A fixture and method for machining a tapered plunger hole in a plunger pump cylinder

Abstract

The present invention discloses a fixture for machining tapered plunger holes in a plunger pump cylinder and a method thereof, relating to the technical field of machining fixtures. The present invention comprises an operating table, a frame plate being fixed on the left side of the top surface of the operating table, a motor being fixedly installed in the middle of the top surface of the frame plate, a tapered drill bit being fixedly installed on the right side of the motor shaft, an electric telescopic rod being fixedly installed on the right side of the top surface of the operating table, an L-shaped plate being fixed on the left side of the telescopic end of the electric telescopic rod, two vertical columns being fixed on the bottom end of the L-shaped plate, round blocks being fixed on the top surfaces of the two vertical columns respectively, springs 1 being fixed on the bottom surfaces of the two round blocks respectively, and the two springs 1 being respectively sleeved on the tops of the outer walls of the two vertical columns. The present invention blocks the plunger pump cylinder from moving forward and backward by a rubber plate, thereby avoiding the problem of equipment drilling deviation caused by the forward and backward deviation of the plunger pump cylinder.

Description

Technical Field

[0001] The invention relates to the technical field of machining fixtures, in particular to a fixture and a method for machining a tapered plunger hole of a plunger pump cylinder. Background Art

[0002] The main function of the tapered plunger hole processing fixture of the plunger pump cylinder is to fix the plunger pump cylinder and perform drilling processing on the plunger pump cylinder, which effectively reduces the drilling processing time of the plunger pump cylinder, improves production efficiency, and at the same time ensures the accuracy and consistency of part processing.

[0003] The patent number CN206588381U discloses a conical plunger hole processing fixture for a plunger pump cylinder body. The conical plunger hole processing fixture for a plunger pump cylinder body has a core shaft set on a base plate, a tapered roller bearing sleeve on the core shaft, a three-jaw chuck connected to the tapered roller bearing through two left and right connecting plates, the cylinder body is placed in the three-jaw chuck and clamped by the three-jaw chuck, the lower end of the column is set on the base plate, the upper end of the column is connected to one end of the drilling template, and the other end of the drilling template is connected to the quick-change drill sleeve, the quick-change drill sleeve is matched with the cylinder body, and a plurality of circular holes are evenly arranged on the outside of the core shaft on the base plate, a spring hole is provided between one of the connecting plates and the base plate, a spring and a steel ball are provided in the spring hole, and the steel ball is located below the spring, and the steel ball is matched with the circular hole.

[0004] However, the current fixture for processing the tapered plunger hole of the plunger pump cylinder has the following problems: when the fixture is in use, the plunger pump cylinder is prone to offset during the process of moving and drilling, which leads to the problem of equipment drilling offset. Therefore, we propose a fixture for processing the tapered plunger hole of the plunger pump cylinder and a method thereof. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a fixture and method for machining a tapered plunger hole in a plunger pump cylinder, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a conical plunger hole processing fixture for a plunger pump cylinder, comprising an operating table, a frame plate is fixed on the left side of the top surface of the operating table, a motor is fixedly installed in the middle of the top surface of the frame plate, a conical drill bit is fixedly installed on the right side of the motor shaft, an electric telescopic rod is fixedly installed on the right side of the top surface of the operating table, an L-shaped plate is fixed on the left side of the telescopic end of the electric telescopic rod, two vertical columns are fixed on the bottom end of the L-shaped plate, round blocks are respectively fixed on the top surfaces of the two vertical columns, springs are respectively fixed on the bottom surfaces of the two round blocks, and the two springs are fixed on the bottom surfaces of the two One is respectively sleeved on the top of the outer wall of the two vertical columns, and a pressure plate is fixed on the end of the two springs away from the two round blocks, and a rubber block is fixed on the bottom of the pressure plate. A spring piece is fixed to the bottom of the outer wall of the two vertical columns, and two rubber plates are fixed on the side of the four spring pieces away from the two vertical columns. The two rubber plates are located below the rubber blocks. The L-shaped plate and the rubber block clamp the plunger pump cylinder to move to the left, and the rubber plate blocks the plunger pump cylinder from moving forward and backward, so that the plunger pump cylinder will not deviate forward and backward during the clamping movement. An anti-shake component is provided at the bottom end of the L-shaped plate.

