole of the pump body during processing, while meeting the processing method that is compatible with multiple models of pump body processing equipment and jigs.

[0004] The object of the present invention is achieved through the following technical solution: a pump body processing jig, comprising: The fixture base is detachably mounted on the machine tool workbench, and the pump body is supported on the fixture base by the bottom feet; Two fixture columns are symmetrically arranged and can be detachably mounted on the fixture base. A hand screw is installed on each fixture column; Jig beam, each hand-cranked screw is connected to the jig beam through a screw nut. When the handle of the hand-cranked screw is turned, the jig beam is driven to slide up and down relative to the jig column. Sliding fixing seats are provided on both sides of the jig beam to lock the jig beam and the jig column; The pump flange fixing assembly is installed on the fixture beam to lock the pump flange; and Two sets of pump body foot clamping components are arranged symmetrically and can be detachably mounted on the fixture base to clamp the feet on both sides of the pump body.

[0005] As a further technical solution, a pump body foot fixing plate is installed in the middle of the fixture base, the pump body foot is supported on the pump body foot fixing plate, and the foot hole opened on the foot and the positioning pin hole opened on the pump body foot fixing plate are positioned by positioning pins.

[0006] As a further technical solution, guide grooves are symmetrically provided on both sides of the jig base, and a number of fixing holes are also provided on the jig base between the pump body base fixing plate and the guide grooves; the pump body base clamping assembly includes a pump body base pressure plate, and a guide pin is installed at one end of the pump body base pressure plate, and the guide pin slides along the corresponding guide groove to achieve guidance. A waist-shaped hole is provided in the middle of the pump body base pressure plate, which is used to cooperate with the clamping bolt to lock the pump body base pressure plate on the corresponding fixing hole, so that the other end of the pump body base pressure plate presses the base onto the pump body base fixing plate.

[0007] As a further technical solution, an avoidance groove is provided at the bottom of the fixture column to avoid the pump body foot pressure plate.

[0008] As a further technical solution, the hand screw is supported on the top of the fixture column through a hand screw mounting base.

[0009] As a further technical solution, the pump body flange fixing assembly includes a rotating rod, a rotating seat and a pressure block. The two rotating seats are symmetrically arranged on the jig beam. The rotating rod has a "U"-shaped structure, and the two ends are rotatably connected to the corresponding rotating seats. A pressure block is arranged on the inner side of the middle part of the rotating seat for contacting and pressing the pump body flange. The pressure block is adjusted by the pump body flange pressure head threaded on the rotating rod; two supports are symmetrically installed on the jig beam, and each support is threaded with a pump body flange pressure head for contacting and pressing the pump body flange.

[0010] As a further technical solution, two rear end face limit seats are symmetrically installed on the lower end surface of the fixture beam. A pump body pressure head can be removably installed on each rear end face limit seat to limit the rear end face of the pump body; a number of adjustment holes are opened along the vertical direction of the rear end face limit seat to adjust the installation position of the pump body pressure head.

[0011] As a further technical solution, a number of adjustment holes are opened along the vertical direction of the jig column to cooperate with the sliding fixing seat to lock and fix the jig beam and the jig column.

[0012] A pump body processing method, using the above-mentioned pump body processing jig, comprises the following steps: S1. Install the fixture base on the machine tool workbench and tighten it with connecting bolts; S2. According to the model and size of the pump body, turn the handle of the hand screw to adjust the fixture beam to the appropriate height, and use bolts to lock the sliding fixing seat and the corresponding adjustment holes on the fixture column; S3. Select the appropriate pump body foot fixing plate according to the pump body model, position the pump body foot fixing plate and the fixture base with the positioning pins, then pre-connect the pump body foot pressure plate and the fixture base with the tightening bolts, and adjust the relative positions; S4. Turn the rotating rod upward, put the pump body into the jig, and align the foot holes of the pump body with the locating pin holes on the pump body foot fixing plate through the locating pins; S5. Push the pump body foot pressure plate to make the guide pin slide along the guide groove of the fixture base. Move the pump body foot pressure plate forward toward the pump body until it contacts the foot. Then tighten the clamping bolt to make the pump body foot pressure plate press the foot tightly. S6. Flip the rotating rod downward to a position flush with the pump flange. Pre-tighten the two pump flange pressure heads on the fixture beam, then tighten the pump flange pressure heads on the pump flange fixing assembly to make the pressure block press the pump flange tightly. S7. Rough and fine machining of the front end surface of the pump body and its inner circle, holes, threads and chamfers; S8. Control the machine tool worktable to rotate 180° and perform rough and fine processing on the rear end face of the pump body and its outer circle, holes, threads and chamfers.