[0007] The anti-shake assembly includes two cross blocks, which are fixedly mounted on the inner bottom ends of the L-shaped plate. The two cross blocks are located on the side of the two vertical columns away from each other. Sliders are fixed to the bottom surfaces of the two cross blocks respectively. Two U-shaped guide rails are fixed to the top surface of the operating table. The inner bottom ends of the two U-shaped guide rails are slidably connected to the bottom surfaces of the two slides. The U-shaped guide rails restrict the slides, the slides restrict the cross blocks, and the cross blocks restrict the L-shaped plate, thereby reducing the violent shaking of the L-shaped plate when it moves to the left;

[0008] The top surfaces of the two transverse blocks are provided with limiting devices, and the opposite side of the limiting devices is provided with a bottom supporting device.

[0009] According to the above technical solution, a notch is provided on the left side of the top surface of the operating table, the conical drill bit is provided in the middle of the left side of the L-shaped plate, the inner bottom end of the L-shaped plate is horizontally arranged with the top surface of the frame plate, the two rubber plates are located on the front and back sides of the rubber block, and a slag outlet is provided on the left side of the two U-shaped guide rails.

[0010] The two L-shaped plates have one end each of which is fixed to the left of the two L-shaped plates, and the two L-shaped plates have one end each of which is fixed to the right of the two L-shaped plates.

[0011] According to the above technical solution, the limiting device also includes two arc blocks, two semi-arc spring plates and two inclined plates. The two arc blocks are respectively fixed at the bottom left side of the two L-shaped strips, the two semi-arc spring plates are respectively embedded in the left side of the two arc blocks, and the two inclined plates are fixed on the side of the two semi-arc spring plates away from the two arc blocks. The inclined plate is pressed against the U-shaped guide rail and moves to the left, allowing the inclined plate to scrape off metal debris in the U-shaped guide rail.

[0012] According to the above technical solution, the right sides of the two angle plates are respectively located on the motion tracks of the two slip rings, and the bottom surfaces of the two inclined plates are in sliding contact with the inner bottom ends of the two U-shaped guide rails.

[0013] According to the above technical solution, the bottom support device includes two struts, a sliding base, two spring pieces 2 and a supporting plate. The two struts are respectively fixed on the opposite sides of the two arc blocks, the sliding base is fixed on the bottom surfaces of the two struts, the two spring pieces 2 are fixed on the top surface of the sliding base, and the supporting plate is fixed on the end of the two spring pieces 2 away from the sliding base. The supporting plate is tightly pressed against the bottom of the plunger pump cylinder body, so that when the plunger pump cylinder body is drilling, the supporting plate is supported under the plunger pump cylinder body, thereby reducing the vibration of the plunger pump cylinder body during drilling processing.

[0014] According to the above technical solution, the base support device also includes two blocks, two short columns and chamfered strips. The two blocks are fixed on the top surface of the sliding base plate. The two blocks are respectively located opposite the two support rods. The two short columns pass through and are fixedly installed on the left side of the two blocks. The chamfered strips are fixed on the left side of the two short columns. The chamfers of the chamfered strips shovel the metal debris on the operating table into the groove, so that the metal debris left over from drilling will not accumulate on the operating table.

[0015] According to the above technical solution, the bottom surface of the sliding bottom plate is in sliding contact with the top surface of the operating table, the bottom surface of the chamfered strip is in sliding contact with the top surface of the operating table, and the left side of the chamfered strip is provided with a chamfer.

[0016] A method for machining a tapered plunger hole machining fixture for a plunger pump cylinder body, comprising the following steps:

[0017] S1, start the motor on the frame, the motor shaft starts to rotate forward, and the motor shaft drives the tapered drill bit to rotate forward;

[0018] S2. The staff places the plunger pump cylinder on the L-shaped plate;

[0019] S3, the L-shaped plate and the rubber block clamp the plunger pump cylinder to move leftward, and the rubber plate blocks the plunger pump cylinder from moving forward and backward;

[0020] S4, the horizontal block restricts the L-shaped plate to reduce the violent shaking of the L-shaped plate when it moves to the left;

[0021] S5. Under the elastic force of spring 2, the speed of the L-shaped plate moving to the left is slowed down, and the plunger pump cylinder on the L-shaped plate will not quickly contact the tapered drill bit;

[0022] S6. The inclined plate moves leftward against the U-shaped guide rail to allow the inclined plate to scrape off metal debris in the U-shaped guide rail;

[0023] S7. The support plate is tightly against the bottom of the plunger pump cylinder body. When the plunger pump cylinder body is being drilled, the support plate is supported under the plunger pump cylinder body to reduce the vibration of the plunger pump cylinder body during drilling.