[0013] As a further technical solution, in S4, the upward flip angle of the rotating rod is 130°, and S4 takes a total of 0.9 minutes; S5 takes a total of 0.8 minutes; S6 takes a total of 1.2 minutes; S7 takes a total of 10.8 minutes; and S8 takes a total of 9.8 minutes.

[0014] The beneficial effects of the present invention are: 1. The pump body foot pressing assembly is used to press the pump body foot, and the pump body flange fixing assembly is used to press the pump body flange. Positioning is no longer performed by clamping the pump body wall. This optimizes the pump body processing and clamping method, balances the clamping force during pump body processing, reduces the deformation of the pump body hole after processing, and improves the reliability of the process. 2. There is no need to set up multiple processing procedures. The pump body can be processed in only one processing procedure, which reduces the processing procedures, reduces labor intensity and improves production efficiency. 3. The jig beam is raised and lowered by a hand-cranked screw, and the pump body foot pressure plate can also be slid and adjusted to meet the compatibility of multiple types of pump body processing equipment and jigs, reduce rework rate and production costs, and improve the consistency of pump body processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the first processing step in the prior art.

[0016] Figure 2 It is a structural diagram of the second processing step in the prior art.

[0017] Figure 3 It is a structural diagram of the third processing step in the prior art.

[0018] Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention after assembly with the pump body. Figure 1 .

[0019] Figure 5 This is a schematic diagram of the three-dimensional structure of the present invention after assembly with the pump body. Figure 2 .

[0020] Figure 6 for Figure 5 A partial enlarged schematic diagram of area A in the middle.

[0021] Figure 7 This is a schematic diagram of the top view of the present invention after being assembled with the pump body.

[0022] Figure 8 It is a schematic diagram of the three-dimensional structure of the present invention.

[0023] Description of reference numerals: chuck 1', water pump body 2'; Machine tool workbench 1, fixture base 2, guide groove 2-1, fixing hole 2-2, fixture beam 3, pump body base fixing plate 4, positioning pin hole 4-1, hand-cranked screw 5, fixture column 6, avoidance groove 6-1, pump body base pressure plate 7, waist-shaped hole 7-1, sliding fixing seat 8, hand-cranked screw mounting seat 9, pump body flange fixing assembly 10, rotating rod 10-1, rotating seat 10-2, pressure block 10-3, pump body flange pressure head 11, pump body 12, front end face 12-1, rear end face 12-2, base 12-3, base hole 12-4, pump body flange 12-5, rear end face limit seat 13, guide pin 14, tightening bolt 15, adjustment hole 16, support 17, pump body pressure head 18. DETAILED DESCRIPTION

[0024] The present invention will be described in detail below with reference to the accompanying drawings: Example 1: As shown in the attached Figures 4 to 8 As shown, a pump body processing jig includes a machine tool workbench 1, a jig base 2, a guide groove 2-1, a fixing hole 2-2, a jig beam 3, a pump body base fixing plate 4, a positioning pin hole 4-1, a hand-cranked screw 5, a jig column 6, an avoidance groove 6-1, a pump body base pressure plate 7, a waist-shaped hole 7-1, a sliding fixing seat 8, a hand-cranked screw mounting seat 9, a pump body flange fixing assembly 10, a rotating rod 10-1, a rotating seat 10-2, a pressure block 10-3, a pump body flange pressure head 11, a pump body 12, a front end face 12-1, a rear end face 12-2, a base 12-3, a base hole 12-4, a pump body flange 12-5, a rear end face limit seat 13, a guide pin 14, a tightening bolt 15, an adjustment hole 16, a support 17 and a pump body pressure head 18.

[0025] Reference Attachment Figure 8The jig base 2 is detachably mounted on the machine tool workbench 1 by bolts, and the pump body 12 is supported on the jig base 2 by the base 12-3. The two jig columns 6 are arranged symmetrically on the left and right and detachably mounted on the jig base 2. At the same time, a hand screw 5 is installed on the top of each jig column 6 through a hand screw mounting seat 9. A hand screw 5 is passed through both sides of the jig beam 3. Each hand screw 5 is connected to the jig beam 3 by a screw nut. When the handle of the hand screw 5 is turned, the jig beam 3 is driven to slide up and down relative to the jig column 6. In addition, sliding fixing seats 8 are provided on both sides of the jig beam 3. Several adjustment holes 16 are opened in the vertical direction of each jig column 6. The adjustment holes 16 (and bolts) can be used in conjunction with the sliding fixing seat 8 to lock the jig beam 3 and the jig column 6.

[0026] like Figure 4 、 5 As shown in Figures 7 and 8, the pump body flange fixing assembly 10 (installed on the jig beam 3) includes a rotating rod 10-1, a rotating seat 10-2 and a pressure block 10-3. The two rotating seats 10-2 are symmetrically arranged on the jig beam 3. The rotating rod 10-1 is approximately "U"-shaped, and the two ends of the rotating rod 10-1 are rotatably connected to the corresponding rotating seats 10-2. A pressure block 10-3 is arranged on the inner side of the middle part of the rotating seat 10-2. The pressure block 10-3 is adjusted by the pump body flange pressure head 11 threadedly connected to the rotating rod 10-1, that is, when the pump body flange pressure head 11 is rotated, the pressure block 10-3 is controlled to contact and press (or loosen and move away from) the pump body flange 12-5.

[0027] Reference Attachment Figure 7 、 8 Two supports 17 are symmetrically installed on the fixture beam 3, and a pump body flange pressure head 11 is threadedly connected to each support 17. The pump body flange pressure head 11 is rotated so that its other end contacts and presses the pump body flange 12-5, and at the same time cooperates with the pressure block 10-3 to form a triangular force on the pump body flange 12-5 (that is, the three force directions are pressed at the same time).

[0028] like Figure 5 、 6As shown in Figures 8 and 9, two sets of pump body foot clamping assemblies are symmetrically arranged and can be detachably mounted on the jig base 2, capable of clamping the feet 12-3 on both sides of the pump body 12. Furthermore, a pump body foot fixing plate 4 is mounted in the middle of the jig base 2, and the feet 12-3 of the pump body 12 are supported on the pump body foot fixing plate 4. Foot holes 12-4 are provided on the feet 12-3, and positioning pin holes 4-1 are provided on the pump body foot fixing plate 4. The foot holes 12-4 and the positioning pin holes 4-1 are positioned by positioning pins. Guide grooves 2-1 are symmetrically provided on both sides of the jig base 2, and a number of fixing holes 2-2 are also provided on the jig base 2 between the pump body foot fixing plate 4 and the guide grooves 2-1. The pump body foot pressing assembly includes a pump body foot pressing plate 7, a guide pin 14 is installed at one end of the pump body foot pressing plate 7, and the guide pin 14 slides along the corresponding guide groove 2-1 to achieve guidance. Preferably, a waist-shaped hole 7-1 is opened in the middle of the pump body foot pressing plate 7. The waist-shaped hole 7-1 can cooperate with the clamping bolt 15 to lock the pump body foot pressing plate 7 on the corresponding fixing hole 2-2, so that the other end of the pump body foot pressing plate 7 presses the foot 12-3 on the pump body foot fixing plate 4. Preferably, an avoidance groove 6-1 is opened at the bottom of the jig column 6 to avoid the pump body foot pressing plate 7.

[0029] like Figure 4 、 8 As shown, two rear end surface limit seats 13 are symmetrically mounted on the lower end surface of the fixture crossbeam 3. A pump body pressure head 18 can be removably mounted on each rear end surface limit seat 13. The pump body pressure head 18 is used to limit the rear end surface 12-2 of the pump body 12. A plurality of adjustment holes 16 are provided along the vertical direction of the rear end surface limit seat 13, through which the installation position of the pump body pressure head 18 can be adjusted.