[0024] S8. The chamfering of the chamfering strips shovels the metal debris on the operating table into the grooves, so that the metal debris left over from drilling will not accumulate on the operating table.

[0025] The present invention provides a fixture for machining a tapered plunger hole in a plunger pump cylinder body. It has the following beneficial effects:

[0026] (1) The present invention uses an electric telescopic rod, an L-shaped plate, a vertical column, a round block, a spring, a pressure plate, a rubber block, a spring, a rubber plate, a horizontal block and a slider in conjunction with a U-shaped guide rail. The L-shaped plate and the rubber block clamp the plunger pump cylinder to move leftward, and the rubber plate blocks the plunger pump cylinder from moving forward and backward, so that the plunger pump cylinder will not deviate forward and backward during the clamping movement, thereby avoiding the forward and backward deviation of the plunger pump cylinder causing the drilling deviation of the equipment, and the U-shaped guide rail restricts the slider, the slider restricts the horizontal block, and the horizontal block restricts the L-shaped plate, thereby reducing the L-shaped plate from vigorous shaking during the leftward movement of the L-shaped plate, thereby avoiding the L-shaped plate from vigorous shaking causing the plunger pump cylinder to vibrate.

[0027] (2) The present invention sets a limit device so that the L-shaped strip, spring 2, slip ring, angle plate, L-shaped rod, arc block and semi-arc spring plate cooperate with the inclined plate. Under the elastic force of spring 2, the speed of the L-shaped plate moving to the left is slowed down, and the plunger pump cylinder on the L-shaped plate will not quickly contact the conical drill bit, thereby avoiding the plunger pump cylinder contacting the conical drill bit too quickly and causing uneven drilling of the plunger pump cylinder. In addition, the inclined plate is pressed against the U-shaped guide rail and moves to the left, allowing the inclined plate to scrape off metal debris in the U-shaped guide rail, thereby avoiding metal debris in the U-shaped guide rail causing the equipment to run unsmoothly.

[0028] (3) The present invention arranges the bottom support device so that the support rod, the sliding bottom plate, the second spring piece, the support plate, the block and the short column cooperate with the chamfered strip. The support plate is tightly pressed against the bottom of the plunger pump cylinder body. When the plunger pump cylinder body is drilling, the support plate is supported under the plunger pump cylinder body, thereby reducing the vibration of the plunger pump cylinder body during drilling processing, avoiding excessive amplitude of the plunger pump cylinder body causing poor drilling effect, and the chamfer of the chamfered strip shovels the metal debris on the operating table into the groove, so that the metal debris left over from drilling will not accumulate on the operating table, avoiding the accumulation of metal debris left over from drilling in the equipment causing poor subsequent use of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of the present invention as a whole;

[0030] Figure 2 A schematic cross-sectional view of the present invention as a whole;

[0031] Figure 3 It is a cross-sectional schematic diagram of the electric telescopic rod of the present invention;

[0032] Figure 4 For the present invention Figure 3 A partial enlarged schematic diagram of point A in the middle;

[0033] Figure 5 is a cross-sectional schematic diagram of the limiting device of the present invention;

[0034] Figure 6 For the present invention Figure 5 A partial enlarged schematic diagram of point B in the middle;

[0035] Figure 7 is a cross-sectional schematic diagram of the base support device of the present invention;

[0036] Figure 8 For the present invention Figure 7 A partial enlarged schematic diagram of point C in the middle.

[0037] In the figure: 1. operating table; 2. frame plate; 3. motor; 4. conical drill bit; 5. electric telescopic rod; 6. limit device; 61. L-shaped strip; 62. Spring 2; 63. slip ring; 64. angle plate; 65. L-shaped rod; 66. arc block; 67. semi-arc spring plate; 68. inclined plate; 7. bottom support device; 71. support rod; 72. sliding bottom plate; 73. spring 2; 74. support plate; 75. square block; 76. short column; 77. chamfered strip; 8. L-shaped plate; 9. vertical column; 10. round block; 11. spring 1; 12. pressure plate; 13. rubber block; 14. spring 1; 15. rubber plate; 16. horizontal block; 17. slider; 18. U-shaped guide rail. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0039] See also Figures 1-8 One embodiment of the present invention is a fixture for machining a tapered plunger hole in a plunger pump cylinder, comprising an operating table 1, a notch being provided on the left side of the top surface of the operating table 1, a frame plate 2 being fixed to the left side of the top surface of the operating table 1, a motor 3 being fixedly mounted in the middle of the top surface of the frame plate 2, and a tapered drill bit 4 being fixedly mounted on the right side of the rotating shaft of the motor 3;

[0040] An electric telescopic rod 5 is fixedly installed on the right side of the top surface of the operating table 1, and an L-shaped plate 8 is fixed to the left side of the telescopic end of the electric telescopic rod 5. Two vertical columns 9 are fixed to the bottom end of the L-shaped plate 8. Round blocks 10 are fixed to the top surfaces of the two vertical columns 9 respectively. Springs 11 are fixed to the bottom surfaces of the two round blocks 10 respectively. The two springs 11 are respectively sleeved on the top of the outer walls of the two vertical columns 9. A pressure plate 12 is fixed to the end of the two springs 11 away from the two round blocks 10. A rubber block 13 is fixed to the bottom surface of the pressure plate 12. Springs 14 are fixed to the bottom of the outer walls of the two vertical columns 9 respectively. Four springs 14 are fixed to the side away from the two vertical columns 9. The two rubber plates 15 are located below the rubber block 13. The conical drill bit 4 is set in the middle of the left side of the L-shaped plate 8. The bottom end of the inner part of the L-shaped plate 8 is horizontally arranged with the top surface of the frame plate 2. The two rubber plates 15 are located on the front and back of the rubber block 13. The L-shaped plate 8 and the rubber block 13 clamp the plunger pump cylinder to move to the left for drilling. The rubber plates 15 prevent the plunger pump cylinder from moving back and forth, so that the plunger pump cylinder will not deviate back and forth during the clamping and moving process, thereby avoiding the plunger pump cylinder from deviating back and forth during the process of the processing fixture clamping the plunger pump cylinder for moving drilling, causing the equipment drilling offset;

[0041] An anti-shake assembly is provided at the bottom end of the L-shaped plate 8, and the anti-shake assembly includes two cross blocks 16, which are fixedly mounted at the bottom end of the L-shaped plate 8, and the two cross blocks 16 are located on the side of the two vertical columns 9 away from each other. Sliders 17 are fixed to the bottom surfaces of the two cross blocks 16 respectively, and two U-shaped guide rails 18 are fixed to the top surface of the operating table 1. The bottom ends of the two U-shaped guide rails 18 are slidably connected to the bottom surfaces of the two sliders 17, and a slag outlet is provided on the left side of the two U-shaped guide rails 18. In the process of the slider 17 sliding to the left, the U-shaped guide rail 18 restricts the slider 17, the slider 17 restricts the cross block 16, and the cross block 16 restricts the L-shaped plate 8, thereby reducing the violent shaking of the L-shaped plate 8 during its movement to the left, and avoiding the violent shaking of the L-shaped plate 8 causing the piston pump cylinder to shake when the processing fixture is in use.

[0042] When in use, the operating table 1 supports the frame plate 2, and the motor 3 on the frame plate 2 is started. The rotating shaft of the motor 3 starts to rotate forward, and the rotating shaft of the motor 3 drives the conical drill bit 4 to rotate forward, and the conical drill bit 4 drills the plunger pump cylinder. Since the plunger pump cylinder is prone to deviation during the movement of drilling, the staff will place the plunger pump cylinder on the L-shaped plate 8 at this time and start the electric telescopic rod 5 on the operating table 1. The telescopic end of the electric telescopic rod 5 moves to the left, and the telescopic end of the electric telescopic rod 5 drives the L-shaped plate 8 to move to the left. The L-shaped plate 8 drives the plunger pump cylinder to move to the left. At the same time, the L-shaped plate 8 drives the vertical column 9 to move to the left, and the vertical column 9 drives the round block 10 to move to the left. The round block 10 drives the spring 11 to move to the left, and the spring 11 drives the pressure plate 12 to When the plunger pump is moved to the left, the pressure plate 12 drives the rubber block 13 to move to the left. Under the elastic force of the spring 11, the L-shaped plate 8 and the rubber block 13 clamp the plunger pump cylinder to move to the left. At the same time, the vertical column 9 supports the spring 14. Under the elastic force of the spring 14, the rubber plate 15 on the spring 14 is tightly pressed against the front and back of the plunger pump cylinder, so that the L-shaped plate 8 and the rubber block 13 clamp the plunger pump cylinder to move to the left. The rubber plate 15 prevents the plunger pump cylinder from moving back and forth, so that the plunger pump cylinder will not deviate back and forth during the clamping movement, preventing the plunger pump cylinder from deviating back and forth when the equipment is drilling, thereby avoiding the problem of the equipment drilling deviation caused by the plunger pump cylinder deviating back and forth when the processing fixture clamps the plunger pump cylinder for moving drilling.