[0030] Example 2: A pump body processing method, using the pump body processing jig described in Example 1, comprising the following steps: S1. Install the fixture base 2 on the machine tool workbench 1 and tighten it with connecting bolts; S2. According to the model and size of the pump body 12, turn the handle of the hand screw 5 to adjust the fixture beam 3 to the appropriate height, and use bolts to lock the sliding fixing seat 8 and the corresponding adjustment holes 16 on the fixture column 6; S3. Select a suitable pump body foot fixing plate 4 according to the model of the pump body 12, position the pump body foot fixing plate 4 and the fixture base 2 using the positioning pins, then pre-connect the pump body foot pressure plate 7 and the fixture base 2 using the tightening bolts 15, and adjust the relative positions; S4. Turn the rotating rod 10-1 upward by 130°, place the pump body 12 into the jig, and align the foot hole 12-4 of the pump body 12 with the locating pin hole 4-1 on the pump body foot fixing plate 4 using the locating pin. S4 takes a total of 0.9 minutes. S5. Push the pump body foot pressure plate 7 to make the guide pin 14 slide along the guide groove 2-1 of the fixture base 2. Move the pump body foot pressure plate 7 forward toward the pump body 12 until it contacts the foot 12-3. Then tighten the clamping bolt 15 to make the pump body foot pressure plate 7 press the foot 12-3. S5 takes a total of 0.8 minutes. S6. Flip the rotating rod 10-1 downward to a position flush with the pump flange 12-5. Pre-tighten the two pump flange pressure heads 11 on the fixture beam 3. Then tighten the pump flange pressure head 11 on the pump flange fixing assembly 10. Make the pressure block 10-3 press the pump flange 12-5. S6 takes a total of 1.2 minutes. S7, performing rough and fine machining on the front end surface 12-1 of the pump body 12 and the inner circle, hole, thread and chamfer thereon. S7 takes a total of 10.8 minutes; S8, control the machine tool worktable 1 to rotate 180 degrees, and perform rough and fine machining on the rear end face 12-2 of the pump body 12 and the outer circle, hole, thread and chamfer thereon. S8 takes a total of 9.8 minutes.

[0031] Explanation of parts terminology: 1. Machine tool workbench: equipment used to install pump body processing jigs; 2. Jig base: installed on the machine tool workbench, used to install the pump body foot fixing plate, jig column and pump body foot pressure plate; 3. Fixture beam: It is installed on the sliding fixed seat and is driven by the rotation of the hand screw to move it and the sliding fixed seat up and down to change the shape of various pump bodies and clamp the parts for positioning; 4. Pump body foot fixing plate: installed on the fixture base through the positioning pin, used to install the parts for positioning the pump body foot; 5. Hand screw: installed on the hand screw mounting base, cooperates with the sliding fixed base, and drives the sliding fixed base and the fixture beam to move up and down; 6. Jig column: a part installed on the jig base to carry and connect other parts; 7. Pump body foot pressure plate: Installed on the fixture base, slides back and forth along the guide groove of the fixture base, and presses the parts of the pump body foot with bolts; 8. Sliding fixing seat: Installed on the fixture column, the sliding fixing seat drives the fixture beam and pump flange fixing assembly to move up and down along the fixture column by rotating the hand screw, and is fixed to the fixture column by bolts; 9. Hand screw mounting base: installed on the fixture column, used to install parts connecting the hand screw; 10. Pump body flange fixing assembly: Installed on the fixture beam, it avoids interference with pump body installation and removal by turning it upside down, and clamps the pump body flange parts through the pump body flange pressure head; 11. Pump body flange pressure head: installed on the fixture beam and pump body flange fixing assembly, clamping the pump body flange parts through triangular force.

[0032] It is understandable that for those skilled in the art, any equivalent replacement or change to the technical solution and inventive concept of the present invention should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A pump body processing jig, characterized in that: include: A jig base (2) is detachably mounted on a machine tool workbench (1), and a pump body (12) is supported on the jig base (2) via a foot (12-3); Two fixture columns (6) are symmetrically arranged and detachably mounted on the fixture base (2), and a hand screw rod (5) is mounted on each fixture column (6); A jig beam (3), each hand-cranked screw rod (5) is connected to the jig beam (3) through a screw nut. When the handle of the hand-cranked screw rod (5) is rotated, the jig beam (3) is driven to slide up and down relative to the jig column (6). Sliding fixing seats (8) are provided on both sides of the jig beam (3) for locking and fixing the jig beam (3) and the jig column (6); A pump body flange fixing assembly (10), mounted on the fixture beam (3), for locking the pump body flange (12-5); and Two sets of pump body foot pressing assemblies are symmetrically arranged and detachably mounted on the fixture base (2) for pressing the feet (12-3) on both sides of the pump body (12).

2. The pump body processing jig according to claim 1, characterized in that: A pump body foot fixing plate (4) is installed in the middle of the jig base (2), the foot (12-3) of the pump body (12) is supported on the pump body foot fixing plate (4), and the foot hole (12-4) provided on the foot (12-3) and the positioning pin hole (4-1) provided on the pump body foot fixing plate (4) are positioned by a positioning pin.