[0043] When the telescopic end of the electric telescopic rod 5 drives the L-shaped plate 8 to move to the left, the L-shaped plate 8 drives the cross block 16 to move to the left, and the cross block 16 drives the slider 17 to move to the left. The slider 17 slides to the left in the U-shaped guide rail 18. In the process of the slider 17 sliding to the left, the U-shaped guide rail 18 restricts the slider 17, the slider 17 restricts the cross block 16, and the cross block 16 restricts the L-shaped plate 8, thereby reducing the violent shaking of the L-shaped plate 8 in the process of moving to the left, thereby avoiding the problem of the plunger pump cylinder shaking caused by the violent shaking of the L-shaped plate 8 when the processing fixture is in use.

[0044] See also Figures 1-8 On the basis of the above embodiment, in another embodiment of the present invention, a limiting device 6 is provided on the top surface of the two horizontal blocks 16. The limiting device 6 includes two L-shaped strips 61, two springs 62, two sliding rings 63, two angle plates 64 and two L-shaped rods 65. The two L-shaped strips 61 are respectively fixed on the top surface of the two horizontal blocks 16. Sliding holes are opened on the left sides of the two L-shaped strips 61. The two springs 62 are fixed on the left sides of the two L-shaped strips 61. The two sliding rings 63 are fixed on the ends of the two springs 62 away from the two L-shaped strips 61. The two angle plates 64 are respectively fixed on the left sides of the two U-shaped guide rails 18. The two L-shaped rods 65 are respectively fixed on the two angle plates 64. On the right side, one end of the two L-shaped rods 65 away from the two angle plates 64 is fixed to the top surface of the operating table 1, and the outer walls of the two L-shaped rods 65 are slidably connected to the inner walls of the sliding holes of the two L-shaped strips 61. The two springs 2 62 are sleeved on the outer walls of the two L-shaped rods 65, and the inner walls of the two slip rings 63 are slidably connected to the outer walls of the two L-shaped rods 65. The right sides of the two angle plates 64 are respectively on the movement trajectories of the two slip rings 63. Under the elastic force of the spring 2 62, the speed of the L-shaped plate 8 moving to the left is slowed down, and the plunger pump cylinder on the L-shaped plate 8 will not quickly contact the conical drill bit 4, avoiding the plunger pump cylinder from contacting the conical drill bit 4 too quickly during use of the processing fixture, resulting in uneven drilling of the plunger pump cylinder.

[0045] The limiting device 6 also includes two arc blocks 66, two semi-arc spring plates 67 and two inclined plates 68. The two arc blocks 66 are respectively fixed on the left bottom of the two L-shaped strips 61, and the two semi-arc spring plates 67 are respectively embedded in the left side of the two arc blocks 66. The two inclined plates 68 are fixed on the side of the two semi-arc spring plates 67 away from the two arc blocks 66. The bottom surfaces of the two inclined plates 68 are in sliding contact with the bottom ends of the two U-shaped guide rails 18. The inclined plates 68 are pressed against the U-shaped guide rails 18 and move to the left, allowing the inclined plates 68 to scrape off metal debris in the U-shaped guide rails 18 to avoid metal debris in the U-shaped guide rails 18 causing the equipment to run smoothly during use of the processing fixture.

[0046] A bottom supporting device 7 is provided directly opposite the limiting device 6. The bottom supporting device 7 includes two struts 71, a sliding bottom plate 72, two spring pieces 73 and a supporting plate 74. The two struts 71 are respectively fixed directly opposite the two arc blocks 66, the sliding bottom plate 72 is fixed to the bottom surfaces of the two struts 71, the two spring pieces 73 are fixed to the top surface of the sliding bottom plate 72, and the supporting plate 74 is fixed to the end of the two spring pieces 73 away from the sliding bottom plate 72. The bottom surface of the sliding bottom plate 72 is in sliding contact with the top surface of the operating table 1, and the supporting plate 74 is tightly against the bottom of the plunger pump cylinder body, so that the plunger pump cylinder body is supported by the supporting plate 74 under the plunger pump cylinder body when drilling, thereby reducing the vibration of the plunger pump cylinder body during drilling processing, and avoiding the plunger pump cylinder body from vibrating too much during use of the processing fixture, resulting in poor drilling effect.

[0047] The base support device 7 also includes two blocks 75, two short columns 76 and chamfered strips 77. The two blocks 75 are fixed on the top surface of the sliding base plate 72. The two blocks 75 are respectively located opposite the two support rods 71. The two short columns 76 pass through and are fixedly installed on the left side of the two blocks 75. The chamfered strip 77 is fixed on the left side of the two short columns 76. The bottom surface of the chamfered strip 77 is in sliding contact with the top surface of the operating table 1. A chamfer is provided on the left side of the chamfered strip 77. When the chamfered strip 77 moves to the left, the chamfer of the chamfered strip 77 shovels the metal debris on the operating table 1 into the groove, so that the metal debris left over from drilling will not accumulate on the operating table 1, avoiding the accumulation of metal debris left over from drilling in the equipment during the use of the processing fixture, resulting in poor subsequent use of the equipment.

[0048] A method for machining a tapered plunger hole machining fixture for a plunger pump cylinder body, comprising the following steps:

[0049] S1, start the motor 3 on the frame plate 2, the shaft of the motor 3 starts to rotate forward, and the shaft of the motor 3 drives the tapered drill bit 4 to rotate forward;

[0050] S2. The staff places the plunger pump cylinder on the L-shaped plate 8;

[0051] S3, the L-shaped plate 8 and the rubber block 13 clamp the plunger pump cylinder to move leftward, and the rubber plate 15 blocks the plunger pump cylinder from moving forward and backward;

[0052] S4, the horizontal block 16 restricts the L-shaped plate 8 to reduce the violent shaking of the L-shaped plate 8 during its movement to the left;

[0053] S5. Under the elastic force of the second spring 62, the speed of the L-shaped plate 8 moving to the left is slowed down, and the plunger pump cylinder on the L-shaped plate 8 does not quickly contact the tapered drill bit 4;

[0054] S6, the inclined plate 68 is pressed against the U-shaped guide rail 18 and moves leftward, so that the inclined plate 68 scrapes away metal debris in the U-shaped guide rail 18;

[0055] S7, the support plate 74 is tightly against the bottom of the plunger pump cylinder body, so that when the plunger pump cylinder body is drilling, the support plate 74 is supported under the plunger pump cylinder body to reduce the vibration of the plunger pump cylinder body during drilling processing;

[0056] S8. The chamfering of the chamfering strip 77 shovels the metal debris on the operating table 1 into the groove, so that the metal debris left by drilling will not accumulate on the operating table 1.

[0057] When the L-shaped plate 8 drives the cross block 16 to move to the left, the cross block 16 drives the L-shaped strip 61 to move to the left, the L-shaped strip 61 drives the spring 2 62 to move to the left, and the spring 2 62 drives the slip ring 63 to move to the left. At the same time, the operating table 1 supports the angle plate 64, and the angle plate 64 supports the L-shaped rod 65. The L-shaped strip 61 moves to the left on the L-shaped rod 65, and the slip ring 63 moves to the left on the L-shaped rod 65. In the process of the slip ring 63 moving to the left, the slip ring 63 contacts the angle plate 64. Under the action of the extrusion force, the spring 2 62 begins to contract. Under the elastic force of the spring 2 62, the speed of the L-shaped plate 8 moving to the left is slowed down, and the plunger pump cylinder on the L-shaped plate 8 will not quickly contact the tapered drill bit 4, thereby avoiding the problem of uneven drilling of the plunger pump cylinder due to too fast contact between the plunger pump cylinder and the tapered drill bit 4 during use of the processing fixture.

[0058] When the L-shaped strip 61 moves to the left on the L-shaped rod 65, the L-shaped strip 61 drives the arc block 66 to move to the left, the arc block 66 drives the semi-arc spring plate 67 to move to the left, and the semi-arc spring plate 67 drives the inclined plate 68 to move to the left. Under the elastic force of the semi-arc spring plate 67, the inclined plate 68 is pressed against the U-shaped guide rail 18 and moves to the left, allowing the inclined plate 68 to scrape off metal debris in the U-shaped guide rail 18, preventing metal debris from being present in the U-shaped guide rail 18 when the equipment is in use, thereby avoiding the problem of metal debris in the U-shaped guide rail 18 causing the equipment to run smoothly during use of the processing fixture.