3. The pump body processing jig according to claim 2, characterized in that: Guide grooves (2-1) are symmetrically provided on both sides of the jig base (2), and a plurality of fixing holes (2-2) are further provided on the jig base (2) between the pump body foot fixing plate (4) and the guide grooves (2-1); the pump body foot pressing assembly comprises a pump body foot pressing plate (7), a guide pin (14) is installed at one end of the pump body foot pressing plate (7), and the guide pin (14) slides along the corresponding guide groove (2-1) to achieve guidance; a waist-shaped hole (7-1) is provided in the middle of the pump body foot pressing plate (7), which is used to cooperate with a clamping bolt (15) to lock the pump body foot pressing plate (7) on the corresponding fixing hole (2-2), so that the other end of the pump body foot pressing plate (7) presses the foot (12-3) on the pump body foot fixing plate (4).

4. The pump body processing jig according to claim 3, characterized in that: The bottom of the fixture column (6) is provided with an avoidance groove (6-1) for avoiding the pump body bottom foot pressure plate (7).

5. The pump body processing jig according to claim 1, characterized in that: The hand screw (5) is supported on the top of the fixture column (6) via a hand screw mounting seat (9).

6. The pump body processing jig according to claim 1, characterized in that: The pump body flange fixing assembly (10) comprises a rotating rod (10-1), a rotating seat (10-2) and a pressure block (10-3), wherein the two rotating seats (10-2) are symmetrically arranged on the fixture beam (3), the rotating rod (10-1) is in a "U"-shaped structure, and both ends are rotatably connected to the corresponding rotating seats (10-2), a pressure block (10-3) is arranged on the inner side of the middle part of the rotating seat (10-2), and is used to contact and press the pump body flange (12-5), and the pressure block (10-3) is adjusted by a pump body flange pressure head (11) threadedly connected to the rotating rod (10-1); two supports (17) are symmetrically installed on the fixture beam (3), and each support (17) is threadedly connected to a pump body flange pressure head (11), and is used to contact and press the pump body flange (12-5).

7. The pump body processing jig according to claim 1, characterized in that: Two rear end face limiting seats (13) are symmetrically mounted on the lower end surface of the fixture crossbeam (3), and a pump body pressure head (18) can be detachably mounted on each rear end face limiting seat (13) for limiting the rear end face (12-2) of the pump body (12); a plurality of adjustment holes (16) are provided in the vertical direction of the rear end face limiting seat (13) for adjusting the installation position of the pump body pressure head (18).

8. The pump body processing jig according to claim 1, characterized in that: A plurality of adjustment holes (16) are provided along the vertical direction of the fixture column (6) for cooperating with the sliding fixing seat (8) to lock and fix the fixture beam (3) and the fixture column (6).

9. A method for processing a pump body, using the pump body processing jig according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Install the fixture base (2) on the machine tool workbench (1) and tighten it with connecting bolts; S2. According to the model and size of the pump body (12), turn the handle of the hand screw (5) to adjust the fixture beam (3) to the appropriate height, and use bolts to lock the sliding fixing seat (8) and the corresponding adjustment hole (16) on the fixture column (6); S3. Select a suitable pump body foot fixing plate (4) according to the model of the pump body (12), position the pump body foot fixing plate (4) and the fixture base (2) through the positioning pins, and then pre-connect the pump body foot pressure plate (7) and the fixture base (2) through the tightening bolts (15), and adjust the relative positions; S4. Turn the rotating rod (10-1) upward, place the pump body (12) into the jig, and align the foot hole (12-4) of the pump body (12) with the locating pin hole (4-1) on the pump body foot fixing plate (4) using the locating pin; S5. Push the pump body foot pressure plate (7) to make the guide pin (14) slide along the guide groove (2-1) of the fixture base (2), and move the pump body foot pressure plate (7) forward in the direction of the pump body (12) until it contacts the foot (12-3), and then tighten the clamping bolt (15) to make the pump body foot pressure plate (7) press the foot (12-3); S6. Turn the rotating rod (10-1) downward to a position flush with the pump flange (12-5), pre-tighten the two pump flange pressure heads (11) on the jig beam (3), and then tighten the pump flange pressure heads (11) on the pump flange fixing assembly (10) so that the pressure block (10-3) presses the pump flange (12-5); S7, performing rough and fine machining on the front end surface (12-1) of the pump body (12) and the inner circle, hole, thread and chamfer thereof; S8, control the machine tool worktable (1) to rotate 180 degrees, and perform rough and fine processing on the rear end face (12-2) of the pump body (12) and the outer circle, hole, thread and chamfer thereon.

10. The pump body processing method according to claim 9, characterized in that: In S4, the rotating rod (10-1) flips upward at an angle of 130°. S4 takes a total of 0.9 minutes; S5 takes a total of 0.8 minutes; S6 takes a total of 1.2 minutes; S7 takes a total of 10.8 minutes; and S8 takes a total of 9.8 minutes.

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