[0059] When the L-shaped strip 61 drives the arc block 66 to move to the left, the arc block 66 drives the support rod 71 to move to the left, the support rod 71 drives the sliding bottom plate 72 to move to the left, the sliding bottom plate 72 drives the spring piece 2 73 to move to the left, and the spring piece 2 73 drives the support plate 74 to move to the left. When the plunger pump cylinder body contacts the conical drill bit 4, under the elastic force of the spring piece 2 73, the support plate 74 is tightly pressed against the bottom of the plunger pump cylinder body, so that the plunger pump cylinder body can be drilled. The support plate 74 is supported under the plunger pump cylinder body, reducing the vibration of the plunger pump cylinder body during drilling processing, preventing the plunger pump cylinder body from vibrating too much when drilling, thereby avoiding the problem of poor drilling effect caused by the plunger pump cylinder body vibrating too much during use of the processing fixture.

[0060] When the support rod 71 drives the sliding base plate 72 to move to the left, the sliding base plate 72 drives the block 75 to move to the left, the block 75 drives the short column 76 to move to the left, and the short column 76 drives the chamfering strip 77 to move to the left, so that when the chamfering strip 77 moves to the left, the chamfer of the chamfering strip 77 will bend the metal debris on the operating table 1 into the scraper groove, so that the metal debris left over from drilling will not accumulate on the operating table 1, preventing the metal debris left over from drilling from accumulating in the equipment when the equipment is in use, thereby avoiding the problem of metal debris left over from drilling accumulating in the equipment during the use of the processing fixture, resulting in poor subsequent use of the equipment.

[0061] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A fixture for machining a tapered plunger hole of a plunger pump cylinder, comprising an operating table (1), a frame plate (2) fixed to the left side of the top surface of the operating table (1), a motor (3) fixedly mounted in the middle of the top surface of the frame plate (2), and a tapered drill bit (4) fixedly mounted on the right side of the rotating shaft of the motor (3), characterized in that: An electric telescopic rod (5) is fixedly installed on the right side of the top surface of the operating table (1), and an L-shaped plate (8) is fixed on the left side of the telescopic end of the electric telescopic rod (5). Two vertical columns (9) are fixed to the bottom end of the L-shaped plate (8), and round blocks (10) are fixed to the top surfaces of the two vertical columns (9), and springs (11) are fixed to the bottom surfaces of the two round blocks (10). The two springs (11) are respectively sleeved on the top of the outer walls of the two vertical columns (9). A pressure plate (12) is fixed to the end of the two springs (11) away from the two round blocks (10), and a rubber block (13) is fixed to the bottom surface of the pressure plate (12). Elastic fragments (14) are fixed to the bottom of the outer walls of the two vertical columns (9), and two rubber plates (15) are fixed to the side of the four elastic fragments (14) away from the two vertical columns (9). The two rubber plates (15) are located below the rubber blocks (13). An anti-shake component is provided at the bottom end of the inner side of the L-shaped plate (8); The anti-shake assembly includes two transverse blocks (16), the two transverse blocks (16) are fixedly mounted on the inner bottom end of the L-shaped plate (8), the two transverse blocks (16) are located on the side of the two vertical columns (9) away from each other, and the bottom surfaces of the two transverse blocks (16) are respectively fixed with sliders (17), and the top surface of the operating table (1) is fixed with two U-shaped guide rails (18), and the inner bottom ends of the two U-shaped guide rails (18) are slidably connected to the bottom surfaces of the two sliders (17); A limiting device (6) is provided on the top surface of the two transverse blocks (16), and a bottom supporting device (7) is provided directly opposite to the limiting device (6); The limiting device (6) includes two L-shaped strips (61), two springs (62), two sliding rings (63), two angle plates (64) and two L-shaped rods (65). The two L-shaped strips (61) are respectively fixed on the top surfaces of the two horizontal blocks (16). The left sides of the two L-shaped strips (61) are provided with sliding holes. The two springs (62) are fixed on the left sides of the two L-shaped strips (61). The two sliding rings (63) are fixed on the ends of the two springs (62) away from the two L-shaped strips (61). The angle plates (64) are respectively fixed on the left sides of the two U-shaped guide rails (18), the two L-shaped rods (65) are respectively fixed on the right sides of the two angle plates (64), the ends of the two L-shaped rods (65) away from the two angle plates (64) are fixed on the top surface of the operating table (1), the outer walls of the two L-shaped rods (65) are slidably connected to the inner walls of the sliding holes of the two L-shaped strips (61), the two springs (62) are sleeved on the outer walls of the two L-shaped rods (65), and the inner walls of the two sliding rings (63) are slidably connected to the outer walls of the two L-shaped rods (65); The bottom supporting device (7) includes two support rods (71), a sliding bottom plate (72), two spring pieces (73) and a supporting plate (74), wherein the two support rods (71) are respectively fixed on opposite sides of the two arc blocks (66), the sliding bottom plate (72) is fixed on the bottom surfaces of the two support rods (71), the two spring pieces (73) are fixed on the top surface of the sliding bottom plate (72), and the supporting plate (74) is fixed on one end of the two spring pieces (73) away from the sliding bottom plate (72).

2. A fixture for machining a tapered plunger hole in a plunger pump cylinder according to claim 1, characterized in that: A notch is provided on the left side of the top surface of the operating table (1), the conical drill bit (4) is provided in the middle of the left side of the L-shaped plate (8), the inner bottom end of the L-shaped plate (8) and the top surface of the frame plate (2) are arranged horizontally, the two rubber plates (15) are located on the front and back sides of the rubber block (13), and a slag outlet is provided on the left side of the two U-shaped guide rails (18).

3. A fixture for machining a tapered plunger hole in a plunger pump cylinder according to claim 2, characterized in that: The limiting device (6) further comprises two arc blocks (66), two semi-arc spring plates (67) and two inclined plates (68), wherein the two arc blocks (66) are respectively fixed to the bottom of the left side of the two L-shaped strips (61), the two semi-arc spring plates (67) are respectively embedded on the left side of the two arc blocks (66), and the two inclined plates (68) are fixed to the side of the two semi-arc spring plates (67) away from the two arc blocks (66).

4. A fixture for machining a tapered plunger hole in a plunger pump cylinder according to claim 3, characterized in that: The right sides of the two angle plates (64) are respectively located on the motion trajectories of the two slip rings (63), and the bottom surfaces of the two inclined plates (68) are in sliding contact with the inner bottom ends of the two U-shaped guide rails (18).

5. A fixture for machining a tapered plunger hole in a plunger pump cylinder according to claim 4, characterized in that: The base support device (7) further comprises two blocks (75), two short columns (76) and a chamfered strip (77), wherein the two blocks (75) are fixed on the top surface of the sliding base plate (72), the two blocks (75) are respectively located opposite to the two support rods (71), the two short columns (76) pass through and are fixedly installed on the left side of the two blocks (75), and the chamfered strip (77) is fixed on the left side of the two short columns (76).

6. A fixture for machining a tapered plunger hole in a plunger pump cylinder according to claim 5, characterized in that: The bottom surface of the sliding bottom plate (72) is in sliding contact with the top surface of the operating table (1), the bottom surface of the chamfered strip (77) is in sliding contact with the top surface of the operating table (1), and the left side of the chamfered strip (77) is provided with a chamfer.

7. A method for machining a tapered plunger hole machining fixture for a plunger pump cylinder, using the tapered plunger hole machining fixture for a plunger pump cylinder according to claim 6, characterized in that: The following steps are involved: S1, start the motor (3) on the frame plate (2), the rotating shaft of the motor (3) starts to rotate forward, and the rotating shaft of the motor (3) drives the conical drill bit (4) to rotate forward; S2. The staff places the plunger pump cylinder on the L-shaped plate (8); S3, the L-shaped plate (8) and the rubber block (13) clamp the plunger pump cylinder to move leftward, and the rubber plate (15) blocks the plunger pump cylinder from moving forward and backward; S4, the horizontal block (16) restricts the L-shaped plate (8) to reduce the L-shaped plate (8) from vigorous shaking during the leftward movement; S5. Under the elastic force of the second spring (62), the speed of the L-shaped plate (8) moving to the left is slowed down, and the plunger pump cylinder on the L-shaped plate (8) does not quickly contact the conical drill bit (4); S6, the inclined plate (68) moves leftward against the U-shaped guide rail (18), allowing the inclined plate (68) to scrape off metal debris in the U-shaped guide rail (18); S7, the support plate (74) is tightly pressed against the bottom of the plunger pump cylinder body, so that when the plunger pump cylinder body is being drilled, the support plate (74) is supported under the plunger pump cylinder body, thereby reducing vibration during the drilling process of the plunger pump cylinder body; S8. The chamfering of the chamfering strip (77) shovels the metal debris on the operating table (1) into the groove, so that the metal debris left by the drilling will not accumulate on the operating table (1).

Images